{"id":114366,"date":"2022-02-04T15:28:28","date_gmt":"2022-02-04T14:28:28","guid":{"rendered":"https:\/\/material-properties.org\/polystyrene-tableau-des-materiaux-applications-prix\/"},"modified":"2022-02-04T15:28:28","modified_gmt":"2022-02-04T14:28:28","slug":"polystyrene-tableau-des-materiaux-applications-prix","status":"publish","type":"post","link":"https:\/\/material-properties.org\/fr\/polystyrene-tableau-des-materiaux-applications-prix\/","title":{"rendered":"Polystyr\u00e8ne &#8211; Tableau des mat\u00e9riaux &#8211; Applications &#8211; Prix"},"content":{"rendered":"<h2><span>\u00c0 propos du polystyr\u00e8ne<\/span><\/h2>\n<p><span>Le polystyr\u00e8ne, abr\u00e9g\u00e9 en PS, est un polym\u00e8re d&rsquo;hydrocarbure aromatique synth\u00e9tique fabriqu\u00e9 \u00e0 partir du monom\u00e8re connu sous le nom de styr\u00e8ne, qui est d\u00e9riv\u00e9 du benz\u00e8ne et de l&rsquo;\u00e9thyl\u00e8ne, tous deux des produits p\u00e9troliers.\u00a0Le polystyr\u00e8ne peut \u00eatre solide ou en mousse.\u00a0Le polystyr\u00e8ne \u00e0 usage g\u00e9n\u00e9ral est clair, dur et plut\u00f4t cassant.\u00a0Le polystyr\u00e8ne est un thermoplastique incolore et transparent, qui est couramment utilis\u00e9 pour fabriquer des panneaux de mousse ou des panneaux de lambris isolants et un type d&rsquo;isolant en vrac compos\u00e9 de petites billes de polystyr\u00e8ne.\u00a0Les mousses de polystyr\u00e8ne contiennent 95 \u00e0 98 % d&rsquo;air.\u00a0Les mousses de polystyr\u00e8ne sont de bons isolants thermiques et sont donc souvent utilis\u00e9es comme mat\u00e9riaux d&rsquo;isolation des b\u00e2timents, comme dans les coffrages isolants en b\u00e9ton et les syst\u00e8mes de construction \u00e0 panneaux structuraux isol\u00e9s.\u00a0Le polystyr\u00e8ne expans\u00e9 (EPS) et le polystyr\u00e8ne extrud\u00e9 (XPS) sont tous deux fabriqu\u00e9s \u00e0 partir de polystyr\u00e8ne,\u00a0mais EPS est compos\u00e9 de petites billes de plastique qui sont fusionn\u00e9es et XPS commence comme un mat\u00e9riau fondu qui est press\u00e9 hors d&rsquo;une forme en feuilles.\u00a0Le XPS est le plus couramment utilis\u00e9 comme isolant en mousse.\u00a0<div class=\"su-divider su-divider-style-dotted\" style=\"margin:25px 0;border-width:3px;border-color:#999999\"><\/div><\/span><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/03\/polystyrene-properties-density-strength-price.png\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-108509\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/03\/polystyrene-properties-density-strength-price.png\" alt=\"polystyr\u00e8ne propri\u00e9t\u00e9s densit\u00e9 r\u00e9sistance prix\" width=\"500\" height=\"500\" srcset=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/03\/polystyrene-properties-density-strength-price.png 1000w, https:\/\/material-properties.org\/wp-content\/uploads\/2021\/03\/polystyrene-properties-density-strength-price-300x300.png 300w, https:\/\/material-properties.org\/wp-content\/uploads\/2021\/03\/polystyrene-properties-density-strength-price-150x150.png 150w, https:\/\/material-properties.org\/wp-content\/uploads\/2021\/03\/polystyrene-properties-density-strength-price-768x768.png 768w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/a><span><div class=\"su-divider su-divider-style-dotted\" style=\"margin:25px 0;border-width:3px;border-color:#999999\"><\/div><\/span><\/p>\n<h3 style=\"text-align: center;\"><span>R\u00e9sum\u00e9<\/span><\/h3>\n<table class=\"a\">\n<tbody>\n<tr class=\"b\">\n<td style=\"text-align: center;\"><span>Nom<\/span><\/td>\n<td style=\"text-align: center;\"><strong><span>Polystyr\u00e8ne<\/span><\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\"><span>Phase \u00e0 STP<\/span><\/td>\n<td style=\"text-align: center;\"><strong><span>solide<\/span><\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\"><span>Densit\u00e9<\/span><\/td>\n<td style=\"text-align: center;\"><strong><span>1050kg\/m3<\/span><\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\"><span>R\u00e9sistance \u00e0 la traction ultime<\/span><\/td>\n<td style=\"text-align: center;\"><strong><span>48 MPa<\/span><\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\"><span>Limite d&rsquo;\u00e9lasticit\u00e9<\/span><\/td>\n<td style=\"text-align: center;\"><strong><span>N \/ A<\/span><\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\"><span>Module d&rsquo;\u00e9lasticit\u00e9 de Young<\/span><\/td>\n<td style=\"text-align: center;\"><strong><span>3,4 GPa<\/span><\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\"><span>Duret\u00e9 Brinell<\/span><\/td>\n<td style=\"text-align: center;\"><strong><span>50 BHN<\/span><\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\"><span>Point de fusion<\/span><\/td>\n<td style=\"text-align: center;\"><strong><span>217\u00a0\u00b0C<\/span><\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\"><span>Conductivit\u00e9 thermique<\/span><\/td>\n<td style=\"text-align: center;\"><strong><span>0,12 W\/mK<\/span><\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\"><span>Capacit\u00e9 thermique<\/span><\/td>\n<td style=\"text-align: center;\"><strong><span style=\"text-align: start;\"><span>1100 J\/g\u00b7K<\/span><\/span><\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\"><span>Prix<\/span><\/td>\n<td style=\"text-align: center;\"><strong><span>1,1\u00a0$\/kg<\/span><\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span><div class=\"su-divider su-divider-style-dotted\" style=\"margin:25px 0;border-width:3px;border-color:#999999\"><\/div><\/span><\/p>\n<h2><span>Composition du Polystyr\u00e8ne<\/span><\/h2>\n<p><span>En termes chimiques, le polystyr\u00e8ne est un hydrocarbure \u00e0 longue cha\u00eene dans lequel des centres carbon\u00e9s altern\u00e9s sont attach\u00e9s \u00e0 des groupes ph\u00e9nyle (un d\u00e9riv\u00e9 du benz\u00e8ne).\u00a0La formule chimique du polystyr\u00e8ne est (C8H8)n ;\u00a0il contient les \u00e9l\u00e9ments chimiques carbone et hydrog\u00e8ne.\u00a0<div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<p style=\"text-align: center;\"><span style=\"font-size: 50px;\"><span>92%<\/span><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/09\/Carbon-periodic-table.png\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-thumbnail wp-image-92294\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/09\/Carbon-periodic-table-150x150.png\" alt=\"Carbone dans le tableau p\u00e9riodique\" width=\"150\" height=\"150\" \/><\/a><\/span><\/p>\n<p><span><\/span><\/p><\/div><\/div> <div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<p style=\"text-align: center;\"><span style=\"font-size: 50px;\"><span>8%<\/span><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/09\/Hydrogen-periodic-table.png\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-thumbnail wp-image-95010\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/09\/Hydrogen-periodic-table-150x150.png\" alt=\"Hydrog\u00e8ne dans le tableau p\u00e9riodique\" width=\"150\" height=\"150\" srcset=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/09\/Hydrogen-periodic-table-150x150.png 150w, https:\/\/material-properties.org\/wp-content\/uploads\/2020\/09\/Hydrogen-periodic-table-300x300.png 300w, https:\/\/material-properties.org\/wp-content\/uploads\/2020\/09\/Hydrogen-periodic-table.png 500w\" sizes=\"(max-width: 150px) 100vw, 150px\" \/><\/a><\/span><\/p>\n<p><span><\/span><\/p><\/div><\/div> <div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<p><span><\/span><\/p><\/div><\/div> <div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\"> <\/div><\/div><\/span><\/p>\n<p><span><div class=\"su-divider su-divider-style-dotted\" style=\"margin:25px 0;border-width:3px;border-color:#999999\"><\/div><\/span><\/p>\n<h2><span>Applications du polystyr\u00e8ne<\/span><\/h2>\n<figure id=\"attachment_108900\" aria-describedby=\"caption-attachment-108900\" style=\"width: 290px\" class=\"wp-caption alignright\"><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/03\/Polystyrene-Material-Table-Applications-Price.jpg\"><img decoding=\"async\" loading=\"lazy\" class=\"size-medium wp-image-108899\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/03\/Polystyrene-Material-Table-Applications-Price-300x271.jpg\" alt=\"Polystyr\u00e8ne - Tableau des mat\u00e9riaux - Applications - Prix\" width=\"300\" height=\"271\" srcset=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/03\/Polystyrene-Material-Table-Applications-Price-300x271.jpg 300w, https:\/\/material-properties.org\/wp-content\/uploads\/2021\/03\/Polystyrene-Material-Table-Applications-Price-768x693.jpg 768w, https:\/\/material-properties.org\/wp-content\/uploads\/2021\/03\/Polystyrene-Material-Table-Applications-Price.jpg 1024w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><figcaption id=\"caption-attachment-108900\" class=\"wp-caption-text\"><span>{%L\u00c9GENDE%}<\/span><\/figcaption><\/figure>\n<p><span>Le PS est l&rsquo;un des quatre plastiques dont l&rsquo;utilisation combin\u00e9e repr\u00e9sente 75 % de l&rsquo;utilisation mondiale des plastiques.\u00a0Ces quatre thermoplastiques de base sont le PE, le PP, le PVC et le PS.\u00a0Les applications incluent les jouets, les diffuseurs de lumi\u00e8re, les gobelets, les couverts, les appareils \u00e9lectrom\u00e9nagers g\u00e9n\u00e9raux, les bo\u00eetiers de cassettes vid\u00e9o\/audio, les bo\u00eetiers \u00e9lectroniques, les doublures de r\u00e9frig\u00e9rateur, les articles m\u00e9nagers, les conteneurs.\u00a0<div class=\"su-divider su-divider-style-dotted\" style=\"margin:25px 0;border-width:3px;border-color:#999999\"><\/div><\/span><\/p>\n<h2><span>Propri\u00e9t\u00e9s m\u00e9caniques du polystyr\u00e8ne<\/span><\/h2>\n<h3><span>R\u00e9sistance du polystyr\u00e8ne<\/span><\/h3>\n<p><span>En m\u00e9canique des mat\u00e9riaux, la\u00a0<\/span><strong><span>r\u00e9sistance d&rsquo;un mat\u00e9riau<\/span><\/strong><span>\u00a0est sa capacit\u00e9 \u00e0 supporter une charge appliqu\u00e9e sans rupture ni d\u00e9formation plastique.\u00a0<\/span><strong><span>La r\u00e9sistance des mat\u00e9riaux<\/span><\/strong><span>\u00a0consid\u00e8re essentiellement la relation entre les\u00a0<\/span><strong><span>charges externes<\/span><\/strong><span>\u00a0appliqu\u00e9es \u00e0 un mat\u00e9riau et la\u00a0<\/span><strong><span>d\u00e9formation<\/span><\/strong><span>\u00a0ou la modification des dimensions du mat\u00e9riau qui en r\u00e9sulte.\u00a0Lors de la conception de structures et de machines, il est important de tenir compte de ces facteurs, afin que le mat\u00e9riau s\u00e9lectionn\u00e9 ait une r\u00e9sistance suffisante pour r\u00e9sister aux charges ou forces appliqu\u00e9es et conserver sa forme d&rsquo;origine.<\/span><\/p>\n<p><strong><span>La r\u00e9sistance d&rsquo;un mat\u00e9riau<\/span><\/strong><span>\u00a0est sa capacit\u00e9 \u00e0 supporter cette charge appliqu\u00e9e sans d\u00e9faillance ni d\u00e9formation plastique.\u00a0Pour la contrainte de traction, la capacit\u00e9 d&rsquo;un mat\u00e9riau ou d&rsquo;une structure \u00e0 supporter des charges tendant \u00e0 s&rsquo;allonger est appel\u00e9e r\u00e9sistance ultime \u00e0 la traction (UTS).\u00a0<\/span><a href=\"https:\/\/material-properties.org\/what-is-yield-strength-yield-point-definition\/\"><span>La<\/span><\/a><span>\u00a0limite d&rsquo;\u00e9lasticit\u00e9 ou la limite d&rsquo;\u00e9lasticit\u00e9 est la propri\u00e9t\u00e9 du mat\u00e9riau d\u00e9finie comme la contrainte \u00e0 laquelle un mat\u00e9riau commence \u00e0 se d\u00e9former plastiquement, tandis que la limite d&rsquo;\u00e9lasticit\u00e9 est le point o\u00f9 la d\u00e9formation non lin\u00e9aire (\u00e9lastique + plastique) commence.\u00a0En cas de contrainte de traction d&rsquo;une barre uniforme (courbe contrainte-d\u00e9formation), la\u00a0\u00a0<\/span><a href=\"https:\/\/material-properties.org\/what-is-hookes-law-definition\/\"><b><span>loi de Hooke<\/span><\/b><\/a><span>\u00a0d\u00e9crit le comportement d&rsquo;une barre dans la r\u00e9gion \u00e9lastique.\u00a0Le\u00a0<\/span><a href=\"https:\/\/material-properties.org\/what-is-youngs-modulus-of-elasticity-definition\/\"><span>module d&rsquo;\u00e9lasticit\u00e9 de Young<\/span><\/a><span>est le module d&rsquo;\u00e9lasticit\u00e9 pour les contraintes de traction et de compression dans le r\u00e9gime d&rsquo;\u00e9lasticit\u00e9 lin\u00e9aire d&rsquo;une d\u00e9formation uniaxiale et est g\u00e9n\u00e9ralement \u00e9valu\u00e9 par des essais de traction.<\/span><\/p>\n<p><span>Voir aussi :\u00a0<\/span><a href=\"https:\/\/material-properties.org\/what-is-strength-definition\/\"><span>R\u00e9sistance des mat\u00e9riaux<\/span><\/a><\/p>\n<h3><span>R\u00e9sistance \u00e0 la traction ultime du polystyr\u00e8ne<\/span><\/h3>\n<p><span>La r\u00e9sistance \u00e0 la traction ultime du polystyr\u00e8ne est de 48 MPa.<\/span><\/p>\n<h3><span>Limite d&rsquo;\u00e9lasticit\u00e9 du polystyr\u00e8ne<\/span><\/h3>\n<p><span>La limite d&rsquo;\u00e9lasticit\u00e9 du polystyr\u00e8ne\u00a0<\/span><strong>\u00a0<\/strong><span>est N\/A.<\/span><\/p>\n<h3><span>Module d&rsquo;\u00e9lasticit\u00e9 du polystyr\u00e8ne<\/span><\/h3>\n<p><span>Le module d&rsquo;\u00e9lasticit\u00e9 de Young du polystyr\u00e8ne est de 3,4 GPa.<\/span><\/p>\n<h3><span>Duret\u00e9 du polystyr\u00e8ne<\/span><\/h3>\n<p><span>En science des mat\u00e9riaux, la\u00a0\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/materials-science\/material-properties\/hardness\/\"><strong><span>duret\u00e9<\/span><\/strong><\/a><span>\u00a0\u00a0est la capacit\u00e9 \u00e0 r\u00e9sister \u00e0\u00a0\u00a0<\/span><strong><span>l&rsquo;indentation de surface<\/span><\/strong><span>\u00a0\u00a0(\u00a0<\/span><strong><span>d\u00e9formation plastique localis\u00e9e<\/span><\/strong><span>\u00a0) et\u00a0 aux\u00a0<\/span><strong><span>rayures<\/span><\/strong><span>\u00a0.\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/materials-science\/material-properties\/hardness\/brinell-hardness-test\/\"><strong><span>Le test de duret\u00e9 Brinell<\/span><\/strong><\/a><span>\u00a0\u00a0est l&rsquo;un des tests de duret\u00e9 par indentation, qui a \u00e9t\u00e9 d\u00e9velopp\u00e9 pour les tests de duret\u00e9.\u00a0Dans les tests Brinell, un\u00a0\u00a0<\/span><strong><span>p\u00e9n\u00e9trateur sph\u00e9rique<\/span><\/strong><span>\u00a0dur est forc\u00e9 sous une charge sp\u00e9cifique dans la surface du m\u00e9tal \u00e0 tester.<\/span><\/p>\n<p><span>L&rsquo;\u00a0 indice de\u00a0<\/span><strong><span>duret\u00e9 Brinell<\/span><\/strong><span>\u00a0\u00a0(HB) est la charge divis\u00e9e par la surface de l&rsquo;indentation.\u00a0Le diam\u00e8tre de l&#8217;empreinte est mesur\u00e9 avec un microscope \u00e0 \u00e9chelle superpos\u00e9e.\u00a0Le nombre de duret\u00e9 Brinell est calcul\u00e9 \u00e0 partir de l&rsquo;\u00e9quation\u00a0:<\/span><\/p>\n<p><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/01\/brinell-hardness-number-definition.png\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-90675\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/01\/brinell-hardness-number-definition.png\" sizes=\"(max-width: 320px) 100vw, 320px\" srcset=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/01\/brinell-hardness-number-definition.png 320w, https:\/\/material-properties.org\/wp-content\/uploads\/2020\/01\/brinell-hardness-number-definition-300x178.png 300w\" alt=\"indice de duret\u00e9 Brinell - d\u00e9finition\" width=\"320\" height=\"190\" \/><\/a><\/p>\n<p><span>La duret\u00e9 Brinell du polystyr\u00e8ne est d&rsquo;environ 50 BHN (converti).<\/span><\/p>\n<p><span>Voir aussi :\u00a0<\/span><a href=\"https:\/\/material-properties.org\/what-is-hardness-definition\/\"><span>Duret\u00e9 des mat\u00e9riaux<\/span><\/a><\/p>\n<p><span><div class=\"su-divider su-divider-style-dotted\" style=\"margin:25px 0;border-width:3px;border-color:#999999\"><\/div> <div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<h3 style=\"text-align: center;\"><span>La r\u00e9sistance des mat\u00e9riaux<\/span><\/h3>\n<p><a href=\"https:\/\/material-properties.org\/strength-of-materials-tensile-yield\/\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-108070 size-medium\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/02\/Material-Table-Strength-of-Materials-300x182.png\" alt=\"Tableau des mat\u00e9riaux - R\u00e9sistance des mat\u00e9riaux\" width=\"300\" height=\"182\" \/><\/a><span><\/span><\/p><\/div><\/div> <div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<h3 style=\"text-align: center;\"><span>\u00c9lasticit\u00e9 des mat\u00e9riaux<\/span><\/h3>\n<p><a href=\"https:\/\/material-properties.org\/elasticity-of-materials\/\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-108080 size-medium\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/02\/Material-Table-Elasticity-of-Materials-300x185.png\" alt=\"Tableau des mat\u00e9riaux - \u00c9lasticit\u00e9 des mat\u00e9riaux\" width=\"300\" height=\"185\" \/><\/a><span><\/span><\/p><\/div><\/div> <div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<h3 style=\"text-align: center;\"><span>Duret\u00e9 des mat\u00e9riaux<\/span><\/h3>\n<p><a href=\"https:\/\/material-properties.org\/hardness-of-materials-brinell-mohs\/\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-108085 size-medium\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/02\/Material-Table-Hardness-of-Materials-300x182.png\" alt=\"Tableau des mat\u00e9riaux - Duret\u00e9 des mat\u00e9riaux\" width=\"300\" height=\"182\" \/><\/a><span>\u00a0 <\/span><\/p><\/div><\/div> <div class=\"su-divider su-divider-style-dotted\" style=\"margin:25px 0;border-width:3px;border-color:#999999\"><\/div><\/span><\/p>\n<h2><span>Propri\u00e9t\u00e9s thermiques du polystyr\u00e8ne<\/span><\/h2>\n<h3><span>Polystyr\u00e8ne &#8211; Point de fusion<\/span><\/h3>\n<p><strong><span>Le point de fusion du polystyr\u00e8ne est de 217\u00a0<\/span><\/strong><strong><span>\u00b0C<\/span><\/strong><span>\u00a0.<\/span><\/p>\n<p><span>Notez que ces points sont associ\u00e9s \u00e0 la pression atmosph\u00e9rique standard.\u00a0En g\u00e9n\u00e9ral, la\u00a0\u00a0<\/span><strong><span>fusion<\/span><\/strong><span>\u00a0\u00a0est un\u00a0\u00a0<\/span><strong><span>changement de phase<\/span><\/strong><span>\u00a0\u00a0d&rsquo;une substance de la phase solide \u00e0 la phase liquide.\u00a0Le\u00a0\u00a0<\/span><strong><span>point de fusion<\/span><\/strong><span>\u00a0\u00a0d&rsquo;une substance est la temp\u00e9rature \u00e0 laquelle ce changement de phase se produit.\u00a0Le\u00a0\u00a0<\/span><strong><span>point de fusion\u00a0<\/span><\/strong><span>\u00a0d\u00e9finit \u00e9galement une condition dans laquelle le solide et le liquide peuvent exister en \u00e9quilibre.\u00a0Pour divers compos\u00e9s chimiques et alliages, il est difficile de d\u00e9finir le point de fusion, car il s&rsquo;agit g\u00e9n\u00e9ralement d&rsquo;un m\u00e9lange de divers \u00e9l\u00e9ments chimiques.<\/span><\/p>\n<h3><span>Polystyr\u00e8ne &#8211; Conductivit\u00e9 thermique<\/span><\/h3>\n<p><span>La conductivit\u00e9 thermique du polystyr\u00e8ne est de\u00a0<\/span><strong><span>0,12\u00a0<\/span><\/strong><strong><span>W\/(m\u00b7K)<\/span><\/strong><span>\u00a0.<\/span><\/p>\n<p><span>Les caract\u00e9ristiques de transfert de chaleur d&rsquo;un mat\u00e9riau solide sont mesur\u00e9es par une propri\u00e9t\u00e9 appel\u00e9e la\u00a0\u00a0<\/span><strong><span>conductivit\u00e9 thermique<\/span><\/strong><span>\u00a0, k (ou \u03bb), mesur\u00e9e en\u00a0\u00a0<\/span><strong><span>W\/mK<\/span><\/strong><span>\u00a0.\u00a0C&rsquo;est une mesure de la capacit\u00e9 d&rsquo;une substance \u00e0 transf\u00e9rer de la chaleur \u00e0 travers un mat\u00e9riau par\u00a0\u00a0<\/span><a href=\"https:\/\/www.thermal-engineering.org\/what-is-thermal-conduction-heat-conduction-definition\/\"><span>conduction<\/span><\/a><span>\u00a0.\u00a0Notez que\u00a0\u00a0<\/span><a href=\"https:\/\/www.thermal-engineering.org\/what-is-fouriers-law-of-thermal-conduction-definition\/\"><strong><span>la loi de Fourier<\/span><\/strong><\/a><span>\u00a0\u00a0s&rsquo;applique \u00e0 toute mati\u00e8re, quel que soit son \u00e9tat (solide, liquide ou gazeux), par cons\u00e9quent, elle est \u00e9galement d\u00e9finie pour les liquides et les gaz.<\/span><\/p>\n<p><span>La\u00a0\u00a0<\/span><a href=\"https:\/\/www.thermal-engineering.org\/what-is-thermal-conductivity-definition\/\"><strong><span>conductivit\u00e9 thermique<\/span><\/strong><\/a><span>\u00a0\u00a0de la plupart des liquides et des solides varie avec la temp\u00e9rature.\u00a0Pour les vapeurs, cela d\u00e9pend aussi de la pression.\u00a0En g\u00e9n\u00e9ral:<\/span><\/p>\n<p><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2019\/05\/thermal-conductivity-definition.png\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-88791\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2019\/05\/thermal-conductivity-definition.png\" alt=\"conductivit\u00e9 thermique - d\u00e9finition\" width=\"225\" height=\"75\" \/><\/a><\/p>\n<p><span>La plupart des mat\u00e9riaux sont presque homog\u00e8nes, nous pouvons donc g\u00e9n\u00e9ralement \u00e9crire\u00a0\u00a0<\/span><strong><em><span>k = k (T)<\/span><\/em><\/strong><span>\u00a0.\u00a0Des d\u00e9finitions similaires sont associ\u00e9es aux conductivit\u00e9s thermiques dans les directions y et z (ky, kz), mais pour un mat\u00e9riau isotrope, la conductivit\u00e9 thermique est ind\u00e9pendante de la direction de transfert, kx = ky = kz = k.<\/span><\/p>\n<h3><span>Polystyr\u00e8ne &#8211; Chaleur sp\u00e9cifique<\/span><\/h3>\n<p><strong><span>La chaleur sp\u00e9cifique du polystyr\u00e8ne est de\u00a0<\/span><\/strong><strong><span>1100\u00a0<\/span><\/strong><strong><span>J\/g K<\/span><\/strong><span>\u00a0.<\/span><\/p>\n<p><strong><span>La chaleur sp\u00e9cifique, ou capacit\u00e9 thermique sp\u00e9cifique,\u00a0<\/span><\/strong><span>\u00a0est une propri\u00e9t\u00e9 li\u00e9e \u00e0\u00a0<strong><a href=\"https:\/\/www.thermal-engineering.org\/what-is-internal-energy-thermal-energy-definition\/\">l&rsquo;\u00e9nergie interne<\/a><\/strong>\u00a0\u00a0tr\u00e8s importante en thermodynamique.\u00a0Les\u00a0\u00a0<strong>propri\u00e9t\u00e9s intensives\u00a0\u00a0<\/strong><strong><em>c\u00a0<\/em><\/strong><strong><em><sub>v<\/sub><\/em><\/strong>\u00a0\u00a0et\u00a0\u00a0<strong><em>c\u00a0<\/em><\/strong><strong><em><sub>p<\/sub><\/em><\/strong>\u00a0\u00a0sont d\u00e9finies pour des substances compressibles pures et simples comme des d\u00e9riv\u00e9es partielles de l&rsquo;\u00a0\u00a0<strong>\u00e9nergie interne\u00a0\u00a0<\/strong><strong><em>u(T, v)<\/em><\/strong>\u00a0\u00a0et de\u00a0 l&rsquo;\u00a0<strong>enthalpie\u00a0\u00a0<\/strong><strong><em>h(T, p)<\/em><\/strong>\u00a0, respectivement :<\/span><strong>\u00a0<\/strong><\/p>\n<p><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2019\/05\/Specific-Heat-at-Constant-Volume-and-Constant-Pressure.png\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-87687\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2019\/05\/Specific-Heat-at-Constant-Volume-and-Constant-Pressure.png\" alt=\"\" width=\"106\" height=\"138\" \/><\/a><\/p>\n<p><span>o\u00f9 les indices\u00a0\u00a0<\/span><strong><span>v<\/span><\/strong><span>\u00a0\u00a0et\u00a0\u00a0<\/span><strong><span>p<\/span><\/strong><span>\u00a0\u00a0d\u00e9signent les variables maintenues fixes lors de la diff\u00e9renciation.\u00a0Les propri\u00e9t\u00e9s\u00a0\u00a0<\/span><strong><span>c\u00a0<\/span><sub><span>v<\/span><\/sub>\u00a0<\/strong><span>\u00a0et\u00a0\u00a0<\/span><strong><span>c\u00a0<\/span><sub><span>p<\/span><\/sub><\/strong><span>\u00a0\u00a0sont appel\u00e9es\u00a0\u00a0<\/span><strong><span>chaleurs sp\u00e9cifiques\u00a0<\/span><\/strong><span>\u00a0(ou\u00a0\u00a0<\/span><strong><span>capacit\u00e9s calorifiques<\/span><\/strong><span>\u00a0) car, dans certaines conditions particuli\u00e8res, elles relient le changement de temp\u00e9rature d&rsquo;un syst\u00e8me \u00e0 la quantit\u00e9 d&rsquo;\u00e9nergie ajout\u00e9e par transfert de chaleur.\u00a0Leurs unit\u00e9s SI sont\u00a0\u00a0<\/span><strong><span>J\/kg K<\/span><\/strong><span>\u00a0\u00a0ou\u00a0\u00a0<\/span><strong><span>J\/mol K<\/span><\/strong><span>\u00a0.<\/span><\/p>\n<p><span><div class=\"su-divider su-divider-style-dotted\" style=\"margin:25px 0;border-width:3px;border-color:#999999\"><\/div> <div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<h3 style=\"text-align: center;\"><span>Point de fusion des mat\u00e9riaux<\/span><\/h3>\n<p><a href=\"https:\/\/material-properties.org\/melting-point-of-materials\/\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-108050 size-medium\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/02\/Material-Table-Metling-Point-300x183.png\" alt=\"Tableau des mat\u00e9riaux - Point de fusion\" width=\"300\" height=\"183\" \/><\/a><span><\/span><\/p><\/div><\/div> <div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<h3 style=\"text-align: center;\"><span>Conductivit\u00e9 thermique des mat\u00e9riaux<\/span><\/h3>\n<p><a href=\"https:\/\/material-properties.org\/thermal-conductivity-of-materials\/\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-108055 size-medium\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/02\/Material-Table-Thermal-Conductivity-300x180.png\" alt=\"Tableau des mat\u00e9riaux - Conductivit\u00e9 thermique\" width=\"300\" height=\"180\" \/><\/a><span><\/span><\/p><\/div><\/div> <div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<h3 style=\"text-align: center;\"><span>Capacit\u00e9 calorifique des mat\u00e9riaux<\/span><\/h3>\n<p><a href=\"https:\/\/material-properties.org\/heat-capacity-of-materials\/\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-108063 size-medium\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/02\/Material-Table-Heat-Capacity-300x179.png\" alt=\"Tableau des mat\u00e9riaux - Capacit\u00e9 calorifique\" width=\"300\" height=\"179\" \/><\/a><\/p>\n<h3 style=\"text-align: center;\"><\/h3>\n<p><span><\/span><\/p><\/div><\/div> <div class=\"su-divider su-divider-style-dotted\" style=\"margin:25px 0;border-width:3px;border-color:#999999\"><\/div><\/span><\/p>\n<h2><span>Propri\u00e9t\u00e9s et prix des autres mat\u00e9riaux<\/span><\/h2>\n<p><span>table-de-mat\u00e9riaux-en-r\u00e9solution-8k<\/span><\/p>\n<p><span><div class=\"su-divider su-divider-style-dotted\" style=\"margin:20px 0;border-width:2px;border-color:#999999\"><\/div><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00c0 propos du polystyr\u00e8ne Le polystyr\u00e8ne, abr\u00e9g\u00e9 en PS, est un polym\u00e8re d&rsquo;hydrocarbure aromatique synth\u00e9tique fabriqu\u00e9 \u00e0 partir du monom\u00e8re connu sous le nom de styr\u00e8ne, qui est d\u00e9riv\u00e9 du benz\u00e8ne et de l&rsquo;\u00e9thyl\u00e8ne, tous deux des produits p\u00e9troliers.\u00a0Le polystyr\u00e8ne peut \u00eatre solide ou en mousse.\u00a0Le polystyr\u00e8ne \u00e0 usage g\u00e9n\u00e9ral est clair, dur et plut\u00f4t &#8230; <a title=\"Polystyr\u00e8ne &#8211; Tableau des mat\u00e9riaux &#8211; Applications &#8211; Prix\" class=\"read-more\" href=\"https:\/\/material-properties.org\/fr\/polystyrene-tableau-des-materiaux-applications-prix\/\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Polystyr\u00e8ne | Propri\u00e9t\u00e9s, Prix &amp; Application | Propri\u00e9t\u00e9s mat\u00e9rielles<\/title>\n<meta name=\"description\" content=\"Le polystyr\u00e8ne, abr\u00e9g\u00e9 en PS, est un polym\u00e8re d&#039;hydrocarbure aromatique synth\u00e9tique fabriqu\u00e9 \u00e0 partir du monom\u00e8re connu sous le nom de styr\u00e8ne. Le PS peut \u00eatre solide ou en mousse. Le polystyr\u00e8ne \u00e0 usage g\u00e9n\u00e9ral est clair, dur et plut\u00f4t cassant. C&#039;est un thermoplastique incolore et transparent.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/material-properties.org\/fr\/polystyrene-tableau-des-materiaux-applications-prix\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Polystyr\u00e8ne | Propri\u00e9t\u00e9s, Prix &amp; Application | Propri\u00e9t\u00e9s mat\u00e9rielles\" \/>\n<meta property=\"og:description\" content=\"Le polystyr\u00e8ne, abr\u00e9g\u00e9 en PS, est un polym\u00e8re d&#039;hydrocarbure aromatique synth\u00e9tique fabriqu\u00e9 \u00e0 partir du monom\u00e8re connu sous le nom de styr\u00e8ne. Le PS peut \u00eatre solide ou en mousse. Le polystyr\u00e8ne \u00e0 usage g\u00e9n\u00e9ral est clair, dur et plut\u00f4t cassant. C&#039;est un thermoplastique incolore et transparent.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/material-properties.org\/fr\/polystyrene-tableau-des-materiaux-applications-prix\/\" \/>\n<meta property=\"og:site_name\" content=\"Material Properties\" \/>\n<meta property=\"article:published_time\" content=\"2022-02-04T14:28:28+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/03\/polystyrene-properties-density-strength-price.png\" \/>\n<meta name=\"author\" content=\"Nick Connor\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Nick Connor\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"8 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/material-properties.org\/fr\/polystyrene-tableau-des-materiaux-applications-prix\/\",\"url\":\"https:\/\/material-properties.org\/fr\/polystyrene-tableau-des-materiaux-applications-prix\/\",\"name\":\"Polystyr\u00e8ne | Propri\u00e9t\u00e9s, Prix & Application | Propri\u00e9t\u00e9s mat\u00e9rielles\",\"isPartOf\":{\"@id\":\"https:\/\/material-properties.org\/fr\/#website\"},\"datePublished\":\"2022-02-04T14:28:28+00:00\",\"dateModified\":\"2022-02-04T14:28:28+00:00\",\"author\":{\"@id\":\"https:\/\/material-properties.org\/fr\/#\/schema\/person\/e8c544db9afedaec8574d6464f9398bb\"},\"description\":\"Le polystyr\u00e8ne, abr\u00e9g\u00e9 en PS, est un polym\u00e8re d'hydrocarbure aromatique synth\u00e9tique fabriqu\u00e9 \u00e0 partir du monom\u00e8re connu sous le nom de styr\u00e8ne. 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Le PS peut \u00eatre solide ou en mousse. Le polystyr\u00e8ne \u00e0 usage g\u00e9n\u00e9ral est clair, dur et plut\u00f4t cassant. C'est un thermoplastique incolore et transparent.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/material-properties.org\/fr\/polystyrene-tableau-des-materiaux-applications-prix\/","og_locale":"fr_FR","og_type":"article","og_title":"Polystyr\u00e8ne | Propri\u00e9t\u00e9s, Prix & Application | Propri\u00e9t\u00e9s mat\u00e9rielles","og_description":"Le polystyr\u00e8ne, abr\u00e9g\u00e9 en PS, est un polym\u00e8re d'hydrocarbure aromatique synth\u00e9tique fabriqu\u00e9 \u00e0 partir du monom\u00e8re connu sous le nom de styr\u00e8ne. Le PS peut \u00eatre solide ou en mousse. Le polystyr\u00e8ne \u00e0 usage g\u00e9n\u00e9ral est clair, dur et plut\u00f4t cassant. C'est un thermoplastique incolore et transparent.","og_url":"https:\/\/material-properties.org\/fr\/polystyrene-tableau-des-materiaux-applications-prix\/","og_site_name":"Material Properties","article_published_time":"2022-02-04T14:28:28+00:00","og_image":[{"url":"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/03\/polystyrene-properties-density-strength-price.png"}],"author":"Nick Connor","twitter_card":"summary_large_image","twitter_misc":{"\u00c9crit par":"Nick Connor","Dur\u00e9e de lecture estim\u00e9e":"8 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/material-properties.org\/fr\/polystyrene-tableau-des-materiaux-applications-prix\/","url":"https:\/\/material-properties.org\/fr\/polystyrene-tableau-des-materiaux-applications-prix\/","name":"Polystyr\u00e8ne | Propri\u00e9t\u00e9s, Prix & Application | Propri\u00e9t\u00e9s mat\u00e9rielles","isPartOf":{"@id":"https:\/\/material-properties.org\/fr\/#website"},"datePublished":"2022-02-04T14:28:28+00:00","dateModified":"2022-02-04T14:28:28+00:00","author":{"@id":"https:\/\/material-properties.org\/fr\/#\/schema\/person\/e8c544db9afedaec8574d6464f9398bb"},"description":"Le polystyr\u00e8ne, abr\u00e9g\u00e9 en PS, est un polym\u00e8re d'hydrocarbure aromatique synth\u00e9tique fabriqu\u00e9 \u00e0 partir du monom\u00e8re connu sous le nom de styr\u00e8ne. Le PS peut \u00eatre solide ou en mousse. Le polystyr\u00e8ne \u00e0 usage g\u00e9n\u00e9ral est clair, dur et plut\u00f4t cassant. C'est un thermoplastique incolore et transparent.","breadcrumb":{"@id":"https:\/\/material-properties.org\/fr\/polystyrene-tableau-des-materiaux-applications-prix\/#breadcrumb"},"inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/material-properties.org\/fr\/polystyrene-tableau-des-materiaux-applications-prix\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/material-properties.org\/fr\/polystyrene-tableau-des-materiaux-applications-prix\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Dom\u016f","item":"https:\/\/material-properties.org\/fr\/"},{"@type":"ListItem","position":2,"name":"Polystyr\u00e8ne &#8211; Tableau des mat\u00e9riaux &#8211; Applications &#8211; Prix"}]},{"@type":"WebSite","@id":"https:\/\/material-properties.org\/fr\/#website","url":"https:\/\/material-properties.org\/fr\/","name":"Material Properties","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/material-properties.org\/fr\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"fr-FR"},{"@type":"Person","@id":"https:\/\/material-properties.org\/fr\/#\/schema\/person\/e8c544db9afedaec8574d6464f9398bb","name":"Nick Connor","image":{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/material-properties.org\/fr\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/84c0dec310b44b65da29dc9df6925239?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/84c0dec310b44b65da29dc9df6925239?s=96&d=mm&r=g","caption":"Nick Connor"},"url":"https:\/\/material-properties.org\/fr\/author\/matan\/"}]}},"_links":{"self":[{"href":"https:\/\/material-properties.org\/fr\/wp-json\/wp\/v2\/posts\/114366"}],"collection":[{"href":"https:\/\/material-properties.org\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/material-properties.org\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/material-properties.org\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/material-properties.org\/fr\/wp-json\/wp\/v2\/comments?post=114366"}],"version-history":[{"count":0,"href":"https:\/\/material-properties.org\/fr\/wp-json\/wp\/v2\/posts\/114366\/revisions"}],"wp:attachment":[{"href":"https:\/\/material-properties.org\/fr\/wp-json\/wp\/v2\/media?parent=114366"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/material-properties.org\/fr\/wp-json\/wp\/v2\/categories?post=114366"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/material-properties.org\/fr\/wp-json\/wp\/v2\/tags?post=114366"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}