{"id":114330,"date":"2022-02-04T02:06:56","date_gmt":"2022-02-04T01:06:56","guid":{"rendered":"https:\/\/material-properties.org\/acetylene-tableau-des-materiaux-applications-prix\/"},"modified":"2022-03-22T09:28:59","modified_gmt":"2022-03-22T08:28:59","slug":"acetylene-tableau-des-materiaux-applications-prix","status":"publish","type":"post","link":"https:\/\/material-properties.org\/fr\/acetylene-tableau-des-materiaux-applications-prix\/","title":{"rendered":"Ac\u00e9tyl\u00e8ne – Tableau des mat\u00e9riaux – Applications – Prix"},"content":{"rendered":"

\u00c0 propos de l’ac\u00e9tyl\u00e8ne<\/h2>\n

L’ac\u00e9tyl\u00e8ne est un gaz incolore et hautement inflammable avec une odeur \u00e9th\u00e9r\u00e9e.\u00a0L’ac\u00e9tyl\u00e8ne est un hydrocarbure et l’alcyne le plus simple de formule C2H2.\u00a0L’ac\u00e9tyl\u00e8ne commercial aura une odeur d’ail.\u00a0Il est exp\u00e9di\u00e9 avec de l’ac\u00e9tone dissoute sous sa forme gazeuse.\u00a0Utilisations typiques du soudage oxyac\u00e9tyl\u00e9nique et de la synth\u00e8se chimique.\u00a0

<\/div>\n

\"ac\u00e9tyl\u00e8ne<\/a><\/p>\n

<\/div>\n

R\u00e9sum\u00e9<\/h3>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Nom<\/td>\nAc\u00e9tyl\u00e8ne<\/strong><\/td>\n<\/tr>\n
Phase \u00e0 STP<\/td>\ngazeux<\/strong><\/td>\n<\/tr>\n
Densit\u00e9<\/td>\n1,1 kg\/m3<\/strong><\/td>\n<\/tr>\n
R\u00e9sistance \u00e0 la traction ultime<\/td>\nN \/ A<\/strong><\/td>\n<\/tr>\n
Limite d’\u00e9lasticit\u00e9<\/td>\nN \/ A<\/strong><\/td>\n<\/tr>\n
Module de Young<\/td>\nN \/ A<\/strong><\/td>\n<\/tr>\n
Duret\u00e9 Brinell<\/td>\nN \/ A<\/strong><\/td>\n<\/tr>\n
Point de fusion<\/td>\n-82 \u00b0C<\/strong><\/td>\n<\/tr>\n
Conductivit\u00e9 thermique<\/td>\n0,024 W\/mK<\/strong><\/td>\n<\/tr>\n
Capacit\u00e9 thermique<\/td>\n1674 J\/g\u00b7K<\/span><\/strong><\/td>\n<\/tr>\n
Prix<\/td>\n14 $\/kg<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
<\/div>\n

Composition de Ac\u00e9tyl\u00e8ne<\/h2>\n

L’ac\u00e9tyl\u00e8ne est un hydrocarbure et l’alcyne le plus simple de formule C2H2. En tant qu’alcyne, l’ac\u00e9tyl\u00e8ne est insatur\u00e9 car ses deux atomes de carbone sont li\u00e9s ensemble par une triple liaison. La triple liaison carbone-carbone place les quatre atomes sur la m\u00eame ligne droite, avec des angles de liaison CCH de 180\u00b0.

\n

92%\"Carbone<\/a><\/span><\/p>\n<\/div><\/div>

\n

8%\"Hydrog\u00e8ne<\/a><\/span><\/p>\n<\/div><\/div>

\n<\/div><\/div>
<\/div><\/div>\n
<\/div>\n

Applications de l’ac\u00e9tyl\u00e8ne<\/h2>\n

Utilisations typiques de la synth\u00e8se chimique d’oxyac\u00e9tyl\u00e8ne et en particulier pour le soudage et le d\u00e9coupage. Parmi tous les autres gaz, l’ac\u00e9tyl\u00e8ne est capable de produire la flamme la plus chaude. Le proc\u00e9d\u00e9 de soudage qui utilise de l’ac\u00e9tyl\u00e8ne est connu sous le nom d’oxycoupage ou d’oxycoupage. Cette m\u00e9thode est utilis\u00e9e pour couper ou souder des mat\u00e9riaux n\u00e9cessitant des temp\u00e9ratures pouvant atteindre 3 500\u00b0C.<\/p>\n

<\/div>
\n

La r\u00e9sistance des mat\u00e9riaux<\/h3>\n

\"Tableau<\/a><\/p><\/div><\/div>

\n

\u00c9lasticit\u00e9 des mat\u00e9riaux<\/h3>\n

\"Tableau<\/a><\/p><\/div><\/div>

\n

Duret\u00e9 des mat\u00e9riaux<\/h3>\n

\"Tableau<\/a>\u00a0 <\/p><\/div><\/div>

<\/div>\n

Propri\u00e9t\u00e9s thermiques de l’ac\u00e9tyl\u00e8ne<\/h2>\n

Ac\u00e9tyl\u00e8ne – Point de fusion<\/h3>\n

Le point de fusion de l’ac\u00e9tyl\u00e8ne est de -82 \u00b0C<\/strong>\u00a0.<\/p>\n

Notez que ces points sont associ\u00e9s \u00e0 la pression atmosph\u00e9rique standard. En g\u00e9n\u00e9ral, la\u00a0fusion<\/strong> est un\u00a0changement de phase<\/strong> d’une substance de la phase solide \u00e0 la phase liquide. Le\u00a0point de fusion<\/strong> d’une substance est la temp\u00e9rature \u00e0 laquelle ce changement de phase se produit.\u00a0Le\u00a0point de fusion <\/strong>d\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’agit g\u00e9n\u00e9ralement d’un m\u00e9lange de divers \u00e9l\u00e9ments chimiques.<\/p>\n

Ac\u00e9tyl\u00e8ne – Conductivit\u00e9 thermique<\/h3>\n

La conductivit\u00e9 thermique de l’ac\u00e9tyl\u00e8ne est de\u00a00,024\u00a0<\/strong>W\/(m\u00b7K)<\/strong>.<\/p>\n

Les caract\u00e9ristiques de transfert de chaleur d’un mat\u00e9riau solide sont mesur\u00e9es par une propri\u00e9t\u00e9 appel\u00e9e la conductivit\u00e9 thermique<\/strong>, k (ou \u03bb), mesur\u00e9e en W\/mK<\/strong>. C’est une mesure de la capacit\u00e9 d’une substance \u00e0 transf\u00e9rer de la chaleur \u00e0 travers un mat\u00e9riau par\u00a0conduction<\/a>. Notez que\u00a0la loi de Fourier<\/strong><\/a>\u00a0s’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.<\/p>\n

La conductivit\u00e9 thermique<\/strong><\/a> de 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:<\/p>\n

\"conductivit\u00e9<\/a><\/p>\n

La plupart des mat\u00e9riaux sont presque homog\u00e8nes, nous pouvons donc g\u00e9n\u00e9ralement \u00e9crire k = k (T)<\/em><\/strong>.\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.<\/p>\n

Ac\u00e9tyl\u00e8ne – Chaleur sp\u00e9cifique<\/h3>\n

La chaleur sp\u00e9cifique de l’ac\u00e9tyl\u00e8ne est de 1674\u00a0<\/strong> J\/g K<\/strong>.<\/p>\n

La chaleur sp\u00e9cifique, ou capacit\u00e9 thermique sp\u00e9cifique,<\/strong>\u00a0est une propri\u00e9t\u00e9 li\u00e9e \u00e0\u00a0l’\u00e9nergie interne<\/a><\/strong> \u00a0tr\u00e8s importante en thermodynamique.\u00a0Les\u00a0propri\u00e9t\u00e9s intensives <\/strong>c<\/em><\/strong>v<\/sub><\/em><\/strong> et\u00a0c<\/em><\/strong>p<\/sub><\/em><\/strong> sont d\u00e9finies pour des substances compressibles pures et simples comme des d\u00e9riv\u00e9es partielles de l’ \u00e9nergie interne <\/strong>u(T, v)<\/em><\/strong> et de l’ enthalpie <\/strong>h(T, p)<\/em><\/strong>, respectivement:\u00a0<\/strong><\/p>\n

\"\"<\/a><\/p>\n

o\u00f9 les indices v<\/strong> et\u00a0p<\/strong> d\u00e9signent les variables maintenues fixes lors de la diff\u00e9renciation.\u00a0Les propri\u00e9t\u00e9s\u00a0cv<\/sub><\/strong>\u00a0et\u00a0cp<\/sub><\/strong> sont appel\u00e9es\u00a0chaleurs sp\u00e9cifiques <\/strong>(ou\u00a0capacit\u00e9s calorifiques<\/strong>) car, dans certaines conditions particuli\u00e8res, elles relient le changement de temp\u00e9rature d’un syst\u00e8me \u00e0 la quantit\u00e9 d’\u00e9nergie ajout\u00e9e par transfert de chaleur.\u00a0Leurs unit\u00e9s SI sont\u00a0J\/kg K<\/strong>\u00a0ou\u00a0J\/mol K<\/strong>.<\/p>\n

<\/div>
\n

Point de fusion des mat\u00e9riaux<\/h3>\n

\"Tableau<\/a><\/p><\/div><\/div>

\n

Conductivit\u00e9 thermique des mat\u00e9riaux<\/h3>\n

\"Tableau<\/a><\/p><\/div><\/div>

\n

Capacit\u00e9 calorifique des mat\u00e9riaux<\/h3>\n

\"Tableau<\/a><\/p>\n

<\/h3>\n<\/div><\/div>
<\/div>\n

Propri\u00e9t\u00e9s et prix des autres mat\u00e9riaux<\/h2>\n

table-de-mat\u00e9riaux-en-r\u00e9solution-8k<\/p>\n

<\/div>\n","protected":false},"excerpt":{"rendered":"

\u00c0 propos de l’ac\u00e9tyl\u00e8ne L’ac\u00e9tyl\u00e8ne est un gaz incolore et hautement inflammable avec une odeur \u00e9th\u00e9r\u00e9e.\u00a0L’ac\u00e9tyl\u00e8ne est un hydrocarbure et l’alcyne le plus simple de formule C2H2.\u00a0L’ac\u00e9tyl\u00e8ne commercial aura une odeur d’ail.\u00a0Il est exp\u00e9di\u00e9 avec de l’ac\u00e9tone dissoute sous sa forme gazeuse.\u00a0Utilisations typiques du soudage oxyac\u00e9tyl\u00e9nique et de la synth\u00e8se chimique.\u00a0 R\u00e9sum\u00e9 Nom Ac\u00e9tyl\u00e8ne Phase … 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":"\nAc\u00e9tyl\u00e8ne | Propri\u00e9t\u00e9s, Prix & Application | Propri\u00e9t\u00e9s mat\u00e9rielles<\/title>\n<meta name=\"description\" content=\"L'ac\u00e9tyl\u00e8ne est un gaz incolore et hautement inflammable \u00e0 l'odeur 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