{"id":2399,"date":"2022-10-29T16:00:39","date_gmt":"2022-10-29T08:00:39","guid":{"rendered":"https:\/\/megatrimming.com\/?p=2399"},"modified":"2022-10-29T16:00:42","modified_gmt":"2022-10-29T08:00:42","slug":"the-composition-and-source-of-rubber","status":"publish","type":"post","link":"https:\/\/megatrimming.com\/fr\/the-composition-and-source-of-rubber\/","title":{"rendered":"La composition et la source du caoutchouc"},"content":{"rendered":"<div class=\"wp-block-media-text alignwide is-stacked-on-mobile has-pale-cyan-blue-background-color has-background\"><figure class=\"wp-block-media-text__media\"><img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/megatrimming.com\/wp-content\/uploads\/2022\/10\/Main-06-2-2.jpg\" alt=\"rubber patch\" class=\"wp-image-2384 size-full\" srcset=\"https:\/\/megatrimming.com\/wp-content\/uploads\/2022\/10\/Main-06-2-2.jpg 800w, https:\/\/megatrimming.com\/wp-content\/uploads\/2022\/10\/Main-06-2-2-300x300.jpg 300w, https:\/\/megatrimming.com\/wp-content\/uploads\/2022\/10\/Main-06-2-2-150x150.jpg 150w, https:\/\/megatrimming.com\/wp-content\/uploads\/2022\/10\/Main-06-2-2-768x768.jpg 768w, https:\/\/megatrimming.com\/wp-content\/uploads\/2022\/10\/Main-06-2-2-600x600.jpg 600w, https:\/\/megatrimming.com\/wp-content\/uploads\/2022\/10\/Main-06-2-2-100x100.jpg 100w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"has-large-font-size\"><strong>Source<\/strong><\/p>\n\n\n\n<p>Le mot caoutchouc vient du mot indien Cau-uchu, qui signifie \u00ab arbre pleureur \u00bb. Le caoutchouc naturel provient du latex de caoutchouc qui s&#039;\u00e9coule de l&#039;arbre \u00e0 caoutchouc \u00e0 trois feuilles apr\u00e8s solidification et s\u00e9chage. Lorsque J. Priestley, un chimiste anglais, a d\u00e9couvert en 1770 que le caoutchouc pouvait \u00eatre utilis\u00e9 pour effacer l&#039;\u00e9criture au crayon, le terme caoutchouc est toujours utilis\u00e9 aujourd&#039;hui. La cha\u00eene mol\u00e9culaire du caoutchouc peut \u00eatre r\u00e9ticul\u00e9e. Lorsque le caoutchouc est d\u00e9form\u00e9 par une force externe, il a la capacit\u00e9 de r\u00e9cup\u00e9rer rapidement et poss\u00e8de de bonnes propri\u00e9t\u00e9s physiques et m\u00e9caniques et une bonne stabilit\u00e9 chimique. Le caoutchouc est la mati\u00e8re premi\u00e8re de base de l&#039;industrie du caoutchouc, largement utilis\u00e9e dans la fabrication de pneus, de tuyaux en caoutchouc, de rubans, de c\u00e2bles et d&#039;autres produits en caoutchouc. L&#039;arbre \u00e0 caoutchouc \u00e0 trois feuilles fournit le caoutchouc le plus commercial. Il s\u00e9cr\u00e8te une grande quantit\u00e9 de s\u00e8ve contenant une \u00e9mulsion de caoutchouc lorsqu&#039;il est bless\u00e9, comme lorsque l&#039;\u00e9corce de la tige est coup\u00e9e.<\/p>\n\n\n\n<p>De plus, les figuiers et certaines plantes Euphorbidiaceae fournissent \u00e9galement du caoutchouc. L&#039;Allemagne a essay\u00e9 d&#039;obtenir du caoutchouc \u00e0 partir de ces plantes lorsque son approvisionnement en caoutchouc a \u00e9t\u00e9 coup\u00e9 pendant la Seconde Guerre mondiale, mais s&#039;est ensuite tourn\u00e9e vers le caoutchouc artificiel.<\/p>\n\n\n\n<p>Les premiers arbres \u00e0 caoutchouc ont \u00e9t\u00e9 cultiv\u00e9s en Am\u00e9rique du Sud, mais ils ont \u00e9t\u00e9 transplant\u00e9s en grand nombre en Asie du Sud-Est. En fait, l&#039;Asie est devenue la plus importante source de caoutchouc.<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-media-text alignwide has-media-on-the-right is-stacked-on-mobile has-luminous-vivid-amber-to-luminous-vivid-orange-gradient-background has-background\"><figure class=\"wp-block-media-text__media\"><img decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/megatrimming.com\/wp-content\/uploads\/2022\/10\/Main-04-4-4.jpg\" alt=\"rubber patch\" class=\"wp-image-2393 size-full\" srcset=\"https:\/\/megatrimming.com\/wp-content\/uploads\/2022\/10\/Main-04-4-4.jpg 800w, https:\/\/megatrimming.com\/wp-content\/uploads\/2022\/10\/Main-04-4-4-300x300.jpg 300w, https:\/\/megatrimming.com\/wp-content\/uploads\/2022\/10\/Main-04-4-4-150x150.jpg 150w, https:\/\/megatrimming.com\/wp-content\/uploads\/2022\/10\/Main-04-4-4-768x768.jpg 768w, https:\/\/megatrimming.com\/wp-content\/uploads\/2022\/10\/Main-04-4-4-600x600.jpg 600w, https:\/\/megatrimming.com\/wp-content\/uploads\/2022\/10\/Main-04-4-4-100x100.jpg 100w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"has-large-font-size\"><strong>Ingr\u00e9dients<\/strong><\/p>\n\n\n\n<p>Le caoutchouc naturel est fabriqu\u00e9 \u00e0 partir de latex et certains des composants non caoutchout\u00e9s contenus dans le latex restent dans le caoutchouc naturel solide. Le caoutchouc naturel g\u00e9n\u00e9ral contient de l&#039;hydrocarbure de caoutchouc 92%-95% et de l&#039;hydrocarbure non caoutchout\u00e9 5%-8%. En raison des diff\u00e9rentes m\u00e9thodes de production, des diff\u00e9rentes zones de production et m\u00eame des diff\u00e9rentes saisons de collecte de gomme, les proportions de ces ingr\u00e9dients peuvent varier, mais elles sont fondamentalement dans la fourchette.<\/p>\n\n\n\n<p>Les prot\u00e9ines peuvent favoriser la vulcanisation du caoutchouc, retardant ainsi le vieillissement. D&#039;autre part, les prot\u00e9ines ont une forte absorption d&#039;eau, peuvent provoquer la moisissure due \u00e0 l&#039;absorption d&#039;humidit\u00e9 du caoutchouc, la diminution de l&#039;isolation, les prot\u00e9ines et augmenter les d\u00e9fauts de la thermogen\u00e8se.<\/p>\n\n\n\n<p>L&#039;extrait d&#039;ac\u00e9tone contient des acides gras avanc\u00e9s et des substances st\u00e9roliques, dont certains jouent le r\u00f4le d&#039;agents anti-\u00e2ge naturels et de promoteurs, et peuvent aider les complexes de poudre dans le processus de m\u00e9lange et jouer un r\u00f4le dans l&#039;adoucissement du caoutchouc.<\/p>\n\n\n\n<p>La cendre contient principalement du phosphate de magn\u00e9sium, du phosphate de calcium et d&#039;autres sels, avec une petite quantit\u00e9 de cuivre, de mangan\u00e8se, de fer et d&#039;autres compos\u00e9s m\u00e9talliques, car ces ions m\u00e9talliques variables peuvent favoriser le vieillissement du caoutchouc, leur contenu doit donc \u00eatre contr\u00f4l\u00e9.<\/p>\n\n\n\n<p>L&#039;humidit\u00e9 du caoutchouc sec ne d\u00e9passe pas 1%, ce qui peut \u00eatre volatil au cours du processus de traitement. Mais lorsque la teneur en humidit\u00e9 est trop \u00e9lev\u00e9e, cela rendra non seulement le caoutchouc brut facile \u00e0 mouler au cours du processus de stockage, mais affectera \u00e9galement le traitement du caoutchouc, par exemple, l&#039;agent complexe est facile \u00e0 regrouper lors du m\u00e9lange ; il est facile de produire des bulles au cours du processus de calandrage et de pressage, et des bulles ou de l&#039;\u00e9ponge au cours du processus de vulcanisation.<\/p>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Source The Word Rubber Comes From The Indian Word Cau-uchu, Meaning &#8220;weeping Tree.&#8221; Natural Rubber Is From The Rubber Latex Flowing Out Of The Three-leaf Rubber Tree After Solidification And Drying. When J. Priestley, An English Chemist, Discovered In 1770 That Rubber Could Be Used To Erase Pencil Writing, The Term Rubber Is Still Used [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2384,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_uag_custom_page_level_css":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-2399","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"uagb_featured_image_src":{"full":["https:\/\/megatrimming.com\/wp-content\/uploads\/2022\/10\/Main-06-2-2.jpg",800,800,false],"thumbnail":["https:\/\/megatrimming.com\/wp-content\/uploads\/2022\/10\/Main-06-2-2-150x150.jpg",150,150,true],"medium":["https:\/\/megatrimming.com\/wp-content\/uploads\/2022\/10\/Main-06-2-2-300x300.jpg",300,300,true],"medium_large":["https:\/\/megatrimming.com\/wp-content\/uploads\/2022\/10\/Main-06-2-2-768x768.jpg",768,768,true],"large":["https:\/\/megatrimming.com\/wp-content\/uploads\/2022\/10\/Main-06-2-2.jpg",800,800,false],"1536x1536":["https:\/\/megatrimming.com\/wp-content\/uploads\/2022\/10\/Main-06-2-2.jpg",800,800,false],"2048x2048":["https:\/\/megatrimming.com\/wp-content\/uploads\/2022\/10\/Main-06-2-2.jpg",800,800,false],"trp-custom-language-flag":["https:\/\/megatrimming.com\/wp-content\/uploads\/2022\/10\/Main-06-2-2.jpg",12,12,false],"woocommerce_thumbnail":["https:\/\/megatrimming.com\/wp-content\/uploads\/2022\/10\/Main-06-2-2-300x300.jpg",300,300,true],"woocommerce_single":["https:\/\/megatrimming.com\/wp-content\/uploads\/2022\/10\/Main-06-2-2-600x600.jpg",600,600,true],"woocommerce_gallery_thumbnail":["https:\/\/megatrimming.com\/wp-content\/uploads\/2022\/10\/Main-06-2-2-100x100.jpg",100,100,true]},"uagb_author_info":{"display_name":"Jason Lu","author_link":"https:\/\/megatrimming.com\/fr\/author\/mark\/"},"uagb_comment_info":0,"uagb_excerpt":"Source The Word Rubber Comes From The Indian Word Cau-uchu, Meaning &#8220;weeping Tree.&#8221; Natural Rubber Is From The Rubber Latex Flowing Out Of The Three-leaf Rubber Tree After Solidification And Drying. When J. Priestley, An English Chemist, Discovered In 1770 That Rubber Could Be Used To Erase Pencil Writing, The Term Rubber Is Still Used\u2026","_links":{"self":[{"href":"https:\/\/megatrimming.com\/fr\/wp-json\/wp\/v2\/posts\/2399","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/megatrimming.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/megatrimming.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/megatrimming.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/megatrimming.com\/fr\/wp-json\/wp\/v2\/comments?post=2399"}],"version-history":[{"count":1,"href":"https:\/\/megatrimming.com\/fr\/wp-json\/wp\/v2\/posts\/2399\/revisions"}],"predecessor-version":[{"id":2401,"href":"https:\/\/megatrimming.com\/fr\/wp-json\/wp\/v2\/posts\/2399\/revisions\/2401"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/megatrimming.com\/fr\/wp-json\/wp\/v2\/media\/2384"}],"wp:attachment":[{"href":"https:\/\/megatrimming.com\/fr\/wp-json\/wp\/v2\/media?parent=2399"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/megatrimming.com\/fr\/wp-json\/wp\/v2\/categories?post=2399"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/megatrimming.com\/fr\/wp-json\/wp\/v2\/tags?post=2399"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}