{"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\/pt\/the-composition-and-source-of-rubber\/","title":{"rendered":"A composi\u00e7\u00e3o e a fonte da borracha"},"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>Fonte<\/strong><\/p>\n\n\n\n<p>A palavra borracha vem da palavra indiana Cau-uchu, que significa &quot;\u00e1rvore chorona&quot;. A borracha natural \u00e9 proveniente do l\u00e1tex de borracha que flui da seringueira de tr\u00eas folhas ap\u00f3s a solidifica\u00e7\u00e3o e secagem. Quando J. Priestley, um qu\u00edmico ingl\u00eas, descobriu em 1770 que a borracha poderia ser usada para apagar escrita a l\u00e1pis, o termo borracha ainda \u00e9 usado hoje. A cadeia molecular da borracha pode ser reticulada. Quando a borracha \u00e9 deformada por for\u00e7a externa, ela tem a capacidade de se recuperar rapidamente e tem boas propriedades f\u00edsicas e mec\u00e2nicas e estabilidade qu\u00edmica. A borracha \u00e9 a mat\u00e9ria-prima b\u00e1sica da ind\u00fastria da borracha, amplamente utilizada na fabrica\u00e7\u00e3o de pneus, mangueiras de borracha, fitas, cabos e outros produtos de borracha. A seringueira de tr\u00eas folhas fornece a borracha mais comercial. Ela secreta uma grande quantidade de seiva contendo emuls\u00e3o de borracha quando \u00e9 ferida, como quando a casca do caule \u00e9 cortada.<\/p>\n\n\n\n<p>Al\u00e9m disso, figueiras e algumas plantas Euphorbidiaceae tamb\u00e9m fornecem borracha. A Alemanha tentou obter borracha dessas plantas quando seu suprimento de borracha foi cortado durante a Segunda Guerra Mundial, mas depois mudou para borracha artificial.<\/p>\n\n\n\n<p>As primeiras seringueiras foram cultivadas na Am\u00e9rica do Sul, mas foram transplantadas em grandes n\u00fameros para o Sudeste Asi\u00e1tico. De fato, a \u00c1sia se tornou a fonte mais importante de borracha.<\/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>Ingredientes<\/strong><\/p>\n\n\n\n<p>A borracha natural \u00e9 feita de l\u00e1tex, e alguns dos componentes n\u00e3o-borracha contidos no l\u00e1tex permanecem na borracha natural s\u00f3lida. A borracha natural geral cont\u00e9m hidrocarboneto de borracha 92%-95% e hidrocarboneto n\u00e3o-borracha 5%-8%. Devido a diferentes m\u00e9todos de produ\u00e7\u00e3o, diferentes \u00e1reas de produ\u00e7\u00e3o e at\u00e9 mesmo diferentes esta\u00e7\u00f5es de coleta de goma, as propor\u00e7\u00f5es desses ingredientes podem variar, mas est\u00e3o basicamente dentro da faixa.<\/p>\n\n\n\n<p>prote\u00edna pode promover a vulcaniza\u00e7\u00e3o da borracha, retardando o envelhecimento. Por outro lado, a prote\u00edna tem forte absor\u00e7\u00e3o de \u00e1gua, pode causar mofo de absor\u00e7\u00e3o de umidade da borracha, decl\u00ednio do isolamento, prote\u00edna e aumentar as defici\u00eancias da termog\u00eanese.<\/p>\n\n\n\n<p>Extrato de acetona \u00e9 composto por alguns \u00e1cidos graxos avan\u00e7ados e subst\u00e2ncias ester\u00f3is, alguns dos quais desempenham o papel de agentes e promotores naturais antienvelhecimento, e podem ajudar os complexos de p\u00f3 no processo de mistura e desempenhar um papel no amolecimento da borracha.<\/p>\n\n\n\n<p>As cinzas cont\u00eam principalmente fosfato de magn\u00e9sio, fosfato de c\u00e1lcio e outros sais, com uma pequena quantidade de cobre, mangan\u00eas, ferro e outros compostos met\u00e1licos, porque esses \u00edons met\u00e1licos vari\u00e1veis podem promover o envelhecimento da borracha, portanto seu conte\u00fado deve ser controlado.<\/p>\n\n\n\n<p>A umidade na borracha seca n\u00e3o \u00e9 mais do que 1%, que pode ser vol\u00e1til no processo de processamento. Mas quando o teor de umidade \u00e9 muito alto, isso n\u00e3o s\u00f3 tornar\u00e1 a borracha bruta f\u00e1cil de moldar no processo de armazenamento, mas tamb\u00e9m afetar\u00e1 o processamento da borracha, como o agente complexo \u00e9 f\u00e1cil de agrupar ao misturar; \u00e9 f\u00e1cil produzir bolhas no processo de calandragem e prensagem, e bolhas ou esponjosas no processo de vulcaniza\u00e7\u00e3o.<\/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\/pt\/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&hellip;","_links":{"self":[{"href":"https:\/\/megatrimming.com\/pt\/wp-json\/wp\/v2\/posts\/2399","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/megatrimming.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/megatrimming.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/megatrimming.com\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/megatrimming.com\/pt\/wp-json\/wp\/v2\/comments?post=2399"}],"version-history":[{"count":1,"href":"https:\/\/megatrimming.com\/pt\/wp-json\/wp\/v2\/posts\/2399\/revisions"}],"predecessor-version":[{"id":2401,"href":"https:\/\/megatrimming.com\/pt\/wp-json\/wp\/v2\/posts\/2399\/revisions\/2401"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/megatrimming.com\/pt\/wp-json\/wp\/v2\/media\/2384"}],"wp:attachment":[{"href":"https:\/\/megatrimming.com\/pt\/wp-json\/wp\/v2\/media?parent=2399"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/megatrimming.com\/pt\/wp-json\/wp\/v2\/categories?post=2399"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/megatrimming.com\/pt\/wp-json\/wp\/v2\/tags?post=2399"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}