{"id":9492,"date":"2026-01-26T03:09:05","date_gmt":"2026-01-26T03:09:05","guid":{"rendered":"https:\/\/changhongchemical.com\/?p=9492"},"modified":"2026-04-27T11:16:12","modified_gmt":"2026-04-27T11:16:12","slug":"what-you-need-to-know-about-liquid-silicone-rubber","status":"publish","type":"post","link":"https:\/\/changhongchemical.com\/pt\/what-you-need-to-know-about-liquid-silicone-rubber\/","title":{"rendered":"Liquid Silicone Rubber: Properties, Processing, and Common End Uses"},"content":{"rendered":"<p>Liquid silicone rubber is typically evaluated for its balance of heat resistance, flexibility, biocompatibility, and processing efficiency in molded parts. Engineers and buyers usually review curing behavior, viscosity control, molding conditions, and regulatory suitability before adopting it for medical, electrical, or consumer-product use.<\/p>You also find it in fast and clean injection molding. More people are using it all over the world. For example, the market will grow from $2.81 billion in 2023 to $4.97 billion by 2030: People pick it because it is safe, useful, and has special features. <h2>Practical Takeaways<\/h2> <ul> <li>A borracha de silicone l\u00edquido \u00e9 segura. As pessoas a utilizam em produtos m\u00e9dicos e para beb\u00eas. O LSR \u00e9 forte e pode se dobrar sem quebrar. Ele pode suportar temperaturas muito quentes e muito frias. Muitos setores o utilizam, como o de sa\u00fade e o automobil\u00edstico. O LSR \u00e9 bom para o meio ambiente. Voc\u00ea pode recicl\u00e1-lo. Escolha o LSR para projetos que precisam ser <a href=\"https:\/\/changhongchemical.com\/tpo-free-gel-polish-vs-regular-gel-polish-safety-differences\/\" target=\"_blank\" rel=\"noopener\">seguro e de longa dura\u00e7\u00e3o<\/a>.<\/li> <\/ul> <h2>O que \u00e9 borracha de silicone l\u00edquida?<\/h2> <h3>Defini\u00e7\u00e3o e recursos de LSR<\/h3> Liquid silicone rubber is special for many reasons. It starts as two separate liquids. One liquid is the base. The other has a catalyst. When you mix them, they react and become solid. Platinum is used as the catalyst. This keeps the product clean and safe. Factories use machines to mix the liquids evenly. They use a 1:1 ratio. The mixture goes into a mold. Heat makes the liquid turn solid. This process is called liquid injection molding. Liquid silicone rubber has many unique features. Here are some important ones: Liquid silicone rubber is strong in tough places. It does not smell or taste. You find it in kitchen tools and baby items. It works well in medical devices. It does not cause allergies. It stops bacteria from growing. <h3>LSR vs. outros materiais<\/h3> Liquid silicone rubber is different from other silicone and rubber types. The main difference is how you make and use them. Liquid silicone rubber uses injection molding. This gives you clean and exact parts. It also makes less waste. Here is a table that shows how liquid silicone rubber compares to high consistency rubber: Liquid silicone rubber stretches more than high consistency rubber. It works better in hot and cold places. You need special machines to make it. The products are very clean and pure. High consistency rubber can be shaped in more ways. But it does not stretch as much. It may not last as long in hard conditions. Here are some things to remember about LSR and other materials: <ul> <li>O LSR tem uma rede regular de liga\u00e7\u00f5es cruzadas. Isso lhe confere maior elasticidade.<\/li> <li>O LSR n\u00e3o produz subprodutos indesejados durante a cura. Isso o torna mais seguro.<\/li> <li>Voc\u00ea pode usar o LSR para fundi\u00e7\u00e3o, extrus\u00e3o ou moldagem por inje\u00e7\u00e3o. Ele funciona melhor com m\u00e1quinas especiais.<\/li> <\/ul> As novas tecnologias tornaram a borracha de silicone l\u00edquido ainda melhor. Agora, o LSR pode ter caracter\u00edsticas especiais. Alguns exemplos s\u00e3o superf\u00edcies autolubrificantes, alta condutividade t\u00e9rmica e propriedades antibacterianas. As f\u00e1bricas usam m\u00e1quinas avan\u00e7adas para produzir pe\u00e7as pequenas e detalhadas. Elas s\u00e3o usadas em dispositivos eletr\u00f4nicos e m\u00e9dicos. Essas mudan\u00e7as ajudam voc\u00ea a obter produtos melhores. Voc\u00ea tamb\u00e9m ter\u00e1 menos desperd\u00edcio e mais op\u00e7\u00f5es. <h2>Propriedades e composi\u00e7\u00e3o da borracha de silicone l\u00edquida<\/h2> <h3>Estrutura qu\u00edmica e cura<\/h3> Liquid silicone rubber has a special chemical structure. Its backbone is made of siloxane. Siloxane is a chain of silicon and oxygen atoms. This makes the material both strong and bendy. The polymer chains have vinyl groups at their ends. When you mix two parts together, these vinyl groups react with silicone oil that has hydrogen. Platinum helps this reaction happen. Here is what happens during curing: <ol> <li>Os grupos de vinil nas cadeias de pol\u00edmero reagem com as liga\u00e7\u00f5es Si-H do reticulador.<\/li> <li>Essa rea\u00e7\u00e3o une as cadeias.<\/li> <li>O material se torna uma rede s\u00f3lida.<\/li> <\/ol> You can see the main parts in this table: Platinum-cured liquid silicone rubber uses hydrosilylation. This makes the material stronger and better with heat. It also helps factories work faster. Platinum curing keeps molds clean and saves time. Liquid silicone rubber comes in two parts. One part has the platinum catalyst. The other part has methylhydrogensiloxane and an alcohol inhibitor. Long polysiloxane chains are mixed with treated silica. This mix makes the material tough and steady. <h3>Principais propriedades f\u00edsicas<\/h3> A borracha de silicone l\u00edquido tem muitas propriedades f\u00edsicas importantes. Elas a tornam adequada para muitos usos. <ul> <li>A alta pureza significa que \u00e9 seguro para o corpo e para os alimentos. N\u00e3o h\u00e1 subst\u00e2ncias qu\u00edmicas nocivas.<\/li> <li>O material \u00e9 muito resistente e n\u00e3o se rasga facilmente. Alguns tipos n\u00e3o precisam de aquecimento adicional ap\u00f3s a moldagem.<\/li> <li>Para usos sens\u00edveis, voc\u00ea deve manter o material vol\u00e1til abaixo de 0,5%. Alguns tipos j\u00e1 atendem a essa regra.<\/li> <\/ul> Estas s\u00e3o as principais propriedades de uma tabela: <ul> <li>A resist\u00eancia \u00e0 tra\u00e7\u00e3o mostra a for\u00e7a de tra\u00e7\u00e3o que o produto pode suportar antes de se romper.<\/li> <li>O alongamento informa o quanto voc\u00ea pode estic\u00e1-lo antes que ele se rompa. Alguns tipos esticam mais de 1.000%.<\/li> <li>A resist\u00eancia \u00e0 temperatura significa que ele funciona de -50 \u00b0C a mais de 250 \u00b0C.<\/li> <\/ul> Other things like elasticity, compression set, and tear resistance show how well it works. It cures into a strong shape that lasts a long time. Adding things like nanotubes or mineral fillers makes it even stronger and better with heat. Purity is important for special uses. High purity keeps people safe, like in medical tools and baby items. The material does not get hurt by ozone or sunlight. The strong silicone base also helps protect against hits when you add special fillers. <h2>Usos e aplica\u00e7\u00f5es<\/h2> <h3>Usos industriais e m\u00e9dicos<\/h3> A borracha de silicone l\u00edquido \u00e9 usada em muitos <a href=\"https:\/\/changhongchemical.com\/application-areas-and-functions-of-chemical-auxiliaries\/\" target=\"_blank\" rel=\"noopener\">grandes ind\u00fastrias<\/a>. Os dispositivos m\u00e9dicos e de sa\u00fade usam mais de 38,3% de todo o LSR fabricado. Veda\u00e7\u00f5es, juntas e an\u00e9is de veda\u00e7\u00e3o usam mais de 35,8% do total. Esse material \u00e9 escolhido quando a seguran\u00e7a e a confian\u00e7a s\u00e3o muito importantes. <ul> <li>Cuidados com a sa\u00fade e dispositivos m\u00e9dicos (38.3%)<\/li> <li>Veda\u00e7\u00f5es, gaxetas e an\u00e9is de veda\u00e7\u00e3o (35.8%)<\/li> <\/ul> Doctors use liquid silicone rubber for catheters, implants, and tools. It is also in valves, seals, and gaskets. These items must pass strict rules like ISO 10993 and FDA 21 CFR 177.2600. You can trust these products because they do not cause allergies. They also stop bacteria from growing. The car industry uses more LSR every year. You find it in battery seals, gaskets, and connectors. The use of LSR in cars is rising fast, especially with electric cars. <h3>Produtos de consumo e de uso di\u00e1rio<\/h3> Voc\u00ea usa itens feitos com borracha de silicone l\u00edquido <a href=\"https:\/\/changhongchemical.com\/application-areas-and-functions-of-chemical-auxiliaries\/\" target=\"_blank\" rel=\"noopener\">todos os dias<\/a>. Utens\u00edlios de cozinha, itens para beb\u00eas e dispositivos vest\u00edveis geralmente t\u00eam LSR. Voc\u00ea v\u00ea utens\u00edlios de cozinha, ferramentas m\u00e9dicas e pe\u00e7as de autom\u00f3veis em casa e no trabalho. <ul> <li>Utens\u00edlios de cozinha<\/li> <li>Produtos para beb\u00eas<\/li> <li>Dispositivos vest\u00edveis<\/li> <li>Panelas<\/li> <li>Dispositivos m\u00e9dicos<\/li> <li>Componentes automotivos<\/li> <\/ul> Baby items like pacifiers and bottle nipples use LSR. It lasts a long time and stays safe. Silicones that meet FDA and USP Class VI rules do not cause harm. LSR parts can last for many years if used right. They do not get ruined by acids, bases, solvents, or oils. This makes them safe for babies. Food items that touch silicone must follow FDA rules. Silicone must meet 21 CFR Part 177. This keeps food safe from bad chemicals. You can trust silicone that is approved by the FDA for food use. <h2>Vantagens e desvantagens<\/h2> <h3>Benef\u00edcios da LSR<\/h3> Liquid silicone rubber has many good points. It is safe and pure. It bends and stretches well. You can use it for medical tools, baby things, and kitchen items. It does not cause allergies or skin problems. Bacteria do not grow on it. It is safe for food and for touching the body. Liquid silicone rubber is great for making lots of parts fast. The first tools cost more, but each part costs less. Look at this table to see how it matches up with other materials: You can make strong parts that last a long time. There is not much waste. Machines do most of the work, so labor costs are low. The shapes come out clean and exact. <h3>Limita\u00e7\u00f5es e equ\u00edvocos comuns<\/h3> A borracha de silicone l\u00edquido tem algumas desvantagens. Aqui est\u00e3o as principais: <ul> <li>N\u00e3o \u00e9 muito forte em locais com muito estresse<\/li> <li>Alguns produtos qu\u00edmicos, \u00f3leos ou solventes podem danific\u00e1-lo<\/li> <li>Ele pode ficar fraco se ficar muito quente<\/li> <li>Ele n\u00e3o adere bem a outras coisas<\/li> <li>N\u00e3o \u00e9 o melhor para trabalhos el\u00e9tricos de alta tens\u00e3o<\/li> <li>Bolhas de ar ou cura irregular podem ocorrer durante a fabrica\u00e7\u00e3o<\/li> <li>Os tipos especiais podem custar muito caro<\/li> <\/ul> Algumas pessoas acham que o LSR n\u00e3o \u00e9 seguro ou pode causar alergias. Mas estudos mostram que ele n\u00e3o prejudica a pele nem causa alergias. \u00c9 mais seguro do que o l\u00e1tex de borracha natural. Algumas pessoas acham que ele permanece no corpo ou causa doen\u00e7as. Os testes mostram que ela n\u00e3o permanece no corpo nem ajuda no crescimento de bact\u00e9rias. A FDA afirma que \u00e9 seguro para alimentos e uso m\u00e9dico. <h2>Seguran\u00e7a e impacto ambiental<\/h2> <h3>Sa\u00fade e biocompatibilidade<\/h3> Voc\u00ea pode se perguntar por que <strong>borracha de silicone l\u00edquido<\/strong> \u00e9 seguro para as pessoas. Muitos m\u00e9dicos confiam nesse material para objetos usados no corpo por um longo per\u00edodo. Voc\u00ea pode encontr\u00e1-lo em implantes e cateteres. Ele tamb\u00e9m est\u00e1 em outros dispositivos que ficam dentro de voc\u00ea. Veja a seguir os motivos pelos quais ele \u00e9 seguro: <ul> <li>Ele permanece o mesmo em locais quentes ou frios.<\/li> <li>Voc\u00ea pode limp\u00e1-lo com calor ou radia\u00e7\u00e3o.<\/li> <li>Ele n\u00e3o reage com seu corpo.<\/li> <li>N\u00e3o causa alergias.<\/li> <\/ul> M\u00e9dicos e cientistas tomam medidas cuidadosas para verificar se o material \u00e9 seguro. Eles elaboram um plano para testar o material. Fazem testes qu\u00edmicos e biol\u00f3gicos. Escrevem um relat\u00f3rio e o enviam ao FDA. Isso mant\u00e9m as pessoas seguras. <h3>Considera\u00e7\u00f5es ambientais<\/h3> Voc\u00ea pode se perguntar o que acontece com <strong>borracha de silicone l\u00edquido<\/strong> after you use it. This material lasts a long time. It does not turn into microplastics. It comes from silica, which is a natural mineral. It does not put bad chemicals in the air or water. Some factories try new ways to make silicone better for the planet. They mix it with oils from plants. This uses less energy and fewer chemicals. The final product can break down into silicone oils. You can use these oils again. When you recycle silicone, you have two main choices: <ul> <li><strong>Reciclagem mec\u00e2nica<\/strong>: As f\u00e1bricas cortam e trituram silicone velho. Elas o utilizam para fazer novos produtos. Isso economiza energia, mas a qualidade piora depois de muitas vezes.<\/li> <li><strong>Reciclagem de produtos qu\u00edmicos<\/strong>: As f\u00e1bricas quebram o silicone em pequenas partes com calor e produtos qu\u00edmicos. Elas podem fabricar produtos bons novamente. Isso consome mais energia, mas ajuda a evitar o desperd\u00edcio e a polui\u00e7\u00e3o.<\/li> <\/ul> <div class=\"qc-divider-wrapper\"> <div class=\"qc-divider\"><\/div> <\/div> A borracha de silicone l\u00edquido \u00e9 forte e se dobra facilmente. \u00c9 segura para muitas coisas. Pode ser encontrada em ferramentas m\u00e9dicas, eletr\u00f4nicos e itens de cozinha. Ela n\u00e3o \u00e9 danificada pelo calor ou por produtos qu\u00edmicos. O LSR flui facilmente, de modo que as f\u00e1bricas podem produzir pe\u00e7as pequenas com rapidez. \u00c9 preciso observar o grau, o dur\u00f4metro e a pureza antes de escolher o LSR. Sempre obtenha as folhas de dados t\u00e9cnicos. Certifique-se de que ele tenha a aprova\u00e7\u00e3o da FDA ou da USP Classe VI para uso m\u00e9dico ou aliment\u00edcio. Se n\u00e3o tiver certeza, pe\u00e7a ajuda aos fornecedores ou fabricantes. Eles podem ajud\u00e1-lo a escolher o LSR certo para o seu projeto. <h2>PERGUNTAS FREQUENTES<\/h2> <h3>Qual \u00e9 o principal uso da borracha de silicone l\u00edquido?<\/h3> A borracha de silicone l\u00edquido est\u00e1 presente em muitas coisas. Voc\u00ea a v\u00ea em dispositivos m\u00e9dicos e produtos para beb\u00eas. Ela tamb\u00e9m est\u00e1 presente em utens\u00edlios de cozinha. As f\u00e1bricas a escolhem porque ela \u00e9 segura e resistente. Ela pode se dobrar sem quebrar. Voc\u00ea tamb\u00e9m a encontra em veda\u00e7\u00f5es e gaxetas. Os dispositivos vest\u00edveis tamb\u00e9m o utilizam. <h3>O que torna a borracha de silicone l\u00edquido diferente do silicone comum?<\/h3> A borracha de silicone l\u00edquida come\u00e7a como um l\u00edquido. Ela se torna s\u00f3lida ap\u00f3s a cura. O silicone comum geralmente \u00e9 um s\u00f3lido ou um gel. O LSR usa um processo de inje\u00e7\u00e3o especial. Isso torna as pe\u00e7as mais limpas e mais exatas. <h3>O que voc\u00ea deve verificar antes de escolher a LSR para o seu projeto?<\/h3> Verifique primeiro o grau e a dureza. A pureza tamb\u00e9m \u00e9 importante. Procure por <a href=\"https:\/\/changhongchemical.com\/what-is-an-antifoaming-agent-and-why-you-need-it%EF%BC%9F\/\" target=\"_blank\" rel=\"noopener\">Aprova\u00e7\u00e3o m\u00e9dica ou da FDA<\/a> se voc\u00ea precisar de seguran\u00e7a. Solicite aos fornecedores as folhas de dados t\u00e9cnicos. Isso o ajudar\u00e1 a escolher o melhor tipo. <h3>Quais s\u00e3o os benef\u00edcios de seguran\u00e7a do uso do LSR?<\/h3> O LSR n\u00e3o causa alergias ou problemas de pele. Ele impede o crescimento de bact\u00e9rias. N\u00e3o reage com seu corpo. Os m\u00e9dicos o utilizam para implantes e ferramentas. Voc\u00ea pode us\u00e1-lo para alimentos e itens para beb\u00eas. <h3>O que acontece com a borracha de silicone l\u00edquida depois que voc\u00ea a joga fora?<\/h3> O LSR dura muito tempo. Ele n\u00e3o se transforma em micropl\u00e1sticos. As f\u00e1bricas podem <a href=\"https:\/\/changhongchemical.com\/why-ama-monomer-is-the-secret-behind-stronger-plastics\/\" target=\"_blank\" rel=\"noopener\">recicl\u00e1-lo por meio de moagem<\/a> ou uso de produtos qu\u00edmicos. N\u00e3o polui o ar ou a \u00e1gua.<h2>What engineers and buyers usually review<\/h2><ul><li>Viscosity behavior and cure profile during molding or processing.<\/li><li>Heat resistance, compression set, flexibility, and long-term stability.<\/li><li>Regulatory suitability for medical, electrical, or consumer-product use.<\/li><li>Supplier consistency, packaging, and production-support capability.<\/li><\/ul>\n\n\n<p><strong>Related product references:<\/strong> For formulation review or sourcing comparison, see <a href=\"https:\/\/changhongchemical.com\/product\/lcsorb-360-cas-103597-45-1\/\">CHLUMIUV 360<\/a> e <a href=\"https:\/\/changhongchemical.com\/product\/lcsorb-uv-1577-cas-147315-50-2\/\">CHLUMIUV UV-1577<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>Liquid silicone rubber is typically evaluated for its balance of heat resistance, flexibility, biocompatibility, and processing efficiency in molded parts. Engineers and buyers usually review curing behavior, viscosity control, molding conditions, and&#8230;<\/p>","protected":false},"author":1,"featured_media":9495,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[114],"tags":[],"class_list":["post-9492","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-catalysts-chemical-auxiliary-agents"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Liquid Silicone Rubber: Properties, Processing, and Common End Uses | Changhong Chemical<\/title>\n<meta name=\"description\" content=\"Liquid silicone rubber is typically evaluated for its balance of heat resistance, flexibility, biocompatibility, and processing efficiency in molded...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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