{"id":3740,"date":"2022-11-11T06:57:00","date_gmt":"2022-11-11T06:57:00","guid":{"rendered":"https:\/\/www.chinaptfetube.com\/?p=3740"},"modified":"2025-07-18T07:07:58","modified_gmt":"2025-07-18T07:07:58","slug":"what-are-the-flame-retardant-grades-of-fep-heat-shrinkable-tubes","status":"publish","type":"post","link":"https:\/\/www.chinaptfetube.com\/es\/what-are-the-flame-retardant-grades-of-fep-heat-shrinkable-tubes-article\/","title":{"rendered":"\u00bfCu\u00e1les son los grados ign\u00edfugos de los tubos termorretr\u00e1ctiles de FEP?"},"content":{"rendered":"<p>El grado ign\u00edfugo del tubo termoretr\u00e1ctil FEP est\u00e1 en la norma UL, y existe una norma de ensayo VW-1.<\/p>\n\n\n\n<p>UL, la norma de ensayo VW-1 es una norma relativamente com\u00fan. El experimento estipula que la muestra se mantiene vertical, y el quemador de prueba (altura de la llama 125mm, potencia t\u00e9rmica 500W) quema durante 15 segundos, luego se detiene durante 15 segundos, y se repite 5 veces. .<\/p>\n\n\n\n<p>Las normas de cualificaci\u00f3n del nivel VW-1 de los tubos termorretr\u00e1ctiles de FEP retardantes de llama son las siguientes La propagaci\u00f3n de la llama no debe superar los 60 segundos. 2. La muestra no debe quemarse m\u00e1s de 25%. 3. 3. Las almohadillas de algod\u00f3n quir\u00fargico de la parte inferior no pueden inflamarse por la ca\u00edda de objetos.<\/p>\n\n\n\n<p>Hay 12 tipos de UL94****************** en el grado ign\u00edfugo: HB, V-0, V-1, V-2, 5VA, 5VB, VTM-0, VTM -1, VTM-2, HBF, HF-1, HF-2.<\/p>\n\n\n\n<p>La clasificaci\u00f3n de inflamabilidad UL94 es la norma m\u00e1s utilizada para el comportamiento de inflamabilidad de los materiales pl\u00e1sticos. Se utiliza para evaluar la capacidad de un material para extinguirse despu\u00e9s de ser encendido. Hay muchas formas de juzgarlo seg\u00fan la velocidad de combusti\u00f3n, el tiempo de combusti\u00f3n, la capacidad antigoteo y si se quema el cord\u00f3n de goteo. Existen numerosos valores para cada material probado en funci\u00f3n de su color o grosor. Cuando se selecciona el material de un producto, su clasificaci\u00f3n UL debe cumplir los requisitos de grosor de la pieza de pl\u00e1stico. La clasificaci\u00f3n UL debe indicarse junto con el valor del grosor; no basta con indicar la clasificaci\u00f3n UL sin el grosor.<\/p>\n\n\n\n<p>El grado ign\u00edfugo del pl\u00e1stico aumenta paso a paso de HB, V-2, V-1, V-0, 5VB a 5VA:<\/p>\n\n\n\n<p>HB: El grado ign\u00edfugo m\u00e1s bajo de la norma UL94. Se requiere que para muestras de 3 a 13 mm de espesor, la velocidad de combusti\u00f3n sea inferior a 40 mm por minuto; para muestras, de menos de 3 mm de espesor, la velocidad de combusti\u00f3n sea inferior a 70 mm por minuto; o se extinga antes de la marca de 100 mm.<\/p>\n\n\n\n<p>V-2: Tras dos pruebas de combusti\u00f3n de 10 segundos en la muestra, la llama y la postcombusti\u00f3n se extinguieron en 60 segundos. Las part\u00edculas que gotean pueden inflamar el algod\u00f3n.<\/p>\n\n\n\n<p>V-1: Despu\u00e9s de dos pruebas de combusti\u00f3n de 10 segundos en la muestra, la llama posterior y la postcombusti\u00f3n se extinguieron en 60 segundos. Las part\u00edculas de goteo no deben inflamar el algod\u00f3n.<\/p>\n\n\n\n<p>V-0: Despu\u00e9s de dos pruebas de combusti\u00f3n de 10 segundos en la muestra, la postcombusti\u00f3n y la postcombusti\u00f3n se extinguieron en 30 segundos. Las part\u00edculas de goteo no deben inflamar el algod\u00f3n.<\/p>\n\n\n\n<p>5VB: Despu\u00e9s de cinco pruebas de quemado de 5 seg. en la muestra, la postcombusti\u00f3n y la postllama se extinguen en 60 seg. Las part\u00edculas que gotean no deben inflamar el algod\u00f3n. El quemado posterior est\u00e1 permitido para las muestras a granel.<\/p>\n\n\n\n<p>5VA: Despu\u00e9s de cinco pruebas de quemado de 5 segundos en la muestra, la llama posterior y la postcombusti\u00f3n se extinguen en 30 segundos. Las part\u00edculas de goteo no deben inflamar el algod\u00f3n. No se permite la postcombusti\u00f3n de las muestras a granel.<\/p>\n\n\n\n<p>M\u00e9todo de quemado de cables en UL1581:<\/p>\n\n\n\n<p>1. VW-1: Ensayo de combusti\u00f3n vertical (grado de combusti\u00f3n de cables UL);<\/p>\n\n\n\n<p>2. FT1: prueba de combusti\u00f3n vertical;<\/p>\n\n\n\n<p>3. FT2: Prueba de combusti\u00f3n horizontal;<\/p>\n\n\n\n<p>4. FT4: ensayo de combusti\u00f3n vertical;<\/p>\n\n\n\n<p>5. FT6: Combusti\u00f3n horizontal y prueba de humos (el nivel de combusti\u00f3n del tipo FT es el nivel de combusti\u00f3n del cable el\u00e9ctrico de la norma CSA);<\/p>\n\n\n\n<p>Entre los grados anteriores:VW-1 es el mismo grado que FT1. FT2 es el m\u00e1s f\u00e1cil de aprobar y tiene la nota m\u00e1s baja.<\/p>\n\n\n\n<p>VW-1 es m\u00e1s estricto que FT1, ambos de combusti\u00f3n vertical, los criterios de juicio: 1. La marca de combusti\u00f3n (papel kraft) no puede carbonizarse m\u00e1s de 25%; 2. El tiempo de postcombusti\u00f3n de 5 veces de combusti\u00f3n de 15 segundos no puede superar los 60 segundos; 3. Las gotas ardientes no pueden prender algod\u00f3n; VW-1 requiere 1, 2, 3; FT1 s\u00f3lo requiere 1, 2.<\/p>\n\n\n\n<p>Para la industria del alambre, las normas V-2, V-1, V-0, 5VA y 5VB de la UL94 eval\u00faan los materiales utilizados para los alambres. Durante el ensayo, debe formularse una muestra est\u00e1ndar con el material de ensayo, que no se marcar\u00e1 en el alambre.<\/p>\n\n\n\n<p>VW-1, VW-2, FT-1 y FT-2 eval\u00faan el propio cable. Una vez superada la prueba, el grado correspondiente puede marcarse en el cable. La retardancia a la llama de los cables es completamente diferente de la de UL94. Por ejemplo, un material aislante puede pasar V-0 de UL94 pero no necesariamente VW-1;<\/p>\n\n\n\n<p>Adem\u00e1s, UL94 es el retardante de llama de los materiales aislantes, y los requisitos de retardante de llama de los cables son generalmente en UL758621581; por lo que el retardante de llama en UL94 como V-0 y V-1 no es el retardante de llama de los cables en absoluto; no hay ninguna impresi\u00f3n en el cable AWM. VW-1\/FT1 y V0 prueba de combusti\u00f3n en UL94 son muy diferentes en el equipo:<\/p>\n\n\n\n<p>1. La altura y la temperatura de la llama son diferentes;<\/p>\n\n\n\n<p>2. El flujo de metano utilizado en la prueba tambi\u00e9n es diferente;<\/p>\n\n\n\n<p>3. La contrapresi\u00f3n del metano tambi\u00e9n es diferente;<\/p>\n\n\n\n<p>4. El volumen de la caja de combusti\u00f3n tambi\u00e9n es diferente: VW-1 requiere m\u00e1s de 4 metros c\u00fabicos, mientras que V0 s\u00f3lo necesita m\u00e1s de 0,5 metros c\u00fabicos;<\/p>\n\n\n\n<p>5. Los tiempos de combusti\u00f3n tambi\u00e9n son diferentes 0Gr4OG\\x06;<\/p>\n\n\n\n<p>6. En los resultados de combusti\u00f3n: V0 requiere registrar el tiempo de combusti\u00f3n residual, pero VW-1 no.<\/p>\n\n\n\n<p>Sin embargo, las condiciones de prueba y los m\u00e9todos de prueba de combusti\u00f3n de nivel 5V y combusti\u00f3n VW-1 en UL94 son similares y relativamente cercanos. Nota: Si se trata de equipos de prueba de combusti\u00f3n VW-1 o UL94, debe referirse a ASTM5025 y ASTM5027, UL1581 y UL94 son s\u00f3lo m\u00e9todos de prueba, y los requisitos de los equipos de prueba deben estar de acuerdo con las normas ASTM.<\/p>\n\n\n\n<p>Grado ign\u00edfugo del tubo termorretr\u00e1ctil: VW-1\/FT1 es muy diferente de la prueba de combusti\u00f3n V0 de UL94:<\/p>\n\n\n\n<p>1. La altura y la temperatura de la llama son diferentes;<\/p>\n\n\n\n<p>2. El flujo de metano utilizado en la prueba tambi\u00e9n es diferente;<\/p>\n\n\n\n<p>3. La contrapresi\u00f3n del metano tambi\u00e9n es diferente;<\/p>\n\n\n\n<p>4. El volumen de la caja de combusti\u00f3n tambi\u00e9n es diferente: VW-1 requiere m\u00e1s de 4 metros c\u00fabicos, mientras que V0 s\u00f3lo necesita m\u00e1s de 0,5 metros c\u00fabicos;<\/p>\n\n\n\n<p>5. El n\u00famero de quemas tambi\u00e9n es diferente;<\/p>\n\n\n\n<p>6. En el resultado de la combusti\u00f3n: V0 requiere registrar el tiempo de quemado residual, \u00a1pero VW-1 no!<\/p>","protected":false},"excerpt":{"rendered":"<p>The flame retardant grade of the FEP heat shrinkable tube is in the UL standard, and there is a VW-1 test standard. UL, VW-1 test standard is a relatively common standard. The experiment stipulates that the sample is kept vertical, and the test burner (flame height 125mm, thermal power 500W) burns for 15 seconds, then [&hellip;]<\/p>","protected":false},"author":1,"featured_media":3482,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[129],"tags":[],"class_list":["post-3740","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What are the flame retardant grades of FEP heat shrinkable tubes? - Yozonetech Co., Ltd.<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.chinaptfetube.com\/es\/what-are-the-flame-retardant-grades-of-fep-heat-shrinkable-tubes-article\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What are the flame retardant grades of FEP heat shrinkable tubes? - Yozonetech Co., Ltd.\" \/>\n<meta property=\"og:description\" content=\"The flame retardant grade of the FEP heat shrinkable tube is in the UL standard, and there is a VW-1 test standard. 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UL, VW-1 test standard is a relatively common standard. 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