| 膨胀型阻燃剂对热硫化硅橡胶阻燃性能的影响 |
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| 引用本文： | 郭建华,曾幸荣,李红强,罗权焜.膨胀型阻燃剂对热硫化硅橡胶阻燃性能的影响[J].弹性体,2011,21(4):5-9. |
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| 作者姓名： | 郭建华 曾幸荣 李红强 罗权焜 |
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| 作者单位： | 华南理工大学高分子系,广东 广州,510640 |
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| 基金项目： | 广东省科技计划项目(2002009B011400042); 惠州市产学研结合项目(2009B010004012); 惠城区科技计划项目 |
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| 摘 要： | 研究了膨胀型阻燃剂聚磷酸铵（APP）、季戊四醇（PER）和三聚氰胺（MEL）对甲基乙烯基硅橡胶的硫化特性、力学性能和阻燃性能的影响,通过观察硅橡胶的燃烧灰烬,研究了硅橡胶的燃烧行为和膨胀型阻燃剂对硅橡胶的阻燃机理。结果表明,随着阻燃剂APP用量的增大,硅橡胶的正硫化时间延长,焦烧时间缩短,力学性能下降,阻燃性能提高。不加阻燃剂的硅橡胶的氧指数为27.4%,当APP用量为40份时,硅橡胶的氧指数为28.6%,垂直燃烧等级为FV-0级;随着膨胀型阻燃剂APP/PER/MEL用量的增大,硅橡胶的氧指数增加,当APP/PER/MEL用量分别为30/5/5份时,硅橡胶的氧指数为32%,垂直燃烧等级为FV-0级。硅橡胶的燃烧灰烬具有明显的＂壳-芯＂结构,表明燃烧过程中硅橡胶分子链和填料发生了相分离,其中壳层为白色致密物,随着膨胀型阻燃剂用量的增大,芯层颜色由半透明白色转变为黑色,表明膨胀型阻燃剂有利于成炭阻燃。
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| 关 键 词： | 硅橡胶 膨胀型阻燃剂 硫化 力学性能 阻燃性能 |
Effect of intumescent flame retardants on flame-retarded properties of silicone rubber vulcanizates |
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| GUO Jian-hua,ZENG Xing-rong,LI Hong-qiang,LUO Quan-kun.Effect of intumescent flame retardants on flame-retarded properties of silicone rubber vulcanizates[J].China Elastomerics,2011,21(4):5-9. |
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| Authors: | GUO Jian-hua ZENG Xing-rong LI Hong-qiang LUO Quan-kun |
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| Affiliation: | GUO Jian-hua,ZENG Xing-rong,LI Hong-qiang,LUO Quan-kun(College of Materials Science and Engineering,South China University of Technology,Guangzhou 510640,China) |
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| Abstract: | The effects of intumescent flame retardants(IFR) such as APP,PER and MEL on the curing characteristics,mechanical properties and flame-retarded properties of silicone rubber(MVQ) were investigated.The ignition residue of MVQ vulcanizates was observed to study combustion behavior and flame retardant mechanism of IFR.The results showed that the optimum time increases and scorch time decreases with the addition of APP,and the mechanical properties of MVQ decrease and the flame-retarded properties are enhanced ... |
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| Keywords: | silicone rubber intumescent flame retardant curing mechanical property flame-retarded property |
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