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硅树脂材料何其多!2
硅树脂材料何其多!2
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有机硅模塑料
上一世纪60年代我国航空工业急需一种能耐强电流、高电压的制作微型开关用的耐弧有机硅模塑料。北京化工研究院开发成功用一甲基三氯硅烷为原料直接水解制作的硅树脂,配以石棉填充料制成耐弧模塑料,解决了航空工业的急需。此材料后转到上海树脂厂生产。后因需用量不多上海树脂厂不再生产,但用户仍需要这种材料,他们不得不向搬迁到四川的晨光化工研究院求援。该院吴盛全等为满足用户急需,改用从一甲基三乙氧基硅烷作起始物料的水解缩合路线制备出性能合乎要求的模塑料用的硅树脂,解决用户燃眉之急。
硅酮树脂包封料
进入上一世纪60年代末期,随着我国电子工业的发展,需用电绝缘性能优异、耐受高温、防潮、不燃烧的有机硅包封料,以封装大、小功率的二极管、三极管、电阻、电容、集成电路等电子器件。在我国较早从事这类树脂开发的有中国科学院化学所张兴华、何纪刚等以及上海树脂厂章基凯、李燕声等。他们开发的多种产品填补了国内空白。
有机硅树脂改性涂料
一般的硅树脂多半是由聚甲基硅氧烷和聚苯基硅氧烷组成。含有苯基的硅树脂与有机树脂的共容性比甲基硅树脂好。在一般涂料中引入含苯基的硅树脂能提高一般涂料的耐温性、耐水性等。在涂料工业中可以将含苯基的硅树脂用共混或共聚的方法制取高性能的含硅氧烷涂料。早在上一世纪60年代天津油漆厂和上海树脂厂就开发成功用有机硅改性合成树脂的涂料。开发出多种性能很好的品种,如既耐热而又黏结性能好的有机硅改性环氧树脂等。
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硅树脂材料何其多!1
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Pyrolyzed to Ceramic, Serene at 1000°C – IOTA OPSZ 1800, The Polymer-Derived Ceramic Solution for Extreme High-Temperature Protection
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