CN107760254A - 一种高阻燃防火硅酮密封胶 - Google Patents

一种高阻燃防火硅酮密封胶 Download PDF

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CN107760254A
CN107760254A CN201711127518.1A CN201711127518A CN107760254A CN 107760254 A CN107760254 A CN 107760254A CN 201711127518 A CN201711127518 A CN 201711127518A CN 107760254 A CN107760254 A CN 107760254A
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王婷
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Abstract

本发明提供一种高阻燃防火硅酮密封胶，是由下述质量份数的成分制备而成的：端羟基聚二甲基硅氧烷60～120份、阻燃剂40～100份、无机填料50～80份、交联剂10～30份、偶联剂1‑4份、催化剂4～8份、防老剂3‑7份，所述密封胶具有优异的阻燃性能、耐老化、加工方便、质量稳定的优点。

Description

一种高阻燃防火硅酮密封胶
技术领域
本发明涉及高分子结构密封胶技术领域，特别是涉及一种高阻燃防火硅酮密封胶。
背景技术
密封胶使用时是一种流动的或可挤注的不定形材料，能嵌填封闭接缝，能依靠干燥、温度变化、溶剂挥发、化学交联与基材稳定粘结，并逐渐定型成为塑性固态、粘弹态或弹性密封材料。为保证密封功能，密封胶应具备以下基本特性：良好的嵌填、挤注施工性，储存稳定，无毒或低毒害；对液体、气体等介质低渗透性；能承受接缝位移并随伸缩运动而变形；在接缝中经受反复变形后，能保证充分恢复其性能和形状；有足够强度，能承受应力；与接缝基面粘结稳定，不发生剥离和脱胶；高温下不过度软化，低温下不脆裂；耐气候，不粉化、龟裂、溶解或过度收缩，有足够寿命；特定场合使用时有特定性能，如：耐磨、抗穿刺、耐腐蚀、抗滚压、不燃、不污染、绝缘或导电等。
发明内容
本发明主要解决的技术问题是提供一种高阻燃防火硅酮密封胶，具有优异的阻燃性能、耐老化、加工方便、质量稳定的优点。
为解决上述技术问题，本发明采用的一个技术方案是：
提供一种高阻燃防火硅酮密封胶，是由下述质量份数的成分制备而成的：
端羟基聚二甲基硅氧烷60～120份、
阻燃剂40～100份、
无机填料50～80份
交联剂10～30份
偶联剂1-4份
催化剂4～8份、
防老剂3-7份
进一步的，所述聚二甲基硅氧烷的粘度为20000～40000Pa·s。
进一步的，所述阻燃剂为氮系阻燃剂20-50份和无机阻燃剂20-50份的混合阻燃剂。
更进一步的，所述氮系阻燃剂为三聚氰胺、三聚氰胺尿酸盐(MAC)中的一种或多种的混合物。
更进一步的，所述无机阻燃剂为三氧化二锑、氢氧化镁、氢氧化铝及硅系阻燃剂中的一种或几种的混合物。
进一步的，所述无机填料为经过表面改性的超细碳酸钙或气相白炭黑。
进一步的，所述交联剂为甲基三甲氧基硅烷、甲基三乙氧基硅烷、乙烯基三丁酮肟基硅烷或四丁酮肟基硅烷中的一种或多种的混合物。
进一步的，所述偶联剂为γ-氨丙基甲基二乙氧基硅烷、N-(β-氨乙基)-γ-氨丙基甲基二甲氧基硅烷、γ-氨丙基三乙氧基硅烷、γ-(2,3-环氧丙氧)丙基三甲氧基硅烷的任意一种或几种；所述交联剂为甲基三甲氧基硅烷、二甲基二甲氧基硅烷、甲基三乙氧基硅烷、聚甲基三乙氧基硅烷的任意一种或几种。
进一步的，所述催化剂为钛酸异丙酯、钛酸丁酯或二月桂酸二丁基锡的任意一种或几种。
进一步的，所述防老剂为防老剂A、防老剂RD、防老剂4010、防老剂264任意一种或几种。
本发明与现有技术相比有如下优点：
1)交联剂采用烷氧基硅烷，不仅能够加深密封胶的交联深度，提高硬度和其拉伸粘结强度。交联剂同时与偶联剂配合使用，还可以增强粘结力、调整固化时间，方便施工。
2)所述阻燃剂为氮系阻燃剂20-50份和无机阻燃剂20-50份的混合阻燃，当其配合使用，具有良好的协同阻燃效应，阻燃效果不会随着胶存放时间的延长而变差。
3)选用的填料无毒、绿色环保。
具体实施方式
实施例一
一种高阻燃防火硅酮密封胶，是由下述质量份数的成分制备而成的：
端羟基聚二甲基硅氧烷60份、
阻燃剂40份、
无机填料50份
交联剂10份
偶联剂1份
催化剂4份、
防老剂3份
所述聚二甲基硅氧烷的粘度为20000Pa·s，所述阻燃剂为三聚氰胺、三氧化二锑，所述无机填料为经过表面改性的超细碳酸钙，所述交联剂为甲基三甲氧基硅烷，所述偶联剂为γ-氨丙基甲基二乙氧基硅烷，所述催化剂为钛酸异丙酯，所述防老剂为防老剂A。
实施例二
端羟基聚二甲基硅氧烷80份、
阻燃剂60份、
无机填料60份
交联剂150份
偶联剂2份
催化剂4份、
防老剂4份
所述聚二甲基硅氧烷的粘度为20000Pa·s，所述阻燃剂为磷酸三甲苯酯(TCP)、氢氧化镁，所述无机填料为经过表面改性的超细碳酸钙，所述交联剂为甲基三乙氧基硅烷，所述偶联剂为N-(β-氨乙基)-γ-氨丙基甲基二甲氧基硅烷；所述催化剂为钛酸丁酯，所述防老剂为防老剂RD。
实施例三
端羟基聚二甲基硅氧烷100份、
阻燃剂80份、
无机填料60份
交联剂20份
偶联剂3份
催化剂6份、
防老剂4份
所述聚二甲基硅氧烷的粘度为30000Pa·s，所述阻燃剂为氢氧化铝和三聚氰胺的配合，所述无机填料为气相白炭黑，所述交联剂为乙烯基三丁酮肟基硅烷或四丁酮肟基硅烷，所述偶联γ-氨丙基三乙氧基硅烷；所述催化剂为二月桂酸二丁基锡，所述防老剂为防老剂4010。
实施例四
端羟基聚二甲基硅氧烷120份、
阻燃剂100份、
无机填料80份
交联剂30份
偶联剂4份
催化剂8份、
防老剂7份
所述聚二甲基硅氧烷的粘度为40000Pa·s，所述阻燃剂为氢氧化铝和三聚氰胺尿酸盐(MAC)的配合，所述无机填料为气相白炭黑，所述交联剂为四丁酮肟基硅烷中，所述偶联剂为γ-(2,3-环氧丙氧)丙基三甲氧基硅烷；所述催化剂为二月桂酸二丁基锡，所述防老剂为防老剂264。
实施例五
上述任一实施例中的高阻燃防火硅酮密封胶，是由下述制备步骤制备而成的：按照配方重量称好原料，先将端羟基聚二甲基硅氧烷、无机填料和阻燃剂加入高速搅拌机中搅拌混合均匀，再加入交联剂、偶联剂、催化剂、防老剂，充分搅拌，混合均匀后通入双螺杆混炼挤出机中制得产品。
测试结果
表一
抗拉强度 伸长率 撕裂强度 位移能力
实施例一 3.0MPa 400％ 24MPa 32级
实施例二 3.2MPa 420％ 26MPa 32级
实施例三 3.3MPa 430％ 28MPa 34级
实施例四 4.5MPa 430％ 30MPa 34级
以上仅是本发明的优选实施方式，应当指出的是，上述优选实施方式不应视为对本发明的限制，本发明的保护范围应当以权利要求所限定的范围为准。对于本技术领域的普通技术人员来说，在不脱离本发明的精神和范围内，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (10)

1.一种高阻燃防火硅酮密封胶，是由下述质量份数的成分制备而成的：
端羟基聚二甲基硅氧烷60～120份、
阻燃剂40～100份、
无机填料50～80份
交联剂10～30份
偶联剂1-4份
催化剂4～8份、
防老剂3-7份。
2.如权利要求1所述的高阻燃防火硅酮密封胶，其特征在于，所述聚二甲基硅氧烷的粘度为20000～40000Pa·s。
3.如权利要求1所述的高阻燃防火硅酮密封胶，其特征在于，所述阻燃剂为氮系阻燃剂20-50份和无机阻燃剂20-50份的混合阻燃剂。
4.如权利要求3所述的高阻燃防火硅酮密封胶，其特征在于，所述氮系阻燃剂为三聚氰胺、三聚氰胺尿酸盐(MAC)中的一种或多种的混合物。
5.如权利要求3所述的阻燃型硅酮结构密封胶，其特征在于，所述无机阻燃剂为三氧化二锑、氢氧化镁、氢氧化铝及硅系阻燃剂中的一种或几种的混合物。
6.如权利要求1所述的高阻燃防火硅酮密封胶，其特征在于，所述无机填料为经过表面改性的超细碳酸钙或气相白炭黑。
7.如权利要求1所述的高阻燃防火硅酮密封胶，其特征在于，所述交联剂为甲基三甲氧基硅烷、甲基三乙氧基硅烷、乙烯基三丁酮肟基硅烷或四丁酮肟基硅烷中的一种或多种的混合物。
8.如权利要求1所述的高阻燃防火硅酮密封胶，其特征在于，所述偶联剂为γ-氨丙基甲基二乙氧基硅烷、N-(β-氨乙基)-γ-氨丙基甲基二甲氧基硅烷、γ-氨丙基三乙氧基硅烷、γ-(2,3-环氧丙氧)丙基三甲氧基硅烷的任意一种或几种；所述交联剂为甲基三甲氧基硅烷、二甲基二甲氧基硅烷、甲基三乙氧基硅烷、聚甲基三乙氧基硅烷的任意一种或几种。
9.如权利要求1所述的高阻燃防火硅酮密封胶，其特征在于，所述催化剂为钛酸异丙酯、钛酸丁酯或二月桂酸二丁基锡中的一种或几种的混合物。
10.如权利要求1所述的高阻燃防火硅酮密封胶，其特征在于，所述防老剂为防老剂A、防老剂RD、防老剂4010、防老剂264中的一种或几种的混合物。
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110467902A (zh) * 2019-08-02 2019-11-19 上海嗣高新材料科技有限公司 一种船用防火密封胶及其制备方法
CN111073290A (zh) * 2019-12-04 2020-04-28 沈阳化工大学 一种4-（3-硫代脲啶）磺酰胺改性go阻燃硅橡胶的制备方法
CN111087816A (zh) * 2019-12-06 2020-05-01 沈阳化工大学 一种2-氨基-3-氟-5-三氟甲基吡啶改性go阻燃硅橡胶的制备方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110467902A (zh) * 2019-08-02 2019-11-19 上海嗣高新材料科技有限公司 一种船用防火密封胶及其制备方法
CN111073290A (zh) * 2019-12-04 2020-04-28 沈阳化工大学 一种4-（3-硫代脲啶）磺酰胺改性go阻燃硅橡胶的制备方法
CN111087816A (zh) * 2019-12-06 2020-05-01 沈阳化工大学 一种2-氨基-3-氟-5-三氟甲基吡啶改性go阻燃硅橡胶的制备方法

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