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李克顺 《精细与专用化学品》1995,(7)
为满足国家某工程的要求,化工部成都有机硅研究中心成功地研制了与双组份室温硫化(RTV)硅橡胶配套使用的GBN一213增粘底涂液。该产品由多官能有机硅聚合物基料和增效 相似文献
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化工部成都有机硅研究中心,成功地研制了GMX-B、GMX-R、GMX-W三种型号双组份室温硫化硅橡胶。这三种产品是以活性聚二甲基硅氧烷为基础胶,配合补强填料、辅助填料、颜料等组份,经混炼制得的液体胶料。与交联剂、催化剂混合后,在室温 相似文献
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一种用于高级饭店、宾馆、体育馆等豪华建筑物的嵌缝、粘接密封材料GM系列单组份室温硫化硅酮密封胶已由化工部成都有机硅研究中心研制成功并通过化工部组织的鉴定验收。GM系列单组份RTV硅酮密封胶系以羟基封端的 相似文献
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化工部成都有机硅研究中心成功地研制了与双组份室温硫化(RTV)硅橡胶配套使用的GBN-213增粘底涂液。该产品可使多种材料表面敏化,就地生成能形成化学键合的活性基团,从而使得不具粘接性能的双组份RTV硅橡胶,能够与处理过的基材表面有效 相似文献
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本文综述了单组份室温硫化硅橡胶在汽车工业上的应用,概述了此类单组份室温硫化硅橡胶的合成技术进展、应用技术进展以及我国此类产品的研制及应用情况。 相似文献
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介绍了室温硫化硅橡胶种类与应用范围。以脱醋酸型单组分室温硫化硅橡胶为例,介绍其胶料合成的预缩合反应和胶料接触水分发生的交联硫化反应原理、合成工艺及物料配比等,讨论了各组分对单组分室温硫化硅橡胶性能的影响,归纳了单组分室温硫化硅橡胶的主要质量指标的测定方法。 相似文献
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采用原位填充白炭黑与甲基丙烯酸(酯)改性相结合的方法制备了室温硫化(RTV)硅橡胶胶黏剂,用红外光谱与凝胶渗透色谱表征了RTV硅橡胶的结构及其胶黏剂的相对分子质量,用扫描电子显微镜分析了白炭黑的分散性,并考察了胶黏剂对金属铝黏接性能的影响因素。结果表明,RTV硅橡胶、甲基丙烯酸(酯)与白炭黑形成了共聚物;随着白炭黑含量的增加,胶黏剂的相对分子质量分布变宽;当偶联剂γ-氨丙基三乙氧基硅烷/正钛酸四丁酯(质量比3)质量分数为1.5%,白炭黑质量分数为1.5%,交联剂原硅酸四乙酯及催化剂二月桂酸二丁基锡的质量分数分别为1.0%,0.1%时,胶黏剂粘接铝的最大剪切强度可达到5.64MPa。 相似文献
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综述了特种室温硫化硅橡胶的研究进展.重点介绍了通过添加特殊填料、接枝改性、改变胶料成分等方法.使传统室温硫化硅橡胶具备了特殊性能,如导热、导电、绝缘、耐热、阻燃、防紫外线等。 相似文献
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采用α,ω-二羟基聚二甲基硅氧烷(107胶)、气相白炭黑、自膨胀阻燃剂三聚氰胺磷酸盐(MP)等制备了阻燃脱醇型室温硫化硅橡胶(RTV),研究了MP用量对脱醇型RTV硅橡胶阻燃性能、动态燃烧性能和机械性能的影响,以及MP阻燃脱醇型RTV硅橡胶的热稳定性。用扫描电镜(SEM)考察了MP在RTV硅橡胶的分散情况。结果表明,当MP的用量达50份以上时,脱醇型RTV硅橡胶才具有良好的阻燃性能。但随着MP用量的增加,脱醇型RTV硅橡胶的初始分解温度下降。另外,MP能很均匀地分散在RTV硅橡胶中,使MP添加量增加到50份时其拉伸强度、断裂伸长率也没有受到严重破坏。 相似文献
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In order to find a compatibilizer for epoxy resin/silicone rubber systems, interfacial tension of epoxy resin mixed with modified silicone oils which had the compatible groups to epoxy resin was measured against RTV silicone rubber and silicone oil. From the results, it was found that one of polyether modified silicone oils (EtMPS) had strong interfacial activity. Then using the EtMPS as the compatibilizer, RTV silicone rubber or silicone diamine was filled in epoxy resin. The effects of silicone content of these materials on impact fracture energy and on peel strength were investigated. The impact fracture energy of epoxy resin was increased by the addition of RTV silicone rubber up to two times that of unmodified resin while silicone diamine had almost no effect which might be due to the small molecular weight. T-peel strengths of aluminium plates bonded by epoxy resin filled with RTV silicone rubber and with silicone diamine effectively increased with the increasing of silicone content showing the maximum at 10 ∼ 20 phr. The fracture surfaces after the mechanical tests of these materials were observed by a scanning electron microscope. Many particles of silicone rubber in the size of 1 ∼ 20 μ were observed over the fracture surface. 相似文献
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In order to find a compatibilizer for epoxy resin/silicone rubber systems, interfacial tension of epoxy resin mixed with modified silicone oils which had the compatible groups to epoxy resin was measured against RTV silicone rubber and silicone oil. From the results, it was found that one of polyether modified silicone oils (EtMPS) had strong interfacial activity. Then using the EtMPS as the compatibilizer, RTV silicone rubber or silicone diamine was filled in epoxy resin. The effects of silicone content of these materials on impact fracture energy and on peel strength were investigated. The impact fracture energy of epoxy resin was increased by the addition of RTV silicone rubber up to two times that of unmodified resin while silicone diamine had almost no effect which might be due to the small molecular weight. T-peel strengths of aluminium plates bonded by epoxy resin filled with RTV silicone rubber and with silicone diamine effectively increased with the increasing of silicone content showing the maximum at 10 ~ 20 phr. The fracture surfaces after the mechanical tests of these materials were observed by a scanning electron microscope. Many particles of silicone rubber in the size of 1 ~ 20 μ were observed over the fracture surface. 相似文献
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采用单因素变量法研究了不同的生胶(107胶)分子量,硅烷交联剂、催化剂以及硅烷偶联剂对缩合型室温硫化(RTV)硅橡胶耐热空气老化的影响,并初步探讨了自制有机硅高沸树脂对RTV硅橡胶在空气中耐热性的影响。通过热重分析仪(TGA)表征了RTV硅橡胶的热失重。结果表明,催化剂对RTV硅橡胶的耐热性有很大影响。有机硅高沸树脂可适当提高RTV硅橡胶的耐热性能,且在一定范围内,RTV硅橡胶的最大热失重温度和最终残炭率均随高沸树脂添加量的增加而增加。耐热性较好的RTV硅橡胶组分为:较高分子量的107胶、正硅酸乙酯、氨丙基三乙氧基硅烷、钛酸丁酯,以及适量的有机硅高沸树脂。 相似文献
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用丙烯腈-乙烯基三乙氧基硅烷共聚物作室温硫化型硅橡胶(RTVS)的交联剂,其硫化胶具有良好的耐油性。100份RTVS至少需用30份共聚物才能达到交联的目的。随共聚物用量的增加,硫化胶的介电常数增加。共聚物的分子量对硫化胶的耐油性基本无影响。当共聚物用量分别为31,75和120份时,硫化胶在煤油、苯和柴油中于室温下浸泡24h,其耐油性比一般RTVS硫化胶好。在柴油中,共聚物用量对硫化胶的耐油性影响较小。共聚物用量为50份的硫化胶,其热分解温度(358℃)仅比RTVS低9℃,不影响其使用。 相似文献