共查询到17条相似文献,搜索用时 125 毫秒
1.
2.
3.
4.
5.
6.
室温固化高强度高剥离环氧胶粘剂 总被引:9,自引:4,他引:5
介绍了一种由液体聚硫橡胶,活性增粘剂改性环氧树脂──聚酰胺胶粘剂。介绍了其配方、基本性能、耐介质、耐老化性能。讨论了聚硫液体橡胶、活性增粘剂与环氧树脂的比例对性能的影响。 相似文献
7.
8.
9.
正由锦西化工研究院有限公司申请的专利(公开号CN 104558584A,公开日期2015-04-29)"一种环氧端基聚硫代醚液体橡胶的合成方法",提供了一种环氧端基聚硫代醚液体橡胶的合成方法:由硫代二甘醇、羟乙基-2-羟丙基硫醚等为主单体合成巯端基聚硫代醚液体橡胶,然后以聚乙二醇二缩水甘油醚树脂为转化剂,将巯端基转化成环氧端基,最终生成产品。该工艺的优点是:采用聚乙二醇二缩水甘油醚树脂作为端基转化剂, 相似文献
10.
11.
A series of polysulfide‐based polyureas was synthesized, which were based on isophorone diisocyanate (IPDI), liquid polysulfide and 2,5‐diamino‐3,6‐dimethylmercaptotoluene (Ethacure‐300). The structure and mechanical properties of these elastomers were investigated using dynamic mechanical thermal analysis, differential scanning calorimetry, stress–strain analysis, water‐resistance and oil‐resistance tests. The results showed that there was phase segregation between soft and hard segments in polysulfide‐based polyurea. With the increase in number‐average relative molar mass and content of liquid polysulfide, the tensile strength decreased while the ultimate elongation increased. The effect of number‐average relative molar mass of polysulfide and hard‐segment content on oil resistance is also discussed. Copyright © 2003 Society of Chemical Industry 相似文献
12.
In this article, mechanical and compression set properties, swelling property, and stress–strain behavior during compression of polysulfide sealants based on different polysulfide resin were investigated. The results showed that molecular weight and cross‐linking agent of liquid polysulfide resin had significant influence on mechanical and compression set properties of the sealants. The sealants based on higher molecular weight polysulfide resin had higher mechanical properties. At the same time, lower cross‐linking agent in polysulfide resin produced lower cross‐link density and higher swelling property, which resulted in higher compression set value of the sealant. However, when different molecular weight polysulfide resins were used in the sealant simultaneously, the testing results indicated that the compression performance of the sealants was significantly enhanced, while mechanical properties of the sealants kept nearly unchanged. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010 相似文献
13.
14.
15.
16.
为了提高苯并嗯嗪树脂的性能,使用液态聚硫橡胶对苯并嗯嗪树脂进行了改性研究。实验将不同配比的聚硫橡胶与苯并嚼嗪树脂进行共混并固化,利用傅立叶红外光谱(FTIR)、差示扫描量热法(DSC)、动态热机械分析仪(DMTA)分析了共混体系的结构、固化行为和玻璃化转变,测定了共混体系的热失重和冲击强度,分析比较了不同聚硫橡胶含量共混体系的结构、热性能和力学性能。结果表明改性苯并嗯嗪树脂的热性能和力学性能均得到不同程度的改善。得出如下结论:使用液态聚硫橡胶改性苯并嗯嗪树脂时,当聚硫橡胶加入量为5份(苯并嗯嗪树脂为100质量份)时,得到的改性树脂和纯嗯嗪树脂相比,韧性和热稳定性有显著提高,玻璃化转变温度也略有提高,复合材料的综合性能最好。 相似文献