文献类型：期刊文献

中文题名：含柔性链端炔基POSS(POSS-LA)的合成及对含硅芳炔树脂的改性

英文题名：Preparation of Alkynyls Terminated POSS and Its Modification of Poly(silicane arylacetylene)Resin

作者：步晓君[1];周燕[1];黄发荣[1]

机构：[1]特种功能高分子材料及相关技术教育部重点实验室(华东理工大学),华东理工大学材料科学与工程学院,上海200237

年份：2017

卷号：33

期号：6

起止页码：24

中文期刊名：高分子材料科学与工程

外文期刊名：Polymer Materials Science & Engineering

收录：CSTPCD;;EI(收录号：20173804179681);Scopus;北大核心:【北大核心2014】；CSCD:【CSCD2017_2018】；

语种：中文

中文关键词：端炔基倍半硅氧烷;含硅芳炔树脂;增强;增韧

外文关键词：alkynyls terminated polyhedral oligomeric silsesquioxane;poly(silicane arylacetylene)resin;strengthening;toughening

摘要：通过水解缩聚、巯烯加成及酯化反应合成了八(十一烷酸丁炔醇酯基硫醚丙基)笼型倍半硅氧烷(POSS-LA),并通过红外光谱、核磁共振谱、差示扫描量热法等对POSS-LA的结构及性能进行了表征。用POSS-LA与含硅芳炔树脂(PSA)共混制得改性树脂LP-PSA,并对改性LP-PSA树脂进行了表征。研究表明,改性LP-PSA固化物的强度及韧性随POSS-LA的加入而提高。当POSS-LA的质量分数为15%时,弯曲强度可提升86%,冲击断裂能可提升91%。此外,LP-PSA固化物还显示了良好的热稳定性(热分解温度T_(d5)>436℃)。
A novel alkynyls terminated polyhedral oligomeric silsesquioxane(POSS-LA)was synthesized through hydrolysis condensation,thiol-ene addition and esterification.The structures and properties of POSS-LA were characterized by FT-IR,NMR,DSC,etc.POSS-LA was used to modify the poly(silicane arylacetylene)(PSA)resin through blending to obtain a series of LP-PSA resins.After measurements of properties,the LP-PSA resins were cured.The resulting LP-PSA thermosets show both enhanced strength and toughness.When the mass fraction of POSS-LA is 15%,the LP-PSA thermoset exhibits 86%and 91%increment in the flexural strength and the impact fracture energy,respectively.In addition,the LP-PSA thermosets exhibit good thermal stability in nitrogen(T_(d5)〉436℃).