| 含柔性链端炔基POSS(POSS-LA)的合成及对含硅芳炔树脂的改性 |
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| 引用本文： | 步晓君,周燕,黄发荣.含柔性链端炔基POSS(POSS-LA)的合成及对含硅芳炔树脂的改性[J].高分子材料科学与工程,2017,33(6). |
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| 作者姓名： | 步晓君 周燕 黄发荣 |
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| 作者单位： | 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 |
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| 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℃)。
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| 关 键 词： | 端炔基倍半硅氧烷 含硅芳炔树脂 增强 增韧 |
Preparation of Alkynyls Terminated POSS and Its Modification of Poly(silicane arylacetylene) Resin |
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| Xiaojun Bu,Yan Zhou,Farong Huang.Preparation of Alkynyls Terminated POSS and Its Modification of Poly(silicane arylacetylene) Resin[J].Polymer Materials Science & Engineering,2017,33(6). |
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| Authors: | Xiaojun Bu Yan Zhou Farong Huang |
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| Abstract: | 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 (Td5 ＞436 ℃). |
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| Keywords: | alkynyls terminated polyhedral oligomeric silsesquioxane poly (silicane arylacetylene) resin strengthening toughening |
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