中国塑料

中国塑料 ›› 2014, Vol. 28 ›› Issue (01): 22-27 .DOI: 10.19491/j.issn.1001-9278.2014.01.005

• 材料与性能 • 上一篇    下一篇

氰酸酯/聚苯醚/超支化聚硅氧烷接枝纳米SiO2复合材料的性能

李婷婷 颜红侠 王倩倩 冯书耀   

  1. 西北工业大学理学院 陕西省西安市西北工业大学理学院化学系 西北工业大学
  • 收稿日期:2013-09-11 修回日期:2013-10-21 出版日期:2014-01-26 发布日期:2014-01-26

Properties of CE/PPO/Hyperbranched Polysiloxane Grafting SiO2 Composites

Li Ting Ting   

  • Received:2013-09-11 Revised:2013-10-21 Online:2014-01-26 Published:2014-01-26

摘要： 以介电性能优异的聚苯醚(PPO)改性的双酚A型氰酸酯树脂（CE）为基体，分别以超支化聚硅氧烷接枝的纳米二氧化硅（HBPSiO2）和未处理的纳米二氧化硅（nanoSiO2）为改性剂，制备了CE/PPO/HBPSiO2和CE/PPO/nanoSiO2两种三元体系复合材料，并利用傅里叶变换红外光谱仪、差示扫描量热仪等分析手段对HBPSiO2及复合材料的结构与性能进行了研究，结果表明，nanoSiO2的加入有助于提高改性体系的力学性能，且HBPSiO2比nanoSiO2显示出更好的改性效果；CE/PPO/HBPSiO2体系的介电常数均低于CE/PPO/nanoSiO2、CE/PPO、CE体系，而介电损耗因子比CE、CE/PPO体系的小，比CE/PPO/nanoSiO2体系的大。

关键词: 氰酸酯, 超支化聚硅氧烷接枝二氧化硅, 聚苯醚, 力学性能, 介电性能

Abstract: Composites of CE/PPO/HBP-SiO2 and CE/PPO/nano-SiO2 were prepared using CE modified by PPO as a matrix, and HBP-SiO2 and nano-SiO2 as fillers. Infrared spectroscopy confirmed that hyperbranched polysiloxane was grafted onto SiO2 surface. Differential scanning calorimetry showed that HBPSiO2 and nano-SiO2 had catalytic effect on CE/PPO system, and could reduce the curing temperature. The addition of SiO2 improved the mechanical properties of system, and the addition of HBP-SiO2 showed a better effect than nano-SiO2. The dielectric constant of CE/PPO/HBP-SiO2 composite was less than that of CE, CE/PPO, CE/PPO/nano-SiO2, and the dielectric loss factor was smaller than that of CE and CE/PPO, while higher than that of CE/PPO/nano-SiO2.

Key words: cyanate resin, hyperbranched polysiloxane grafting silica, polyphenyleneoxide, mechanical property, dielectric property

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