氰基化钛酸钡对聚芳醚腈介电薄膜结构与性能的影响  

Effect of Cyanied Barium Titanate on the Structure and Properties of Poly(aryl ether nitrile)Dielectric Films

作　　者：杨霜 陈思怡 涂丽娟 左芳[1] 尤勇 YANG Shuang;CHEN Siyi;TU Lijuan;ZUO Fang;YOU Yong(Key Laboratory of General Chemistry of the National Ethnic Affairs Commission,School of Chemistry and Environment,Southwest Minzu University,Chengdu 610041,China)

机构地区：[1]西南民族大学化学与环境学院,化学基础国家民委重点实验室,四川成都610041

出　　处：《塑料工业》2023年第4期138-142,164,共6页China Plastics Industry

基　　金：国家自然科学基金青年项目(52203102);四川省自然科学基金青年项目(2022NSFSC2009);西南民族大学中央高校基本科研业务费专项基金项目(2021NQNCZ20)。

摘　　要：首先通过化学接枝法在钛酸钡纳米粒子(BT)表面依次接枝了异佛尔酮二异氰酸酯(IPDI)和3-氨基苯氧基邻苯二甲腈(3-APN),得到氰基功能化的钛酸钡纳米粒子(BT-CN);接下来,将其与聚芳醚腈(PEN)复合,制备了聚芳醚腈/氰基化钛酸钡复合介电薄膜。通过傅里叶红外光谱(FTIR)、X射线光电子能谱(XPS)、热重分析仪(TG)证实了BT成功进行了表面功能化。此外,BT-CN的加入可以有效增强PEN复合薄膜的热学、力学和介电性能;相较于纯PEN,复合薄膜的玻璃化转变温度增加了12℃,拉伸强度提高了9.6%,1 kHz时介电常数提高了227.8%。综上所述,氰基功能化有利于改善有机-无机界面相容性,从而进一步提高复合薄膜的综合性能。In this work,cyano-functionalized barium titanate nanoparticles(BT-CN)were prepared by sequentially grafting isophorone diisocyanate(IPDI)and 3-aminophenoxyphthalonitrile(3-APN)on the surface of barium titanate(BT),and then incorporated into the poly(arylene ether nitrile)(PEN)matrix as a filler to obtain PEN composite film(PEN/BT-CN).The surface functionalization of BT was characterized and confirmed by Fourier transform infrared spectroscopy(FTIR),X-ray photoelectron spectroscopy(XPS),thermogravimetric analysis(TGA).In addition,the results show that the BT-CN can effectively enhance the thermal,mechanical and dielectric properties of PEN composite films.Comparing with pure PEN,the glass transition temperature of PEN/BT-CN increases by 12℃,the tensile strength increases by 9.6%,and the dielectric constant increases by 227.8%at 1 kHz.In summary,cyano-based functionalization is beneficial to improve the compatibility of organic-inorganic interface,thereby further improving the comprehensive performance of composite films.

关 键 词：聚芳醚腈 复合材料 介电性能 钛酸钡 

分 类 号：TQ326.9[化学工程—合成树脂塑料工业]