含氟共聚型聚芳醚腈的合成及性能研究  

Synthesis and properties of fluorine-containing copolymerized polyarylene ether nitrile

作　　者：何玉虹 刘彩召[1] 孙明明[1] 张绪刚[1] 张斌[1] He Yuhong;Liu Caizhao;Sun Mingming;Zhang Xugang;Zhang Bin(Institute of Petrochemistry,Heilongjiang Academy of Sciences,Harbin 150040,Heilongjiang,China)

机构地区：[1]黑龙江省科学院石油化学研究院,黑龙江哈尔滨150040

出　　处：《中国胶粘剂》2023年第4期17-21,34,共6页China Adhesives

基　　金：黑龙江省省属科研院所科研业务费项目(CZKYF2023-1-C034)。

摘　　要：通过改变含氟单体双酚AF(BPAF)与酚酞(PP)的物质的量之比,在碱催化条件下与2,6-二氯苯甲腈缩聚,合成了一系列不同氟含量的共聚型聚芳醚腈(FPEN)。对FPEN共聚物的分子结构、分子量及其分布、热性能、力学性能和介电性能进行了表征。研究结果表明:FPEN共聚物具有良好的溶解性,能溶解于二甲基乙酰胺(DMAc)、N,N-二甲基甲酰胺(DMF)等多种有机溶剂;FPEN的热学性能随氟含量出现规律性变化,其Tg均高于200℃,T5%也都超过了470℃;当含氟单体加入量为30%,即n(PP)∶n(BPAF)=7∶3时,FPEN薄膜的拉伸强度和断裂伸长率分别为82.8 MPa和3.47%,同时具有良好的介电性能。本研究制备的FPEN是一类综合性能优异的新型特种高分子材料,在树脂基复合材料和胶粘剂改性方面有较大的应用前景。By changing the molar ratio of fluorinated monomer bisphenol AF(BPAF)and phenolphthalein(PP),and then condensing with 2,6-dichlorobenzonitrile under alkaline catalytic conditions,a series of copolymerized polyarylene ether nitrile(FPEN)with different fluorine contents were synthesized.The molecular structure,molecular weight and its distribution,thermal properties,mechanical properties and dielectric properties of FPEN copolymer were characterized.The research results showed that FPEN copolymer had good solubility and could be dissolved in various organic solvents such as dimethylacetamide(DMAc),N,Ndimethylformamide(DMF),etc.The thermal properties of FPEN exhibited regular changes with fluorine content,with Tg higher than 200℃and T5%higher than 470℃.When the content of fluorinated monomer was 30%,i.e.n(PP)∶n(BPAF)=7∶3,the tensile strength and elongation at break of FPEN film were 82.8 MPa and 3.47%respectively,while also exhibiting good dielectric properties.The FPEN prepared in this study was a new type of special polymer material with excellent comprehensive performance,which had great application prospects in resinbased composite materials and adhesive modification.

关 键 词：酚酞 聚芳醚腈 共聚改性 机械性能 

分 类 号：TQ326[化学工程—合成树脂塑料工业]