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材料工程  2019, Vol. 47 Issue (5): 153-158    DOI: 10.11868/j.issn.1001-4381.2017.000830
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
共聚低热膨胀聚酰亚胺薄膜的制备与表征
张明艳1,2, 高升1, 吴子剑1,2, 崔宏玉1, 高岩1
1. 哈尔滨理工大学 材料科学与工程学院, 哈尔滨 150040;
2. 哈尔滨理工大学 工程电介质及其应用技术教育部重点实验室, 哈尔滨 150080
Preparation and characterization of low expansion transparent copolyimide films
ZHANG Ming-yan1,2, GAO Sheng1, WU Zi-jian1,2, CUI Hong-yu1, GAO Yan1
1. School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150040, China;
2. Engineering Dielectrics and Its Application Key Laboratory(Ministry of Education), Harbin University of Science and Technology, Harbin 150080, China
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摘要 以4,4'-(六氟异丙烯)二酞酸酐(6FDA)为含氟二酐,4,4'-二氨基-2,2'-双三氟甲基联苯(TFMB)为含氟二胺,通过引入分子结构相对对称的刚性单体1,2,4,5-均苯四甲酸二酐(PMDA)进行共聚合成了5种含氟比例不同的透明聚酰亚胺薄膜,并对其性能进行了表征。分析表明:引入刚性单体共聚后薄膜的热稳定性和耐热性有所提高;薄膜的介电常数随着PMDA含量的上升而增加;共聚薄膜在可见光领域的透光率低于均聚薄膜;拉伸实验显示在添加少量PMDA后,薄膜的拉伸强度和弹性模量有所增大,但当PMDA含量过高时其力学性能反而下降;随着PMDA含量的增加,薄膜的热膨胀系数明显降低。
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张明艳
高升
吴子剑
崔宏玉
高岩
关键词 聚酰亚胺薄膜透明含氟共聚热膨胀系数    
Abstract:Five transparent polyimide thin films with different proportions of 1,2,4,5-,pyromellitic dianhydride (PMDA) were made by copolymerization of 4,4'-(six fluoro isopropenyl) two phthalic anhydride (6FDA), 4,4'-two amino -2,2'-double three trifluoromethyl biphenyl (TFMB) and PMDA, and their properties were characterized. The results show that thermal stability and heat resistance are increased after the introduction of rigid monomers; the dielectric constant of the films is increased with the increase of PMDA content; homopolymer film has higher light transmission rate than copolymer films in visible light; tensile test shows that adding a small amount of PMDA, the tensile strength and elastic modulus of the film are increased, but when the content of PMDA is higher than 40%, the mechanical properties are decreased; the coefficient of thermal expansion of the films are decreased obviously while PMDA content is increased.
Key wordspolyimide film    transparent    fluorine containing    copolymerization    coefficient of thermal expansion
收稿日期: 2017-06-27      出版日期: 2019-05-17
中图分类号:  TQ317.3  
通讯作者: 吴子剑(1983-),男,讲师,博士,研究方向:树脂基复合材料,联系地址:哈尔滨市香坊区林园路4号哈尔滨理工大学南区(150040),E-mail:zijian.wu@hrbust.edu.com     E-mail: zijian.wu@hrbust.edu.com
引用本文:   
张明艳, 高升, 吴子剑, 崔宏玉, 高岩. 共聚低热膨胀聚酰亚胺薄膜的制备与表征[J]. 材料工程, 2019, 47(5): 153-158.
ZHANG Ming-yan, GAO Sheng, WU Zi-jian, CUI Hong-yu, GAO Yan. Preparation and characterization of low expansion transparent copolyimide films. Journal of Materials Engineering, 2019, 47(5): 153-158.
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