一种新型耐热可溶聚酰亚胺的制备及性质

张恒; 邵磊山; 龚世铭; 龚庆; 汪映寒

doi:10.3788/YJYXS20163103.0258

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一种新型耐热可溶聚酰亚胺的制备及性质

材料与器件 | 更新时间：2020-08-12

- 一种新型耐热可溶聚酰亚胺的制备及性质
- Synthesis and properties of novel heat-resistant, soluble polyimide
- 液晶与显示 2016年31卷第3期页码：258-264
- 作者机构：
  
  四川大学高分子科学与工程学院高分子材料与工程国家重点实验室,四川成都,610065
- 作者简介：
- 基金信息：
  
  国家自然科学基金(No.51173115)();博士点基金(No.20110181110030)()
- DOI：10.3788/YJYXS20163103.0258
  中图分类号： O633.4
- 收稿日期：2015-11-18，
  
  修回日期：2015-11-29，
  
  纸质出版日期：2016-03-05
- 稿件说明：
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张恒, 邵磊山, 龚世铭等. 一种新型耐热可溶聚酰亚胺的制备及性质[J]. 液晶与显示, 2016,31(3): 258-264

ZHANG Heng, SHAO Lei-shan, GONG Shi-ming etc. Synthesis and properties of novel heat-resistant, soluble polyimide[J]. , 2016,31(3): 258-264
张恒, 邵磊山, 龚世铭等. 一种新型耐热可溶聚酰亚胺的制备及性质[J]. 液晶与显示, 2016,31(3): 258-264 DOI： 10.3788/YJYXS20163103.0258.

ZHANG Heng, SHAO Lei-shan, GONG Shi-ming etc. Synthesis and properties of novel heat-resistant, soluble polyimide[J]. , 2016,31(3): 258-264 DOI： 10.3788/YJYXS20163103.0258.

摘要

成功合成带有三苯胺和吡喃环结构的新型功能性二胺4-[(2-二氢吡喃)氧]-4'

4"-二氨基三苯胺 (THP)。使用此单体与4

4'-二氨基二苯醚 (ODA) 和4

4'-(六氟异丙烯)二酞酸酐 (6FDA) 共聚

利用两步化学酰胺化法

制备了共聚物的组成配比不同的3种聚酰亚胺 (PI)。使用NMR、FT-IR、DSC、UV-Vis等测试手段对单体和PI进行了结构表征和各项性能测试。研究了其溶解性能、耐热性能、透光性能和取向性能。结果表明3种PI均可溶于NMP、DMF等极性溶剂

同时在THF、DCM等低沸点溶剂中也具有较好的溶解性。 PI的玻璃化转变温度在270℃以上

在500~800 nm区域透过率在80%以上

液晶分子的预倾角随THP的增加而增大

可达2.3

且具有均一的取向效果。

Abstract

The diamine 4-(((tetrahydro-2H-pyran-2-yl)oxy)methyl)-4'

4-diaminotriphenylamine (THP) containing triphenylamine group and pyran ring was successfully prepared. A series of polyimides (PIs) were synthesized with the copolymerization of THP

4'-Oxydianiline (ODA)

4'-(hexafluoroisopropylidene)diphthalic anhydride (6FDA) by chemical imidization. The structures and properties of the PIs were characterized by NMR

FT-IR

DSC

and UV-Vis etc. It was found that all PIs were soluble in polar solvents

such as N-methylpyrrolidone (NMP) and N

N-dimethylformamide (DMF) and even soluble in some common organic solvent with low boiling point such as Tetrahydrofuran (THF) and Trichloromethane (DCM). The glass transition temperature (

) of the PIs was above 270℃

and their transmittance in 500~800 nm wavelengths was more than 80%. It can be observed under POM that the liquid crystal could be aligned uniformly and a pretilt angle of about 2.3 can be obtained by using the PI films as liquid crystal alignment layer.

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references

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