Preparation of Colorless Transparent Polyimide Films with High Comprehensive Properties

Xin Feng; Yu-hui Wang; Yu-xiao Zhao; Xiao-liang Yu; Pei-bin Zhang; Jing Cui; Min-jie Guo

doi:10.11777/j.issn1000-3304.2022.22408

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Preparation of Colorless Transparent Polyimide Films with High Comprehensive Properties

Research Article | 更新时间：2023-09-25

- Preparation of Colorless Transparent Polyimide Films with High Comprehensive Properties
- ACTA POLYMERICA SINICA Vol. 54, Issue 8, Pages: 1219-1228(2023)
- 作者机构：
  
  1.天津科技大学化工与材料学院天津 300457
  2.中国石油化工集团有限公司上海石油化工研究院上海 201208
  3.天津科技大学生物源纤维制造技术国家重点实验室天津 300457
- 作者简介：
  
  Min-jie Guo, E-mail: guomj@tust.edu.cn
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2022.22408
  CLC：
- Published：20 August 2023，
  
  Published Online：26 May 2023，
  
  Received：28 February 2023，
  
  Accepted：04 April 2023
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冯鑫,王玉辉,赵宇霄等.高综合性能无色透明聚酰亚胺薄膜的制备[J].高分子学报,2023,54(08):1219-1228.

Feng Xin,Wang Yu-hui,Zhao Yu-xiao,et al.Preparation of Colorless Transparent Polyimide Films with High Comprehensive Properties[J].ACTA POLYMERICA SINICA,2023,54(08):1219-1228.
冯鑫,王玉辉,赵宇霄等.高综合性能无色透明聚酰亚胺薄膜的制备[J].高分子学报,2023,54(08):1219-1228. DOI： 10.11777/j.issn1000-3304.2022.22408.

Feng Xin,Wang Yu-hui,Zhao Yu-xiao,et al.Preparation of Colorless Transparent Polyimide Films with High Comprehensive Properties[J].ACTA POLYMERICA SINICA,2023,54(08):1219-1228. DOI： 10.11777/j.issn1000-3304.2022.22408.

摘要

以2

2'-双(三氟甲氧基)联苯-4

4'-二胺(TFMOB)/2

2'-双(三氟甲基)联苯-4

4'-二胺(TFMB)为二胺单体，分别与六氟异丙基邻苯二甲酸酐(6FDA)和4

4'-(4

4'-异丙基二苯氧基)双(邻苯二甲酸酐) (BPADA)2种二酐单体聚合，制备了含三氟甲氧基(―‍OCF

)的新型无色透明聚酰亚胺(CPI)薄膜. 实验结果表明：―‍OCF

的引入明显提高了CPI薄膜的综合性能，TFMOB与TFMB的摩尔比为3:7时，在400~760 nm可见光波长范围内，透光率大于85%；5%质量损失对应的热分解温度(N

氛围)在530 ℃以上；10 GHz频率下的介电常数为2.647，介电损耗为0.00525；拉伸强度达(111.2±1.1) MPa，断裂伸长率为(67.0±5.0)%，吸湿率最低可达0.29%. 证明含―‍OCF

基团的TFMOB单体为高综合性能CPI薄膜的制备提供了可能，在柔性光学材料方面具有良好的应用前景.

Abstract

2'-Double(trifluoro methoxy) biphenyl-4

4'-diamine (TFMOB)/2

2'-double (three fluorinated methyl) biphenyl-4

4'-diamine (TFMB) were used as diamine monomers to synthesize poly(amide acid) precursors by co-polymerizing with two dianhydride monomers

hexafluoroisopropyl phthalic anhydride (6FDA) and 4

4'-(4

4'- isopropyldiphenoxy) bis(phthalic anhydride) (BPADA)

respectively. A series of colorless transparent polyimide (CPI) films containing trifluoromethoxy (―OCF

) are obtained by thermal imidization of PAA under a certain temperature gradient. In this paper

the effects of different contents of ―OCF

on the properties of CPI films prepared by polymerization with two different dianhydrides were investigated. The results showed that when the ratio of TFMOB to TFMB was 3:7

the properties of the prepared CPI films reach a relative balance

in the visible wavelength range of 400-760 nm

it has excellent optical transparency

transmittance of more than 80%

the 5% and 10% weight loss temperature is 532 ℃ and 550 ℃ respectively

and the residual mass percentage is higher than 50% at 800 ℃; the dielectric constant at 10 GHz is 2.647

the dielectric loss is only 0.00525; the tensile strength reaches (111.2±1.1) MPa

the elongation at break is (67.0±5.0)%; the moisture absorption is as low as 0.29%. It was proved that the introduction of ―OCF

significantly improves the comprehensive performance of CPI film

which provides a foundation for the application of CPI film in the field of flexible photoelectric materials.

关键词

聚酰亚胺无色透明薄膜高综合性能22'-双(三氟甲氧基)联苯-44'-二胺

Keywords

PolyimideColorless transparent filmExcellent comprehensive performance22'-Bis(trifluoromethoxy) biphenyl-44'-diamine

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