Page 78 - 精细化工2019年第12期

第 36 卷第 12 期 精 细 化 工 Vol.36, No.12
2019 年 12 月 FINE CHEMICALS Dec. 2019

功能材料
一类高透明含氟共聚型聚酰亚胺的合成与表征

*
余 彬，蒋彩荣，汪称意 ，赵晓燕，李 坚，任 强
（常州大学 材料科学与工程学院, 常州 213164）

摘要：以 2,2′-双（三氟甲基）-4,4′-二氨基联苯（TFMB）、4,4-二氨基二苯醚（ODA）和 3, 3′,4,4′-二苯醚四甲酸
二酐（ODPA）为原料，间甲酚为溶剂，按不同的配比，采用一步法制备了一系列低成本含氟共聚型聚酰亚胺
CPI-1~CPI-4，进一步制备成膜。通过红外光谱仪、核磁共振波谱仪对该系列含氟聚酰亚胺的结构进行了表征确
认。采用 UV 光度计、TGA、DSC、拉伸性能试验机对其溶解性能、光学性能、热性能、机械性能进行了测试。
结果表明，该系列含氟聚酰亚胺室温下能溶于二甲基亚砜（DMSO）、N,N-二甲基乙酰胺（DMAc）、三氯甲烷
（CHCl 3 ）等有机溶剂，具有较好的溶解性和成膜性。所制薄膜具有优良的光学透明性，在紫外光波长 400 nm
时的透光率均在 70%以上。CPI-1~CPI-4 的起始分解温度均大于 500 ℃，N 2 氛围下 800 ℃的质量残留百分数均
在 52%以上，玻璃化转变温度在 166~170 ℃。此外，CPI-1~CPI-4 薄膜的拉伸强度在 89.8~105.3 MPa，弹性模
量在 1.3~1.7 GPa，断裂伸长率在 9.7%~18.4%，表现出较好的机械性能。
关键词：聚酰亚胺；透光率；含氟基团；功能材料
中图分类号：TQ630 文献标识码：A 文章编号：1003-5214 (2019) 12-2406-06

Synthesis and Characterization of Highly Transparent
Fluorine-containing Copolymer Polyimide

*
YU Bin, JIANG Cai-rong, WANG Chen-yi , ZHAO Xiao-yan, Li Jian, Ren Qiang
(School of Materials Science and Engineering, Changzhou University, Changzhou 213164, Jiangsu, China)

Abstract: A series of low-cost fluorine-containing co-polyimides CPI-1~CPI-4 were prepared by one-step
method using 2,2′-bis(trifluoromethyl)benzidine (TFMB),4,4′-oxydianiline (ODA) and 3,3′,4,4′-diphenyl
ether tetracarboxylic acid dianhydride (ODPA) as monomers and m-cresol as solvent. These co-polyimides
were characterized by infrared and nuclear magnetic resonance spectroscopy. The solubility, optical,
thermal and mechanical properties of the co-polyimides were tested by organic solvents, UV photometer,
TGA, DSC and tensile tester. The results show that these fluorine-containing co-polyimides can be
dissolved in organic solvents such as dimethyl sulfoxide (DMSO), N,N-dimethylacetamide (DMAc) and
trichloromethane (CHCl 3) at room temperature, and have good solubility and film forming properties. The
prepared films have excellent optical transparency with light transmittance at a wavelength of ultraviolet
light of 400 nm more than 70%. The fluorine-containing co-polyimides also have excellent thermal stability,
the initial decomposition temperatures of CPI-1~CPI-4 are more than 500 ℃, the mass residual percentages
at 800 ℃ in N 2 atmosphere are above 52%, and the glass transition temperatures are in the range of
166~170 ℃. In addition, the co-polyimide films have tensile strengths of 89.8~105.3 MPa, elastic modulus
between 1.3~1.7 GPa, and elongation at break in the range of 9.7% to 18.4%, showing good mechanical
properties.
Key words: polyimide; light transmittance; fluorine-containing group; functional materials

收稿日期：2019-04-03; 定用日期：2019-05-17; DOI: 10.13550/j.jxhg.20190272
基金项目：国家自然科学基金（21404016）；江苏省重点研发计划（BE2017645）；江苏省研究生实践创新计划（SJCX18-0954）
作者简介：余 彬（1993—），男，硕士生，E-mail：1062545259@qq.com。联系人：汪称意（1981—），男，副教授，E-mail：
wangcy@cczu.edu.cn。