含苯胺三聚体结构单元聚醚酰亚胺的合成及其性能研究

刘坤; 张育林; 马玉婷; 乔文强; 王植源

doi:10.11777/j.issn1000-3304.2023.23080

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含苯胺三聚体结构单元聚醚酰亚胺的合成及其性能研究

研究论文 | 更新时间：2023-11-03

- 含苯胺三聚体结构单元聚醚酰亚胺的合成及其性能研究
- Synthesis and Properties of Polyetherimide Containing Aniline Trimer Structural Units
- 高分子学报 2023年54卷第11期页码：1720-1728
- 作者机构：
  
  大连理工大学高分子材料系大连 116024
- 作者简介：
  
  E-mail: wqqiao@dlut.edu.cn
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2023.23080
  中图分类号：
- 纸质出版日期：2023-11-20，
  
  网络出版日期：2023-06-15，
  
  收稿日期：2023-03-28，
  
  录用日期：2023-05-11
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刘坤,张育林,马玉婷等.含苯胺三聚体结构单元聚醚酰亚胺的合成及其性能研究[J].高分子学报,2023,54(11):1720-1728.

Liu Kun,Zhang Yu-lin,Ma Yu-ting,et al.Synthesis and Properties of Polyetherimide Containing Aniline Trimer Structural Units[J].Acta Polymerica Sinica,2023,54(11):1720-1728.
刘坤,张育林,马玉婷等.含苯胺三聚体结构单元聚醚酰亚胺的合成及其性能研究[J].高分子学报,2023,54(11):1720-1728. DOI： 10.11777/j.issn1000-3304.2023.23080.

Liu Kun,Zhang Yu-lin,Ma Yu-ting,et al.Synthesis and Properties of Polyetherimide Containing Aniline Trimer Structural Units[J].Acta Polymerica Sinica,2023,54(11):1720-1728. DOI： 10.11777/j.issn1000-3304.2023.23080.

摘要

以氨基封端苯胺三聚体(TA)、双酚A型二醚二酐、4

4'-二氨基二苯醚为原料，改变投料比制备出TA结构单元含量不同的聚醚酰亚胺(PEI-TA

). 为分析将电活性的苯胺三聚体引入到PEI结构中对材料性能的影响，制备出TA含量不同的PEI/TA

共混材料. 采用傅里叶变换红外光谱(FTIR)、紫外-可见光吸收光谱(UV-Vis)、核磁共振氢谱(

H-NMR)、热重分析(TGA)、示差扫描量热(DSC)、动态力学分析(DMA)等研究了所制备PEI-TA

的结构、热稳定性、玻璃化转变温度及动态力学性能. 采用表面/体积电阻率分析仪对比分析了十二烷基苯磺酸掺杂的共聚体系和共混体系的表面电阻率和体积电阻率. 研究发现，合成的PEI-TA

的5%热失重温度为417~513 ℃，DMA测得的玻璃化转变温度为237~240 ℃，具有优异的热稳定性；共聚物薄膜的杨氏模量和断裂伸长率分别在1.5~2.3 GPa和3.9%~5.7%范围内，具有良好的机械性能；10 GHz下的介电常数和介电损耗分别在2.7~3.5和0.0068~0.0127范围内，具有良好的介电性能；共聚体系薄膜的表面和体积电阻率均在10

~10

量级，比分子结构中不含TA结构单元的聚合物降低了7~9个数量级，而共混体系的表面和体积电阻率仅降低了1~2个数量级. 研究结果表明，将电活性的TA引入到PEI的分子结构中，可以获得一类性能优异且电阻率可调的聚醚酰亚胺材料.

Abstract

A series of polyetherimides (PEI-TA

) with different contents of TA structural units were prepared from amino-terminated aniline trimer (TA)

bisphenol A type diethyl dianhydride and 4

4'-diaminodiphenyl ether by changing the feed ratio. In order to analyze the effect of introducing electroactive aniline trimer into PEI on material properties

PEI/TA

blends with different TA contents were prepared. The structure

thermal stability

glass transition temperature and dynamic mechanical properties of PEI-TA

were studied by Fourier transform infrared spectroscopy (FTIR)

ultraviolet-visible spectroscopy (UV-Vis)

H nuclear magnetic resonance (

H-NMR)

thermo-gravimetric analysis (TGA)

differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA). The surface and volume resistivity of the copolymers and blends doped with dodecylbenzene sulfonic acid were compared and analyzed by using a surface/volume resistivity analyzer. It is found that the 5% thermal weight loss temperatures of the PEI-TA

are in the range of 417‒513 ℃

and the glass transition temperatures measured by DMA are about 237‒240 ℃

which imply that PEI-TA

have excellent thermal stability; The Young's modulus and elongation at break of the PEI-TA

films are in the range of 1.5‒2.3 GPa and 3.9%‒5.7% respectively. The dielectric constant and dielectric loss at 10 GHz are in the range of 2.7‒3.5 and 0.007‒0.013 respectively. The surface and volume resistivity of the PEI-TA

copolymer films are in the order of 10

‒10

which is 7‒9 orders of magnitude lower than that of the PEI without TA structural unit

while the surface and volume resistivity of the PEI/TA

blend films is only 1‒2 orders of magnitude lower. The results show that polyetherimides with excellent performance and adjustable resistivity can be obtained by introducing electroactive TA units into the molecular structure of PEI.

关键词

聚醚酰亚胺苯胺三聚体结构-性能表面电阻率

Keywords

PolyetherimideAniline trimerStructure-performanceSurface resistance

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