Synthesis and Properties of Heat-resistant Polyimides Films Containing Crosslinkable Group-tetrafluorostyrene

IF 4 2区化学 Q2 POLYMER SCIENCE

Chinese Journal of Polymer Science Pub Date : 2025-04-03 DOI:10.1007/s10118-025-3292-z

Tian-Yong Zhang, Jia-Ning Yu, Sui-Sui Wang, Ya-Mei Chai, Shuang Jiang, Hong-Li An, Ruo-Xi Sun, Bin Li

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引用次数: 0

Abstract

Polyimide (PI) is widely used in high-tech fields such as microelectronics, aerospace, and national defense because of its excellent optical properties, high- and low-temperature resistance, and good dimensional stability. To achieve the desired properties of PI, the monomers 2,6-diaminopyrimidin-4-ol (DAPD) and 6-(2,3,5,6-tetrafluoro-4-vinylphenoxy) pyrimidin-2,4-diamine (DAFPD), which contains crosslinkable functional groups, were designed and synthesized successfully and copolymerized with 4,4′-oxydianiline (ODA) and 4,4-hexafluoroisopropylphthalic anhydride (6FDA). The prepared PI film (PI-3), with rigid backbones and loose packing had excellent heat resistance (T_d5%=489 °C) and optical properties (T₄₅₀=82%). Furthermore, a crosslinked PI film (c-PI-3) with more heat-resistant (T_d5%=524 °C) and better mechanical properties (σ=125.46 MPa), can be obtained through thermal crosslinking of tetrafluorostyrene. In addition, the changes in the properties caused by the proportion of DAFPD added during copolymerization are discussed comprehensively. This study provides a promising candidate for heat-resistant PI materials.

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含交联基-四氟苯乙烯耐热聚酰亚胺薄膜的合成及性能研究

聚酰亚胺（PI）以其优异的光学性能、耐高低温性能和良好的尺寸稳定性，广泛应用于微电子、航空航天、国防等高科技领域。为了获得理想的PI性能，设计并成功合成了含有交联官能团的单体2,6-二氨基嘧啶-4-醇（DAPD）和6-（2,3,5,6-四氟-4-乙烯基苯氧基）嘧啶-2,4-二胺（DAFPD），并与4,4 ' -氧二胺（ODA）和4,4-六氟异丙基邻苯酐（6FDA）共聚。所制备的PI-3薄膜具有刚性骨架和松散填料，具有优异的耐热性（Td5%=489℃）和光学性能（T450=82%）。通过对四氟苯乙烯进行热交联，可以得到耐热性更高（Td5%=524℃）、力学性能更好（σ=125.46 MPa）的交联PI膜（C -PI-3）。此外，还全面讨论了共聚过程中DAFPD添加比例对性能的影响。该研究为耐热PI材料提供了一个有前途的候选材料。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Chinese Journal of Polymer Science 化学-高分子科学

CiteScore

7.10

自引率

11.60%

发文量

218

审稿时长

6.0 months

期刊介绍： Chinese Journal of Polymer Science (CJPS) is a monthly journal published in English and sponsored by the Chinese Chemical Society and the Institute of Chemistry, Chinese Academy of Sciences. CJPS is edited by a distinguished Editorial Board headed by Professor Qi-Feng Zhou and supported by an International Advisory Board in which many famous active polymer scientists all over the world are included. The journal was first published in 1983 under the title Polymer Communications and has the current name since 1985. CJPS is a peer-reviewed journal dedicated to the timely publication of original research ideas and results in the field of polymer science. The issues may carry regular papers, rapid communications and notes as well as feature articles. As a leading polymer journal in China published in English, CJPS reflects the new achievements obtained in various laboratories of China, CJPS also includes papers submitted by scientists of different countries and regions outside of China, reflecting the international nature of the journal.