山东科学 ›› 2022, Vol. 35 ›› Issue (5): 53-60.doi: 10.3976/j.issn.1002-4026.2022.05.007

• 新材料 • 上一篇    下一篇

含有生物质纤维的聚酰亚胺薄膜的制备及性能测试

赵新富1(), 曹格格2, 伊希斌1, 赵冠伟2, 聂义昊1, 郭艳俊2, 房长龙2   

  1. 1.齐鲁工业大学(山东省科学院) 新材料研究所 山东省特种含硅新材料重点实验室,山东 济南 250014
    2.齐鲁工业大学(山东省科学院) 化学与化工学院,山东 济南 250353
  • 收稿日期:2022-03-08 出版日期:2022-10-20 发布日期:2022-10-10
  • 作者简介:赵新富(1987—),女,助理研究员,研究方向为有机气凝胶功能材料。E-mail: zhaoxinfu@sdas.org
  • 基金资助:
    山东省自然科学基金(ZR2019BEM015)

Synthesis and property of polyimide films coupling with biomass fibers

ZHAO Xin-fu1(), CAO Ge-ge2, YI Xi-bin1, ZHAO Guan-wei2, NIE Yi-hao1, GUO Yan-jun2, FANG Chang-long2   

  1. 1. Shandong Provincial Key Laboratory of Special Silicone-Containing Materials, Advanced Materials Institute, Qilu University of Technology(Shandong Academy of Sciences), Jinan 250014, China
    2. College of Chemistry and Chemical Engineering, Qilu University of Technology(Shandong Academy of Sciences), Jinan 250353, China
  • Received:2022-03-08 Online:2022-10-20 Published:2022-10-10

摘要:

聚酰亚胺(polyimides,PI)是以二酐或二胺合成的耐高温聚合物,因其耐高温性能强成为使用温度最高的工业化聚合物材料之一。针对目前PI薄膜在强度方面存在的断裂延伸率低、拉伸强度低等问题,通过调节聚合物的质量浓度、比例、加料方式、加入生物质纤维等方式制得了不同强度的聚酰亚胺薄膜。以4,4-二氨基二苯醚和3,3,4,4-联苯四甲酸二酐作为反应的前驱体,在交联剂的存在下,采用正加料法制备聚酰胺酸(polymer polyacrylic acid, PAA),将制备好的PAA放置在表面铺有均匀藕丝的培养皿中,加热使其亚胺化,制得聚酰亚胺薄膜。结果表明含有藕丝的聚酰亚胺薄膜的断后标距和弹性模量均低于未掺杂藕丝的薄膜,其中PI-2%藕丝断裂延伸率为6.49%,抗拉强度达67.33 MPa,最大力数据为57.47 N,远高于未掺杂藕丝薄膜力学数据。研究表明藕丝纤维的加入在一定程度上增强了薄膜的力学性能。

关键词: 聚酰亚胺薄膜, 生物聚合物纤维, 拉伸性能测试, 藕丝

Abstract:

Polyimide (PI), a type of high temperature-resistant polymer synthesized using dianhydride or diamine, has become one of the most industrialized polymer materials with the highest operating temperature owing to its strong high-temperature resistance property. However, the strength of PI films still needs to be improved for their industrial application. To improve the elongation rate and tensile strength of PI films, different methods, such as adjusting the concentration, ratio, addition method of precursors and the addition amount of biomass fibers, have been tested in our experiments.4,4-Diaminodiphenyl ether and 3,3,4,4-biphenyltetracarboxylic acid dianhydride were used as the precursors for the reaction. Polyamide acid was prepared using the positive addition method in the presence of a cross linker, which was then poured into a Petri dish containing uniform lotus root fiber. The PI film was obtained by calcination. The results showed that the final gage length and elastic modulus of the PI films containing lotus root fiber were lower than those of the pure PI film. Furthermore, PI-2% root-fiber film had a tensile elongation at break of 6.49%, a tensile strength of 67.33 MPa, and a maximum force tolerance.of 57.47 N, which are much higher than those of pure PI film. Thus, the addition of lotus root fiber enhances the mechanical properties of the film.

Key words: polyimide film, biopolymer fiber, tensile property, lotus root fiber

中图分类号: 

  • TQ204

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