高等学校化学学报 ›› 2022, Vol. 43 ›› Issue (2): 20210604.doi: 10.7503/cjcu20210604

• 高分子化学 • 上一篇    下一篇

羧基化含氟聚芳醚的合成及涂层性能

张文梦, 李梦琴, 侯震, 陈栋阳()   

  1. 福州大学材料科学与工程学院, 福州 350116
  • 收稿日期:2021-08-19 出版日期:2022-02-10 发布日期:2021-11-10
  • 通讯作者: 陈栋阳 E-mail:dongyang.chen@fzu.edu.cn
  • 基金资助:
    国家自然科学基金(51873037);福建省自然科学基金(2020J01475)

Synthesis and Coating Properties of Carboxylated Fluorinated Poly(arylene ether)s

ZHANG Wenmeng, LI Mengqin, HOU Zhen, CHEN Dongyang()   

  1. College of Materials Science and Engineering,Fuzhou University,Fuzhou 350116,China
  • Received:2021-08-19 Online:2022-02-10 Published:2021-11-10
  • Contact: CHEN Dongyang E-mail:dongyang.chen@fzu.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(51873037);the Natural Science Foundation of Fujian Province, China(2020J01475)

摘要:

以四烯丙基联苯二酚(TABP)、 双酚A和十氟联苯为原料, 通过室温缩聚制得含氟聚芳醚(FPAEs), 再将其与3-巯基丙酸进行加成, 制得羧基化含氟聚芳醚(CFPAEs). 通过改变TABP的投料量来调节产物的羧基含量. 以N-甲基吡咯烷酮(NMP)为溶剂, 将CFPAE涂层喷涂在马口铁上. 研究发现, CFPAE涂层具有优异的热稳定性和机械强度, 羧基的引入可显著提高含氟聚芳醚涂层的附着力. 当羧基含量为0.265 mmol/g时, 涂层的黏附力等级为0级, 铅笔硬度为6H, 不引起涂层破坏的最小轴棒直径为0.5 mm, 水接触角为103.9°. 此外, CFPAE涂层还具有优异的耐酸、 耐盐、 抗紫外老化和防腐蚀等性能. 研究结果表明, 羧基化是拓展含氟聚芳醚在特种氟碳涂料上应用的一种有效途径.

关键词: 氟碳涂料, 含氟聚芳醚, 羧基化, 喷涂, 附着力

Abstract:

In order to improve the adhesion of aromatic fluorocarbon coatings, tetraallyl biphenyl diphenol(TABP), bisphenol A and decafluorobiphenyl were used as starting materials to prepare fluorinated poly(arylene ether)s(FPAEs) through room temperature polycondensation. After that, 3-mercaptopropionic acid was grafted to achieve carboxylated fluorinated poly(arylene ether)s(CFPAEs). The carboxyl content of the products was adjusted by changing the loading amount of TABP. The CFPAE coatings were prepared by spraying the polymer solutions in 1-methyl-2-pyrrolidinone(NMP) onto tinplate. It has been found that the CFPAE coatings have excellent thermal stability and mechanical strength. The introduction of carboxyl groups could significantly improve the adhesion of the fluorocarbon coating. When the carboxyl content is 0.265 mmol/g, the adhesion level of the coating is 0, the pencil hardness is 6H, the minimum shaft rod diameter without coating damage is 0.5 mm, and the water contact angle is 103.9°. In addition, the CFPAE coatings also have excellent acid resistance, salt resistance, anti-ultraviolet aging and anti-corrosion properties. Therefore, the carboxylation is an effective way to expand the application of fluorinated poly(arylene ether)s to aromatic fluorocarbon coatings.

Key words: Fluorocarbon coating, Fluorinated poly(arylene ether)s, Carboxylation, Spraying, Adhesion force

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