中国塑料 ›› 2022, Vol. 36 ›› Issue (5): 24-28.DOI: 10.19491/j.issn.1001-9278.2022.05.005

• 材料与性能 • 上一篇    下一篇

聚酰胺6/双向经编玻璃纤维复合材料的制备及其界面改性研究

陈胜1, 梁颖超1, 吴方娟1(), 方辉1, 范新凤1, 陈晖2, 王永刚3   

  1. 1.福建工程学院材料科学与工程学院,福州 350118
    2.福州大学机械工程及自动化学院,福州 350108
    3.飞荣达科技(江苏)有限公司,江苏 常州 213200
  • 收稿日期:2021-12-27 出版日期:2022-05-26 发布日期:2022-05-26
  • 通讯作者: 吴方娟(1984—),女,副教授,从事高分子复合材料研究,fjwugfz@163.com
    E-mail:fjwugfz@163.com
  • 基金资助:
    大学生创新创业训练计划项目(202110388007);中央引导地方科技发展专项(2021L3015)

Preparation and interfacial modification of polyamide 6/bidirectional warp⁃knitted glass fiber composites

CHEN Sheng1, LIANG Yingchao1, WU Fangjuan1(), FANG Hui1, FAN Xinfeng1, CHEN Hui2, WANG Yonggang3   

  1. 1.College of Materials Science and Engineering,Fujian University of Technology,Fuzhou 350118
    2.School of Machine Engineering and Automation,Fuzhou University,Fuzhou 350108
    3.Jiangsu FRD Science & Technology Co,Ltd,Changzhou 213200
  • Received:2021-12-27 Online:2022-05-26 Published:2022-05-26
  • Contact: WU Fangjuan E-mail:fjwugfz@163.com

摘要:

采用3?氨丙基三乙氧基硅烷(KH550)和甲苯二异氰酸酯(TDI)对双向经编玻璃纤维(BWKGF)进行表面改性处理,制备KH550改性BWKGF(k?BWKGF)和TDI改性BWKGF(t?BWKGF),并采用热塑性树脂传递模塑成型(T?RTM)工艺制备了聚酰胺6(PA6)/BWKGF、PA6/k?BWKGF和PA6/t?BWKGF复合材料;通过红外光谱仪(FTIR)、场发射扫描电子显微镜(FESEM)和万能试验机对改性前后BWKGF结构、复合材料的微观形貌及力学性能进行了表征。结果表明,k?BWKGF和t?BWKGF表面接枝了活性基团;改性处理增大了BWKGF表面的粗糙度,改善了其和PA6间的界面结合效果;改性处理提升了复合材料的力学性能,PA6/t?BWKGF和PA6/k?BWKGF的拉伸强度分别达到了130 MPa和140 MPa,比PA6/BWKGF分别提高了44.5 %和55.5 %。

关键词: 玻璃纤维, 聚酰胺6, 阴离子聚合, 复合材料, 力学性能

Abstract:

The bidirectional warp?knitted glass fibers (BWKGF) were modified with 3?aminopropyltriethoxysilane and to?luene diisocyanate to prepare k?BWKGF and t?BWKGF, respectively. Polyamide 6 (PA6)/BWKGF, PA6/k?BWKGF, and PA6/t?BWKGF composites were then prepared through a thermoplastic resin transfer molding process. The structures of modified BWKGF and the microstructure and mechanical properties of the composites were characteri?zed using an infrared spectroscope, a field emission scanning electron microscope, and a universal testing machine. The results indicated that the surfaces of k?BWKGF and t?BWKGF were grafted with active groups. The surface roughness of BWKGF increased and the interfacial bonding between BWKGF and PA6 was improved after modification. In addition, the mechanical properties of the composites were improved due to the surface modification of BWKGF. The tensile strength of PA6/k?BWKGF and PA6/t?BWKGF reached 130 MPa and 140 MPa, respectively, which were 44.5 % and 55.5 % higher than that of PA6/BWKGF, respectively.

Key words: glass fiber, polyamide 6, anionic polymerization, composite, mechanical property

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