中国塑料 ›› 2025, Vol. 39 ›› Issue (3): 12-18.DOI: 10.19491/j.issn.1001-9278.2025.03.003

• 材料与性能 • 上一篇    下一篇

具有优异力学性能的钛白粉增白GFRPA复合材料的制备及性能研究

张衡1, 刘浩2, 邱守季3, 张炳4, 吴叔青1()   

  1. 1.华南理工大学材料科学与工程学院,广州 510640
    2.华南理工大学机械与汽车工程学院,广州 510640
    3.广州华新科智造技术有限公司,广州 510663
    4.中信钛业股份有限公司,辽宁 锦州 121005
  • 收稿日期:2024-05-23 出版日期:2025-03-26 发布日期:2025-03-24
  • 通讯作者: 吴叔青(1972—),副教授,研究方向为特种橡塑材料及制品,wushuqing@scut.edu.cn
    E-mail:wushuqing@scut.edu.cn

Preparation and properties of TiO2⁃whitening PA6/GF composites with excellent mechanical performance

ZHANG Heng1, LIU Hao2, QIU Shouji3, ZHANG Bing4, WU Shuqing1()   

  1. 1.School of Materials Science and Engineering of South China University of Technology,Guangzhou 510640,China
    2.School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510640,China
    3.Guangzhou Huaxinke Intelligent Manufacturing Technology Co,Ltd,Guangzhou 510663,China
    4.CITIC Titanium Industry Co,Ltd,Jinzhou 121005,China
  • Received:2024-05-23 Online:2025-03-26 Published:2025-03-24
  • Contact: WU Shuqing E-mail:wushuqing@scut.edu.cn

摘要:

分别使用大分子多元酸(BA)和月桂酸(LA)对钛白粉进行表面改性,并通过挤出成型得到白色PA6/GF复合材料。通过对复合材料的结晶行为、界面性质以及力学性能的测试,发现在添加量均为3 %(质量分数,下同)时,与纯钛白粉相比,LA改性钛白粉对PA6/GF复合材料力学性能的改善不明显,但BA改性钛白粉复合材料体系的拉伸强度、弯曲强度和缺口冲击强度分别为109、155 MPa和12.3 kJ/m2,相比添加纯钛白粉的PA6/GF复合材料分别提高了11.1 %、10.7 %和68.5 %,各项性能均达到同等加入量ZnS体系的85 %以上。

关键词: 聚酰胺6, 玻璃纤维, 钛白粉, 表面改性, 冲击强度

Abstract:

In this article, TiO2 was surface modified by macromolecular polybasic acid (BA) and lauric acid (LA) and then used to whiten the PA6/GF composites through extrusion molding. The effect of modified TiO2 on the crystallization behavior and interfacial and mechanical properties of the composites were investigated. The results indicated that there was no significant influence on the improvement of mechanical properties of PA6/GF composites at an LA⁃modified TiO2 content of 3 wt.%. However, the composites with BA⁃modified TiO2 obtained tensile strength, flexural strength and notched impact strength of 109 MPa, 155 MPa, and 12.3 kJ/m2, respectively, which were higher than those of the composites with pure TiO2 by 11.1 %, 10.7 %, and 68.5 %, respectively. All parameters reached 85 % or more of the results for the composite systems with the same amount of ZnS.

Key words: polyamide 6, glass fiber, titanium oxide, surface modification, impact strength

中图分类号: