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  

Preparation and properties of TiO_(2)-whitening PA6/GF composites with excellent mechanical performance

作　　者：张衡 刘浩 邱守季 张炳 吴叔青[1] ZHANG Heng;LIU Hao;QIU Shouji;ZHANG Bing;WU Shuqing(School of Materials Science and Engineering of South China University of Technology,Guangzhou 510640,China;School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510640,China;Guangzhou Huaxinke Intelligent Manufacturing Technology Co,Ltd,Guangzhou 510663,China;CITIC Titanium Industry Co,Ltd,Jinzhou 121005,China)

机构地区：[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

出　　处：《中国塑料》2025年第3期12-18,共7页China Plastics

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/m^(2),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。In this article,TiO_(2) 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 TiO_(2) 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 TiO_(2) content of 3 wt.%.However,the composites with BA-modified TiO_(2) obtained tensile strength,flexural strength and notched impact strength of 109 MPa,155 MPa,and 12.3 kJ/m^(2),respectively,which were higher than those of the composites with pure TiO_(2) 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.

关 键 词：聚酰胺6 玻璃纤维 钛白粉 表面改性 冲击强度 

分 类 号：TQ323.6[化学工程—合成树脂塑料工业]