玄武岩纤维含量对玄武岩纤维/聚乳酸-铝合金复合材料连接强度的影响  

Effect of basalt fiber content on strength of basalt fiber/polylactic acid-aluminum alloy composite adhesion

作　　者：马芳武[1] 陈实现 韩露[1] 王卓君 沈亮[1] 蒲永锋[1] MA Fangwu;CHEN Shixian;HAN Lu;WANG Zhuojun;SHEN Liang;PU Yongfeng(State Key Laboratory of Automotive Simulation and Control,Jilin University,Changchun 130025,China)

机构地区：[1]吉林大学汽车仿真与控制国家重点实验室

出　　处：《复合材料学报》2020年第2期276-283,共8页Acta Materiae Compositae Sinica

基　　金：国家重点研发计划(2016YFB0101601);吉林省省校共建计划专项项目(SXGJQY2017-7; SXGJSF2017-2-1-5);吉林省产业创新专项(2019C041-2)

摘　　要：为了提高聚乳酸(PLA)与铝合金的连接强度,采用在PLA中添加玄武岩纤维(BF)获得BF/PLA复合材料的方式对PLA进行增强。利用转矩流变仪对干燥处理后的PLA及BF进行密炼,利用光纤激光器对铝合金表面进行毛化处理。采用平板硫化机对BF/PLA复合材料和处理后铝合金进行连接成型,测试其拉伸强度,对失效后断面进行分析。结果表明:随着BF质量分数的增加, BF/PLA-铝合金连接强度先增强后降低, BF质量分数的增加影响了BF/PLA复合材料的结晶成核。结合试验获得的结果,建立有限元分析模型进行数值模拟,结果显示所建立的模型能够准确还原BF/PLA-铝合金拉伸过程。In order to improve the bonding strength between polylactic acid(PLA) and aluminum alloy, PLA was reinforced by adding basalt fiber(BF). PLA and BF after drying were mixed by torque rheometer, and aluminum alloy surface was textured by fiber laser. The BF/PLA composites and the treated aluminum alloy were joined by a flat vulcanizing machine. The tensile strength of the BF/PLA-aluminum alloy composites was tested and the fracture surface was analyzed after failure. The results show that with the increase of BF mass fraction, the BF/PLA-aluminum alloy bonding strength shows a trend of strengthening first and then decreasing, and the increase of fiber mass fraction affects the crystallization and nucleation of the BF/PLA composite. Based on the experimental results, the finite element analysis model was established to simulate the tensile process of BF/PLA-aluminum alloy. The results show that the model can accurately restore the tensile process.

关 键 词：玄武岩纤维 聚乳酸 复合材料 金属表面处理 金属-塑料连接强度 数值模拟 

分 类 号：TB332[一般工业技术—材料科学与工程]