玻璃钢/镁合金复合板的层间剪切性能研究  

Study on Interlaminar Shear Properties of GFRP/Mg Laminate

作　　者：张玺 刘刚 解芳[1] 刘蒙恩[1] 胡发平[2] ZHANG Xi;LIU Gang;XIE Fang;LIU Meng′en;HU Faping(School of Intelligent Manufacturing,Nanyang Institute of Technology,Nanyang 473000,China;College of Materials Science and Engineering,Chongqing University,Chongqing 400044,China)

机构地区：[1]南阳理工学院智能制造学院,河南南阳473000 [2]重庆大学材料科学与工程学院,重庆400044

出　　处：《有色金属工程》2021年第3期21-26,共6页Nonferrous Metals Engineering

基　　金：国家自然科学基金资助项目(51605230);南阳理工学院2018年度博士科研启动项目(510074)。

摘　　要：采用扫描电子显微镜(SEM)、短梁弯曲法对采用不同表面处理镁合金制备的玻璃钢/镁合金复合板(Glass Fiber Reinforced Plastic/Magnesium Laminate,GFRP/Mg)的界面形貌和层间剪切强度进行了观察、测试和分析。结果表明,经磷酸盐处理和高锰酸盐处理后,镁合金的表面自由能分别比仅打磨处理提高了约53.7%和64.6%,其表面润湿性得到了明显改善。但镁合金表面处理对GFRP/Mg复合板的层间剪切强度影响较小,采用三种不同表面处理镁合金制备的GFRP/Mg复合板的层间剪切强度相近。相对地,GFRP/Mg复合板的层间剪切强度受镁合金表面粗糙度的影响更大一点。当镁合金的表面粗糙度为0.92μm时,GFRP/Mg复合板的层间剪切强度比镁合金表面粗糙度为0.23μm时提高了13%左右。GFRP/Mg复合板的层间剪切失效主要以界面粘接破坏为主。The interfacial morphology and interlaminar shear strength of glass fiber reinforced plastic/magnesium laminate(GFRP/Mg)were observed,tested and analyzed by scanning electron microscope(SEM)and short beam bending teat.The results show that the surface energy of magnesium alloys treated by phosphating and permanganate are about 53.7%and 64.6%higher than that by abrasion-only,respectively,and the surface wettability of magnesium alloy are obviously improved by phosphating and permanganate.However,the surface treatment of magnesium alloy has little influence on the interlaminar shear strength of GFRP/Mg laminate.The interlaminar shear strengths of GFRP/Mg laminates based on three surface treated magnesium alloys are similar.The surface roughness of magnesium alloy has a great influence on the interlaminar shear strength of GFRP/Mg laminate.When the surface roughness of magnesium alloy is 0.92μm,the interlaminar shear strength of GFRP/Mg laminate is about 13%higher than that of magnesium alloy with surface roughness of 0.23μm.When interlaminar shear failure occurs,the GFRP/Mg laminate is mainly destroyed by interface bonding failure.

关 键 词：镁合金 表面处理 润湿性 纤维金属层板 层间剪切强度 

分 类 号：TB333[一般工业技术—材料科学与工程]