PVA覆膜对Kevlar纤维表面化学镀Cu层性能的影响  

Effect of PVA coating on the performance of electroless copper plating layer on the surface of Kevlar fiber

作　　者：贾建刚[1,2] 苏铖 夏廷玺 JIA Jian-gang;SU Cheng;XIA Ting-xi(School of Materials Science and Engineering,Lanzhou Univ.of Tech.,Lanzhou 730050,China;State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals,Lanzhou Univ.of Tech.,Lanzhou 730050,China;Shenzhen Sunlike Technology Co.Ltd.,Shenzhen 518109,China)

机构地区：[1]兰州理工大学材料科学与工程学院,甘肃兰州730050 [2]兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室,甘肃兰州730050 [3]深圳市晖耀电子有限公司,广东深圳518109

出　　处：《兰州理工大学学报》2022年第5期8-14,共7页Journal of Lanzhou University of Technology

基　　金：国家自然科学基金(52162005)。

摘　　要：通过聚乙烯醇(PVA)覆膜处理的方法提高了Kevlar纤维表面金属镀层稳定性和完整性,从而提升了镀层的抗剥落能力.采用弯折剥离实验考察了镀层的抗剥落破坏情况、采用电阻仪和电子万能试验机测试了试样的导电性和力学性能,利用扫描电子显微镜(SEM)和X射线光电子能谱(XPS)研究了试样的表面形貌和表面化学价态.结果表明:PVA覆膜能够有效提升金属镀层的抗剥落破坏能力;随着PVA水解浓度的增加,PVA覆膜Cu/Kevlar纤维的表面电阻增加而柔韧性降低;当PVA溶液的水解质量浓度为5 g/L时,PVA覆膜Cu/Kevlar纤维的柔韧性、导电性和抗剥落能力能够维持在最佳状态;在此浓度下,PVA覆膜Cu/Kevlar纤维的表面电阻为0.41Ω/cm,单丝拉伸强度为2.396 GPa,Weibull分布拟合度为0.9881.The stability and integrity of the metal coating on the Kevlar fiber surface were improved by the method of polyvinyl alcohol(PVA)coating,thereby improving the anti-peeling ability of the coating.The bend-peel-off test was performed to investigate the anti-peeling ability of the metal layer.The resistance tester and the electronic universal testing machine were used to test the conductivity and tensile strength of the sample.Scanning electron microscope(SEM)and X-ray photoelectron spectroscopy(XPS)were used to study the surface morphology and chemical valence of the sample.The results showed that the PVA coating can effectively improve the anti-peeling ability of the metal coating.As the PVA concentration increases,the surface resistivity of the copper-plated Kevlar fiber increases,while the flexibility decreases.When the concentration of the PVA solution is 5 g/L,the flexibility,conductivity,and anti-peeling ability of PVA-coated Cu/Kevlar fiber can be maintained at an optimal state.At this concentration,the surface unit resistance of the PVA coated Cu/Kevlar fiber is 0.41Ω/cm,the monofilament tensile strength is 2.396 GPa,and the fitting degree of the Weibull distribution is 0.9881.

关 键 词：KEVLAR纤维 化学镀铜 聚乙烯醇 抗剥落能力 力学性能 

分 类 号：TB34[一般工业技术—材料科学与工程]