原位反应法制备CuO/PPS复合涂层及其表征  

Preparation and Characteration of CuO/PPS Composite Coating by In-situ Reaction

作　　者：龚建彬[1,2] 龙春光[3,2] 粟洋[3] 曹太山[3] 周扬[3] 

机构地区：[1]长沙理工大学物理与电子科学学院,长沙410004 [2]湖南大学汽车车身先进设计制造国家重点实验室,长沙410012 [3]长沙理工大学汽车与机械工程学院,长沙410004

出　　处：《中国表面工程》2012年第3期71-75,共5页China Surface Engineering

基　　金：湖南大学汽车车身先进设计制造国家重点实验室开放基金(31015010);湖南省科技成果转化项目(2011CK3070)

摘　　要：利用CuSO4与NaOH在PPS涂料中原位反应的方法掺杂CuO、通过浸涂制备了CuO/PPS复合涂层,利用XRD分析了原位反应的产物,热重分析仪测试了涂层的热性能,销盘式磨损实验机测试了涂层的摩擦学性能,采用SEM观察分析了磨损表面,并在此基础上探讨了磨损机理。结果表明:CuO/PPS复合涂层的表面平整光洁。原位反应的产物为CuO,复合涂层的热稳定性较纯PPS树脂有所提高,热分解温度提高到536℃;CuO的加入使PPS复合涂层摩擦学性能得到明显改善,添加1.5%CuO时,摩擦因数从0.44减小到0.26,相应的磨耗降低为原来的1/3。同时发现在相同实验条件下涂层的磨损机理随CuO添加量的增加,从粘附磨损依次向磨粒磨损和疲劳磨损过渡。The copper oxide/polyphenylene sulfide composite coatings were prepared by in-situ reactive method,with copper oxide mixed in polyphenylene sulfide coatings.The in-situ reaction product was analyzed by XRD.The thermal property of the composites coating was tested by thermogravimetric and differential thermal analyzer.The tribological behaviour was investigated on pin-on-disc sliding friction and wear tester.The worn surfaces of the composite coatings were observed and analyzed by SEM,and the worn mechanism was then discussed.The results show that the surface of CuO/PPS composite coating is flat and glossy.The thermostability of the composite coatings is improved,and the decomposition temperature is 536 ℃,which is higher than that of pure polyphenylene sulfide resin.The tribological properties are obviously improved with adding copper oxide.The friction coefficient is reduced from 0.44 to 0.26,and the wear loss decreases by 66% with 1.5% CuO in PPS coatings.The mechanism of coatings is closely related to the contents of copper oxide under the same experimental conditions.

关 键 词：PPS CUO 原位反应 热稳定性 摩擦 磨损 

分 类 号：TG174.46[金属学及工艺—金属表面处理]