高等学校化学学报Issue(5)：1075-1079,5.DOI:10.7503/cjcu20140006
静电粉末喷涂法制备不同熔融指数聚醚醚酮涂层的机械和摩擦学性能
Mechanical and Tribological Properties of PEEK Coatings with Different Melt Indexes Prepared by Electrostatic Powder Spray Technique
摘要
Abstract
Poly-ether-ether-ketone ( PEEK ) coatings with different melt indexes ( MI ) were prepared on the stainless steel substrate via electrostatic powder spraying method. Amorphous coatings were obtained by quenching the as-melted coatings into the ice-water medium. Semi-crystalline coatings were obtained by an-nealing the amorphous coatings in an oven for 30 min at 260 ℃. The XRD results indicates that the structure of PEEK coatings transforms from amorphous to semi-crystalline via the treatment of annealing. The hardness and the behavior friction of the PEEK coatings were tested. The result demonstrates that by the same treat-ment, the PEEK coatings with larger MI have higher crystallinity. The semi-crystalline PEEK coatings have higher hardness, lower friction coefficient and better wear rate than the amorphous ones. The poor fluidity of PEEK-A with lower MI leads to the rough coatings. Both of the PEEK-B and PEEK-C with larger MI can form smooth coatings and the friction coefficients and wear rates of them are stable. The friction coefficients of semi-crystalline coatings B and C are less than 0. 15, and the wear rates are less than 20×10-6 mm3/(N·m). Therefore PEEK with larger MI is more suitable for the preparation of PEEK coating by electrostatic spraying.关键词
聚醚醚酮涂层/静电喷涂/结晶/硬度/摩擦学性能Key words
Poly-ether-ether-ketone ( PEEK ) coating/Electrostatic powder spraying/Crystallization/Hard-ness/Tribological performance分类
化学化工引用本文复制引用
祝世洋,张云鹤,李庆伟,纪凡刚,关绍巍..静电粉末喷涂法制备不同熔融指数聚醚醚酮涂层的机械和摩擦学性能[J].高等学校化学学报,2014,(5):1075-1079,5.基金项目
国家自然科学基金(批准号:51173062,51203172)资助.@@@@ Supported by the National Natural Science Foundation of China(Nos.51173062,51203172) （批准号:51173062,51203172）
