摘要： 以 Q235 钢作为基体材料，采用喷涂的方法制备了耐温耐磨聚酰胺酰亚胺（PAI）涂层材料。利用 MMW-1 型万能摩擦磨损试验机研究了 SiC 及聚四氟乙烯（PTFE）含量对 PAI 涂层摩擦学性能的影响，同时对 PAI 涂层进行了 TG 热性能分析。 结果表明：当 SiC 含量为 10% （质量分数）、PTFE 含量为 0.8%（质量分数）时，PAI 涂层摩擦学性能达到最优；TG 曲线表明制备的 PAI 涂层热失质量温度在 350 ℃以上；PAI 涂层在 250 ℃保温 1 h 后，表面无气泡、剥落及裂纹等缺陷。
关键词:
聚酰胺酰亚胺,
复合涂层,
SiC,
PTFE,
摩擦磨损
Abstract: Polyamide-imide(PAl) composite coatings were formed on surface of Q235 stainless steel substrates via spraying process at room temperature. The effect of SiC and PTFE content on the frictional wear performance of PAl coatings was investigated using MMW-1 universal frictional wear testing machine, meanwhile, thermal property of PAl coatings was investigated by thermogravimetric analysis (TG). The results showed that the friction coefficient and wear rate of PAl coatings gave the best value when the content of SiC and PTFE was 10% and 0. 8% respectively TG curve of PAl coatings revealed that the weight loss temperature was 350℃,moreover, the surtace of PAl coatings was perfect without bubbling,more than350℃ peeling and cracking after being heated at 250°C for 1 h.
Key words:
polyamide-imide,
composite coatings,
SiC,
PTFE,
frictional wear
孙瑞敏, 赵 辉, 周永恒. 聚酰胺酰亚胺复合涂层的制备及摩擦磨损性能研究[J]. 涂料工业, 2014, 44(7): 1-4.
Sun Ruimin, Zhao Hui, Zhou Yongheng. Preparation of PAI Composite Coatings and Its Frictional Wear Performance[J]. Paint & Coatings Industry, 2014, 44(7): 1-4.