低碳钢表面硅烷化处理对聚乙烯涂层结合强度的影响  

Effects of Silane Pretreatment for Low Carbon Steels on the Adhesive Strength of Polyethylene Coatings

作　　者：王雪明[1] 李国丽[2] 李爱菊[3] 

机构地区：[1]北京航空航天大学材料科学与工程学院,北京100083 [2]山东轻工业学院轻化与环境工程学院 [3]山东大学材料液态结构与遗传性教育部重点实验室,济南250061

出　　处：《材料工程》2007年第2期26-29,共4页Journal of Materials Engineering

基　　金：山东省优秀中青年科学家科研奖励基金资助项目(9929)

摘　　要：利用硅烷偶联剂(KH-550,KH-560,KBM-7103)对低碳钢表面进行预处理,制备了聚乙烯(PE)涂层,通过对涂层的结合强度、抗热震性能等实验,研究了硅烷化处理对涂层性能的影响。结果表明:KH-560处理法能显著提高PE涂层的结合强度,比砂纸打磨、喷砂处理分别提高了40.3%,13.2%,而KH-550,KBM-7103不能显著提高PE涂层的结合强度;对于PE涂层的硅烷化处理,适宜的KH-560的浓度为5%(体积分数),水解时间为48h;“喷砂+KH-560”处理法抗热震实验后涂层的结合强度仅降低了10.9%,远低于其他处理方法热震后的下降幅度。Polyethylene coatings were fabricated on low carbon steels after pretreatment with KH-550, KH-560 and KBM-7103, respectively. This paper focused on the effect of silane pretreatments on the property of coatings by testing the adhesive strength and thermal shock resistance of coatings. The re- sults indicated that the adhesive strength of coatings after substrates pretreated with KH-560 was higher than those with sandpaper grinding and blasting by 40. 3%, 13.2%, respectively, and that KH-550 and KBM-7103 had less effect on the adhesive strength. The optimum concentration of 5% （volume fraction） and hydrolysis time of 48h for KH-560 pretreatments can contribute to a better ad- hesive strength. Moreover, the adhesive strength obtained by the associated pretreatment of blasting and KH-560 decreased much less than that of other pretreatments after the thermal shock resistance.

关 键 词：硅烷偶联剂 聚乙烯 涂层 结合强度 表面预处理 

分 类 号：TG17[金属学及工艺—金属表面处理] TB324[金属学及工艺—金属学]