聚丙烯材料粘接用底涂剂的制备  

Preparation of primer for bonding polypropylene material

作　　者：陈海桂 张志文 边峰 周亚民 彭敏 Chen Haigui;Zhang Zhiwen;Bian Feng;Zhou Yamin;Peng Min(Guangdong Pustar Adhesives and Sealants Co.,Ltd.,Dongguan 523646,Guangdong,China;School of Chemical Engineering and Energy Technology,Dongguan University of Technology,Dongguan 523808,Guangdong,China)

机构地区：[1]广东普赛达材料科技股份有限公司,广东东莞523646 [2]东莞理工学院化学工程与能源技术学院,广东东莞523808

出　　处：《中国胶粘剂》2025年第4期66-70,共5页China Adhesives

基　　金：东莞市科技特派员项目(20231800500192)。

摘　　要：以二吗啉二乙基醚(DMDEE)、氯化聚丙烯、KH-560、KH-570和硅烷树脂等为原料,制备了不同氯化聚丙烯和硅烷树脂用量的底涂剂。讨论了氯化聚丙烯、硅烷树脂和施工温度对聚丙烯材料粘接性能的影响。研究结果表明:(1)氯化聚丙烯的加入对聚丙烯材料的粘接有促进作用,但随着用量继续增加,底涂剂体系的黏度变大,导致其涂刷性变差,影响到底涂剂对基材表面的浸润和渗透能力,使得氯化聚丙烯与聚丙烯材料之间的相互作用力减弱,从而导致剪切强度和粘接内聚破坏的降低。(2)硅烷树脂的加入增加了聚丙烯材料表面的活性,并引入了活性基团。但是当硅烷树脂浓度过大时,影响底涂剂对聚丙烯材料表面的润湿,从而影响到底涂剂对聚丙烯材料的粘接效果。(3)在施工温度为-5和0℃时,涂刷性变差,影响底涂剂对基材表面的浸润和渗透能力,从而影响到底涂剂对聚丙烯材料的粘接效果。施工温度在5℃以上时,底涂剂对聚丙烯材料的剪切内聚破坏≥90%。(4)综上所述,当w(氯化聚丙烯)=3%,w(硅烷树脂)=12%(相对于底涂剂总质量而言),且施工温度在5℃以上时,制备的底涂剂对聚丙烯材料的粘接性能较好。A primer with different amounts of chlorinated polypropylene and silane resin was prepared by using 2,2'-dimorpholinyldiethyl ether(DMDEE),chlorinated polypropylene,KH-560,KH-570,and silane resin as raw materials.The influence of chlorinated polypropylene,silane resin,and construction temperature on the bonding properties of polypropylene material was discussed.The research results showed that,(1)The addition of chlorinated polypropylene had a promoting effect on the bonding of polypropylene material,but as the dosage continued to increase,the viscosity of the primer system increased,resulting in poor coating performance and affecting the wetting and penetration ability of the primer on the substrate surface.This weakened the interaction force between chlorinated polypropylene and polypropylene material,leading to a decrease in shear strength and cohesive failure of the adhesive.(2)The addition of silane resin increased the surface activity of polypropylene material and introduced active groups.However,when the concentration of silane resin was too high,it affected the wetting of the surface of polypropylene material by the primer,thereby affecting the bonding effect of the primer on polypropylene material.(3)At construction temperatures of-5 and 0℃,the coating performance deteriorated,affecting the wetting and penetration ability of the primer on the substrate surface,thereby affecting the bonding effect of the primer on polypropylene material.When the construction temperature was above 5℃,the shear cohesive failure of the primer on polypropylene material was≥90%.(4)In summary,when w(chlorinated polypropylene)=3%,w(silane resin)=12%(relative to the total mass of the primer),and the construction temperature was above 5℃,the prepared primer had excellent bonding performance to polypropylene material.

关 键 词：聚丙烯 粘接 硅烷树脂 底涂剂 

分 类 号：TQ433.9[化学工程]