汽车罩光清漆用双组分水性丙烯酸树脂涂料的制备及其性能  

Synthesis and properties of two-component waterborne acrylic resin coatings for automobiles

作　　者：来水利[1] 王晶丽 于金凤[1] 

机构地区：[1]陕西科技大学教育部轻化工助剂化学与技术重点实验室,陕西西安710021

出　　处：《陕西科技大学学报（自然科学版）》2016年第3期76-81,共6页Journal of Shaanxi University of Science & Technology

基　　金：陕西省科技厅科技攻关计划项目(2015SF266);陕西省教育厅重点实验室科研计划项目(12JS016);咸阳市科技计划项目(2012k05-02);榆林市科技计划项目(2011)

摘　　要：合成出了水性羟基丙烯酸树脂并将其用于汽车罩光清漆.研究了引发剂用量、硬/软单体配比、丙烯酸用量等对树脂性能的影响,采用傅里叶变换红外仪(FT-IR)、热重分析仪(TGA)、激光粒径散射仪(DLS)、透射电镜(SEM)分别对聚合物的分子结构、热稳定性、乳液粒径以及乳胶粒形态进行了分析表征,还研究了双组分清漆应用时间对乳液黏度及漆膜硬度的影响.结果表明:当硬/软单体为45/20(硬软单体质量比)、引发剂用量为2%(占单体总量)、丙烯酸用量为6%时,水性丙烯酸树脂综合性能良好;双组分罩光清漆随应用时间的增加,其乳液黏度增大而漆膜硬度减小,故应在3h内施工完成.Synthesis of water-borne hydroxyl acrylic resin in automotive finishing varnish,the dosage of initiator,ratio of hard/soft monomers,dosage of acrylic acid on the properties of paint film was studied.Change of the resin structure,thermal stability,the emulsion particle size and the latex particle morphology of resin molecular was studied respectively with FT-IR,TGA,DLS and SEM.The two-component varnish applied time effecting on the viscosity of emulsion and hardness of coating was investigated.Results show that when the dosage of initiator is 2%,weight ratio hard/soft monomers is 45/20,acrylic acid dosage is 6%,acrylic resin has good comprehensive performances;and the two-component resin varnish over the applied time of increasing,its emulsion viscosity is increased and film hardness is decreased, to ensure the construction completion within 3 h.

关 键 词：双组分 水性丙烯酸树脂 成膜助剂 漆膜性能 

分 类 号：TQ633[化学工程—精细化工]