高固含量紫外光固化水性聚氨酯的制备及其在塑料涂料中的应用  

Preparation of High Solid Content Water--borne UV Curing Polyurethane and Their Application on Plastics Coatings

作　　者：孔维良[1] 成方礼[1] 魏燕彦[1] 宗成中[1] 

机构地区：[1]青岛科技大学橡塑材料教育部重点实验室,山东青岛266042

出　　处：《中国材料科技与设备》2011年第4期46-48,共3页Chinese Materials Science Technology & Equipment

基　　金：山东省高校科技发展计划项目（J09LB05）;山东省中青年科学家科研奖励基金资助项目（BS2009CL020）.

摘　　要：选用已二异氰酸酯（HDI）、聚醚／聚己内酯多元醇、二羟甲基丙酸（DMPA）、羟基丙烯酸酯等合成光固化聚氨酯预聚物并制备成乳液。通过傅里叶变换红外光谱（FT—IR）对聚氨酯的结构进行表征，分子结构对乳液和涂膜性能具有重要的影响。实验通过调整分子结构，得到了30％wt-50％wt固含量的乳液，乳液稳定性好，耐水性优良，在塑料表面附着力好，可以满足塑料涂料性能要求的聚氨酯乳液涂料。Hexamethylene diisocyanate （HDI）, polyether glycol/polycapmlactone glycol, dimethylol propionic acid （DMPA） and hydroxyl acrylate were used to synthesize UV curing polyurethane prepolymer for preparing latex Fourier transform Infrared spec- trometry with attenuated total reflectance （FTIR--ATR） was used for characterizing the structure of polyurethane Molecular structure had an important influence on the properties of latex and coatings. The optimum molecular structure was chosen and its latex with the solid content of 30%wt to 50%wt had a good storage stability. The coating had a good water--resistance, excellent aclhension property on the surface of plastics and was able to satisfy the requirement of plastics coatings.

关 键 词：水性聚氨酯 高固含 塑料涂料 紫外光固化 附着力 

分 类 号：TB34[一般工业技术—材料科学与工程]