新型弹性丙烯酸聚氨酯玻璃钢底漆的研制

Development of a Novel Elastic Acrylic Polyurethane FRP Primers

以弹性丙烯酸树脂和HDI聚合物为成膜物制得双组分玻璃钢专用底漆,经测试其各项性能达到设计要求。研究发现:不同官能度的HDI聚合物固化剂对涂料的力学性能和施工性能有影响,但对耐化学品和耐久性影响不大;带亲颜料基团的高分子嵌段共聚物分散剂对漆料的研磨效率和贮存稳定性贡献要大于氨基聚酯型分散剂;有机改性膨润土和气相二氧化硅比聚乙烯蜡浆对涂料喷涂施工厚度提高效果要明显。

Fiberglass reinfored plastic （FRP） primers was prepared from elastic acrylic resin ＆ HDI polymer as film -forming materials, whose various properties met the designed requirements. It was found that different HDI polymer curing agents with various functionality affected primers＇ mechanical property and workability, and slighthly affected primers＇ chemical resistance and durability. High molecular weight block copolymer dispersaut with pigment - compatible groups was better than amino polyester dispersant for primers＇ grinding and storage. Organic modified bentonite and fumed silica both had more contributions to improvement of film thickness than polyethylene wax slurry did.