汽车用环保型水性聚氨酯胶粘剂的制备及其性能研究

Study on Preparation and Performance of Environmentally Friendly Waterborne Polyurethane Adhesive for Automobiles

采用脂肪族二异氰酸酯、混合二醇作为主要材料,二元胺作为扩链剂,2,2-二羟甲基丙酸的质量分数控制在3%~5%,可制备出综合性能很好的乳白带蓝光稳定水性聚氨酯乳液。测试结果表明,所合成水性聚氨酯乳液产品,均具有很好的外观与储存稳定性,其粒子具有典型的核壳结构,粒径在100nm左右,具有更好的黏结性能,合成过程使用到的有机溶剂少,符合省时、环保、经济的要求,具有广阔的应用前景。

Aliphatic diisocyanate and mixed diol were used as the main materials,binary amine was used as the chain extender,and the content of 2,2-dimethylolpropionic acid was controlled at 3%~5%,a milky white and blue light stable waterborne polyurethane emulsion with good comprehensive performance was prepared.The test results showed that the synthesized waterborne polyurethane lotion products had good appearance and storage stability,its particles had a typical core-shell structure with a particle size of about 100 nm,and had better bonding performance.The synthesis process used less organic solvents,meeting the requirements of time-saving,environmental protection and economy.It has broad application prospects.