非异氰酸酯聚氨酯-环氧树脂涂膜的制备及性能研究

Preparation and Properties Research of NIPU-Epoxy Resins

摘要:

通过甲氧基聚丙二醇环碳酸酯与二乙烯三胺反应制备线性的非异氰酸酯聚氨酯预聚体，再与环氧树脂作用形成互穿聚合物网络的杂化非异氰酸酯聚氨酯-环氧树脂涂膜。采用FTIR对产物的结构进行了表征，测定了涂膜的性能，并对涂膜断面进行了扫描电镜分析。该涂膜硬度（铅笔）≥H；耐冲击性为50/cm.kg；对水、汽油、盐雾 分别在96h、48h、500h不起泡、不变色、不脱落，对金属底材有优异的附着力。

Abstract:

The Non-isocyanate Polyurethane（NIPU）- Epoxy Resins were prepared by methoxyl PPG cyclic carbonate、diethylenetriamine(DETA) and epoxy resins. The structure of NIPU was confirmed using FT-IR. The microscopic structure of the resins was observed by SEM. The Hardness(pencil) of the coating membrane show up H type. And the coating would not bubbling, discoloring, peeling respectively in the water(96h), gasoline(48h) and salt fog(500h), and it has excellent adhesion for metal substrate.