目的 以聚酯二元醇( PBA) 、异佛尔酮二异氰酸酯( IPDI) 、植物油多元醇蓖麻油和硅烷偶联剂为原料,制备一种耐蒸煮的无溶剂聚氨酯胶粘剂。 方法 采用红外光谱( FT-IR) 、热重分析( TG) 等手段对胶粘剂的结构和性能进行了分析表征,同时考察了不同有机硅烷偶联剂的添加量对胶粘剂固化时间、粘结强度、固化膜吸水率等的影响。 结果 适量添加硅烷偶联剂可以有效提高胶粘剂的粘结强度、热稳定性和耐蒸煮性,但是硅烷偶联剂添加量过多会导致胶粘剂分层,固化困难。 结论 硅烷偶联剂添加量在 1% ~ 2% 为最佳。

Objective To prepare a kind of solvent -free polyurethane adhesives using polyester ( PBA) , IPDI and CO as the main raw materials. Methods The structure and properties of the polyurethane curing film were characterized by FT-IR and TG. The influences of different ratios of silane coupling agent to curing time, adhesion intensity and water resistance were researched. Results The addition of silane coupling agent could speed the curing time and enhance its peel strength and water resistance. However, too much silane coupling agent leads to the layering and separation of the adhesive. Conclusion The addition of silane coupling agent should be controlled within 1% ~ 2% .