一种水性封闭型异氰酸酯的解封温度和应用研究  

Study on the Deblocked Temperature and Application of Waterborne Blocked Polyisocyanate

作　　者：崔丽荣 崔峰波 冉文华 袁向静 张萍 陆沈奇 CUI Lirong;CUI Fengbo;RAN Wenhua;YUAN Xiangjing;ZHANG Ping;LU Shenqi(R&D Center of Fiberglass Research Institute of Jushi Group Co.Ltd,Jiaxing 314500,China)

机构地区：[1]巨石集团有限公司玻璃纤维研究院产品研发中心,浙江嘉兴314500

出　　处：《聚氨酯工业》2024年第5期41-43,共3页Polyurethane Industry

摘　　要：对一种水性封闭型多异氰酸酯进行热失重和红外光谱分析,并采用丙酮萃取法对水性封闭型异氰酸酯和聚氨酯乳液的交联反应进行研究。结果表明,通过外推法推导出该水性封闭型多异氰酸酯解封起始温度和峰值温度约为108℃和164℃。当聚氨酯乳液中加入质量分数5%~10%的水性封闭型多异氰酸酯,且固化温度为160~180℃时,其胶膜丙酮萃取率较低,交联固化程度较高。A waterborne blocked polyisocyanate was analyzed by TGA and FT-IR,and the crosslinking reaction between the waterborne blocked polyisocyanate and waterborne polyurethane emulsion was studied using acetone extraction method.The results showed that the initial deblocking temperature and the peak deblocking temperature were 108℃and 164℃by linear fitting of Kissinge equation.The acetone extraction rate of film was lower and the crosslinking degree was better when 5%~10% of waterborne blocked polyisocyanate was added into polyurethane emulsion and cured at 160~180℃.

关 键 词：水性封闭型多异氰酸酯 水性聚氨酯 解封起始温度 解封峰值温度 交联 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]