摘要
聚氨酯预聚体是由多异氰酸酯和低聚物多元醇制备而成。对于聚氨酯预聚物的制备，预聚反应温度的最佳温度应控制在70℃；预聚反应的最佳反应时间应控制在70-90min；参加预聚反应的聚乙二醇的含水量必须控制在0．03％以下。这样才能控制好制备聚氨酯预聚体的质量。
Polyurethane pre-polymer was prepared from Polyisocyanate and Polyol oligomer. When the prepolymerization reaction temperature was 70℃, the reaction time was 70-90 rain and the water content of Polyethylene glycol in the reaction was below 0.03%,the quality of Polyurethane pre-polymer can be well controlled.
出处
《当代化工》
CAS
2009年第3期306-308,共3页
Contemporary Chemical Industry
关键词
聚氨酯预聚物
制备方法
影响因素
Polyurethane Pre-polymer
Preparation methods
Influencing Factors
