PTMG型聚氨酯预聚体的研制  

Preparation of PTMG type polyurethane prepolymer

作　　者：赵彩荣[1] 刘朝晖[1] 杨洁[1] 赵伟[1] 魏柳荷[1] 张阿方[1] 

机构地区：[1]河南省科学院化学研究所,河南郑州450002

出　　处：《合成橡胶工业》2003年第2期85-87,共3页China Synthetic Rubber Industry

摘　　要：以聚四亚甲基醚二醇(PTMG)和甲苯二异氰酸酯(TDI)为原料,研究了TDI/PTMG的摩尔比和制备工艺条件,制备出了聚氨酯预聚体。结果表明,当TDI/PTMG的摩尔比为1.80～1.85,且在将PTMG分批加入TDI中的制备工艺条件下可制得相对分子质量分布窄、游离TDI质量分数低、黏度小、稳定性及可操作性能好的聚氨酯预聚体。A new class of polyurethane prepolymer was synthesized from polytetramethylene ether glycol (PTMG) and toluene diisocyanate (TDI) by investigating the ratio of raw materials and preparation process. The results showed that the prepolymer with higher stability, narrow relative molecular mass distribution, low mass fraction of free TDI, low viscosity was synthesized when the ratio of TDI/PTMG was controlled between 1.80-1.85, and PTMG was portion-wise added.

关 键 词：PTMG型 聚氨酯 预聚体 研制 聚四亚甲基醚二醇 甲苯二异氰酸酯 制备 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]