摘要
采用双金属络合催化剂(DMC)制备具有极低的不饱和度、相对分子量高、分子量分布窄、平均官能度高等特点的新型聚醚多元醇。这种超低单醇含量聚醚多元醇及部分该聚醚取代的聚四氢呋喃醚多元醇制备的聚氨酯弹性体与普通聚氧化丙烯醚多元醇(PPG)、聚四氢呋喃醚多元醇(PTMEG)聚氨酯弹性体性能相比,DMC聚醚基聚氨酯弹性体在力学性能(伸长率、拉伸强度、撕裂强度)和加工性能(釜中寿命、脱模时间等)方面获得了明显改善。
In this paper, a double-metal cyanide complex catalyst (DMC) was used to prepare a new polyether polyol with very low unsaturation, high equivalent molecula weight, narrow molecular weight distributing, high average functionality, etc. It indicates that the mechanical properties (such as elongation, tensile strengh and tear strengh) and working properties(pot life and demoulding time) of polyurethane elastomers synthesized from the new polyether polyol and MDI are superior than those of the polyurethane elastomers obtained from the common PPG and MDI. In addition, the mechanical properties and working properties of polyurethane elastomers based on PTMEG are improved obviously when part of the PTMEG ia replaced by the new polyether polyol.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2004年第2期220-223,共4页
Polymer Materials Science & Engineering
基金
中国科学院重点资助项目(KY95-S1-401-02)