催化体系对聚氨酯泡孔结构及其力学性能的影响  

Effect of Catalyst Systems on Cellular Structure and Properties of Polyurethane Foam

作　　者：孙冬冬[1] 顾尧[1] 孔壮[1] 董旭[1] 

机构地区：[1]青岛科技大学橡塑材料与工程教育部重点实验室,266042

出　　处：《聚氨酯工业》2011年第5期23-26,共4页Polyurethane Industry

基　　金：国家自然科学基金(批准号:20874054)

摘　　要：在A1/A33催化体系下,采用新型聚合物聚醚多元醇36/28和普通聚醚多元醇330N与TM300体系反应,制备了一种高回弹聚氨酯泡沫。考察了催化体系对聚氨酯泡沫泡孔结构以及性能的影响,探讨了孔径大小与泡沫力学性能的关系。结果表明,制品的力学性能与聚氨酯泡沫的孔径大小并不是简单的线性关系,还受泡沫开闭孔率的影响,当催化体系质量比A1/A33为0.10/0.60时,泡沫的孔径为200μm,泡沫的拉伸强度和撕裂强度最高。A kind of high resilience polyurethane foam was synthesized using polymer polyether polyols 36/28, polyether polyols 330 N and TM300 with A1/A33 as the catalyst systems. The effect of catalyst systems on cellular structure and properties of polyurethane foam was investigated, and the relation between pore size and foam mechanical properties were also discussed. It was found that the mechanical properties of foam were not simply linearly related to pore size, also influenced by other factors such as open cell or closed cell rate. The tensile and tear strength of this foam reached maximum and pore size was 200μm when the catalyst ratio of A1/A33 was 0. 10/0.60.

关 键 词：催化体系 聚氨酯泡沫 泡孔结构 力学性能 

分 类 号：TQ328.3[化学工程—合成树脂塑料工业]