三乙醇胺对硬质聚氨酯泡沫塑料性能的影响研究  

Effect of Triethanolamine on Properties of Rigid Polyurethane Foam

作　　者：薛海蛟[1] 丁雪佳[1] 李洪波[1] 吴恒澜[1] 唐斌[1] 

机构地区：[1]北京化工大学北京市新型高分子材料制备与加工重点实验室,北京100029

出　　处：《中国塑料》2008年第10期51-55,共5页China Plastics

基　　金：北京市教委重点学科建设基金资助项目(JD100100640)

摘　　要：制备了孔径约0.5 mm 的全水发泡硬质聚氨酯泡沫塑料。研究了三乙醇胺(TEA)用量对聚氨酯泡沫塑料发泡时间、表观密度、导热性能、力学性能等的影响规律。TEA 是体系反应的催化剂,随着 TEA 含量的增大发泡时间变短。TEA 含量少于7份时,发泡反应强于凝胶反应,制品泡孔直径随着其含量增加而变大,表观密度、热导率、压缩强度、拉伸强度和弯曲强度下降,断裂伸长率上升,TEA 含量大于7份时,交联作用占主要地位,制品泡孔直径随着其含量增加而变小,表观密度、热导率、压缩强度、拉伸强度和弯曲强度增大,断裂伸长率减小。热失重分析也表明TEA 含量大于7份后产生了交联作用。The rigid polyurethane foam （RPUF） blown by water with 0.5 mm cell diameter was prepared. Effect of content of triethanolamine on foaming time, apparent density, thermal conductivity and mechanical properties of RPUF product was studied. Triethanolamine accelerated the main reactions of system, meanwhile acted as a crosslinker. With increasing triethanolamine loading, the foaming time decreased, the apparent density, coefficient of thermal conductivity, tensile strength and bending strength of the product decreased. As the degree of crosslinking enhanced, the cell diameter and elongation at break reduced.

关 键 词：聚氨酯 硬质泡沫塑料 三乙醇胺 

分 类 号：TQ328.3[化学工程—合成树脂塑料工业]