中国塑料 ›› 2008, Vol. 22 ›› Issue (10): 51-55 .DOI: 10.19491/j.issn.1001-9278.2008.10.011

• 加工与应用 • 上一篇    下一篇

三乙醇胺对硬质聚氨酯泡沫塑料性能的影响研究

薛海蛟,丁雪佳,李洪波,吴恒澜,唐斌   

  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
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-10-25 发布日期:2008-10-25

Effect of Triethanolamine on Properties of Rigid Polyurethane Foam

XUE Hai-jiao, DING Xue-jia*, LI Hong-bo, WU Heng-lan, TANG Bin   

  1. The key Laboratory of Preparation and Processing of Novel Polymer of Beijing, Beijing University of Chemical Technology
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-10-25 Published:2008-10-25
  • Contact: DING Xue-jia

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含量增大后发泡时间变短。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上升。热失重分析也表明TEA含量大于7份后产生了交联作用。

关键词: 聚氨酯, 硬质泡沫塑料, 三乙醇胺

Abstract: The rigid polyurethane foam (RPUF) blown by water with 0.5mm 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 can accelerate the main reactions of system, meanwhile is cross linker due to its special molecular structure. The foaming time was shorter with the triethanolamine ratio increasing. At the same time, the apparent density, coefficient of thermal conductivity and strength of product descended(before 7 phr) then ascended(after 7 phr), while the cell diameter and percentage of elongation at break of product have reversed trends.

Key words: polyurethane, rigid foam, triethanolamine