微胶囊化相变材料对聚氨酯高回弹泡沫的影响  

The Effects of MicroPCMs on High-Resilience PU Foams

作　　者：王学晨[1] 由明[1] 张兴祥[1] 李伟[1] 

机构地区：[1]天津工业大学改性与功能纤维天津市重点实验室,300160

出　　处：《聚氨酯工业》2011年第4期17-20,28,共5页Polyurethane Industry

摘　　要：将密胺树脂包覆正十八烷形成的微胶囊化相变材料(MicroPCMs)引入聚氨酯软质泡沫,研究该MicroPCMs的热处理条件对聚氨酯复合泡沫制备以及其加入对泡沫结构、压缩性能、A组分体系粘度的影响。结果表明,MicroPCMs经过适当热处理后,可减小其对发泡的不利影响。MicroPC-Ms聚氨酯高回弹泡沫的泡孔孔径减小,永久压缩形变随着MicroPCMs的加入逐渐变大。由于Mi-croPCMs的加入,A组分体系粘度增加,通过在A组分中混入聚乙二醇(PEG-400)降低体系粘度,制备出了最高储热量为17.5 J/g的聚氨酯高回弹泡沫,可用于蓄热储能领域。The Microencapsulated phase change materials（MicroPCMs）which was formed by n-octadecane coated with melamine-formaldehyde resin were added in polyurethane（PU） foaming system.The effect of MicroPCMs heat treatment conditions on PU foam preparation and cell structure,compression performance,component A viscosity were researched.The results showed that the negative impact of foaming process was reduced using the heat-treated MicroPCMs.When MicroPCMs were used,the cell diameters of foams were lower,the permanent deformations were higher,and the component A viscosity was increased.When PEG-400 was mixed with component A,the viscosity of mixture was reduced.The high-resilience PU foams with the highest store heat 17.5 J/g were prepared and used in the field of store heat material.

关 键 词：微胶囊化相变材料 聚氨酯 泡沫 热处理 

分 类 号：TQ328.3[化学工程—合成树脂塑料工业]