HFC-245fa对聚氨酯硬泡板材性能影响的研究  

Influence of HFC-245fa on Properties of Rigid PU Foam Panel

作　　者：刘访艺 王浩臻 蒋小龙 程栋 窦忠山 

机构地区：[1]万华节能科技集团股份有限公司,山东烟台264000

出　　处：《聚氨酯工业》2017年第4期27-30,共4页Polyurethane Industry

摘　　要：研究了发泡剂HFC-245fa在硬质聚氨酯泡沫板材配方体系中替代部分发泡剂HCFC-141b后对反应时间、泡沫密度、氧指数、发泡曲线、压缩强度、导热系数、尺寸稳定性、耐候性等方面的影响。实验结果表明,用部分HFC-245fa替换体系中的HCFC-141b后,自由发泡速度减慢,密度增加;生产的板材密度降低,压缩强度降低,导热系数降低,尺寸稳定性提高,可以通过耐候性实验测试,泡沫的氧指数基本不变。The effects of the blowing agent HCFC-141b in the formula of rigid polyurethane foam panel replaced in part by HFC-245fa on the properties change in reaction time, foam density, limited oxygen index, foaming curve, compression strength, thermal conductivity, dimensional stability and weather resistance were researched. The results showed that the reaction time was prolonged, and the foam had higher density in free foaming process after the replacement, while the panel had lower density, lower compression strength, lower thermal conductivity, better dimensional stability and the panel could pass the test of weather resistance. The limited oxygen index had no obvious changes.

关 键 词：HFC-245FA 硬质泡沫塑料 聚氨酯 保温板材 发泡剂 

分 类 号：TQ328.3[化学工程—合成树脂塑料工业]