高固含量接枝聚醚质量影响因素探讨  

Study on Quality Influencing Factor of High Solid Graft Polyether Polyol

作　　者：蒋树会 

机构地区：[1]浙江温岭德丰聚氨酯有限公司,317523

出　　处：《聚氨酯工业》2001年第3期41-44,共4页Polyurethane Industry

摘　　要：对影响高固含量 (乙烯基聚合物质量分数 )接枝聚醚性能的几个因素进行了探讨 ,实验表明 ,控制苯乙烯与丙烯腈的质量比在 2 .0～ 2 .2、选择合适的分散剂 ,可获得粘度在 5 5 0 0～ 60 0 0mPa·s、固含量 4 0 %左右的接枝聚醚。对一种分散剂进行了改进 ,改善了所制得块状软泡的压陷硬度。采用复合抗氧剂 ,改善了泡沫的耐黄芯性能。研制的接枝聚醚其各项性能与进口产品的接近。用接枝聚醚与聚醚 30 10以 5 0 / 5 0质量比制得的密度为 2 7kg/m3 的块泡 ,65 %ILD为 5 98N/ (0 .0 32 3m2 ) ,拉伸强度 12 8kPa ,撕裂强度为 175N/m ,伸长率 10 7% ,回弹率 2 7%。Some factors influencing the properties of high solid (vinyl polymer content) graft polyether polyol are discussed. The graft polyol with viscosity 5500～6000 mPa·s, vinyl polymer mass fraction 40% or so was prepared by controlling the mass ratio 2.0～2.2 of styrene/acrylonitrile, and adding appropriate dispersant. Through the modifying of a dispersant, the compression load of the slabstock is increased. The using a of compound antioxidant reduces the yellowing of foam core. The technical indexes of the graft polyol are similar with those of the import. The properties of a flexible polyurethane foam made from the graft polyether polyol and conventional soft polyether 3010 (mass ratio 50/50) and other material are below: density 27 kg/m 3, tensile strength 128 kPa, tear strength 175 N/m, compression load (at 65% ILD) 598 N/(0.0323 m 2), elongation 107%, rebound 27%.

关 键 词：接枝聚醚 聚醚多元醇 聚氨酯 软质泡沫塑料 块状软泡 

分 类 号：TQ326.5[化学工程—合成树脂塑料工业]