高活性阻燃聚醚多元醇的合成

Synthesis of High Reactive Flame Retardant Polyether Polyol

研究了以五溴苯基缩水甘油醚为阻燃单体 ,与环氧乙烷和环氧丙烷共聚 ,合成具有阻燃特性聚醚多元醇的方法。考察了催化剂、反应物物料比、加料方式和反应时间等因素对其物理性质及收率的影响。结果表明 ,当环氧乙烷 /环氧丙烷 /五溴苯基缩水甘油醚摩尔配比为 2∶7∶1时 ,所合成的阻燃聚醚多元醇以质量分数2 3%添入国产 2 5 # PU泡沫材料原料中 ,制得的阻燃PU泡沫材料氧指数为 2 8 5 ;与质量分数为 6 %的甲基膦酸二甲酯复配使用 ,氧指数提高到 32。

The high reactive flame retardant polyether polyol(HIROL) for polyurethane resin was synthesized by copolymerization of epoxy propane(EP), oxirane(EO), pentabromophenyl glycidyl ether(PBPGE) and glycerol, using BF 3·THF as catalyst. The effects of catalyst dosage, reagent ratio, feeding mode and copolymerization time on the physical property and product yield were examined. The results indicated that the oxygen index of soft PU foam containing 23%(mass) HIROL reached 28.5, when the mole ratio of EO∶EP∶PBPGE was 2∶7∶1 in HIROL preparation and increased to 32, when additional 6%(mass) dimethyl methyl phosphonate(DMMP) was compounded in PU foam.