端羟基PU半预聚体改性酚醛发泡材料的研究  

Study on Phenolic Foam Modified by Hydroxyl-Ended Quasi-prepolymer of PU

作　　者：刘朝晖[1] 杨洁[1] 赵伟[1] 孟超[1] 赵彩荣[1] 

机构地区：[1]河南省精细化工重点实验室,河南郑州450002

出　　处：《塑料工业》2010年第1期36-38,共3页China Plastics Industry

摘　　要：采用端羟基聚氨酯(PU)半预聚体改性酚醛发泡材料,研究了端羟基PU半预聚体的结构、用量等因素对增韧效果的影响。结果表明,采用端羟基PU半预聚体法能够有效增加发泡材料的回弹性,在设计n(OH)/n(NCO)为4/1、端羟基PU半预聚体用量占总量2%～8%(质量分数)下,增韧效果良好。Phenolic foam modified by hydroxyl-ended quasi-prepolymer of PU was studied. Effects of the structure and amount of the hydroxyl-ended quasi-prepolymer on the reinforcement were discussed. Results showed, with the hydroxyl-ended quasi-prepolymer method, the resilience of the foam was effectively enhanced, when it was prepared at4/1 （mol ratio） ofn （OH）/n （NCO） and with 2 wt% -8 wt% of total amount, the quasi-prepolymer showed good reinforcement on phenolic foam.

关 键 词：酚醛泡沫 PU 端羟基PU半预聚体 增韧 回弹性 

分 类 号：TB383.4[一般工业技术—材料科学与工程]