Properties of Phenolic Foams Toughened by Flame Retardant Polyurethane Prepolymer

被引：0
|
作者：
Shi Y. [1 ]
Wang Z. [1 ,2 ]
机构：
[1] School of Materials Science and Engineering, Tongji University, Shanghai
[2] Key Laboratory of Advanced Civil Engineering Materials, Tongji University, Shanghai
来源：
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2018年 / 34卷 / 03期
关键词：
Flame retardancy; Flame retardant polyurethane prepolymer; Mechanical properties; Phenolic foam; Toughening;
D O I：
10.16865/j.cnki.1000-7555.2018.03.029
中图分类号：
学科分类号：
摘要：
The flame retardant polyurethane prepolymer (FRPUP) was prepared with 4, 4'-methylenebis (phenyl isocyanate) and flame retardant polyether polyol, and was employed to toughen phenolic foams. The effects of FRPUP on the mechanical properties, flame retardancy and thermal insulation of phenolic (PF) foams were studied. The results show that the flexural strength and compressive strength of the modified phenolic foam with 2 phr FRPUP increase by 17.3% and 24.5%, respectively compared with the ones of pure PF foam. The limiting oxygen index of the modified PF foam increases to 41.5%, and the thermal conductivity of the modified foam decreases. © 2018, Editorial Board of Polymer Materials Science & Engineering. All right reserved.
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页码：168 / 172and178
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