摘要
采用4,4'-亚甲基双(异氰酸苯酯)和阻燃聚醚多元醇为原料,制备出阻燃聚氨酯预聚体(FRPUP),探讨了FRPUP对酚醛泡沫增韧改性作用。研究了FRPUP的用量对酚醛泡沫的力学性能、阻燃性能、隔热性能的影响。结果表明,当FRPUP添加量为2 phr时,改性酚醛泡沫的弯曲强度和压缩强度分别比未改性酚醛泡沫提升了17.3%和24.5%;改性酚醛泡沫的氧指数提高到41.5%;改性酚醛泡沫的导热系数比未改性酚醛泡沫也有所降低。
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.
作者
史逸伦
王正洲
Yilun Shi1, Zhengzhou Wang1,2(1. School of Materials Science and Engineering, Tongji University, Shanghai 201804, China ; 2. Key Laboratory of Advanced Civil Engineering Materials （ Tongji University）, Shanghai 201804, China)
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2018年第3期168-172,178,共6页
Polymer Materials Science & Engineering
基金
国家自然科学基金资助项目(21174106)
关键词
阻燃聚氨酯预聚体
酚醛泡沫
增韧
阻燃性
力学性能
flame retardant polyurethane prepolymer
phenolic foam
toughening
flame retardancy
mechanical properties
