中国塑料2024，Vol.38Issue(11)：21-26,6.DOI:10.19491/j.issn.1001-9278.2024.11.004
超临界二氧化碳制备高强度阻燃聚苯醚复合发泡材料
Preparation of high-strength flame-retardant poly(phenylene ether)composite foams using supercritical carbon dioxide
摘要
Abstract
In this study,a type of high-strength and high-flame retardant polyphenylene ether(PPO)composite foams was prepared by using syndiotactic polystyrene(sPS)instead of high-impact polystyrene(HIPS),styrene-ethylene/butadiene-styrene block copolymers(SEBS),and halogen-free flame retardants through supercritical carbon dioxide foaming.The effect of sPS on the mechanical properties,foaming behavior,compressive strength,and flame-retardant performance of the composite foams were investigated.The results indicated that the introduction of sPS improved the rigidity and melt viscoelasticity of the composites significantly.The foamability of the composites was enhanced with an increase in the melt viscoelasticity.When 23 wt％sPS was added,the foaming rate of the composites increased from 5.9 to 36 times.The in-troduction of composite halogen-free flame retardants improved the flame-retardant performance of composite foams signif-icantly.The PPO/HIPS/sPS composite foam with a density of 0.14 g/cm3 reached a flame-retardant grade of the UL94 V-0 rating and exhibited a limiting oxygen index of 27.4 vol％.At a density of 0.29 g/cm3,the PPO/HIPS/sPS compos-ite foam containing 23 wt％of sPS presented an increase in the compressive strength from 1.9 MPa to 6.4 MPa.关键词
聚苯醚/泡沫材料/阻燃/力学性能Key words
poly(phenylene ether)/foam material/flame retardant/mechanical property分类
化学化工引用本文复制引用
吕正阳,邱健,邢海平,姜治伟,刘杰,唐涛,李三喜..超临界二氧化碳制备高强度阻燃聚苯醚复合发泡材料[J].中国塑料,2024,38(11):21-26,6.基金项目
吉林省科技发展计划项目(YDZJ202303CGZH021) （YDZJ202303CGZH021）
