氧化石墨烯/次磷酸铝杂化物的制备及其对PC/ABS合金阻燃性能的改善  

Preparation of graphene oxide/aluminum hypophosphite hybrids and improved flame retardancy of polycarbonate(PC)/acrylonitrile buta⁃diene styrene(ABS)blends

作　　者：张竞帆 张胜[1] 赵景茂[1] ZHANG JingFan;ZHANG Sheng;ZHAO JingMao(College of Materials Science and Engineering,Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]北京化工大学材料科学与工程学院,北京100029

出　　处：《北京化工大学学报（自然科学版）》2024年第5期46-53,共8页Journal of Beijing University of Chemical Technology(Natural Science Edition)

基　　金：“非金属材料创新中心”创新基金(2023SFP4-1)。

摘　　要：聚碳酸酯(PC)/丙烯腈-丁二烯-苯乙烯(ABS)合金作为用量最大的塑料合金之一,在使用过程中其易燃性对人民的生命财产安全造成了严重的威胁,因此对其进行阻燃改性十分必要。通过自组装方法,制备了聚乙烯亚胺(PEI)接枝氧化石墨烯纳米片(PEI-GO)来修饰次磷酸铝(AHP)。制备的PEI-GO@AHP杂化物,作为PC/ABS(质量比为70/30)合金的阻燃剂。引入质量分数为8%的PEI-GO@AHP,可确保PC/ABS达到UL-94 V-0等级和29.1%的极限氧指数(LOI)。其最大热释放速率(PHRR)和总热释放量(THR)分别降低了41.0%和19.6%。本研究提供了一种简单而有效的方法来制备阻燃PC/ABS合金。As one of the most used plastic alloys,the flammability of polycarbonate(PC)/acrylonitrile butadiene sty-rene(ABS)(70/30 mass ratio)blend(PC/ABS)alloys is a threat to the safety of people's lives and property during its service,so it is necessary to improve the flame retardancy of the PC/ABS alloys.Herein,poly-ethylenimine(PEI)-grafted graphene oxide nanosheets(PEI-GO)were fabricated to decorate aluminum hypophosphite(AHP)through a self-assembly strategy.PEI-GO@AHP hybrids were prepared as a flame retardant for PC/ABS blends.The addition of 8%mass ratio PEI-GO@AHP to PC/ABS resulted in a material with a UL-94 V-0 rating and a limiting oxygen index(LOI)of 29.1%.The peak heat release rate(PHRR)and total heat release(THR)were decreased by 41.0%and 19.6%,respectively.Furthermore,the PEI-GO nanosheets reduced the phosphine(PH3)concentration during com-bustion.This work provides a simple but effective way to fabricate flame-retardant PC/ABS blends.

关 键 词：阻燃 聚碳酸酯(PC)/丙烯腈-丁二烯-苯乙烯(ABS)合金 次磷酸铝(AHP) 

分 类 号：TB381[一般工业技术—材料科学与工程]