摘要
采用KH550硅烷偶联剂和水泥粘结剂对聚苯乙烯泡沫进行了表面改性处理,研究了水泥用量、水容量、KH550用量和VAE用量对表面改性聚苯乙烯泡沫颗粒容重的影响,并分析了氢氧化镁用量对表面改性聚苯乙烯泡沫颗粒氧指数的影响和水泥改性后聚苯乙烯泡沫颗粒用量与导热系数的关系。结果表明,随着水泥用量、水容量和VAE用量的增加,表面改性聚苯乙烯泡沫颗粒容重呈现逐渐增加的趋势;在表面改性聚苯乙烯泡沫颗粒中添加一定含量氢氧化镁,有助于提升复合材料的阻燃性能。随着隔热材料中水泥改性后聚苯乙烯泡沫颗粒用量的增加,隔热材料的导热系数呈现逐渐降低的趋势,在聚苯乙烯泡沫颗粒用量为24wt%时,隔热材料的导热系数降低为1.66 W/(m·K),降低幅度约16.16%。
The polystyrene foam is modified by KH550 silane coupling agent and cement binder,the effects of cement dosage,water capacity,KH550 dosage and VAE dosage on the bulk density of surface modified polystyrene foam particles are studied,and the influence of magnesium hydroxide dosage on surface modified polystyrene foam particles oxygen index and cement modification are also analyzed,together with the relationship between the amount of post polystyrene foam particles and thermal conductivity.The results show that with the increase of cement dosage,water capacity and VAE content,the bulk density of surface modified polystyrene foam particles increase gradually;adding a certain amount of magnesium hydroxide in the surface modified polystyrene foam particles helped to enhance the flame retardancy of the composites;with the modification of the thermal insulation material,the polystyrene foam particles are used.The thermal conductivity of the thermal insulation material shows a decreasing trend.When the amount of polystyrene foam was 24 wt%,the thermal conductivity of the thermal insulation material decreased to 1.66 W/(m·K),and the reduction rate was about 16.16%.
作者
姜奇奇
JIANG Qi-qi(Shanxi University,Taiyuan 030024,China)
出处
《建筑节能》
CAS
2020年第5期115-118,共4页
BUILDING ENERGY EFFICIENCY
关键词
聚苯乙烯泡沫
隔热材料
容重
氧指数
导热系数
polystyrene foam
thermal insulation material
bulk density
oxygen index
thermal conductivity
作者简介
姜奇奇(1994),女,山西太原人,建筑设计专业,硕士,研究方向为建筑与环境设计(2258952545@qq.com)。
