柔性保温管用聚氨酯硬泡组合料研究  

Study on polyurethane rigid foam system for flexible insulating pipe

作　　者：周鹏 李同续 Zhou Peng;Li Tongxu(Liming Research&Design Institute of Chemical Industry Co.,Ltd.,Luoyang 471000,China)

机构地区：[1]黎明化工研究设计院有限责任公司,河南洛阳471000

出　　处：《化学推进剂与高分子材料》2024年第4期51-55,共5页Chemical Propellants & Polymeric Materials

摘　　要：选择适宜的长链聚醚多元醇,通过一步法制备了全水发泡柔性聚氨酯硬泡,应用于预制直埋保温复合塑料管。柔性聚氨酯硬泡的泡沫力学性能和导热系数均可满足GB/T 29047—2021《高密度聚乙烯外护管硬质聚氨酯泡沫塑料预制直埋保温管及管件》的要求。By selecting a suitable long-chain polyether polyol,all-water-blown flexible polyurethane rigid foam was prepared by one-step method and applied to prefabricated directly buried insulating composite plastic pipes.The mechanical performance and thermal conductivity coefficient of the flexible polyurethane rigid foam could meet the requirements of GB/T 29047—2021 Prefabricated directly buried insulating pipes and fittings with polyurethane foamed-plastics and high density polyethylene casting pipes.

关 键 词：聚氨酯硬泡 柔韧性 全水发泡 一步法 保温管 

分 类 号：TQ328.3[化学工程—合成树脂塑料工业]