深冷保温用增强型聚氨酯硬泡的制备及性能研究  

Study on the preparation and properties of reinforced polyurethane hard foam for insulation in deep cold

作　　者：徐娜[1] 宋功品[1] 陆晓燕[1] XU Na;SONG Gong-pin;LU Xiao-yan(Department of Chemical Textile Engineering,Jiangyin Polytechnic College,Jiangyin 214033,China)

机构地区：[1]江阴职业技术学院化纺系,江苏江阴214033

出　　处：《热固性树脂》2020年第4期45-48,共4页Thermosetting Resin

摘　　要：采用连续玻璃纤维毡(CFM)为增强材料,并在聚氨酯组合料中加入了反应性阻燃聚醚多元醇制备了聚氨酯硬泡复合材料。通过压缩强度、拉伸强度、闭孔率、导热系数及阻燃性测试研究了CFM的加入对聚氨酯硬泡性能的影响。结果表明,CFM的加入对聚氨酯硬泡材料的压缩强度及闭孔率有一定负面影响,但可以大幅提高材料在X/Y方向的拉伸性能,有效提高材料的防开裂性。其最佳添加质量分数为10%,所得泡沫材料的导热系数为24.98 mW/(m·K),-163℃下拉伸强度为3.59~3.63 MPa,阻燃性可达到DIN4102规定的B2等级,是一种可用于深冷保温领域且具有一定工业化前景的聚氨酯材料。The polyurethane rigid foam composites were prepared by using continuous glass fiber mat(CFM)as the reinforcing material and adding reactive flame retardant polyether polyol to the polyurethane composition. The effect of the CFM on the properties of polyurethane rigid foam was studied by the tests of compressive strength,tensile strength,closed cell ratio,thermal conductivity and flame retardancy. The results showed that the addition of CFM had a certain negative effect on the compressive strength and closed cell ratio of polyurethane rigid foam materials,but it could greatly improve the tensile properties of the material in the X/Y direction and effectively improved the material′s crack resistance. The best added mass fraction was 10%. The thermal conductivity and tensile strength at -163 ℃ of the resulting foam material was 24.98 mW/(m·K)and 3.59-3.63 MPa,respectively. The flame retardancy could reach the B2 level specified by DIN4102. The polyurethane material could be used in the field of insulation in deep cold with certain industrialization prospects.

关 键 词：连续玻璃纤维毡 聚氨酯硬泡 深冷 保温 拉伸强度 阻燃 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]