Modification of all-water foamed polyurethane foam by doping ZIF-8
Porous low-density zeolite imidazole framework-8(ZIF-8)was prepared by using 2-methylimid-azole and zinc nitrate hexahydrate in water at room temperature polyurethane foam(PUF)with thermal in-sulation ability was prepared by one-step method with water as foaming agent.The influence of ZIF-8 on the polyurethane foams performace.The results show that adding a small amount of ZIF-8 can obviously improve the properties of polyurethane foam.When the doping amount of ZIF-8 is 1％,the thermal con-ductivity of polyurethane foam decreases by 18％,the compressive strength increases by 14.5％,and the hardness also increases obviously.It paves the way for the industrialization of all-water foamed polyure-thane foam in heat insulation.
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