Preparation and properties of PVC/inorganic composite foam materials
Using PVC resin as the organic component,SiO2/Al(OH)3 mixture as the inorganic component,azodicarbonamide/zinc oxide/sodium bicarbonate as the composite foaming agent,antimony trioxide as the flame retardant and toluene as the solvent,organic/inorganic composite foam materials were prepared by molding foaming method.The effects of the dosages of composite foaming agent,inor-ganic mixture filler,and antimony trioxide on the properties of composite materials were studied.The re-sults showed that organic/inorganic composite foaming materials with excellent performance and low ap-parent density could be prepared from 100 parts of PVC resin,16 parts of composite foaming agent,100 parts of inorganic mixed filler,8 parts of antimony trioxide,6 parts of DOP,4 parts of calcium zinc com-posite stabilizer,1 part of stearic acid,1.5 parts of diisopropyl peroxide,and 100 parts of toluene.The apparent density of the foaming material was 80 kg/m3,the thermal conductivity was 0.032 W/(m·K),the oxygen index was 42,and the combustion level was A2.The organic-inorganic composite ma-terials prepared by this method showed good thermal insulation properties,excellent mechanical proper-ties,good flame retardancy,and had broad application prospects.
万方数据
维普
