连续玻纤增强聚氨酯泡沫塑料板的制备及性能

Preparation and properties of continuous glass fiber reinforced polyurethane foam composite plate

以连续玻璃纤维为增强材料,采用热压工艺制备了玻纤增强聚氨酯泡沫塑料复合板。通过熔融指数、导热系数、密度、孔隙率、储能模量测试及扫描电镜分析研究了玻璃纤维、发泡剂和相容剂的用量对复合板性能的影响。结果表明,加入玻纤可较大幅度提高聚氨酯泡沫塑料的力学强度,但会影响熔体的流动性。发泡剂用量增大会降低复合板的导热系数和表观密度,而相容剂用量的增大会降低复合板的孔隙率,提升复合板的储能模量。SEM图片表明玻璃纤维与聚氨酯基体的粘连效果良好.

The glass fiber reinforced polyurethane foam composite board was prepared using continuous glass fiber as the reinforcing ma-terial by hot pressing.The effects of amounts of glass fiber,foaming agent and compatibilizer on the performance of composite board were studied by testings of melt index,thermal conductivity,density,porosity,storage modulus and scanning electron microscope analysis.The results showed that adding glass fiber could greatly improve the mechanical strength of polyurethane foam,but it would affect the fluidity of the melt.The thermal conductivity and apparent density of the composite board were decreased with the increase of foaming agent amount.The porosity of the composite board was decreased and the storage modulus was increased with the increase of compatibilizer amount.The SEM picture showed that the adhesion of the glass fiber to the polyurethane matrix was good.