The preparation technique of polyurethane foam mat modified by organosilicon is discussed in the paper. The heatproof behavier of polyurethane is improved through modifing by organosilicon.

• 探讨了有机硅改性聚氨酯海绵衬垫的制备工艺及其影响因素，通过有机硅改性，提高了聚氨酯的耐热性。