Phenolic foam was modified by urethane oligomer synthesized in the Lab.The effcts of the viscosity and content of the oligomer on the powdering and elasticity of the foam were studied.

• 采用聚氨酯预聚物对酚醛泡沫塑料进行改性,研究了预聚物粘度、用量对泡沫粉化程度和回弹性的影响。