Rigid polyurethane foams reinforced by nano-SiO_2 and nano-CaCO_3 were prepared through in-situation dispersion and polymerization by ultrasonic.

• 通过超声作用,利用在位分散聚合方法制得了纳米二氧化硅及纳米碳酸钙增强硬质聚氨酯泡沫塑料。