纳米碳酸钙对硬质聚氨酯泡沫塑料力学性能的影响  

Influences of Nano-CaCO_3 on Mechanical Properties of Rigid Polyurethane Foam

作　　者：芦艾[1] 黄锐[1] 王建华[2] 周秋明[2] 田春蓉[2] 王港[1] 陈娅[2] 辛芳[2] 

机构地区：[1]四川大学高分子材料科学与工程系,四川成都610065 [2]中国工程物理研究院化工材料研究所,四川绵阳621900

出　　处：《中国塑料》2001年第8期28-31,共4页China Plastics

基　　金：国家自然科学基金重点项目 ( 2 94340 10 );中国工程物理研究院科学基金 ( 2 0 0 0 32 4)资助

摘　　要：通过超声作用 ,用在位分散聚合方法制得了纳米碳酸钙增强硬质聚氨酯泡沫塑料。结果表明 ,纳米碳酸钙可以均匀分散在PAPI中。纳米碳酸钙在较低添加量时对压缩强度和模量就有一定提高。但它会引起PAPI粘度的迅速增加 ,从而导致发泡反应困难 ,并使冲击强度在添加量为 6 % (质量 ,下同 )Rigid polyurethane foams reinforced by nano-CaCO 3 were prepared through in-situ disperse and polymerization by ultrasonic. Observation on the reinforced polyurethane foam showed that nano-CaCO 3 particulars had been dispersed uniformly and steadily in PAPI liquid. The results of mechanical tests revealed that nano-CaCO 3 particles in low loading fraction could increase mildly the compress strength and modulus of rigid polyurethane foam. But addition of nano-CaCO 3 conduced the rapid accretion of viscosity of PAPI, which made the foam reaction difficult and contributed to the impact strength decrcase even in addition of 6 % nano-CaCO 3.

关 键 词：聚氨酯泡沫塑料 纳米碳酸钙 超声波 硬质泡沫塑料 力学性能 

分 类 号：TQ328.3[化学工程—合成树脂塑料工业] O631.21[理学—高分子化学]