摘要
采用超声辐照的方法 ,在聚氨酯反应原液体系中对微米级碳酸钙粉体进行了分散 ,然后反应成型得到增强聚氨酯泡沫塑料。用激光共聚焦扫描显微镜对其结构进行了研究。力学性能测试结果表明 ,在微米碳酸钙含量适当时 ,可以提高硬质聚氨酯泡沫塑料的压缩强度和模量 ,而不会显著降低材料的冲击强度。
Reinforced polyurethane foam with micron CaCO 3 particles which were dispersed directly in reactants (PAPI or polyol) by ultrasonic radiation was prepared. Laser confocus scanning microscope was employed to observe structures of CaCO 3 filled polyurethane foam. Results of mechanical test show that micron CaCO 3 particles in proper content can effectively enhance the compress strength and modulus of rigid polyurethane foam while do not distinctly reduce its impact strength.
出处
《中国塑料》
CAS
CSCD
北大核心
2001年第4期32-35,共4页
China Plastics
基金
国家自然科学基金!重点项目 ( 2 943 4 0 10 )
中国工程物理研究院科学基金! ( 2 0 0 0 3 2 4)联合资助
关键词
增强聚氨酯泡沫塑料
碳酸钙
超声辐照
激光共聚焦扫描显微镜
reinforced polyurethane foam
calcium carbonate
ultrasonic radiation
laser confocus scanning microscope
