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将5～30份的纳米碳酸钙(nano-CaCO3)添加至无规共聚聚丙烯(PP-R)树脂中,采用原位气泡拉伸法(ISBS法)将树脂基体中的nano-CaCO3分散,制备出PP-R/nano-CaCO3复合材料。对复合材料进行扫描电子显微镜观察,发现ISBS法可以将nano-CaCO3均匀地分散到PP-R中;通过力学性能测试表明:当nano-CaCO3添加量为20份时,ISBS法制备的复合材料的缺口冲击强度与机械分散法相比提高20.4%。研究结果表明:与传统的机械分散法相比,ISBS法可以将nano-CaCO3更均匀地分散到PP-R中,使nano-CaCO3在PP-R中达到纳米级尺度的分散,进而得到高韧性的聚丙烯复合材料。
5 to 30 parts of nano-CaCO3 are added to the random copolymer polypropylene (PP-R) resin, and the nano-CaCO3 in the resin matrix is dispersed by the in-situ bubble stretching method (ISBS method) Prepared PP-R / nano-CaCO3 composite. Scanning electron microscope (SEM) observation showed that the ISBS method can disperse nano-CaCO3 evenly into PP-R. The mechanical properties of the composites show that when the content of nano-CaCO3 is 20, Notched impact strength and mechanical dispersion compared to 20.4%. The results show that compared with the traditional mechanical dispersion method, the ISBS method can disperse the nano-CaCO3 into the PP-R more evenly and make the nano-CaCO3 dispersed in the nano-scale in the PP-R to obtain the high toughness Polypropylene composite material.