中文摘要：

采用纳米CaCO3作为载体制备了负载型β-成核剂及其β-成核-PP，用DSC和XRD研究了载体纳米CaCO3用量和负载型β-成核剂用量对成核PP结晶与熔融行为和β-PP含量的影响，并与传统β-成核剂庚二酸钙（CaHA）成核PP比较。结果表明，负载型β-成核剂比β-成核剂CaHA成核PP具有高的结晶温度，负载型β-成核剂成核PP结晶温度随其用量增加而提高，但随载体用量增加而降低。负载型β-晶成核剂β-成核作用高于CaHA成核剂，β-PP含量达90％以上；且负载型β-晶成核剂成核PP的β-PP含量受成核剂用量和成核剂中载体用量影响不大。

英文摘要：

A nano-calcium carbonate supported calcium pimelate （CallA） β-nucleating agent and β-nucleated PP was prepared. The influences of the content of support nano-calcium carbonate and supported β-nucleating agent on crystallization behaviors, melting characteristics and the content of β-PP were investigated by differential scanning calorimeter （DSC） and wide-angle X-ray diffraction （WAXD） analyses, and compared with calcium pimelate （CallA） nucleated PP. The results indicated that PP nucleated by supported β-nucleating agent showed higher crystallization temperature than that of CallA nucleated PP. The crystallization temperature and melting temperature of PP nucleated by supported β-nucleating agent increased with increasing the content of supported β-nucleating agent and decreased with increasing the content of the support nano-calcium carbonate. The content of β-iPP in the PP nucleated by supported β-nucleating agent was higher than that of CallA nucleated PP. Further more, the content of β-PP was independent on the content of supported β-nucleating agent and nano-calcium carbonate.