中文摘要：

简单介绍形成β晶型聚丙烯的几种常见途径及影响β晶型的各种因素，重点介绍了温度、应力、填料、成核剂及工艺条件等外部因素对β晶型形成的影响。

英文摘要：

The methods of inducing or increasing β-form proportion in PP were briefly introduced. The influences of external factors, including temperature, stress, fillers, nucleating agents and processing conditions, on the formation of β-form PP were reviewed in detail.