有机化工与催化 酰胺型β成核剂对聚丙烯性能的影响

通过在抗冲聚丙烯基础树脂中添加自主研制的酰胺型高效β成核剂FB-1,在提高聚丙烯耐热温度的同时有效提高聚丙烯的冲击强度,介绍β成核剂的复配及超细化,研究β成核剂含量对共聚聚丙烯EPS30R冲击强度的影响,考察β成核剂改性聚丙烯的加工稳定性及β成核剂改性共聚聚丙烯的结晶行为。结果表明,加入成核剂后,聚丙烯冲击性能显著提高,β晶型聚丙烯的热稳定性及反复加工性能良好, FB-1成核剂能有效促进聚丙烯中β晶型的形成,而且β成核剂只改变β晶型含量,不改变其微观结构,β成核剂对聚丙烯中的α晶型没有影响。

Effect of amide type β nucleating agent on the properties of polypropylene

By adding the self-developed amide type high-efficient β-nucleating agent to the polypropylene base resin,the impact strength of the polypropylene was effectively improved while the polypropylene heat-resistant temperature was enhanced.The complexing and superfine β nucleating agent was introduced.The effects of β nucleating agent contents on the impact strength of EPS30R,the processing stability of β nucleating agent modified polypropylene and the crystallization behavior of β-nucleating agent modified polypropylene were investigated.The results showed that the thermal stability and the reprocessing performance of β-crystalline polypropylene were good,and the nucleating agent FB-1 could effectively promote the form of β-crystalline in polypropylene.β nucleating agent only changed the concentration of β crystal form and did not change its microstructure, and β nucleating agent had no effect on α crystal form in polypropylene.