文献类型：期刊文献

中文题名：基于α/β复合成核剂调控等规聚丙烯刚性及韧性规律的研究

英文题名：Adjustment of Stiffness and Toughness of Isotactic Polypropylene Based on α/β Compound Nucleating Agents

作者：石尧麒[1];辛忠[1]

机构：[1]华东理工大学化学工程联合国家重点实验室化工学院产品工程系,上海200237

年份：2011

卷号：40

期号：6

起止页码：608

中文期刊名：石油化工

外文期刊名：Petrochemical Technology

收录：CSTPCD;;Scopus;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金项目(20876042);上海市优秀学科带头人计划项目(XD1401500)

语种：中文

中文关键词：等规聚丙烯;成核剂;α/β复合;结晶峰值温度

外文关键词：isotactic polypropylene; nucleating agent;α/βcompound; crystallization peak temperature

摘要：将一种α晶型成核剂NA40和一种β晶型成核剂NABW复合,在总添加量为0.2%(质量分数)时,以不同的复合比例加入到等规聚丙烯中,考察了复合比例对等规聚丙烯力学性能的影响。实验结果表明,改变两种成核剂的复合比例能够调控等规聚丙烯的刚性及韧性,并可同时提高等规聚丙烯的刚性和韧性。在上述实验的基础上,通过计算各复合比例下NA40与NABW的ΔTCp(ΔTCp为成核等规聚丙烯结晶峰值温度与等规聚丙烯结晶峰值温度的差值)之差(ΔTCpαβ),发现在最佳复合比例处两种成核剂的ΔTCpαβ绝对值最小。据此,建立了一种确定两种成核剂最佳复合比例的方法,即计算各复合比例下两种成核剂的ΔTCpαβ,取其最小绝对值对应的复合比例为该添加量下的最佳复合比例,并选取NA40/HHPA-Ba和NA40/PA-03复合体系对该方法的有效性进行了验证,证明该方法适用于不同的复合体系。
Effects of NA40/NABW compounded nucleating agents （ addition amount （ w ） 0.2 % ） with different compounded ratios on the mechanical properties of isotactic polypropylene （iPP） were investigated with NA40 as α nucleating agent and NABW as β nucleating agent. It was found that stiffness and toughness of iPP could be adjusted and enhanced simultaneously by changing the ratio of α and β nucleating agents. Compared to the others, the absolute value of difference of crystallization peak temperature between two type nucleating agents （△TCp αβ ） at the optimal compounded ratio was the smallest. According to this, a new method to determine the optimal compounded ratio of the compounded nucleating agents was developed, which was to choose the compounded ratio with minimized △TCp αβ absohite value as the optimal one. NA40/HHPA-Ba, NA40/PA-03 compounded nucleating agents were chosen to prove that the method was also applicable to other compounded nucleating agents.