聚丙烯透明成核剂研究进展

Development of Transparent Nucleating Agent for Polypropylene

概述了聚丙烯用传统透明成核剂的种类和发展(包括木糖醇缩醛的开发、成核剂的超细化、功能化、超临界输运和多种成核剂的复配)。另外介绍了几种新型聚丙烯用透明成核剂——松香酸类、酰胺型、二环二羧酸及其盐和酰亚胺型成核剂。松香酸类成核剂主要有脱氢枞酸、松香酸盐、松香酸及其盐的混合物、脱氢枞酸及其盐的共晶体和松香酰胺,硬脂酸钙和线形低密度聚乙烯与松香酸类成核剂有协同效应。对于酰胺型透明成核剂,成核剂的化学结构(取代基类型、酰胺基团的连接方式、构型等)对改性聚丙烯的性能有明显影响。

The transparent nucleating agents for polypropylene were reviewed, including their development, processing, and formulation. Rosin acid, amide, dicyclocarboxylic acid, and imide constitute some new types of such nucleating agents. Rosin acid type includes dehydroabietic acid, rosin acid salts, blends of rosin acid and its salts, co-crystals of dehydroabietic acid and its salts, and rosin amide. Calcium stearate may cause synergistic effect with rosin acid type nucleating agent or with linear low density polyethylene. The effects of the chemical structure on the properties of polypropylene were also discussed.