掺杂氧化锆超细粉在聚丙烯中的分散

Dispersion of Ultrafine Zirconia Powder in Polypropylene (PP)

综述了有关文献，探讨了目前几个高科技火炬企业生产中出现的问题．提出改用微米级粉末，评估和控制其原始团聚，优化偶联剂种类及含量，可解决纺织工艺中的掺杂氧化锆超细粉在聚丙烯中分散的难题．研究发现，０．５ｗｔ．％的钛酸脂偶联剂就可以显著地提高氧化锆的分散度，使粉末含量高达７０ｗｔ．％的样品，其分散效果反而比粉末含量５０ｗｔ．％的专利产品稍好．

Having reviewed the relative literature, the authors have discussed the difficulties in making the patented product. The follows have been suggested to improve the dispersion of the altrafine zirconia powder in polypropylene: choosing alternative submicrometer powder; evaluating the agglomeration level of the original powder to control the powder preperation processing; and measuring rheological properties of melted polypropylene mixed with the powder to optimize the type and quantity of a coupling agent. The research found that sample with 0.5 wt% titanic acid ester agent at 70 wt% solid concentration has achieved slightly better dispersion, compared with the patented product at 50 wt%.