摘要
高流动性共聚聚丙烯产品流动性高,适用于薄壁制品的生产,加工注塑制品易成型,产品缺陷和废品率低。采用热失重、红外、高温液相色谱、熔融结晶、偏光、力学等现代材料表征技术,对英力士气相聚丙烯装置生产的高流动性聚丙烯注塑专用料K9930H的结构和性能进行系统表征,选取市场认可度高的K9026(国产)、EP548R(合资)、AZ564(进口)作对比样,针对市场和下游用途,对K9930H冲击性能的提升展开讨论。分析力学数据的改变,结合表征数据观察K9930H,发现K9930H冲击性能、模量较低,通过改变其结晶结构(得到K9930H_改),可以在不改变聚合工艺条件下大幅提高抗冲性能。分析数据表明:保持现有聚合工艺,无需提高乙烯含量,通过氢调法提高K9930H融指到35g/10min,改变添加剂体系,是提高冲击强度、使其适用于汽车改性料基础料的最佳途径。
With high fluidity,high flow co-polypropylene is applicable to the the injection molding products are easy to shape,and product defect and production of thin-wall products, rejection rate are low.This paper adopts modern material characterization technologies including thermal weight loss,IR,high temperature liquid chromatography,meh crystallization,polarizing and mechanics to systematically characterize the structure and performance of high fluid polypropylene K9930H for injection molding produced by Ineos gas phase polypropy- lene plant,and selects K9026 （homemade）,EP548R （joint venture） and AZ564 （import） which are highly ac- cepted by the market for comparison to discuss the improvement of impact properties of K9930H according to the market and downstream applications.The changes in mechanical data are analyzed,and K9930H is ob- served according to the characterization data.It is found that the impact properties and modulus of K9930H are low.By changing the crystal structure （K9930H modified obtained） , the impact properties can be remarkably improved without changing the polymerization process conditions.The analysis resuhs show that the best way to improve its impact properties and make it a suitable base material for automotive modified material is to maintain the existing polymerization process,increase the melt index of K9930H to 35g/10min by hydrogen regulation without increasing the ethylene content,and change the additive system.
作者
马进
莫明
杜振义
胡晓华
Ma Jin Mo Ming Du Zhenyi Hu Xiaohua(PetroChina Dushanzi Petrochemical Company ,Xinjiang Laboratory of Rubber and Plastic Materials,Dushanzi Xinjiang 83369)
出处
《中外能源》
CAS
2017年第9期65-73,共9页
Sino-Global Energy
关键词
高抗冲
高流动
聚丙烯
结晶
流变评测
high impact
high flow
polypropylene
crystallization
rheological evaluation
