摘要
透明聚丙烯产品通常低温抗冲击性能较差,应用范围受到极大限制。高抗冲透明聚丙烯RC-20M同时结合无规共聚聚丙烯和抗冲共聚聚丙烯的优点,具有优良的低温抗冲性能、透明度高、密封性强等特点。采用多种分析测试手段,对高抗冲透明聚丙烯RC-20M产品的基础性能及微观结构进行评价研究。通过优化注塑工艺,探究了注塑工艺对产品力学性能及光学性能的影响。结果表明:RC-20M产品结晶度较高,结晶速率较快,具有较好的结晶能力,有利于缩短成型周期,提高制品尺寸稳定性。产品橡胶相粒径较小且均一度高,是产品具有优异的抗冲击性能和光学性能的主要原因。RC-20M在熔体温度低、保压时间短、射胶速度小、射胶压力低、注射速度低等注塑工艺下,产品的光学性能与抗冲击性能均有所提升。
Transparent polypropylene products usually have poor low-temperature resistance impact performance,and the application scope is greatly limited.The high impact strength transparent polypropylene RC-20M is also combined with the advantages of random transparent polypropylene and impact resistant copolymer polypropylene,which has the characteristics of excellent low temperature resistance,high transparency,and strong sealing.This article adopts a variety of analysis and test methods,and evaluates the basic performance and micro-structures of high impact strength transparent polypropylene RC-20M products.By optimizing the injection molding process,the influence of the injection molding process on the mechanical and optical properties of the product was investigated.The results show that RC-20M products have a high crystallization,the crystallization rate is fast,and has a good crystallization ability,which is conducive to shortening the molding cycle and improving the size stability of the product.The small particle size and high degree of homogeneity of the rubber phase of the product are the main reasons for the excellent impact resistance and optical properties of the product.The optical properties and impact resistance performance of the product are improved under the injection molding process of low melting temperature,short holding time,low glue speed,low glue pressure,and low injection speed.
作者
付莹
郝春波
李娇
李秉荣
武天希
吕思奇
吴旭
FU Ying;HAO Chun-bo;LI Jiao;LI Bing-rong;WU Tian-xi;LÜSi-qi;WU Xu(North Huajin Chemical Industries Group Corporation,Panjin 124021,China)
出处
《塑料科技》
CAS
北大核心
2024年第8期39-44,共6页
Plastics Science and Technology
关键词
高抗冲透明聚丙烯
微观结构
注塑工艺
抗冲击性能
光学性能
High impact strength transparent polypropylene
Micro structure
Injection molding process
Impact resistance performance
Optical properties
作者简介
联系人:付莹,lnfuying@163.com。
