超声外场对复合材料注射成型流动行为影响的可视化实验  

Visual Experiment of the Effect of Ultrasonic Field on Melt Filling Flow Behavior in the Composite Materials

作　　者：姜开宇[1] 李豪[1] 吉智[1] 于同敏[1] 王敏杰[1] 

机构地区：[1]大连理工大学模塑制品教育部工程研究中心,辽宁大连116023

出　　处：《高分子材料科学与工程》2015年第1期98-102,共5页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(51175060);973计划项目(2012CB025905);辽宁省科技创新重大专项(201303008)

摘　　要：利用自主研制开发的基于可视化技术的超声激励注射成型装置,对超声频率为19.5kHz时,不同超声功率、不同注射速度以及不同玻纤含量条件下,短玻纤增强聚丙烯(GF/PP)复合材料熔体前沿充填型腔的状况进行直接观测记录,并对超声外场对复合熔体充型流动行为的影响进行研究。结果表明,超声外场在一定程度上改善了10%GF/PP的熔体充型流动行为,而且最佳超声功率值随着注射速度不同而有所改变,超声外场对于20%GF/PP的熔体充型流动行为改善效果并不明显。为后续研究超声外场对复合材料注塑成型特性的影响可以提供可靠依据。A novel ultrasonic injection molding device based on visualization technology was developed in this study.Using the ultrasonic injection molding device,a series of visualization experiments were conducted to record the filling process of short glass fiber reinforced polypropylene(GF/PP)composites under different ultrasonic power,injection rate and glass fiber content.Subsequently,the effect of ultrasonic field on the filling flow behavior of the composite melts was investigated.The results show that ultrasonic field improves the filling flow behavior of 10% GF/PP to some extent and the optimal ultrasonic power changes with injection rate.But the effect of ultrasonic field on 20% GF/PP is not as obvious as the effect on 10% GF/PP.On the basis of this research,the effect of ultrasonic field on the molding characteristics of composite materials can be studied further.

关 键 词：超声外场 可视化技术 短玻纤增强聚丙烯 流动行为 

分 类 号：TQ320.662[化学工程—合成树脂塑料工业]