聚合物熔体充模流动中的对换热行为研究

聚合物熔体充模流动中的对换热行为研究

Applied Physics 应用物理, 2018, 8(5), 204-215 Published Online May 2018 in Hans. http://www.360docs.net/doc/info-a5807c98a48da0116c175f0e7cd184254b351ba3.html /journal/app https://http://www.360docs.net/doc/info-a5807c98a48da0116c175f0e7cd184254b351ba3.html /10.12677/app.2018.85025

聚合物熔体充模流动中的对换热行为研究

聚合物熔体充模流动中的对换热行为研究

聚合物熔体充模流动中的对换热行为研究

聚合物熔体充模流动中的对换热行为研究

聚合物熔体充模流动中的对换热行为研究

文章引用: 张拯恺, 于同敏, 段春争, 邹德健. 聚合物熔体充模流动中的对换热行为研究[J]. 应用物理, 2018, 8(5): 204-215. DOI: 10.12677/app.2018.85025

The Study of Convective Heat Transfer Behavior of Polymer Melt in Micro Injection Molding

Zhengkai Zhang, Tongmin Yu, Chunzheng Duan, Dejian Zou

School of Mechanical Engineering, Dalian University of Technology, Dalian Liaoning

Received: Apr. 30th , 2018; accepted: May 15th , 2018; published: May 22nd , 2018

Abstract

The cavity temperature distribution was measured under different injection speeds when the two different grades of POM

melt fill micro mold cavity at different cavity depths; cavity surface roughness, and the heat transfer coefficient (HTC) between the melt and the micro cavity wall were calculated. The results indicate that the HTC increases with the increase of the injection speeds and the cavity surface roughness, and decreases with the increase of the cavity depth and the melt flow distance. The coupling effect between the cavity depth, surface roughness and the melt flow distance also has significant influence on HTC. The HTC is simulated by the fluent soft-ware when the POM (M90-44) melt fills the micro cavity; the results are highly consistent with the experimental results. Keywords

Micro Injection Molding, Viscous Dissipation, Convective Heat Transfer, Experimental Measurement, Numerical Simulation

聚合物熔体充模流动中的对换热行为研究

张拯恺,于同敏,段春争,邹德健

大连理工大学机械工程学院,辽宁 大连

收稿日期:2018年4月30日;录用日期:2018年5月15日;发布日期:2018年5月22日

摘 要

以不同注射速度对两种不同牌号的聚甲醛(POM)熔体,填充深度和表面粗糙度不同的微模具型腔时,对

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