Influence of temperature distribution on the foaming quality of foamed polypropylene composites

IF 3.2 3区化学 Q2 POLYMER SCIENCE

e-Polymers Pub Date : 2023-01-01 DOI:10.1515/epoly-2022-8093

Xin Yang, Xiangyang Pei, Jia-jie Xu, Zhi-peng Yang, W. Gong, Jinjiang Zhong

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Abstract

Abstract The foamed polypropylene (PP) composites were prepared by injection molding process. Fourier’s law and software were used to calculate and simulate the internal temperature distribution of PP composites, respectively, and the influence of the temperature distribution on the foaming quality of foamed PP composites was further analyzed. The result showed that the calculative and simulated results of temperature distribution in different thermal transfer directions had great reproducibility. In different isothermal planes, the temperature from the nozzle to the dynamic mold gradually decreased. The isothermal plane with a temperature of 370.36 K had a better foaming quality, average diameter of cell and cell density were 28.46 µm and 3.7 × 1010 cells·cm−3, respectively. In different regions of the same isothermal plane, the temperature gradually decreased from the center to the edge. The foaming quality in the region (c) at a temperature of 335.86 K was ideal, and the average diameter of cell and the cell density were 26.5 µm and 2.39 × 1010 cells·cm−3, respectively. This work could provide prediction for improving the foaming quality of foamed polyolefin composites.

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温度分布对发泡聚丙烯复合材料发泡质量的影响

摘要采用注射成型工艺制备了发泡聚丙烯(PP)复合材料。利用傅里叶定律和软件分别对PP复合材料内部温度分布进行了计算和模拟，并进一步分析了温度分布对发泡PP复合材料发泡质量的影响。结果表明，不同换热方向温度分布的计算和模拟结果具有较好的再现性。在不同的等温平面上，从喷嘴到动态模具的温度逐渐降低。温度为370.36 K的等温面发泡质量较好，平均孔直径28.46µm，孔密度3.7 × 1010个孔·cm−3。在同一等温平面的不同区域，温度由中心向边缘逐渐降低。在温度为335.86 K时，(c)区域的发泡质量较理想，电池的平均直径为26.5µm，电池密度为2.39 × 1010个电池·cm−3。本研究可为提高发泡聚烯烃复合材料的发泡质量提供预测依据。

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来源期刊

e-Polymers 化学-高分子科学

CiteScore

5.90

自引率

10.80%

发文量

审稿时长

6.4 months

期刊介绍： e-Polymers is a strictly peer-reviewed scientific journal. The aim of e-Polymers is to publish pure and applied polymer-science-related original research articles, reviews, and feature articles. It includes synthetic methodologies, characterization, and processing techniques for polymer materials. Reports on interdisciplinary polymer science and on applications of polymers in all areas are welcome. The present Editors-in-Chief would like to thank the authors, the reviewers, the editorial staff, the advisory board, and the supporting organization that made e-Polymers a successful and sustainable scientific journal of the polymer community. The Editors of e-Polymers feel very much engaged to provide best publishing services at the highest possible level.