拉挤工字形复合绝缘子芯体工艺过程的热传递和固化模拟  

Simulation of heat transfer and curing of pultruded H-shaped insulator core rod process

作　　者：路振华 周松松 周军 杜怡君 李鹏[1] LU Zhenhua;ZHOU Songsong;ZHOU Jun;DU Yijun;LI Peng(School of Materials Science and Engineering,Beijing University of Chemical Technology,Beijing 100029,China;China Electric Power Research Institute,Beijing 100192,China)

机构地区：[1]北京化工大学材料科学与工程学院,北京100029 [2]中国电力科学研究院有限公司,北京100192

出　　处：《复合材料科学与工程》2025年第3期121-129,共9页Composites Science and Engineering

基　　金：国家电网有限公司总部管理科技项目(5500-202255114A-1-1-ZN)。

摘　　要：通过COMSOL软件对复合材料绝缘子芯体的拉挤工艺进行有限元模拟,本研究旨在调整和优化工艺参数,并为实际生产提供参考。将基体树脂的固化放热等效为内热源,对复合材料拉挤过程中的温度场和固化度场进行耦合,模拟芯体截面不同位置处的温度和固化度变化。通过模拟分析圆形和工字形截面芯体在相同工艺参数下的差异,重点考察了拉挤速度、模具温度和初始物料温度等参数对工字形芯体温度和固化度的影响。结果显示,与圆形截面芯体相比,工字形芯体显示出更小的温度梯度、更快的固化速率和更优异的固化度。有限元模拟为工字形芯体拉挤工艺参数提供理论参考,将模拟得到的最佳工艺参数应用于实际生产后,成功获得了致密均匀的环氧树脂基复合材料芯体,且实际生产结果与模拟结论一致。Finite element simulation of the pultrusion process of composite insulator cores is carried out by COMSOL software,and this study aims to adjust and optimize the process parameters and provide reference for actual production.The curing exotherm of matrix resin is equated as an internal heat source,and the temperature field and curability field in the composite pultrusion process are coupled to simulate the temperature and curability changes at different locations of the core cross-section.By simulating and analyzing the difference between circular and H-shaped cross-section cores under the same process parameters,the effects of parameters were highlighted.The results show that the H-shaped core exhibits a smaller temperature gradient,faster cure rate,and superior curability compared to the circular cross-section.The finite element simulation provides theoretical reference for the pultrusion process parameters of the H-shaped core.After applying the optimal process parameters obtained from the simulation to the actual production,a dense and uniform epoxy matrix composite core was successfully obtained,and the actual production results were consistent with the simulation conclusions.

关 键 词：复合材料 工字形芯体 拉挤工艺过程 热传递和固化模拟 工艺参数 

分 类 号：TB332[一般工业技术—材料科学与工程]