塑料科技2023，Vol.51Issue(12)：43-48,6.DOI:10.15925/j.cnki.issn1005-3360.2023.12.009
计及充模影响的聚双环戊二烯固化变形研究
Study on Curing Deformation of Polydicyclopentadiene Considering Effect of Mold Filling
摘要
Abstract
Traditional research on solidification deformation simulation of reaction injection molding often overlooks the impact of the filling stage and cannot truly reflect the entire process of the actual process.The simplified model of an automobile door lower trim panel is taken as the research object,and the fluid heat transfer and curing reaction of dicyclopentadiene in the filling flow stage are considered.The convection term is introduced into the Fourier heat conduction equation and the curing reaction equation,and the thermal-chemical-fluid-solid coupling mathematical model is established.COMSOL Multiphysics software is used to simulate the temperature field,curing degree field,and stress-strain field of other decorative components in two stages:in mold and demolding.Comparing the simulation results considering the filling stage and neglecting the filling stage,it is found that the temperature field and curing degree field are already in an uneven distribution state at the end of filling,with the maximum displacement in the Z direction being 29.5 mm and 35.5 mm,respectively,with a difference of 16.9%.The higher the mold filling temperature,the greater the difference between the two simulation results.The simulation process taking into account the influence of mold filling proposed in the article is closer to the reaction injection molding process.关键词
聚双环戊二烯/充模影响/固化变形/数值模拟Key words
Polydicyclopentadiene/Filling effect/Curing deformation/Numerical simulation分类
化学化工引用本文复制引用
黄呈茂,闻健,周艳玲,李善德..计及充模影响的聚双环戊二烯固化变形研究[J].塑料科技,2023,51(12):43-48,6.基金项目
随州市新能源、轻量化、智能化专用汽车关键核心技术研发项目(2021-2022) （2021-2022）
