PBT材料在车载智能连接器注塑成型中的多场耦合优化

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中图分类号：U463.6 文献标识码：A 文章编号：1003-8639（2025）11-0158-03

Multi-fieldCouplingOptimizationofPBTMaterialinAutomotiveSmartConnectorInjection Molding

Zhai Panpan (Department of Construction Information Engineering,Henan Technical College of Construction, Zhengzhou 450064, China)

【Abstract】The integration of automotive electronics puts extreme demands onthe miniaturization,high-density andextreme working conditionreliabilityof automotive smartconnectors.Polybutylene terephthalate has become thecore shellmaterialbyvirtueof itsexcellentelectricalinsulation,heatresistanceanddimensionalstabilitybutthemultifield coupling of melt flow,heat conduction,pressure transferandcrystalization shrinkage inthe injection molding process is proneto inducing non-uniformcrystallne orientation andresidual stress concentration.Especiallyin the manufacture of microstructuredconnectors,theabovecouplingefectissignificantlyexacerbated,resulting indefectssuchasheader warpage,terminalcoplanaritymisalignment,andotherdefects,which directlythreatenthereliabilityoftheon-board electronic system.The existing processoptimizationlacks theknowledge ofsystematiccoupling mechanism,therefore,this study focusesonthe multi-fielddynamiccoupling mechanism of the injection molding processof PBT-based connectors, and explores the temperature-flow-stressinteractionlawindepth,withaviewtoprovidinga theoreticalcornerstone forthe manufacturing of high-precisionand high-reliabilityin-vehicle electronic devices.

【Key words】PBT material;automotive smart connector;injection molding;multi-field coupling

0 引言

汽车智能化升级推动域控制器架构高速发展，作为信号传输核心枢纽的车载智能连接器，亟需在微尺度下实现高密度互连的机械稳定性和电接触可靠性。（剩余4325字）