辐射研究与辐射工艺学报2026，Vol.44Issue(4)：43-57,15.DOI:10.11889/j.1000-3436.2026-0054
电子束辐照对炭黑填充聚醚型热塑性聚氨酯结构及其性能的影响
Effects of electron beam irradiation on the structure and properties of carbon black-filled polyether-based thermoplastic polyurethane
摘要
Abstract
Carbon black-filled polyether-based thermoplastic polyurethane was modified by electron beam(EB)irradiation at absorbed doses of 0 kGy,10 kGy,25 kGy,and 50 kGy.The dose-dependent variations in microstructure,thermal transitions,dynamic mechanical properties,and wear resistance were systematically investigated using attenuated total reflectance Fourier transform infrared spectroscopy(ATR-FTIR),differential scanning calorimetry(DSC),dynamic mechanical analysis(DMA),tensile testing,tribological testing,and scanning electron microscopy(SEM).The results demonstrated that EB irradiation predominantly induced crosslinking within the investigated dose range.With increasing dose,tensile strength improved from 41.70 MPa to 48.46 MPa,while elongation at break increased from 800%to 840%.DSC analysis revealed that both the melting and crystallization temperatures increased with increasing dose,while the melting enthalpy initially decreased and then increased,indicating a non-monotonic effect of irradiation on crystallization behavior,with enhanced thermal stability of ordered structures at high doses.DMA results showed that the 25 kGy sample exhibited the highest rubbery plateau modulus and apparent crosslink density,suggesting optimal comprehensive thermomechanical performance.Notably,the 50 kGy sample demonstrated the lowest wear rate and friction coefficient,representing superior wear resistance.These findings indicate that EB irradiation effectively tailors the structure and properties of carbon black-filled polyether-based TPU:25 kGy is optimal for applications requiring balanced mechanical and thermomechanical properties,whereas 50 kGy is preferable for wear resistance-critical scenarios.This study provides experimental evidence supporting the application of EB-irradiated polyether-based TPU in advanced cable sheaths,automotive components,and related fields.关键词
电子束辐照/聚醚型热塑性聚氨酯/交联/力学性能/耐磨性能Key words
Electron beam irradiation/Polyether-based thermoplastic polyurethane/Crosslinking/Mechanical properties/Wear resistance分类
化学化工引用本文复制引用
黄志良,梁明晖,冯仕博,刘宇豪,李义浩,董春雷..电子束辐照对炭黑填充聚醚型热塑性聚氨酯结构及其性能的影响[J].辐射研究与辐射工艺学报,2026,44(4):43-57,15.基金项目
安徽省高校理工科教师赴企业挂职实践计划项目(2025jsqygz005)和安徽省教育厅自然科学研究重点项目(2025AHGXZK30012) Supported by Anhui Province University Science and Engineering Teachers Enterprise Secondment Practice Program Project(2025jsqygz005)and Key Project of Natural Science Research of Anhui Provincial Department of Education(2025AHGXZK30012) （2025jsqygz005）
