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<p>Styrene–ethylene–butylene–styrene (SEBS) block copolymer exhibits high elasticity and easy processability, but its lack of an internal cross-linked structure limits its wear resistance and resilience. This study investigates the modification of SEBS-based elastomers using electron beam irradiation, with triallyl isocyanurate (TAIC) as a cross-linking agent. The effects of radiation intensity and TAIC dosage on the mechanical properties, surface characteristics and wear resistance of the elastomers were examined. Results revealed that a TAIC dosage of 6 wt.% and an irradiation intensity of 120&#xa0;kGy resulted in optimal mechanical performance, with a tensile strength of 9.8 ± 0.4&#xa0;MPa and resilience of 40.2%. The wear rate decreased to 0.39&#xa0;g/1000r, and the water contact angle of the modified elastomers decreased to 81.04°, indicating enhanced polarity. These results demonstrate that electron beam irradiation is an effective method for improving the properties of SEBS-based elastomers, thereby expanding their potential for industrial applications.</p>

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Reinforced SEBS-Based Thermoplastic Elastomers Modified by Electron Beam Irradiation

  • 期刊论文

  • 发表日期：

    2025年11月11日

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  • Wentong Gao,
  • Wei Cao,
  • Tao Yang,
  • Yuanquan Yue,
  • Hui Yu,
  • Bing Han

摘要

Styrene–ethylene–butylene–styrene (SEBS) block copolymer exhibits high elasticity and easy processability, but its lack of an internal cross-linked structure limits its wear resistance and resilience. This study investigates the modification of SEBS-based elastomers using electron beam irradiation, with triallyl isocyanurate (TAIC) as a cross-linking agent. The effects of radiation intensity and TAIC dosage on the mechanical properties, surface characteristics and wear resistance of the elastomers were examined. Results revealed that a TAIC dosage of 6 wt.% and an irradiation intensity of 120 kGy resulted in optimal mechanical performance, with a tensile strength of 9.8 ± 0.4 MPa and resilience of 40.2%. The wear rate decreased to 0.39 g/1000r, and the water contact angle of the modified elastomers decreased to 81.04°, indicating enhanced polarity. These results demonstrate that electron beam irradiation is an effective method for improving the properties of SEBS-based elastomers, thereby expanding their potential for industrial applications.