Effect of electron beam irradiation on properties of EVA/HDPE blends with intumescent flame retardants

IF 2.8 3区物理与天体物理 Q3 CHEMISTRY, PHYSICAL Radiation Physics and Chemistry Pub Date : 2025-02-28 DOI:10.1016/j.radphyschem.2025.112664

Sangwon Park , Hyun-Rae Kim , Sang-Yun Kang , Seung-Tae Jung , Young-Chang Nho , Jong-Seok Park , Byoung-Min Lee , Jae-Hak Choi

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Abstract

Conventional thermoplastics are widely used as insulating materials in various industrial fields, but various research efforts are being conducted to improve their thermal stability and flame retardancy. In this study, poly(ethylene-co-vinyl acetate) (EVA)/high-density polyethylene (HDPE)/intumescent flame retardants (IFRs) blends were prepared, and changes in properties were investigated according to the IFRs contents and electron beam irradiation conditions. As the content of IFRs increased, the flame retardancy of the blends improved significantly, but mechanical properties deteriorated. Mechanical properties, thermal stability, and flame retardancy were enhanced by electron beam irradiation, attributed to the formation of crosslinked network structures. UL-94 vertical tests results revealed that blends containing more than 50 g of IFRs and irradiated at 100 kGy exhibited a UL-94 V-0 rating. Therefore, the EVA/HDPE/IFRs blends prepared in this study can be applied as insulating materials with excellent thermal stability, mechanical properties, and flame retardancy.

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电子束辐照对膨胀型阻燃剂EVA/HDPE共混物性能的影响

传统热塑性塑料作为绝缘材料广泛应用于各种工业领域，但人们正在进行各种研究以提高其热稳定性和阻燃性。本研究制备了聚乙烯醇-醋酸乙烯酯(EVA)/高密度聚乙烯(HDPE)/膨胀型阻燃剂（IFRs）共混物，研究了IFRs含量和电子束辐照条件对阻燃剂性能的影响。随着ifr含量的增加，共混物的阻燃性显著提高，但力学性能下降。由于形成交联网络结构，电子束辐照增强了材料的机械性能、热稳定性和阻燃性。UL-94垂直测试结果显示，含有超过50克ifr的混合物在100 kGy照射下显示出UL-94 V-0等级。因此，本研究制备的EVA/HDPE/IFRs共混物具有优异的热稳定性、力学性能和阻燃性，可作为绝缘材料应用。

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来源期刊

Radiation Physics and Chemistry 化学-核科学技术

CiteScore

5.60

自引率

17.20%

发文量

574

审稿时长

12 weeks

期刊介绍： Radiation Physics and Chemistry is a multidisciplinary journal that provides a medium for publication of substantial and original papers, reviews, and short communications which focus on research and developments involving ionizing radiation in radiation physics, radiation chemistry and radiation processing. The journal aims to publish papers with significance to an international audience, containing substantial novelty and scientific impact. The Editors reserve the rights to reject, with or without external review, papers that do not meet these criteria. This could include papers that are very similar to previous publications, only with changed target substrates, employed materials, analyzed sites and experimental methods, report results without presenting new insights and/or hypothesis testing, or do not focus on the radiation effects.