Thermal, mechanical and flame-retardant properties of crosslinked ethylene vinyl-acetate copolymer /magnesium hydroxide blends by <sup>60</sup>Co irradiation

LI Zhenzhong; HE Wei; ZHANG Wenxiong; QU Baojun

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Thermal, mechanical and flame-retardant properties of crosslinked ethylene vinyl-acetate copolymer /magnesium hydroxide blends by ⁶⁰Co irradiation

研究论文 | 更新时间：2023-03-30

- Thermal, mechanical and flame-retardant properties of crosslinked ethylene vinyl-acetate copolymer /magnesium hydroxide blends by ⁶⁰Co irradiation
- 辐射研究与辐射工艺学报 Vol. 25, Issue 1, Pages: 37-42(2007)
- 作者机构：
  
  1.北京工业大学材料科学与工程学院　北京　100022
  2.中北大学分校高分子材料研究所　太原　030008
  3.中国科学技术大学高分子科学与工程系国家火灾重点实验室　合肥　230026
- 作者简介：
- 基金信息：
  
  山西省青年科技基金(20051014)
- DOI：
  CLC：
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LI Zhenzhong, HE Wei, ZHANG Wenxiong, et al. Thermal, mechanical and flame-retardant properties of crosslinked ethylene vinyl-acetate copolymer /magnesium hydroxide blends by ⁶⁰Co irradiation. [J]. 辐射研究与辐射工艺学报 25(1):37-42(2007)
DOI：

LI Zhenzhong, HE Wei, ZHANG Wenxiong, et al. Thermal, mechanical and flame-retardant properties of crosslinked ethylene vinyl-acetate copolymer /magnesium hydroxide blends by ⁶⁰Co irradiation. [J]. 辐射研究与辐射工艺学报 25(1):37-42(2007) DOI：

摘要

以三羟甲基丙烷三丙烯酸酯为交联助剂, 以,60,Co为辐射源, 对三种不同醋酸乙烯酯 (Vinyl-acetate, VA) 含量的乙烯-醋酸乙烯酯共聚物 (Ethylene vinyl-acetate copolymer, EVA) /氢氧化镁混合材料进行了辐照交联. 通过对凝胶含量、维卡软化点、氧指数、UL-94垂直燃烧和拉伸性能的测试及热重分析, 研究了辐照剂量对EVA/氢氧化镁交联体的交联度、热性能、力学性能和阻燃性能的影响. 研究结果表明: VA含量高的EVA/氢氧化镁交联体更容易产生辐射交联; 辐照交联后的EVA/氢氧化镁复合材料的抗热变形能力、力学性能及阻燃性能都获得明显改善. 热重分析结果表明,60,Co辐射明显影响EVA/氢氧化镁的热氧稳定性.

Abstract

Three types of ethylene vinyl-acetate copolymer (EVA)/magnesium hydroxide (MH) blends were crosslinked by ,60,Co γ-irradiation in the presence of trimethylolpropane triacrylate. The influences of irradiation dose on the crosslinking degree and thermal, mechanical and flame retardant properties of EVA/MH blends were studied through the measurements of gel content, Vicat point, limiting oxygen index (LOI), UL-94, tensile testing and the thermogravimetric analysis (TGA). The test results show that the EVA/MH blend with higher vinyl-acetate content in EVA is easier to be crosslinked. The thermal distortion resistance, mechanical and flame-retardant properties of EVA/MH blends are obviously improved by ,60,Co irradiation. The TGA shows that the thermal stabilities of EVA/MH blends are apparently affected by ,60,Co γ-irradiation.

关键词

γ辐射交联乙烯-醋酸乙烯酯共聚物氢氧化镁阻燃

Keywords

γ-irradiationCrosslinkingEthylene vinyl-acetate copolymerMagnesium hydroxideFlame-retardant

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Suzhou Medical College

Takasaki Radiation Chemistry Research Establishment, Japan Atomic Energy Research Institute

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Thermal, mechanical and flame-retardant properties of crosslinked ethylene vinyl-acetate copolymer /magnesium hydroxide blends by 60Co irradiation

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摘要

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Thermal, mechanical and flame-retardant properties of crosslinked ethylene vinyl-acetate copolymer /magnesium hydroxide blends by ⁶⁰Co irradiation