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文章编号： 16726987（2018）03009706； DOI： 10.16351/j.16726987.2018.03.016
孙琰， 戴欣汝， 魏伟， 王硕， 张昕， 张振秀*
(青岛科技大学 橡塑材料与工程教育部重点实验室，山东 青岛 266042)
摘要： 以乙烯醋酸乙烯共聚物（EVA）为原料，采用电子束辐射交联技术对其进行辐照交联，以氮气（N2）为发泡剂，采用间歇式的物理发泡工艺对其进行发泡。研究了辐射剂量、发泡温度对EVA微孔发泡性能的影响。结果表明：随着辐射剂量的增加，EVA发泡材料的交联密度增加；拉伸强度和硬度增大，拉断伸长率、发泡倍率、回弹性和压缩永久变形减小；在相同辐射剂量下，随着发泡温度的升高，发泡材料的拉伸强度和硬度减小，拉断伸长率、发泡倍率、回弹性和压缩永久变形增加。通过扫描电镜观察，随着辐射剂量的增加，发泡材料的泡孔尺寸减小，泡孔均匀性变差；且随着发泡温度的增加，发泡材料的泡孔尺寸增大，泡孔均匀性变好。
关键词： 乙烯醋酸乙烯共聚物（EVA）； 辐射交联； 微孔发泡
中图分类号： O 632.5文献标志码： A
引用格式：孙琰， 戴欣汝， 魏伟， 等. 辐射交联对乙烯醋酸乙烯共聚物微孔发泡性能的影响\[J\]. 青岛科技大学学报（自然科学版）， 2018， 39（3）： 97102.
SUN Yan, DAI Xinru, WEI Wei, et al. Effect of radiation crosslinking on properties of microcellular EVA foaming\[J\]. Journal of Qingdao University of Science and Technology（Natural Science Edition), 2018, 39(3)： 97102.
Effect of Radiation Crosslinking on Properties of Microcellular EVA Foaming
SUN Yan, DAI Xinru, WEI Wei, WANG Shuo, ZHANG Xin, ZHANG Zhenxiu
(Key Laboratory of RubberPlastics, Ministry of Education, Qingdao University of Science and Technology, Qingdao 266042, China)
Abstract: EVA vulcanization was carried out by using electron beam radiation crosslinking technology, and EVA foam was prepared by pressurequench method and using N2 as blowing agent. The influences of irradiation dose and foaming temperature on the cell structure and physicmechanical properties of EVA foam were investigated. The results showed that the crosslinking density, the tensile strength and the hardness of EVA foam increased with the increase of radiation dose, whereas the elongation at break, expansion ratio, the resilience and the compression set decreased. SEM results showed the cell size of EVA foam decreased and the uniform cell structure became worse with the increase of the radiation dose. With the increase of foaming temperature, the elongation at break, the resilience, the expansion ratio and the compression set increased, however, the tensile strength and the hardness decreased. The cell structure was uniform and the cell size increased with the increase of foaming temperature.
Key words: ethylenevinyl acetate copolymer; radiation crosslinking; microcellular foaming
收稿日期： 20170218
基金项目： 国家自然科学基金项目（51273098）.
作者简介： 孙琰(1993—)，男，硕士研究生.*通信联系人.
