泡沫密度对乙烯-乙酸乙烯酯橡胶发泡材料压缩性能及动态力学性能的影响

以乙烯-乙酸乙烯酯橡胶（EVM）为基体,过氧化二异丙苯（DCP）为硫化剂、偶氮二甲酰胺（AC）为发泡剂,制备了不同泡沫密度的EVM发泡材料,研究了EVM混炼胶的硫化及发泡特性,采用体视显微镜表征了发泡材料的微观形貌,并考察了泡沫密度对发泡材料的压缩性能及动态力学性能的影响.结果表明,当DCP选用6份、AC选用3.5份时有利于EVM进行发泡;随着泡沫密度的增加,EVM发泡材料的泡壁逐渐变厚;低密度EVM发泡材料的线性弹性阶段范围较大,随着泡沫密度的增加,EVM发泡材料的应力增大,压缩过程中的线性弹性区逐渐变窄;泡沫密度对EVM发泡材料的玻璃化转变温度、阻尼因子（tanδ）峰值几乎没有影响;随着泡...

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Bibliographic Details
Published in合成橡胶工业 Vol. 37; no. 3; pp. 204 - 207
Main Author 王鹤 丁莹 赵树高 史新妍
Format Journal Article
LanguageChinese
Published 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 2014
Subjects
乙烯-乙酸乙烯酯橡胶
动态力学性能
压缩性能
发泡
密度
硫化特性
foaming
density
dynamic mechanical property
乙烯-乙酸乙烯酯橡胶
动态力学性能
压缩性能
ethylene-vinyl acetate rubber
发泡
硫化特性
curing characteristics
密度
compressive property
Online AccessGet full text
ISSN1000-1255

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Summary:以乙烯-乙酸乙烯酯橡胶（EVM）为基体,过氧化二异丙苯（DCP）为硫化剂、偶氮二甲酰胺（AC）为发泡剂,制备了不同泡沫密度的EVM发泡材料,研究了EVM混炼胶的硫化及发泡特性,采用体视显微镜表征了发泡材料的微观形貌,并考察了泡沫密度对发泡材料的压缩性能及动态力学性能的影响.结果表明,当DCP选用6份、AC选用3.5份时有利于EVM进行发泡;随着泡沫密度的增加,EVM发泡材料的泡壁逐渐变厚;低密度EVM发泡材料的线性弹性阶段范围较大,随着泡沫密度的增加,EVM发泡材料的应力增大,压缩过程中的线性弹性区逐渐变窄;泡沫密度对EVM发泡材料的玻璃化转变温度、阻尼因子（tanδ）峰值几乎没有影响;随着泡沫密度的增加,在玻璃态下EVM发泡材料的储能模量（G＇）和tanδ不断增大,而在高弹态下G＇增大,但tan δ减小.
Bibliography:WANG He,DING Ying,ZHAO Shu-gao,SHI Xin-yan（ Key Laboratory of Rubber-Plastics of Ministry of Education,Qingdao University of Science ＆ Technology, Qingdao 266042, China;）
62-1036/TQ
The ethylene-vinyl acetate rubber（EVM） foams with different densities were prepared with dicumyl peroxide （DCP） as vulcanizing agent,azodicarbonamide （AC） as blowing agent,the curing and foaming characteristics of the EVM compounds were studied,the microscopic morphology of the foams was observed by stereomicroscope,and the influences of foam density on the compressive and dynamical mechanical properties of the foams were investigated.The results showed that the EVM compound had a good foaming property with 6 phr DCP and 3.5 phr AC.Besides,the EVM foams with low density showed a broad linear elasticity region during compression process.When the foam density increased,pore wall thickness gradually increased,the linear elasticity region of the EVM foams narrowed,and the stress increased.And the EVM foam density had litter effect on th
ISSN:1000-1255