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2222材料工程  2021, Vol. 49 Issue (3): 100-106    DOI: 10.11868/j.issn.1001-4381.2019.001215
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
白炭黑粒子对三元乙丙橡胶硫化性能、黏弹性及泡孔结构的影响
文华银1, 张文焕2, 刘涛2, 罗世凯1,2
1. 西南科技大学 材料科学与工程学院, 四川 绵阳 621010;
2. 中国工程物理研究院 化工材料研究所, 四川 绵阳 621900
Effect of silica particles on vulcanization performance, viscoelasticity and cell structure of EPDM
WEN Hua-yin1, ZHANG Wen-huan2, LIU Tao2, LUO Shi-kai1,2
1. Material Science and Engineering College, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China;
2. Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621900, Sichuan, China
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摘要 采用4种不同种类的白炭黑粒子(A200,H2000,R812S,T36-5)分别作为三元乙丙橡胶(EPDM)的增强填料,并通过超临界CO2发泡法制备具有微孔结构的EPDM泡沫材料。通过扫描电子显微镜和橡胶加工分析仪对不同白炭黑/EPDM基体的黏弹性、硫化性能及泡孔结构等进行测试和表征。结果表明:以气相法白炭黑(A200,H2000,R812S)作为增强填料的EPDM基体流变性能好,利于形成泡孔结构,且泡孔密度随交联度的提高而增加。而以沉淀法白炭黑T36-5作为增强填料的EPDM基体的模量和黏度过高,只在较窄的预硫化区间内形成泡孔结构。其中以白炭黑A200作为增强填料的EPDM基体在不损失良好流变性能的前提下仍能够获得较高的交联度,且A200能够提供更好的异相成核作用,明显提高泡孔密度,减小泡孔尺寸。
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文华银
张文焕
刘涛
罗世凯
关键词 白炭黑三元乙丙橡胶橡胶泡沫超临界CO2    
Abstract:Four different types of silica particles (A200, H2000, R812S, T36-5) were used as reinforcing fillers for EPDM to prepare microcellar EPDM foams by supercritical CO2. The viscoelasticity, vulcanization and cell structure of different silica were tested and characterized by scanning electron microscope and rubber processing analyzer. The results show that the EPDM matrix has good rheological property with fumed silica (A200, H2000, R812S) as reinforcing filter, which is conducive to the formation of cell structure and the cell density is increased with the increase of the degree of crosslinking. The modulus and viscosity of the EPDM matrix with silica T36-5 matrix as the reinforcing filler by using precipitation method are too high, therefore the cell structure is formed only in narrow pre-vulcanization interval. Among them, the EPDM matrix with silica A200 as the reinforcing filler can obtain a high degree of cross-linking without losing good rheological properties, and A200 can provide better heterogeneous nucleation, and significantly improve cell density and reduce cell size.
Key wordssilica    ethylene-propylene-diene-monomer    rubber foam    supercritical carbon dioxide
收稿日期: 2019-12-26      出版日期: 2021-03-20
中图分类号:  TB324  
基金资助:国家自然科学基金(51773186)
通讯作者: 刘涛(1979-),男,副研究员,博士,主要从事硅橡胶及其多层泡沫材料,纤维增强材料等方面的研究,联系地址:四川省绵阳市中国工程物理研究院化工材料研究所(621900),E-mail:liutao_caep@163.com     E-mail: liutao_caep@163.com
引用本文:   
文华银, 张文焕, 刘涛, 罗世凯. 白炭黑粒子对三元乙丙橡胶硫化性能、黏弹性及泡孔结构的影响[J]. 材料工程, 2021, 49(3): 100-106.
WEN Hua-yin, ZHANG Wen-huan, LIU Tao, LUO Shi-kai. Effect of silica particles on vulcanization performance, viscoelasticity and cell structure of EPDM. Journal of Materials Engineering, 2021, 49(3): 100-106.
链接本文:  
http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2019.001215      或      http://jme.biam.ac.cn/CN/Y2021/V49/I3/100
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