化工学报 ›› 2011, Vol. 62 ›› Issue (5): 1466-1470.

• 材料化学工程与纳米技术 • 上一篇    下一篇

高强度微孔化三元乙丙橡胶泡沫材料的研制

谢续兵,高小铃,许云书,徐光亮   

  1. 1中国工程物理研究院核物理与化学研究所,四川 绵阳 621900;2西南科技大学材料科学与工程学院,四川 绵阳 621010
  • 出版日期:2011-05-05 发布日期:2011-05-05

Fabrication of microporous EPDM foam with high strength

XIE Xubing1,2GAO Xiaoling1XU Yunshu1XU Guangliang2   

  • Online:2011-05-05 Published:2011-05-05

摘要:

采用辐射化学法制备了纳米SiO2填充的三元乙丙橡胶泡沫材料,并对材料进行了后辐射交联处理。扫描电镜结果表明,纳米SiO2用量是影响三元乙丙橡胶泡沫微孔化的关键因素,加入纳米SiO2后,泡孔的分布均匀性提高,胞体直径减小,在SiO2用量为30 phr时胞体直径降至13 μm;力学测试结果表明,随着纳米SiO2用量的增加,材料的拉伸强度逐渐提高;断裂伸长率则先增加后减小,并在用量为30 phr时出现最大值。后辐射交联处理后,与未作后辐射交联试样对比,材料的拉伸强度与断裂伸长率均得到大幅提高。

关键词: FONT-SIZE: 10.5pt, mso-bidi-font-size: 11.0pt, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-fareast-font-family: 宋体" lang=EN-US>EPDMFONT-SIZE: 10.5pt, mso-bidi-font-size: 11.0pt, mso-ascii-font-family: Times New Roman, mso-hansi-font-family: Times New Roman, mso-bidi-font-family: Times New Roman, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA">;微孔;高强度;纳米二氧化硅;辐射交联

Abstract:

EPDM foam filled with nano-SiO2 was prepared by the radiation chemistry method, and such material was processed by post radiation crosslinking.SEM results indicated that the content of nano-SiO2 was a key factor in microporous EPDM foam.After adding nano-SiO2, the pore distribution became good and the cell diameter decreased.The cell diameter was only 13 μm when SiO2 content was 30 phr.With increasing nano-SiO2 contenttensile strength was improved, and elongation at break increased first and then decreased.There was a maximum value when nano-SiO2 content was 30 phr.Through post radiation crosslinking, tensile strength and elongation of microporous EPDM became obviously better than that without post radiation crosslinking.

Key words: FONT-SIZE: 10.5pt, mso-bidi-font-size: 11.0pt, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-fareast-font-family: 宋体" lang=EN-US>EPDMFONT-SIZE: 10.5pt, mso-bidi-font-size: 11.0pt, mso-ascii-font-family: Times New Roman, mso-hansi-font-family: Times New Roman, mso-bidi-font-family: Times New Roman, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA">;微孔;高强度;纳米二氧化硅;辐射交联