共混比对导电炭黑/天然橡胶/环氧化天然橡胶复合材料电磁性能的影响

材料导报, 2016, 30(10): 38-66. doi: 10.11896/j.issn.1005-023X.2016.10.009

共混比对导电炭黑/天然橡胶/环氧化天然橡胶复合材料电磁性能的影响

李乐凡 ^1, , 赵鹏飞 ^2, , 吕臻 ^3, , 许逵 ^4, , 钟杰平 ^5, , 李思东 ^6, , 彭政 ^7, , 汪志芬 ^8,

1.海南大学材料与化工学院,海口 570288;中国热带农业科学院农产品加工研究所,湛江 524001

2.中国热带农业科学院农产品加工研究所,湛江,524001

3.中国热带农业科学院农产品加工研究所,湛江,524001

4.中国热带农业科学院农产品加工研究所,湛江,524001

5.广东海洋大学理学院,湛江,524088

6.广东海洋大学理学院,湛江,524088

7.中国热带农业科学院农产品加工研究所,湛江,524001

8.海南大学材料与化工学院,海口,570288

基金项目: 海南省自然科学基金项目(20155197) 中国热带农业科学院院本级基本科研业务费专项资金资助项目(1630062014021)

关键词：天然橡胶 , 环氧化天然橡胶 , 导电炭黑 , 共混比 , 电磁性能

Effect of Blend Ratio on the Electromagnetic Property of Conductive Carbon Black/Natural Rubber/Epoxidized Natural Rubber Composites

Keywords： natural rubber , epoxidized natural rubber , conductive carbon black , blend ratio , electromagnetic property

采用机械共混法制备了导电炭黑(CCB)填充天然橡胶(NR)/环氧化天然橡胶(ENR)复合材料,研究了NR/ENR共混比对复合材料微观形貌和电磁性能的影响.扫描电镜结果表明,相比于纯的NR和ENR,CCB在NR/ENR中能形成更优的填料网络结构.随着共混胶中NR含量的增大,复合材料的电磁性能先增强后减弱;当NR/ENR比例为70∶30时,复合材料导电率、介电损耗因子、C波段吸波性能达到最值,分别为0.34 S/m,0.31和-23.15 dB;共混比对复合材料力学性能影响不大,能够满足复合材料在相关领域的应用需求.

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