| 硅橡胶基高导电复合材料的制备及其性能研究 |
| Preparation and Properties of High Conductive Composites Based on Silicone Rubber |
| 投稿时间：2022-05-09 修订日期：2022-05-09 |
| DOI：10.12136/j.issn.1000-890X.2023.07.0483 |
| 中文关键词: 甲基乙烯基硅橡胶 导电复合材料 导电炭黑 片状微米银 碳纳米管 电导率 |
| 英文关键词: MVQ conductive composite conductive carbon black flake micron silver carbon nanotube conductivity |
| 基金项目:国家重大基础研究项目 |
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| 中文摘要: |
| 以导电炭黑、片状微米银、碳纳米管为填料制备甲基乙烯基硅橡胶（MVQ）基高导电复合材料并研究其性能。结果表明：导电炭黑在MVQ中的逾渗阈值为8～12份（对应体积分数为3. 33%～4. 92%），导电炭黑用量为12份时导电炭黑/MVQ复合材料的交联网络最稳定；在添加12份导电炭黑的基础上添加150份片状微米银时，导电炭黑/片状微米银/MVQ复合材料在50%应变下的导电网络恢复程度最大；导电炭黑/片状微米银/碳纳米管/MVQ复合材料在50%应变下的电导率为1. 2×104 S·m-1，电导率变化率为18%。 |
| 英文摘要: |
| High conductive composites based on methyl vinyl silicone rubber（MVQ） were prepared using conductive carbon black，flake micron silver and carbon nanotube as fillers，and their properties were studied. The results showed that the percolation threshold of conductive carbon black in MVQ was 8～12 phr （3. 33%～4. 92% of volume fraction）. When the dosage of conductive carbon black was 12 phr，the cross-linking network of conductive carbon black/MVQ composite was the most stable. When adding 150 phr flake micron silver on the basis of 12 phr conductive carbon black，the conductive network recovery of conductive carbon black/flake micron silver/MVQ composite at 50% strain was the largest. At 50% strain，the conductivity of conductive carbon black/flake micron silver/carbon nanotube/MVQ composite was 1. 2×104 S·m-1，and the conductivity change rate was 18%. |
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