| 挤出型镀银铝粉/硅橡胶导电复合材料的制备与性能研究 |
| Preparation and properties of silver coated aluminum powder/silicone rubber conductive composites for extrudate |
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| DOI： |
| 中文关键词: 硅橡胶 镀银铝粉 硅烷偶联剂 表面改性 复合材料 导电性能 |
| 英文关键词: silicone rubber silver coated aluminum powder silane coupling agent surface modification composite conductivity |
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| 中文摘要: |
| 研究硅烷偶联剂对镀银铝粉的表面改性及镀银铝粉用量对镀银铝粉/硅橡胶导电复合材料性能的影响。结果表明，采用硅烷偶联剂A-171，A-172和A-187对镀银铝粉进行表面改性后复合材料不交联，而采用硅烷偶联剂A-137和A-151对镀银铝粉进行表面改性后复合材料可以硫化，其中硅烷偶联剂A-151的改性效果较好，最佳用量为15份。随着镀银铝粉用量的增大，复合材料的拉伸强度、拉断伸长率和体积电阻率减小，且出现逾渗现象，高导电复合材料镀银铝粉的最佳用量为280份。 |
| 英文摘要: |
| The surface of silver coated aluminum powder was modified by silane coupling agents and the effects of addition level of the silver coated aluminum powder on the properties of silver coated aluminum powder/silicone rubber conductive composites were investigated.The results showed that，when the silver coated aluminum powder was modified by silane coupling agent A-171，A-172 or A-187，the composites couldn’t be crosslinked，while being modified by silane coupling agent A-137 and A-151，the composites could be cured.The modifying effect of A-151 was better，and the optimum addition level of A-151 was 15 phr.As the addition level of the silver coated aluminum powder increased，the tensile strength，elongation at break and volume resistivity of composites decreased，and the percolation threshold was observed.The optimum addition level of silver coated aluminum powder for high-conductive composite was 280 phr. |
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