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| 表面活性剂对玻璃微珠镀银微观结构及性能影响 |
| Effect of surfactants on the microstructure and properties of silver coated glass beads |
| 投稿时间：2023-03-24 |
| DOI： |
| 中文关键词: 电磁屏蔽 玻璃微珠 镀银 表面活性剂 硅烷偶联剂 微观结构 性能 |
| 英文关键词: electromagnetic shielding glass beads silvering surfactant silane coupling agent microstructure property |
| 基金项目:河南省科技厅科技攻关项目(232102220100)；河南省高等学校重点科研项目(21B510003)；南阳市科技计划项目(KJGG022) |
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| 中文摘要: |
| 利用硅烷偶联剂KH792对小粒径玻璃微珠(GMs)表面进行修饰改性，以葡萄糖为还原剂，通过化学镀法制得玻璃微珠镀银(GMs@Ag)复合粒子，探讨了不同类型表面活性剂对样品物相、微观结构、外观及电性能的影响。将该复合粒子作为导电填料，制备柔性电磁屏蔽织物，对样品的电磁屏蔽性能进行了测试。结果表明:添加聚乙烯吡咯烷酮(PVP)和阿拉伯树胶(AG)复合表面活性剂制备的GMs@Ag镀层致密、均匀、连续，粉末电阻率值为12.4 mΩ.cm，在其添加量为70%，在电磁波频率为30~1500 MHz下，涂层的电磁屏蔽效能可达到40 dB以上，有一定的应用前景。 |
| 英文摘要: |
| After surface-modified with silane coupling agent (KH792), small-sized glass microbeads (GMs) were coated with silver by using electroless plating technique with glucose as reducing agent to produce composite particles GMs@Ag. The effects of different surfactants on the phase, microstructure, appearance and electrical properties of the samples were investigated. The composite particles were used as conductive filler to prepare flexible electromagnetic shielding fabric, and the electromagnetic shielding performance was tested. The results show that when the composite surfactants of polyvinylpyrrolidone and acacia was added, the resulting GMs@Ag coating was compact, uniform and continuous with a powder resistivity of 12.4 mΩ.cm. With 70% of the addition amount, the electromagnetic shielding efficiency of the coating could reach more than 40 dB, showing a potential for application in electromagnetic shielding field. |
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