利用DBD等离子体处理技术制备Fe3O4/云南松磁性复合材料

摘要

The surface of Pinus yunnanesis Franch was treated by DBD cold plasma, and then it was immersed in the magnetic nano-Fe3O4 solution. The effects of different immersion times of on Fe3O4 nano-materials deposition at the treated wood were studied. The changes in morphology and chemical composition on the treated wood surface after immersed five times were investigated by adopting SEM and FIR spectra, and the treated wood’s electromagnetic shielding effects was also tested. The results show that by treating with DBD cold plasma, the treated P. yunnanesis wood could be deposited Fe3O4 nano-materials on the surface, and the deposition amount of Fe3O4 nano-materials were related to the times of immersion;in the tests, the optimum process was as follows:the wood was immersed 5 times, lasted 20 minutes each time, and the Fe3O4/Yunnan pine composites obtained had good electromagnetic shielding effects.%采用空气介质阻挡放电（DBD）冷离子体处理云南松木材表面，然后浸泡在带有负电荷的Fe3O4纳米材料溶液中，研究了不同沉积次数对松木表面Fe3O4纳米材料沉积量的影响。采用扫描电镜和红外光谱测试了沉积5次的松木表面的形貌和化学成分变化，并测试其电磁屏蔽效果。结果表明：经空气DBD冷等离子体处理后的松木表面可以沉积Fe3O4纳米材料，松木表面Fe3O4纳米材料的沉积量与沉积次数有关，本研究中沉积5次，每次20 min，效果较好，沉积了Fe3O4纳米材料的松木具有明显的电磁屏蔽效果。