导热填料氧化铝的表面处理研究

发布时间：2018-05-19 09:49

本文选题：填料氧化铝 + 表面处理　；参考：《轻金属》2017年06期

【摘要】：本文针对填料氧化铝的表面处理进行了研究,试验选取不同的偶联剂对填料氧化铝进行表面处理,通过吸油值、粘度及扫描电镜对表面处理后的填料氧化铝进行表征,并对偶联剂的表面处理作用及机理进行了初步的探讨。结果表明,偶联剂可以明显的降低填料氧化铝的吸油值,相对于未表面处理的填料氧化铝,经偶联剂A、B、C表面处理后填料氧化铝的吸油值分别下降了7.5%、20%、30%。随着偶联剂C添加量的增加,填料氧化铝的粘度逐渐降低,当偶联剂C的添加量超过0.3%时,其粘度下降趋缓,基本达到平衡。偶联剂C的最佳添加量为0.3%,此时体系粘度为5850MPa·s,相对于未表面处理的填料氧化铝的粘度下降了44%,并且表面处理后的填料氧化铝粉体分散性较好,颗粒无明显团聚现象存在,粉体棱角减少。
[Abstract]:In this paper, the surface treatment of filler alumina was studied. Different coupling agents were selected to treat the surface of filler alumina. The surface of filler alumina was characterized by oil absorption value, viscosity and scanning electron microscope. The surface treatment and mechanism of the coupling agent were also discussed. The results show that the coupling agent can obviously reduce the oil absorption value of the filler alumina. Compared with the untreated filler alumina, the oil absorption value of the filler alumina after the surface treatment of the coupling agent AZB C decreases by 7.55% 20% and 30% respectively. With the increase of coupling agent C, the viscosity of filler alumina decreases gradually. When the content of coupling agent C exceeds 0.3, the viscosity decreases slowly and reaches equilibrium. The optimum addition amount of coupling agent C is 0.3, and the viscosity of the system is 5850MPa s, which decreases by 44% compared with that of the untreated filler alumina, and the dispersion of the filler alumina powder after surface treatment is better, and there is no obvious agglomeration of the particles. The angle of powder is reduced.
【作者单位】：中国铝业郑州有色金属研究院有限公司;
【分类号】：TQ133.1

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