Effects of surfactant on suspension property of diamond in resin and associativity between diamond and resin
-
摘要: 用KH550硅烷偶联剂和聚电解质型表面活性剂聚乙烯亚胺(PEI)分别对金刚石进行表面改性,研究了KH550和PEI对金刚石表面电性、金刚石在聚酰胺酰亚胺树脂液中的悬浮性及与树脂结合性的影响.结果表明:改性后金刚石表面的电性能发生显著变化,在酸性条件下,zeta电位绝对值明显提高,颗粒间的静电斥力增强,改善了金刚石在树脂液中的悬浮稳定性;改善了树脂对金刚石表面润湿性及其界面结合性,提高了线锯的切割性能;KH550对金刚石的改性效果优于PEI的改性效果.Abstract: The surface modifications of diamond were carried out respectively by KH550 silane coupling and polyelectrolyte type surfactant polyethyleneimine (PEI), the effects of KH550 and PEI on surface potential performance of diamond, suspension property of diamond in polyamide imide resin liquid and associativity of diamond and resin were analyzed.The results show that compared to the original diamond abrasive, the surface electrical behavior of modified diamond changes significantly. Zeta potential of diamond increases observably under acid condition, and increases the repulsive force among particles. So it will improve the suspension stability of diamond in the resin liquid. Both surface wettability of resin to diamond and the interface combination are also improved, thus improving the cutting performance of wire saw. The modification effects of diamond modified by KH550 are better than that of PEI.
-
Keywords:
- surfactant /
- diamond /
- surface modification /
- suspension property /
- associativity
-
-
计量
- 文章访问数: 803
- HTML全文浏览量: 79
- PDF下载量: 567
下载:
