| 摘要 |
A silver coating method for glass powder is provided to enhance anti-corrosion and electro-magnetic wave shielding effect of the glass powder and to increase electric conductivity of the glass powder by introducing sensitized glass powder to a solution of silver compound, complexing agent and stabilizer then adding a reducing agent to the mixture. The method comprises the steps of: degreasing glass powder and etching the treated glass powder; sensitizing the treated glass powder; adding the sensitized glass powder to a solution including silver compound, complexing agent and stabilizer then introducing a reducing agent to the mixture within 5 minutes; and carrying out the coating process of the glass powder at 10 to 98deg.C for 5 to 60 minutes. Alternatively, the glass powder is replaced by plastic powder or ceramic powder. The complexing agent is ammonia water and the stabilizer is selected from ammonium bicarbonate and ammonium carbonate. The reducing agent is selected from hydrazine monohydrate, formaline, glucose, sugar alcohol and borohydride. |
