Zibo Chihao Aluminum Industry Co., Ltd.
Contact: Manager Tan
Address: Economic Development Zone, Zichuan District, Zibo City, Shandong Province
Surface treatment method of aluminum hydroxide filler
1. Add aluminate coupling agent.
For highly active fillers such as aluminum hydroxide filler, the amount of coupling agent should be increased to 1.5 to 2.5%, and the filler should be stirred and dried in a high-speed mixer for about 10 to 15 minutes, so that the moisture content of the filler is less than 0.3%. Then add the crushed coupling agent slowly, but be careful not to let the coupling agent be beaten to the inner wall of the mixer by the stirring paddle, and its modification time is 3 to 5 minutes.
2. Use a silane coupling agent.
This method is to add aluminum hydroxide filler to the mixer, slowly add the silane coupling agent solution while stirring and continue to stir uniformly, and then dry it, but it should be noted that the silane coupling agent solution is based on the concentration of A silane coupling agent was added dropwise to distilled water at a ratio of 10% and stirred for hydrolysis.
In short, different surface treatment methods should be selected according to different actual conditions, so that the aluminum hydroxide filler can be better treated and thus better used.