When a silane coupling agent solution is used to treat a substrate, a spray method is generally used. Before processing, you need to know the amount of silane and the water content of the filler. The coupling agent is first prepared into a 25% alcohol solution, and then the filler is placed in a high-speed mixer, and the silane coupling agent solution is pumped into a fine mist under stirring. 0.2% -1.5%, treatment can be completed in 20min, and then dried by dynamic drying method.
In addition to alcohols, ketoesters and hydrocarbons can be used as solvents, and formulated to a concentration of 1% -5% (mass fraction). In order to hydrolyze the silane coupling agent, or a part of the hydrolysis solvent, a small amount of water needs to be added, and even a small amount of HOAc can be added as a hydrolysis catalyst, and then the material to be treated is added to the solution under stirring, and then filtered, and The product can be obtained by drying and curing at -120 minutes for several minutes.
The powder filler is treated by a spray method, and a silane coupling agent stock solution or a hydrolysate solution thereof can also be used. When processing metals, glass and ceramics, it is advisable to make a silane coupling agent alcohol solution with a concentration of 0.5% -2.0% (mass fraction), and use dipping, spraying, and brushing methods. According to the shape and performance of the substrate, It can be dried and cured immediately, or it can be kept at 80-180 for 1-5min to achieve dry curing.