Active zinc oxide is widely used in rubber, paint, coating, printing and dyeing, glass, pharmaceutical, chemical and ceramic industries. This is already well understood and recognized by all walks of life, but in some special cases, the surface modification of active zinc oxide is required, mainly to better enable active zinc oxide to be applied to various industries.
The main purpose of the surface modification of active zinc oxide: the active powder material has a much larger specific surface area than the ordinary powder, and the control of the modification process and the amount of the modifier is quite different from that of the ordinary powder material. One point is well reflected in this experiment. In this paper, the main conditions of the modification process were studied experimentally, and the powders before and after modification were characterized and analyzed. The modified active zinc oxide is uniformly incorporated into the polyurethane to achieve good mixing with the organic polymer.
What are the main operating methods and methods for active zinc oxide in the surface modification process? The main method is the amount of modifier, modification time, modification temperature, and the modification equipment used (usually using agitation methods such as stirring speed). The effect of the surface modification, after surface modification, in the actual application, we can see that the actual effect has changed a lot, such as the sterilization effect of active zinc oxide, the previous data is 1.0, After the surface modification, the modified zinc oxide after the modification treatment was smoothly added to the polyurethane. This indicates that the active zinc oxide can be surface-modified with a titanate coupling agent, which greatly improves the sterilization effect.
Surface-modified active zinc oxide aqueous dispersion, preparation method and use thereof, and hope to have more relevant knowledge in the modification and preparation of active zinc oxide, including: 0.1-10% active zinc oxide; 0.06 ～10% hydrated SiO2, 0.12-20% hydrated Al2O3 or 0.05-10% hydrated Fe2O3; 0.1-10% silane coupling agent; 0.2-9% water-soluble polymer; the rest is water.
The aqueous dispersion of the present invention is obtained by depositing hydrated SiO2, hydrated Al2O3 or hydrated Fe2O3 onto the surface of the active zinc oxide, and then uniformly mixing with a silane coupling agent, a water-soluble polymer and water. In the aqueous dispersion of the invention, the dispersion of active zinc oxide is uniform and stable, and the agglomeration between the active zinc oxide particles is effectively prevented.