Sodium tripolyphosphate for ceramic glaze can improve the thixotropy of the glaze and improve the wettability
Editor：川东化工Time：2020-04-29Hits：
There is an important process glaze in the production of ceramics. The glaze is mainly composed of barren raw materials. The fineness of the glaze slurry directly affects the consistency and suspension of the glaze slurry, and also affects the adhesion of the glaze slurry to the glaze and the melting of the glaze. Temperature, as well as the performance of the glaze after firing and the quality of the glaze. The performance of various raw materials varies greatly, so the glaze usually needs to add sodium tripolyphosphate to stabilize the performance of the glaze slurry and prevent the glaze slurry from settling and delamination.
Generally speaking, with proper fineness, the finer the glaze slurry, the better the suspension of the slurry; the melting temperature of the glaze decreases accordingly; the glaze blank adheres closely and the two fully react with each other, so the glaze layer structure is improved and the quality is improved. But too thin glazes also have defects. Too thick glaze slurry is too thick, it is easy to form too thick glaze layer when dipping glaze. Moreover, it is difficult to remove the residual slurry when the blank is taken out of the glaze, which causes partial glaze accumulation. The glaze layer cracks when dried, and the glaze layer shrinks or falls off after firing.
With a moderate proportion of glaze slurry. For glazes of the same composition, the specific gravity of the glaze slurry refers to the concentration of the slurry, and therefore also plays a decisive role in the glazing speed and the thickness of the glaze layer.
The crushed glaze frit mixture and ball mill raw materials are rarely used directly in the glazing process, because the rheology of the glaze suspension is bound to be affected by the particle size of several components, and these fluidities often Influence and change.
Therefore, to ensure the thickness of the glaze and the uniformity of the glaze layer, it is necessary to add sodium tripolyphosphate to control the viscosity of the glaze slurry, improve the thixotropy of the glaze, overcome the glaze precipitation, improve the wettability, and control the drying Time and increase the strength of the glaze layer of the blank.
The viscosity and fluidity of the glaze slurry are affected by the various components in the raw material system. Only by considering each component and its mutual influence can the best dilution and dispersion effects be obtained.
At the same time, sodium tripolyphosphate is an important glaze additive in the production of ceramics. It has good degumming, dispersibility and color development properties. Under the ever-changing market competition, products with cost-effective and market effects will be obtained. The ceramic grade sodium tripolyphosphate produced by Chuandong Chemical Group occupies a dominant position in the ceramic market and is supported by more than 20 internal control standards. Customers must choose a professional manufacturer when choosing sodium tripolyphosphate, so as to achieve both economical also reasonable.
