• This product is using silica sol as the main body, made of composite organic polymers and polymer materials special precision casting industry rapid drying model of silica sol, which is mainly used for casting surface layer of shell making technology, compared with ordinary silica sol, has the following characteristics:
1. Method of use of the product in the same with ordinary silica sol process route cases, obviously shortens the drying time, generally in about 2 hours to do the next layer, in the original condition, the drying speed is improved by more than 50%, and improving the production capacity.
2. The product added organic polymer, special additives, characteristics of its prominent in improving the film toughness and coating performance, fast drying, improved the surface layer slurry casting crack, wings, tail and other defects, improve the quality of castings.
3. Shell high wet strength, low residual strength, easy isolation shell, easy alkali proof.
4. This product is made of polymer and alkali, not moldy, no smell, long service life.
5. Paint in a continuous stirred and use of the process, every 2 ～ 3 days should be added the appropriate amount of distilled water to keep the coating viscosity unchanged, not dry, cessation of use shall be stamped with the seal to keep moisture, avoid gel.
• Technical indicators:
Appearance: Milky white liquid.
Solid content(%): ≥30%.
The silica content(%): ≥25%.
Of sodium oxide content(%): 0.2～0.4.
The PH value(Dope): 9～10.5.
The product storage period: six months at room temperature.
Packaging: 250kg plastic bucket, the use must be fully stir, otherwise affect product quality, fail to achieve the desired effect.