Application of water-based glass paint resin:
1. Condensate polishing, industrial feed water treatment (softened water and high purity water preparation), nuclear power plant water treatment;
2. The preparation of sweetener with ultrapure water can remove ash, decolorize and separate chromatography from other special separation and chemical reactions.
Because the resin bond in the binder is in the molten state under the effect of temperature, the fluidity is good, and it is easy to fill all parts of the mold cavity, so the hot pressing pressure is not high, generally 30 ~ 60MPa. It should be pointed out that part of the forming pressure is consumed by the friction resistance of the mold wall, and part of the forming pressure is consumed by the water vapor and volatiles overflowing from the forming process. The constant pressure forming method is difficult to ensure the appropriate pressure, so the mold can not reach the constant density. Therefore, the fixed mold forming method is often used in production, that is, the unit weight of the molding material is fixed, and the thickness of the grinding tool is controlled by the mold size, The applied pressure is to make the die press in place.
Phenolic resin is generally 185 ± 5℃; Polyimide resin is 235 ± 5℃。 If the temperature is too high and the reaction speed is too fast, it is easy to cause molding setbacks, poor adhesion between the matrix and the bond, and sometimes even cracks in the abrasive tools. If the temperature is too low, the pressing time is prolonged and the production power is low.