1, incombustible ceramic material is synthesized by powder and water-based adhesive. Usually, powder and glue are mixed and stirred quickly. The specific proportion should be adjusted according to different products. If it is painted on the surface, the glue is about half of the powder. If it is used as a plate, there is more glue than powder. When no other materials are added, when synthesized with powder and rubber, the ratio is about 1 ~ 1.
(1) Specific operation: add a proper amount of water into the powder to make slurry, then inject it into the mold, and use various methods such as vibration, rotation (8-stage motor speed) and vacuum pumping. It is necessary to shape, improve the density, and eliminate bubbles (bubbles generated by the gelation of hydrated gypsum are a congenital weakness), so as to avoid bubbles and cavities on the product surface, so as not to affect the smoothness and beauty of the product surface, and reduce the working time for molding and repairing. If there are some pores and flaws. When demoulding and molding, the consistency of water and powder is greater than that of molding slurry (water consumption is less than 10% of molding slurry) for repair. After plastic repair, it is placed in the dark for 24 hours, preferably 72 hours, and the temperature is not lower than 20℃ to make it naturally whiten and fully react and crystallize. And then move to a drying chamber for dry. The optimum drying temperature of embryo is 70℃ and the drying time is 3-4 hours. Subsequently, the temperature is lowered to about 30℃, and the hydrophobic primer is sprayed or dipped (the ratio with the powder is 100:2) and supplied synchronously). I.e., entering polymerization drying again. Set the temperature at 50 ~ 60°C for no less than 12 hours. After cooling, the texture is like traditional ceramics.
(2) Features: It can be quickly solidified, hardened and dried at normal temperature without baking and drying. Rapid solidification hardens and dries the surface. Curing begins in 30 minutes, surface drying begins in 2 hours, the surface is hard in 1 day, basically dry in 3 days, and completely dry in 10 day. After completely drying, it is very hard, with hardness greater than 6 hours and compressive strength greater than 80MPa. It has the strength of pottery, the appearance of porcelain, and the feeling of stone. The glaze is bright and can't be cut with one knife. The color of the ceramic material is pure white, the glaze material is colorless and translucent, and the surface will be self-setting, smooth, delicate and bright. Adding pigments can make products with different colors and textures.
2. Brush the baking-free porcelain glaze on the dried baking-free ceramic surface for two or three times to make it smooth and bright. Baking-free porcelain glaze, also known as water-based mirror luster, can also be used to brighten, harden, wear-resistant, new and waterproof, rust-proof, anticorrosive, fireproof and protect other inorganic products, building materials, furniture and wood, with good results.
Third, ceramic art Ceramic art is the abbreviation of ceramic art, which is an artistic form that uses ceramic materials as creative media to express modern people's ideals, personalities, emotions, hearts, consciousness and aesthetics in a personalized way. Pottery can be divided into concept pottery, life pottery and environmental pottery.
The basic process of ceramic technology: molding → firing.
Specifically: mud → kneading mud → various molding methods → embryo trimming → embryo drying (drying) → glazing → kiln firing.
4. Non-fired ceramics and non-fired porcelain glaze can be used to make ceramics, which saves the glazing and firing process. However, due to the nature of materials, baking-free ceramics and baking-free porcelain glaze cannot be used for tableware in living pottery.
5. A baking-free ceramic ingredient (mass ratio): 28%-47% magnesium oxide; Sodium chloride: 23% ~ 35%; Fly ash:11%~ 21%; Quartz powder:13% ~15%; Glass fiber:1%~ 2%; Auxiliary agent: 0.5% ~ 2%; Sawdust: 3% ~ 5%.