Forming technology of silica gel products
Forming, this manufacturing process is the most common. Mainly through the cooperation of the mold, the shape of the mold determines the shape of the silicone product. Molding silica gel products are usually made by putting solid silica gel raw materials containing vulcanizing agent into a high-temperature mold, then pressurizing by a vulcanizing machine and curing at high temperature. The hardness of molded silica gel is usually 30 C-70 C. This manufacturing process is relatively simple and suitable for all silica gel products.
Injection technology of silica gel products
This process requires high quality and is a combination of liquid silica gel and plastic. Its products show good thermal stability, cold resistance and excellent electrical insulation performance, and will not produce toxic substances when burning. Therefore, it has become an irreplaceable material in the production design of health care products, automobiles, baby products, medical supplies, diving supplies, kitchen utensils, seals and so on.
Extrusion technology of silica gel products
Extrusion molding, the extruded silica gel products are usually extruded by an extruder. Generally, the extruded silica gel has a long shape and can be cut at will. The shape of products made by extrusion technology is relatively simple, mostly strip-shaped. Silicone tubes are widely used in the fields of medical treatment and mechanical equipment. It can also be used in packaging materials to play a caching role.
Calendering technology of silica gel products
The silicone rubber was kneaded with silica and silicone oil to make a rubber mixture, and then calendered into a sheet. The physical and mechanical properties of calendered films are obviously different in longitudinal and transverse directions, which is the calendering effect. Specifically, the longitudinal tensile strength of the film is greater than the transverse tensile strength, the transverse elongation at break is greater than the longitudinal elongation at break, and the longitudinal shrinkage is greater than the transverse shrinkage. The calendering effect is the result of the orientation of macromolecules and needle-like and flake-like compounding agents in the rubber compound along the calendering direction. The calendering effect is related to the composition of rubber compound, calendering temperature, speed and speed ratio. Used for larger products, such as silica gel board and silica gel board.
Filling technology of silica gel products
Operation method of pouring mold or pouring mold: The pouring mold or pouring mold is used for relatively smooth or simple products, which saves labor and time, and there is no molding line, that is, surround the product or model you want to copy with a rubber plate or a glass plate, pour the evacuated silica gel directly on the product, take out the product after the silica gel is dried and molded, and mold molding (Note: Generally, the pouring mold uses relatively soft silica gel as the mold, so that demoulding is easier and the interior of the silica gel mold will not be damaged.
Coating technology of silica gel products
Rapid vulcanization; Strong adhesion; Good fluidity and easy defoaming. Catalyzed by platinum complex, non-toxic and tasteless; Excellent thermal stability and cold resistance (service temperature -60℃ ~ 200℃), good air permeability, heat resistance and certain tensile strength after molding; Excellent anti-skid performance; Pollution-free; Low hardness; Graft adhesive is firmly bonded. High tear strength; High transparency; Good tensile properties. Wear-resistant, washable and high temperature resistant; The three-dimensional level is high, the fabric is smooth, soft and elastic, with excellent texture, good elasticity, washability and dry cleaning resistance. When coated on cloth, it has anti-aging effect. Such as silicone gloves and rain boots.
The above is the technical knowledge about silicone products technology summarized by the technicians of Shengshi silicone products manufacturers!