Silicone And Casting

Six silicone production process

Silicone is one of the most common things we see in our daily lives, but it is very common silicone products
1.Molded
Molded, this production process is the most common. The shape of the mold determines the shape of the silicone products. Molded silicone products are usually made by high-temperature molds with the addition of vulcanizing agent in the solid silicone raw materials through the curing machine to apply pressure. The hardness of molded silicone is usually 30°C-70°C. This is a simple process that is suitable for use in the following applications On all silicone products.

2. Injection (Injection)
This process is a combination of liquid silicone and Plastic with high-quality requirements.
Its products are characterized by better thermal stability, cold resistance, excellent electrical insulation properties, and no toxic substances are produced when burning.
Therefore, it has become an irreplaceable material in the production and design of health products, automobiles, baby products, medical supplies, diving supplies, kitchen utensils, and seals.

3.Extrusion
Extrusion molding, extrusion Guangdong silicone products are usually extruded through the extrusion machine silicone molding, generally extruded silicone shape is long. Tubular can be cut at will, extrusion art made out of single product shape, mostly strip. Silicone tube in the field of medical, mechanical equipment used more widely. Can also be used in the packaging material to play a cache role.

4. Calendering
Silicone rubber is kneaded and mixed with white carbon black, silicone oil, etc. to make a mixed rubber, and then calendered out of the sheet.
The physical and mechanical properties of the film obtained by rolling have obvious differences between longitudinal and transverse, and this phenomenon is the calendering effect. Specifically, the longitudinal tensile strength of the film is greater than the transverse, the transverse tearing elongation of the film is greater than the longitudinal, the longitudinal shrinkage of the film is greater than the longitudinal shrinkage of the film. Horizontal.
The calendering effect is the result of the directional orientation of macromolecules and needle and sheet compound in the rubber material along the calendering process. The size of the calendering effect depends on the composition of the compound, the calendering temperature, speed, and speed ratio.
It is used for larger products, such as silicone film, silicone sheets.

5. Pouring
The operation of irrigation or infusion mold: irrigation or infusion mold, is used for relatively smooth or simple products, no mold line to save labor and time. It is to take the product or model that you want to replicate, surround it with a plastic or glass plate, pour the vacuumed silicone directly on top of the product, and leave it for After the silicone dried and molded, take out the product, the mold is formed (Note: the infusion mold generally uses a softer silicone to make the mold, so that). (It is easy to release the mold, it will not damage the products inside the silicone mold). It is a combination of solid and liquid and can be used in products such as mobile phone covers, luggage covers, etc.

6. Coating
Rapid vulcanization; strong adhesion; good fluidity, easy to defoaming. The use of platinum complexes catalytic, non-toxic, no peculiar smell; excellent thermal stability and cold resistance (use temperature -60 ℃ ~ 200 ℃) molding It has good air permeability, heat resistance, and certain tensile strength;
Excellent anti-slip properties; non-polluting; low hardness; solid adhesive bonding of plant glue. High tear strength; high transparency; good tensile properties. Abrasion-resistant, washable, high temperature resistant, high three-dimensional level, smooth, soft, pliable fabric with excellent texture and good elasticity. Resistant to washing and dry cleaning.
Apply to the above cloth, has the anti-aging effect. For example, silicone gloves, rain shoes, etc.

 

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