Calendering
The silicone rubber is kneaded, mixed with silica, silicone oil, etc. to make a mixed rubber, which is then rolled out with a calender.
The longitudinal and transverse physical and mechanical properties of the films prepared by the calendering method are obviously different, which is the calendering effect. Specifically, the tensile strength in the longitudinal direction of the film is greater than that in the transverse direction, the elongation at break in the transverse direction of the film is greater than that in the longitudinal direction, and the shrinkage in the longitudinal direction of the film is greater than that in the transverse direction.
The calendering effect is the result of the orientation of macromolecules, needle-like and flake-like compounds along the calendering direction during the calendering process. The calendering effect is related to the composition of the compound, calendering temperature, speed ratio and other factors.
For larger products, such as silicon wafers, silicone rubber sheets, etc.
Perfusion
The operation method of filling or pouring mold: pouring mold or pouring mold is used for relatively smooth or simple products, no mold line saves manpower and time, that is, the product or model you want to reproduce is surrounded by rubber or glass plates, which are passed through a vacuum pump The outgoing silica gel is poured directly into the product. After the silica gel is dried and formed, the product is taken out to form a mold (Note: The perfusion mold is generally made of silica gel with relatively soft hardness, so that it is easier to demould and will not damage the products in the silicone mold). It belongs to the combination of solid and liquid, and is used for mobile phone sets, luggage sets and other products.
Coating
Fast vulcanization; strong adhesion; good fluidity and easy defoaming. The catalyst of platinum complex is non-toxic and tasteless, and has good air permeability, heat resistance and certain tensile strength after molding (use temperature -60℃～200℃).
Excellent non-slip properties; no pollution; low hardness; strong adhesion. High tear; high transparency; good tensile properties. Wear resistance, washing resistance, high temperature resistance; high three-dimensional level, smooth, soft, good elasticity. Resistant to water washing and dry cleaning.
Suitable for fabrics with anti-aging properties, such as silicone gloves, rain boots, etc.