Silicone room temperature two-component mold glue is referred to as RTV-2 mold silica gel, and it can also be a condensation type silica gel. Silicone is generally composed of five components: a base rubber, a crosslinking agent, a catalyst, a filler, and an additive. In theory, as long as the first three components can be made into a condensation type silica gel, in order to obtain a certain strength, "filler" is generally necessary, and "filler" depends on the situation. Typically the gum base, crosslinker and filler are made into one component and the catalyst is used as a separate component. The ratio of the catalyst component to the main component is generally between 1% and 3%, and the speed of the gelation reaction can be adjusted by adjusting the ratio of the catalyst.
Therefore, the market above the Silicone is a condensation type silica gel, but the customer is not called, the product is the same! The common 矽利康 is generally divided into two colors, milky white and translucent. These two models are not only different in color, but also different in price and quality, but the operation process is the same!
The operating procedure of the company: 1. Fix the master to be copied that has been coated with the release agent. 2. Enclose the master mold with a wooden board or other material into a cavity of appropriate size. 3. Mix the two components of the condensed silica gel as required, stir evenly, and defoam under vacuum. 5. Pour the right amount of silica gel mixture into the mold cavity. 7. After the silica gel is cured and does not flow, according to the thickness of the outer mold, a wooden board or rubber sheet of appropriate size around the cavity is sealed to form a cavity having a larger circumference, and the inner cavity plate is removed. 8. Inject a proper amount of gypsum paste into the new cavity to fill the cavity. 9. Remove the cavity plate after the plaster has cured. 10. After the condensation type silica gel can be demolded, the master mold is removed. After the silica gel is completely vulcanized, the mold is completed. The silicone mold is ready for use.
Consult Condensation Silicone Phone Week S Exclusive: hfdd1993! Condensed silicone hardness is 0-30 degrees, the color is translucent and milky white!
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