Soft RTV2 Tin Cure Liquid Silicone Rubber for Crafts Mould Making
MCSIL-20 series silicone rubbers are tin-cured (also known as condensation cure), room-temperature curing silicones. Molds made from these rubbers exhibit high tear strength, good release properties, and resistance to high temperatures.
Application of Tin cured liquid silicone rubber
reproduction of statues, serial reproduction of complex resin products (polyester, polyurethane and epoxy), plaster, natural and synthetic wax, cement(for example, statues, decorative garden elements, decorative candles, prototypes, decorative ceramics, rosettes, frames, imitation wood friezes, etc.). Molds for technical articles.
Using instruction:
How to make the silicone mold?
The surface of the original should be clean and free of loose material. If your products with thin flower patterns, and especially with porous substrates, please use a suitable mold release agent such as soap water, detergent, Vaseline or petroleum jelly.
Mixing
Please weight 100 Part A base and 2 parts of Curing Agent in a clean container. Thoroughly stir Part A base silicone before use, as filler separation may occur upon prolonged storage. Mixing Part A and Part B evenly until the CA30 completely dispersed in the base. Hand or mechanical mixing can be used, but do not for an extended period of time or allow the temperature to exceed 35C (95F). Mix suitably small quantities to ensure thorough mixing of base and curing agent. It is strongly recommended that entrapped air be removed in a vacuum chamber, allowing the mix to completely expand and then collapse. After a further 1-2 mins under vacuum, the mix should be inspected and can be used if free of air bubbles. A volume increase of 3-5 times will occur on vacuum de-airing the mixture. So a suitably large container should be chosen.
Pouring the mixture and curing
Pour the mixed Part A base silicone and part B the curing agent as soon as possible onto the original, avoiding air entrapment. The catalyzed material will cure to a flexible rubber within 6 hours (or faster by different mixing ratio or room temperature), we advice you de-mold after 24 hours, it is will improve the replicate times of silicone mold.
Storage and Precautions of RTV-2 mold making silicone:
RTV-2 mold making silicone, which is an environmentally-friendly liquid silicone product, is not easy to burn and can be stored and transported as non-hazardous goods. The shelf life of the product is about
12 months from the date of production. Inspection is required when exceeding the time limited. It can continue to be used in case of neither thickening nor deterioration.
Package of Tin cured liquid silicone rubber:
20kg/drum, 25kg/drum or 200kg/drum of silicone rubber Part A
0.8kg/bottle, 1kg/bottle of silicone rubber Part B
Need more information, please feel free to contact us.
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