25 Shore A Tin Cured Liquid Silicone Rubber For Decorative Gypsum Concrete Mold

25 Shore A Tin Cured Liquid Silicone Rubber For Decorative Gypsum Concrete Mold

RTV-2 Silicone is a two-component material, and the silicone rubber includes Part A base silicone and Part B CA30 curing agent. The Part A base silicone and Part B curing agent can cure at room temperature by a condensation reaction.

APPLICATIONS of Liquid Silicone Rubber
RTV-2 Silicone are suited for reproduction of cement molding, concrete stones, artificial stones, plaster molding, figures, art objects, decoration molding, GRC products, gypsum products, resin products, PU molds. etc.

FEATURES of Liquid Silicone Rubber
1. Good flow ability and long working time
2. Medium hardness
3. High tear and tensile strength
4. Easy de-mould from complex replica parts
5. Acid and alkali-resistance
6. Low linear shrinkage (0.3%)

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 shelf life
MC Silicone MCPLA -H Series should be used within 12 months from the manufacturing date. Beyond this date, MC silicone no longer guarantees the products confirms with the sales Specification. In order to preserve best properties it is recommended to follow strictly the following guild lines:
Store the original packing tightly sealed and at a temperature below 30 degree Celsius.
Use the product as soon as the packaging has been opened.

Mingcheng Group Limited was established in 2010 based in Dongguan,China, with brand MC Silicone for overseas market, dedicated to manufacturing and R&D of mold making and casting materials.

Our professional approach to all our work, together with creative ideas and strong technical skills, enable us to produce high quality, cost effective materials. We pride ourselves on the different types of mould making materials we offer.

Why Choose Us?

Our Advantages
More than 20 years experience in moldmaking & casting industry
10 years exporting experience

Benefits of MC Silicone
1- A Technology Team: R&D Support
2- A Factory: customize for you in every possible aspect
3- A Sales Team: assist you develop more markets
4- Fast Delivery time about 3-5 working days per order
5- Professional Sales Service, 12-24 hours response
6- Various Payment Method

If you're looking for a good silicone supplier, you've come to the right place. Our unique vision and mission drives us bring the best products and service to each of our clients. We gonna be your guide in silicone industry, we are your partner. Welcome to Join us.