DESCRIPTION
MC mold making silicone rubber is a two-component material, this
kind of silicone rubber consists of Part A base silicone and Part B
CA30 curing agent, and Part A base silicone and Part B curing agent
can cure at room temperature by a condensation reaction. These
materials can be cast into the cured silicone molds: Plaster
polyurethane, PU, GRC, cement, resin, polyester, wax etc...
FEATURES
1. Good flowability 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
APPLICATIONS
RTV silicone rubber is suited for reproduction of middle size
cement molds, concrete stones, artificial stones, plaster molds,
figures, art objects, decoration molds, GRC products, gypsum
products, resin products, PU molds. etc...
How to make the silicone mold?
1. Preparing
The surface of the original objects should be clean and free of
loose material. If your products have thin flower patterns, and
especially have porous substrates, please use a suitable mold
release agent such as soap water, detergent, Vaseline or petroleum
jelly.
2. Mixing
Please weigh Part A silicone base and part B CA30 Curing Agent with
ratio of 100: 2 into a clean container. Stir Part A base silicone
thoroughly before use, then Mix Part A and Part B evenly until the
curing agent completely dispersed in the silicone base. Manual or
mechanical mixture can be used, but do not last much time or allow
the temperature to exceed 35C (95F). It's suitable to mix small
quantities to ensure thorough mixture of silicone base and curing
agent.
Note: It is strongly recommended that entrapped air be removed in a
vacuum chamber, allowing the mixture to completely expand and then
collapse. After a further 1 to 2 minutes under vacuum, the mixture
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.
3. Pouring the mixture and curing
Pour the mixed Part A base silicone and CA-30 curing agent as soon
as possible onto the original object, 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.
PACKING
Part A base silicone: 20kg/drum, 25kg/drum or 200kg/drum
Part B CA30 Curing Agent: 0.25kg/bottle, 1kg/bottle and 10kg/bottle
STORAGE
When the silicone rubber is stored at or below 30 C (85F) in the
original unopened containers, silicone base and CA30 Curing agent
have a usable life of 9 months from the date of production.
NOTE
RTV silicone rubber is an industrial product and must not be used
in food molding, dental human skin molding applications.
