High Strength Pourable RTV 2 Silicone Liquid Rubber For Making
Molds For Gypsum And Concrete Decor
Product Description
Silicone liquid rubber is called Tin cure silicone rubber which is
also called condensation-cure silicone mold rubber, these are
high-tear silicone mold rubbers that are known as the “work horse”
of the industry because of their performance and economy.
RTV2 silicone rubbers for molds are liquid or pasty silicone
elastomers reticulating at room temperature. After the addition of
appropriate catalyst they form a stable and not reversible compound
characterized by high elasticity and mechanical resistance. Owing
to their high chemical-mechanical properties combined with easy
workability, the RTV2 silicone rubbers are suitable for making
flexible moulds and matrices to reproduce, starting from an
original model, hand-made articles of any kind and form, in
different applicative sectors. Silicone moulds, owing to their
anti-adherence features, allow an easy demoulding of models and
assure extreme faithfulness in the reproduction of details.
Application of RTV-2 silicone liquid rubber
mainly used for the reproduction of hand-made articles, from
silicone rubber matrices: resins (Unsaturated polyester resins,
epoxy resins, polyurethane resins and acrylic resins), Polyurethane
elastomers, Natural waxes and synthetic, Plasters and cements,
Low-melting point alloy and Wood imitation (PU resin).
Features of RTV-2 silicone liquid rubber
Cold vulcanize with the appropriate catalyst
Can be applied by direct pouring or by spreading
Easy mould building, no need of particular equipments
High elasticity, easy demoulding also for objects with undercuts
Extreme faithfulness in the reproduction of details from any
original model
Technical datasheet
| Item | MCSIL-H30 |
| Color | white |
| Mixing ratio | 100:2 |
| Mixed viscosity | 25000 cps |
| Working time | 30-40 mins |
| Curing time | 4-6 Hours |
| Hardness | 30 Shore A |
| Tear Strength | 32 N/mm |
| Tensile Strength | 4 Mpa |
| Shrinkage | ≤0.2% |
| Elongation at break | 480% |
Instruction of RTV-2 silicone liquid rubber:
How to use the silicone rubber to make a mold
Step 1: Prepare and clean the master piece. Please make sure your
original moulds clean and dry.
Step 2: Mixing part A and part B evenly. Take 100g of part A and
add 2g of part B and mix the silicone rubber and curing agent
evenly.
Step 3: Vacuum degassing, this step takes less than 10 minutes.
Otherwise, it will cause a cross-linking reaction, and no further
steps will be available.
Step 4: Pouring or brushing. After released the bubble, we can
pour/brush the silicone rubber on the master piece.
Package of RTV-2 Silicone Liquid Rubber
Part A base silicone: 20kg,25kg/drum or 200kg/drum
Part B CA30 Curing Agent: 800g/bottle, 1kg/bottle
Storage and Precautions of silicone liquid rubber:
RTV-2 silicone rubber for making art crafts, 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 one year 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.
Benefits of MC Silicone
Ease of processing
High resin resistance increasing the number of cast parts
Low linear shrinkage for greater accuracy
Easy release of shapes, including large pieces and complex
geometries
High compatibility with water-rich casting materials such as gypsum
Increased compatibility with high performance concrete
Dimensional stability due to very low shrinkage
High mechanical properties over a range of flexibility
If you have any question, welcome to contact us for further
discussion.
