Plaster Craft Mold Making Liquid Silicone Rubber
Description of Plaster Craft Mold Making Liquid Silicone Rubber
Plaster Craft 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 of Plaster Craft Mold Making Liquid Silicone Rubber
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 of Plaster Craft Mold Making Liquid Silicone Rubber
MCSIL-2030/H25 silicone rubber is suitablr for gypsum mold making.
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 of Plaster Craft Mold Making Liquid Silicone Rubber
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 of Plaster Craft Mold Making Liquid Silicone Rubber
When the RTV-2 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 12 months from the date of production.
Note of Plaster Craft Mold Making Liquid Silicone Rubber
RTV2 silicone rubber is an industrial product and must not be used in food molding, dental human skin molding applications.
| Item |
MCSIL-H25 |
| Color |
white |
| Mixing ratio |
100:2 |
| Mixed viscosity |
25000-26500 |
| Working time |
30-40 mins |
| Curing time |
4-5 Hours |
| Hardness |
27-28 Shore A |
| Tear Strength |
30 N/mm |
| Tensile Strength |
4.5 Mpa |
| Shrinkage |
≤0.3% |
| Elongation at break |
510% |
Package of Mold Making Silicone Rubber RTV 2 To Pouring Grc Gypsum Mould
Part A base silicone: 20kg/drum, 25kg/drum or 200kg/drum
Part B CA30 Curing Agent: 800g/bottle and 1kg/bottle
Professional factory of RTV2 silicone:
We are manufacturer, and specialized in manufacturing different hardness, different viscosity silicone rubber series, we are competitive in price with good quality.
Should you have any question, please feel free to contact us .
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