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Introduction of RTV Silicone Rubber for Resin Crafts
RTV silicone rubber is made up of two-component materials, they are 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. These materials can be cast into the cured silicone mold: plaster, polyurethane, PU, GRC, cement, resin, polyester, wax etc...
Characteristics of RTV Silicone Rubber for Resin Crafts
Equiped with REACH certificate
Professional technician with rich experience
4% catalyst is offered for free of charge
Silicone range:10-60 shore A
High duplicating silicone molds
Applications of RTV Silicone Rubber for Resin Crafts
RTV920/930 silicone rubber are suitable for objects with detailed cuts, such as resin mold making.
Datasheet of RTV Silicone Rubber for Resin Crafts
| Item | RTV 920 |
| Color | off-white |
| Curing agent | CA30 |
| Mixing ratio | 100:5 |
| Mixed viscosity | 13200 cps |
| Working time | 60-80 Minutes |
| Curing time | 8-12 Hours |
| Hardness | 18-20 Shore A |
| Tear Strength | 30 N/mm |
| Tensile Strength | 4 MPA |
| Shrinkage | ≤0.3% |
| Relative density | 1.1-1.15 g/cm3 |
| Elongation at break | 530% |
Instructions for Making Silicone Molds
1. Make sure the surface of the original is clean and free of loose material.
2. Weight 100 Part A base and 2 parts of CA30 Curing Agent in a clean container.
3. Stir Part A base silicone before use thoroughly , as filler separation may occur upon prolonged storage.
4. Mix Part A and Part B evenly until the CA30 completely dispersed in the base.
5. Pour the mixed Part A base silicone and CA-30 curing agent as soon as possible onto the original
6. De-mold after 24 hours ,it is will improve the replicate times of silicone mold.
Note: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.
Storage of RTV Silicone Rubber for Resin Crafts
When the RTV silicone rubber is stored at or below 30 °C(85 °F) in the original unopened containers, RTV2 Silicone Base and CA30 Curing agent have a usable life of 12 months from the date of production. After 12 months,please use a stirring mill to stir the Part A silicone for some minutes, then the silicone can be use again, no influence for other performance.
The information above is just for reference, if you're interested or have any questions, please feel free to contact Nicole:
Web:www(dot)mcsilicone(dot)com
E-mail:nicole(at)mcsilicone(dot)com
Skype:nicoleszmc
MSN: nicoleszmc (at)hotmail(dot)com