Tin Cure Liquid Silicone Moulding Rubber For Artificial Stone 30
shore A
Product Description
Tin Cure Liquid Silicone rubber is is generally named as two-part room temperature sulfurated
silicone rubber, which features an exceptional fluidity and good
operability. When mixed with 2% curing agent, they can still be
operated within 30 minutes, but will be formed after 4-6 hours.
With resistance to deformation, high temperature, acid and alkali,
and expansion.
Typical Properties of RTV-2 silicone liquid rubber
Item No. | Properties before curing | Curing |
| Part A | Part B | Part A+ Part B | Pot life at 250C | De-molding Time at 25℃ |
| Appearance | Appearance | Ratio | Viscosity |
MCSIL-2030 silicone rubber | White | Clear | 100:2 | 25000±2000 cps | 30-40 mins | 4-6 hours |
| Properties after curing 24 hours |
Hardness Shore A | Tear strength | Tensile Strength | Elongation break (%) | Linear Shrinkage |
| 30 | 28-30 N/mm | 4.0Mpa | 450-500 | 0.2-0.4% |
Various Applications of silicone liquid rubber
Various Applications of Silicone Liquid Rubber
Architectural Restoration
Concrete Casting
Gypsum Decorations
Resin Arts and Crafts
Candle and Soap
Staute & Scupltures
Wax Casting
Features of RTV-2 silicone liquid rubber
(1) high tensile & tear strength
(2) Low linear shrinkage
(3) free Curing agent
(4) brushing & pouring
(5) high duplication times
Operation Instructions of Liquid Silicone Rubber
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.
Package of RTV-2 Silicone Liquid Rubber
Part A base silicone: 25kg/drum or 200kg/drum
Part B CA30 Curing Agent: 800g/bottle, 1kg/bottle
Storage & Shelf life
When the silicone rubber is stored at or below 25℃ (77℉) with the
original unopened containers, Silicone Base and Curing agent have a
usable life of 12 months from the date of production. After 12
months stock, please use the Stir machine to mix the Part A
silicone for some minutes, then the silicone can be used again, no
influence for other performance.
