20 Shore A Tin Cure Moulding Silicone Resin Crafts Mold Making RTV2
Liquid Silicone Rubber
Product Description
Silicone liquid 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-2020 silicone rubber | White | Clear | 100:2 | 22000±2000 cps | 30-40 mins | 4-6 hours |
| Properties after curing 24 hours |
Hardness Shore A | Tear strength | Tensile Strength | Elongation break (%) | Linear Shrinkage |
| 20 | 28-30 N/mm | 3.8 Mpa | 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 Silicone Liquid Rubber
Correct mixing ratio
Component A is silicone rubber, and component B is curing agent or
vulcanizing agent. Usually the mixing ratio will be 2-3%, e.g. to
100g silicone rubber should be added 2g catalyst and then mix them
thoroughly. (Note: the weight of the silicone and catalyst should
be weighed correctly).
Pouring the mixture and curing
Pour the misxed Part A base silicone and CA-30 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.
