RTV 2 part silicone molding compound for mould making casting epoxy resin
RTV-2 mould making silicone rubber is generally named as two-part silicone rubber that vulcanizes at room temperature. Part A is a flowable liquid, part B is the catalyst.
rtv2 GC silicone rubber C-825 for epoxy craft molds
1.Good characteristics of easy-operation
2.Light viscosity and good flowability
3.Low shrinkage
4.Favourable tensile and tear strength
5.High-temperature resistance, acid and alkali-resistance
6.High duplication times
7.Vulcanize at room temperature
8.Easy for demoulding
9.No smell ,non-flammable ,safe and reliable
Technical Datasheet
| Item | Parameter | ||||
| C-830 | |||||
| Viscosity(cps) | 22000±1000 | ||||
| Hardness(A°) | 30±2 | ||||
| Tensile Strength(kgf/cm²) | 45±2 | ||||
| Tear Strength(KN/M) | 26±1 | ||||
| Elongation(%) | 450±50 | ||||
| Shrinkage Rate(%) | 0.3% | ||||
| Mixing Ratio | 100:2 | ||||
| Life Time(Min) | 20~30 | ||||
| Curing Time (hr) | 2~3 | ||||
| Temperature(℃) | 25 | ||||
Product Application
Making molds for
Artificial stoneproducts molding,Waxcasting
Lighting & candles crafts,stationery gifts,crafts industry
Making molds for gypsum,GRC,concrete,resin products etc
Casting for Statue,Buddha,Christmas ornaments,sculptures,figures etc
Unsaturated rein crafts,epoxy resin crafts, poly resin crafts,polyester resin
Decoration building mold making (cornice,column, balustrade, ceiling, pedestals,fountains, mantels, wall
ornament, planter,furniture decorative etc.)
How to Use
Step One: Prepare and clean the prototype. You must make sure your original moulds perfect.
Step Two: 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 Three: Vacuum pumping. Without exception, this step takes less than 10 minutes. Otherwise, it will cause a cross-linking reaction, and no further steps will be available.
Step Four: Pouring cast or brushing cast. After released the bubble, we can pour/brush the silicone rubber on the prototype
Pouring cast:
It is suitable for simple products with a smooth surface. Without any mould lines, which helps you save time and is easy for operation. Evenly and slowly pouring the mixed silicone rubber into the square frame. After the cross-linking reaction and the silicone rubber turns dry, you can take the products out. Thus, the mould has been done.
Brushing cast:
- Evenly brush the mixed silicone rubber on the product which is covered with mould spray with a brush or a brush pen.
- After the cross-linking reaction (about 30 minutes), brush a second coat which can increase the tension and tear strength of the mould.
- Cover a glass cloth on it after another 30 minutes of a second cross-linking reaction, and use a brush pen or a brush to avoid any interstices.
- Cover a third coat.
Product Storage
1. It is a kind of non-dangerous goods. This product should be sealed and placed in a cool and dry place which should keep from sunlight and rain .
2. The shelf life is 12months from the date of production.
It can be reused after reinspection when it exceeds the storage period.
Related Products
The rtv2 silicone rubber is light viscosity and good flowability for easy-operation .It is low shrinkage
,favorable tensile and tear strength ,high temperature resistance ,acid and alkali-resistance for epoxy resin craft molds casting
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: 86-13925729510
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