1 Description
GC silicone mold rubbers are widely used to reproduce high-quality miniature and large-scale models at a relatively fast pace. Tin-cured (C-8 series) silicone mold rubbers offer great flexibility, chemical resistance and release properties. Popular product options is C-820/C-825/C-830.
2. Technical Datasheet
| Typical general characteristics | Inspection Method | Value | ||
| Product data (Catalyzed A+B) | C-820 | C-825 | C-830 | |
| Hardness | Shore A | 20±2 | 25±2 | 30±2 |
| Mix Ratio | A:B | 100:3 | 100:3 | 100:3 |
| Color | / | White | White | White |
| Pot life | 25 °C (77F) | 30-40mins | 30-40mins | 30-40mins |
| Curing time | 25 °C (77F) | 3-4 hours | 3-4 hours | 3-4 hours |
| Mixed viscosity | mPa.s | 16000±1000 | 20000±1000 | 23000±1000 |
| Tear-strength | kg/cm | 20±2 | 22±2 | 23±2 |
| Tensile-strength | M.pa | 3.6±0.5 | 4.0±0.5 | 5.0±0.5 |
| Elongation | % | 400±50 | 450±50 | 460±50 |
| Shrinkage | % | ≤0.3 | ≤0.3 | ≤0.3 |
Note: This is a 100A:3B mix ratio product that must be measured by weight. The choosing of suitable hardness should be according to the size and pattern design of the products. If large products and therefore multiple-piece molds are needed by customers, silicone rubber with higher hardness will be required for the molds. Conversely, soft silicon is indispensable for molds with complicated pattern and delicate details. The amount of curing agent admixture depends on the actual need of customers. More will be added for speedy drying and fast release and less when otherwise.
3. FEATURES
1.Low viscosity
2.great flexibility
3.Extra low shrinkage
4.Chemical resistance
5.release properties
6.Easy to work with
4.High tear strength
5.Heat Resistance
6.various color is available
7.High reproduction rate
4.SHELF LIFE:
When stored at or below 32°C (89.6°F) in the original unopened containers, C-8 series Silicone Base and its Curing Agents have a usable life of I0 months.
5.Package
Silicone base:1kg/drum; 20kg/drum;25kg/drum;200kg/drum.
Curing Agent: 30g/bottle; 1kg/bottle
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