Condensation Cure Liquid Silicone Rubber For Gypsum And Concrete Mold Making
HN-620 A/B is a two-component liquid silicone material. Two components are mixed in a ratio of 100:2. This product is cured at room temperature.
Application of Tin Cure Silicone Rubber
HN-620 A/B is an industrial-grade liquid silicone rubber specifically designed for molds used in architectural decoration and handicrafts. It is particularly well-suited for the replication of large-scale stone, gypsum, and cement components—including Roman columns—as well as artistic sculptures. Furthermore, this material is highly effective for creating molds for lifelike replicas of flora and fauna, resin castings, Buddhist statues, and various decorative gift items, thereby meeting the demands for both high-precision reproduction and large-scale manufacturing.
Technical parameter of Tin Cure Silicone Rubber
| Model |
HN-620AB |
| Feature |
low viscosity |
| Viscosity (cs) |
170000 |
| Gravity ( G/cm 3 ) |
1.06 |
| Hardness(A°) |
20 |
| Strength( MPa) |
3.1-3.6 |
| Tear Strength (kN/m ) |
19.8-24.3 |
| Elongation(%) |
600-720 |
| Linear Shrinkage(%) |
≤0.2 |
| Curing Agent Addition Ratio(%) |
2-3% |
| Operating Time( mins ) |
30-40 |
| Curing Time( hours ) |
3-4 |
Feature of Tin Cure Silicone Rubber
1. Two-Component System: Composed of a high-quality base resin and a curing agent, featuring a precise mixing ratio and stable curing performance.
2. Excellent Processability: Exhibits outstanding flow properties, allowing for effortless pouring; possesses strong self-deaerating capabilities, enabling the creation of bubble-free molds without the need for complex vacuum degassing.
3. Chemical Stability: Resistant to extreme temperatures as well as acid and alkali corrosion; features an extremely low linear shrinkage rate upon curing, ensuring precise mold dimensions.
4. Superior Mechanical Properties: Boasts high tensile strength and strong tear resistance, resulting in molds that are both flexible and durable—thereby significantly increasing the number of casting cycles and extending overall service life.
Advantages of Tin-Cure Silicone Rubber
Tear-resistant and long-lasting
Distinguished by superior flexibility and exceptional tear resistance, Hannast molding silicone outperforms industry standards. Our molds offer a significantly extended service life, allowing for higher reuse frequency and maximized production efficiency.
Low shrinkage and precise reproduction
The shrinkage rate is negligible, ≤2‰, enabling the reproduction of the finest and most complex details.
Non-Toxic & No Odor
Made of premium silicone material, liquid silicone rubber will not produce unpleasant odors, allowing you to use more assured
Good Fluidity
Liquid silicone rubber has good fluidity, self-leveling, easy-release bubbles,and easy pouring to help complete the mold.
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