Description
QM 270 is a two-component, addition-cure silicone elastomer designed for moldmaking applications requiring higher hardness and dimensional stability. The system has a pourable consistency and extended work life, allowing for detailed mold filling and degassing prior to cure.
The cured material forms a high durometer silicone rubber (up to 70 Shore A with heat) with strong mechanical properties and low shrinkage. It is used for molds in architectural, furniture, and prototype applications where durability and rigidity are required.
Key Product Details
| Property | Value |
|---|---|
| Mix Ratio (by weight) | 10:1 |
| Viscosity (Mixed) | 50,000 cP |
| Work Life @ 25°C | 70 minutes |
| Demold Time | 8–12 hours |
| Cure Type | Addition |
| Hardness | 62 Shore A (up to 70 Shore A with heat) |
| Tensile Strength | ~1000 psi |
| Elongation | 110% |
| Tear Strength | 99 ppi |
| Linear Shrinkage | < 0.1% |
| Service Temperature | -55°C to 204°C |
Performance in Production
- Higher hardness produces more rigid, durable molds
- 70-minute work life supports large pours and degassing
- Pourable viscosity allows filling of detailed geometries
- Low shrinkage maintains dimensional accuracy
- Heat can be used to increase final hardness
Common Applications
- Architectural replication molds
- Furniture and picture frame molds
- Prototype and technical part molds
- Polyester, epoxy, and polyurethane casting molds
Available Sizes or Variants
- 1.1 Kg Kit (Quart)
- 5.5 Kg Kit (Gallon)
- 19.8 Kg Kit (Pail)
- 242 Kg Kit (Drum)
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