Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Polymer Name
- Technologies
- Product Families
Features & Benefits
- Materials Features
- Special Features
- Condensation-curing
- Two-component
Applications & Uses
- Markets
- Cure Method
- Plastics & Elastomers End Uses
- Applications
- Making cost effective molds.
- Reproduction Molding for Foundry, Arts and Handicrafts.
- Application Details
- ELASTOSIL® M 4440 is a general-purpose mold-making material suitable for casting resins, wax, gyp-sum, etc.
- ELASTOSIL® M 4440 is preferred when no or only minor undercuts are involved and a certain inherent stability of the mold is required.
Processing
- ELASTOSIL® M 4440 is cured by adding Catalyst T 37 for long pot lives and curing times, and Catalyst T 40 for short pot lives and curing times.
- The pot life is the period of time at 23°C, 50% rel. humidity during which the catalyzed mix to attain a viscosity of 100,000 mPa s and still be just pourable.
Catalyst Paste T40
Pot Life, approx. [minutes]
Curing time (tack-free), approx.[h]
3% T21 80 8-10 2% T40 50 6-7
Properties
- Catalyst Properties
- Cured Properties
- Uncured Properties
- Properties
- Very good flowability and self-deaeration
- Medium shore A hardness
- Very good resistance to common casting resins.
- Note
- Catalyzed with 3 wt% Catalyst T 37 for catalyzed properties.
- Cured Properties Conditions: Cured, with 3 wt% Catalyst T 37 ,after 4 days at 23°C, 50% rel. humidity.
| Value | Units | Test Method / Conditions | |
| Dynamic Viscosity (at 23°C) | 20000 | mPa·s | ISO 3219 |
| Value | Units | Test Method / Conditions | |
| Density (in water, at 23°C) | 1.23 | g/cm³ | ISO 2781 |
| Elongation (at break) | 220 | % | ISO 37 |
| Linear Shrinkage | 0.4 | % | — |
| Shore Hardness A | 37 | — | ISO 868 |
| Tear Strength | 4.5 | N/mm | ASTM D 624 B |
| Tensile Strength | 2.5 | N/mm² | ISO 37 |
| Value | Units | Test Method / Conditions | |
| Density (at 23°C, 1013 hPa) | approx. 1.25 | g/cm³ | DIN 53479 |
| Dynamic Viscosity (at 23°C, after stirring) | 25000 | mPa·s | DIN EN ISO 3219 |
Regulatory & Compliance
- Certifications & Compliance
Safety & Health
- Safety Note
- Being a condensation-curing silicone rubber, ELASTOSIL M 4440 contains only constituents that over many years have proved to be neither toxic nor aggressive. Special handling precautions are therefore not required, i.e., only the general industrial hygiene regulations apply.
- Catalysts T 37 and T 40 contain a tetraorganotin compound, are flammable and may cause irritation in contact with the eyes and skin. Adequate protective measures are required.
Packaging & Availability
- Country Availability
- Regional Availability