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, particularly for casting PE resins.
- Reproduction Molding
- Application Details
- Due to its good mechanical properties of the cured material as well as its high resistance to polyester resins, ELASTOSIL® M 4503 is particularly suitable as a mold-making material for reproducing models with very pronounced undercuts in polyester resins.
- Other materials, such as plaster or wax, may also be cast without any problems from molds made of ELASTOSIL® M 4503.
Processing
- ELASTOSIL® M 4503 is cured by adding 5 wt% Catalyst T35 Pot life curing time may be accelerated, and thus adjusted to suit the individual application by blending with Catalyst T47.
- The pot life is the period of time at 23°C, 50% relaive humidity during which the catalyzed mix to attain a viscosity of 100000 mPa s and still be just pourable.
- For faster curing Catalyst T 35 may be blended with Catalyst T 47. E.g. at a ratio of 95:5 (T35:T47) the pot life decreases to about 30 min, and the mold needs only about 4 h to cure.
Properties
- Catalyst Properties
- Cured Properties
- Uncured Properties
- Properties
- Good flow
- Low Shore A hardness
- Great extensibility and elasticity
- High resistance to casting resins, particularly polyesters.
| Value | Units | Test Method / Conditions | |
| Demoldable (at 23°C) | 20 | hours | — |
| Pot Life (at 23°C, up to 100000 mPa.s, with 5% T35) | 75 | minutes | — |
| Value | Units | Test Method / Conditions | |
| Density (at 23°C) | 1.2 | g/cm³ | ISO 2781 |
| Elongation (at break) | 350 | % | ISO 37 |
| Linear Shrinkage (at 23°C) | 0.5 | % | — |
| Shore Hardness A | 25 | — | DIN ISO 48-4 |
| Tear Strength | min. 20 | N/mm | ASTM D 624 B |
| Value | Units | Test Method / Conditions | |
| Density (at 23°C) | 1.16 | g/cm³ | ISO 2811 |
| Dynamic Viscosity (at 23°C, after stirring) | 40000 | mPa·s | ISO 3219 |
Regulatory & Compliance
- Certifications & Compliance
Safety & Health
- Safety Note
- Being a condensation-curing silicone rubber, ELASTOSIL® M 4503 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 35 and T 47 contain a tetraor-ganotin compound, are flammable (flash points 50°C and 34°C respectively) and may cause irritation in contact with eyes and skin. Adequate protective measures are required.
Packaging & Availability
- Country Availability
- Regional Availability