Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Fillers Included
- Polymer Name
- Plastics & Elastomers Functions
- Technologies
- Product Families
Features & Benefits
- Materials Features
Applications & Uses
- Markets
- Applications
- Cure Method
- Plastics & Elastomers Processing Methods
- Uses
- Molds for casting polyurethane, epoxy, polyester, and other materials
- Vacuum form molds
- Wax casting molds
- Compression molds
- Appliation Details
MOLD CONSTRUCTION:
The composites approach to mold construction uses TC-1650 A/B as a binder forSC-125 Aluminum Granules. This mixture is cast behind a high temperature surface coat, TC-1611 A/B or TC-1618 A/B. This combination provides several benefits. The high temperature surface coat provides exceptional durability while the aluminum granule addition to the TC-1650 A/B vastly increases heat conductivity and reduces shrinkage. Using this method will also decrease cost. Generally, the SC-125 Aluminum Granule is added at the rate of 60-80 parts by weight to 100 parts by weight mixed resin and hardener. Larger amounts of aluminum granules are added when making vacuum form molds, casting molds, foam molds and other low pressure compression type molds.
POST CURING:
All physical property results are based upon post-curing this system. The following procedure provides the best results. Allow the casting to cure at ambient temperature for 8-12 hours. Then cure as follows:
75F (24C) for 12 to 20 Hours
150F (66C) for 1.5 to 2Hours
250F (121C) for 2 Hours
350F (177C) for 1 Hour
Turn off oven and allow to cool in the oven. This procedure provides further stabilization and eliminates possible thermal shocks for cavity tools that are temporarily clamped together for curing purposes.
Properties
- Physical Form
- Physical Properties
- Typical Properties
| Value | Units | Test Method / Conditions | |
| Hardness | 88 - 92 | Shore D | ASTM D2240 |
| Density | 1.76 | g/cc | ASTM D792 |
| Cubic | 17 | Inches per Pound | - |
| Tensile Strength | 8150 | psi | ASTM D638 |
| Flexural Strength | 11100 | psi | ASTM D790 |
| Flexural Modulus | 1.06 x 10⁶ | psi | ASTM D790 |
| Shrinkage Linear | 0.002 | in/in | ASTM D2566 |
| Heat Deflection Temperature (264 psi) | 283 (139.4) | °F(°C) | ASTM D648 |
| Compressive Strength | 27800 | psi | ASTM D695 |
| Coefficient of Thermal Expansion | 1.9 x 10⁻⁵ | in/in/°F | ASTM D3386 |
| Value | Units | Test Method / Conditions | |
| Mix Ratio by weight (Part A) | 100 | - | - |
| Mix Ratio by volume (Part A) | 100 | - | - |
| Specific Gravity (77°F (25°C), Part A) | 1.8 | - | - |
| Color (Part A) | Gray | - | - |
| Mixed Viscosity (77°F (25°C)) | 15500 | cps | Brookfield |
| Work Time (1lb mass, 77°F (25°C)) | 60 minutes | - | - |
| Gel Time | 90 minutes | - | - |
| Demold Time (77°F (25°C)) | 16 - 24 hours | - | - |
| Mix Ratio by weight (Part B) | 7 | - | - |
| Mix Ratio by volume (Part B) | 13 | - | - |
| Specific Gravity (77°F (25°C), Part B) | 0.98 | - | - |
| Color (Part B) | Amber | - | - |
Safety & Health
- Safty Precaution
Use in a well-ventilated area. Avoid contact with skin using protective gloves and protective clothing. Repeated or prolonged contact on the skin may cause an allergic reaction. Eye protection is extremely important. Always use approved safety glasses or goggles when handling this product.
Storage & Handling
- Storage
Store at ambient temperatures, 65-80°F (18-27°C). Unopened containers will have a shelf life of 12months from date of shipment when properly stored at recommended temperatures. Purge opened containers with dry nitrogen before re-sealing.