Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Polymer Name
- Plastics & Elastomers Functions
- Technologies
- Product Families
Features & Benefits
- Advantages
Advantages that ONYX™ resins offer over other resins
- if you desire a black casting, adding color pigment is not necessary.
- cured plastic is ultra-black and darker than competitive black resins.
- cured ONYX™ plastic can be polished and buffed to a high gloss shine and
- ONYX™ offers higher heat resistance vs. competitive black resins.
- unlike other black resins, ONYX™ does not contain mercury and
- ONYX™ is less expensive vs. other black resins.
Applications & Uses
- Applications
- Plastics & Elastomers End Uses
- Processing Recommendations
Preparation
These products have a limited shelf life and should be used as soon as possible. Materials should be stored and used in a warm environment (73°F/23°C). All liquid urethanes will react with moisture in the air, causing bubbles. Use in a low humidity environment (below 50% RH). Mixing containers should have straight sides and a flat bottom. Mixing sticks should be flat and stiff with defined edges for scraping the sides and bottom of your mixing container. Because no two applications are quite the same, a small test application to determine suitability for your project is recommended if performance of this material is in question.
Applying A Release Agent
A release agent is necessary to facilitate demolding when applying into or over most surfaces. Use Mann’s Ease Release™ 200 which will release both urethanes and silicones. A liberal coat of release agent should be applied onto all surfaces that will contact the plastic. IMPORTANT: To ensure thorough coverage, apply release and brush with a soft brush over all surfaces. Follow with a light mist coating and let the release agent dry for 30 minutes.
Properties
- Typical Properties
| Value | Units | Test Method / Conditions | |
| Pot Life at 73°F (23°C) | 5 | Minute | ASTM D-2471 |
| Cure Time at 73°F (23°C) | 90 | Minute | — |
| Tensile Strength | 7660 | psi | ASTM D-638 |
| Tensile Modulus | 374000 | psi | ASTM D-638 |
| Elongation at Break | 3 | % | ASTM D-638 |
| Flexural Strength | 10230 | psi | ASTM D-790 |
| Flexural Modulus | 286000 | psi | ASTM D-790 |
| Compressive Strength | 11400 | psi | ASTM D-695 |
| Compressive Modulus | 97900 | psi | ASTM D-695 |
| Shrinkage | 0.012 | in./in. | ASTM D-2566 |
| Mix Ratio | 100A:100B (120A:100B) | by volume (by weight) | — |
| Mixed Viscosity | 100 | cps | ASTM D-2393 |
| Specific Gravity | 1.09 | g/cc | ASTM D-1475 |
| Specific Volume | 27.7 | cu. in./lb. | ASTM D-1475 |
| Hardness | 80 | Shore D | ASTM D-2240 |
| Heat Deflection Temp | 212 (100) | °F (°C) | ASTM D-648 |
Technical Details & Test Data
- Mixing and Pouring
Mixing
Stir or shake Part A and Part B thoroughly before dispensing. After dispensing required amounts of Parts A and B into mixing container, mix thoroughly. Stir for at least 60 seconds, making sure that you scrape the sides and bottom of the mixing container several times.
Pouring
For best results, pour your mixture in a single spot at the lowest point of the containment field and let the mixture seek its level. This will help minimize air entrapment
- Curing and Performance
Curing
Important: Use this product with at least room size ventilation or in proximity to a forced outlet air vent and do not inhale/breathe fumes. Fumes, which may be visible with a significant mass concentration, will quickly dissipate with adequate ventilation. Castings with significant mass may be hot to the touch and irritate skin immediately following cure. Let casting cool to room temperature before handling. Demold time of the finished casting depends on mass and mold configuration. Low mass or thin-walled castings will take longer to cure than castings with higher mass concentration.
Post Curing
Although not necessary, post curing will increase physical properties, material performance and heat resistance to 250°F/121°C for ONYX™ FAST and 212°F/100°C for ONYX™ SLOW. After curing at room temperature for 1 hour, expose material in the mold to 250°F/121°C for 4–6 hours. Let cool to room temperature before use.
Performance
Cured castings are hard and durable. They resist moisture, moderate heat, solvents, dilute acids and can be machined, primed and painted or bonded to other surfaces (any release agent must be removed). If machining castings, wear dust mask or other apparatus to prevent inhalation of residual particles. Castings can be displayed outdoors after priming and painting. Unpainted castings may be affected by UV light.