Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Technologies
Features & Benefits
- Labeling Claims
- Ready-to-Use Product Features
Applications & Uses
- Applications
- Application Area
- Applications & Advantages
- Excellent Thermal Cycling Performance & Thermal Shock Resistance
- Resilient, Tough, Durable, High Elongation
- Low Embedment Stress on Electronics, Low Shrinkage
- Adhesion to Thermoplastics and Wire Insulation, Specific Adhesion to Aluminum
- Instruction for Use
MIX RATIO ByWEIGHTVOLUMEKEY Tough-Seal 21 Part A51 A 1 AKEY Tough-Seal 21Part B100 B2 B Combine Part A and B and mix thoroughly, being careful to limit entrapped air duringmixing. Scrape sides, walls and bottom of container. Pour material into part and cure.Bulk meter-mix dispensing machines and convenient cartridges provide air free mixing.
Properties
- Color
- Physical Properties
- Mechanical Properties
- Thermal Properties
- Electrical Properties
| Value | Units | Test Method / Conditions | |
| Viscosity at 25°C | 7000 | cP | — |
| Brookfield RVT at 20rpm | 5 | — | — |
| Specific Gravity | 1.32 | — | — |
| Density (lbs/gal) | 11 | — | — |
| Elongation at Break 25°C (77°F) | 225 | % | D638 |
| Gel Time (100g) at 25°C (77°F) | 10 | minutes | — |
| Hard Cure at 25°C (77°F) | Overnight | — | — |
| Full Cure | 3 to 5 Days, Dependent on part size | — | — |
| Accelerated Cure at Mild Heating 66 to 80°C (150-175°F) | Yes | — | — |
| Hardness, 25°C (77°F) | 64 | Shore A | D2240 |
| Value | Units | Test Method / Conditions | |
| Hardness vs Temperature -25°C (-13°F) | 75 | Shore A | D2240 |
| Hardness vs Temperature -75°C (-103°F) | 88 | Shore A | D2240 |
| Hardness vs Temperature 100°C (212°F) | 57 | Shore A | D2240 |
| Hardness vs Temperature 120°C (248°F) | 51 | Shore A | D2240 |
| Hardness vs Temperature 150°C (302°F) | 47 | Shore A | D2240 |
| Hardness vs Temperature 25°C (77°F) | 64 | Shore A | D2240 |
| Hardness vs Temperature 5°C (41°F) | 69 | Shore A | D2240 |
| Hardness vs Temperature 50°C (122°F) | 62 | Shore A | D2240 |
| Hardness vs Temperature 66°C (150°F) | 61 | Shore A | D2240 |
| Hardness vs Temperature 80°C (176°F) | 62 | Shore A | D2240 |
| Tensile Strength 25°C (77°F) | 450 | psi | D638 |
| Elongation at Break 25°C (77°F) | 225 | % | D638 |
| Linear Shrinkage (Upon Cure) 25°C (77°F) | max. 0.001 | in/in | D2256 |
| Hardness vs RT Cure 1 Hour at 25°C (77°F) | 15 | Shore A | D2240 |
| Hardness vs RT Cure 2 Hours at 25°C (77°F) | 26 | Shore A | D2240 |
| Hardness vs RT Cure 4 Hours at 25°C (77°F) | 31 | Shore A | D2240 |
| Hardness vs RT Cure 8 Hours at 25°C (77°F) | 35 | Shore A | D2240 |
| Hardness vs RT Cure 12 Hours at 25°C (77°F) | 35 | Shore A | D2240 |
| Hardness vs RT Cure 1 Day at 25°C (77°F) | 39 | Shore A | D2240 |
| Hardness vs RT Cure 2 Days at 25°C (77°F) | 46 | Shore A | D2240 |
| Hardness vs RT Cure 3 Days at 25°C (77°F) | 52 | Shore A | D2240 |
| Hardness vs RT Cure 4 Days at 25°C (77°F) | 57 | Shore A | D2240 |
| Hardness vs RT Cure 1 Week at 25°C (77°F) | 60 | Shore A | D2240 |
| Hardness vs RT Cure 1 Month at 25°C (77°F) | 68 | Shore A | D2240 |
| Value | Units | Test Method / Conditions | |
| Heat Capacity,Cp 25°C (77°F) | 1.37 | J/g°K | E1461 |
| Thermal Conductivity 25°C (77°F) | 0.26 | W/m°K | E1461 |
| Coefficient of Thermal Expansion -65°C to 75°C | 135 | ppm/°C | E831 |
| Coefficient of Thermal Expansion 75°C to 100°C | 0 | ppm/°C | E831 |
| Coefficient of Thermal Expansion 100°C to 150°C | 75 | ppm/°C | E1545 |
| Value | Units | Test Method / Conditions | |
| Dielectric Strength at 25°C (77°F) | 350 | Volts/mil | D149 |
| Volume Resistivity at 25°C (77°F) | 1.2 x 10 12 | Ω-cm | D257 |
| Dielectric Constant at 25°C (77°F) 1 kHz | 5.5 | — | D150 |
| Dielectric Constant at 25°C (77°F) 1 kHz | 5 | — | D150 |
| Dielectric Constant at 25°C (77°F) 60 Hz | 5.75 | — | D150 |
| Dissipation Factor at 25°C (77°F) 1 MHz | 0.026 | — | D150 |
| Dissipation Factor at 25°C (77°F) 1 kHz | 0.028 | — | D150 |
| Dissipation Factor at 25°C (77°F) 60 Hz | 0.064 | — | D150 |
Safety & Health
- Safety & Handling
Avoid all contact with skin, eyes, clothing and food. Wash thoroughly after handling.
Storage & Handling
- Shelf Life & Storage Info
- KEY Tough-Seal 21A (PC2021A) 3 Months from Date of Manufacture (15°C to 35°C)
- KEY Tough-Seal 21A (PC2021A) 12 Months from Date of Manufacture (-18°C to 3°C)
- KEY Tough-Seal 21B (PC2021B) 12 Months from Date of Manufacture (-18°C to 35°C)
- KEY Tough-Seal 21 Cartridges 3 Months from Date of Shipment (15°C to 35°C)
- KEY Tough-Seal 21 Cartridges 12 Months from Date of Shipment (-18°C to 3°C)