STD621
Functional additives 2025-05-14
Product Introduction
STD621 is a single-component high-toughness low-temperature thermal conductive adhesive.
Characteristics & Applications
- Thermal conductivity, electrical insulation, thermal shock resistance, low CTE;
- Used for components requiring heat dissipation and thermal shock resistance.
Instructions
To eliminate bubbles and ensure uniformity, preheat to 60-80°C before use, stir thoroughly and degas. Curing conditions: 120°C/1h, 110°C/2h, or 90°C/5h. For highly smooth surfaces, curing temperature should not exceed 110°C.
Physical and Chemical Data
| Appearance | Black viscous liquid |
| Viscosity (25°C)/mPa·s | 70,000-120,000 |
| Viscosity (80°C)/mPa·s | 2,500-4,500 |
| Pot Life at 80°C | >60 min |
| Cured Shore Hardness (40°C, 24h) | >90 |
| Cured Density (g/cm³) | 2.15-2.35 |
| Glass Transition Temperature (°C) | 75-100 |
*The above data reflect typical product properties and should not be interpreted as specifications.
Packaging
4kg/drum
Storage Conditions & Shelf Life
Store in a cool, airtight environment (recommended 2-8°C). Shelf life: 6 months.
Personal Protection
| Personal Protective Equipment | Impermeable gloves to avoid skin contact. |
| Respiratory Protection | No special protection required. |
| Eye Protection | Chemical splash goggles recommended. |
| Body Protection | Wear protective clothing resistant to this product. Equip with boots, gloves, eyewash stations, and emergency showers as needed. |
First Aid
Skin Contact
- Rinse thoroughly with soap and water for 5 minutes or until contaminants are removed.
Eye Contact
- Lift eyelids and rinse with running water or saline for 20 minutes.
- Seek immediate medical attention.
Inhalation
- Move to fresh air immediately.
- Seek medical help if symptoms persist.
