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.