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CHT Group AS1811

Chemical Family: Silicones

Product Type: 1K (1 component) Adhesive, 1K (1 component) Sealant, Solvent free (100% Solids) Adhesive, Solvent free (100% Solids) Sealant

Application Area: Electronic Components, Thermal Management Application

Application Method: Gun, Pneumatic Gun

Features: Excellent Multi-Substrate Adhesion, Fast Cure, Good Adhesion, Low VOC, Non Corrosive, Primerless, Room Temperature Vulcanizing, Thermally Conductive

Technical Data Sheet
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Knowde Enhanced TDS

Identification & Functionality

Chemical Family

Features & Benefits

Labeling Claims
Key Features
  • UL94 V0 recognized in file No. E334038
  • Thermally conductive
  • Non corrosive
  • Low volatile content

Applications & Uses

Application Method
Product Applications

TIM for electronic and thermal management applications

Use and Cure Information

This product is a ready for use 1 Part system. If supplied in cartridges it can be applied using either manual or pneumatic dispensing guns. It can also be applied from bulk containers using conventional drum dispensing equipment.

All surfaces to which the sealant is to be applied should be clean, dry and free from grease, dirt, and loose material. Priming of surfaces is not normally required. If using as an adhesive, it should be applied to one clean surface and the other clean surface brought into contact with it within the tack free time stated opposite. For optimum bond strength, the thickness of the sealant joint should be a minimum of 1 mm.

The sealant will cure upon exposure to atmospheric moisture, ideally between 20 to 30 °C and 40% to 70% Relative Humidity. Time taken for cure will depend on the thickness of the joint, humidity and temperature. Joints should be left undisturbed for at least 24 hours, but preferably longer to effect sufficient depth of cure. Full cure requires 7 days.

“For pneumatic dispensing of 310 ml cartridges, the recommended pressure is 2.25 to 3.45 bar (40 to 50 psi). Dispensing pressure above the recommended limits may lead to gas bypassing the piston, causing spluttering at the nozzle and poor bead quality”

Properties

Color
Physical Form
Appearance
Thixotropic paste
Electrical Properties
ValueUnitsTest Method / Conditions
Volume Resistivity6.17×10¹⁴ohms cmASTM D-257
Cured Properties
ValueUnitsTest Method / Conditions
Density2.75g/cm³BS ISO 2781
Hardness Shore A61.0ASTM D 2240-95
Thermal Conductivity Heat Flow Meter2.12W/mKISO 8301 / ASTM C518
Thermal Conductivity Lees Disc3.02W/mKASTM D7340
Maximum Working Temperature200°C
Minimum Working Temperature-50°C
Uncured Properties
ValueUnitsTest Method / Conditions
Cure Through to 3 mm Depth18.0hours
Extrusion Rate57.0g/min
Self BondingYes
Tack Free Time / Skin Formation (at 23°C/73°F)3.0min

Regulatory & Compliance

Certifications & Compliance

Packaging & Availability

Packaging Type
Packaging Information

CHT Adhesives are available in a variety of packaging including cartridges and bulk containers.

Storage & Handling

Shelf Life
12 months
Storage Conditions

Maximum storage temperature is 40°C / 104°F