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Bondline 7784 is a medium viscosity, one component, thermally conductive epoxy adhesive. It has excellent impact, thermal and moisture resistance. It is used as an encapsulating, substrate attach, heat sink attach, lid sealing and component staking adhesive. It exhibits strong adhesion to difficult-to-bond metals, such as gold, silver, and copper.

Product Type: 1K (1 component) Adhesive, Encapsulant, Potting Compound

Compatible Substrates & Surfaces: Copper, Gold, Metal

Chemical Family: Epoxy & Epoxy Derivatives

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Knowde Enhanced TDS

Identification & Functionality

Features & Benefits

Applications & Uses

Compatible Substrates & Surfaces
Applications

APPLICATION

Check the work life of the adhesive, on the technical data sheet. Adhesives must be used within its work life .Ihe adhesives properties will change it it is used past the allowable work lite. Apply adhesive using dispensing equipment of choice.

CURE

Choose a Cure Option (time & temperature) from the Bondline technical data sheet. Preheat the oven to the temperature of the selected cure option. For optimum cure, do not deviate from the selected cure option. Be sure to allow additional time for holding fixtures to reach cure temperature. Avoid opening oven doors during cure. Large fixtures and/or multiple fixtures may require extended cure time.

Properties

Adhesive Properties
ValueUnitsTest Method / Conditions
Work Life (25°C)2.0weeks-
Hardness90.0Shore D-
Cure Options (125°C)1hour-
Cure Options (150°C)30minutes-
Service Temperature Range-80 to 150°C-
Lap Shear Strength (25°C, Al to Al )5000.0psi-
Specific Gravity1.8--
Glass Transition Temperature (Tg)130.0°C-
Thermal Conductivity0.6W/mK-
Dielectric Strength600.0volts/ mil-
Dielectric Constant (1 KHz)6.4--
Dissipation Factor (1 KHz)0.01--
Volume Resistivity6 x 10¹⁴ohm cm-
Coefficient of Thermal Expansion (Below Tg)45 x 10⁻⁶in/in/°C-
Coefficient of Thermal Expansion (Above Tg)179 x 10⁻⁶in/in/°C-
Weight Loss (TGA, 85°C)Nil%-
Weight Loss (105°C)Nil%-

Safety & Health

Safety

Always wear protective gloves and goggles while handling adhesives. Only work with adhesives in well-ventilated areas, with curing ovens vented outside. For industrial use only.

Packaging & Availability

Availability

Net volume lcc to 5cc, available in disposable 3ce &5cc syringes.

Storage & Handling

Shelf Life
1 (-40°C or Colder)
Storage & Handling

GENERAL INSTRUCTIONS FOR ADHESIVE STORAGE/ USE

FROZEN STORAGE

This adhesive must be stored at (minus) –40°C (°F) or colder at all times. Storing this adhesive at temperatures warmer than (minus) –40°C (°F) will shorten its work life.

DO NOT RE-FREEZE adhesive that has already been thawed

THAWING PROCESS

Remove frozen syringe from freezer. Place in vertical position with lure lock end pointed down during thaw. Adhesive must reach room temperature before use. See chart below based on syringe size.

SYRINGE SIZE THAW TIME
1cc 5 minutes
3cc 10 minutes
5cc 15 minutes
10cc 20 minutes