Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Technologies
- Product Families
Features & Benefits
- Labeling Claims
Applications & Uses
- Applications
- Application Method
- Compatible Substrates & Surfaces
- Cure Method
- Application
Surface Preparation
All bonding surfaces must be thoroughly cleaned, degreased and dried. For plastic surfaces, remove mold release if any.
Preparation of Adhesive
Weigh each part accurately and mix slowly to avoid entrapment of air. Note: Pot life can be lengthened substantially if shallow mixing vessels are used or smaller batches are mixed. Cover mixed material to prevent water absorption Depending upon the end use service requirements of the completed bond, Magna-Tac A-39 may be used with hardeners which set at room temperatures, at moderate temperatures and at elevated temperatures.
Mix Ratio
Magna-Tac A39 Part A - 70 parts Magna-Tac A39 Part B - 20 parts.
Application
Mixed Magna-Tac A-39 may be applied with trowel, spatula, knife, etc. Apply enough mixed adhesive to fill all cavities and depressions in both surfaces being bonded and to leave about 4 additional mils of adhesive on each side. After proper mating of the components (with slight squeeze out of adhesive), optimum bond line thickness should range from .003 to .006 inch. (Very heavy glue lines may be tolerated up to 0.010 inch - and the adhesive may be cured in heavy sections with very little shrinkage and with good resultant bond strength). Assemble the parts immediately after spreading the adhesive since there are no volatile solvents present to be evaporated.
Clean-up solvent: Do not add thinner to this adhesive. Methyl Ethyl Ketone may be used for cleaning equipment or wiping up spilled adhesive before curing.
- Curing Information
Cure Time
Mixing Ratio (by weight) Properties Pot Life at 77°F Aver. Tensile Strength
Part A
Part B7 PARTS
2 PARTSFor best balance
of properties.30 min
(175 gms)2500 psi Heat Curing
75% of cure is attained in 24 hours. To accelerate the cure, any of the following cycles may be used:
Temperature Cure Time 150°F 60 minutes 200°F 25 minutes 250°F 15 minutes Where military specification qualification is necessary, A39 must be cured for 1 hour at 164 F.
- Industry Applications
Aerospace
- Fabrication and repair of airframe parts
- Fuel Management Systems.
- Base
Modified epoxy
Properties
- Physical Form
- Diluent
- Do not dilute
- Typical Properties
- Composition
| Value | Units | Test Method / Conditions | |
| Viscosity | Paste | — | — |
| Weight Per Gallon | 9.5 | lbs | — |
| Strength | 2500.0 | psi | — |
| Value | Units | Test Method / Conditions | |
| Solid Content | 100.0 | % | — |
Regulatory & Compliance
- Certifications & Compliance
- Compliance
Magna-Tac A-39 meets military specification MMM-A-134 Type 1.
Packaging & Availability
- Container Sizes
- 1 quart cans
- 1 gallon cans
- 5 gallon pails
- 55 gallon drums
Storage & Handling
- Shelf Life
- 1 year