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Description for PermaBond MT3821
A 2:1, two-part, modified epoxy adhesive designed for sealing and bonding. It has excellent adhesion to Nylon, ABS, Polycarbonate and other plastics as well as a variety of different metals, Full cure at room temperature.Application Type Adhesive, Sealing 1 Part or 2 Part 2-Part Material Form Thixo Paste Substrate ABS, Polycarbonate, Nylon, Other Plastics, Variety of Different Metals, Aluminum, Stainless Steel, Acrylic, Acrylic, FRP Glass Polyester, FRP Glass Epoxy, Mild steel, Copper alloys, Aluminium alloys Industry Aerospace , Automotive , Boat Building , Trains , Wind Turbines, Trams Manufacturer PermaBond Chemistry Epoxy: Modified Epoxy Cure Method 2-Part Cure, Heat Cure, Room Temperature cure Cure Temperature (°C) 25, 20 to 25 Room Temperature Gap Fill (in) Maximum gap fill 5 mm 0.2 in Cure Time (min) >4,320 Color Black Low Temperature Resistance (°C) -40 -
Technical Data for PermaBond MT3821
Overview
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1 Part or 2 Part
- 2-Part
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Material Form
- Paste - Thixo Paste
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Substrate
- Metal - Variety of Different Metals
- Aluminum - Aluminium alloys
- Steel - Mild steel
- Copper - Copper alloys
- Plastic - Other Plastics
- ABS
- Polycarbonate
- Nylon
- Acrylic (PMMA) - Acrylic, Acrylic
- Epoxy - FRP Glass Epoxy
- Polyester - FRP Glass Polyester
- Stainless Steel
- Other - Carbon Fibre
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Industry
- Wind Energy - Wind Turbines
- Marine - Boat Building
- Rail - Trains , Trams
- Automotive - Automotive
- Sporting Equipment - Sporting Equipment
- Aerospace - Aerospace
- Construction - Buildings
- Furniture / Wood-Working - Street Furniture
- Other - Shop Fitting
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Chemistry
- Epoxy : Modified Epoxy
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Application Method
- Dispenser - Dispensing gun, Static mixing nozzle
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Cure Method
- Room Temperature / Air Dry - Room Temperature cure
- Heat - Heat Cure
- 2-Part Cure
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Color
- Black
Specifications
Cure Specs
Cure Temperature (°C) 25, 20 to 25 Room Temperature Test Method Gap Fill (in) Maximum gap fill 5 mm 0.2 in Cure Time (min) >4,320 Test Method Fixture or Handling Strength Time (min) 60 to 90 Test Method Work / Pot Time (min) 10 to 20 Test Method Mix Ratio 2:1 (by volume), 138:85 (by weight) Bond Strength
General Bond Strength (psi) Excellent Peel Strength (piw) 140-160 N/25mm Test Method Shear Strength (psi) 580 to 1,015, 870 to 1,160, 580 to 870, 290 to 725, 290 to 580, 580 to 870, 435 to 725, 725 to 1,015, 725 to 1,015, 870 to 1,160 Test Method Material Resistance
Low Temperature Resistance (°C) -40 Hardness
Shore A Hardness 55 to 85 Shore D Hardness 20 to 30 Elongation (%) 100 to 150 Flexibility Soft, Flexible Business Information
Shelf Life Details Stored in original unopened containers Shelf Life Temperature (°F) 41 to 77 Shelf Life (mon) 12 Not Good For
Don't Use With Strong oxidizing materials. -
Best Practices for PermaBond MT3821
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Surface Preparation
Surfaces should be clean, dry and grease-free before applying the adhesive. Use a suitable solvent (such as acetone or isopropanol) for the degreasing of surfaces. Some metals such as aluminium, copper and its alloys will benefit from light abrasion with emery cloth (or similar), to remove the oxide layer.
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Application
Measure volumetrically 2 parts resin to 1 part hardener. Mix thoroughly taking care not to entrap air. Adhesive can be applied and mixed by automated dispensing equipment. If using cartridges, put cartridge in dispensing gun and affix static mixing nozzle. 2. Apply material. If potting
take care to fill component and not entrap air. 3. If bonding a joint, assemble the parts. Parts must be joined within 10-20 minutes of mixing the two epoxy components
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Curing
Full cure will be obtained after a minimum of 72 hours at 25°C (77°F). Heat can be used to accelerate the curing process
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Comparable Materials for PermaBond MT3821
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Cure Time Test Methods
Cure Time | Test Method |
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>4,320 min |
Cure Temperature Test Methods
Cure Temperature | Cure Time Test Method |
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25°C | |
20 to 25°C Room Temperature | Full Cure |
Work / Pot Time Test Methods
Work / Pot Time | Test Method | Temperature |
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10 to 20 min | Usable / pot life | 25°C |
Fixture or Handling Strength Time Test Methods
Fixture or Handling Strength Time | Fixture-Handling Strength Test Method | Fixture-Handling Strength Time Temperature |
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60 to 90 min | Handling time to 0.1 N/mm² | 25°C |
Shear Strength Test Methods
Shear Strength | Substrate | Test Method |
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580 to 1,015 psi | Mild Steel | ISO4587, Strength results will vary depending on the level of surface preparation and gap. |
870 to 1,160 psi | Aluminium | ISO4587, Strength results will vary depending on the level of surface preparation and gap. |
580 to 870 psi | ABS | ISO4587, Strength results will vary depending on the level of surface preparation and gap. |
290 to 725 psi | Acrylic | ISO4587, Strength results will vary depending on the level of surface preparation and gap. |
290 to 580 psi | Nylon | ISO4587, Strength results will vary depending on the level of surface preparation and gap. |
580 to 870 psi | Polycarbonate | ISO4587, Strength results will vary depending on the level of surface preparation and gap. |
435 to 725 psi | PVC | ISO4587, Strength results will vary depending on the level of surface preparation and gap. |
725 to 1,015 psi | FRP Glass Epoxy | ISO4587, Strength results will vary depending on the level of surface preparation and gap. |
725 to 1,015 psi | FRP Glass Polyester | ISO4587, Strength results will vary depending on the level of surface preparation and gap. |
870 to 1,160 psi | Carbon Fibre | ISO4587, Strength results will vary depending on the level of surface preparation and gap. |
Peel Strength Test Methods
Peel Strength | Substrate |
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140-160 N/25mm | Aluminium |