EPOCAST® 1649-1 A/B

EPOCAST® 1649-1 A/B is a two-component, low-density, fast-cure, FST-rated epoxy adhesive and void filler designed for insert potting, ditch potting, and edge filling/reinforcing of honeycomb structures used in aerospace interior applications. Both EPOCAST® 1649-1 A/B are very soft pastes, which can be easily mixed and applied manually or by dual cartridge with static mixer. EPOCAST® 1649-1 A/B sets very quickly at room temperature and can be sanded shortly after application. It is well-suited for aerospace applications requiring low density, high strength, and rapid component assembly.

RTU Product Type: 2K (2 component) Adhesive, Epoxy Adhesive, Syntactic Adhesive, Void Filler

Application Area: Aerospace Interior Application, Aircraft Interior, Ditch Potting Application, Edge Filling Application, Honeycomb Edge Sealing, Honeycomb Structures, Insert Potting Application

Chemical Family: Epoxy & Epoxy Derivatives

Features: Cost Effective, Fast Cure, Flame Retardant, High Modulus, High Strength, Low Density

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Identification & Functionality

Chemical Family
Epoxy & Epoxy Derivatives
RTU Product Type
2K (2 component) Adhesive,
Epoxy Adhesive,
Syntactic Adhesive,
Void Filler
Technologies
Adhesives & Sealants
Product Families
Adhesives & Sealants — Bonding & Sealing Chemistry
Thermosetting Adhesives & Sealants

Features & Benefits

Ready-to-Use Product Features
Cost Effective,
Fast Cure,
Flame Retardant,
High Modulus,
High Strength,
Low Density
Coating
Cured EPOCAST® 1649-1 A/B has a high surface tension of > 72 dyne/cm. It can be coated with various types of organic and water-borne adhesives, paints, inks, etc. with excellent results.
Features
  • Meets FST Requirements
  • Fast Cure
  • 1 Year Shelf Life
  • Excellent Off Ratio Tolerance
  • Maximum 0.74 g/cc Density
  • High Strength and High Modulus
  • Easy Application with Manual Mixing, Dual Cartridge, or Meter Mix Equipment
Machinability
EPOCAST® 1649-1 A/B provides excellent sand-ability once hardened. The minimum cure time prior to sanding will depend on the mass of EPOCAST® 1649-1 A/B being used and on the actual ambient temperature. For a typical 0.25 inches thick honeycomb sandwich edge-fill, sand-able time is about 2 - 3 hours.
Features and Benefits
  • Meets FST Requirements
  • Fast Cure
  • 1 Year Shelf Life
  • Excellent Off Ratio Tolerance
  • Maximum 0.74 g/cc Density
  • High Strength and High Modulus
  • Easy Application with Manual Mixing, Dual Cartridge, or Meter Mix Equipment
  • EPOCAST® 1649-1 A/B void filler can reduce total costs by up to 30% for the application of core reinforcement materials due to its low material density. Compared to competitive products, it is up to 12% lighter, with double the shelf-life to further reduce inventory costs. It also meets FAA flame, smoke and toxicity (FST) requirements for aerospace interiors. Assembly productivity can be increased by up to 50% with EPOCAST® 1649-1 A/B void filler. It provides a simple 2:1 mix ratio, off-ratio mixing tolerance, and allows parts to be cured, sanded and completed in just one working shift.

Applications & Uses

Application Area
Aerospace Interior Application,
Aircraft Interior,
Ditch Potting Application,
Edge Filling Application,
Honeycomb Edge Sealing,
Honeycomb Structures,
Insert Potting Application
Markets
Automotive & Transportation
Applications
Automotive & Transportation — Transportation
Aerospace & Aviation

Properties

Physical Form
Paste
Cure Schedule
2-3 days at 73°F/23°C, or gel at room temperature plus 1-2 hour at 125°F (52°C).

Regulatory & Compliance

Certifications & Compliance
Flame Smoke Toxicity (FST) Compliant
OEM Specifications
Collins Aerospace LCMS-303,
Collins Aerospace MS 3002, Rev 2

Technical Details & Test Data

Coating

Cured EPOCAST® 1649-1 A/B has a high surface tension of min. 72 dyne/cm. It can be coated with various types of organic and water-borne adhesives, paints, inks, etc. with excellent results.

Cure Schedule

2-3 days at 23°C, or gel at room temperature plus 1 - 2 hour at 52°C

Machinability
  • EPOCAST® 1649-1 A/B provides excellent sand-ability once hardened. The minimum cure time prior to sanding will depend on the mass of EPOCAST® 1649-1 A/B being used and on the actual ambient temperature.
  • For a typical 0.25 inches thick honeycomb sandwich edge-fill, sand-able time is about 2 - 3 hours.
Typical Cured Properties
Property Value Unit Test Method Condition
Compressive Strength 6,000 psi ASTM D695 RT , Cured: 2 hours at 52°C
Compressive Modulus 300 ksi ASTM D695 RT, Cured: 2 hours at 52°C
Lap Shear Strength 1,800 psi ASTM D1002 Al/Al, Cured: 2 hours at 52°C
Hardness 72   ASTM D2240 , Shore D Cured: 2 hours at 52°C
Flammability (12-second Vertical Burn) max. 1 second FAR 25.853a Extinguishing time , Cured: 2 hours at 52°C
Flammability (12-second Vertical Burn) max. 1 inch FAR 25.853a Burn length, Cured: 2 hours at 52°C
Flammability (12-second Vertical Burn) No drip second FAR 25.853a Extinguishing time , Cured: 2 hours at 52°C
Smoke Density max. 200 Ds FAR 25.853d in 4 minutes, Cured: 2 hours at 52°C
Toxicity max. 1,000 ppm FAR 25.853d Carbon Monoxide
Toxicity max. 150 ppm FAR 25.853d Hydrogen Cyanide
Toxicity max. 100 ppm FAR 25.853d Hydrogen Fluoride
Toxicity max. 150 ppm FAR 25.853d Hydrogen Chloride
Toxicity max. 100 ppm FAR 25.853d Sulfur Dioxide
Toxicity max. 100 ppm FAR 25.853d Nitrogen Oxides

Packaging & Availability

Packaging Type
Cartridges
Regional Availability
  • Americas
  • Asia Pacific
  • Australia
  • EIMEA

Storage & Handling

Storage Information
EPOCAST® 1649-1 A/B epoxy syntactic adhesive should be stored in a dry place, in its sealed original container, at temperatures between +2°C to +10°C (+35.6°F and +50.0°F), for all package sizes. Under these storage conditions the shelf life is 12 months from date of manufacturing. The product should not be exposed to direct sunlight. Both resin and hardener can individually be mixed prior to use. Material temperatures should be above 65°F (18°C) when mixing. After use, tightly reseal containers.

Other

Appearance
Light blue
Physical Properties
ValueUnitsTest Method / Conditions
Gel Time8.0-10.0 mmASTM D2471 at 25°C, 60g
Specific Gravitymax. 0.74-ASTM D1622