EY3804 is an epoxy resin known for its excellent performance in the composite field repair applications. It is considered a permanent solution, capable of withstanding service temperatures effectively. This epoxy resin exhibits exceptional performance in hot water immersion and offers excellent thermal properties.

Chemical Family: Epoxy & Epoxy Derivatives

Compatible Substrates & Surfaces: Composites, Metal, Plastics

Features: Chemical Resistant, Good Thermal Stability, High Performance, High Temperature Strength, Low Temperature Curing, Low Viscosity

Technical Data Sheet
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Enhanced TDS

Identification & Functionality

Features & Benefits

Ready-to-Use Product Features
Features and Benefits
  • Composite field repair adhesive (permanent for service temperatures up to 200°F)
  • Excellent Bonding to Metals, Composites, Coatings, and Most Plastics
  • Excellent Chemical Resistance
  • Suitable for MMD Dispensing Equipment
  • Excellent Thermal Performance
  • 100% Reactive
  • Room Temperature Cure

Applications & Uses

Markets
Applications
Compatible Substrates & Surfaces
Segment
Adhesive & Sealant End Applications
Application Instructions
  • Surfaces must be clean, dry and free from grease, oil, paint, wax and weak oxide films and other surface contaminants. Chemical etching, sanding or grit blasting often gives the best results. Bring both components to room temperature prior to mixing. Just prior to using, blend the two components, Part A and Part B, in the ratio above. Mechanical mixing is preferable, but should be carried out at slow speeds (<300 rpm), taking as little air as possible into the adhesive batch. Spread a thin layer of the mixed adhesive on one or both of the parts to be bonded. Once the adhesive is applied, no open time is necessary. The surfaces can be assembled immediately. Parts should be assembled while the adhesive is still wet to the touch before it sets. The individual parts, the ambient temperature and the adhesive itself will dictate the open time permitted.
  • Recommended Application: Composite Repair

Properties

Physical Form
Appearance
Grey liquid
Cured Properties
ValueUnitsTest Method / Conditions
Specific Gravity (Mixed)max. 1.11--
Gel Time40 - 44min-
Service Temperature (Continuous Range)(-)40 to 200°F-
Hardness82-Shore D
Elongation at Break4%ASTM D638
Uncured Properties
ValueUnitsTest Method / Conditions
Viscosity (Part A, Base)5,000 - 7,000cPs-
Mix Ratio (Part A, Base)100wt%-
Viscosity (Part B, Hardener)1,300 - 2,000cPs-
Mix Ratio (Part B, Hardener)66wt%-
Viscosity (Mixed)3900cPs-
Tensile Properties
ValueUnitsTest Method / Conditions
Aluminum (at 25°C, acid etched)26.9MPaASTM D1002
Aluminum (at 90°C, acid etched)17.32MPa-
Aluminum (at 120°C, acid etched)11.93MPa-
Carbon Fiber Reinforced Polymer (Unidirectional)41.3MPa-
Laminate properties
ValueUnitsTest Method / Conditions
Compression Strength (12 plies of Thornel 300, 3K 12.5 x 12.5 plain weave, 0.009 in. per ply. Vacuum bagged and cured 2 hours at 130*F then 2 hours at 250*F)47000psi-
Compression Modulus (12 plies of Thornel 300, 3K 12.5 x 12.5 plain weave, 0.009 in. per ply. Vacuum bagged and cured 2 hours at 130*F then 2 hours at 250*F)6100000psi-
Flexural Strength (12 plies of Thornel 300, 3K 12.5 x 12.5 plain weave, 0.009 in. per ply. Vacuum bagged and cured 2 hours at 130*F then 2 hours at 250*F)113.5psi-
Flexural Modulus (12 plies of Thornel 300, 3K 12.5 x 12.5 plain weave, 0.009 in. per ply. Vacuum bagged and cured 2 hours at 130*F then 2 hours at 250*F)3200000psi-
Tensile Strength (12 plies of Thornel 300, 3K 12.5 x 12.5 plain weave, 0.009 in. per ply. Vacuum bagged and cured 2 hours at 130*F then 2 hours at 250*F)7800000psi-
Interlaminate Shear Strength (12 plies of Thornel 300, 3K 12.5 x 12.5 plain weave, 0.009 in. per ply. Vacuum bagged and cured 2 hours at 130*F then 2 hours at 250*F)6psi-
Cure Properties
Conditions Time
Full Cure at 23°C 10-14 days
Full Cure at 66°C 3 hours

 

Packaging & Availability

Country Availability
Regional Availability
  • Europe
  • India/MiddleEast/Africa (IMEA)

Storage & Handling

Shelf Life
6 months (when stored below 39°F), 3 months (when stored between 40 - 80°F), 12 months (when stored up to 80°F)
Storage and Shelf Life Information
  • Product should be stored in a cool dry place out of direct sunlight. Shelf life is based on proper product storage conditions and temperature. Exposure to elevated temperatures can reduce shelf life.
  • Shelf Life Part A when stored 39°F or below is 6 months. Between 40°F and 80°F shelf life is 3 months.
  • Shelf Life Part B: 12 months when stored up to 80°F.
  • Note: Part B may be stored below 40°F with Part A without effecting shelf life.