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HexPly® EH25 is a high performance, tough 180°C curing matrix for use in Aerospace primary structures. HexPly® EH25 is a self-extinguishing epoxy resin with controlled flow. HexPly® EH25 prepregs are available with fabric and UD tape.

Polymer Name: Epoxy Resins & Compounds

Functions: Prepreg

Technical Data Sheet

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Identification & Functionality

Composite Materials Functions

Features & Benefits

Materials Features
Product Highlights
  • Excellent toughness
  • Self extinguishing (FAR 25B)
  • Controlled flow matrix
  • Curing temperature 150 - 180°C
  • Maximum service temperature of 100°C (in wet conditions)

Applications & Uses

Properties

Physical Form
Cured Properties
ValueUnitsTest Method / Conditions
Tensile strength at 180°C75ISO R527
Tensile Modulus at 180°C3.7GPaISO R527
Strain at 180°C2.4%ISO R527
Glass transition temperature at 180°C180°CDMA
Cured resin Density at 180°C1.33g/cm3

Technical Details & Test Data

Curing Conditions

The ideal cure cycle is 120 min at 180°C, at a pressure between 3 and 7 bar. Alternative cure cycles can be used:
 

Temperature (°C) Time (hours)
150 14
160 8
170 4
180 2

 

Storage & Handling

Storage Life
  • Tack Life @ 23°C 30 days
  • Guaranteed Shelf Life @ -18°C 14 months (maximum, from date of manufacture)