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Epoxy Resins for Fiber Sizing for Composites

EPIKOTE™ waterborne epoxy resins are widely used as film formers for sizing reinforcing fibers to enhance fiber and composite processing and improve composite performance. Features and benefits include:

  • Suitable for sizing glass, carbon and other reinforcing fibers, both continuous and chopped
  • Protects fibers during manufacture and handling
  • Enhances fiber bundle integrity
  • Facilitates wetting during composite fabrication, for improved composite performance
  • Compatible with many thermoset and thermoplastic matrix systems
  • Wide variety of epoxy film former options enable customization of sizing systems

Epoxy Resins for Fiber Sizing for Thermoset Matrices

Epoxy Resin Resin Features
Dispersed Resin WPE, g/eq on solids   Solvent   
Waterborne difunctional epoxy resins
EPIKOTE Resin 3510-W-60ALiquid BPA epoxy185 - 215 Water
EPIKOTE Resin 3514-W-56ALiquid BPA epoxy205 - 225Water
EPIKOTE Resin 3515-W-60ASemi-solid BPA epoxy225 - 275Water
Waterborne modified and multifunctional epoxy resins
EPIKOTE Resin 5040-W-58AEpoxy phenol novolac with functionality of 3.6185 - 205 Water
EPIKOTE Resin 5054-W-65AEpoxy phenol novolac with functionality of 3.6180 - 205Water
EPIKOTE Resin 5108-W-60AEpoxy BPA novolac with functionality of 8210 - 250Water

Epoxy Resins for Fiber Sizing for Thermoplastic Matrices

Epoxy Resin Resin Features
Dispersed Resin WPE, g/eq on solids   Solvent   
Waterborne difunctional epoxy resins
EPIKOTE Resin 3522-W-60ASolid BPA epoxy 615 - 715 Water
EPIKOTE Resin 3540-WY-55ASolid BPA epoxy1600 - 2000Water/EGMPE
EPIKOTE Resin 3546-WH-53ASolid BPA epoxy 1900 - 2200Water/PGME
EPIKOTE Resin 3547-WY-57ASolid BPA epoxy1600 - 2000Water/EGMPE
Waterborne modified and multifunctional epoxy resins
EPIKOTE Resin 5040-W-58AEpoxy phenol novolac with functionality of 3.6185 - 205 Water
EPKOTE Resin 5054-W-65AEpoxy phenol novolac with functionality of 3.6180 - 205Water
EPIKOTE Resin 5108-W-60AEpoxy BPA novolac with functionality of 8210 - 250Water
EPIKOTE Resin 6006-W-68AEpoxy o-cresol novolac with functionality of 5-6215 - 255Water
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