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Epoxy Resins for Fiber Sizing for Composites

EPI-REZ™ 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
EPI-REZ Resin 3510-W-60Liquid BPA epoxy185 - 215 Water
EPI-REZ Resin 3514-W-56Liquid BPA epoxy205 - 225Water
EPI-REZ Resin 3515-W-60Semi-solid BPA epoxy225 - 275Water
Waterborne modified and multifunctional epoxy resins
EPI-REZ Resin 5040-W-58Epoxy phenol novolac with functionality of 3.6185 - 205 Water
EPI-REZ Resin 5054-W-65Epoxy phenol novolac with functionality of 3.6180 - 205Water
EPI-REZ Resin 5108-W-60Epoxy BPA novolac with functionality of 8210 - 250Water
EPI-REZ Resin 5520-W-60Modified solid BPA epoxy with functionality of 2-3480-560Water

Epoxy Resins for Fiber Sizing for Thermoplastic Matrices

Epoxy Resin Resin Features
Dispersed Resin WPE, g/eq on solids   Solvent   
Waterborne difunctional epoxy resins
EPI-REZ Resin 3522-W-60 Solid BPA epoxy 615 - 715 Water
EPI-REZ Resin 3540-WY-55Solid BPA epoxy1600 - 2000Water/EGMPE
EPI-REZ Resin 3546-WH-53 Solid BPA epoxy 1900 - 2200Water/PGME
EPI-REZ Resin 3547-WY-57Solid BPA epoxy1600 - 2000Water/EGMPE
Waterborne modified and multifunctional epoxy resins
EPI-REZ Resin 5040-W-58Epoxy phenol novolac with functionality of 3.6185 - 205 Water
EPI-REZ Resin 5054-W-65Epoxy phenol novolac with functionality of 3.6180 - 205Water
EPI-REZ Resin 5108-W-60Epoxy BPA novolac with functionality of 8210 - 250Water
EPI-REZ Resin 6006-W-68Epoxy o-cresol novolac with functionality of 5-6215 - 255Water
EPI-REZ Resin 5520-W-60Modified solid BPA epoxy with functionality of 2-3480-560Water
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