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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 EGC, mmol/KG on solids   Solvent   
Waterborne difunctional epoxy resins
EPI-REZ Resin 3510-W-60Liquid BPA epoxy4651-5405Water
EPI-REZ Resin 3514-W-56Liquid BPA epoxy4445-4880Water
EPI-REZ Resin 3515-W-60Semi-solid BPA epoxy3636-4444Water
Waterborne modified and multifunctional epoxy resins
EPI-REZ Resin 5040-W-58Epoxy phenol novolac with functionality of 3.64875-5405Water
EPI-REZ Resin 5054-W-65Epoxy phenol novolac with functionality of 3.64875-5555Water
EPI-REZ Resin 5108-W-60Epoxy BPA novolac with functionality of 84000-4760Water

Epoxy Resins for Fiber Sizing for Thermoplastic Matrices

Epoxy Resin Resin Features
Dispersed Resin EGC, mmol/KG on solids   Solvent   
Waterborne difunctional epoxy resins
EPI-REZ Resin 3522-W-60 Solid BPA epoxy 1399-1626Water
EPI-REZ Resin 3540-WY-55Solid BPA epoxy500-625Water/EGMPE
EPI-REZ Resin 3546-WH-53 Solid BPA epoxy 454-526Water/PGME
EPI-REZ Resin 3547-WY-57Solid BPA epoxy500-625Water/EGMPE
Waterborne modified and multifunctional epoxy resins
EPI-REZ Resin 5040-W-58Epoxy phenol novolac with functionality of 3.64875-5405Water
EPI-REZ Resin 5054-W-65Epoxy phenol novolac with functionality of 3.64875-5555Water
EPI-REZ Resin 5108-W-60Epoxy BPA novolac with functionality of 84000-4760Water
EPI-REZ Resin 6006-W-68Epoxy o-cresol novolac with functionality of 5-63920-4650Water
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