Defoamer for Waterborne Systems

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Key Features

  • Silicone-free — no surface contamination
  • Effective at low dosage 0.05-0.3%
  • Compatible with anionic and nonionic systems
  • Does not affect fiber-matrix adhesion

Defoamer for waterborne composite systems including glass fiber sizing baths, aqueous silane coupling agent solutions, and water-based binder systems. Silicone-free grades prevent surface contamination in fiber treatment operations. Effective at low dosage (0.05-0.3% by weight), compatible with anionic and nonionic surfactants. Does not affect fiber-matrix interfacial adhesion.

Specifications

ParameterValue
AppearanceClear to slightly hazy liquid
Active Content>95%
Density (25°C)0.95-1.05 g/cm3
pH (1% solution)6.5-8.0
Viscosity (25°C)50-500 mPa·s

Applications

Glass fiber sizing bath defoamingAqueous silane coupling agent solutionsWater-based CSM binder systemsWaterborne epoxy primer systemsAqueous filler dispersion defoaming

FAQ

Yes. Use silicone-free grades to avoid contaminating fiber surfaces, which could impair silane coupling agent effectiveness. Dosage: 0.05-0.2% in sizing bath.

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