Substrate wetting additive STD-249
Coating Additives 2025-03-12
Composition: Polyether modified silicone oil
Appearance: light yellow viscous liquid
Active ingredient: 100%
Solvent: NoneScope of Application:
Suitable for waterborne wood coatings, waterborne industrial coatings and UV light curing coatings, inks and other systems
| Category | Details |
|---|---|
| Product Name | STD-249 Silicone-Based Wetting Additive |
| Chemical Type | Polysiloxane copolymer with hydrophilic modification |
| Key Applications | – Low-Surface-Energy Substrates: Fluoropolymers, silicones – High-Temperature Coatings: Powder coatings, ceramic inks – Composite Materials: Carbon fiber, glass fiber sizing |
| Function | Reduces interfacial tension for uniform liquid penetration |
| Advantages | – Wetting Speed: Rapid spread on PTFE/PET within 5 sec – Thermal Stability: Effective up to 250°C – Chemical Resistance: Inert to acids/bases |
| Technical Data | – Appearance: Clear amber liquid – Active Content: 60% – Viscosity: 200-500 cPs – Surface Tension: 21 mN/m @1% concentration |
| Usage Guidelines | – Add Rate: 0.2-1.5% by weight – Mixing: High-speed dispersion – Storage Temp: -20°C to 40°C |
| Performance | – Contact Angle Reduction: From >110° to <20° on silicone rubber – Reworkability: Retains activity after 3 freeze-thaw cycles |
| Safety | – Handling: Avoid contact with eyes – Flash Point: >100°C – Disposal: Incinerate per local regulations |
| Certifications | Complies with FDA 21 CFR 175.300 for food contact coatings |
