Substrate wetting additive STD-249
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 |
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