DOWSIL SM 5511 is a siloxane-silica composite defoamer crafted for harsh industrial environments. It presents as a milky liquid with a viscosity of 800-1,500 mPa·s, maintaining stable activity across a pH range of 2-12 and at temperatures up to 80°C. With a dynamic surface tension as low as 24 dyn/cm, it rapidly collapses micron-level foam and provides over 6 hours of foam suppression. ISO 9001 certified, it reduces mineral oil defoamer usage by 18% in coatings and textile applications while improving production uniformity.
Rapid Defoaming Action: Nano siloxane particles break down foam within 3 minutes, making it ideal for high-speed dispersion processes in industries like coatings and textiles.
Harsh Condition Resistance: Withstands extreme conditions including pH 2-12, high salinity, and 80°C heat without any degradation in performance.
Broad Compatibility: Seamlessly compatible with acrylic and polyurethane systems, effectively minimizing coating defects such as pinholes or uneven surfaces.
Eco-Friendly Compliance: Free of APEO (Alkylphenol Ethoxylates) and with VOC (Volatile Organic Compounds) content <50g/L, it meets the requirements of EU REACH and China GB/T 35602-2017 standards.
Coatings: Controls foam in both water-based and solvent-based coatings. When dosed at 0.1%-0.3%, it increases coating gloss by 15%, enhancing the visual and functional quality of the finished product.
Textile Dyeing: Reduces oil stains in dyeing slurries, ensuring cleaner fabric surfaces. It complies with China GB 4806.11-2016, meeting safety standards for textile-related materials.
Wastewater Treatment: Improves the efficiency of industrial effluent processing, with a recommended dosage of 0.05%-0.2%, helping to reduce foam-related disruptions in treatment systems.
Type | Siloxane-silica composite defoamer |
Appearance | Milky liquid |
Active Content | Polydimethylsiloxane + silica |
Dynamic Viscosity | 800-1,500 mPa·s |
pH Range | 2-12 |
Surface Tension (0.5% solution) | 24 dyn/cm |
Recommended Dosage | 0.02%-0.3% (on total system) |
Packaging | 20kg/drum or 200kg/IBC |
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China