Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

DOWSIL SM 5511 Defoamer

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.

Product Information of DOWSIL SM 5511 Defoamer

  1. 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.

  2. Harsh Condition Resistance: Withstands extreme conditions including pH 2-12, high salinity, and 80°C heat without any degradation in performance.

  3. Broad Compatibility: Seamlessly compatible with acrylic and polyurethane systems, effectively minimizing coating defects such as pinholes or uneven surfaces.

  4. 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.

Areas of Application of DOWSIL SM 5511 Defoamer

  1. 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.

  2. 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.

  3. 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.

Specifications Of DOWSIL SM 5511 Defoamer

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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