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

TEGO Foamex 20 Defoamer

TEGO Foamex 20, a German polyether-silicone nanocomposite, is a milky homogeneous liquid with 220-550 mPa·s viscosity. It stays active stably under pH 5-12 and ≤80°C, curbing 94% of foam at 0.08%-0.3% dosage. Certified by REACH, ISO 9001 and GB 18582-2020, it improves leveling (brush mark index ≤0.4 grade) and weather resistance (QUV 1,500h ΔE≤1.0) in water-based architectural coatings and waterproofing systems.

Features Of TEGO Foamex 20 Defoamer

  1. Nano-Scale Defoaming: 0.25 μm hybrid particles clear bubbles within 3 seconds (per ASTM D892-VIII).

  2. Process Compatibility: Works with ≥250 bar airless spray and ≤25 m/min roller coating.

  3. Low-Temperature Stability: No crystallization after 12 months at 5°C (viscosity change ≤3%).

  4. VOC-Free: Meets HJ 2537-2014 standards (VOC ≤1.5 g/L).

  5. Economical: Cuts usage by 45%, saving ¥150-220/ton.

Typical Applications Of TEGO Foamex 20 Defoamer

  1. Exterior Elastic Coatings: Limits dirt pick-up to ≤5% in styrene-acrylic with ≥350% elongation.

  2. Bathroom Waterproofing: Reduces drying time by 30% in systems with ≥1.2 MPa penetration.

  3. Concrete Protective Paints: Endures ≥1,000h salt spray in epoxy emulsions with ≥60% solid content.

  4. Floor Sealing Primers: Reaches ≥95% pore filling in solvent-free systems with ≥5 MPa adhesion.

Specifications Of TEGO Foamex 20 Defoamer

Type
Polyether-silicone nanocomposite emulsion
Appearance
Milky homogeneous liquid
Active Content
Polyether-silicone + nano-enhancer (22%)
Dynamic Viscosity
220-550 mPa·s
pH Range
5-12
Density
1.03-1.10 g/cm³
Surface Tension
23.8 dyn/cm
Freeze-Thaw Stability
No stratification (5 cycles, -20°C~50°C)
Addition Stage
Pre-dispersion or letdown phase
Shelf Life
24 months (sealed, 0-40°C)
Packaging
25kg/PE drum or 200kg/IBC tote


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