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

TEGO Airex 920 Defoamer

TEGO Airex 920 is a German-origin high-performance defoamer, engineered with advanced thermo-mechanical properties to secure a competitive edge. It appears as a transparent amber liquid with a viscosity of 200-400 mPa·s, demonstrating ultra-wide compatibility in varnish systems and flow coating processes. Achieving ≥99.8% microfoam elimination at a dosage of 0.04%-0.2%, it is certified by REACH, ISO 9001, and GB 30981-2020. This defoamer enhances gloss (60°≥97 GU) and weatherability (QUV 6,000h ΔE≤0.5) with a surface tension as low as 22.5 dyn/cm (in 0.3% solution).

Features Of TEGO Airex 920 Defoamer

  1. Universal Compatibility: Maintains stability in 15-90% solid epoxy/acrylic/polyester systems, adapting to a broad range of formulation solid contents and resin types.

  2. Zero Silicone Risk: Passes GC-MS/FTIR tests with no siloxane-related defects, eliminating concerns of silicone contamination or surface flaws in sensitive applications.

  3. Instant Defoaming: Features 0.2 μm organic particles that eliminate 0.8 μm bubbles in 0.7 seconds (per ASTM D892-XXII standards), ensuring rapid and efficient foam control.

  4. Radiation-Curing Optimized: Exhibits no yellowing (ΔYI≤0.2) under UV-LED (385-405nm) or electron beam (EB, ≥300kGy) curing, making it ideal for radiation-curing systems where color stability is critical.

Typical Applications Of TEGO Airex 920 Defoamer

  1. Automotive Clearcoats: Achieves a DOI (Distinctness of Image) ≥99 in ≥80% solid acrylic-amine spray systems, ensuring a high-gloss, mirror-like finish for automotive clear coatings.

  2. Wood Flow Coating: Enables ≥600 grit sanding in waterborne PU coatings at line speeds ≥80 m/min, enhancing smoothness and post-processing quality in wood finishing.

  3. Electronic Encapsulants: Eliminates voids in ≥100,000 mPa·s solvent-free epoxy (with thermal conductivity ≥0.8 W/m·K), ensuring reliable protection and heat dissipation for electronic components.

Specifications Of TEGO Airex 920 Defoamer

Type
Organic polymer solution defoamer
Appearance
Transparent amber liquid
Active Content
Proprietary organic polymer (24%)
Solvent
Low-aromatic solvent (aniline point ≥85°C)
Dynamic Viscosity
200-400 mPa·s
pH Range
3-12
Density
0.95-1.05 g/cm³
Surface Tension
22.5 dyn/cm
Flash Point (PMCC)
≥45°C
Compatible Systems
Solvent/solvent-free/radiation-curing
Addition Stage
Letdown phase or inline dosing
Shelf Life
24 months (sealed, 0-50°C)
Packaging
20kg/galvanized drum or 200kg/IBC tote


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