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

TEGO Foamex 805 Defoamer

TEGO Foamex 805, a German polyether-silicone/nanosilica compound defoamer, is a milky homogeneous liquid with 1,200-2,000 mPa・s viscosity. It stays stably active under pH 2-12 and ≤90°C, curbing 85% of foam at 0.02%-0.08% dosage. Certified by REACH, ISO 9001 and GB 30981-2020, it enhances weather resistance (QUV 1,500h ΔE≤0.8) and adhesion (cross-cut test 0 级) in high-viscosity industrial coatings and UV inks.

Features Of TEGO Foamex 805 Defoamer

  1. Extreme Viscosity Adaptability: Maintains full dispersion in ≥150 KU systems (Hegman ≤8 μm).

  2. Nano-Scale Defoaming: 0.7 μm hybrid particles clear bubbles in 6 seconds (per ASTM D892-VII).

  3. High-Temperature Stability: Viscosity change ≤3% during 90°C processing.

  4. Non-Migrating Property: Passes EN 71-3 toy safety standard for surface residue.

  5. Cost-Saving: Reduces usage by 60%, saving ¥230-300/ton.

Typical Applications Of TEGO Foamex 805 Defoamer

  1. Wind Blade Gelcoats: Controls porosity ≤0.03% in vinyl ester infusion.

  2. Automotive OEM Paints: Reaches DOI≥92 in ≥100 μm 3C1B processes.

  3. Gravure Lamination Inks: Increases color density by 0.5 OD on PET at ≥600 m/min.

  4. Self-Leveling Floors: Achieves ≤0.01 pinholes/m² with 6-minute flow time.

Specifications Of TEGO Foamex 805 Defoamer

Type
Polyether-silicone/nanosilica composite emulsion
Appearance
Milky homogeneous liquid
Active Content
Modified polyether-silicone + nanosilica (30%)
Dynamic Viscosity
1,200-2,000 mPa·s
pH Range
2-12
Density
1.06-1.14 g/cm³
Surface Tension
21.8 dyn/cm
Thermal Stability
No stratification (90°C/8h)
Recommended Dosage
0.02%-0.08% (by total weight)
Shelf Life
24 months (sealed, 5-40°C)
Packaging
25kg/galvanized drum or 200kg/IBC tote


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