1. Working Principle
Electrostatic filter cotton utilizes electrostatic attraction to capture airborne particulate matter, significantly enhancing filtration efficiency through charged fiber media.
2. Performance Advantages
- Enhanced Filtration: Capable of trapping sub-micron particles (superior to mechanical filtration)
- Energy Efficiency: Low airflow resistance (typically 30-50% lower than HEPA filters)
- Reusability: Washable designs allow 15-20 cleaning cycles (varies by manufacturer)
- Economic Benefit: 60-70% cost reduction compared to disposable filters over 3-year lifecycle
3. Technical Limitations
- Maintenance Requirements:
- Monthly cleaning recommended for optimal performance
- 15-20% efficiency degradation after each wash cycle
- Environmental Sensitivity:
- Relative humidity >70% reduces electrostatic effect by 40-60%
- Ozone emission <0.01 ppm (meets UL867 standards)
4. Industrial Applications
- Commercial Air Purification:
- MERV 11-13 equivalent (per ASHRAE 52.2)
- Particulate capture down to 0.3μm @ 85-95% efficiency
- Cleanroom Technology:
- ISO Class 5-7 environments
- Compliant with FDA 21 CFR Part 11 for pharma applications
- Industrial Process Filtration:
- Powder coating booths: 99% capture of 5-20μm particles
- Laser cutting fume extraction
5. Material Specifications
- Base Material: Polypropylene/polyester hybrid fibers
- Surface Charge Density: 10-15 μC/m²
- Typical Thickness: 10-25mm
- Operating Temperature Range: -30°C to 80°C
6. Comparative Performance Data
| Parameter | Electrostatic Cotton | Mechanical Filter |
|------------------|----------------------|-------------------|
| Initial Efficiency | 85%@0.3μm | 65%@0.3μm |
| Pressure Drop | 25Pa @ 2.5m/s | 45Pa @ 2.5m/s |
| Service Life | 3-5 years | 6-12 months |
| Energy Savings | 30-40% | Baseline |
Note: All performance data based on standard test conditions (25°C, 50% RH)
https://www.amdfil.com/electrostatic-filter-cotton-technical-overview.html
