Electrostatic Cotton Media
Main Information
Material Composition:Made from polypropylene (PP) staple fibers.
Technologies to Enhance Filtration Efficiency:Combines electrostatic and fiber filtration technologies to maintain an efficient charged state over time, effectively addressing the issue of electrostatic decay in electret filter materials.
Ultrafine Electrostatic Fibers:Made from polypropylene, these fibers are characterized by high efficiency, low resistance, high dust holding capacity, and long service life, enabling effective removal of cigarette smoke, pollen, fine dust, and other particles.
Electrostatic Cotton Media
The application of Electrostatic Cotton Media in air filtration materials is primarily highlighted by its high-efficiency filtration performance, low pressure drop characteristics, and ultra-high dust holding capacity. Electrostatic Cotton Media is typically made of polypropylene staple fibers and manufactured through a needle punching process. This material features a unique charge technology that minimizes charge degradation effects, thereby maintaining consistent filtration efficiency over time. The fiber structure of the electrostatic cotton media is relatively loose, forming a “cotton pad,” which helps reduce pressure drop while providing exceptional dust holding capacity.
Material Composition
- Particulate filter media are typically made of non-woven fabrics, with their filtration layer mainly consisting of electrostatic cotton or a melt-blown composite fiber framework.
- Electrostatic cotton media is typically made from polypropylene staple fibers and processed through a needle punching technique. This material not only possesses unique charge technology that minimizes charge degradation effects but also maintains consistent filtration efficiency over time. The needle punching process results in a loose fiber structure, resembling a “cotton pad,” which helps reduce pressure drop while offering exceptional dust holding capacity.
Electrostatic Properties and Performance Advantages
Electrostatic Particle Capture: Electrostatic cotton media leverages mechanical fiber assembly with embedded positive and negative charges on the fiber surface to create an electrostatic field that captures particles. This mechanism provides better filtration performance than traditional needle-punched cotton.
Low Resistance and High Dust Holding Capacity: The loose and uniform fiber structure of electrostatic cotton media helps reduce air resistance during flow while maintaining high dust capture capacity.
Efficient Filtration Performance: Electrostatic filter cotton not only boasts high filtration efficiency and low resistance but also offers a longer lifespan compared to equivalent filtration materials.
Washable and Durable: Electronic air purifiers made with electrostatic filter cotton can be washed and used for an extended period with very low pressure loss.
Eco-friendly and Sustainable: Electrostatic filter cotton can be manufactured by recycling plastics and other synthetic materials, contributing to reduced environmental impact.
Standards and Testing Methods
To ensure the quality and performance of electrostatic cotton media, a series of standards and testing methods need to be followed. Among them, ISO 3915:2011 specifies test methods for evaluating the antistatic properties of plastic materials, including calculating resistivity and assessing aerosol deposition. IEC 61340-5-1 and ANSI/ESD S20.20, on the other hand, outline the necessary antistatic performance and quality requirements that products must meet.
Applications Scope
Electrostatic cotton media finds a broad range of applications, spanning across automotive filters, air purifier cartridges, industrial filters, dust collection bags, respirators, fresh air and HVAC systems, and central air conditioners. In these diverse applications, electrostatic cotton media stands out by significantly enhancing filtration efficiency, prolonging the lifespan of filter cartridges, and reducing maintenance costs.
Enhancing Filtration Efficiency and Extending Filter Life
Combination of Electrostatic and Fiber Filtration: By enhancing fiber filtration through an electric field, the fiber dielectric material maintains an efficient charged state over time, effectively addressing the issue of electrostatic decay in electret filter materials.
Ultrafine Electrostatic Fibers Made of Polypropylene: These fibers are characterized by high efficiency, low resistance, high dust holding capacity, and long lifespan, enabling efficient removal of cigarette smoke, pollen, fine dust, and other particles.
Example of Main Product Properties:
| Material composition | filament + melt-blown + activated carbon 0075 | Filament + active carbon + static fabric 016G | Filament + active carbon + static fabric 011 |
|---|---|---|---|
| Colour | white | Green | White |
| Weight | 390+0.1mm | 500±25 g/m2 | 300±25 g/m2 |
| Thickness | 1.8±0.15 mm | ||
| Filter Efficiency | ≥98% | 2.5μm≥90% 10Pa | 0.3μm≥97% 18Pa |
| Ventilation Property | 1500+300L/sqm.S (ENISO9237) | 700±100L/m2.S | 500±100L/m2.S |
| Dust Holding | 350g/sqm | 500g/m2 | 500g/m2 |
| Pore Size | Max. 150um Min. 130um | ||
| Tensile Strength | md 250 N/5cm | md 240 N/5cm | md 240 N/5cm |
| ISO 9073-3 | cd 235N/5cm | cd 240N/5cm | cd 240N/5cm |
| Tear Strength | md 130N; cd 130N | md 130N; cd 130N | md 130N; cd 130N |
| ISO 13937 | |||
| Heat Strength | >130ºC | >120ºC | >120ºC |
| Width | 50-100 cm | 50-100 cm | 50-100 cm |
| Roll Length | 50-1000 m | 50-1000 m | 50-1000 m |
Characteristics:Uniform Fibre distribution; Equal physical values in all directions; High air permeability for sufficient filtering request; Environmental protection and efficient good permeability low resistance filter material.
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