PTFE filter membrane material

PTFE Filter Membrane Material
PTFE filter membrane material is a filtration medium based on polytetrafluoroethylene (PTFE). It exhibits a series of unique properties and characteristics, making it exceptional for various filtration applications. Below is a clear introduction to PTFE filter membrane material:

Material and Structure

• The PTFE filter membrane is made from polytetrafluoroethylene raw material through specialized processes (e.g., calendering, extrusion, biaxial stretching) to form a microporous film.
• It features a fibrillated microporous structure with a porosity exceeding 85%, containing 1.4 billion micropores per square centimeter. The pore size ranges from 0.02 μm to 15 μm.

Key Properties

• High Filtration Efficiency: Achieves up to 99.99% efficiency, nearing zero emissions.
• Chemical Resistance: Excellent corrosion resistance to most chemicals due to its unique chemical structure.
• Breathable Yet Waterproof: Exceptional breathability while effectively blocking water penetration.
• Flame Retardant and High-Temperature Stable: Inherently flame-retardant and stable under high temperatures.
• Acid/Alkali Resistance: Resistant to strong acidic and alkaline environments.
• Non-Toxic: Safe and environmentally compliant.

Applications

• Industrial Filtration: Used in flue gas filtration for industrial furnaces in sectors like chemicals, steel, metallurgy, carbon black, power generation, cement, and waste incineration.
• Air Purification: Filters dust, bacteria, and fine particles in air purification systems.
• Semiconductor Manufacturing: Applied in device filtration, cleaning, and specialty chemical storage/transportation.

Technical Specifications

• Thickness: 5–10 μm
• Grammage: 1–2 g/m²
• Width: 1700 mm
• Air Permeability:
  • Pre-lamination: 50–100 L/m²·s
  • Post-lamination: 20–40 L/m²·s
• Efficiency: ≥99.99%
• Resistance: ≤150 Pa

Advantages

• Low operational resistance and fast filtration speed.
• Long service life, reusable, and cost-effective.