Thermally stable ePTFE air filter membrane
Huzhou Kaili New Material Technology Co., Ltd. manufactures specialized thermally stable ePTFE (expanded Polytetrafluoroethylene) membranes designed for the most rigorous air filtration environments. Unlike standard polymer membranes that shrink, pucker, or degrade when exposed to heat, our ePTFE technology maintains its microscopic pore structure and mechanical integrity at continuous operating temperatures up to 260°C.
Produced in our 3,000m² facility in the Yangtze River Delta fluoromaterial cluster, these membranes are the premium choice for lamination onto high-performance substrates like Fiberglass, Nomex®, and PPS.
| Property | Test Method | Value / Specification |
| Material | 100% Virgin ePTFE | Thermally Stabilized |
| Continuous Operating Temp | Thermal Analysis | Up to 260°C (500°F) |
| Peak Surge Temp | Thermal Analysis | 280°C (536°F) |
| Filtration Efficiency | EN 1822 / MPPS | 99.9% – 99.999% |
| Air Permeability | ISO 9237 | 10 – 80 L/dm²/min @ 200Pa |
| Thickness | Micrometer | 10μm – 30μm |
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Key Thermal Performance Advantages
- Zero Thermal Shrinkage: Engineered to remain dimensionally stable during high-heat filtration cycles, preventing the "blinding" of pores or the tearing of the membrane-substrate bond.
- Continuous 260°C Operation: Capable of withstanding constant exposure to hot flue gases without melting or losing its hydrophobic properties.
- Surface Filtration Efficiency: Captures 99.99% of sub-micron dust (PM2.5) on the membrane surface, allowing for easy pulse-jet cleaning and preventing internal "depth-loading" of the filter bag.
- Universal Chemical Resistance: The fluoropolymer base is chemically inert (pH 0-14), providing total protection against acid and alkali corrosion in hot gas streams.
- Low Coefficient of Friction: The naturally "non-stick" surface ensures superior dust cake release, reducing the frequency of cleaning cycles and saving compressed air energy.
Critical Industrial Applications
Our thermally stable ePTFE air filter membranes are the industry standard for:
- Waste-to-Energy Plants: Filtration of complex, high-temperature flue gases containing acidic components.
- Coal-Fired Power Generation: Fly ash collection where thermal spikes are common.
- Cement & Lime Kilns: High-load particulate recovery in hot, abrasive environments.
- Smelting & Carbon Black: Capturing fine carbon particles and metal fumes at extreme temperatures.
- Asphalt Mixing Plants: Durable filtration for hot-mix asphalt exhaust systems.
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