The EPTFE layer is an expanded polytetrafluoroethylene (EPTFE) microporous membrane formed by a nano-scale biaxial stretching process. It has a controllable pore size of 0.05-10μm, a porosity of >85% and chemical inertness. It is embedded in the composite material as the core functional layer, giving the end product waterproof and breathable properties (>20,000mmH₂O hydrostatic pressure, >15,000g/m²·24h moisture permeability), anti-pollution/corrosion resistance (EN 14325) and extreme environmental adaptability (-200℃ to +260℃), and is widely used in filtration, protection, energy and electronic packaging fields.
Product Advantages
Precision pore size control
Gradient pore size design: 0.05μm (virus/particle barrier layer) → 0.2μm (gas/liquid separation layer) → 5μm (support guide layer), suitable for ultra-precision filtration scenarios (such as semiconductor ultrapure water).
Intelligent response channel: Humidity/temperature triggers dynamic opening and closing of pore size (moisture permeability increases by 50% when humidity>70%), maintaining microenvironment stability (ISO 7730 thermal comfort index <0.5).
Multifunctional composite integration
Enhanced composite process: Composited with aramid (tear resistance), carbon fiber (conductive), and aerogel (thermal insulation), achieving tensile strength>100MPa (ASTM D638) and thermal conductivity<0.02W/m·K (ASTM C177).
Self-repair function: Pre-embedded microcapsules (siloxane/polyurethane), automatically release repair agent after membrane damage, and recovery rate>95% (ASTM D7250).
Tolerance to extreme environments
Anti-radiation aging: Strength retention after 100kGy γ-ray irradiation is >90% (ASTM D638), suitable for nuclear industry/aerospace scenarios.
Anti-chemical corrosion: Resistant to 98% sulfuric acid, 40% hydrofluoric acid (EN 374-1, penetration time >24 hours), resistant to electrolyte (lithium battery packaging).
Our Factory
Our factory has been focusing on the production of e-PTFE and composite materials for over 10 years. We strictly select raw materials, strictly control production, and strictly inspect quality. We have a professional R&D team that can customize R&D and have long-term cooperation with suppliers. We reduce costs through optimized processes and large-scale automated production. We have won the trust of the market with high-quality, customized products and professional and focused attitude. We sincerely invite customers to consult and place orders.
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