Description
ATOMFAIR® AFSPPE7U60MM20M WET PROCESS PE SEPARATORRESEARCH GRADE MATERIAL
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TAILORED SOLUTIONS FOR RESEARCH
Contact our engineering team for technical support or official institutional quotations.
EMAIL: inquiry@atomfair.com
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Manufacturer: Atomfair LLC
Brand: ATOMFAIR®
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This PE separator requires storage in a sealed, dry, ventilated environment at normal or low temperature to prevent moisture absorption and thermal degradation. The material exhibits longitudinal heat shrinkage of 1.2% at elevated temperatures and a melting point of 135°C, necessitating strict temperature control during battery assembly.
- Storage Environment: Store in a sealed, dry, ventilated environment at normal or low temperature to prevent moisture absorption and thermal degradation.
- Thermal Degradation: Avoid prolonged exposure to temperatures near the melting point of 135°C to prevent film failure.
- Fire and Heat Avoidance: Keep the separator away from open flames, heat sources, and direct sunlight to avoid shrinkage or combustion.
- Mechanical Handling: Handle with care to avoid punctures or tears, as the film has a puncture strength of 339g.
How does the 7 μm thickness of this wet-process PE separator affect its mechanical robustness and safety margin compared to thicker separators?
The 7 μm thickness reduces ionic resistance and improves energy density, yet the separator retains a longitudinal tensile strength of 221 kg/cm³, transverse tensile strength of 180 kg/cm³, and puncture strength of 339 g. Its melting temperature of 135 °C provides a clear thermal shutdown margin, though the thin profile requires careful handling to avoid mechanical defects not present in thicker variants.
Is this 7 μm PE separator compatible only with lithium-rich manganese-based batteries, or can it be used with other cathode chemistries?
This separator is specifically designed and labeled for lithium-rich manganese-based batteries, with parameters such as 7 μm total thickness, 40% porosity, and 155 s air permeability tailored to that chemistry. While the base PE film is chemically compatible with common lithium‑ion electrolytes, using it with other cathode systems like NMC or LFP requires separate validation to confirm mechanical and thermal suitability.
What are the critical storage and handling requirements to maintain the integrity of this 7 μm PE separator before electrode assembly?
The separator must be stored in a sealed, dry, ventilated environment at normal or low temperature to preserve its 7 μm thickness and 40% porosity. Keep away from fire, heat sources, direct sun, and rain; the plastic sealed bag with buffer pad provides mechanical protection, but avoiding creases or puncture is essential to prevent compromising heat shrinkage of 1.2% MD and 0.1% TD.
This 7 μm wet-process PE separator is engineered for lithium-rich manganese-based batteries, offering a balance of high tensile strength (221 kg/cm³) and low heat shrinkage (1.2% MD) at the cost of a 135°C melting point and strict storage requirements.
Positive
- High tensile strength for thin separator: Longitudinal tensile strength of 221 kg/cm³ and transverse of 180 kg/cm³ provide robust mechanical integrity during cell assembly and cycling, minimizing rupture risk in a 7 μm film.
- Very low heat shrinkage: MD shrinkage of 1.2% and TD shrinkage of 0.1% ensure dimensional stability under thermal stress, reducing the likelihood of short circuits due to electrode exposure.
Trade-offs
- Low melting temperature: The PE base film melts at 135°C, which limits upper operating temperature and may require thermal management in high-power or abuse scenarios.
- Strict storage and handling conditions: Requires sealed, dry, ventilated storage away from heat sources and sun exposure, imposing specific facility and inventory controls to prevent degradation.
Every advanced material, component, equipment, and instrument in our catalog is backed by rigorous testing. We maintain strict internal quality management frameworks and align with CE conformity metrics to deliver transparent, reproducible performance data via our public open-science repository.
To request raw batch performance data, submit formal vendor registration paperwork, or execute a fast-turnaround R&D manufacturing loop, contact us at inquiry@atomfair.com.
Item is dispatched under the Atomfair Shipping & Delivery Framework (Free worldwide shipping on orders over $59 USD). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).
