Description
ATOMFAIR® DRY-PROCESS PP SEPARATOR 20μm (MODEL: AFSPPP20U60mm10m)RESEARCH GRADE MATERIAL – PRIMARY COMPONENT FOR ION TRANSMISSION
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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 20 μm dry-process polypropylene separator must be stored in a dry, ventilated environment away from heat and sunlight to prevent thermal shrinkage and mechanical damage. Handling requires care to avoid deformation and contamination that could affect battery performance.
- Storage Environment: Store in a dry, ventilated environment at normal or low temperature to prevent moisture absorption and thermal degradation.
- Fire and Heat Avoidance: Keep away from fire, heat sources, and flammable materials to prevent thermal runaway or ignition.
- Light and Weather Protection: Shield from direct sunlight, rain, and fire baking to maintain dimensional stability and mechanical integrity.
- Mechanical Handling: Handle with care to avoid severe collision, extrusion, or bending that could compromise separator uniformity.
- Packaging Integrity: Use plastic-sealed bags and cushion pads to ensure the separator remains uncontaminated and undamaged during transport.
What causes the large anisotropy in thermal shrinkage between MD and TD in the Atomfair 20μm dry-process PP separator?
The dry-process uniaxial orientation inherent to this PP separator results in a longitudinal thermal shrinkage (MD) of 1.1%, which is eleven times higher than the transverse shrinkage (TD) of 0.1%. This anisotropy must be accounted for during cell stacking and thermal processing to prevent electrode misalignment or internal short circuits after exposure to elevated temperatures.
Can the Atomfair 20μm dry-process PP separator be used interchangeably with wet-process PE separators in lithium-ion battery formulations?
No, direct substitution is not recommended because the dry-process PP separator has a melting temperature of 167°C versus about 135°C for wet-process PE, altering shutdown behavior and thermal runaway response. Additionally, the PP separator exhibits much lower transverse tensile strength (20 kg/cm³ compared to >150 kg/cm³ for 20μm PE) and higher air permeability (355 S versus 224 S for 20μm PE), which impact mechanical integrity during winding and ionic conductivity.
What storage conditions are required to maintain the low thermal shrinkage properties of the Atomfair 20μm dry-process PP separator?
The separator must be stored sealed in a dry, well-ventilated environment at normal or low temperature, away from fire, heat sources, and flammable materials. During transportation, avoid direct sunlight, rain, and severe mechanical collision or extrusion to prevent environmental degradation that could alter the specified low shrinkage values of 1.1% MD and 0.1% TD.
This 20μm dry-process PP separator offers low thermal shrinkage and high melting temperature for stable battery research, but its narrow width and short length constrain it to small-format experimental cells, and it demands careful storage and handling to preserve integrity.
Positive
- Low thermal shrinkage: Longitudinal MD thermal shrinkage only 1.1% and transverse TD 0.1% at elevated temperatures, ensuring dimensional stability during battery assembly and operation.
- High melting point: Melting temperature of 167°C provides a wide thermal operating window, enhancing safety against thermal runaway.
Trade-offs
- Storage and handling sensitivity: Requires sealed, dry, low-temperature storage away from ignition sources, and must be handled carefully to avoid mechanical damage from collision or extrusion.
- Limited experimental format: Supplied as a 60mm wide, 10m long roll, suitable only for small-scale experimental cells and not for production-scale winding.
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).
