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ATOMFAIR® multiple rolls of white PP battery separator membranes with brown cores arranged on a white background.

Dry-process PP Separator 25μm x 60mm x 10m ATOMFAIR®

$68.00

Institutional Procurement & Supply Compliance: As a verified US supplier, Atomfair accepts formal institutional Purchase Orders (POs), contract billing schedules, and custom procurement loops for university and national laboratories, and corporate R&D departments globally.

Dry-process PP separator 25μm for Li-rich Mn batteries. Porosity 40%, melting point 167°C. Air permeability 349s, puncture strength 167g. Order now.

SKU: AFMSMHTV858
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Description

ATOMFAIR® AFSPPP25U60MM10M DRY PROCESS PP SEPARATOR

RESEARCH GRADE MATERIAL

Product Overview
The ATOMFAIR® AFSPPP25U60mm10m is a high-tensile 25μm dry-process polypropylene (PP) matrix engineered exclusively for advanced lithium-rich manganese-based battery architectures. This thick-film dry configuration provides enhanced structural rigidity and outstanding cross-directional strength to mitigate physical stress during fabrication, while the optimized porous profile establishes rigorous cell-to-cell consistency, baseline testing control, and systematic variable elimination across premium electrolyte validation workflows.

Technical Specifications

PARAMETER DETAILS
1. Core Device & Electrochemical Design
Product Model AFSPPP25U60mm10m
Product Code AF-PP25
Base Material / Film PP (Polypropylene)
Dimension Specification 60mm × 10m
2. Separator Matrix Physical Parameters
Base Film Thickness 25 μm
Total Thickness 25 μm
Width 60 mm
Areal Density 13.6 g/m2
Porosity 40 %
Air Permeability 349 S
Thermal Shrinkage (MD / TD) 1.8 % / 0.1 %
Tensile Strength (MD / TD) 172 kg/cm3 / 429 kg/cm3
Puncture Strength 167 g
Melting Temperature 167 °C
3. Compliance & Sourcing Options
Manufacturing Rules Processed under strict [ISO 9001 standard manufacturing compliance] conditions.
Alternative Options Comprehensive matrix options available (AF-PP16, AF-PP20, AF-PP25, AF-PE7, AF-PE9, AF-PE12, AF-PE16, AF-PE20). For custom dimensions or institutional bulk orders, please contact our engineering support.

Key Features & Advantages
  • Exceptional Tensile Properties: Features an optimized dry-process configuration delivering a superior transverse tensile strength of 429 kg/cm³ to endure harsh mechanical cell winding.
  • High Thermal Safeguards: Boasting an elevated 167 °C melting temperature paired with minimal TD thermal shrinkage (0.1%), ensuring robust electrode isolation during high-temperature testing.
  • Uniform Pore Distribution: Micro-engineered with a stable 40% porosity and 349S air permeability to support uniform electrolyte wetting and reliable electrochemical transfer kinetics.

APPLICATION SCOPE: Specially developed for Lithium-Rich Manganese-Based Battery Systems and relevant heavy-duty secondary electrochemical cell configurations.
PACKAGING: Packaged with professional plastic-sealed bags and protective cushion pads to effectively secure the matrix from physical damage during transportation and storage.
STORAGE CONDITIONS & OPERATIONAL NOTICE: Sealed and stored in a normal or low temperature, dry, and ventilated environment. Keep away from fire and heat sources; avoid direct sun exposure, fire baking, and rain during transportation to prevent matrix degradation before definitive laboratory validation.

TAILORED SOLUTIONS FOR RESEARCH
Contact our engineering team for technical support or official institutional quotations.
EMAIL: inquiry@atomfair.com
Manufacturer: Atomfair LLC
Brand: ATOMFAIR®

This polypropylene separator must be stored under controlled environmental conditions to preserve its dimensional stability and porosity. It is susceptible to thermal degradation and mechanical damage, requiring careful handling during battery assembly.

  • Storage and Handling: Store the separator in its sealed packaging in a dry, low-temperature, and well-ventilated environment to maintain integrity.
  • Thermal Constraints: Keep away from open flames, heat sources, and temperatures approaching the melting point to prevent shrinkage and pore deformation.
  • Mechanical Sensitivity: Handle with care to avoid mechanical stress that could cause puncture or tearing due to the material's limited puncture resistance.
  • Shrinkage Behavior: Control thermal exposure to stay within the material's heat shrinkage limits to prevent irreversible dimensional change.

How does the 1.8% longitudinal heat shrinkage of the 25μm dry-process PP separator impact electrode alignment during dry cell assembly?

The 1.8% MD heat shrinkage is a critical consideration for dry cell assembly, as it can cause misalignment of electrodes if the separator is not pre-stabilized. This value is higher than the 1.1% MD shrinkage of the 20μm variant (AF-PP20) listed in the same product family, indicating a trade-off between separator thickness and dimensional stability under thermal stress.

What electrolyte wetting characteristics are expected from the Atomfair 25μm dry-process PP separator based on its Gurley air permeability of 349 seconds?

The air permeability of 349 seconds indicates a relatively high resistance to air flow, which correlates with lower porosity (40%) and suggests moderate electrolyte wetting kinetics. This is appropriate for Li-rich manganese-based batteries where slower wetting may be acceptable, but researchers should compare this to the 210-second value of the 16μm variant (AF-PP16) for applications requiring faster impregnation.

What are the recommended storage conditions and handling precautions to maintain the integrity of the Atomfair dry-process PP separator before use?

The separator must be stored sealed in a normal or low-temperature, dry, and well-ventilated environment, away from fire and heat sources. Transportation must avoid exposure to sunlight, fire baking, and rain, with packaging using plastic-sealed bag and buffer pad to prevent physical damage. These conditions are essential to preserve the 25μm PP film’s dimensional stability and porosity (40%) prior to cell assembly.

The Atomfair Dry-process PP Separator 25μm offers a balanced combination of mechanical strength and thermal stability, with low transverse shrinkage and a melting point of 167°C, making it suitable for Li-rich manganese-based battery applications. However, it requires controlled storage conditions and careful handling to maintain its properties.

Positive

  • Low transverse heat shrinkage: Transverse heat shrinkage of only 0.1% ensures minimal dimensional change during battery assembly and operation, enhancing electrode alignment.
  • High melting temperature for thermal stability: With a melting point of 167°C, this PP separator provides robust thermal shutdown safety for Li-rich manganese-based batteries.

Trade-offs

  • Controlled storage environment required: Must be stored sealed in a cool, dry, well-ventilated area away from fire and heat sources to maintain integrity.
  • Susceptible to damage during handling: Delicate separator requires protective packaging (plastic-sealed bag and buffer pad) to prevent physical damage.

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).

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