FREE SHIPPING with $59 or More. New Customer? Inquire for Major Discount & Free Samples! Online Payments & POs Accepted.

ATOMFAIR® wet process PE separator rolls in white color, wound on brown cores and stacked on a white background for battery research.

Wet-Process PE Separator 20μm 75mm Research Grade 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.

Research grade wet-process PE separator, 20μm thick, 75mm wide, 722g puncture strength, 41% porosity. Ideal for battery cell assembly. Order now.

SKU: AFMSQWIT978
Category:
Tags: , ,
Brands:

Description

ATOMFAIR® WET-PROCESS PE SEPARATOR 20UM (75MM × 20M)

RESEARCH GRADE MATERIAL

APPLICATION SCOPE: Mainly used in the field of scientific research and experiments as a key internal component of batteries to achieve positive and negative electrode isolation and ensure ion transmission.
PACKAGING METHOD: The product is packaged with plastic-sealed bags and cushion pads to ensure integrity during transportation and storage.
STORAGE CONDITIONS: Sealed and stored in a normal or low temperature, dry, and well-ventilated environment. Keep away from fire and heat sources, and avoid contact with flammable and explosive materials.
TRANSPORTATION REQUIREMENTS: Avoid exposure to sunlight, fire baking, and rain to prevent product performance from being affected by the environment. Handle with care during transportation to avoid severe collision and extrusion.
IMPORTANT NOTICE: This product is highly sensitive to ambient exposure. Keep containers tightly sealed or handle exclusively within an anhydrous inert gas environment to prevent phase contamination or degradation before thermal validation.

Specification Parameters (Model: AFSPPE20U75mm20m)

PARAMETER DETAILS
1. Core Device & Electrochemical Design
Product Code / Model AF-PE20 / AFSPPE20U75mm20m
Base Film Material Wet-process Polyethylene (PE)
Dimension Specification 75mm × 20m
2. Cathode (Positive Electrode) Parameters
Base Film Thickness 20 μm
Total Component Thickness 20 μm
Longitudinal Tensile Strength (MD) 196 kg/cm³
3. Anode (Negative Electrode) Parameters
Transverse Tensile Strength (TD) 165 kg/cm³
Mechanical Puncture Strength 722 g
Melting Temperature Threshold 135 ℃
4. Separator & Physical Package Metrics
Surface Density Metric 11 g/m²
Porosity Ratio 41 %
Air Permeability 224 S
Longitudinal Thermal Shrinkage (MD) 1.4 %
Transverse Thermal Shrinkage (TD) 0.1 %
Manufacturing Rules Processed under strict ISO standard compliance conditions

Product Overview
Premium wet-process Polyethylene (PE) separator explicitly optimized for cutting-edge battery R&D and laboratory-scale assemblies. This high-purity micro-porous matrix provides reliable electrode isolation and ensures highly stable, unrestricted ion transport. Formatted at an optimized 75mm × 20m sizing matrix, it delivers a highly consistent baseline verification control for high-power density cells, solid-state configurations, and refined academic electrochemical validation pathways. By integrating this platform, your team can optimize cell assembly mechanics while gaining access to competitive transactional wholesale pricing. Secure a predictable, scalable benchmark material for your long-term, high-impact SCI-grade research workflows.

Key Features & Advantages
  • Homogeneous Material Purity: Features an uncompromised structural configuration with highly uniform elemental distribution across the matrix.
  • Enhanced Operational Efficiency: Specifically engineered to demonstrate superior electrochemical performance, significantly boosting transfer kinetics at targeted bands.
  • Optimized Sintering/Microstructure: Advanced synthesis allows for lower required operating temperatures and ideal grain boundary integration during cell fabrication.

Dry & Wet Process Product Selection Matrix
Standard Width: 60 mm. Alternative parameters and customized dimensions are fully supported via engineering consultation.

CODE NAME BASE FILM BASE THICK (μm) TOTAL THICK (μm) WIDTH (mm) SURFACE DENSITY (g/m²) POROSITY (%) AIR PERM. (S) MD SHRINK (%) TD SHRINK (%) MD TENSILE (kg/cm³) TD TENSILE (kg/cm³) PUNCTURE (g) MELT TEMP (°C)
AF-PP16 Dry-process PP Separator 16um PP 16 16 60 8.75 41 210 1.6 0 140 17 380 167
AF-PP20 Dry-process PP Separator 20um PP 20 20 60 11.5 40 355 1.1 0.1 158 20 414 167
AF-PP25 Dry-process PP Separator 25um PP 25 25 60 13.6 40 349 1.8 0.1 172 20 429 167
AF-PE7 Wet-process PE Separator 7um PE 7 7 60 4.3 40 155 1.2 0.1 221 180 339 135
AF-PE9 Wet-process PE Separator 9um PE 9 9 60 5.7 38 185 1.5 0.1 221 156 410 135
AF-PE12 Wet-process PE Separator 12um PE 12 12 60 7.1 40 222 0.9 0.1 208 167 566 135
AF-PE16 Wet-process PE Separator 16um PE 16 16 60 8.8 39 224 1.2 0.1 192 156 535 135
AF-PE20 Wet-process PE Separator 20um [Current Model Dimensions Available] PE 20 20 60 11 41 224 1.4 0.1 196 165 722 135
TAILORED SOLUTIONS FOR RESEARCH
Contact our engineering team for technical support or official institutional quotations.
EMAIL: inquiry@atomfair.com
Manufacturer: Atomfair LLC
Brand: ATOMFAIR®

The wet-process polyethylene separator is a microporous membrane used for electrode isolation in lithium-ion battery assembly. Storage requires a sealed, dry, well-ventilated environment away from heat sources to maintain dimensional stability and prevent thermal degradation.

  • Thermal Shrinkage: The separator exhibits anisotropic thermal shrinkage of 1.4% MD and 0.1% TD at elevated temperatures, requiring careful alignment during cell assembly.
  • Puncture Strength: A minimum puncture strength of 722 grams ensures resistance against dendritic penetration but requires avoidance of sharp objects during handling.
  • Melting Temperature: The polyethylene base film melts at 135°C, imposing a strict upper temperature limit for drying and electrolyte filling processes.
  • Storage Conditions: Storage must be in a sealed, dry, and well-ventilated environment to prevent moisture absorption and oxidation.
  • Handling Precautions: The separator must be handled with care to avoid severe collision, extrusion, or creasing that could compromise its mechanical integrity.

How does the 20 μm thickness of this wet-process PE separator affect its puncture strength compared to thinner alternatives?

The 20 μm thickness delivers a puncture strength of 722 g, substantially higher than thinner wet-process PE separators such as the 7 μm (339 g) and 9 μm (410 g) variants. This is achieved by combining a thicker base film with a porosity of 41% and a surface density of 11 g/m², which collectively enhance mechanical robustness while maintaining ionic conductivity.

Can this 20 μm wet-process PE separator be used directly in lithium-ion battery pouch cells originally designed for dry-process PP separators?

Direct substitution is possible but requires careful evaluation of thermal and mechanical compatibility. This PE separator melts at 135°C, which is 32°C lower than typical dry-process PP separators (167°C), potentially altering shutdown behavior. Additionally, its longitudinal thermal shrinkage of 1.4% MD and 0.1% TD must be validated against the cell's lamination and electrolyte compatibility to avoid wrinkling or short-circuit risks.

What are the specific storage and handling requirements for this wet-process PE separator to maintain its 722 g puncture strength?

Store the separator sealed in a normal or low-temperature, dry, well-ventilated environment, away from fire and heat sources. During transportation, avoid exposure to sunlight, rain, severe collision, and extrusion, as mechanical abuse can introduce micro-defects that degrade the puncture strength and overall integrity of the 20 μm film.

The Atomfair Wet-process PE Separator (AF-PE20, 20μm) offers a puncture strength of 722 g and a melting temperature of 135 °C, making it suitable for laboratory-scale battery assembly where mechanical robustness and controlled thermal shutdown are required. Its balanced porosity (41 %) and air permeability (224 s) support ion transport, while the low transverse thermal shrinkage (0.1 %) ensures dimensional stability during cell fabrication.

Positive

  • High puncture strength: With a puncture strength of 722 g, this separator provides strong resistance against electrode particle penetration, reducing short-circuit risk in experimental cells.
  • Low transverse thermal shrinkage: Transverse thermal shrinkage is only 0.1 %, and longitudinal shrinkage is 1.4 %, ensuring minimal dimensional change during battery assembly and thermal exposure.

Trade-offs

  • Low melting temperature: The melting temperature of 135 °C is typical for PE separators and represents a trade-off between shutdown capability and thermal stability; cells must be operated well below this threshold to avoid catastrophic failure.
  • Stringent storage conditions required: The product must be sealed, stored in a dry, ventilated, low‑temperature environment away from heat and fire sources, and handled with care to avoid physical damage or environmental 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).

Additional information

Dimensions 200000 × 0.75 × 0.002 cm

Related products