Meta-Aramid Coated PE Separator Film 15μm

This product is highly sensitive to ambient moisture and must be kept in tightly sealed containers or handled exclusively within an anhydrous inert gas environment to prevent contamination or structural degradation. Thermal shrinkage of 11.6% in the machine direction and 5.9% in the transverse direction occurs at 140°C for 1 hour, requiring strict temperature control during processing.

• Moisture Sensitivity: Exposure to ambient moisture can cause contamination or structural degradation, necessitating storage in sealed containers or inert gas handling.
• Thermal Shrinkage Risk: At 140°C for 1 hour, the film exhibits 11.6% shrinkage in the machine direction and 5.9% in the transverse direction, limiting high-temperature exposure.

Proper handling and storage prevent moisture contamination and thermal degradation of the separator film. Use anhydrous inert gas environments and avoid temperatures above 140°C.

Required Equipment: Anhydrous inert gas glovebox or dry room, Sealed heavy-duty core container

1. Transfer to inert environment
   Transfer the sealed roll immediately into an anhydrous inert gas glovebox or dry room before opening the container.
2. Open container
   Open the heavy-duty core container only inside the inert environment to avoid moisture exposure.
3. Store sealed
   Keep the film in a sealed container within the inert environment when not in use to maintain dryness.
4. Monitor temperature
   Ensure storage and processing temperatures remain below 140°C to prevent thermal shrinkage.

This 15 μm symmetric double-side aramid-coated PE separator provides a baseline control for electrolyte validation studies, with a nominal thickness of 15.0 μm and an average measured thickness of 12.5 μm. The aramid coating enhances thermal stability, as indicated by thermal shrinkage of 11.6% (MD) and 5.9% (TD) at 140°C for 1 hour, while the 521 gf puncture strength offers mechanical robustness. However, the material is highly sensitive to ambient exposure, requiring anhydrous inert gas handling to prevent moisture contamination, and the 37% porosity and 246 sec/100ml Gurley value may limit ionic transport in high-rate applications.

Positive

• Thermal stability enhancement: The symmetric double-side aramid coating provides thermal shrinkage of 11.6% (MD) and 5.9% (TD) at 140°C for 1 hour, reducing hazardous shrinkage risk during high-drain operation.
• Mechanical puncture resistance: With an average puncture strength of 521 gf using a 1.0 mm needle, the separator offers robust mechanical integrity to suppress internal short circuits and lithium dendrite penetration.

Trade-offs

• Ambient exposure sensitivity: The product is highly sensitive to ambient exposure; containers must be kept tightly sealed or handled exclusively within an anhydrous inert gas environment to prevent moisture contamination or structural degradation before thermal validation.
• Moderate porosity and permeability: With a porosity of ~37% and an average Gurley value of 246 sec/100ml, the separator may present a trade-off in ionic transport kinetics, potentially limiting rate performance in high-power applications.

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 excl. heavy equipment). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).