Voir Technology’s Advanced Materials Unit (AMU) has officially launched PMF material.

Release time：2018-09-12

Applied as a cushioning material for soft-pack battery cells: polyurethane microporous foam (PMF) material.

Due to the swelling characteristics of soft-pack cells, foam is required to provide long-lasting and stable resilience to maintain structural integrity and ensure performance. This places extremely high demands on product durability, elastic recovery, high- and low-temperature performance, and compression properties. Voir Technology’s Advanced Materials Unit (AMU) has launched a portfolio of polyurethane EV battery cushioning materials, designed to offer a comprehensive solution for cushioning and vibration isolation in lithium-ion cells.

Thanks to their high energy density and charging efficiency, lithium-ion batteries have become the ideal power source for next-generation electric vehicles. At the same time, they pose a series of challenges related to battery safety, lifespan, and performance, which can only be addressed through advanced materials solutions. Polyurethane, widely adopted across the industry, inherently exhibits stable rebound stress within a certain compression range, making it well-suited for applications in areas with stringent safety and reliability requirements, such as battery cells.

The physical properties of polyurethane materials are critical to ensuring stable performance throughout the battery cell’s lifespan. In particular, under both internal and external compression, the material’s superior protective cushioning capabilities are fully realized, safeguarding the cell and extending the service life of the entire battery pack.

Leveraging Voir Technology’s years of experience in safety protection within the new energy industry—covering explosion-proof ventilation, pressure balancing, flame retardancy and temperature resistance, shock absorption and vibration damping, as well as sealing and waterproofing—and its collaborative expertise with key partners, Voir Technology can swiftly customize solution products. Moreover, its high-speed punching equipment ensures rapid delivery.

In addition to cushioning materials, the AMU division of the New Materials Business Unit also provides other advanced materials for electric vehicle applications.

1. Fire‑resistant, thermally insulating specialized polyurethane material: AMU770™ is applied to the top of the PACK housing; when heated, it expands to seal air gaps, and in the event of a fire, it forms a char layer that helps slow the spread of flames.

2. Silicon‑based cushioning, thermally conductive, and insulating material: AMU‑SR106™ is used as an insulating layer in cylindrical batteries to enhance thermal management between the battery cells and the water‑cooling plate, providing cushioning, thermal conduction, and electrical insulation—making it a multifunctional composite material.

3. PTFE‑coated fiberglass material: AMU‑PT103™ is used for insulation in cylindrical batteries, arranged in a serpentine configuration.

About Voir Technology It is a technology-driven company focused on research and development and innovative applications. It is renowned in the industry for its waterproof, breathable protective solutions and products, which are used across a wide range of fields. Voir Technology has three major business divisions: the AAU Division, which develops protective solutions for indoor and outdoor sealed electronic and electrical equipment; the AMU Division, which provides novel engineering projectile‑material solutions based on sealing, cushioning, impact resistance, flame retardancy, and thermal insulation; and the PMU Division, which researches, manufactures, and markets fluorine‑based ePTFE materials. For seven consecutive years, Voir Technology has been exploring and investing in the materials sector. To date, it has filed and been granted a total of 70 patents and has been recognized as a national high‑tech enterprise.

Voir was founded in 2009 and is located in the Digital Park of Huizhou City, Guangdong Province. As of 2017, it had more than 150 employees and operated multiple automated production lines, with technical and business personnel accounting for 80% of its workforce. It maintains an office in Shanghai, and its PMU business division is based in the Pingshan New District of Shenzhen.

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