▲TEGO® Therm possesses excellent thermal insulation and fire resistance, reducing the risk of thermal runaway in EV batteries

▲Improves safety while meeting essential mechanical performance requirements and flame retardant standards, especially UL 94 V-0 flame retardant rating

▲Applicable to spraying processes, ensuring complete and effective coverage of the entire battery housing

Image source: Evonik

Evonik is expanding its TEGO® Therm series to provide materials for thermal insulation and fireproof coatings for EV battery housings and covers. With the rapid growth of the EV market, safety standards for lithium-ion batteries have become increasingly stringent. In this context, effective thermal insulation barriers are crucial for preventing thermal runaway in EV batteries. Coatings based on Evonik's TEGO® Therm can fully meet the demand for effective thermal insulation barriers in relevant applications.

"With the rapid development of the EV industry, the safety of EV lithium-ion batteries has become increasingly important," said Dr. Shi Jieming, Global Industrial and Transportation Coatings Market Leader for Evonik's Coatings Additives Business Line. "The automotive industry needs reliable thermal insulation materials that can meet or even exceed current stringent safety standards, and TEGO® Therm is our positive response to this market demand."

The TEGO® Therm series includes a variety of carefully developed products that enhance the performance of thermal insulation and fireproof coatings. Among them, TEGO® Therm HPG 4000 particles feature a microporous silica core, with excellent low thermal conductivity, high hydrophobicity, and low flammability. TEGO® Therm HPG 6806 is a finer silica particle that not only has excellent thermal insulation performance but also enhances mechanical properties, ensuring a smooth and even surface for thermal insulation coatings. The water-based polysiloxane hybrid binder TEGO® Therm L 300 further enhances the thermal stability and fire resistance of protective coatings.

Coatings based on TEGO® Therm series products meet the UL 94 V-0 fire safety standard, providing upgraded protection for EV batteries. The versatility of TEGO® Therm allows fireproof coatings to be sprayed on complex three-dimensional substrates, ensuring that the coatings can completely and effectively cover every part of the battery housing.

Dr. Niko Haberkorn, Head of Business Development for Global Industrial and Transportation Markets at Evonik's Coatings Additives Business Line, said, "The core of the TEGO® Therm solution lies in the synergistic effect between binders and particles, which minimizes heat transfer and achieves flame retardant effects. Additionally, our products ensure high mechanical properties and maintain structural integrity under high-temperature conditions."

The TEGO® Therm series has undergone rigorous testing, demonstrating Evonik's commitment to product safety and innovation. In propylene flame tests at temperatures above 1000°C, coatings based on TEGO® Therm can effectively protect the substrate, maintaining moderate temperatures on the back of the substrate even with a lower dry film thickness. The test results show that TEGO® Therm can effectively isolate high temperatures, especially suitable for space-constrained applications.

By expanding the TEGO® Therm product portfolio, Evonik aims to further enhance the safety performance of EV batteries. With the continuous expansion of the EV market, Evonik will continue to develop cutting-edge, reliable, and efficient coating solutions to contribute to building a safer and more sustainable automotive industry.

Evonik's Coatings Additives Business Line is committed to providing a wide range of specialty additives for the coatings and printing ink industries, accumulating decades of experience in new product development in decorative coatings, industrial coatings, automotive coatings, and printing ink markets.

About Evonik

Evonik is a global leader in specialty chemicals, with a presence in over 100 countries and regions. In fiscal year 2023, Evonik achieved sales of 15.3 billion euros and an operating profit (adjusted EBITDA) of 1.66 billion euros. We transcend the boundaries of chemistry, committed to creating innovative, profitable, and sustainable solutions for our customers. With over 33,