Asahi Kasei Brings Bevy of Automotive Plastics to Fakuma

Japanese technology company Asahi Kasei will exhibit its range of diversified material solutions at Fakuma 2024 from Oct. 15 to 19 in Friedrichshafen, Germany. Highlights include polymers for thermal management applications in EVs, a novel thermoplastic elastomer for improved recyclability of automotive interior parts, and a cellulose nanofiber composite for high-performance 3D printing.

Asahi Kasei will present its materials and solutions in three different areas: Compact & Safe EV Batteries, Improved Connectivity & Lightweighting, and Sustainable Material Life Cycle at its location in hall B5, booth 5319.

EV battery advances

At the battery island, the company will showcase Xyron modified polyphenylene ether (mPPE) featuring high non-halogenic flame retardance and low ion elution properties. This material is suitable for thermal management applications in EV batteries.

A dual-layer polyamide/mPPE cooling pipe for EV battery thermal management offers excellent bending properties, hydrolysis resistance, and low ion elution properties. Image courtesy of Asahi Kasei/Business Wire.

At Fakuma, Asahi Kasei also will show multilayer cooling pipes that do not require an adhesive layer. These two-layer pipes employ the company’s Leona polyamide (PA) on the outside and Xyron mPPE on the inside. This product offers excellent bending properties, hydrolysis resistance, and low ion elution properties.

Transparency with almost no birefringence

A novel transparent polymer reportedly outperforms incumbents such as polycarbonate and acrylic in automotive head-mounted displays. Image courtesy of Asahi Kasei/Business Wire.

From automotive head-up displays to head-mounted displays and smart glasses, requirements related to the weight and design of optical devices have become increasingly demanding. Asahi Kasei’s transparent AZP polymer features almost zero birefringence, overcoming the challenges of conventional transparent polymers in applications with polarizing light. Its superior processability compared to glass enables the large-scale production of injection-molded optical components that fulfill demanding customer requirements.

Related:Asahi Kasei Revs Up Auto Presence in North America

Solventless haptics

Balancing sustainability and functionality without sacrificing cost-competitiveness is a major issue for car manufacturers. To tackle this challenge, Asahi Kasei is currently developing a thermoplastic styrene block copolymer (SEBS) grade for automotive interior surfaces, which require good haptics and soft touch. Conventional approaches use different materials and production technologies for the skin, foam, and core layers in automotive instrument panels, door panels, armrests, or center consoles. The new SEBS material is suitable for both skin and foam layers, which can be molded in one step by utilizing a core back injection molding process.

Bonding to the polypropylene (PP) core layer is possible in the same or separate injection molding step. The strong chemical bonding between all layers eliminates the need for additional adhesive layers. Asahi Kasei's new SEBS contributes to reducing the total number of materials, simplifying the manufacturing process, and improving the recyclability of interior components.

Nanofiber-reinforced PA for 3D printing

Biodegradable cellulose nano fiber enables sustainable 3D printing. Image courtesy of Asahi Kasei/Business Wire.

Asahi Kasei will also showcase a bio-based and biodegradable cellulose nano fiber (CNF) at Fakuma. This material is made from cotton linter and features high heat resistance and a network-forming capability. CNF-reinforced PA exhibits thixotropic behavior, making it highly suitable for 3D-printing applications requiring dimensional accuracy, a smooth appearance, and mechanical performance. Furthermore, CNF exhibits superior material recyclability compared to glass fibers.

Depolymerizing PA 66

The company will also present its comprehensive solutions for establishing a sustainable life cycle for PA 66. In the field of chemical recycling, the company works with Japanese partner company Microwave Chemical, utilizing a microwave process to depolymerize automotive airbags and other PA 66–based parts and directly obtain the monomers hexamethylenediamine (HMD) and adipic acid (ADA). Currently undergoing trials, the process is expected to achieve high yields with low energy consumption. The monomers obtained can then be used to manufacture new PA 66.

In parallel, Asahi Kasei will introduce its solvent-based recycling process for the first time in Europe. By applying dissolution recycling, high-quality PA 66 can be obtained from process scraps and post-consumer-recycled (PCR) materials such as airbags.