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New Plastic Materials Help New Generation of Electric Vehicles Lose Weight

The SIM-WIL prototype manufactured by SIM Drive Corp., a technology development company in Kawasaki, Japan, has plastics in key components, including wheel hub motors and thin film replacement materials for circuit boards.


    DuPont, which supplies a variety of materials for SIM Drive, issued a statement on July 19 saying that due to the use of lightweight materials and a unique “wheel hub” motor system, the vehicle’s mileage has been significantly improved.


    James Hay, Asia-Pacific regional director of DuPont Performance Polymers Division, said: “The project shows how lightweight, high-performance materials such as Zytel HTN [nylon] can maximize their role, allowing designers to increase the weight of metal without having to More innovative possibilities for electric and hybrid vehicles."


    SIM officials told Plastics News that their goal is to create an electric car that is as good as traditional gasoline-powered cars in terms of performance and comfort.


    The Japanese company said that, for example, SIM-WIL is not inferior to a mid-size sports car in terms of acceleration. The interior of the car is similar to that of a luxury car, but its body size is only equivalent to a mini car.


    The company told the publication that plastic materials are significant for weight loss, including powertrains, polycarbonate windows, and insulating plastics and other applications.


    The company also said it hopes to work more closely with the plastics industry. The company stated that its research has only just begun.


    When the car was announced, SIM Drive did not specifically mention any special role played by plastic in the car, but the company said it would launch new materials, including a hard-shell steel that was put into use for the first time. Space architecture.


    SIM Drive said that this framework can achieve a major breakthrough in weight loss, reduce production costs and increase firmness.


    The company said that they hope to put the car into mass production in 2014, and one of the purposes of producing the prototype is to demonstrate that the technology provided by 34 different partners can be used very reliably in mass production.


    DuPont said the project uses eight different plastics, films, papers, and coatings from DuPont, including Zytel materials for hub motor shafts. This material is stronger, lighter, and more cost-effective than the original PPS material.


    DuPont also said that the car uses Kapton polyimide film in the lamp lighting, eliminating the need to use the circuit board, thus reducing the weight of lighting components by 80%.


    An official from DuPont said that this prototype project is of great significance to DuPont.


    Suzue Kikuyama, director of the hybrid tram business unit at Dupont in Tokyo, said that DuPont is also closely involved in the early design phase of the car. It is often difficult for material suppliers to get involved in this stage of work.


    She also said that DuPont is particularly interested in the project because so far no company has used a hub motor system on mass-produced electric vehicles. She said that this is DuPont's Zytel material was first applied to the wheel hub motor.


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