The HoT-BRo feasibility study demonstrated the possibility of substituting petro-based plastics with bio-based plastics in the engine compartment of combustion engines. Building on these results, the HoT-BRo2 project aims to develop and modify specific materials in order to make thermoplastic bioplastics and biocomposites suitable for use in the high-temperature range across all sectors of industry.

The initial focus is on the development of suitable material formulations whose mechanical, thermal and chemical performance will be further developed and adapted to specific products. The reference components of the industrial partners are a turbocharger charge air tube (feasibility study), a commercial vehicle liquid filter module, a thermal management module and a cable gland. Here, predominantly based on (partially) biobased and recycled polyamides, the aim is to achieve the highest possible biobased proportion of the overall formulation, which should be at least 50 %. In addition, the focus is on processing techniques (extrusion blow molding and injection molding) and downstream processing techniques (radiation crosslinking, welding, bonding). In cooperation with the material and technology partners, different approaches to solutions will be pursued in the respective project phases and process limits identified. A life cycle assessment accompanying the project provides conclusions for the sustainability evaluation of the developed materials.