Development of friction modifier compositions for C/C materials based on recycled carbon fibers with tailored tribological properties and development of an efficient PIP process for C/C materials (rCFric)

The aim of the project is to develop a new process chain and a know-how catalog for sustainable C/C materials in friction applications. For this purpose, recycled carbon fibers (rCF) are used for the first time, which significantly determine the structure and properties of the C/C material. To realize this development goal, the quality of the available rCF must be increased by innovative measures and the fiber surface reactivated. For sustainable material use, an automated preforming process is being developed that allows the cut-free production of a wide variety of preform geometries from rCF fibers and nonwovens with high densification and fiber orientation according to requirements by needling. There is a great need for development in the adequate matrix carbon densification of the rCF-based preforms via the two product-oriented process routes r-CVI and PIP. These process routes, the use of friction modifiers, realistic test methods and a cost-efficient process chain can significantly expand the use of C/C materials for service and emergency running systems as well as service and emergency brakes.

Duration: 01/2022 - 11/2023

Sponsor: BMWK ZIM cooperation project

Project partners: Dresden University of Technology - Institute for Textile Machinery and Textile High Performance Materials Technology (ITM), CVT GmbH & Co. KG, ROTH International GmbH

Contact: Dr.-Ing. Stefan Flauder, Dr. rer. nat. Nico Langhof