RADICALLY COUPLED PTFE POLYMER POWDERS, AND METHOD FOR THE PRODUCTION THEREOF

摘要

The invention relates to the field of chemistry and more particularly to radically coupled PTFE polymer powders that can be used as tribomaterials, for example, and a method for the production thereof. The aim of the invention is to create radically coupled PTFE polymer powders which are provided with improved wear resistances as a PTFE polymer compound after being incorporated into a matrix as well as a simple and efficient method for the production thereof. Said aim is achieved by radically coupled PTFE polymer powders comprising radiation-chemically and/or plasma-chemically modified PTFE powders, onto the particle surface of which homopolymers, copolymers, or terpolymers are radically coupled via a reaction in dispersion or substance. Said aim is further achieved by a method in which PTFE powders comprising reactive perfluoroalkyl-(peroxy-) radical centers are reacted in dispersion or substance by adding polymerizable, olefinically unsaturated monomers after being radiation-chemically and/or plasma-chemically modified, a polymer-forming reaction taking place during the reaction.