Radically coupled PTFE polymer compounds and method for the production thereof
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United States of America Patent
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Feb 11, 2014
Grant Date -
Sep 30, 2010
app pub date -
Jun 7, 2010
filing date -
Oct 30, 2003
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Abstract
The invention relates to the field of chemistry and relates to radically coupled PTFE polymer compounds that can be used, for example, as tribo materials, and a method for the production thereof. The object of the invention is to disclose radically coupled PTFE polymer compounds which exhibit improved wear resistances with comparable gliding properties, and furthermore a simple and efficient method for the production of such compounds. The object is attained through radically coupled PTFE polymer compounds comprising radiation-chemically and/or plasma-chemically modified PTFE powders, on the particle surface of which olefinically unsaturated polymers are chemically radically coupled by a reactive conversion into a melt. The object is further attained through a method for producing radically coupled PTFE polymer compounds, in which PTFE powders are reactively converted with reactive perfiuoroalkyl-(peroxy) radical centers after a radiation-chemical and/or plasma-chemical modification into a melt with the addition of olefinically unsaturated polymers.
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