Accession Number:

AD0270607

Title:

MICROFIBER REINFORCEMENT OF POLYTETRAFLUOROETHYLENE (TEFLON)

Descriptive Note:

Final rept.,

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s):

Report Date:

1962-01-09

Pagination or Media Count:

25.0

Abstract:

An unusual method for the inorganic fiber reinforcement of polytetrafluoroethylene Teflon, either as a bulk polymer or as thin-film lubricating coatings, is the use of microfibers of synthetic boehmite alumina. The novel features concern a the relatively small quantity usually less than 5 of microfiber necessary to produce large increases in the mechanical properties of polytetrafluoroethylene TFE resin, b the large increase in cohesive strength resulting from the attractive electrostatic forces between the microfiber and the TFE to which it adsorbs, c the stabilizing effect of the microfiber in aqueous dispersions of TFE which reduces coagulation and improves storage life, d the thixotropic effects produced by the microfiber which enable the molding or extrusion of TFE resins directly from the aqueous dispersions, and e the large improvement in the durability of TFE lubricating coatings by promoting self healing. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE