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Mechanical and Tribological Properties of Polytetrafluoroethylene Composites with Carbon Fiber and Layered Silicate Fillers. 2019

Andrey P Vasilev, and Tatyana S Struchkova, and Leonid A Nikiforov, and Aitalina A Okhlopkova, and Petr N Grakovich, and Ee Le Shim, and Jin-Ho Cho
Chemistry Department, Institute of Natural Sciences, North-Eastern Federal University, Yakutsk 677000, Russia. gtvap@mail.ru.

Mixtures of layered silicates (vermiculite and kaolinite) and carbon fibers were investigated as filler materials for polytetrafluoroethylene. The supramolecular structure and the tribological and mechanical properties of the resulting polymer composite materials were evaluated. The yield strength and compressive strength of the polymer increased by 55% and 60%, respectively, when a mixed filler was used, which was attributed to supramolecular reinforcement of the composites. In addition, the wear resistance increased by 850 times when using vermiculite/kaolinite fillers, which was due to protection of the surface by the formation of hard tribofilms.

UI MeSH Term Description Entries
D007616 Kaolin The most common mineral of a group of hydrated aluminum silicates, approximately H2Al2Si2O8-H2O. It is prepared for pharmaceutical and medicinal purposes by levigating with water to remove sand, etc. (From Merck Index, 11th ed) The name is derived from Kao-ling (Chinese: "high ridge"), the original site. (From Grant & Hackh's Chemical Dictionary, 5th ed) Kaolinite
D008422 Materials Testing The testing of materials and devices, especially those used for PROSTHESES AND IMPLANTS; SUTURES; TISSUE ADHESIVES; etc., for hardness, strength, durability, safety, efficacy, and biocompatibility. Biocompatibility Testing,Biocompatible Materials Testing,Hemocompatibility Testing,Testing, Biocompatible Materials,Testing, Hemocompatible Materials,Hemocompatibility Testings,Hemocompatible Materials Testing,Materials Testing, Biocompatible,Materials Testing, Hemocompatible,Testing, Biocompatibility,Testing, Hemocompatibility,Testing, Materials,Testings, Biocompatibility
D011138 Polytetrafluoroethylene Homopolymer of tetrafluoroethylene. Nonflammable, tough, inert plastic tubing or sheeting; used to line vessels, insulate, protect or lubricate apparatus; also as filter, coating for surgical implants or as prosthetic material. Synonyms: Fluoroflex; Fluoroplast; Ftoroplast; Halon; Polyfene; PTFE; Tetron. FEP,Fluon,Politef,Polytef,TFE,Teflon,Expanded PTFE,Fluoroplast,GORE-TEX,Goretex,PTFE,Tarflen,GORE TEX,PTFE, Expanded
D006244 Hardness The mechanical property of material that determines its resistance to force. HARDNESS TESTS measure this property. Hardnesses
D000077482 Carbon Fiber Fiber with a diameter of approximately 5 to 10 micrometers that is composed mostly of carbon atoms. It has a variety of applications. Carbon Felt,Carbon Fibre,Composipost,Grafil,Carbon Felts,Carbon Fibers,Carbon Fibres,Felt, Carbon,Felts, Carbon,Fiber, Carbon,Fibers, Carbon,Fibre, Carbon,Fibres, Carbon
D000538 Aluminum Silicates Any of the numerous types of clay which contain varying proportions of Al2O3 and SiO2. They are made synthetically by heating aluminum fluoride at 1000-2000 degrees C with silica and water vapor. (From Hawley's Condensed Chemical Dictionary, 11th ed) Aluminum Silicate,Silicate, Aluminum,Silicates, Aluminum
D017640 Silicates The generic term for salts derived from silica or the silicic acids. They contain silicon, oxygen, and one or more metals, and may contain hydrogen. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th Ed) Silicate
D019245 Compressive Strength The maximum compression a material can withstand without failure. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed, p427) Compressive Strengths,Strength, Compressive,Strengths, Compressive

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