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4 edition of Evaluation of boundary-enhancement additives for perfluoropolyethers found in the catalog.

Evaluation of boundary-enhancement additives for perfluoropolyethers

Evaluation of boundary-enhancement additives for perfluoropolyethers

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  • 28 Currently reading

Published by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, DC], [Springfield, Va .
Written in English

    Subjects:
  • Perfluoro compounds,
  • Polyether resins,
  • Amorphous materials,
  • Wear,
  • Additives,
  • Boundary lubrication

  • Edition Notes

    Other titlesEvaluation of boundary enhancement additives for perfluoropolyethers.
    StatementBradley A. Shogrin ... [et al.].
    SeriesNASA technical memorandum -- 107393.
    ContributionsShogrin, Bradley A., United States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL17565438M
    OCLC/WorldCa39725346

    Materials is an international peer-reviewed open access semimonthly journal published by MDPI. Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is CHF (Swiss Francs). The Definitive User's Guide and Databook. Author: Sina Ebnesajjad,Pradip R. Khaladkar; Publisher: William Andrew ISBN: Category: Technology & Engineering Page: View: DOWNLOAD NOW» This is a self-contained collection of data and information on applications of fluoropolymers components for corrosion control in chemical processing industries.

    processing additives (PPA). As an example, several papers were written on the topic of additive interactions3,4, and cover a broad range of additives such as acid neutralizers, antiblocks, pigments8, and anti-oxidants9. A good amount of work was also done to develop new benefits and applications. For example, although PPA were mainlyFile Size: 1MB. You can write a book review and share your experiences. Other readers will always be interested in your opinion of the books you've read. Whether you've loved the book or not, if you give your honest and detailed thoughts then people will find new books that are right for them.

    Preparation and evaluation of amphiphilic polymer as fouling-release coating in marine environment Jiang Li, Zhuolin Xie, Guoqing Wang, Chunhua Ding, Hong Jiang, Peiqing Wang Journal of Coatings Technology and Research 14 (6), Cited by: Perfluoropolyethers (PFPE's) and copolymers exhibit low surface tensions, low moduli and excellent thermal and chemical stabilities, which make them promising candidates as Cited by: 4.


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Evaluation of boundary-enhancement additives for perfluoropolyethers Download PDF EPUB FB2

Six additives were synthesized and evaluated as boundary lubrication enhancers for perfluoropolyethers. These additives included a phosphonate, a thiophosphonate, a diketone, a benzothiazole, an amide and a sulfite.

These additives were evaluated in a vacuum four-ball apparatus, at a one weight percent concentration in a perfluoropolyether. Electronic books Electronic government information: Additional Physical Format: Microfiche version: Evaluation of boundary-enhancement additives for perfluoropolyethers (OCoLC) Material Type: Document, Government publication, National government publication, Internet resource: Document Type: Internet Resource, Computer File: All Authors / Contributors.

Evaluation of boundary-enhancement additives for perfluoropolyethers (OCoLC) Material Type: Government publication, National government publication: Document Type: Book: All Authors / Contributors: Bradley A Shogrin; Evaluation of boundary-enhancement additives for perfluoropolyethers book States.

National Aeronautics and Space Administration. Six additives were synthesized and evaluated as boundary lubrication enhancers for perfluoropolyethers.

These additives included a phosphonate, a thiophosphonate, a beta-diketone, a benzothiazole, an amide and a sulfite. Evaluation of Boundary-Enhancement Additives for Perfluoropolyethers Bradley A. Shogrin, William R. Jones Jr., Pilar Herrera-Fierro, Tzuhn-Yuan Lin & Hajimu Kawa Pages: The additives are designated as TL-1, TL-2 and the carboxylic acid as FSL.

These represent the phenylphosphine, mono-phosphatriazine, and PFPE carboxylic acid, respectively (Table 2). Typical traction coefficient as a function of time traces for each appear in Figures 2(a) to 2(d), respectively. Pergamon Food and Chemical Toxicology 34 () Safety Evaluation of Perfluoropolyethers, Liquid Polymers used in Barrier Creams and other Skin-care Products G.

MALINVERNO*t, G. PANTINIt and J. BOOTMAN~ tAusimont SpA, Viale Lombar Bollate, Milan, Italy and:~Bootr~an Chemical Safety Limited, Diss Business Centre, Diss, Norfolk IP21 4EY, Cited by: Evaluation of Several Space Lubricants Using a Vacuum Four-Ball Tribometer Article (PDF Available) in Tribology Transactions 42(2) November with Reads How we measure 'reads'.

Abstract. The development of perfluoropolyethers (PFPEs) represents a major contribution of organofluorine chemistry to advanced technology. These water-white mellifluous fluids, benign toxicologically and environmentally, exhibit an impressive range of physicochemical properties that are already legendary in certain application by: Wear Eisevier Sequoia S.A., Lausanne - Printed in the Netherlands 85 PERFLUOROPOLYETHERS: THEIR PHYSICAL PROPERTIES AND BEHAVIOUR AT HIGH AND LOW TEMPERATURES* D.

SIANESI, V. ZAMBONI, R. FONTANELLI AND M. BINAGHI Montecatini Edison S.A., Diri-Centro Ricerche di Milano, Milano (Italy) Received February 3, ) SUMMARY The paper reviews the main Cited by: terminally functionalized, as polymer additives or polymer side chains.

Although chemical inertness is desired in industrial and commercial products, it raises an issue from an environmental standpoint: if compounds are chemically inert, they have the potential to be long-lived environmental by: 4. Properties of Perfluoropolyethers for Space Applications.

Tribology Transactions38 (3), DOI: / Masabumi Masuko, Nobuhiko Takeshita, Heihachiro Okabe. Evaluation of Anti-Wear Performance of PFPE-Soluble Additives under Cited by: Six additives were synthesized and evaluated as boundary lubrication enhancers for perfluoropolyethers. These additives included a phosphonate, a thiophosphonate, a beta-diketone, a benzothiazole.

The Performance of Perfluoropolyalkyethers Under Boundary Conditions Prepared by D. CARRE Mechanics and Materials Technology Center Technology Operations 15 April D T IC ELECTE Prepared for S, SPACE SYSTEMS DIVISION AIR FORCE SYSTEMS COMMAND Ios Angeles Air Force Base P.

Box Los Angeles, CA   New soluble additives were synthesized to act as anti-wear for perfluoropolyether oils. The tribological properties of the formulations of these phosphorus-containing compounds in different base oils have been evaluated by a Falex four ball test machine and by an Optimol SRV oscillating friction and wear : Antonella Di Meo, Fabio Riganti, Graziano Vezzulli, Rosaldo Picozzi.

Additives Reactives Intumescents Nonflame retardant systems. Colorants-I The marketability of a polymer product quite frequently depends on its color; therefore the purpose of adding a colorant to a resin is to overcome or mask its undesirable color characteristics and enhanceFile Size: KB.

Epoxidized perfluoropolyethers: A route to hydrophobic, negative‐tone photoresists. Sterling Chaffins. Corresponding Author. E-mail address: [email protected] Hewlett‐Packard Company, Corvallis, Oregon Hewlett‐Packard Company, Corvallis, Oregon ===Search for Cited by: 1.

A matrix of specially formulated greases composed of perfluorinated polyalkylether (PFPE) oil and telomers of polytetrafluoroethylene (PTFE) particulate thickener were tested. The PFPE greases were chosen for this evaluation because their oils have a very Cited by: 1.

Abstract. The magnetic recording industry is projected to continue growing into the foreseeable future. This growth is fueled by increasing data storage density through advances in channel and read/write head integration, tracking servo mechanisms, higher speed spindle motors, chemical integration, and Cited by: 2.

Hydroxy-terminated Perfluoropolyether (PFPE) was modified by copolymerisation with caprolactone or by addition of carboxylic or methacrylic terminal groups to increase the miscibility towards Vinyl Ester Resins (VERs).

Fluorinated oligomers were employed as additives for a commercial VER. Depending on both molecular structure and curing conditions, different morphologies were obtained. This paper presents the analysis of the world source letters [] about liquid lubricants for lubrication of the tribological nodes in space engineering for instance: mineral oils, synthetic hydrocarbons, silicones, perfluoropolyethers (PEPEs), ionic liquids, silicic by: 7.The present invention relates to additives for lubricating oils and greases which endow said lubricating oils and greases with extremely good performance characteristics under boundary lubrication conditions.

Such additives are derivatives of monofunctional or difunctional perfluoropolyethers constituted by mercaptans, sulfides, disulfides, phosphines, phosphine-oxides and phosphoric acid Author: Laura Montagna, Ezio Strepparola, Michael Quallo.W pracy przedstawiono analizę światowej literatury źródłowej [] dotyczącej cieczy smarujących stosowanych do smarowania węzłów tribologicznych techniki kosmicznej, scharakteryzowano wymagania stawiane cieczom smarującym w zastosowaniach kosmicznych oraz ich metody badań, opisano trendy rozwojowe cieczy smarujących przeznaczonych do stosowania w kosmosie.