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polytetrafluoroethylene

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Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300301
EISBN: 978-1-62708-323-2
...-molecular-weight polyethylene; PTFE, polytetrafluoroethylene; PEEK, polyetheretherketone; ABS, acrylonitrile butadiene styrene; PPS, polyphenylene sulfide Fig. 11.7 Two-body abrasion test results of selected plastics. UHMWPE, ultrahigh-molecular-weight polyethylene; PTFE, polytetrafluoroethylene...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780267
EISBN: 978-1-62708-281-5
... is smooth enough to form interfacial junctions between the polymer and the counterface. An excellent example of interfacial wear with isothermal condition is that of polytetrafluoroethylene (PTFE) sliding against a metal surface. When PTFE is slid against a smooth metal surface, friction is high...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780276
EISBN: 978-1-62708-281-5
..., and 25 PTFE/15 Graphite and MeS 2 /15 Increased ( Se ) −1 8 PI Graphite/15 and 40 PTFE/15 MoS 2 /15 Increased ( Se ) −1 8 (a) PA, polyamide; PVC, polyvinyl chloride; PTFE, polytetrafluoroethylene; EP, epoxy; PMMA, polymethyl methacrylate; PC, polycarbonate; PE, polyethylene; POM...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780259
EISBN: 978-1-62708-281-5
... that are used in representative friction and wear applications. Several of these polymers (polytetrafluoroethylene, or PTFE, polyamides, and polyethylene) are self-lubricating; that is, they form transfer films that reduce friction ( Ref 7 ). Other plastics are formulated with lubricating additives...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ems.t53730099
EISBN: 978-1-62708-283-9
... PIB Polytetrafluoroethylene F F F F PTFE symbolizes a benzene ring. Other thermoplastics have more complex backbones. Among these are nylon, polyester (PET), polycarbonate, cellulose, and poly paraphenylene terphthalamide (PPTA). Figure 9.1 illustrates the molecular structure...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350183
EISBN: 978-1-62708-315-7
... 1800 PTFE, polytetrafluoroethylene. (a) Time at which five or more individual corrosion spots have formed on the upper facing of the test panel. Copyright AEA Technology plc; used with permission. Source: Ref 2 Wear Resistance Hardness versus Wear Resistance The wear processes...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1983
DOI: 10.31399/asm.tb.mlt.t62860343
EISBN: 978-1-62708-348-5
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780159
EISBN: 978-1-62708-281-5
...-butadiene-styrene (ABS) … … 466 871 Polymethylmethacrylate (PMMA) 280–300 536–572 450–462 842–864 Polycarbonate (PC) 375–467 707–873 477–580 891–1076 Polyether-imide (PEI) 520 968 535 995 Polyether sulfone (PES) 560 1040 560 1040 Polytetrafluoroethylene … … 530 986...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780249
EISBN: 978-1-62708-281-5
... cycles-to-failure curves for several polymers tested at a frequency of 30 Hz. PS, polystyrene; EP, epoxy; PET, polyethylene terephthalate; PMMA, polymethyl methacrylate; PPO, polyphenylene oxide; PE, polyethylene; PP, polypropylene; PTFE, polytetrafluoroethylene. Source: Ref 5 Experiments...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300391
EISBN: 978-1-62708-323-2
...) of aluminum versus liquid-covered polytetrafluoroethylene Fig. 14.9 Effect of Sommerfeld number on oil film thickness. Z , dynamic viscosity; N , shaft revolutions/min; P , load (force on projected bearing area) Fig. 14.10 Effect of oil viscosity and load (Fn, force) on maximum bearing...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780115
EISBN: 978-1-62708-281-5
... 200 390 Polyvinylidene chloride −17 1 198 390 Polyvinylidene fluoride −35 −30 … … Polytetrafluoroethylene −97, 126 −140, 260 327 620 Polychlorotrifluoroethylene 45 115 220 430 Polychloroprene (chloroprene rubber, or neoprene) −50 −60 80 175 Polyacrylonitrile 104...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.tt2.t51060273
EISBN: 978-1-62708-355-3
...-acetate, nonrigid 0.021 0.003 0.0027 0.0004 PET, polyethylene terephthalate; ECTFE, ethylene tetrafluoroethylene; ETCFE, ethylene chlorotrifluoroethylene; PVC, polyvinyl chloride; PVF, polyvinyl formal; FEP, fluorinated ethylene propylene; PTFE, polytetrafluoroethylene ...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780164
EISBN: 978-1-62708-281-5
... Polytetrafluoroethylene 2.0 Polar resins Polyvinyl chloride (rigid) 3.2–3.6 Polyvinyl acetate 3.2 Polyvinyl fluoride 8.5 Nylon 4.0–4.6 Polyethylene terephthalate 3.25 Cellulose cotton fiber (dry) 5.4 Cellulose kraft fiber (dry) 5.9 Cellulose cellophane (dry) 6.6 Cellulose...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780003
EISBN: 978-1-62708-281-5
..., fluorine, oxygen, and nitrogen. Polytetrafluoroethylene (PTFE) is one of the simplest nonhydrocarbon carbon-chain thermoplastics. Its mer ( Fig. 14 ) resembles that of PE with fluorine substituted for hydrogen. Polymethyl methacrylate (PMMA) is a carbon-chain polymer with a more complex mer unit ( Fig. 14...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780343
EISBN: 978-1-62708-281-5
...; PVC, polyvinyl chloride; PTFE, polytetrafluoroethylene. Source: Ref 24 To establish a relationship between various thermal properties, seven engineering plastics from the Society of Plastics Engineers resin kit ( Ref 27 ) were evaluated by DSC, TMA, and TGA ( Table 4 , Fig. 27...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300335
EISBN: 978-1-62708-323-2
... Fig. 12.1 Estimate of the relative use of material modifications to surfaces to (a) lubricate/alter function or appearance and (b) harden surfaces/bulk material. PTFE, polytetrafluoroethylene; PFA, perfluoroalkoxy; DLC, diamond-like carbon; PVD, physical vapor deposition; HVOF, high-velocity...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500083
EISBN: 978-1-62708-317-1
... (450 °F). When the forming temperature exceeds 230 °C, the choice of lubrication is generally restricted to molybdenum disulfide, a colloidal solution of graphite, and polytetrafluoroethylene (PTFE). These lubricants should be cleaned from magnesium parts as soon as possible to avoid corrosion...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780238
EISBN: 978-1-62708-281-5
...), polytetrafluoroethylene (PTFE), polypropylene (PP), polymethyl methacrylate (PMMA), and epoxy (EP)—exhibit a stress limit below which failure does not occur in less than 10 7 cycles for these testing conditions. Because plastics are sensitive to many factors, including frequency, temperature, mean stress, and molecular...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300363
EISBN: 978-1-62708-323-2
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350043
EISBN: 978-1-62708-315-7
...-toughened alumina. (d) ZTA, zirconia-toughened alumina. (e) Teflon, polytetrafluoroethylene Friction coefficient data for polymers sliding on various materials and corresponding references and test conditions Table 3 Friction coefficient data for polymers sliding on various materials...