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polymer lubricants

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Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004005
EISBN: 978-1-62708-185-6
... lubricant and polymer lubricants. The article describes several procedures for extruding specific steel parts such as tubular parts and stepped shafts. It lists problems such as tool breakage and galling or scoring of tools and explains cold extrusion of aluminum, copper, and nickel alloy parts. The article...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003012
EISBN: 978-1-62708-200-6
...Abstract Abstract Additives for plastics and elastomers are used to increase the ease of processing and to improve the properties of the final product. Additives improve processing characteristics by increasing lubricity and by stabilizing the polymer. Additives that improve properties include...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003571
EISBN: 978-1-62708-180-1
.... In this classification, wear study is separated as elastomers, thermosets, glassy thermoplastics, and semicrystalline thermoplastics. The article describes the effects of environment and lubricant on the wear failures of polymers. It presents a case study on nylon as a tribological material. The article explains...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006369
EISBN: 978-1-62708-192-4
... alternative methods of lubrication. It provides a discussion on the solid materials that have been most commonly used as lubricants: carbon-base materials, transition metal dichalcogenides, polymers, and soft metals. lubrication mechanical systems liquid lubricants greases carbon-base material...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006850
EISBN: 978-1-62708-395-9
...," and "semicrystalline thermoplastics." The article also discusses the effects of environment and lubricant on the wear failures of polymers. It presents a case study on considering nylon as a tribological material and failure examples, explaining wear resistance of polyurethane elastomeric coatings and failure...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003030
EISBN: 978-1-62708-200-6
... of the contact surfaces begin to play a significant role in friction and wear once boundary lubrication conditions are reached. Friction and Wear Applications for Polymeric Materials Table 1 shows polymers and composites that are used in representative friction and wear applications. Several...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006367
EISBN: 978-1-62708-192-4
... focuses on the widely used form known as carbon black (CB) and shows how to deal with friction and wear of polymers and composites when gamma irradiation is involved. It also discusses the role of graphite in composite materials, which is widely used as a dry lubricant. The article examines the tribology...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006407
EISBN: 978-1-62708-192-4
.... The article concludes with a discussion on polymeric lubricants and solid lubricants. lubricants rolling-element bearings lubrication mineral oils rolling bearings nonpetroleum oils polyglycols phosphate esters silicone fluids dibasic acid esters fluorinated polyethers greases corrosion...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003219
EISBN: 978-1-62708-199-3
... °F). Sputtering is often used for depositing compounds and materials that are difficult to coat by thermal evaporation techniques. Engineering applications of sputter coatings include: Corrosion and oxidation resistance, for example, nickel-chromium, MCrAlY, and polymers Lubrication...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006137
EISBN: 978-1-62708-175-7
... referred to as a “necessary evil” because it is needed for compaction but undesirable for sintering. Essentially, there are two types of lubricants used in most press and sinter PM plants ( Ref 11 ). One consists of pure waxy hydrocarbons or polymers such as ethylene bis-stearamide (EBS); the other...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006032
EISBN: 978-1-62708-175-7
..., but the problem with ferrous parts has been that available lubricants for proper ejection could not withstand warm die temperatures. This problem has been solved with improved lubricants (such as the Densmix polymer lubricant first developed and patented by Hoeganaes Corp.), that allow warm compaction...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006405
EISBN: 978-1-62708-192-4
... ). If this process is not controlled, the lubricant decomposition will lead to oil thickening, sludge formation, and the formation of varnish, resin, and corrosive acids ( Ref 3 , 4 ). Oil thickening occurs primarily because of polymerization or association of certain oxidation products. Oxidation inhibitors...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005159
EISBN: 978-1-62708-186-3
... problems during use. Coatings applied to sheet metal surfaces—most often at the sheet or strip finish mill—have been used alone or as undercoatings to lubricants applied at the press. Water-soluble polymers, phosphate conversion coatings, soap solutions, and organic resins (either with or without other...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006380
EISBN: 978-1-62708-192-4
... or if oxides or thin films did not significantly play a role in lubricating the surfaces. Clearly, adhesion can dominate wear of metals or polymers under lubricant-starved conditions. Examples of the effects of adhesion include the seizure of a shaft in a bearing, transfer of one material to its sliding...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006373
EISBN: 978-1-62708-192-4
... to their specific material properties, including chemical inertness, self-lubricating behavior, and low mass density. The wear rate of the majority of polymers during dry friction against metals is quite low. Polymers are commonly divided into the following three groups: thermoplastic polymers, thermoset...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003572
EISBN: 978-1-62708-180-1
... reinforced polymers unidirectional FRP composites wear performance REINFORCED POLYMERS are used extensively in applications where resistance to adhesive and abrasive wear failure is important for materials selection. Polymers form a special class of materials because of their self-lubricity, which...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006411
EISBN: 978-1-62708-192-4
.... Olefin copolymers (OCP), polymethacrylates (PMA), and hydrogenated styrene-diene (STD) polymers are common types of viscosity modifiers used in modem lubricants. Table 4 lists example and molecular structures of viscosity modifiers. Examples and molecular structures of viscosity modifiers Table 4...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001809
EISBN: 978-1-62708-180-1
... bushing material is porous bronze, which can be impregnated with lubricant. For a little higher cost, cast iron bearings can be used, particularly for large and flat surfaces. Polymers, gray cast iron (with large amounts of graphite), and bronzes (see the section “Bronze Bearing Materials...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006410
EISBN: 978-1-62708-192-4
... and molybdenum disulfide, or MoS 2 ) as fillers. In some cases, a lubricant is impregnated into the polymeric material, and two or three types of polymeric materials are blended, to realize suitable characteristics of the bearing material. Rubber Rubber friction, in many cases, is directly related...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006806
EISBN: 978-1-62708-329-4
... bearings. In addition to thick- and thin-walled metallic bearings, polymers (nylon, acetal, phenolics) are used as bearing materials. The polymers have self-lubricating properties; therefore, the coefficient of friction in polymer bearings is much lower compared to that of metallic bearings...