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polyurethane elastomeric coatings

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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
... as a tribological material and failure examples, explaining wear resistance of polyurethane elastomeric coatings and failure of an acetal gear wheel. References References 1. Briscoe B.J. and Sinha S.K. , “ Wear of Polymers ,” Proc. Inst. Mech. Eng. J., J. Eng. Tribol. , Vol 216 , 2002...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006011
EISBN: 978-1-62708-172-6
... coatings as primers and topcoats, moisture-cure aromatic elastomeric high-build coatings, moisture-cure aliphatic topcoats, two-pack aliphatic polyurethane coatings as topcoats, and one- and two-pack polyurethane dispersion coatings as sealers and topcoats. It also includes a section on the health effects...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006047
EISBN: 978-1-62708-172-6
... system and what is not. This article discusses the formulation basics of polyurea technology and compares the technology to that of polyurethane and polyurethane/polyurea systems. Some performance issues are also considered. Polyurea Systems Two-component polyurea elastomeric coating/lining...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001278
EISBN: 978-1-62708-170-2
... recently, to water-based systems. The types of chemistries that have been used for elastomeric coatings fall into two general categories: Modified polyester/polyurethane cross-linked with either melamine formaldehyde resin or polyisocyanate Modified acrylics cross-linked with either melamine...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006050
EISBN: 978-1-62708-172-6
... abrasive blast cleaned and an epoxy or zinc-base primer applied. Finish coats vary depending on the specific service environment. If ultraviolet (UV) exposure is not an issue, an epoxy coating can be used. If the steel is exposed to sunlight, a polyurethane, polysiloxane, or acrylic finish is applied...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004125
EISBN: 978-1-62708-184-9
..., “Primer Coating: Polyurethane, Elastomeric.” This material is based on polyurethane resin technology, a pigment system containing strontium chromate for corrosion inhibition, and extender pigments for gloss control. Most of the requirements for this flexible primer are similar to those in the current...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006044
EISBN: 978-1-62708-172-6
..., hydroxyethyl methacrylate, hydroxylpropyl methacrylate, and N-methylolacrylamide can be cross linked in one-component baking finishes with aminoplast resins or in two-component coatings with polyisocyanates to yield polyurethanes. Cross linking of acrylic polymers is described in more detail in a later section...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006014
EISBN: 978-1-62708-172-6
... coatings. Examples of thermosetting coatings are two-part epoxies, polyurethanes, polyureas, polyesters, polysiloxanes, and many organic zinc coatings. A coating system for steel in a mild environment may consist of power tool cleaning (SSPC-SP 3) or brush-off blast cleaning (SSPC-SP 7) and application...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006371
EISBN: 978-1-62708-192-4
... significantly reduces their wear rate. For extreme conditions such as in nuclear power plants and gas turbines, nonreusable, coated metal O-rings able to withstand temperatures from cryogenic to over 800 °C (1470 °F) may be used. Such O-rings require a smoother groove surface finish than elastomeric O-rings ( R...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006029
EISBN: 978-1-62708-172-6
... consisting of a zinc-rich primer, epoxy base coat, and a polyurethane topcoat ( Fig. 3 ). Fig. 3 Polyurethane three-coat system. Approximately 11 gal of paint are required to protect 1000 ft 2 . The primer and base coat provide corrosion protection, while the polyurethane contributes weather...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006335
EISBN: 978-1-62708-179-5
... coating options for underground service include polyethylene encasement, asphaltic, epoxy, fusion-bonded epoxy, polyurethane, polyurea, and thermal spray metallic coatings. Tape wrap coatings also are discussed as they apply to pipe joints and fittings. It should be noted that asphaltic, epoxy, fusion...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006037
EISBN: 978-1-62708-172-6
... of properties varying from elastomeric and rubberlike to very hardlike epoxies. Formulating polyurethanes is covered in numerous books, for example, The Polyurethanes Book ( Ref 14 ). The only commonality in this extraordinary range of reactive materials, reactivities, and physical properties...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006040
EISBN: 978-1-62708-172-6
... lined on the water side to reduce or stop leakage. This typically involves the use of either fabric- (glass cloth or scrim cloth) reinforced coatings or thick-film elastomeric systems, such as asphalt-modified polyurethane, flexible polyurethane, or polyurea coatings. Cracks caused by concrete shrinkage...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003692
EISBN: 978-1-62708-182-5
... amine-cured epoxies Easier to apply and topcoat, more flexible, and better moisture resistance than amine-cured epoxies. Excellent adhesion over steel and concrete. A widely used industrial and marine maintenance coating. Some formulations can be applied to wet or underwater surfaces. Polyurethanes...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006038
EISBN: 978-1-62708-172-6
... industry. abrasion resistance blistering cathodic protection pipeline coatings polyurethanes thermal resistance THIS ARTICLE DESCRIBES the coating materials, surface-preparation requirements, and application techniques used to protect underground pipelines. It provides valuable insight...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006051
EISBN: 978-1-62708-172-6
..., latex coatings, alkyds and other resins, which cure by oxidation, moisture-curing polyurethanes and inorganic zinc primers, and powder coatings. The article concludes with a discussion on the functions of the primer, intermediate coat, and topcoat in coating systems. chemical composition epoxy...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006920
EISBN: 978-1-62708-395-9
.... Gardette J.-L. et al. , in Service Life Prediction: Challenging the Status Quo , Martin J.W. , Ryntz R.A. , and Dickie R.A. , Ed., Federation of Societies for Coatings Technology , Philadelphia, PA , 2005 , p 286 6. “ Recommended Reference Solar Spectra for Industrial...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006062
EISBN: 978-1-62708-172-6
... Abstract Maintenance coating is an important part of any meaningful asset-preservation strategy in facilities producing pulp and paper and other chemicals. This article discusses maintenance coating for carbon steel structures and process equipment exposed to normal external pulp and paper mill...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004104
EISBN: 978-1-62708-184-9
... are available ( Ref 8 , 9 ). Generic coating types include alkyds, coal tar epoxies, zinc-rich coatings, polyester resins, polyurethanes, and urethanes. All coatings must meet local, state, and federal air quality regulations. The manufacturer's recommendations for surface preparation should be strictly...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004121
EISBN: 978-1-62708-184-9
... a coating system consisting of 27 mg of zinc per square centimeter (0.9 oz of zinc per square foot), a minimum of 76 μm (0.3 mil) of cross-linked polyurethane acrylic, and a minimum of 178 μm (7 mil) vinyl topcoat. For severely corrosive atmospheric conditions, the topcoat should be 381 μm (15 mils) thick...