Academic literature on the topic 'Polyurethane'

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Journal articles on the topic "Polyurethane"

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Zych, Krzysztof, Robert Pełech, and Zbigniew Czech. "Thermal degradation of poly(alkyl methacrylates) and polyurethane pressure-sensitive adhesives." Polish Journal of Chemical Technology 12, no. 4 (2010): 40–43. http://dx.doi.org/10.2478/v10026-010-0048-4.

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Thermal degradation of poly(alkyl methacrylates) and polyurethane pressure-sensitive adhesives Gas chromatography, coupled with the temperature controlled pyrolysis technique, can be used as a quick method of identification of polymers such as acrylates, methacrylates and polyurethanes. Polymers based on alkyl methacrylates are widely used as construction materials and coatings. Polyurethanes are widely used as self-adhesives, sealants and electrical products (due to polyurethane's low glass transition temperature Tg). The aim of this work is to investigate which products can be obtained from
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Domańska, Agata, Anna Boczkowska, Marta Izydorzak-Woźniak, Zbigniew Jaegermann, and Małgorzata Grądzka-Dahlke. "Polyurethanes from the crystalline prepolymers resistant to abrasive wear." Polish Journal of Chemical Technology 16, no. 4 (2014): 14–20. http://dx.doi.org/10.2478/pjct-2014-0063.

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Abstract The research aimed at the selection of polyurethanes synthesized from poly(tetramethylene ether) glycol (PTMEG), as well as from two different isocyanates 4,4′-methylenebis(cyclohexyl)isocyanate (HMDI) and 4.4′-methylenebis(phenyl isocyanate) (MDI) in order to obtain polyurethane with increased resistance to abrasive wear and degradation for bio-medical application. Polyurethanes were fabricated from crystalline prepolymers extended by water. The paper presents preliminary results on polyurethane surface wettability, friction coefficient for different couples of the co-working materia
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Zagożdżon, Izabela, Paulina Parcheta, and Janusz Datta. "Novel Cast Polyurethanes Obtained by Using Reactive Phosphorus-Containing Polyol: Synthesis, Thermal Analysis and Combustion Behaviors." Materials 14, no. 11 (2021): 2699. http://dx.doi.org/10.3390/ma14112699.

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Phosphorus-containing polyol applications in polyurethane synthesis can prevent volatilization of flame retardants and their migration on the surface of a material. In this work, novel cast polyurethanes were prepared by a one-step method with the use of different amounts of phosphorus-containing polyol, 4,4′–diphenylmethane diisocyanate and 1,4-butanediol. The chemical structure, thermal, physicochemical and mechanical properties and flame resistance of the prepared materials were investigated. The results obtained for cast flame-retarded polyurethanes were compared with cast polyurethane syn
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Carbonell-Blasco, Pilar, Iulian Antoniac, and Jose Miguel Martin-Martinez. "New Polyurethane Sealants Containing Rosin for Non-Invasive Disc Regeneration Surgery." Key Engineering Materials 583 (September 2013): 67–79. http://dx.doi.org/10.4028/www.scientific.net/kem.583.67.

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Different polyurethane sealants were prepared by reacting methylene dyísocyanate and polyadipate of 1,4 butane diol (Mw : 2500 daltons) by using the prepolymer method and different mixtures of rosin and 1,4 butane diol were used as chain extenders. The polyurethanes were characterized by plate-plate rheology, molecular weight distribution, Differential Scanning Calorimetry (DSC), and Laser Confocal Microscopy. The tack of the polyurethanes sealants was obtained by using a modified probe tack method, and their adhesion was obtained by T-peel test of leather/polyurethane sealant/leather joints a
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Munteanu, Dan, Constantin Bolcu, and Vasile Ostafe. "Polyurethane-Bound Stabilisers." Polymers and Polymer Composites 8, no. 2 (2000): 87–100. http://dx.doi.org/10.1177/0967391120000802087.

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Addition of antioxidants and light stabilisers into the polyol component before its reaction with the isocyanate com ponent is common practice for polyurethane stabilisation. The stabilisers usually contain single OH and NH groups, which are involved in the mechanisms of stabilisation and the additives may then be regarded as monofunctional stabilisers. The OH and NH groups are very reactive towards the -N=C=O (isocyanate) groups so that a reaction between the stabiliser and the isocyanate groups during the synthesis of the polyurethane may occur to some extent. The stabiliser will become part
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Schmidt and Eschig. "Hydrophobilization of Furan-Containing Polyurethanes via Diels–Alder Reaction with Fatty Maleimides." Polymers 11, no. 8 (2019): 1274. http://dx.doi.org/10.3390/polym11081274.

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We describe new hydrophobic functionalized linear polyurethane resins by combining N-alkyl maleimides via the Diels–Alder reaction with linear furan-modified polyurethanes. This procedure provides the opportunity for the post-polymerization-functionalizing of polyurethanes. Access to furan-bearing polyurethanes is achieved via the reaction of a furan-containing diol, polyethylenglycol (PEG), and different diisocyanates. The furan-containing diol is obtained from the reaction of furfurylamine and two equivalents of hydroxyalkyl acrylate. The resulting furan-bearing polyurethanes are reacted wit
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Sur, Suk-Hun, Pil-Jun Choi, Jae-Wang Ko, Jae-Yeon Lee, Young-Hee Lee, and Han-Do Kim. "Preparation and Properties of DMF-Based Polyurethanes for Wet-Type Polyurethane Artificial Leather." International Journal of Polymer Science 2018 (September 2, 2018): 1–9. http://dx.doi.org/10.1155/2018/7370852.

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DMF-based polyurethanes for wet-type polyurethane artificial leather were prepared using 4,4′-diphenylmethane diisocyanate (MDI) as diisocyanate, 1,4-butanediol (BD)/1,6-hexanediol (HD) as chain extender, and four different macroglycols (MW: 2000): poly(butylene/3-methyl-pentylene adipate) glycol based on 1,4-butanediol/3-methyl-1,5-pentanediol (MPD), poly(butylene adipate) glycol based on BD, polycarbonate glycol based on HD/MPD, and polycarbonate glycol based on HD. The properties of the as-polymerized polyurethane solutions and their films and the size/uniformity of cells of the foam layer
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Yeligbayeva, G., M. Khaldun, Abdassalam A. Alfergani, et al. "Polyurethane as a versatile polymer for coating and anti-corrosion applications: A review." Kompleksnoe Ispolʹzovanie Mineralʹnogo syrʹâ/Complex Use of Mineral Resources/Mineraldik Shikisattardy Keshendi Paidalanu 331, no. 4 (2024): 21–41. http://dx.doi.org/10.31643/2024/6445.36.

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The development of polyurethane materials and process optimization are currently the subjects of extensive study. Polyurethane is characterized by high physicochemical and operational properties. Polyurethanes have high wear resistance, and oil and gasoline resistance. They have excellent thermophysical and elastic properties. This allows the use of polyurethanes in many industries where materials with high-performance properties are required. Polyurethanes are widely used in many industrial applications, protective coating manufacturing, and anti-corrosion agent applications. A significant nu
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Chen, Lijun, and Wei Jiang. "Modification of polyurethane with novel blocking agent." Pigment & Resin Technology 43, no. 2 (2014): 97–103. http://dx.doi.org/10.1108/prt-04-2013-0030.

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Purpose – Fluorinated polyurethane combines some virtues of polyurethane and fluorinated polymer, such as low water absorption, attractive surface properties, good wearability and high weatherability. Fluorocarbon chains have been incorporated into polyurethanes by fluorinated diisocyanates, chain extenders, polyether glycols, polyester glycols and end-cappers. However, the fluorinated polyurethane, which is prepared with monohydric fluorocarbon alcohol, is seldom reported. The purpose of this research is to prepare and apply the novel fluorocarbon alcohols with side chain to modify polyuretha
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Mo, Ya, Xiaoyue Huang, and Chuanqun Hu. "Recent Advances in the Preparation and Application of Bio-Based Polyurethanes." Polymers 16, no. 15 (2024): 2155. http://dx.doi.org/10.3390/polym16152155.

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Amid environmental pollution and resource depletion, developing and utilizing biomass resources as alternatives to petroleum is a prominent research focus. Driven by environmental protection and sustainable development, the shift from petroleum-based to bio-based polyurethane is a prevailing trend in polyurethane material development. Biomass sources such as vegetable oil, polysaccharides, and lignin offer extensive application prospects in bio-based polyurethane production. Functional modifications of these polyurethanes can further expand their application range. This article explores the pr
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Dissertations / Theses on the topic "Polyurethane"

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Alsaffar, Eman. "Waterborne polyurethane ionomers : structure-property relationships of elastomeric polyurethane ureas and polyurethane ionomers." Thesis, Loughborough University, 2006. https://dspace.lboro.ac.uk/2134/36047.

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Two groups of water-borne polyurethane ionomers were synthesised using well known methods of synthesis in order to determine the type of elastomers that may be obtained from each method. To begin with, the conventional methods of synthesis for water-borne polyurethane dispersions (WPUDs) in which the process of chain extension occurs in the presence of water was evaluated. This method is restricted to the use of diamines as chain extenders. It was demonstrated that the use of diamines, whether they are primary such as ethylene diamine, or tertiary such as NN'-dimethyl ethylene diamine lead to
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Jung, Changdo. "SYNTHESIS OF THERMOPLASTIC POLYURETHANES AND POLYURETHANE NANOCOMPOSITES UNDER CHAOTIC MIXING CONDITIONS." University of Akron / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=akron1124809046.

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Frahn, Stephanie. "Einfluss der Stoffzustände des Quellmittels auf das Quellverhalten von chemisch vernetzten Polymeren in Lösemitteln." [S.l. : s.n.], 1997. http://www.ub.uni-duisburg.de/diss/diss9802/.

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Kohlstrung, Rainer. "Polyurethan-Präpolymere auf der Basis von Sacchariden und Saccharid-Derivaten von der Selektivität zur anwendungstechnischen Prüfung /." [S.l. : s.n.], 2001. http://elib.tu-darmstadt.de/diss/000122.

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Ha, Seung-kyu. "Starch incorporated polymerization of thermoplastic polyurethan." [S.l. : s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=965659852.

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Bidari, Khosrow. "Investigation of adhesion occurring between polyurethane substrates and polyurethane surface coatings." Thesis, Loughborough University, 1991. https://dspace.lboro.ac.uk/2134/10447.

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Lam, Kit Sang. "Biodegradability of waterborne polyurethane and polyurethane : polyacrylate coating materials in soil /." View abstract or full-text, 2008. http://library.ust.hk/cgi/db/thesis.pl?CBME%202008%20LAM.

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Jahny, Karsten. "Amphiphile Polyurethan-Makromere als Emulgatoren und Comonomere für die heterophasige Polymerisation hydrophober Monomere." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2002. http://nbn-resolving.de/urn:nbn:de:swb:14-1025614462796-67942.

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Die Arbeit beschreibt die Synthese und Charakterisierung von amphiphilen Polyurethanen mit Emulgatoreigenschaften für die Polymerisation hydrophober Monomere in wässriger Phase. Der Emulgator wurde mit kolloid- und polymerchemischen Methoden hinsichtlich seiner grenzflächenaktiven Eigenschaften sowie einer Strukturbildung in wässriger Phase charakterisiert. Die Emulsionspolymerisation mit dem polymeren PU-Emulgator am Beispiel von Styrol ist untersucht worden. Dabei sind die Partikelgrössen und deren Verteilung in Abhängigkeit von Reaktionsparametern mittels Photonen-Korrelations-Spektroskopie
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McLennaghan, A. W. "Linear segmented polyurethane electrolytes." Thesis, University of Strathclyde, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382418.

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Ostrogorsky, Aleksandar G. "Aging of polyurethane foams." Thesis, Massachusetts Institute of Technology, 1985. http://hdl.handle.net/1721.1/15016.

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Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1986.<br>MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING<br>Bibliography: leaves 151-153.<br>by Aleksandar G. Ostrogorsky.<br>Sc.D.
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Books on the topic "Polyurethane"

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Hepburn, C. Polyurethane elastomers. 2nd ed. Elsevier Applied Science, 1992.

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Evans, Robert M. Polyurethane sealants: Technology and applications. Technomic Pub. Co., 1993.

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Hepburn, C. Polyurethane Elastomers. Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2924-4.

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Prisacariu, Cristina. Polyurethane Elastomers. Springer Vienna, 2011. http://dx.doi.org/10.1007/978-3-7091-0514-6.

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Hepburn, C. Polyurethane Elastomers. Springer Netherlands, 1992.

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Ron, Herrington, Hock Kathy, and Autenrieth Randy, eds. Flexible polyurethane foams. 2nd ed. Dow Chemical Co., 1997.

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Turner, Richard. Polyurethane-coated fabrics. SATRA, 1985.

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British Rubber Manufacturers Association Ltd. Rubber and polyurethane directory. BRMA, 1995.

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Association, British Rubber Manufacturers', ed. BRMA rubber & polyurethane directory. British Rubber Manufacturers' Association, 1987.

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Association, British Rubber Manufacturers'. Rubber and polyurethane directory. British Rubber Manufacturers' Association, 1992.

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Book chapters on the topic "Polyurethane"

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Gooch, Jan W. "Polyurethane." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_9241.

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Gooch, Jan W. "Polyurethane." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_9249.

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Türk, Oliver. "Polyurethane." In Stoffliche Nutzung nachwachsender Rohstoffe. Springer Fachmedien Wiesbaden, 2013. http://dx.doi.org/10.1007/978-3-8348-2199-7_17.

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Dick, John S., and Charles P. Rader. "Polyurethane." In Raw Materials Supply Chain for Rubber Products. Carl Hanser Verlag GmbH & Co. KG, 2014. http://dx.doi.org/10.1007/978-1-56990-538-8_7.

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Ezzati, Noushin, Ebad Asadi, Majid Abdouss, and Elaheh Kowsari. "Polyurethane." In Functionalized Polymers. CRC Press, 2021. http://dx.doi.org/10.1201/9780367821913-11.

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Hepburn, C. "Polyurethane Adhesives." In Polyurethane Elastomers. Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2924-4_8.

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Hepburn, C. "Chemistry and Basic Intermediates." In Polyurethane Elastomers. Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2924-4_1.

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Hepburn, C. "Water Dispersions of Polyurethane Elastomers." In Polyurethane Elastomers. Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2924-4_10.

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Hepburn, C. "Analysis and Characterization of Polyurethane Elastomers." In Polyurethane Elastomers. Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2924-4_11.

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Hepburn, C. "Special Types of Polyurethane Elastomers." In Polyurethane Elastomers. Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2924-4_12.

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Conference papers on the topic "Polyurethane"

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Doolittle, Michael L. "An Analysis of the Advantages and Disadvantages of Ultra Long-Life Coating Systems for Water Storage Tanks." In Paint and Coatings Expo (PACE) 2007. SSPC, 2007. https://doi.org/10.5006/s2007-00027.

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Alkyds, the much-trusted coatings of the past were summarily replaced by the superior performance of the polyurethane coatings. The polyurethanes were then supplemented by the polyurethane with clear coat and the polyurethane with UV protector. These coatings promised a twenty-year life and resistance to fading. But now, those coatings are being challenged by the newcomer on the block, the ultra-high performance coatings which are promoted to perform well for up to thirty years.
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Skaja, Allen, David Tordonato, and Bobbi Jo Merten. "Field and Laboratory Experience with Polyurethane Pipe Linings." In SSPC 2014 Greencoat. SSPC, 2014. https://doi.org/10.5006/s2014-00059.

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Abstract The Bureau of Reclamation’s Materials Engineering Research Laboratory has been evaluating polyurethane pipe linings for severe immersion exposure, specifically for outlet works and penstock linings. Polyurethanes have several advantages over other coatings, such as application temperature range, faster cure times in cold temperatures, rapid return to service, coat large surface area rapidly, low viscosity (i.e. accommodates pumping over longer distances), and greater impact resistance. The laboratory testing has utilized Electrochemical Impedance Spectroscopy as a screening/ranking me
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Le, Dustin, and Mike Babiarz. "Ambient Curing and Thermosetting of Polyurea and Polyurethane Castable Liner." In Paint and Coatings Expo (PACE) 2010. SSPC, 2010. https://doi.org/10.5006/s2010-00003.

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Abstract For the last several decades, polyurethane/polyurea spray-applied elastomeric coatings have gained market acceptance as durable, and long lasting protective coatings. With the advances of the high-pressure impingement spray equipment technology during mid-to-late 1980’s, fast setting, two component polyurethane/polyurea coatings finally have a fighting chance in the protective coatings market. Polyurethane and polyurea coatings are well known for their high performance, corrosion resistance, chemical resistance, and high impact resistance in a various ambient temperature. However when
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aus der Wieschen, Andreas, Matthias Wintermantel, Todd Williams, and Ahren Olsen. "Efficient Polyurethane Pipe Coatings for Harsh Conditions." In SSPC 2014 Greencoat. SSPC, 2014. https://doi.org/10.5006/s2014-00065.

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Abstract Solvent-free two component polyurethane (2-K-PU) systems have been approved as suitable protective coatings systems since many years. Two component polyurethanes are favored within pipeline and tank constructions where high performance and durability have to be accomplished under harsh conditions (e.g. field application, high service temperatures, high salt load, wet soil conditions etc.). Building blocks of rigid polyurethanes were screened in the lab and resulting raw material property profile was modified in order to fulfill the requirements. Test coatings were developed and the fo
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Rahman, Mohammad Mizanur. "Biodegradable SPC Polyurethane Coating." In CORROSION 2020. NACE International, 2020. https://doi.org/10.5006/c2020-14721.

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Abstract Self-polishing coatings (SPC) are widely being used in marine structures to protect metals from fouling. After restrictions on using toxic metals, coating industry are seeking environmentally-friendly SPC coatings that maintain their performance over extended periods. Unfortunately, most of the commercial SPC coatings contain different toxic materials, besides their performance is inadequate to prevent fouling under adverse conditions. The main mechanism of SPC coating is to facilitate the continuous renewal of the surface and the release of active compound via a hydrolysis reaction o
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Braekke, Anders. "Impact Resistant Polyurethane Topcoat." In Paint and Coatings Expo (PACE) 2009. SSPC, 2009. https://doi.org/10.5006/s2009-00005.

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For the last 20 years polyurethane has been the leading topcoat technology in corrosion systems for both marine and industrial use. Performance, protection, appearance and total cost effectiveness are some of the factors customers have taken into consideration. Customers have a long list of demands and polyurethane has become a technology choice for a wide number of end markets.
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Zhao, Wendy. "One-Component Waterborne Polyurethane Dispersion (PUD) Topcoat with Two-Component Polyurethane Performance." In Paint and Coatings Expo (PACE) 2006. SSPC, 2006. https://doi.org/10.5006/s2006-00080.

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Abstract A newly developed one-component waterborne polyurethane dispersion (PUD) topcoat, with VOC below 200 G/L, offers exterior durability, color and gloss retention and chemical resistance comparable to two-component solventborne and waterborne polyurethane coatings. Performance properties of the new innovative PUD technology are reviewed and compared to two-component solventborne and waterborne polyurethane systems used in industrial maintenance applications.
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Popa, Paul, John Argyropoulos, Yanxiang Li, Nahrain Kamber, and Jeff Anderson. "Isocyanate Free Polyurthane Coatings for Industrial Metal Applications." In SSPC 2015 Greencoat. SSPC, 2015. https://doi.org/10.5006/s2015-00047.

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Abstract Two component polyurethane coatings are used in a variety of applications including industrial maintenance. These coating systems were introduced in the 1970’s primarily as topcoats; characterized by their excellent weatherability, toughness, and chemical and stain resistance. When formulated as ambient cured systems, traditional two component polyurethanes typically sacrifice cure time for pot life unless plural component application equipment is employed. This paper describes a novel ambient cure, two component isocyanate free polyurethane coating technology. One notable benefit is
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Serate, Duane, Chris Semaka, Hugo Caouette-Fritsch, and Jeff Liu. "Compatibility of Non-Metallic Liners for Dense Slurry (Oil Sands) Applications." In CORROSION 2017. NACE International, 2017. https://doi.org/10.5006/c2017-09637.

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Abstract Dense slurry pipelines in the Canadian oil sands industry are exposed to significant wear from low-stress sliding abrasion and corrosion. Polyurethane and neoprene lined piping is an attractive alternative to extend dense slurry piping service life over the current non-metallic dense piping materials. The advantage of polyurethane and neoprenes is that they provide corrosion-protection from the aqueous slurry, good heat insulation properties and excellent low-stress sliding abrasion resistance. The mechanical properties of polyurethanes and neoprenes can be optimized for specific appl
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Zeng, Jing. "Polyurethanes in Seamless Polymer Flooring Systems." In Paint and Coatings Expo (PACE) 2009. SSPC, 2009. https://doi.org/10.5006/s2009-00057.

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Polyurethane technologies have demonstrated their applications in a variety of seamless polymer flooring systems. Aliphatic polyurethanes are widely used as topcoats since they provide combinations of good color stability, gloss retention, abrasion resistance, chemical resistance, and weathering resistance. Recent development in polyaspartic chemistry offers more options in coating thickness, curing temperatures, and solids content. Aromatic polyurethanes are used in resilient coatings and modified concretes due to their flexibility, toughness, and thermal shock resistance. This article will d
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Reports on the topic "Polyurethane"

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Kunc, Vlastimil, John M. Lindahl, Robert P. Minneci, et al. Additive Manufacturing of Polyurethane Materials. Office of Scientific and Technical Information (OSTI), 2017. http://dx.doi.org/10.2172/1412056.

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Hancock, Lawrence F., and Richard Minns. 100% Solids Polyurethane Sequestration Coating. Defense Technical Information Center, 2014. http://dx.doi.org/10.21236/ada606597.

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SEAMAN CORP WOOSTER OH. Improved Polyurethane Storage Tank Performance. Defense Technical Information Center, 2010. http://dx.doi.org/10.21236/ada540405.

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Lu, Wei-Yang. Mechanical Characterization of Rigid Polyurethane Foams. Office of Scientific and Technical Information (OSTI), 2014. http://dx.doi.org/10.2172/1166886.

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Guess, T. R. Isothermal aging of three polyurethane elastomers. Office of Scientific and Technical Information (OSTI), 1996. http://dx.doi.org/10.2172/230372.

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Glicksman, L., A. Ostrogorsky, and S. Chiappetta. Effective conductivity of aging polyurethane foam. Office of Scientific and Technical Information (OSTI), 1986. http://dx.doi.org/10.2172/5758263.

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Brown, Hope. A Review of Polyurethane Aging Studies. Office of Scientific and Technical Information (OSTI), 2023. http://dx.doi.org/10.2172/1985821.

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CHU, TZE YAO, KENNETH L. ERICKSON, and MICHAEL L. HOBBS. Modeling Decomposition of Unconfined Rigid Polyurethane Foam. Office of Scientific and Technical Information (OSTI), 1999. http://dx.doi.org/10.2172/14954.

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Kranjc, M. DYNAMIC IMPACT TESTING OF RIGID POLYURETHANE FOAMS. Office of Scientific and Technical Information (OSTI), 2017. http://dx.doi.org/10.2172/1365663.

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Mondy, Lisa Ann, Christine Cardinal Roberts, Grant Soehnel, et al. Bubble-Size Evolution during Polyurethane Foam Expansion. Office of Scientific and Technical Information (OSTI), 2016. http://dx.doi.org/10.2172/1599982.

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