The Experts below are selected from a list of 2644374 Experts worldwide ranked by ideXlab platform
James R Myers - One of the best experts on this subject based on the ideXlab platform.
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Field Test Results of Corrosion-Resistant Coatings for Carbon-Steel Steam Condensate Return Lines
1994Co-Authors: Vincent F Hock, Henry Cardenas, James R MyersAbstract:Abstract : Steam heat is still used at many U.S. Army installations. Condensate return lines, which convey the liquid condensate that occurs throughout the system back to the boiler, form an integral part of steam distribution systems. Steam condensate return lines degrade through several site-specific mechanisms that result in corrosion and cause these systems to fail before reaching their expected design life. This report presents the results of field tests done at an Army installation using corrosion-resistant phenolic coatings to mitigate these degradation processes. The coatings were found to be effective in mitigating condensate corrosion; preliminary results indicate that this coating may extend the expected service life of condensate return lines by at least 10 percent. Phenolic coating, Condensate return Lines, Corrosion resistant coatings, Corrosion mitigation, Steam distribution system
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Field test results of corrosion-resistant coatings for carbon-steel steam condensate return lines. Interim report
1994Co-Authors: Vincent F Hock, Henry Cardenas, James R MyersAbstract:Steam heat is still used at many U.S. Army installations. Condensate return lines, which convey the liquid condensate that occurs throughout the system back to the boiler, form an integral part of steam distribution systems. Steam condensate return lines degrade through several site-specific mechanisms that result in corrosion and cause these systems to fail before reaching their expected design life. This report presents the results of field tests done at an Army installation using corrosion-resistant phenolic coatings to mitigate these degradation processes. The coatings were found to be effective in mitigating condensate corrosion; preliminary results indicate that this coating may extend the expected service life of condensate return lines by at least 10 percent. Phenolic coating, Condensate return Lines, Corrosion resistant coatings, Corrosion mitigation, Steam distribution system.
John S. Pearson - One of the best experts on this subject based on the ideXlab platform.
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Flame retardant textile Back-Coatings. Part 2. Effectiveness of phosphorus-containing flame retardants in textile Back-Coating formulations
Polymer International, 2000Co-Authors: A. Richard Horrocks, Min Y. Wang, Michael E. Hall, Femi Sunmonu, John S. PearsonAbstract:Selected phosphorus-containing flame retardants, including some intumescents, have been formulated with selected resins and applied as Back-Coatings to both cotton and cotton-polyester (35:65) blended fabrics. While all formulations raise the limiting oxygen index, only those based on ammonium polyphosphate and a cyclic phosphonate enable samples to pass a small-scale version of the simulated match test, BS5852: 1979, Source 1. As expected, the Back-Coatings containing intumescents promoted higher levels of char formation, but these did not reflect in their performance to the match test where most incurred failures. Thermogravimetric analysis suggests that the more effective flame retardants as exemplified by ammonium polyphosphate, are those which liquefy by melting and/or decomposition well below 300 °C. It is proposed that this enables wetting by these products of the back face of the fabric and their diffusion to the front face where, as the temperature rises towards 300 °C, char formation occurs before ignition of surface fibres can take place.
A. Richard Horrocks - One of the best experts on this subject based on the ideXlab platform.
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The Potential for Volatile Phosphorus-containing Flame Retardants in Textile Back-Coatings
Journal of Fire Sciences, 2007Co-Authors: A. Richard Horrocks, P. J. Davies, Baljinder K. Kandola, Andrew AldersonAbstract:A number of volatile phosphorus-containing flame retardant species has been identified as possible replacements for bromine-containing formulations used in textile Back-Coatings because of the need for vapor-phase activity. The selected retardants include tributyl phosphate (TBP), a monomeric cyclic phosphonate Antiblaze CU (Rhodia Specialites) and the oligomeric phosphate-phosphonate Fyrol 51 (Akzo). When combined with an intumescent char-forming pentaerythritol derivative (NH1197, Chemtura) and applied as a Back-Coating on to cotton and polypropylene substrates, significant improvements in overall flame retardancy are observed. One sample applied to cotton and comprising both TBP and intumescent passed the simulated match-ignition test, BS5852:1979:Part1 after a water soak at 408C for 30 min. Determination of residual phosphorus within chars shows that there is significant volatile activity present in these formulations. Addition of volatile nitrogen as melamine also demonstrated improved flame retardancy in similar formulations.
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Flame retardant textile Back-Coatings. Part 2. Effectiveness of phosphorus-containing flame retardants in textile Back-Coating formulations
Polymer International, 2000Co-Authors: A. Richard Horrocks, Min Y. Wang, Michael E. Hall, Femi Sunmonu, John S. PearsonAbstract:Selected phosphorus-containing flame retardants, including some intumescents, have been formulated with selected resins and applied as Back-Coatings to both cotton and cotton-polyester (35:65) blended fabrics. While all formulations raise the limiting oxygen index, only those based on ammonium polyphosphate and a cyclic phosphonate enable samples to pass a small-scale version of the simulated match test, BS5852: 1979, Source 1. As expected, the Back-Coatings containing intumescents promoted higher levels of char formation, but these did not reflect in their performance to the match test where most incurred failures. Thermogravimetric analysis suggests that the more effective flame retardants as exemplified by ammonium polyphosphate, are those which liquefy by melting and/or decomposition well below 300 °C. It is proposed that this enables wetting by these products of the back face of the fabric and their diffusion to the front face where, as the temperature rises towards 300 °C, char formation occurs before ignition of surface fibres can take place.
Fuhui Wang - One of the best experts on this subject based on the ideXlab platform.
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lifetime prediction for organic coating under alternating hydrostatic pressure by artificial neural network
Scientific Reports, 2017Co-Authors: Wenliang Tian, Fandi Meng, Li Liu, Fuhui WangAbstract:A concept for prediction of organic coatings, based on the alternating hydrostatic pressure (AHP) accelerated tests, has been presented. An AHP accelerated test with different pressure values has been employed to evaluate coating degradation. And a back-propagation artificial neural network (BP-ANN) has been established to predict the service property and the service lifetime of coatings. The pressure value (P), immersion time (t) and service property (impedance modulus |Z|) are utilized as the parameters of the network. The average accuracies of the predicted service property and immersion time by the established network are 98.6% and 84.8%, respectively. The combination of accelerated test and prediction method by BP-ANN is promising to evaluate and predict coating property used in deep sea.
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electrochemical corrosion behavior of composite coatings of sealed mao film on magnesium alloy az91d
Electrochimica Acta, 2006Co-Authors: Hongping Duan, Keqin Du, Fuhui WangAbstract:Protective composite coatings were prepared on magnesium alloy AZ91D by micro-arc oxidation (MAO) treatment plus a top coating with sealing agent using multi-immersion technique under low-pressure conditions. The corrosion resistance of AZ91D alloy with composite coatings was superior evidently to that with merely MAO film. SEM observations revealed that the sealing agent was integrated with MAO film by physically interlocking; therewith covered uniformly the surface as well as penetrated into pores and rnicro-cracks of MAO film. The anti-corrosion properties in 3.5% NaCl solution of the composite coatings were evaluated by using electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization measurements. Based on the results of chronopotentiometric (E similar to t) and EIS measurements for long time immersion in 3.5% NaCl solution, appropriate equivalent circuits for the composite coatings system were proposed. It follows that due to the blocking effect of the sealing agent in pores and cracks in MAO film, the composite coatings can suppress the corrosion process by holding back the transfer or diffusion of electrolyte and corrosion products between the composite coatings and solution during immersion. (c) 2005 Elsevier Ltd. All rights reserved.
Vincent F Hock - One of the best experts on this subject based on the ideXlab platform.
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Field Test Results of Corrosion-Resistant Coatings for Carbon-Steel Steam Condensate Return Lines
1994Co-Authors: Vincent F Hock, Henry Cardenas, James R MyersAbstract:Abstract : Steam heat is still used at many U.S. Army installations. Condensate return lines, which convey the liquid condensate that occurs throughout the system back to the boiler, form an integral part of steam distribution systems. Steam condensate return lines degrade through several site-specific mechanisms that result in corrosion and cause these systems to fail before reaching their expected design life. This report presents the results of field tests done at an Army installation using corrosion-resistant phenolic coatings to mitigate these degradation processes. The coatings were found to be effective in mitigating condensate corrosion; preliminary results indicate that this coating may extend the expected service life of condensate return lines by at least 10 percent. Phenolic coating, Condensate return Lines, Corrosion resistant coatings, Corrosion mitigation, Steam distribution system
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Field test results of corrosion-resistant coatings for carbon-steel steam condensate return lines. Interim report
1994Co-Authors: Vincent F Hock, Henry Cardenas, James R MyersAbstract:Steam heat is still used at many U.S. Army installations. Condensate return lines, which convey the liquid condensate that occurs throughout the system back to the boiler, form an integral part of steam distribution systems. Steam condensate return lines degrade through several site-specific mechanisms that result in corrosion and cause these systems to fail before reaching their expected design life. This report presents the results of field tests done at an Army installation using corrosion-resistant phenolic coatings to mitigate these degradation processes. The coatings were found to be effective in mitigating condensate corrosion; preliminary results indicate that this coating may extend the expected service life of condensate return lines by at least 10 percent. Phenolic coating, Condensate return Lines, Corrosion resistant coatings, Corrosion mitigation, Steam distribution system.
