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Role of Copper Oxide on Epoxy Coatings with New Intumescent Polymer-Based Fire Retardant
Epoxy resins (EP) have been used as a thermos-setting material in the field of coating, casting, bonding agent, and laminating. However, a major drawback associated with its use is the lack of good flaming properties, and it is responsible for heavy smoke along with hazardous gases considerably limi...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7766729/ https://www.ncbi.nlm.nih.gov/pubmed/33348597 http://dx.doi.org/10.3390/molecules25245978 |
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author | Riyazuddin, Bano, Samrin Husain, Fohad Mabood Siddique, Jamal Akhter Alharbi, Khadijah H. Khan, Rais Ahmad Alsalme, Ali |
author_facet | Riyazuddin, Bano, Samrin Husain, Fohad Mabood Siddique, Jamal Akhter Alharbi, Khadijah H. Khan, Rais Ahmad Alsalme, Ali |
author_sort | Riyazuddin, |
collection | PubMed |
description | Epoxy resins (EP) have been used as a thermos-setting material in the field of coating, casting, bonding agent, and laminating. However, a major drawback associated with its use is the lack of good flaming properties, and it is responsible for heavy smoke along with hazardous gases considerably limiting its uses in various fields. In this study, N-ethanolamine triazine-piperizine, a melamine polymer (ETPMP), was established as a new charring-foaming agent and was successfully synthesized with ethanolamine, piperizine, cyanuric chloride, and melamine as precursor molecules via the nucleophilic substitution reaction method. Elemental analysis and Fourier transform infrared (FTIR) spectroscopy analysis were applied to approve the synthesis of ETPMP and confirmation of its structure and characterization. The epoxy coating of intumescent flame retardant (IFR) was equipped by introducing ETPMP, ammonium polyphosphate (APP), and copper oxide (CuO) in multiple composition ratios. CuO was loaded at various amounts into the IFR-coating system as a synergistic agent. The synergistic action of CuO on IFR coatings was scientifically examined by using different analytical tests such as vertical burning test (UL-94V), limited oxygen index (LOI), thermal gravimetric analysis (TGA), cone calorimeter, and scanning electron microscope (SEM). The results showed that small changes in the amount of CuO expressively amplified the LOI results and enhanced the V-0 ratings in the UL-94V test. The TGA data clearly demonstrate that the inclusion of CuO can transform the thermal deprivation behavior of coatings with a growing char slag proportion with elevated temperatures. Information from cone calorimeter data affirmed that CuO can decrease the burning factors by total heat release (THR) together with peak heat release rate (PHRR). The SEM images indicated that CuO can enrich the power and compression of the intumescent char that restricts the movement of heat and oxygen. Our results demonstrate a positive influence of CuO on the epoxy-headed intumescent flame retardant coatings. |
format | Online Article Text |
id | pubmed-7766729 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-77667292020-12-28 Role of Copper Oxide on Epoxy Coatings with New Intumescent Polymer-Based Fire Retardant Riyazuddin, Bano, Samrin Husain, Fohad Mabood Siddique, Jamal Akhter Alharbi, Khadijah H. Khan, Rais Ahmad Alsalme, Ali Molecules Article Epoxy resins (EP) have been used as a thermos-setting material in the field of coating, casting, bonding agent, and laminating. However, a major drawback associated with its use is the lack of good flaming properties, and it is responsible for heavy smoke along with hazardous gases considerably limiting its uses in various fields. In this study, N-ethanolamine triazine-piperizine, a melamine polymer (ETPMP), was established as a new charring-foaming agent and was successfully synthesized with ethanolamine, piperizine, cyanuric chloride, and melamine as precursor molecules via the nucleophilic substitution reaction method. Elemental analysis and Fourier transform infrared (FTIR) spectroscopy analysis were applied to approve the synthesis of ETPMP and confirmation of its structure and characterization. The epoxy coating of intumescent flame retardant (IFR) was equipped by introducing ETPMP, ammonium polyphosphate (APP), and copper oxide (CuO) in multiple composition ratios. CuO was loaded at various amounts into the IFR-coating system as a synergistic agent. The synergistic action of CuO on IFR coatings was scientifically examined by using different analytical tests such as vertical burning test (UL-94V), limited oxygen index (LOI), thermal gravimetric analysis (TGA), cone calorimeter, and scanning electron microscope (SEM). The results showed that small changes in the amount of CuO expressively amplified the LOI results and enhanced the V-0 ratings in the UL-94V test. The TGA data clearly demonstrate that the inclusion of CuO can transform the thermal deprivation behavior of coatings with a growing char slag proportion with elevated temperatures. Information from cone calorimeter data affirmed that CuO can decrease the burning factors by total heat release (THR) together with peak heat release rate (PHRR). The SEM images indicated that CuO can enrich the power and compression of the intumescent char that restricts the movement of heat and oxygen. Our results demonstrate a positive influence of CuO on the epoxy-headed intumescent flame retardant coatings. MDPI 2020-12-17 /pmc/articles/PMC7766729/ /pubmed/33348597 http://dx.doi.org/10.3390/molecules25245978 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Riyazuddin, Bano, Samrin Husain, Fohad Mabood Siddique, Jamal Akhter Alharbi, Khadijah H. Khan, Rais Ahmad Alsalme, Ali Role of Copper Oxide on Epoxy Coatings with New Intumescent Polymer-Based Fire Retardant |
title | Role of Copper Oxide on Epoxy Coatings with New Intumescent Polymer-Based Fire Retardant |
title_full | Role of Copper Oxide on Epoxy Coatings with New Intumescent Polymer-Based Fire Retardant |
title_fullStr | Role of Copper Oxide on Epoxy Coatings with New Intumescent Polymer-Based Fire Retardant |
title_full_unstemmed | Role of Copper Oxide on Epoxy Coatings with New Intumescent Polymer-Based Fire Retardant |
title_short | Role of Copper Oxide on Epoxy Coatings with New Intumescent Polymer-Based Fire Retardant |
title_sort | role of copper oxide on epoxy coatings with new intumescent polymer-based fire retardant |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7766729/ https://www.ncbi.nlm.nih.gov/pubmed/33348597 http://dx.doi.org/10.3390/molecules25245978 |
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