Role of Copper Oxide on Epoxy Coatings with New Intumescent Polymer-Based Fire Retardant

Autor: Rais Ahmad Khan, Jamal Akhter Siddique, Khadijah H. Alharbi, Fohad Mabood Husain, Samrin Bano, Ali Alsalme, Riyazuddin
Rok vydání: 2020
Předmět:
charring-foaming agent
Thermogravimetric analysis
Differential Thermal Analysis
Materials science
Polymers
Pharmaceutical Science
02 engineering and technology
Calorimetry
010402 general chemistry
01 natural sciences
Piperazines
Article
Analytical Chemistry
lcsh:QD241-441
chemistry.chemical_compound
Phenols
synergistic effect
lcsh:Organic chemistry
Cone calorimeter
Spectroscopy
Fourier Transform Infrared
Drug Discovery
Char
Benzhydryl Compounds
Physical and Theoretical Chemistry
Ammonium polyphosphate
Flame Retardants
Epoxy Resins
Triazines
Organic Chemistry
Epoxy
021001 nanoscience & nanotechnology
copper oxide
0104 chemical sciences
epoxy coatings
Chemical engineering
chemistry
Chemistry (miscellaneous)
visual_art
visual_art.visual_art_medium
Molecular Medicine
0210 nano-technology
Melamine
Copper
Intumescent
Fire retardant
Zdroj: Molecules, Vol 25, Iss 5978, p 5978 (2020)
Molecules
Volume 25
Issue 24
ISSN: 1420-3049
DOI: 10.3390/molecules25245978
Popis: 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.
Databáze: OpenAIRE
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