Use of coupled TG-FTIR and Py-GC/MS to study combustion characteristics of conveyor belts in coal mines

Zhang, Duo; Liu, Maoxia; Wen, Huiqing; Deng, Jun; Wang, Weifeng; Shu, Chi‐Min

doi:10.1007/s10973-022-11899-z

Cited by 9 publications

(1 citation statement)

References 26 publications

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“…As shown in Figure 10a, the outer char layer of DIA/EP, DIA@PEGP-1/EP, DIA@PEGP-2/EP, DIA@PEGP-3/EP, and DIA@PEGP-4/EP primarily consisted of hydrocarbons in 1600-1400 cm À1 , aromatic ethers at 1223 and 1033 cm À1 , and aromatic substitutes at 886, 826, and 752 cm À1 . 23,32,33 Increasing the PEGP content in DIA@PEGP led to the appearance of P-O-C (1180 cm À1 ) in the outer char layer of DIA@PEGP-1/EP, DIA@PEGP-2/EP, DIA@PEGP-3/EP, and DIA@PEGP-4/EP, accompanied by an intensity enhancement. These peaks originated from the decomposition of carbon chains in PEGP and the cleavage of P O P bonds, 34 which reacted with the thermally decomposed products of the EP, providing direct evidence for PEGP's involvement in the carbonization reaction of EP.…”

Section: Flame Retardancy Mechanismmentioning

confidence: 99%

Enhancement of fire safety in epoxy resin composites through incorporation of microencapsulated diatomite

Wang,

Shen,

Jiang

et al. 2024

J of Applied Polymer Sci

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Diatomite (DIA) particles are commonly employed as flame‐retardant additives for polymers, yet their intrinsic inefficiency requires substantial quantities for optimal efficacy. To address this issue, we proposed a novel approach involving the microencapsulation of DIA with polyethylene glycol phosphate (PEGP) to enhance the flame retardancy of epoxy resin (EP). Characterization of the prepared DIA@PEGP utilized scanning electron microscopy with energy‐dispersive x‐ray spectrometry and Fourier transform infrared spectroscopy. The resulting EP composite, DIA@PEGP‐4/EP, achieved a limiting oxygen index of 33.2% and achieved a V‐0 level in vertical combustion tests. Compared to EP, DIA@PEGP‐4/EP demonstrated significantly improved fire performance, with 38.6%, 47.8%, 25.0%, 41.3%, and 60.4% reduction in peak heat release rate, total heat release, peak smoke production rate, total smoke production, and CO yield. Furthermore, the highest FPI value of 0.080 m2·s/kW for DIA@PEGP‐1/EP and the lowest FGI value of 8.734 kW/m2·s for DIA@PEGP‐4/EP, indicate that the incorporation of DIA@PEGP into EP enhances its fire safety. The flame retardancy mechanism of DIA@PEGP‐4 involves the formation of a phosphorus‐containing aromatic carbon layer during EP char formation, capturing radicals in the gas phase during combustion.

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Section: Flame Retardancy Mechanismmentioning

confidence: 99%

Enhancement of fire safety in epoxy resin composites through incorporation of microencapsulated diatomite

Wang,

Shen,

Jiang

et al. 2024

J of Applied Polymer Sci

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Thermal properties and the decomposition path of novel UV polymers of terpene-based monomer: citronellyl methacrylate

Makowskaya,

Jargieło,

Worzakowska

et al. 2023

J Therm Anal Calorim

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Thermal properties and the decomposition path of more environmentally friendly polymers in both atmospheres: inert and oxidizing have been studied with a use of simultaneous TG/FTIR/QMS and DSC methods. The polymeric materials in the UV-polymerization process of cyclohexyl methacrylate and methacrylate monomer obtained from natural terpene alcohol: citronellol, using different compositions of monomers were prepared. The glass transition temperature (Tg) and thermal stability of these high solvent and chemical resistant materials were dependent on the composition and increased with increasing cyclic monomer content in the compositions. The Tg changed from 9.8˚C to 47.5˚C and a thermal stability from 195˚C to 222˚C (inert atmosphere) and from 160˚C to 217˚C (oxidizing atmosphere). The TG/FTIR/QMS analysis proved the emission of cyclohexyl methacrylate, citronellyl methacrylate and their lower molecular mass decomposition fragments, e.g., propene, cyclohexane, citronellol, citronellal, formic acid, methacrylic acid and CO, CO2 during heating of these materials in helium and air atmospheres. It indicated the same radical mechanism of their decomposition in both atmospheres which meant that the presence of oxygen did not affect the course of decomposition but reduced the initial decomposition temperature of the copolymers.

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Numerical simulation of smoke spread characteristics and emergency escape at different scales under the interaction of ventilation and thermal driving force in mine with complex ventilation network

Hao,

Jiang,

Wang

et al. 2024

J Therm Anal Calorim

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Use of coupled TG-FTIR and Py-GC/MS to study combustion characteristics of conveyor belts in coal mines

Cited by 9 publications

References 26 publications

Enhancement of fire safety in epoxy resin composites through incorporation of microencapsulated diatomite

Enhancement of fire safety in epoxy resin composites through incorporation of microencapsulated diatomite

Thermal properties and the decomposition path of novel UV polymers of terpene-based monomer: citronellyl methacrylate

Numerical simulation of smoke spread characteristics and emergency escape at different scales under the interaction of ventilation and thermal driving force in mine with complex ventilation network

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