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materials like steel or concrete. The inherently flammable character of wood-based panels gives rise to high probability of fire hazard. In order to meet today’s increasing stringent demands for fire safety, wood-based panels have to be treated with flame

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flammable property limits its applications, so it is necessary to prepare these plastic composites with good flame retardant properties. In order to achieve above aim, many methods for improving fire retardancy of LDPE are investigated, and one of the most

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Abstract  

Flame retardant additives offer a potential short-term solution for reducing the combustibility of composites, and hence the reduction of the associated hazards. A brief review of fire modelling was performed to identify suitable mathematical expressions with which the results of the experimental flame retardant investigation were analysed. These were then used in a limited trial to compare the experimental and calculated ignition parameters. The comparison of simple mathematical equations with fire test results indicated that their ability to reasonably reproduce the experimental ignition parameters of the flame retardant treated composites is dependent on the mechanism of flame retardant activity, particularly the stage of combustion at which it is designed to be active.

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Introduction Among non-halogenated flame retardants, intumescent flame retardant (IFR) is well known as a class of flame retardants in flammable polymers for some of their merits, such as low smoke, low toxicity, low corrosion

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frequently implicate in fire due to their inflammable structural, which would cause injuries and fatalities. To avoid fire, many methods are employed to treat the wood and wood-based materials, among which the use of flame-retardant treatment would be the

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-curing epoxy resins are used as mutually reactive component mixtures. Owing to their poor handling characteristics, epoxy resins cannot be easily used in automated assembly-line processes. Therefore, it is worth to develop one-component, shelf-stable flame-retardant

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Abstract  

The degradation kinetics of polycarbonate with flame retardant additive was investigated by means of thermogravimetric analysis. The samples were heated from 30 to 900C in nitrogen atmosphere, with three different heating rates: 5, 10 and 20C min–1. The Vyazovkin model-free kinetics method was applied to calculate the activation energy (E a) of the degradation process as a function of conversion and temperature. The results indicated that the polycarbonate without flame retardant additive starts to loose mass slightly over 380C and the polycarbonate with flame retardant additive, slightly over 390C (with heating rate of 5C min–1). The activation energy for flame retardant polycarbonate and normal polycarbonate were 190 and 165 kJ mol–1, respectively.

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Combustion and thermal properties of paper honeycomb

Treatment of phosphorus-based flame retardant agents

Journal of Thermal Analysis and Calorimetry
Authors: Dong-Ho Rie, Sung-Woong Moon, and Kyung-Bum Lim

sun shade by being manufactured as a sandwich panel form. But it is vulnerable to a fire according to a property of paper, so if proper flame retardant performance is not secured, securing of fire resistance of sandwich panels and doors might be

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Nanopages
Authors: J. B.Nagy, J. N. Coleman, A. Fonseca, A. Destrée, Z. Mekhalif, N. Moreau, L. Vast, and J. Delhalle

Organic polymers - carbon nanotubes nanocomposites are synthesized either by mechanical mixing of the two components or by covalently linking the nanotubes to the matrix. The various procedures will be overviewed and the determining factors will be identified for the best mechanical properties of the composites. On the other hand, it will be shown that for highest electrical conductivity much smaller amounts of carbon nanotubes are needed if the nanotubes can be aligned. The thermal conductivity of the nanocomposites will also be overviewed. Finally, together with nanoclay particles, nanotubes are inducing remarkable flame retardant properties in the nanocomposites materials.

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Abstract  

Wood, one of the most flammable materials, was treated with various compounds containing nitrogen, phosphorus, halogens, and boron. For a study of flame retardance from the standpoint of thermal degradation, the samples were subjected to thermogravimetry (TG), differential thermal analysis (DTA) and differential thermogravimetry (DTG) in nitrogen to determine if there were any characteristic correlations between thermal degradation behaviors and the level of flame retardance. From the resulting data, kinetic parameters for different stages of thermal degradation are obtained using the method of Broido. The energies of activation for the decomposition of samples are found to be from 72 to 109 kJ mol–1. For wood and modified wood, the char yields are found to increase from 10.2 to 30.2%, LOI from 18 to 36.5, which indicates that the flame retardance of wood treated with compounds is improved. The flame retardant mechanism of different compounds has also been proposed.

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