Experimental and numerical studies of downward flame spread over PMMA with and without addition of tri phenyl phosphate ?

被引：20

作者：

Korobeinichev, O. P. ^{[1
]}

Trubachev, S. A. ^{[1
,2
]}

Joshi, A. K. ^{[3
]}

Kumar, A. ^{[3
]}

Paletsky, A. A. ^{[1
]}

Tereshchenko, A. G. ^{[1
]}

Shmakov, A. G. ^{[1
,2
]}

Glaznev, R. K. ^{[1
,2
]}

Raghavan, Vasudevan ^{[4
]}

Mebel, A. M. ^{[5
]}

机构：

[1] Inst Chem Kinet & Combust SB RAS, Novosibirsk, Russia

[2] Novosibirsk State Univ, Novosibirsk, Russia

[3] Indian Inst Technol Madras, Dept Aerosp Engn, Chennai 600036, Tamil Nadu, India

[4] Indian Inst Technol Madras, Dept Mech Engn, Chennai 600036, Tamil Nadu, India

[5] Florida Int Univ, Dept Chem & Biochem, Miami, FL 33199 USA

来源：

PROCEEDINGS OF THE COMBUSTION INSTITUTE | 2021年 / 38卷 / 03期

基金：

俄罗斯基础研究基金会;

关键词：

Flame retardant; PMMA; TPP; Flame spread; Numerical modeling; MOLECULAR-WEIGHT POLYETHYLENE; TRIPHENYLPHOSPHINE OXIDE; THERMAL-DEGRADATION; POLYMERIC SOLIDS; GAS; FLAMMABILITY; POLYSTYRENE; COMBUSTION; PHOSPHORUS; SURFACE;

D O I：

10.1016/j.proci.2020.07.082

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Experimental and numerical studies of downward flame spread over polymethyl methacrylate (PMMA) with and without addition of triphenyl phosphate (TPP) are reported. Using the micro-thermocouple technique and molecular beam spectrometry, detailed flame structures of PMMA and PMMA + 10%TPP were measured. From the experiments and quantum chemistry calculations, the retardancy capability of TPP on gas-phase reaction is proposed. Addition of flame retardant (10%, 20% TPP) results in reduction of the flame spread rate, the mass burning rate and conductive heat flux from the flame to the polymer surface. Numerical calculation was carried out to simulate the downward flame spread over PMMA and PMMA-TPP slabs. Based on the assumption of the TPP gas phase retardancy performance, a modified one-step reaction rate constant with pre-exponent dependent on the TPP mass content in the polymer and TPP retardancy effectivity is proposed. The predicted results have been compared with the data from sophisticated experimental measurement on thermal and chemical structures of both PMMA and PMMA + TPP flames. (c) 2020 The Combustion Institute. Published by Elsevier Inc. All rights reserved.

引用

页码：4867 / 4875

页数：9

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