Research on the Mechanism of a Novel Si/P Flame Retardant

Ran Wang; Xiao Chun Wang

doi:10.4028/www.scientific.net/AMR.441.436

Paper Titles

Effect of Gold Nanoparticles on Fluorescence Properties of Hyperbranched Poly(amido amine)s
p.413

Synthesis of Symmetrical N,N′-Alkylidene Bisamides Using Zinc Chloride as a Lewis Acid Catalyst
p.421

Preparation and Application of Modified Nano-Titanium Dioxide Agent
p.426

Synthesis of Monochlorotriazinyl-β-Cyclodextrin as a Novel Textile Auxiliary
p.431

Research on the Mechanism of a Novel Si/P Flame Retardant
p.436

Construction of Reagentless Biosensor Based on Self-Assembly and Electrodeposition for Determination of Hydrogen Peroxide
p.442

Synthesis of a Flame Retardant Containing Nitrogen-Phosphor and its Application on Silk Fabric
p.447

Lipase Immobilization on Functional Group Controlled Surfaces
p.452

Purification and Characterization of a Bioscouring Pectate Lyase from Paenibacillus sp. WZ008 with High Activity on Pectin
p.457

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Research on the Mechanism of a Novel Si/P Flame Retardant

Abstract:

A novel Si/P flame retardant was prepared using tetraethyl orthosilicate (TEOS) and phosphoric acid (H₃PO₄). Cotton fabric treated with the flame retardant was characterized by cone calorimetry, thermogravimetric analysis (TGA), X-ray fluorescence spectroscopy, and Fourier transform infrared spectroscopy. The peak heat release rate (pHRR) and total heat release (THR) of the fabric treated with TEOS/H₃PO₄ are lower than those of the fabric treated with TEOS or H₃PO₄ alone. The HRR and THR of the treated fabric decrease from 145.66 kW/m² and 1.68 MJ/m²to 70.76 kW/m² and 0.67 MJ/m², respectively. Total smoke production decreases from 0.080 to 0.014 m²/m². TGA revealed that cellulose dehydration increases at low temperatures because of the addition of phosphoric acid and the production of charcoal. The generated charcoal is dense. The P and Si contents markedly increase, and exist in the charcoal in the form of P-O-C and Si-O bonds, respectively. On the basis of these results, we conclude that the main mechanism of TEOS/H₃PO₄ is that of a condensed-phase flame retardant. Good flame retardant synergism occurs between TEOS and H₃PO₄.