Flame Retardant Capability Research Articles

Flame Retardant Protective Coating Applied in Textile 100% Acrylic Fabrics

ABSTRACTTextile 100 % acrylic fabrics have been used in tapestry for a long time. One of the drawbacks of this type of fabrics is its great flammability. Textile fabrics are coated with flame retardant in order to reduce the flammability. We present some results concerning the use of commercial products (Flame-Out, Borax (Na2B4O5(OH)4•8H2O), and Hexametaphosphate of Sodium (Na16P14O43) as flame retardants for textile 100 % acrylic fabrics. The flame retardant capabilities, mechanical properties and structural characteristics of the textile fabrics before and after the use of these products were investigated throughout the special textile methods for inflammability and mechanical resistibility as well as infra-red spectroscopy, X-ray diffraction and scanning electronic microscopy. After the use of the flame retardants the mechanical properties of the fabrics were improved or at least remained the same as compared to fabrics without any treatment. The use of Borax / Hexametaphosphate from Sodium /Water results in the essential increase of combustion retardation time about 2 minutes as compared with 8 seconds for untreated fabrics.

ヘテロ凝集を利用したシリカ粒子・ポリマーナノコンポジットの作製とその難燃性能

Nanocomposites prepared by mixing nanoparticles into polymer are expected to have such novel functions as flame-retardant, conductive and biodegradable capabilities. Most of the current fabrication methods of nanocomposites, however, are rather complicated and require high energy. The purpose of this study is to establish a simple fabrication method of nanocomposite based on hetero-coagulation in the liquid phase where a pair of polymer latexes are mixed with inorganic particles. We focused on flame retardancy as an index of the functional novelty, and used silica particles and acrylonitrile-styrene (AS) copolymer latex. The local structure of the aggregated materials made of these two entities through hetero-coagulation was observed via scanning electron microscopy, and found to be in a well-mixed state. The thermal decomposition temperature of the nanocomposite exceeded that of pure AS resin as measured via thermogravimetric analysis under nitrogen atmosphere. From the results of cone-calorimeter measurement and horizontal burning test, it was also found that the flame retardant capability of the present nanocomposite enhanced with an increase in the amount of silica particles or a decrease in the size of silica particles.