نتایج جستجو برای: fire retardancy
تعداد نتایج: 43235 فیلتر نتایج به سال:
To improve the flame retardancy of bamboo materials, layer by (LbL) self-assembly phytic acid (PA)-polyethyleneimine (PEI) on surface shaving super specimens with different solution concentrations PA-PEI and times LbL was completed in this study. Fourier transform infrared analysis results showed that PEI well assembled to a hydrogen bond PA as intermediation. The application significantly prom...
The present investigation highlights the feasibility of a polymer grafting process to enhance the durability and flame retardancy of rice straw towards application as a low cost roofing material. The success of this grafting methodology was perceived to depend upon a bi-step pre-treatment process encompassing delignification and inorganic salts dispersion. Subsequently free radical polymer graf...
nickel hydroxide nanostructures were synthesized by a hydrothermal reaction. the effect of different precursors and surfactants on the morphology of nickel hydroxide nanostructures was investigated. nanostructures were characterized by x-ray diffraction, energy dispersive x-ray spectroscopy, scanning electron microscopy and fourier transform infrared spectroscopy. the influence of ni(oh)2 nano...
In the flame retardancy of biopolymer matrix and natural fibre reinforcement containing green composites, researchers face multiple challenges, such as low thermal stability, candlewick effect fibres compatibility issues. Cellulosic have been shown to char-promoting properties advantageously interact with intumescent systems. this work, melamine-polyphosphate was combined neat or flame-retardan...
Thermal control methods based on phase change materials have a wide range of applications, from thermal management to latent heat storage for renewable energy systems, with intermittent availability. Organic PCMs some advantages over inorganics; however, their major drawback is flammability. In critical such as buildings, electric vehicles, and aerospace flammability an issue that must be addre...
A study aimed to prepare cellulose-based hydrophobic, lightweight, and flame retardant foam composites. Cellulose was activated by phosphoric acid followed blending with dolomite clay of different loading ratios. Gelatin/tannin as an adhesive system used a binder. solution the environmentally friendly silicone rubber (RTV) applied onto samples via spray-coating improve their water repealing per...
Consumer and industrial products are manufactured from a range of materials that are selected for specific bulk properties, cost and/or ‘look and feel’. However, many materials chosen in this way do not display the optimum surface properties. This presents an opportunity for surface modifications to apply desirable properties such as fire retardancy, anti-microbial, protein resistance and, wate...
Moisture content (MC) is one of the most important factors that can affect many physical and mechanical properties of wood and veneers. MC strongly affects the final strength and durability of joints, development of surface checks in the wood and dimensional stability of the bonded assembly. In this study, plywood panels made from Alnus glutinosa (Alder), Fagus orientalis (Beech) and Picea orie...
Various morphologies of silica nanoparticles were synthesized by a microwave-assisted Pechini method. Silica nanostructures were synthesized via a fast reaction between tetra ethyl ortho silicate and ammonia at presence citric acid and other effective agents in Pechini procedure. Then for preparation of polymer-matrix nanocomposites, SiO2 nanoparticles were added to poly carbonate (PC) and poly...
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