A comparison of these samples, with respect to their LOI values and carbon yield, showed that the FRs, which simultaneously contained phosphorus, nitrogen, and silicon elements, can provide materials with the best flame retardant properties, suggesting that there is a synergistic effect among the three elements on the flame retardant properties

The nano silica sol was prepared by sol gel method, and the boric acid, urea, cyanoguanidine, melamine cyanurate (MCA), hydroxyethane , diphosphonic acid (HEDP), and H dibenz (C,E) (,) oxaphosphorin oxide (DOPO) were added to the silica sol to modify the flame retardant through physical doping and chemical bondingAccording to the formula proposed by Lewin, the calculation of

The synergistic effects of fumed silica on the thermal and flame retardant properties of intumescent flame retardant (IFR) polypropylene based on the NP phosphorus nitrogen compound have been

The synergistic effects of fumed silica on the thermal and flameretardant properties of intumescent flame retardant (IFR) polypropylene based on the NP phosphorusnitrogen compound have been studied by Fourier transfer infrared (FTIR) spectroscopy, cone calorimeter test (CCT), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), limiting oxygen index (LOI), and UL tests.

The remarkable synergistic effect of silsesquioxane (OPS or OAPS) with DOPO has been confirmed, which improves the flame retardancy and gives rise to an obvious blowing out effectThe possible chemical reactions between silicon and phosphorus in the condensed phase have been investigated in detail, which could provide a reasonable mechanistic

IntroductionImprovement of thermal stability of cellulose based textile materials is still a challenging topicThe most important commercial flame retardants can be classified into three categories flame retardants based on phosphorus (condensed phase mechanism) and halogens (gas phase mechanism), synergistic systems containing flame retardant enhancers (nitrogen phosphorus and

In this study, silica sol (SiO sol) and KCO were used as flame retardants for woodThe synergistic effect of SiO sol and KCO on the flame retardancy, leaching resistance, and thermal properties of wood was investigatedThe limiting oxygen index results revealed a significant improvement in the flame retardancy and leaching resistance of the wood sample treated with KCO and SiO sol

Meanwhile, the Si element existed in SiO aerogel, combined with P or N presented in phosphorus flame retardants, exert a certain synergistic flame retardant and smoke suppression effect [, ]What is more, nano SiO aerogel has large specific surface area and strong adsorbability, which may help to prevent the phosphate flame retardant

A novel compound containing silicon, phosphorus and nitrogen, named (, dihydro oxa phosphaphenanthrene oxide) (trimethoxysilylmethyl) piperazine (DOPO PiP Si), was synthesized as a reactive flame retardant and applied to prepare flame retardant cotton fabricsIts structure was characterized by Fourier transform infrared spectra, H and C nuclear magnetic resonance (H NMR and