Flame retardant and hydrophobic cotton fabrics from intumescent coatings

Abstract

Intumescent flame retardant and hydrophobic coatings, consisting of sodium montmorillonite (MMT), am moniu m d ihy dro gen ph os pha te ( ADP), an d methyltrimethoxysilane (MTMS), were prepared via in situ sol-gel and self-assembly techniques to acquire multifunctional cotton fabrics. The impact of MTMS concentration on hydrophobicity, fire resistance, thermal stability, and heat release behavior of the coated fabrics was investigated. A Si-O-Si network structure was generated via the hydrolysis-condensation reaction of MTMS, induced by the catalysis of ADP. After treated by the coating with 2.0 wt.% of MTMS, the cotton fabric with a total uptake of 22.7 wt.% achieved appreciable flame retardancy and hydrophobicity, as well as satisfactory thermal stability and heat release behaviors. Overall, this research provides a facile and effective approach to prepare flame retardant and hydrophobic cotton fabrics.

Synthesis of 3,4,5-trihydroxy-2-[(hydroxyimino) methyl] benzoic acid as a novel rust converter

“…Metal corrosion is a serious problem all over the world and therefore a number of methods and materials have been developed to minimize the corrosion processes and environment problems (1)(2)(3)(4)(5)(6). Among the frequently reported protection methods to prevent metal corrosion, such as organic or inorganic coating (7,8), electrochemical protection (9) and corrosion inhibition (10)(11)(12)(13), the most effective and economic technique is the application of coating, particularly anticorrosive coatings (14,15).…”

Nanoreinforcements of Two-Dimensional Nanomaterials for Flame Retardant Polymeric Composites: An Overview

“…With addition of 4% mass Co-OMt, 4% mass Co-OMt/IFR/PP nanocomposites have surpassed a UL-94 V-0 rating, with an LOI value as high as 32.1%. e use of MMT as a synergic additive to flame retardants for designing polymers with better flame-retardant properties has already been extensively studied [45,[153][154][155][156][157][158][159][160][161][162][163][164][165][166]. e effect of APP/zinc borate (ZB) for making highly efficient flame retardants and ceramics of ethylene-vinyl acetate/mica powder/organic modified montmorillonite (EVA/MP/OMMT) composites has been shown [166].…”

Efficient preparation of crack-free, low-density and transparent polymethylsilsesquioxane aerogels via ambient pressure drying and surface modification

“…Compression tests were conducted on a CMT 5105 universal materials testing machine under room conditions with a constant compression speed at 10% of the sample length per minute. 26 To assess the molecular-level structure of the obtained PMSQ aerogel, 29 Si MAS NMR experiments were performed on an Agilent 600 DD2 spectrometer at a resonance frequency of 119.13 MHz. 29 Si NMR spectra were recorded with spinning rate of 7 kHz with a 6 mm probe at room temperature.…”

“…26 To assess the molecular-level structure of the obtained PMSQ aerogel, 29 Si MAS NMR experiments were performed on an Agilent 600 DD2 spectrometer at a resonance frequency of 119.13 MHz. 29 Si NMR spectra were recorded with spinning rate of 7 kHz with a 6 mm probe at room temperature. 29 Si DDMAS experiments were performed with a delay time of 5 s. Chemical analysis on the surface elements were recorded on an X-ray photoelectron spectrometer (USA ThermoFischer, ESCALAB 250Xi).…”

“…29 Si NMR spectra were recorded with spinning rate of 7 kHz with a 6 mm probe at room temperature. 29 Si DDMAS experiments were performed with a delay time of 5 s. Chemical analysis on the surface elements were recorded on an X-ray photoelectron spectrometer (USA ThermoFischer, ESCALAB 250Xi). The background pressure during analysis was 8 Â l0 À10 Pa. An aluminum Ka ray (hn ¼ 1486.6 eV) was used as the X-ray radiation source.…”