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Flame retardant, heat insulation organic fiber fabrics have a wide range of applications in the aerospace, high temperature filtration, protective clothing and other aspects. The method of after-treatment of the organic fiber fabric Traditionally, usually conferred its flame-retardant, heat insulation performance, but a conventional organic flame retardant materials containing halogen, phosphorus, nitrogen and other elements, the high temperatures encountered in the presence of the release of toxic gases. In recent years, the rapid development of the inorganic flame retardant magnesium hydroxide. Especially particular crystal morphology of the magnesium hydroxide has an efficient flame retardant, high temperature does not produce toxic or corrosive smoke, gas, and is often used as flame-retardant filler used in the polymer composite material, but in the textile application has not been reported. Flaky crystalline magnesium hydroxide uniformly arranged in the base surface can be reflected by the high efficiency of heat, the surface cooling effect of the release of water after the heat decomposition of the magnesium hydroxide can be generated, and to generate the magnesium oxide is excellent refractories, in the heated when you play a very important shielding effect. Our group in cotton fabric surface culture of magnesium hydroxide flake crystals, the financial high reflectivity, low absorption, fire protection, thermal insulation and other functions in one of the protective layer can be formed in cotton fabric surface to improve the heat resistance of cotton fabrics, every thermal performance and the performance of the ordinary cotton fabric. According to the above ideas, the present study was prepared on the basis of the sheet-like magnesium hydroxide seed crystal, its plant species in the surface of the modified cotton fabric; system and adsorption properties of the modified cotton fabric on the seed crystal of the magnesium hydroxide; pairs secondary growth of magnesium hydroxide seed exploratory study. Content and results of the research are as follows: (1) test method, ammonia and magnesium chloride as raw materials, relies on laser particle size analyzer, X-ray diffraction analyzer (XRD), transmission electron microscopy (TEM) analysis discussed in a very dilute solution magnesium hydroxide was prepared in the seed crystal, the amount of reactants, pH, and dispersant dosage and factors such as the crystal structure of the prepared seed crystal of magnesium hydroxide, morphology and particle size of impact, and finally the obtained particle size of about 4.5 nm in laminar structure of the magnesium hydroxide seed crystals. (2) This article discusses a cotton fabric with different content of active groups on the adsorption kinetics of magnesium hydroxide seed and adsorption equilibrium. When active groups on the cotton fabric content higher than 0.4414mmol / g, with quasi-second-order kinetic equation to describe the adsorption kinetics of cotton fabric magnesium hydroxide seed, the adsorption behavior of the Langmuir model for single layer adsorption. (3) a seed crystal of magnesium hydroxide was prepared, and adsorbed on the surface of the modified cotton fabric after, the article attempts secondary growth of the magnesium hydroxide crystals take the following process: with the seed crystal cotton fabric into 0.15 mol / L MgCl 2 solution, the temperature is 35 ℃, 1 mol / L ammonia to a speed of 15 ml / h and 12 h after the end of the addition of ammonia, the thermostat aged for 30 days, the final magnesium hydroxide crystal growth and basic covered with cotton fiber surface, but the presence of crystal agglomeration, and hope that in future research to be able to be resolved.
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