Bio-based environment-friendly nano flame-retardant composite material as well as preparation method and application thereof
A nano flame retardant and composite material technology, applied in flame retardant fibers, textiles and papermaking, fiber processing and other directions, can solve the problems of easy combustion, large fire, no flame retardant performance, etc., and achieves simple preparation methods, raw materials Source-rich effects
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[0019] A preparation method of a bio-based environment-friendly nano flame-retardant composite material, comprising the following steps:
[0020] Step 1) Disperse triphosphazene grafted carbon nanotube powder in deionized water, add chitosan solution while stirring, stir at constant temperature for 20-30min, wash and filter, here, the configuration process of chitosan solution As follows: at room temperature, dissolving chitosan with a molecular weight of 100,000-300,000 in a glacial acetic acid solution with a mass concentration of 1-4%, and configuring it as a chitosan solution with a mass percentage concentration of 2-6%;
[0021] Step 2) Disperse the powder product obtained by filtering in step 1) in deionized water, add a phytic acid aqueous solution with a mass percentage concentration of 2-5% while stirring, and then continue to stir at a constant temperature for 15-20min, then wash and filter, and then pass through The flame retardant material is obtained after drying,...
Embodiment 1
[0028] Prepare a bio-based environment-friendly nano flame-retardant composite material A1, comprising the following steps:
[0029] Step 1) Disperse 10 g of triphosphazene-grafted carbon nanotube powder in 30 ml of deionized water, add 50 ml of chitosan solution while stirring, stir at a constant temperature of 25 ° C for 20-30 min, wash and filter, here, the shell The configuration process of the polysaccharide solution is as follows: at room temperature, dissolving chitosan with a molecular weight of 200,000 in a glacial acetic acid solution with a mass concentration of 2%, is configured into a chitosan solution with a concentration of 4% by mass and a pH of 5;
[0030] Step 2) Disperse the powder product obtained by filtering in step 1) in 15ml of deionized water, add 20ml of phytic acid aqueous solution with a pH value of 4 and a concentration of 5% by mass while stirring, then continue to stir at a constant temperature for 15-20min, and then wash , filtered, then dried, ...
Embodiment 2
[0040] Prepare a bio-based environment-friendly nano flame-retardant composite material A2, comprising the following steps:
[0041] Step 1) Disperse 10 g of triphosphazene-grafted carbon nanotube powder in 30 ml of deionized water, add 30 ml of chitosan solution while stirring, stir at a constant temperature of 25 ° C for 20-30 min, wash and filter, here, the shell The configuration process of the polysaccharide solution is as follows: at room temperature, dissolving chitosan with a molecular weight of 200,000 in a glacial acetic acid solution with a mass concentration of 3% is configured into a chitosan solution with a mass percentage concentration of 5% and a pH of 5.5;
[0042] Step 2) Disperse the powder product obtained by filtering in step 1) in 15ml of deionized water, add 25ml of phytic acid aqueous solution with a pH value of 4.5 and a mass percentage concentration of 4% while stirring, and then continue to stir at a constant temperature for 15-20min, and then wash ,...
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