A kind of preparation method of superhydrophobic flame-retardant material
A flame-retardant material and super-hydrophobic technology, applied in flame-retardant fibers, liquid-repellent fibers, plant fibers, etc., can solve the problems of high cost, difficult to use on a large scale, hindering super-hydrophobic materials, etc. The effect of widening, increasing viscosity and reducing cost
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Embodiment 1
[0039] Add 0.01 parts of single-walled carbon nanotubes, 0.1 parts of Vitex bark tannins and 0.03 parts of ferric chloride hexahydrate solution to a solution consisting of 49.86 parts of absolute ethanol and 50 parts of deionized water, and undergo ultrasonic treatment Disperse and dissolve, and adjust the pH of the mixed solution to 7; rinse and dry the melamine foam of 10.0cm×10.0cm×2.0cm with deionized water and absolute ethanol in sequence, then soak it in the mixed solution for 5min, Melamine foam (SWCNTs / MA-Foam) loaded with single-walled carbon nanotubes can be obtained by drying; first dissolve 0.1 parts of PDMS in 99.9 parts of isopropanol, and then soak SWCNTs / MA-Foam in PDMS solution for 30min , taken out and dried to obtain a superhydrophobic flame-retardant melamine foam material (PDMS / SWCNTs / MA-Foam).
[0040] The contact angle of the obtained PDMS / SWCNTs / MA-Foam is 157.5°; its limiting oxygen index is 34.4%.
Embodiment 2
[0042] Add 0.1 parts of activated carbon powder, 3.8 parts of bayberry tannin and 1.9 parts of titanium tetrachloride solution into a solution composed of 47.1 parts of absolute ethanol and 47.1 parts of deionized water, disperse and dissolve through ultrasonic treatment, and adjust The pH of the mixed solution is 3; the polyurethane foam of 10.0cm×10.0cm×2.0cm is rinsed with deionized water and absolute ethanol in sequence and dried, then soaked in the mixed solution for 8 minutes, and dried to obtain Polyurethane foam (PAC / PU-Foam) loaded with activated carbon powder; first dissolve 0.95 parts of VTEO in 99.05 parts of toluene solution, then soak PAC / PU-Foam in VTEO solution for 20h, take it out and dry it, that is Superhydrophobic flame retardant polyurethane foams (VTEO / PAC / PU-Foam) are available.
[0043] The contact angle of the obtained VTEO / PAC / PU-Foam is 156.5°; its limiting oxygen index is 20.1%.
Embodiment 3
[0045] Add 0.05 parts of graphene, 5.0 parts of tara tannin and 1.7 parts of titanium sulfate into a solution composed of 46.6 parts of absolute ethanol and 46.65 parts of deionized water, disperse and dissolve through ultrasonic treatment, and adjust the mixed solution. pH to 5; the melamine foam of 10.0cm×10.0cm×2.0cm is rinsed with deionized water and absolute ethanol successively and dried, then soaked in the mixed solution for 5min, and then dried to obtain graphene-loaded Melamine foam (Gr / MA-Foam); first dissolve 0.2 parts of DT in 99.8 parts of absolute ethanol solution, then soak Gr / MA-Foam in the DT solution for 20 hours, take it out and dry it to obtain superhydrophobic resistance Flame melamine foam (DT / Gr / MA-Foam).
[0046] The contact angle of the obtained DT / Gr / MA-Foam is 155°; its limiting oxygen index is 35.5%.
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