Preparation method of nanocrystallized cotton fiber super-hydrophobic composite material
A composite material and cotton fiber technology, applied in the direction of plant fiber, fiber treatment, liquid repellent fiber, etc., can solve the problems of poor stability, easy to fall off attachments and slag, etc., to achieve good stability, strong reactivity, cost reduction effect
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Embodiment 1
[0030] A preparation method of nano cotton fiber superhydrophobic composite material, comprising the steps of:
[0031] S1. Add 10kg of cotton linters into 30kg of 0.8mol / L sodium hydroxide solution, seal and let it stand for 4 hours, then put it into a zirconia ball mill tank, and ball mill it at a speed of 500r / min for 2 hours. During the ball milling process, keep the temperature ≤ 40°C , filtered, and washed with water, the filter residue was neutral;
[0032] Add 20 kg of sulfuric acid solution with a concentration of 0.8 mol / L to the product, then send it into a zirconia ball mill tank, and ball mill it at a speed of 50 r / min for 40 minutes. The temperature of the ball milling process is 80 ° C. The product is washed with absolute ethanol and dried. Pulverize to obtain nano cotton fiber;
[0033] S2. Send 20kg of nano-sized cotton fibers into 50kg of sodium hydroxide solution with a concentration of 0.6mol / L, add 5kg of epichlorohydrin under stirring, stir at 75°C for 2...
Embodiment 2
[0039] A preparation method of nano cotton fiber superhydrophobic composite material, comprising the steps of:
[0040] S1. Add 15kg of cotton linters into 20kg of 1.2mol / L sodium hydroxide solution, seal and let it stand for 2 hours, then put it into a zirconia ball mill tank, and ball mill it at a speed of 800r / min for 1 hour. During the ball milling process, keep the temperature ≤ 40°C , filtered, and washed with water, the filter residue was neutral;
[0041] Add 30 kg of sulfuric acid solution with a concentration of 0.4 mol / L to the product, then send it into a zirconia ball mill tank, and ball mill it at a speed of 100 r / min for 20 minutes. The temperature of the ball milling process is 90 ° C. The product is washed with absolute ethanol and dried. Pulverize to obtain nano cotton fiber;
[0042] S2. Put 10kg of nano-sized cotton fibers into 100kg of sodium hydroxide solution with a concentration of 0.2mol / L, add 12kg of epichlorohydrin under stirring, stir at 65°C for ...
Embodiment 3
[0048] A preparation method of nano cotton fiber superhydrophobic composite material, comprising the steps of:
[0049] S1. Add 12kg of cotton linters into 28kg of 0.9mol / L sodium hydroxide solution, seal and let it stand for 3.5 hours, then put it into a zirconia ball mill tank, and ball mill it at a speed of 600r / min for 1.7 hours. During the ball milling process, keep the temperature ≤ Filter at 40°C, wash the filter residue with water and it is neutral;
[0050] Add 22 kg of sulfuric acid solution with a concentration of 0.7 mol / L to the product, then send it into a zirconia ball mill tank, and ball mill it at a speed of 60 r / min for 35 minutes. The temperature of the ball milling process is 82 ° C. The product is washed with absolute ethanol and dried. Pulverize to obtain nano cotton fiber;
[0051] S2. Send 17kg of nano-sized cotton fibers into 60kg of sodium hydroxide solution with a concentration of 0.5mol / L, add 6kg of epichlorohydrin under stirring, stir at 72°C for...
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