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

Pending Publication Date: 2020-08-07
安徽省农业科学院棉花研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, rough structures are generally added to the surface of cotton fibers, but the stability is poor during use, and the attachments modified on the surface of cotton fibers are easy to fall off and slag, which needs to be solved urgently.

Method used

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  • Preparation method of nanocrystallized cotton fiber super-hydrophobic composite material
  • Preparation method of nanocrystallized cotton fiber super-hydrophobic composite material

Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

The invention discloses a preparation method of a nanocrystallized cotton fiber super-hydrophobic composite material. The preparation method comprises the following steps that 1, alkali washing, primary ball milling, acid washing, secondary ball milling, washing, drying and crushing are carried out on cotton linters to obtain a nanocrystallized cotton fiber; 2, the nanocrystallized cotton fiber isfed into a sodium hydroxide solution, epichlorohydrin is added in the stirring state, and the temperature is adjusted to 65 DEG C-75 DEG C, stirring is carried out for 2-3 h, and filtering, washing and drying are performed to obtain an epoxidized nano-cotton fiber; 3, aminated beta-cyclodextrin and starch-based carbon microspheres are mixed, and wet ball milling, drying and crushing are performedto obtain a starch-based carbon microsphere-cyclodextrin compound; and 4, the starch-based carbon microsphere cyclodextrin compound is dispersed in water, the epoxidized nano-cotton fiber is added under the stirring state and stirred for 10-20 h at the temperature of 70 DEG C-80 DEG C, and filtering, washing and drying to obtain the nanocrystallized cotton fiber super-hydrophobic composite material.

Description

technical field [0001] The invention relates to the technical field of cotton fiber modification, in particular to a nanometerized cotton fiber superhydrophobic composite material and a preparation method thereof. Background technique [0002] Cellulose is the most abundant natural polymer in nature, which can be regenerated rapidly and can be said to be inexhaustible. Moreover, cellulose also has many advantages such as easy degradation, no pollution, and easy modification. So far, cellulose and its derivatives have been widely used in the fields of plastics, textiles, papermaking, food, daily chemicals, medicine, construction and biology, and may become one of the main raw materials of chemistry and chemical industry. The development of cellulose materials will be of great significance to improving the ecological environment, changing the human diet structure, increasing energy, and developing new materials. [0003] At present, clothing with good waterproof and breathab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/03D06M11/74D06M13/11D06M11/38D06M11/55D06M101/06
CPCD06M15/03D06M11/74D06M13/11D06M11/38D06M11/55D06M2101/06D06M2200/12
Inventor 邓小楠叶泗洪李常凤白雪刘方志
Owner 安徽省农业科学院棉花研究所
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