Fluoride-free and water-repellent fabric and fluoride-free and water-repellent finishing method of fabric

A fluorine-free water-repellent and fabric technology, applied in fiber treatment, plant fiber, animal fiber, etc., can solve the problems of poor durability, fabrics that cannot have super-hydrophobicity, and poor water repellency

Active Publication Date: 2017-04-26
JIANGXI CHANGSHUO OUTDOOR LEISURE PRODS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The method of introducing low surface energy material components on the surface of the fabric to impart water repellency to the fabric has the disadvantage of poor durability. As the number of washings increases, the water repellency gradually deteriorates, and the method often cannot make the fabric superhydrophobic.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0032] Preparation of silica sol: It can be obtained by hydrolysis of silicate, such as using ethyl orthosilicate as a precursor, hydrolyzing it with hydrochloric acid or nitric acid as a catalyst; it can also be prepared by ion exchange, such as using silicic acid Sodium solution as the starting material, using cation exchange resin to remove sodium ions, and then alkalized and concentrated; or using silicon reaction method, that is, using silicon powder as a raw material, reacting with water under the catalysis of a certain amount of alkali have to. Silicate hydrolysis is preferred, more preferably tetraethyl orthosilicate as a precursor.

[0033] Preparation of titanium dioxide sol: titanate hydrolysis can be used. For example, use tetra-n-butyl titanate as the precursor, use ethanol as the solvent, and hydrolyze it with hydrochloric acid or nitric acid as the catalyst; or use water as the solvent and use acetic acid as the catalyst to make it hydrolyze; Titanium dioxide ...

Embodiment 1

[0040] a, solution A: the preparation of silica sol, in the present embodiment, measure 40mL of tetraethyl orthosilicate and 32mL of ethanol respectively, place it successively in the same 250mL round-bottomed flask; then measure the concentration of 1 mL of 37.2% hydrochloric acid and 15 mL of deionized water were mixed uniformly in a beaker and then poured into the above-mentioned round bottom flask. The mixture in the flask was heated to reflux for 90 minutes under magnetic stirring at 60 °C. After the reflux was completed, the temperature was lowered to room temperature to obtain solution A.

[0041] b. Preparation of solution B: disperse graphene oxide with a monolayer rate ≥ 99.5% and an average radial size of 5-8um in deionized water to obtain 8.8mL of a solution with a concentration of 0.33% by mass to obtain solution B.

[0042] c. Preparation of Composite Finishing Solution C: Mix Solution B and Solution A, and stir for 15 minutes under magnetic stirring to obtain C...

Embodiment 2

[0047] a. Solution A, preparation of silica sol: Measure 40 mL of tetraethyl orthosilicate and 32 mL of ethanol respectively, and place the latter in the same 250 mL round-bottomed flask; then measure hydrochloric acid with a concentration of 37.2% 1mL and 15mL of deionized water were mixed in a beaker and poured into the above-mentioned round bottom flask. The mixture in the flask was heated to reflux for 90 minutes under magnetic stirring at 60 °C. After the reflux was completed, the temperature was lowered to room temperature to obtain solution A.

[0048] b. Preparation of solution B: disperse graphene oxide (single-layer rate ≥ 99.5%, average radial size 20-30um) in deionized water to obtain 8.8 mL of a solution with a concentration of 0.20% by mass, namely solution B.

[0049] c. Preparation of Composite Finishing Solution C: Mix Solution B and Solution A and stir for 15 minutes under magnetic stirring to obtain Composite Finishing Solution C.

[0050]d. Preparation of...

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PUM

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Abstract

The invention provides fluoride-free and water-repellent fabric and a fluoride-free and water-repellent finishing method of the fabric and belongs to the technical field of after-finishing of textile products. The method comprises steps as follows: a sol solution A is prepared with a conventional method; graphene oxide with a single-layer structure is dispersed in water, and a solution B with the concentration of 0.1%-0.5% in percentage by mass is prepared; the solution B and the solution A in a volume ratio or a mass ratio being 1:10 are mixed, and a composite finishing solution is obtained; basic fabric is placed in the finishing solution C and is processed for 10-1000 min at the temperature in a range from room temperature to 90 DEG C, unnecessary solution is removed through rolling, and then the basic fabric is subjected to reduction treatment, washed with deionized water and prebaked for 3-30 min at the temperature of 50-90 DEG C; the basic fabric is post-baked for 10-100 min at the temperature of 95-130 DEG C. Based on the technological steps of the invention, the fluoride-free and water-repellent fabric with a surface contact angle being 110-152 degrees can be obtained.

Description

[0001] Technical field: [0002] The invention relates to a fluorine-free water-repellent fabric and a fluorine-free water-repellent finishing method for the fabric, belonging to the technical field of textile post-finishing. [0003] Background technique: [0004] Water-repellent and waterproof fabrics are widely used in human production and life. Water-repellent finishing of fabrics is an important way to obtain waterproof fabrics. Since the 1950s, the waterproof and water-repellent finishing agents used in industrial production are mainly fluorine-containing compounds. Since fluorine-containing compounds will have harmful effects on the human body and the environment during their production and use, people began to research and develop fluorine-free fabric waterproof and water-repellent finishing agents. A variety of fluorine-free compounds are used for water-repellent finishing of fabrics. For example, cotton and polyester-cotton fabrics are finished with pyridinium quate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/79D06M11/46D06M11/45D06M11/44D06M11/74D06M101/06D06M101/12D06M101/32D06M101/34
CPCD06M11/44D06M11/45D06M11/46D06M11/74D06M11/79D06M2101/06D06M2101/12D06M2101/32D06M2101/34D06M2200/12
Inventor 江红徐柏青贺昌城田俊莹董猛
Owner JIANGXI CHANGSHUO OUTDOOR LEISURE PRODS
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