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CN-120443466-B - Water-repellent and oil-repellent fabric and preparation method thereof

CN120443466BCN 120443466 BCN120443466 BCN 120443466BCN-120443466-B

Abstract

The invention discloses a water-repellent and oil-repellent fabric and a preparation method thereof, and belongs to the technical field of fabric finishing. The preparation method of the water-repellent and oil-repellent fabric comprises the following steps of taking fabric blank cloth for dipping pretreatment, washing with hot water, warm water and cold water, airing, dipping the pretreated fabric blank cloth in finishing liquid, soaking for two times, pre-baking, washing and drying to obtain the water-repellent and oil-repellent fabric, wherein the finishing liquid comprises finishing agents, short-chain fluoro-acrylate polymers mainly prepared from bilateral symmetrical fluoro-acrylate monomers, octadecyl acrylate, butyl acrylate, methyl methacrylate, 2-hydroxyethyl acrylate and 5-hydroxypentylacrylate, finishing aids, and a mixed liquid of starch grafted carbon nano tubes, tetrabutylammonium hydroxide, deionized water, glycerol, calcium chloride, hydrochloric acid solution and epichlorohydrin, and the water-repellent and oil-repellent effects of the fabric are enhanced by preparing the finishing liquid to treat the surface of the fabric.

Inventors

  • Dai Ruiheng
  • JIANG LIYI

Assignees

  • 东莞光晖针织有限公司

Dates

Publication Date
20260512
Application Date
20250509

Claims (7)

  1. 1. The preparation method of the water-repellent and oil-repellent fabric is characterized by comprising the following steps of: s1, soaking fabric embryo cloth in pretreatment liquid, taking out, sequentially washing with hot water, warm water and cold water, and airing; S2, soaking the pretreated fabric embryo cloth in finishing liquid, soaking twice, pre-drying, baking, washing and drying to obtain the water-repellent and oil-repellent fabric; The finishing liquid comprises: The finishing agent is a short-chain fluoro-acrylate polymer prepared by mainly taking bilateral symmetry fluoro-acrylate monomers, octadecyl acrylate, butyl acrylate, methyl methacrylate, 2-hydroxyethyl acrylate and 5-hydroxypentyl acrylate as raw materials; finishing auxiliary agents, including starch grafted carbon nanotubes, tetrabutylammonium hydroxide, deionized water, glycerol, calcium chloride, hydrochloric acid solution and mixed solution of epichlorohydrin; The mass ratio of the finishing agent to the finishing auxiliary agent is 32-44:3.4-5.2; The proportioning ratio of the starch grafted carbon nano tube, tetrabutyl ammonium hydroxide, deionized water, glycerol, calcium chloride, hydrochloric acid solution and epichlorohydrin is 6-8g:0.8-1.2g:50mL:3-4mL:0.8-1.2g:80-100mL:2-3mL; The mass ratio of the bilateral symmetry fluoro acrylic ester monomer to the acrylic acid octadecyl ester to the acrylic acid butyl ester to the methacrylic acid methyl ester to the acrylic acid-2-hydroxy ethyl ester to the 5-hydroxy amyl acrylic ester is 5.8-6.2:3-4:2-3:2-3:0.8-1.2:0.6-0.8.
  2. 2. The method for preparing a water-repellent and oil-repellent fabric according to claim 1, wherein the method for preparing the bilaterally symmetrical fluoro-acrylate monomer comprises the following steps: A1, mixing 1H, 5H-octafluoropentan-1-ol, sodium hydroxide, tetrabutylammonium bromide and toluene, adding epichlorohydrin, stirring, heating and stirring, and separating to obtain a colorless transparent liquid reaction material; A2, in a nitrogen atmosphere, mixing the reaction materials, triethylamine and tetrahydrofuran, stirring, adding acryloyl chloride into an ice water bath, stirring at room temperature, and purifying to obtain the bilateral symmetry fluoro-acrylate monomer.
  3. 3. The method for preparing the water-repellent and oil-repellent fabric according to claim 2, wherein in the step A1, the dosage ratio of the 1H, 5H-octafluoropentan-1-ol, sodium hydroxide, tetrabutylammonium bromide, toluene and epichlorohydrin is 26-28g:5.5-5.8g:0.12-0.15g:150mL:11-13g.
  4. 4. The method for preparing the water-repellent and oil-repellent fabric according to claim 2, wherein in the step A2, the dosage ratio of the reactant materials, triethylamine, tetrahydrofuran and acryloyl chloride is 14-15g:3.2-3.5g:50mL:3-3.2g.
  5. 5. The method for producing a water-and oil-repellent fabric according to claim 1, wherein in step S2, the baking is performed at 150 to 180 ℃ for 3 to 5 minutes.
  6. 6. The method for producing a water-repellent, oil-repellent fabric according to claim 1, wherein in step S2, the pre-baking means pre-baking at 75 ℃ for 1-2min.
  7. 7. A water-repellent, oil-repellent fabric produced by the production method according to any one of claims 1 to 6.

Description

Water-repellent and oil-repellent fabric and preparation method thereof Technical Field The invention relates to the technical field of fabric finishing, in particular to a water-repellent and oil-repellent fabric and a preparation method thereof. Background In the present day, the demand for functional textiles has far exceeded the traditional pursuit of basic properties such as softness, comfort, moisture absorption and breathability. The consumers and industry are now more concerned about the antibacterial and hygienic properties, the water-proof, oil-proof and dirt-proof capabilities, the non-ironing and crease-resistant effects, the radiation-proof and ultraviolet-proof functions, the flame-retardant properties, the medical protection and other advanced functions of textiles. With the continued development and application of new fibrous materials, as well as the continued innovation of new processes and new technologies, these diverse demands are being gradually realized and satisfied. Functional finishing technology, a key technology in textile processing, is being strongly driven by the growing demands of high technology and high added value. Particularly, the three-proofing finishing technology, namely the multifunctional finishing technology of water repellency, oil repellency, stain resistance and the like, has become an important development direction in the field of textile after-finishing. The three-proofing finishing agent is a textile finishing agent specially used for textile fabrics such as cotton, wool, silk, chemical fiber, blend fiber and the like, and the textile finishing agent can endow the textile fabrics with strong water-repellent and oil-repellent capabilities by changing the surface properties of the textile fabrics, so that the wetting or contamination of water, common greasy dirt and stains can be effectively prevented. Although the fiber products subjected to water and oil repellency treatment in the current market have higher water repellency and oil repellency in the initial stage, the oil repellency and water repellency of the fiber products are often reduced after multiple water washing and friction, which is a technical problem to be solved in the current functional textile field. Disclosure of Invention The invention aims to provide a water-repellent and oil-repellent fabric and a preparation method thereof, which are used for solving the problems that the durability of the water-repellent and oil-repellent performance of the fabric is poor, and the water-repellent and oil-repellent performance of the fabric is easy to be reduced after washing friction. The aim of the invention can be achieved by the following technical scheme: The preparation method of the water-repellent and oil-repellent fabric comprises the following steps: s1, soaking fabric embryo cloth in pretreatment liquid, taking out, sequentially washing with hot water, warm water and cold water, and airing; S2, soaking the pretreated fabric embryo cloth in finishing liquid, soaking twice, pre-drying, baking, washing and drying to obtain the water-repellent and oil-repellent fabric; The finishing liquid comprises: The finishing agent is a short-chain fluoro-acrylate polymer prepared by mainly taking bilateral symmetry fluoro-acrylate monomers, octadecyl acrylate, butyl acrylate, methyl methacrylate, 2-hydroxyethyl acrylate and 5-hydroxypentyl acrylate as raw materials; the finishing auxiliary agent comprises a mixed solution of starch grafted carbon nano tubes, tetrabutylammonium hydroxide, deionized water, glycerol, calcium chloride, hydrochloric acid solution and epichlorohydrin. As a further scheme of the invention, the mass ratio of the finishing agent to the finishing auxiliary agent is 32-44:3.4-5.2. As a further scheme of the invention, the preparation method of the bilaterally symmetrical fluoro-acrylate monomer comprises the following steps: A1, mixing 1H, 5H-octafluoropentan-1-ol, sodium hydroxide, tetrabutylammonium bromide and toluene, adding epichlorohydrin, stirring, heating and stirring, and separating to obtain a colorless transparent liquid reaction material; A2, in a nitrogen atmosphere, mixing the reaction materials, triethylamine and tetrahydrofuran, stirring, adding acryloyl chloride into an ice water bath, stirring at room temperature, and purifying to obtain the bilateral symmetry fluoro-acrylate monomer. As a further scheme of the invention, in the step A1, the dosage ratio of the 1H, 5H-octafluoropentan-1-ol, sodium hydroxide, tetrabutylammonium bromide, toluene and epichlorohydrin is 26-28g:5.5-5.8g:0.12-0.15g:150mL:11-13g. As a further scheme of the invention, in the step A2, the dosage ratio of the reaction materials, triethylamine, tetrahydrofuran and acryloyl chloride is 14-15g, 3.2-3.5g, 50mL and 3-3.2g. As a further scheme of the invention, the proportioning ratio of the starch grafted carbon nano tube, tetrabutylammonium hydroxide, deionized water, glycerol, calcium chloride, h