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Method for preparing water-oil repellent fluorine-containing textile finishing agent

A fluorine-containing fabric, water-repellent and oil-repellent technology, applied in fiber treatment, textiles and papermaking, etc., can solve the problems of high cost, harsh operation, unfavorable development, etc., and achieve low cost, good mechanical stability, good water and repellency The effect of oil properties

Active Publication Date: 2011-05-18
JUHUA GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0030] 1) High cost;
[0031] 2) The operation is harsh;
[0032] 3) The use of toxic and harmful solvents such as toluene is not conducive to its development in fabric applications

Method used

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  • Method for preparing water-oil repellent fluorine-containing textile finishing agent
  • Method for preparing water-oil repellent fluorine-containing textile finishing agent
  • Method for preparing water-oil repellent fluorine-containing textile finishing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] 100g perfluorononenyloxyethyl acrylate, 80g hexadecyl acrylate, 20g N-methylolacrylamide, 5g polyoxyethylene laurate (9), 5g octadecyltrimethylammonium chloride, 40g Acetone and 0.6g of dodecyl mercaptan were added to a 1000ml four-neck flask, heated at 30°C to melt, and 400ml of water was continuously added dropwise under high shear conditions for pre-emulsification, and 1g of potassium persulfate was added to the pre-emulsion after ultrasound , Polymerized at 50°C for 0.5h. Water repellency 70 points, oil repellency 2 grades.

Embodiment 2

[0061] 90g perfluorononenyloxyethyl methacrylate, 100g octadecyl methacrylate, 10g N-methylolacrylamide, 15g polyoxyethylene laurate (9), 15g hexadecyl trimethyl bromide Ammonium chloride, 100g of isopropanol, and 1.4g of dodecyl mercaptan were added to a 1000ml four-neck flask, heated at 60°C to melt, and 600ml of water was continuously added dropwise under high shear conditions for pre-emulsification. The pre-emulsion was ultrasonically Afterwards, 1.5 g of benzoyl peroxide was added, and polymerized at 70° C. for 1 h. 80 points for water repellency and 3 grades for oil repellency.

Embodiment 3

[0063] 80g perfluorononenylamine ethyl methacrylate, 100g hexadecyl acrylate, 20g gamma-mercaptopropyltrimethoxysilane, 10g polyoxyethylene laurate (9), 20g dodecyl trimethyl bromide Add ammonium chloride, 30g acetone, 30g isopropanol, and 1.4g dodecyl mercaptan into a 1000ml four-neck flask, heat it at 80°C to melt it, and add 800ml water continuously under high shear conditions for pre-emulsification. After ultrasonication, 1.6 g of azobisisobutylamidine dihydrochloride was added to the emulsion, and polymerized at 60° C. for 5 hours. 80 points for water repellency and 2 grades for oil repellency.

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Abstract

The invention discloses a method for preparing a water-oil repellent fluorine-containing textile finishing agent, comprising the following steps of: adding a fluorine-containing alkyl (methyl) acrylate monomer, a higher fatty alcohol (methyl) acrylate monomer, a cross-linking monomer, an emulsifying agent, a solvent, a chain transfer agent and the like into a container in sequence, dropwise adding deionized water at 30-80 DEG C, shearing at high speed for pre-emulsification, carrying out high-pressure homogenization or ultrasound on a pre-emulsified solution, adding an initiator, and polymerizing for 0.5-8h at 50-80 DEG C. The obtained finishing agent has small particle size, uniform polymer composition and favorable properties of mechanical stability, pH stability, chemical stability, dilution stability and storage stability, and contains no components such as PFOS / PFOA (Perfluorooctane Sulfonates / Perfluorooctanoic Acid) and the like harmful to human bodies, and textiles finished with the finishing agent have favorable water-oil repellent property and has lower cost in comparison with like products.

Description

technical field [0001] The present invention relates to the technical field of materials and chemicals, in particular to a method for preparing a water- and oil-repellent fluorine-containing fabric finishing agent. The fabric finishing agent is composed of fluorine-containing alkyl (meth)acrylate monomer, higher fatty alcohol (methyl ) acrylate monomers and crosslinking monomers are obtained by emulsion polymerization in the presence of emulsifiers, solvents, chain transfer agents and initiators. Background technique [0002] Fluorochemicals have many excellent properties, such as excellent surface properties, high temperature stability, chemical stability, aging resistance, water and oil repellency, etc. Foreign countries began to study fluorine-containing fabric finishing agents in the 1930s. 3M first synthesized low-molecular-weight chlorotrifluoroethylene, and then DuPont invented high-molecular-weight polytetrafluoroethylene in 1938. In 1950, DuPont published the pate...

Claims

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Application Information

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IPC IPC(8): C08F220/40C08F220/18C08F220/58C08F220/28C08F214/08C08F230/08C08F2/30C08F2/28D06M15/33D06M15/356
Inventor 耿为利孔丽苹王树华周强
Owner JUHUA GRP
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