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Fluorosilicone water-repellent and oil-repellent finishing emulsion preparation method

A water-repellent, oil-repellent, emulsion technology, applied in the direction of liquid-repellent fibers, fiber treatment, textiles and papermaking, etc., can solve the problems of damaging the air permeability and moisture permeability of fabrics, affecting the use effect of fabrics, etc., and improve the wrinkle resistance The effect of sex and oil repellency

Inactive Publication Date: 2019-07-12
雷洪云
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to use a waterproof and oil-repellent coating agent to coat and finish the fabric. The coating finishing agent forms a dense film on the surface of the fabric, which destroys the air permeability and moisture permeability of the fabric, and affects the fabric. To solve the problem of the use effect of fabrics, a preparation method of fluorosilicone water and oil repellent finishing emulsion is provided

Method used

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  • Fluorosilicone water-repellent and oil-repellent finishing emulsion preparation method

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Embodiment Construction

[0034]In terms of parts by weight, weigh 40~50 parts of N-propyl-N-hydroxyethylperfluoroethanesulfonamide, 1~3 parts of cuprous chloride, 1~3 parts of triethylamine, 20~30 parts Parts of chloroform, 5~10 parts of acryloyl chloride, 20~30 parts of deionized water, adding cuprous chloride, triethylamine, and chloroform to N-propyl-N-hydroxyethyl perfluoroethyl sulfonamide , stir at 150~200r / min for 20~30min at room temperature to obtain a green mixture, place the green mixture at 0~5°C and slowly add acryloyl chloride dropwise for 5~10min, then place at 120~140 Stir the reaction at 300~400r / min in an oil bath for 30~40min to obtain a reaction solution, add deionized water to the reaction solution, let stand for 12~16h to separate layers, take the lower layer of oily organic matter, and wash with saturated sodium chloride solution 2 to 4 times, and then dried with anhydrous magnesium sulfate to obtain N-propyl perfluorohexylsulfonamido ethyl acrylate, and then weighed 15 to 25 pa...

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Abstract

The invention belongs to the technical field of softening agents and relates to a fluorosilicone water-repellent and oil-repellent finishing emulsion preparation method. Dimethyl polysiloxane is adopted as a raw material for preparing fluorosilicone water-repellent and oil-repellent finishing emulsion, a main chain of siloxane is quite smooth and in a flexible spiral structure, a silicon-oxygen chain is a polar portion while organic groups connected with the rest two bonds of a silicon atom are non-polar portions, and under high temperature and catalyst actions, a silicon-oxygen main chain ispolarized, and the polar portion moves close to polar groups on fibers; the oxygen atom on the silicon-oxygen main chain can form a hydrogen bond with certain atoms on the fibers to fix an organic silicon compound on the fiber surface; during polar group positioning, methyl groups of the non-polar portions are forced to rotate directionally to be continuously and orderly arrayed on the outermost layer of the fibers, and the hydrophobic methyl groups makes the fiber hydrophobic, so that fabric surface properties are changed, and a water-repellent effect is achieved.

Description

technical field [0001] The invention relates to a method for preparing a fluorosilicon water- and oil-repellent finishing emulsion, which belongs to the technical field of softeners. Background technique [0002] The wetting of fabric refers to the rapid spread of water, oil and other liquids on the surface of the fabric. The difficulty of fabric wetting is mainly related to the structure of the fabric and the surface characteristics of the fiber. The water-repellent and oil-repellent finished fabric can make it difficult for water, oil and other liquids to spread on the surface of the fabric, making it roll on the surface of the fabric in a spherical shape. For fabrics to achieve water and oil repellency, the contact angle should be greater than 90°. The larger the contact angle, the better the water and oil repellency. [0003] In order to give the fabric a good waterproof and oil-proof effect, the fabric is usually coated with a waterproof and oil-proof coating agent. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/643D06M15/256D06M15/277D06M13/207C08F283/12
CPCC08F283/12D06M13/207D06M15/256D06M15/277D06M15/643D06M2200/01D06M2200/11D06M2200/12C08F214/26
Inventor 雷洪云
Owner 雷洪云
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