Textile fluoride-free waterproofing agent and preparation method thereof and textile

A fluorine-free water repellent, textile technology, applied in textiles and papermaking, fiber processing, liquid repellent fibers, etc., to achieve the effect of reducing the requirements of preparation equipment, good compatibility, and simplifying the synthesis process

Inactive Publication Date: 2016-03-02
WUXI CHANGAN SHUGUANG GLOVE FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the problem that the waterproofing agent for textiles in the prior art cannot achieve both excellent waterproofing and yellowing resistance, the present invention aims to provide a fluorine-free waterproofing agent for textiles, a manufacturing method thereof, and textiles using the fluorine-free waterproofing agent. The fluorine-free water repellent has better waterproof effect and anti-yellowing performance, and the preparation process is simpler

Method used

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  • Textile fluoride-free waterproofing agent and preparation method thereof and textile
  • Textile fluoride-free waterproofing agent and preparation method thereof and textile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Preparation of chemically modified chitosan:

[0053] Add 20g of chitosan, 60mL of dimethylformamide (DMF) and 20mL of pyridine to a 250mL round-bottomed flask and stir thoroughly, then add 40g of toluene diisocyanate, place the reaction bottle in an oil bath and heat to reflux. The reaction was carried out for 10 hours at a temperature of 85°C. After the reaction was completed, it was cooled to room temperature, washed and dried to obtain chemically modified chitosan. It can be seen that the mass ratio of modifier and chitosan is 2:1 in the present embodiment.

[0054] Prepare waterproofing agent:

[0055] Take 8g behenyl acrylate, 8g behenyl methacrylate, 2g styrene, 5g dipropylene glycol, 3g chemically modified chitosan, 1g glycidyl acrylate, 0.2g acetic acid, 30g (modified) polyethylene Wax emulsion (particle size 150nm), 42.6g of water, heating up to 85°C, high-speed emulsification for 60 minutes to obtain a pre-emulsion; and nitrogen gas for 30 minutes, while co...

Embodiment 2

[0058] Preparation of chemically modified chitosan:

[0059] Except that the mass ratio of modifier and chitosan is 0.05:1, other raw material consumption and method are the same as in Example 1.

[0060] Prepare waterproofing agent:

[0061] The preparation method and the control of parameters such as temperature and emulsification time during the preparation process are the same as in Example 1.

[0062] The addition amount of each component is as follows:

[0063] 2g behenyl acrylate, 2g behenyl methacrylate, 0.5g styrene, 1.25g dipropylene glycol, 15g chemically modified chitosan, 5g (modified) polyethylene wax emulsion (particle size 150nm), 0.25 g glycidyl acrylate, 0.05 g acetic acid, 73.6 g water, 0.1 g azobisisobutylamidine hydrochloride, 0.25 g vinyl chloride.

[0064] The performance test of the prepared fluorine-free waterproofing agent was carried out, and the test results are listed in Table 1.

Embodiment 3

[0066] Preparation of chemically modified chitosan:

[0067] Except that the mass ratio of modifier to chitosan is 1:1, the dosage and method of other raw materials are the same as in Example 1.

[0068] Prepare waterproofing agent:

[0069] The preparation method and the control of parameters such as temperature and emulsification time during the preparation process are the same as in Example 1.

[0070] The addition amount of each component is as follows:

[0071] 12g behenyl acrylate, 15g (modified) polyethylene wax emulsion (particle size 150nm), 12g behenyl methacrylate, 1.5g glycidyl acrylate, 0.3g acetic acid, 3g styrene, 7.5g dipropylene glycol , 10g chemically modified chitosan, 36.65g water, 1.5g vinyl chloride, 0.3g azobisisobutylamidine hydrochloride, 0.25g vinyl chloride.

[0072] The performance test of the prepared fluorine-free waterproofing agent was carried out, and the test results are listed in Table 1.

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Abstract

The invention provides a textile fluoride-free waterproofing agent and a preparation method thereof and textile applying the fluoride-free waterproofing agent. The fluoride-free waterproofing agent is prepared from the components by mass of 5%-30% of fluoride-free polymer, 5%-30% of (modified) polyethylene wax emulsion, 3%-15% of chemically modified chitosan, 0.001%-10% of auxiliary and the balance of water. Acid, acid anhydride or isocyanate materials are taken as modifiers for chemically modifying amino of the chitosan, functional groups such as carboxyl, ester and hydroxyl are introduced while the amino is reduced, the compatibility is good, contents and the matching relationship of all components in the fluoride-free waterproofing agent are adjusted so that the fluoride-free waterproofing agent has excellent waterproofness and yellow degeneration resistance, washing waterproofness can still be maintained to be level 5 after the fluoride-free waterproofing agent is used for washing the textile for 10 times, and the yellow degeneration resistance can also be as high as level 5.

Description

technical field [0001] The invention relates to the field of textile auxiliaries, in particular to a fluorine-free waterproofing agent for textiles, a preparation method and application thereof. Background technique [0002] With the improvement of production and living standards, people have higher and higher functional requirements for fabrics, and waterproof fabrics are one of them. Water repellants can impart hydrophobic properties to the surface of textiles. Fluorine-containing waterproofing agents are currently the most used on the market. Fluorine-containing water repellents are expensive, and the fluorine-containing raw materials used in the production consume high energy consumption and heavy pollution, and the fluorine-containing substances contained in them are difficult to degrade and have bioaccumulation toxicity. Therefore, more and more research focuses on the development of new fluorine-free waterproofing agents, and the use of fluorine-free additives is a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/263D06M15/273D06M15/227D06M15/03C08B37/08
CPCD06M15/263C08B37/003D06M15/03D06M15/227D06M15/233D06M15/248D06M15/273D06M2200/12
Inventor 缪建良
Owner WUXI CHANGAN SHUGUANG GLOVE FACTORY
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