Preparation method of water repellent finishing agent

A technology of water-repellent finishing and ammonia water, which is applied in the fields of fiber treatment, textiles and papermaking, and can solve the problems of human poisoning, high cost of fluorine-containing treatment liquid, and non-pollution prevention

Inactive Publication Date: 2014-04-16
WUXI SHUNYE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The first five types of water repellents have common weaknesses: no oil repellency, no antifouling, poor washability
In recent years, the application of fluorine-containing compounds such as fluorine-containing polyacrylates in the water-repellent, oil-repellent, and anti-fouling finishing of fabrics is developing, but the fluorine-containing treatment liquid is not only costly, but also toxic to the human body.

Method used

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  • Preparation method of water repellent finishing agent
  • Preparation method of water repellent finishing agent
  • Preparation method of water repellent finishing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Add 8 mL of 26% ammonia water to 90 g of ethanol. After stirring for ten minutes, add 7 mL of analytically pure ethyl orthosilicate at a time for 3 hours to prepare a blue transparent nano silica sol. Adjust the pH of the nano silica sol to 6 with citric acid.

[0018] The above-mentioned nano-silica sol and fluorine-containing polyacrylate are compounded according to a mass ratio of 1:80. Finish the 30g / L compound finishing agent on the cotton fabric, and the liquid rate of the cotton fabric is 65%. The process of fabric finishing is: padding (two soaking and two rolling)→drying (100℃×2min)→baking (150℃×3min). The measured contact angle of the finished fabric is 143.35°, such as figure 2 Shown. Compared with the comparative example, under the condition that the various parameters of the experiment are the same, the water repellency of the fabric finished with the nano silica sol is improved, and at the same time, the amount of fluorinated polyacrylate is reduced. .

Embodiment 2

[0020] Add 10 mL of 27% ammonia water to 100 g of ethanol, stir for ten minutes, add 8 mL of analytically pure ethyl orthosilicate at a time, and react for 4 hours to prepare a blue transparent nano silica sol. Adjust the pH of the nano silica sol to 5 with citric acid.

[0021] The above-mentioned nano-silica sol and fluorine-containing polyacrylate are compounded according to a mass ratio of 1:40. Finish the compound finishing agent on the cotton fabric, the liquid rate of the cotton fabric is 65%. The process of fabric finishing is: padding (two soaking and two rolling)→drying (100℃×2min)→baking (150℃×3min). The measured contact angle of the finished fabric is 150.77°, such as image 3 Shown.

Embodiment 3

[0023] 12 mL of 28% ammonia water was added to 110 g of ethanol, and after stirring for ten minutes, 9 mL of analytically pure ethyl orthosilicate was added at one time to react for 5 hours to prepare a blue transparent nano silica sol. Adjust the pH of the nano silica sol to 6 with citric acid.

[0024] The above-mentioned nano-silica sol and fluorine-containing polyacrylate are compounded according to a mass ratio of 3:80. After finishing the compound finishing agent on the fabric, the liquid-carrying rate of the cotton fabric is 65%. The process of fabric finishing is: padding (two soaking and two rolling)→drying (100℃×2min)→baking (150℃×3min). The measured contact angle of the finished fabric is 150.64°, such as Figure 4 Shown.

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Abstract

The invention discloses a preparation method of a water repellent finishing agent, which comprises the following steps: adding ethanol in ammoniacal liquor for stirring, adding tetraethyl orthosilicate for reacting for a while to prepare transparent blue silica sol, adjusting the pH value of the nano silica sol by citric acid, and dissolving the nano silica sol and fluorine-containing acrylic acid ester according to certain mass ratio in water to prepare the finishing agent. According to the invention, the price of a fluorine-containing polymer is expensive, some fluorine-containing polymer contains pollutant of PFOS and PFOA, so that the application is limited, the silica sol is added in the fluorine-containing polyacrylate, water and oil repellent performance of the water repellent finishing agent is increased, and the usage of the fluorine-containing polymer can be reduced.

Description

Technical field [0001] The invention belongs to the field of fabric finishing assistants, and more specifically relates to a preparation method of a textile super water-repellent finishing agent. Background technique [0002] The main water repellents produced and used at home and abroad are as follows: (1) paraffin-aluminum soaps, (2) quaternary pyridinium salts, (3) methylol melamine derivatives, (4) chromium stearate Complex, (5) silicone type, (6) fluoroalkyl resin. The first five types of water repellents have common weaknesses: no oil repellency, no stain resistance, and poor washing resistance. In recent years, the application of fluorine-containing compounds such as fluorine-containing polyacrylates in the water-repellent, oil-repellent, and anti-fouling finishing surface of fabrics is under development, but the fluorine-containing treatment solution is not only costly, but also toxic to the human body. Summary of the invention [0003] The invention provides a method fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/227D06M11/79
Inventor 杨得全马芳
Owner WUXI SHUNYE TECH
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