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Modified non-woven fabric as well as preparation method and use method thereof

A non-woven and modified technology, applied in chemical instruments and methods, textiles and papermaking, dyeing methods, etc., can solve the problems of small dye adsorption, unsatisfactory application effect, and high equipment requirements

Active Publication Date: 2017-05-31
SHANGHAI ARGUS NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

First of all, in order to solve the problems of high temperature, multiple washings and residual liquid chromaticity in soaping, new soaping agents have been widely studied, such as Zhang Jian ("Application of Soaping Enzyme A in Reactive Dyes", Printing and Dyeing, 2008, No.7) Use soaping enzyme A to remove the floating color on the surface of the fabric at 50-60°C, but it is selective to the dye; )) compound maleic anhydride-acrylic acid-vinylpyrrolidone and carboxyethyl thiosuccinic acid to obtain an acidic soaping agent, which can save neutralization and washing, but the cost of pyrrolidone is high; Yao Yongli ("Bentonite Modification and Its Application in Application of Cotton Reactive Dyes in Dyeing and Cleaning", Printing and Dyeing Auxiliaries, 2006, 23(3)) Using natural calcium-based bentonite as raw material, it is modified under strong acid and high temperature conditions to obtain low-temperature soaping agent, but it requires high equipment
Although the above has a certain effect, it can only solve a certain aspect of the problem, and it will also bring new problems
Secondly, in order to solve the problem of wastewater chromaticity, in addition to traditional biological, physical and chemical methods, Song Huan ("Ultraviolet irradiation quaternary ammonium salt monomer graft modified polypropylene nonwoven fabric and its adsorption" Polymer Materials Science and Engineering , 2013,42(3)), Li Rong ("Preparation method of non-woven fabric for adsorption and decolorization of anionic dye wastewater", CN 101791580 A) through ultraviolet light irradiation or padding and spraying method to modify non-woven fabric cations for Decolorization of anionic dye wastewater, but the modified non-woven fabrics prepared by these two methods have low reactivity, large dosage, and small adsorption of dyes, so the actual application effect is not ideal

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Modified non-woven fabric as well as preparation method and use method thereof
  • Modified non-woven fabric as well as preparation method and use method thereof
  • Modified non-woven fabric as well as preparation method and use method thereof

Examples

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preparation example Construction

[0034] In a preferred embodiment, the preparation method of modified nonwoven fabric of the present invention comprises the following steps:

[0035] a) preparing a water treatment solution containing an ionic liquid, a reactive cationic modifier and a strong inorganic base;

[0036] b) impregnating the non-woven fabric in the water treatment solution; and

[0037] c) drying or drying at 60-90°C.

[0038]In a preferred embodiment, the water treatment liquid used in the method of the present invention contains 1-5 g / L ionic liquid, 3-15 g / L reactive cationic modifier and 1-10 g / L inorganic strong base, preferably It contains 2-5 g / l ionic liquid, 5-15 g / l reactive cationic modifier and 3-10 g / l sodium hydroxide.

[0039] In a preferred embodiment, the method for absorbing free anionic dyes in the dyeing waste liquid or dyed washing liquid of the present invention comprises the following steps:

[0040] i) provide the modified non-woven fabric of the present invention;

[00...

Embodiment 1

[0056] Immerse 5 grams of viscose non-woven fabric in the modified working solution. The working solution is: 1-allyl-3-methylimidazolium chloride: 2 g / L, 4-chloro-s-triazine-2, 6-Di-p-benzylamine quaternary ammonium salt: 8 g / L, NaOH: 2 g / L, the working solution used was 75 ml; treated at 65°C for 40 min, and dried to obtain the modified non-woven fabric 1.

[0057] Dyeing example 1:

[0058] Take 10 grams of two identical pure cotton knitted bleached cloths, and dye them according to the following process:

[0059] Take 0.6 grams of reactive dye Argosol black RWN, put it into 100ml water at 40°C, stir evenly, put it into pure cotton knitted bleached cloth, heat it up to 60°C, keep it warm, divide it into three times after 5 minutes, each time at an interval of 10 minutes, and add 8.0 g Na 2 SO 4 , after continuing to keep warm for 30 minutes, add 2.0g Na 2 CO 3 , continue to keep warm for 60 minutes, then stop, take out the fabric, and obtain the dyed pure cotton knitte...

Embodiment 2

[0068] Immerse 5 grams of cotton non-woven fabric in the modified working solution. The working solution is: sodium N-allylpyridinium sulfite: 3 g / L, chlorinated polyepichlorohydrin trimethylammonium salt: 5 g / L, NaOH: 5 g / L, the dosage of the working solution is 75 ml; treat at 80°C for 30 min, and obtain the modified non-woven fabric 2;

[0069] Dyeing example 2:

[0070] Take 10 grams of two identical nylon knitted fabrics and dye them according to the following process:

[0071] Take the acid dye Jagset Blue N-R: 0.2g, Accordion PL: 0.15g, ammonium acetate: 0.15g, add it into 100ml water at 40°C, raise the temperature to 95°C at 2°C / min, keep it warm for 60min, and then stop the dyeing. The nylon knitted fabric is taken out to obtain the dyed nylon knitted fabric and the dyed residue.

[0072] Contrast washing example 2:

[0073] The dyed fabric in dyeing example 2→washing in hot water (75°C*15min)→soaping (Accord SW-PA: 3g / L, 60°C*15min)→warm water washing (60°C*15min)...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention discloses modified non-woven fabric as well as a preparation method and a use method thereof. The modified non-woven fabric is prepared from 1-6wt% of ionic liquid, 8-20wt% of a reactive cation modifier and 1-6wt% of inorganic strong alkali based on the weight of the non-woven fabric. The modified non-woven fabric provided by the invention can effectively absorb or adsorb free anionic dyes in dyeing waste liquid or water washing liquor obtained after dyeing, thus increasing the washing efficiency, improving the performance of the washed fabric and reducing the washing temperature; furthermore, a soaping agent does not need to be added, and the pollution level of the waste water is remarkably reduced.

Description

technical field [0001] The invention relates to a modified non-woven fabric and its preparation and use method, in particular to a modified non-woven fabric for treating the dyeing waste liquid of anionic dyes or washing liquid after dyeing and its preparation and use method. Background technique [0002] In the past ten years, my country's printing and dyeing industry has developed rapidly, and its scale has ranked among the top in the world. However, according to the latest "2013 Environmental Statistics" released by the Ministry of Environmental Protection, the wastewater discharge of my country's textile industry in 2013 was 11.62 million tons per day, ranking first among all countries in the country. The fourth place in the industry's wastewater discharge. In the printing and dyeing process, the use of a large number of dyes and chemicals will cause serious chroma and toxicity pollution to the water body, making post-processing difficult. [0003] In the dyeing of anion...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D06M13/473D06M11/38D06M13/477D06M15/55D06M13/368D06P5/08B01J20/24B01J20/30B01J20/28C02F1/28C02F101/30D06M101/06
CPCB01J20/24B01J20/28033C02F1/288C02F2101/308D06M11/38D06M13/368D06M13/473D06M13/477D06M15/55D06M2101/06D06P5/08
Inventor 杨天乔李正雄
Owner SHANGHAI ARGUS NEW MATERIAL CO LTD
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