阅读说明：本技术 一种新型化纤织物高效退浆剂及其制备方法 (Novel efficient desizing agent for chemical fiber fabric and preparation method thereof ) 是由 苏宇 于 2019-11-05 设计创作，主要内容包括：本发明公开了一种新型化纤织物高效退浆剂,按重量百分比计,由以下组分组成：阳离子表面活性剂10-35％；非离子表面活性剂10-35％；渗透剂1-5％；退浆剂7-16％；螯合分散剂2-6％；抑菌剂1-2.5％；pH调节剂1-2.5％和余量水；其制备方法,包括以下步骤：(1)将阳离子表面活性剂、非离子表面活性剂、渗透剂和螯合分散剂混合,加入1/3-1/2的水,超声分散,得溶液A；(2)将退浆剂和剩余的水混合,超声分散,再加入抑菌剂和pH调节剂,超声分散,得溶液A；(3)将溶液A缓慢加入溶液B中,搅拌,即得。本发明的退浆剂使用范围广、退浆除油效果好,不伤织物,其具有良好的乳化、分散、渗透和精炼效果。(The invention discloses a novel chemical fiber fabric efficient desizing agent which comprises the following components in percentage by weight: 10-35% of cationic surfactant; 10-35% of nonionic surfactant; 1-5% of penetrant; 7-16% of desizing agent; 2-6% of a chelating dispersant; 1-2.5% of bacteriostatic agent; 1-2.5% of pH regulator and the balance of water; the preparation method comprises the following steps: (1) mixing a cationic surfactant, a nonionic surfactant, a penetrating agent and a chelating dispersant, adding water of 1/3-1/2, and performing ultrasonic dispersion to obtain a solution A; (2) mixing the desizing agent with the rest water, performing ultrasonic dispersion, adding the bacteriostatic agent and the pH regulator, and performing ultrasonic dispersion to obtain a solution A; (3) and slowly adding the solution A into the solution B, and stirring to obtain the water-soluble organic silicon dioxide. The desizing agent has wide application range, good desizing and oil removing effects, no damage to fabrics, and good emulsifying, dispersing, permeating and refining effects.)

1. The chemical fiber fabric desizing agent is characterized by comprising the following components in percentage by weight:

10-35% of cationic surfactant;

10-35% of nonionic surfactant;

1-5% of penetrant;

7-16% of desizing agent;

2-6% of a chelating dispersant;

1-2.5% of bacteriostatic agent;

1-2.5% of pH regulator;

and the balance water;

the chelating dispersant is the combination of a polyphosphate complex and cyclodextrin.

2. The chemical fiber fabric desizing agent of claim 1, wherein the mass ratio of the polyphosphate complex to the cyclodextrin is 2-6: 1.

3. The chemical fiber fabric desizing agent of claim 1, wherein said cationic surfactant is a combination of dodecylpyridine chloride and sodium dodecyl sulfate.

4. The chemical fiber fabric desizing agent of claim 3, wherein the mass ratio of the dodecyl pyridine chloride to the sodium dodecyl sulfate is 1: 3-5.

5. The chemical fiber fabric desizing agent of claim 1, wherein said nonionic surfactant is a combination of polyoxyethylene polyoxypropylene propylene glycol ether, polyethylene glycol octyl phenyl ether and alkyl glycoside.

6. The chemical fiber fabric desizing agent of claim 5, wherein the mass ratio of the polyoxyethylene polyoxypropylene propylene glycol ether, the polyethylene glycol octyl phenyl ether and the alkyl glycoside is 1:1: 2-5.

7. The chemical fiber fabric desizing agent of claim 1, wherein the mass ratio of the chelating dispersant to the desizing agent is 3.6: 1.

8. A method for preparing the desizing agent for chemical fiber fabrics according to any one of claims 1 to 7, which is characterized by comprising the following steps:

(1) mixing a cationic surfactant, a nonionic surfactant, a penetrating agent and a chelating dispersant in a formula amount, adding water in a formula amount of 1/3-1/2, and performing ultrasonic dispersion for 15-20min to obtain a solution A;

(2) mixing the desizing agent with the rest amount of water, ultrasonically dispersing for 8-15min, adding the bacteriostatic agent and the pH regulator with the amount of the formula, and ultrasonically dispersing for 2-5min to obtain a solution B;

(3) and (3) slowly adding the solution A obtained in the step (1) into the solution B obtained in the step (2), and stirring to obtain the chemical fiber fabric desizing agent.

9. The method of claim 7, wherein the conditions for the ultrasonic dispersion in step (1) and step (2) are: the frequency is 20-25kHz, and the temperature is 20-35 ℃.

10. The method as claimed in claim 7, wherein the rotation speed of the stirring in step (3) is 200-250r/min for 15-28min, thereby obtaining the desizing agent for chemical fiber fabrics.

Technical Field

The invention belongs to the technical field of textile printing and dyeing auxiliaries, and particularly relates to a novel efficient desizing agent for chemical fiber fabrics and a preparation method thereof.

Background

In the manufacturing of fabrics, warp yarns are repeatedly subjected to the action of friction and tension in the weaving process to cause fuzzing and yarn breakage of the yarns, and in order to improve the wear resistance of the yarns and improve the weavability of the yarns, the weaving process is smoothly performed, and the warp yarns are generally subjected to sizing treatment before the manufacturing. However, the size affects the wettability of the fabric during the dyeing and finishing process, prevents chemicals from contacting the fibers, and directly affects the quality of the printing and dyeing process, so desizing must be performed before printing and dyeing.

The methods for desizing various fabrics vary depending on the size used for slashing, and the following four methods are commonly used:

① Hot Water desizing method, the fabric is padded with hot water and piled in a desizing pool for more than ten hours under heat preservation to make the size swell and easy to wash away with water, the method has good desizing effect for the fabric using water soluble sodium alginate, cellulose derivative and the like as the size, and for the fabric using starch for sizing, the method is piled for a long time at 25-40 ℃, and the fabric can be naturally fermented and degraded to obtain the desizing effect.

② alkaline solution desizing method comprises swelling starch under the action of sodium hydroxide (caustic soda), dissolving polyacrylic acid polymer in alkaline solution easily, using excessive high concentration sodium hydroxide solution as desizing agent, with concentration of 10-20g/L, padding fabric in alkaline solution, and stacking at 60-80 deg.C for 6-12 hr, or using alkali and acid to desize cotton fabric, wherein the method comprises desizing with alkaline solution, washing with water, and stacking with dilute sulfuric acid with concentration of 4-6g/L for several hr to further promote starch hydrolysis, and has the effect of washing off inorganic salt impurities in cotton fiber.

③ enzyme desizing method mainly used for decomposing starch slurry on fabric, the desizing efficiency is high, amylase is a biochemical catalyst, commonly used is pancreatic amylase and bacterial amylase, both of which mainly comprise α -amylase, which can promote the break of glycoside bond of starch long chain molecule, generate dextrin and maltose and easily wash off from fabric, the amylase desizing liquid is near neutral, sodium chloride, calcium chloride and the like are usually added as activator to improve the activity of enzyme in use, after fabric padding amylase liquid, the fabric padding liquid is piled for 1-2 hours at 40-50 ℃ to make starch fully hydrolyzed, the bacterial amylase is heat-resistant than pancreatic amylase, therefore, after the fabric padding enzyme liquid, a rapid process of steaming for 3-5 minutes can also be adopted to create conditions for continuous desizing process.

④ desizing method using oxidizing agent includes padding fabric in 3-5g/L alkaline solution of hydrogen peroxide, steaming for 2-3 min to promote degradation of starch and polyvinyl alcohol and bleach the fabric, and stacking for about 20min at ordinary temp. for the fabric to be desized with carboxymethyl cellulose, starch or polyvinyl alcohol, ammonium or potassium persulfate salt to be desized and easy to damage cellulose fibre.

CN103422337A discloses a composite desizing aid, which comprises, by weight, 20-25 parts of hydroxypropyl acrylate, 10-18 parts of silicate, 5-7 parts of chelating dispersant and 6-10 parts of sodium salt, wherein the chelating agent is combined with the hydroxypropyl acrylate, the silicate and the like, so that metal ions generated in the desizing process can be consumed, and the formation of precipitates can be avoided; pectin in the desized liquid can also be removed. The desizing rate and the capillary effect of the fabric are improved, and the fabric has a good treatment effect.

CN108505318A discloses a novel desizing agent and a preparation method thereof, wherein the desizing agent comprises the following components in parts by weight: sodium hydroxide: 2-8, polyoxyethylene nonylphenol ether: 15-20, dodecyl trimethyl ammonium chloride: 5-10, glyceryl cocoate: 5-10, coconut mono-isopropanolamide: 2-7, isocetyl stearate: 6-12, polydimethylsiloxane: 1-3, sodium laurate: 2-6, ethylene glycol: 4-8, polyvinylpyrrolidone: 1-4, ammonium persulfate: 2-6, potassium chloride: 1-4, nano zinc oxide: 1-4, ethylhexyl palmitate: 2-5, propanol: 8-15, water: 25-35, the desizing rate of the fabric treated by the desizing agent provided by the invention is more than 96.1%, the treated fabric has high capillary effect, good hand feeling, good whiteness and good hydrogen peroxide resistance stability, and the damage of hydrogen peroxide to the fabric can be reduced.

Along with the continuous improvement of people's standard of living, requirement and the required quality to the fabrics are also higher and higher, however desizing agent ubiquitous among the prior art is single in function, and application range receives the great scheduling problem of influence of temperature and pH, and simultaneously, in the chemical fiber fabric pretreatment process, the desizing is inhomogeneous often appeared, thick liquids are stained conversely, deoiling is uneven, thereby lead to producing in processing such as follow-up dyeing the thick liquid spot, the dyeing colour flower, the cloth cover dyeing is inhomogeneous, the quality of fabrics has seriously been influenced, therefore, need to provide a novel high-efficient desizing agent of chemical fiber fabric urgently.

Disclosure of Invention

The invention aims to solve the defects of the prior art and provides a novel chemical fiber fabric efficient desizing agent which has the advantages of wide application range, good desizing and oil removing effects, no damage to fabrics, and good emulsifying, dispersing, permeating and refining effects, and a preparation method thereof.

In order to achieve the purpose, the invention provides the following technical scheme:

a novel chemical fiber fabric efficient desizing agent comprises the following components in percentage by weight:

10-35% of cationic surfactant;

10-35% of nonionic surfactant;

1-5% of penetrant;

7-16% of desizing agent;

2-6% of a chelating dispersant;

1-2.5% of bacteriostatic agent;

1-2.5% of pH regulator;

and the balance water.

Preferably, the chelating dispersant is a combination of a polyphosphate complex and a cyclodextrin; further preferably, the mass ratio of the polyphosphate complex to the cyclodextrin is 2-6: 1.

Preferably, the cationic surfactant is a combination of dodecylpyridine chloride and sodium lauryl sulfate; further preferably, the mass ratio of the dodecyl pyridine chloride to the sodium dodecyl sulfate is 1: 3-5.

Preferably, the nonionic surfactant is a combination of polyoxyethylene polyoxypropylene propylene glycol ether, polyethylene glycol octyl phenyl ether and alkyl glycoside; further preferably, the mass ratio of the polyoxyethylene polyoxypropylene propylene glycol ether, the polyethylene glycol octyl phenyl ether and the alkyl glycoside is 1:1: 2-5.

Preferably, the penetrant is sodium di-sec-octyl maleate sulfonate.

Preferably, the pH adjusting agent is potassium dihydrogen phosphate.

Preferably, the bacteriostatic agent is a quaternary ammonium salt bacteriostatic agent.

Preferably, the desizing agent is soda ash.

The invention also provides a preparation method of the novel chemical fiber fabric high-efficiency desizing agent, which comprises the following steps:

(1) mixing a cationic surfactant, a nonionic surfactant, a penetrating agent and a chelating dispersant in a formula amount, adding water in a formula amount of 1/3-1/2, and performing ultrasonic dispersion for 15-20min to obtain a solution A;

(2) mixing the desizing agent with the rest amount of water, ultrasonically dispersing for 8-15min, adding the bacteriostatic agent and the pH regulator with the amount of the formula, and ultrasonically dispersing for 2-5min to obtain a solution B;

(3) and (3) slowly adding the solution A obtained in the step (1) into the solution B obtained in the step (2), and stirring to obtain the efficient composite desizing agent.

Preferably, the conditions of the ultrasonic dispersion in step (1) and step (2) are as follows: the frequency is 20kHz, and the temperature is 20-35 ℃.

Preferably, the rotation speed of the stirring in the step (3) is 250r/min, and the novel chemical fiber fabric high-efficiency desizing agent is obtained after stirring for 30 min.

The invention has the advantages that:

(1) the novel chemical fiber fabric efficient desizing agent has excellent removal effect on various sizing agents on fabrics, and avoids the dyeing problem caused by incomplete desizing;

(2) the dispersing agent has excellent dispersing performance, can effectively avoid the back staining of the pulp fabric, and reduces the risk of staining the fabric due to the coagulation of the pulp in the working solution;

(3) the oil removing effect is good, and the problems of color flowers, strip flowers and the like caused by incomplete oil removal of the fabric can be effectively avoided;

(4) the wetting and penetrating functions are excellent, and the serosa can be well wetted and quickly penetrated;

(5) the application range is wide, and the use is effective under the conditions of different pH values;

(6) is environment-friendly, has good biodegradability and does not contain APEO.

Detailed Description

The following description of the embodiments is only intended to aid in the understanding of the method of the invention and its core ideas. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention. The following description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. Although any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present invention, the preferred methods and materials are now described.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

The invention does not limit the source of the raw materials, and can be used as common commercial products.

Basic embodiment

A novel chemical fiber fabric efficient desizing agent comprises the following components in percentage by weight:

10-35% of cationic surfactant;

10-35% of nonionic surfactant;

1-5% of penetrant;

7-16% of desizing agent;

2-6% of a chelating dispersant;

1-2.5% of bacteriostatic agent;

1-2.5% of pH regulator;

and the balance water;

the chelating dispersant is polyphosphate complex and cyclodextrin in a mass ratio of 2-6: 1.

The cationic surfactant is dodecyl pyridine chloride and sodium dodecyl sulfate in a mass ratio of 1: 3-5;

the nonionic surfactant is polyoxyethylene polyoxypropylene propylene glycol ether, polyethylene glycol octyl phenyl ether and alkyl glycoside in a mass ratio of 1:1: 2-5;

the penetrating agent is sodium di-sec-octyl maleate sulfonate;

the pH regulator is potassium dihydrogen phosphate;

the bacteriostatic agent is quaternary ammonium salt bacteriostatic agent;

the desizing agent is soda ash.

The preparation method of the novel chemical fiber fabric high-efficiency desizing agent comprises the following steps:

(1) mixing a cationic surfactant, a nonionic surfactant, a penetrating agent and a chelating dispersant in a formula amount, adding water in a formula amount of 1/3-1/2, and performing ultrasonic dispersion for 15-20min under the conditions that the frequency is 20-25kHz and the temperature is 20-35 ℃ to obtain a solution A;

(2) mixing the desizing agent with the rest amount of water, ultrasonically dispersing for 8-15min at the frequency of 20-25kHz and the temperature of 20-35 ℃, adding the bacteriostatic agent and the pH regulator with the amount of the formula, and ultrasonically dispersing for 2-5min to obtain a solution B;

(3) slowly adding the solution A obtained in the step (1) into the solution B obtained in the step (2), and stirring for 15-28min under the condition that the rotating speed is 200-250r/min to obtain the chemical fiber fabric desizing agent.

Table 1 table of raw material components of examples 1 to 6