阅读说明：本技术 一种锦纶、氨纶纤维上色同步性提升剂及其使用方法 (Polyamide and spandex fiber coloring synchronism improver and use method thereof ) 是由 苏宇 于 2019-11-12 设计创作，主要内容包括：本发明提供了一种锦纶、氨纶纤维上色同步性提升剂及其使用方法,属于织物染色领域。该锦纶、氨纶纤维上色同步性提升剂包括复配活性剂、纳米纤维素、螯合分散剂和壳聚糖,其中复配活性剂浓度为0.4-1g/L,纳米纤维素浓度为5-15g/L,螯合分散剂浓度为0.1-0.8g/L,壳聚糖浓度为5-15g/L,复配剂还包括阳离子表面活性剂。在使用时先用该锦纶、氨纶纤维上色同步性提升剂预处理再进行染色,可以大大提高锦纶氨纶染色的同步性,染色后染料在氨纶上的上色佳且无湿牢度的损失,避免“露白”问题,操作简单、环保安全,具有良好的应用前景。(The invention provides a nylon and spandex fiber coloring synchronism improver and a use method thereof, belonging to the field of fabric dyeing. The nylon and spandex fiber coloring synchronism improver comprises a compound active agent, nanocellulose, a chelating dispersant and chitosan, wherein the concentration of the compound active agent is 0.4-1g/L, the concentration of the nanocellulose is 5-15g/L, the concentration of the chelating dispersant is 0.1-0.8g/L, the concentration of the chitosan is 5-15g/L, and the compound agent further comprises a cationic surfactant. When the nylon and spandex fiber dyeing synchronism improver is used, the nylon and spandex fiber dyeing synchronism improver is used for pretreatment and then dyeing, the nylon and spandex dyeing synchronism can be greatly improved, the dyeing of the dyed dye on spandex is good, the loss of wet fastness is avoided, the white exposure problem is avoided, the operation is simple, the environment is protected, and the application prospect is good.)

1. A nylon and spandex coloring synchronism improver is characterized by comprising a compound activator, nanocellulose, a chelating dispersant and chitosan.

2. The synchronous dyeing improver of chinlon and spandex according to claim 1, wherein the compound active agent comprises fatty amine polyoxyethylene ether and cationic surfactant in a ratio of 1: 0.5-0.8;

the cationic surfactant is quaternary ammonium salt cationic surfactant selected from one or more of dodecyl dimethyl benzyl ammonium chloride, dodecyl dimethyl benzyl ammonium bromide, octadecyl trimethyl ammonium chloride and dioctadecyl dimethyl ammonium chloride.

3. The synchronous dyeing improver of chinlon and spandex as recited in claim 1, wherein the concentration of the compound activator is 0.4-1 g/L.

4. The synchronous dyeing improver of chinlon and spandex as recited in claim 1, wherein said nanocellulose is one or more of hydroxypropyl methylcellulose and carboxymethyl cellulose.

5. The synchronous dyeing improver of chinlon and spandex as recited in claim 1, wherein the concentration of said nanocellulose is 5-15 g/L.

6. The synchronous dyeing improver of chinlon and spandex as recited in claim 1, wherein the concentration of said chelating dispersant is 0.1-0.8 g/L.

7. The synchronous dyeing improver of polyamide and spandex according to claim 1, wherein the chitosan is chitosan with a deacetylation degree of 86-90%.

8. The synchronous dyeing improver of chinlon and spandex as recited in claim 1, wherein the concentration of chitosan is 5-15 g/L.

9. A use method of the nylon and spandex coloring synchronous improver as defined in any one of claims 1 to 8, comprising the steps of immersing the fabric into the nylon and spandex coloring synchronous improver for pretreatment, and then dyeing.

10. The method of claim 9, wherein the pre-treatment step conditions are: the soaking bath ratio is 1:10, the temperature is 45-55 deg.C, pH is 5-6, stirring for 20-30min, and discharging liquid.

Technical Field

The invention relates to the field of fabric dyeing, in particular to a nylon and spandex fiber coloring synchronism improver and a preparation method thereof.

Background

The spandex has excellent elastic performance, and the elongation at break is generally 400-700 percent and can reach over 800 percent; the elastic recovery rate after deformation and elongation of 300% can reach more than 95%, and the elastic recovery rate is widely applied to the field of textile fabrics. However, the molecular structure of the spandex has more hydrophobic methylene chains and less aromatic groups, and basically has no ionic groups and strong hydrophilic groups, so that the spandex is a hydrophobic fiber. In addition, the spandex is a segmented copolymer, and although a plurality of polar groups are arranged in a hard segment of the spandex, the spandex has a compact structure and strong crystallinity, and dye molecules are difficult to enter; the soft segment is an ether chain or an ester chain, the structure is loose, and the binding property with the dye is poor. Because of the difficulty of dyeing the spandex, the spandex is usually mixed with other fibers and has a low content of the spandex (generally 5 to 10 mass percent).

Fashion underwear on the market is mostly formed by blending chinlon and spandex, and the chinlon fabric containing the spandex component is comfortable to wear and extremely low in wrinkle effect, so that the fashionable underwear is deeply loved by swimwear, underwear and sportswear customers. However, because the two fibers have completely different chemical structures, the spandex dyeing speed is low, the dyeing rate is low, and if only the acid dye which is beneficial to dyeing chinlon is used independently, the phenomenon of white exposure of the spandex fiber can be caused, namely, the spandex fiber is not dyed uniformly.

Nanocellulose has good hydrophilicity, which can attach to the fiber surface, providing amino groups. Because the lack of amino at the tail end of the macromolecular chain is one of the reasons of poor dyeing property of spandex fibers, the addition of the nanocellulose can increase an adsorption base for dyes, make up the defect of poor adsorption of the spandex to the dyes and promote the synchronism of polyamide/spandex coloring; at present, nanocellulose is mainly used for improving the hydrophilicity of fabrics in textile, such as manufacturing hydrophilic terylene, and is not researched in the field of dyeing.

Chinese patent 201810349204.4 discloses a nano-cellulose modified acrylic fiber and a preparation method and application thereof, wherein nano-cellulose is added before spinning, first nano-cellulose with large length-diameter ratio is dispersed, at the moment, the nano-cellulose is lapped into a net, and then the nano-cellulose is adsorbed on the net when second nano-cellulose is dispersed, so that the nano-cellulose agglomeration can be avoided, the dispersibility is improved, the stability of the nano-cellulose in a spinning solution can be improved, and the agglomeration or precipitation cannot occur due to standing. By selecting the nano cellulose with specific surface area, the water content of the acrylic fiber can be improved, the problem of poor hygroscopicity of the acrylic fiber is solved, and the skin feeling of the acrylic fiber is improved. The preparation method relates to a spinning step and cannot be applied to a dyeing process of a finished product.

Chinese patent 201610051924.3 provides a dyeing and finishing process for a green brocade/spandex four-side stretch fabric, which adopts the following dyeing auxiliary formula: 1-1.5g/L of an acidic leveling agent, 0.8-1g/L of an acid releasing agent, 1g/L of a chelating dispersant, 0.5-2% (o.w.f.) of acid bright yellow and 0.3-4% (o.w.f.) of acid emerald green, which improve the synchronism of the acid bright yellow and the acid emerald green, effectively slow down the competition of the two dyes on the fiber dyeing and reduce the phenomenon of dyeing splash, but the color fixing process adopts a full positive pump to operate, and comprises the following steps: adding a color fixing auxiliary agent formula under the condition of normal temperature, then washing for 10-15min with cold water, heating to 70-80 ℃ at the heating rate of 1 ℃/min, keeping the temperature for 20-0 min, and discharging liquid at 60 ℃, wherein the process operation is complex, the temperature needs to be converted, and the temperature control requirement is higher.

Aiming at the problems, the invention provides the improver for synchronous dyeing of the chinlon/spandex, which can greatly improve the synchronism of dyeing of the chinlon/spandex, the dyed dye has good dyeing on the spandex and no loss of wet fastness and tensile strength, avoids the problem of white exposure, and has the advantages of simple operation, environmental protection, safety and good application prospect.

Disclosure of Invention

The detection method involved in the implementation process of the invention is a conventional detection method in the field.

The water involved in the implementation process of the invention can be various water such as tap water, drinking water, distilled water and the like.

A synchronous dyeing improver for polyamide fibre and spandex is composed of composite activator, nano-cellulose, chelating disperser and chitosan.

Wherein:

the compound active agent comprises fatty amine polyoxyethylene ether and cationic surfactant, and the ratio of the fatty amine polyoxyethylene ether to the cationic surfactant is 1: 0.5-0.8.

The cationic surfactant is an organosilicon gemini surfactant.

The concentration of the compound active agent is 0.4-1g/L, preferably 0.5 g/L.

The nano-cellulose is one or more of hydroxypropyl methyl cellulose and carboxymethyl cellulose, and preferably carboxymethyl cellulose.

The concentration of the nano-cellulose is 5-15g/L, and preferably 15 g/L.

The chelating dispersant concentration is 0.1 to 0.8g/L, preferably 0.8 g/L.

The chitosan with deacetylation degree of 86-90% is selected.

The chitosan concentration is 5-15g/L, preferably 15 g/L.

The invention also provides a preparation method of the nylon and spandex coloring synchronization improver, which comprises the following steps:

dispersing nano-cellulose in water uniformly according to the formula dosage to obtain a solution 1; adding the compound active agent, the chitosan and the chelating and dispersing agent with the formula dosage into the solution 1 while stirring.

Wherein:

the method for uniformly dispersing the nanocellulose in the water comprises the steps of ultrasonic dispersion and stirring dispersion, and preferably ultrasonic dispersion.

In addition, the invention also provides a using method of the nylon and spandex coloring synchronous improver, which comprises the steps of immersing the fabric into the nylon and spandex coloring synchronous improver of the formula for pretreatment, and then dyeing.

The conditions of the pretreatment steps are as follows: the dipping bath ratio was 1: 10. Stirring at 45-55 deg.C and pH of 5-6 for 20-30min, and discharging liquid.

Compared with the prior art, the invention has the following beneficial effects:

the compound activator can provide an adsorption base for the dye for the fiber, improve the dye uptake, prevent the flocculation of the nano-cellulose and promote the uniform attachment of the nano-cellulose on the fabric.

The nano-cellulose has excellent hydrophilicity, makes up the defect of poor adsorption of spandex on dye, and promotes the coloring synchronism of the chinlon and the spandex.

The chitosan can accelerate the diffusion speed of the dye, enhance the level-dyeing property of the dye and simultaneously has good antibacterial performance.

The dyeing synchronism promoting agent for the chinlon and the spandex is added during dyeing, the operation is simple, the environment is protected, the safety is realized, the dyeing synchronism of the chinlon/spandex is greatly improved, the dyed dye is good in dyeing on the spandex, and the loss of wet fastness and tensile strength is avoided.

Detailed Description

The present invention will be further explained with reference to specific embodiments in order to make the technical means, the original characteristics, the achieved objects and the effects of the present invention easy to understand, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments are possible. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention.

The detection methods in the following examples are all conventional detection methods unless otherwise specified; the reagents in the following examples were purchased from commercial sources unless otherwise specified.

In the nylon and spandex fabrics in the following examples, the nylon accounts for 20% and the spandex accounts for 80%.

The cationic surfactants used in the following examples were: