CN112962332B - Washing-free method for dyeing by reactive dye - Google Patents

Abstract

The invention relates to a washing-free method for dyeing by using a reactive dye, which comprises the steps of sequentially carrying out padding of an alkali liquor, padding of a reactive dye dyeing solution, pre-drying, reaction of the reactive dye and fibers in a fabric in a non-aqueous solvent, padding of a color fixing agent and baking on the fabric, thus obtaining a dyed finished product, wherein the fiber material is cellulose and/or protein; after the pre-drying treatment, the water content of the fabric is less than or equal to 40% of the weight of the fabric; the reactive dye reacts with the fiber in the fabric in the non-aqueous solvent, namely the pre-dried fabric is placed in the non-aqueous solvent with the temperature of 90-100 ℃ for heat preservation for 35-130 s, and the fixation rate of the reactive dye on the fabric is more than 95%; the non-aqueous solvent is a solvent which is not soluble in water and has no interaction with the reactive dye, and the boiling point is above 100 ℃. The washing-free method for dyeing by using the reactive dye can completely avoid the washing process after dyeing, thereby greatly reducing the discharge of the printing and dyeing washing wastewater; can realize less alkali, less water, no salt and no assistant dyeing, and really meets the requirement of green clean production.

Description

A kind of washing-free method of reactive dye dyeing

technical field

The invention belongs to the technical field of dyeing and finishing technology, and relates to a washing-free method for reactive dye dyeing.

Background technique

As the economy and society move from high-speed development to high-quality development, the requirements for manufacturing production are getting higher and higher, especially wastewater discharge has always been the focus of social concern. Because of its natural characteristics and comfortable wearing conditions, pure cotton fabric has always been popular with people. In the production and processing of textiles, cotton fabrics have always occupied a large proportion and are an important component of dyeing and finishing production.

In the traditional water-bath dyeing of reactive dyes, cellulose and protein fabrics usually use pad steaming and exhaust dyeing, but these two common processing methods have a serious problem. The color fixation rate of reactive dyes is not high, about 50%~ 70%. After dyeing, hydrolyzed dyes and unfixed dyes form floating colors in the gaps of fibers and on the surface of fabrics. After dyeing, it needs to be washed with a lot of water, so that its fastness can meet the market demand. Most of the dyeing wastewater comes from washing wastewater. A dyeing and finishing process consumes 100 tons of water per ton of cotton textiles, of which 80 tons is washing wastewater. Therefore, workers in the dyeing and finishing industry have been looking for a new dyeing process and post-treatment additives to improve the fixation rate and washing fastness of reactive dyes and reduce the water consumption in the washing process.

The researchers found that reducing the water content on the fabric in the dyeing system can greatly reduce the hydrolysis of the dye, greatly increase the fixation rate of the reactive dye, and reduce the water consumption in the washing stage. CN201310226672.X adopts changing the preparation method of dye liquor and fixation solution in the pad dyeing process of textiles, and the dye liquor or fixation solution formed by mixing a high proportion of alcoholic organic solvent and a small amount of water with dyestuff or color fixation agent are respectively applied to textiles. Carry out pad dyeing and color fixation, so as to improve the color fixation rate of textile pad dyeing. While ensuring the dye uptake and level dyeing, it can reduce the hydrolysis of the dye and improve the color fixation rate. However, ethanol or isopropanol is miscible with water, and is flammable and explosive. There are problems in the reuse and safety of alcohols. CN20161077603.8 uses two kinds of solvents to replace water in the dyeing system, and dyes the fabric in a completely anhydrous environment, greatly improving the color fixation rate of reactive dyes. Fastness requirements, to achieve solvent dyeing of cotton textiles, but the two solvents used in this system are good solvents and poor solvents for reactive dyes, and good solvents for reactive dyes, such as N,N-dimethylformamide, N, N-dimethylacetamide, dimethyl sulfoxide, ionic liquids, alcohol ether solvents, etc. will enter the fiber, and this part of the solvent is difficult to recover, which will affect the safety of dyed textiles and the cost of dyeing. Area industrialization promotion. In the traditional water-bath dyeing process, reactive dyes will inevitably be hydrolyzed, reducing the color fixation rate. Although using a part of organic solvent to replace part of the water, or even all of the water, can obtain high-fixation reactive dyeing, after dyeing, use less water to remove floating color and unfixed dye, but organic solvent dyeing or organic solvent part The dyeing process of reactive dyes instead of water faces many problems in actual production, such as the difficulty of medium recovery and complicated process. Therefore, how to improve the color fixation rate of reactive dyes and reduce wastewater discharge has become a key issue in green production.

Contents of the invention

In order to solve the above-mentioned problems in the prior art, the present invention provides a water-free method for dyeing with reactive dyes.

In order to achieve the above object, the scheme adopted by the present invention is as follows:

A kind of non-washing method of reactive dye dyeing, the fiber material is the fabric of cellulose and/or protein successively through padding lye, padding reactive dyeing solution, pre-drying, reactive dye and the fiber in the fabric in non-aqueous solvent Middle reaction, padding and fixing agent and baking to get the finished dyed product;

After the pre-drying treatment, the moisture content on the fabric is less than or equal to 40% of the weight of the fabric; the main purpose of the pre-drying is to reduce the liquid-carrying rate on the fabric. Slow, if it is prebaked for a long time, it will affect the color fixation rate of reactive dyes. For example, the cold pad batch is 24 hours at room temperature. Such a long period of stacking will affect the color fixation rate of dyes. If it is 1 to 5 minutes at 40 ° C, The hydrolysis of reactive dyes is only about 0.1-1%. In addition, under this condition, the dye and the fiber basically do not react, the temperature is low, and the penetration and reaction of the dye into the fiber are relatively low;

The reaction between the reactive dye and the fibers in the fabric in a non-aqueous solvent refers to putting the prebaked fabric into a non-aqueous solvent with a temperature of 90-100° C. for 35-130 seconds, and the color fixation rate of the reactive dye on the fabric is More than 95%; the fabric with low liquid rate enters the non-aqueous solvent with low surface tension, and the non-aqueous solvent quickly spreads on the surface of the fabric, transfers heat to the fabric and the dye, and promotes the dye to penetrate into the fiber and penetrate into the fiber The reactive dyes quickly undergo nucleophilic addition or nucleophilic substitution reactions with fibers and form covalent bonds with fibers. Due to the incompatibility of the dye aqueous solution and the non-aqueous solvent, and the fabric is continuously entering the non-aqueous solvent, there is no exchange (only heat transfer) between the non-aqueous solvent and the dye, so the dye adsorbed on the fiber will not Desorb into non-aqueous solvent. In summary, the fast spread of non-aqueous solvent on the fiber surface (fast heat transfer) and the fact that the dye will not be desorbed into the non-aqueous solvent greatly improve the fixation rate of reactive dyes.

The non-aqueous solvent is a solvent that is immiscible with water and has no interaction with reactive dyes (to prevent the reactive dyes carried on the fiber from diffusing into the non-aqueous solvent, affecting the color fixation rate of the reactive dyes), the non-aqueous solvent The boiling point of the dye is above 100°C (the fixing temperature of the reactive dye is generally lower than 90°C, so as to prevent the medium from being vaporized when the reactive dye reacts with the fiber, which affects the uniformity of dyeing).

As a preferred technical solution:

A kind of non-washing method of reactive dye dyeing as mentioned above, the specific technological process of obtaining dyed finished product is: Padding lye--drying for the first time--padding reactive dye dyeing solution--pre-drying-putting Dyeing in non-aqueous solvent - second drying - padding fixation agent finishing solution - baking - dyed finished product.

The water-free method of a kind of reactive dye dyeing as above, after described pre-drying treatment, the moisture content on the fabric is 20～40% to fabric weight (can reduce the hydrolysis of dyestuff, can guarantee that fiber obtains fully simultaneously. swelling).

A kind of washing-free method for dyeing with reactive dyes as described above, the lye is a mixed solution of sodium carbonate and sodium hydroxide, in the mixed solution, the concentration of sodium carbonate is 40g/l～60g/l, the hydrogen oxidized The concentration of sodium is 4g/l-6g/l; the alkali-containing liquid rate during the padding of lye is 50%-70%.

The concentration of the reactive dye dyeing solution is 5g/l-60g/l; the liquid carrying rate when padding the reactive dye dyeing solution is 50%-100%;

The reactive dye is a reactive dye with multiple reactive groups, the number of reactive groups is 2-3, and the amount of the dye is 0.5%-5% of the weight of the fabric.

A washing-free method for dyeing with reactive dyes as described above, the temperature of the pre-drying is 30-50°C, and the time is 1-5 minutes; the temperature of the first drying is 60°C, and the time is 10-15 minutes; The temperature of the second drying is 60°C, and the time is 4 to 8 hours; the non-aqueous solvent on the fabric is evaporated, condensed and recovered; the temperature of the baking is 120°C to 170°C, and the baking time is 0.5 min~3min.

In the non-washing method for dyeing with reactive dyes as described above, the raw materials used in the fabric are more than one of cotton, viscose, silk and wool.

A kind of water-free method for dyeing with reactive dyes as described above, the concentration of the color-fixing agent in the color-fixing agent finishing liquid is 20～40g/l, and the pH value of the color-fixing agent finishing liquid is 5～7; The coloring agent is pyridine quaternary ammonium salt, cetylpyridinium quaternary ammonium chloride, dicyandiamide formaldehyde resin water-soluble initial shrinkage body, polyamine resin type formaldehyde-free color fixing agent, quaternary ammonium salt type polycation color fixing agent , cationic water-based polyurethane color fixing agent or nano color fixing agent;

After padding the color-fixing agent finishing liquid, the liquid carrying rate of the fabric is 50%-100%.

As mentioned above, the non-washing method of dyeing with reactive dyes, the viscosity of the non-aqueous solvent at 40°C is lower than 30 mm ² /s (this process is a continuous process, the viscosity is too high, and the fabric is not easy to pass through the medium) , and the viscosity is too high, which will affect the recovery of the medium).

A kind of non-water washing method of reactive dye dyeing as above, described non-aqueous solvent is more than one in alkane, ether, sulfolane, dimethyl sulfoxide and siloxane; Described alkane is isooctane or paraffin .

According to the above-mentioned non-washing method of dyeing with reactive dyes, the dry rubbing fastness of the dyed product is grade 5, the wet rubbing fastness is 3-4 grades, and the washing fastness is 4-5 grades. (The test standard is: GB/T 3921-2008 "Test Method for Color Fastness to Soaping of Textiles" method B2; GB/T3920-2008 "Test Method for Color Fastness to Rubbing of Textiles" is implemented, after the colored fiber is spun into 29tex20S single yarn test again).

Mechanism of the present invention is as follows:

A kind of non-washing dyeing method that is applicable to reactive dyestuff dyed cellulose and/or protein fabric of the present invention, in this technology, reactive dyestuff, lye are attached to the fabric surface by the method of padding, and the water content of fabric after predrying The rate is lower than 40% to fabric weight, then passes through the non-aqueous solvent liquid of certain temperature rapidly, when the fabric that padding is passed through the non-aqueous solvent with certain temperature, non-aqueous solvent can spread rapidly on fabric surface (quick spreading is It is related to the surface tension of the non-aqueous solvent, generally 16-48mN/m, the lower the surface tension, the faster the non-aqueous solvent spreads on the fabric, and the shorter the heat transfer time), the temperature is transferred to the fabric , under these conditions, reactive dyes can react quickly with cellulose fibers and protein fibers, and the moisture content on the fabric after padding is very low, which are basically used for fiber swelling, promoting the reaction of dyes and fibers, and for dye hydrolysis. The amount of water is controlled very low, which can further reduce the hydrolysis of the dye, increase the color fixation rate of the dye, and make the color fixation rate of the reactive dye more than 95%. The fiber surface is difficult to remove by rubbing and washing, so as to achieve the effect of no washing. This can greatly reduce the pressure on wastewater discharge and sewage treatment. Reduce the production cost of the enterprise and relieve the environmental protection pressure in the processing area. The invention adopts the dyeing medium with low surface force to realize dyeing with less alkali, less water, no salt and no auxiliary agent, and truly realizes the requirement of green and clean production.

Compared with the traditional reactive dye dyeing process, the reactive dye dyeing no-wash process of the present invention only needs 2 to 3 times the water of the fabric's own weight in the preparation of lye, dyeing solution and color fixing solution, and does not need water after dyeing. Washing can meet the requirements of commercialization. The energy consumption and sewage discharge in the processing process are reduced. Using pad dyeing process, the color fixing rate of reactive dyes after color fixing is higher than 90%, and then after color fixing treatment, that is, after the color fixing agent is applied, the dry and wet rubbing fastness and washing fastness of the fabric can reach the level of home textile products Requirements for medium-hanging fabrics.

Beneficial effect

(1) The washing-free method of a kind of reactive dye dyeing of the present invention, compares with traditional dyeing, can completely dispense with washing process after dyeing, has greatly reduced the discharge of printing and dyeing washing waste water;

(2) the washing-free method of a kind of reactive dye dyeing of the present invention, in the dyeing process, greatly saved the consumption of water, electricity and steam;

(3) The non-washing method of a kind of reactive dye dyeing of the present invention, the medium selected is nontoxic, odorless, degradable, after dyeing processing finishes, only need fabric is dried and get final product, and solvent can be recycled and reused;

(4) The washing-free method of a kind of reactive dye dyeing of the present invention, adopts the dyeing medium of low surface force, realizes less alkali, less water, no salt, no auxiliary agent dyeing, has really realized the requirement of green clean production.

Detailed ways

The present invention will be further described below in combination with specific embodiments. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

Example 1

A kind of non-washing method of reactive dye dyeing, the steps are as follows:

(1) prepare fabric to be dyed: fabric to be dyed is cotton fabric;

(2) padding the mixed solution of sodium carbonate and sodium hydroxide to the fabric to be dyed, in the mixed solution, the concentration of sodium carbonate is 40g/l, the concentration of sodium hydroxide is 4g/l, the alkali-containing liquid rate during padding 55%;

(3) Carry out the first drying, the drying temperature is 60°C, and the drying time is 10 minutes;

(4) the fabric padding concentration after drying for the first time is the reactive red 111 dyeing solution of 15g/l, the liquid band rate during padding is 55%, and the consumption of dyestuff is 0.5% of fabric weight;

(5) Carry out pre-drying treatment, the temperature of pre-drying is 30 ℃, time 5min, after pre-drying treatment, the moisture content on the fabric is 32% to fabric weight;

(6) Putting the fabric after the pre-drying treatment into the isooctane with a temperature of 90° C. for 35 seconds and then dyeing; the color fixation rate of the reactive dye on the fabric is 97.58%;

(7) Carry out the second drying, the drying temperature is 60°C, and the drying time is 4h;

(8) The fabric padding concentration after drying for the second time is the cetylpyridinium bromide finishing solution with a pH value of 5 at a concentration of 20g/l, and the liquid carrying rate of the fabric after padding is 70%;

(9) Carry out baking to obtain dyed finished product, the temperature of baking is 120 ℃, the time of baking is 3min; class.

Example 2

A kind of non-washing method of reactive dye dyeing, the steps are as follows:

(1) prepare fabric to be dyed: fabric to be dyed is cotton fabric;

(2) padding the mixed solution of sodium carbonate and sodium hydroxide to the fabric to be dyed, in the mixed solution, the concentration of sodium carbonate is 40g/l, the concentration of sodium hydroxide is 5g/l, the alkali-containing liquid rate during padding 50%;

(3) Carry out the first drying, the drying temperature is 60°C, and the drying time is 12 minutes;

(4) the fabric padding concentration after drying for the first time is the reactive red 195 dyeing solution of 5g/l, and the liquid band rate during padding is 60%, and the consumption of dyestuff is 0.8% of fabric weight;

(5) Carry out pre-drying treatment, the temperature of pre-drying is 35 ℃, time 4min, after pre-drying treatment, the moisture content on the fabric is 30% to fabric weight;

(6) Putting the fabric after the pre-drying treatment into the paraffin wax with a temperature of 90° C. for 35 seconds and dyeing; the color fixation rate of the reactive dye on the fabric is 96.91%;

(7) Carry out the second drying, the drying temperature is 60°C, and the drying time is 4h;

(8) the fabric padding concentration after drying for the second time is the 2-methacryloyloxyethyl trimethylamine methosulfate finishing solution with a pH value of 20g/l and 5, and the fabric with liquid after padding The rate is 100%;

(9) Carry out baking to obtain dyed finished product, the temperature of baking is 125 ℃, and the time of baking is 3min; class.

Example 3

A kind of non-washing method of reactive dye dyeing, the steps are as follows:

(1) Prepare the fabric to be dyed: the fabric to be dyed is a viscose fabric;

(2) padding the mixed solution of sodium carbonate and sodium hydroxide to the fabric to be dyed, in the mixed solution, the concentration of sodium carbonate is 45g/l, the concentration of sodium hydroxide is 4.5g/l, the alkali-containing band liquid during padding The rate is 60%;

(3) Carry out the first drying, the drying temperature is 60°C, and the drying time is 12 minutes;

(4) the fabric padding concentration after drying for the first time is the reactive yellow 3RS dyeing solution of 12g/l, the liquid band rate during padding is 70%, and the consumption of dyestuff is 1.2% of fabric weight;

(5) Carry out pre-drying treatment, the temperature of pre-drying is 40 ℃, time 3min, after pre-drying treatment, the moisture content on the fabric is 28% to fabric weight;

(6) Putting the fabric after the pre-drying treatment into the n-butyl ether with a temperature of 95° C. for 50 s and dyeing; the color fixation rate of the reactive dye on the fabric is 98.22%;

(7) Carry out the second drying, the drying temperature is 60°C, and the drying time is 4.2h;

(8) the cetylpyridinium quaternary ammonium chloride ammonium chloride finishing solution with a fabric padding concentration of 25g/l and a pH value of 5 after drying for the second time, the liquid carrying rate of the fabric after padding is 68% ;

(9) Carry out baking to obtain dyed finished product, the temperature of baking is 128 ℃, the time of baking is 2.5min; The degree is 4~5 grades.

Example 4

A kind of non-washing method of reactive dye dyeing, the steps are as follows:

(1) prepare the fabric to be dyed: the fabric to be dyed is a silk fabric;

(2) padding the mixed solution of sodium carbonate and sodium hydroxide to the fabric to be dyed, in the mixed solution, the concentration of sodium carbonate is 50g/l, the concentration of sodium hydroxide is 5g/l, the alkali-containing liquid rate during padding 52%;

(3) Carry out the first drying, the drying temperature is 60°C, and the drying time is 10 minutes;

(4) the fabric padding concentration after drying for the first time is the active orange 122 dyeing solution of 20g/l, the liquid carrying rate during padding is 100%, and the consumption of dyestuff is 1.5% of fabric weight;

(5) Carry out pre-drying treatment, the temperature of pre-drying is 43 ℃, time 3min, after pre-drying treatment, the moisture content on the fabric is 40% to fabric weight;

(6) Putting the fabric after the pre-drying treatment into the sulfolane with a temperature of 95° C. for 60 seconds and then dyeing; the color fixation rate of the reactive dye on the fabric is 96.92%;

(7) Carry out the second drying, the drying temperature is 60°C, and the drying time is 4.8h;

(8) The fabric padding concentration after drying for the second time is the dicyandiamide-diethylenetriamine condensate finishing solution of 32g/l and pH value of 5.5, and the liquid carrying rate of the fabric after padding is 92%. ;

(9) Carry out baking to obtain dyed finished product, the temperature of baking is 120 ℃, the time of baking is 3.5min; The degree is 4~5 grades.

Example 5

A kind of non-washing method of reactive dye dyeing, the steps are as follows:

(1) prepare the fabric to be dyed: the fabric to be dyed is a woolen fabric;

(2) padding the mixed solution of sodium carbonate and sodium hydroxide to the fabric to be dyed, in the mixed solution, the concentration of sodium carbonate is 50g/l, the concentration of sodium hydroxide is 5g/l, the alkali-containing liquid rate during padding 65%;

(3) Carry out the first drying, the drying temperature is 60°C, and the drying time is 15 minutes;

(4) the fabric padding concentration after drying for the first time is the reactive red 194 dyeing solution of 20g/l, the liquid band rate during padding is 72%, and the consumption of dyestuff is 2% of fabric weight;

(5) Carry out pre-drying treatment, the temperature of pre-drying is 38 ℃, time 3.5min, after pre-drying treatment, the moisture content on the fabric is 36% to fabric weight;

(6) putting the fabric after the pre-drying treatment into the dimethyl sulfoxide with a temperature of 92° C. for 75 seconds and dyeing; the color fixation rate of the reactive dye on the fabric is 95.62%;

(7) Carry out the second drying, the drying temperature is 60°C, and the drying time is 6h;

(8) the fabric padding concentration after the second drying is 30g/l, the silk fixation agent LA finishing liquid that pH value is 6.5, and the liquid carrying rate of fabric after padding is 74%;

(9) Carry out baking to obtain dyed finished product, the temperature of baking is 136 ℃, and the time of baking is 2min; class.

Example 6

A kind of non-washing method of reactive dye dyeing, the steps are as follows:

(1) prepare the fabric to be dyed: the fabric to be dyed is a blended fabric of cotton and silk with a mass ratio of 50:50;

(2) padding the mixed solution of sodium carbonate and sodium hydroxide to the fabric to be dyed, in the mixed solution, the concentration of sodium carbonate is 60g/l, the concentration of sodium hydroxide is 6g/l, the alkali-containing liquid rate during padding 70%;

(3) Carry out the first drying, the drying temperature is 60°C, and the drying time is 10 minutes;

(4) the reactive red M-8B dyeing solution that the fabric padding concentration after drying for the first time is 30g/l, the band liquid rate during padding is 68%, and the consumption of dyestuff is 4% of fabric weight;

(5) Carry out pre-drying treatment, the temperature of pre-drying is 40 ℃, time 3min, after pre-drying treatment, the moisture content on the fabric is 38% to fabric weight;

(6) Putting the prebaked fabric into dodecamethylcyclohexasiloxane at a temperature of 98° C. for 85 seconds and then dyeing it; the color fixation rate of the reactive dye on the fabric is 98.24%;

(7) Carry out the second drying, the drying temperature is 60°C, and the drying time is 8h;

(8) the fabric padding concentration after drying for the second time is the water-based PU resin emulsion of 35g/l, pH value is 7, the liquid carrying rate of fabric after padding is 82%;

(9) Carry out baking to obtain dyed finished product, the temperature of baking is 148 ℃, the time of baking is 1.2min; The dry rubbing fastness of dyed finished product is 5 grades, and wet rubbing fastness is 4 grades, and washing fastness is Level 5.

Example 7

A kind of non-washing method of reactive dye dyeing, the steps are as follows:

(1) prepare the fabric to be dyed: the fabric to be dyed is a silk fabric;

(2) padding the mixed solution of sodium carbonate and sodium hydroxide to the fabric to be dyed, in the mixed solution, the concentration of sodium carbonate is 60g/l, the concentration of sodium hydroxide is 6g/l, the alkali-containing liquid rate during padding 50%;

(3) Carry out the first drying, the drying temperature is 60°C, and the drying time is 12 minutes;

(4) the fabric padding concentration after drying for the first time is 250 dyeing solutions of reactive red of 60g/l, the liquid band rate during padding is 82%, and the consumption of dyestuff is 5% of fabric weight;

(5) Carry out pre-drying treatment, the temperature of pre-drying is 45 ℃, time 2min, after pre-drying treatment, the moisture content on the fabric is 29% to fabric weight;

(6) putting the fabric after pre-drying treatment into a mixture of isooctane and dimethyl sulfoxide with a mass ratio of 1:1 at a temperature of 100°C for 102s, and then dyeing; the color fixation rate of reactive dyes on the fabric 97.09%;

(7) Carry out the second drying, the drying temperature is 60°C, and the drying time is 8h;

(8) the polydimethyldiallyl ammonium chloride finishing liquid that the fabric padding concentration after drying for the second time is 40g/l, pH value is 7, and the liquid carrying rate of fabric after padding is 87% ;

(9) Carry out baking to obtain dyed finished product, the temperature of baking is 170 ℃, the time of baking is 0.8min; The degree is 4~5 grades.

Example 8

A kind of non-washing method of reactive dye dyeing, the steps are as follows:

(1) prepare the fabric to be dyed: the fabric to be dyed is a silk fabric;

(2) padding the mixed solution of sodium carbonate and sodium hydroxide to the fabric to be dyed, in the mixed solution, the concentration of sodium carbonate is 55g/l, and the concentration of sodium hydroxide is 4.8g/l, the alkali-containing band liquid during padding The rate is 60%;

(3) Carry out the first drying, the drying temperature is 60°C, and the drying time is 15 minutes;

(4) the fabric padding concentration after drying for the first time is the reactive blue KE-2B dyeing solution of 55g/l, the liquid band rate during padding is 90%, and the consumption of dyestuff is 4.5% of fabric weight;

(5) Carry out pre-drying treatment, the temperature of pre-drying is 50 ℃, time 1min, after pre-drying treatment, the moisture content on the fabric is 30% to fabric weight;

(6) Putting the fabric after the pre-drying treatment into the isooctane with a temperature of 96°C for 130s and then dyeing; the color fixation rate of the reactive dye on the fabric is 98.1%;

(7) Carry out the second drying, the drying temperature is 60°C, and the drying time is 6.5h;

(8) the fabric padding concentration after drying for the second time is 40g/l, pH value is the nano-fixing agent TinokinVG finishing liquid of 7, the liquid carrying rate of fabric after padding is 93%;

(9) Carry out baking to obtain dyed finished product, the temperature of baking is 170 ℃, the time of baking is 0.5min; The degree is 4~5 grades.

Claims (9)

1. a kind of washing-free method of reactive dye dyeing is characterized in that: the fabric that fiber material is cellulose and/or protein is passed through padding lye, padding reactive dye dyeing solution, predrying, reactive dye and fabric successively The fibers are reacted in a non-aqueous solvent, padded with a color-fixing agent and baked to obtain a dyed product; After the pre-drying treatment, the moisture content on the fabric is less than or equal to 40% of the weight of the fabric; The dosage of reactive dyes is 0.5%~5% of the fabric weight; The reaction between the reactive dye and the fibers in the fabric in a non-aqueous solvent means that the pre-baked fabric is placed in a non-aqueous solvent with a temperature of 90-100°C for 35-130 seconds, and the color fixation rate of the reactive dye on the fabric is above 95; The non-aqueous solvent is a solvent that is immiscible with water and has no interaction with the reactive dye, and the boiling point of the non-aqueous solvent is above 100°C; The dry rubbing fastness of the dyed product is grade 5, the wet rubbing fastness is 3~4, and the washing fastness is 4~5. 2. the washing-free method of a kind of reactive dye dyeing according to claim 1, is characterized in that, the specific technological process that obtains dyed finished product is: padding lye---drying for the first time---dyeing padding reactive dye Liquid - pre-baking - dyeing in non-aqueous solvent - second drying - padding color fixing agent finishing liquid - baking - dyed finished product. 3. the washing-free method of a kind of reactive dye dyeing according to claim 2, is characterized in that, after described pre-drying treatment, the moisture content on the fabric is 20～40% to fabric weight. 4. the washing-free method of a kind of reactive dye dyeing according to claim 2, is characterized in that, described lye is the mixed solution of sodium carbonate and sodium hydroxide, and in described mixed solution, the concentration of sodium carbonate is 40g /l ~ 60g/l, the concentration of sodium hydroxide is 4g/l ~ 6g/l; The alkali carrying liquid rate during described padding lye is 50% ~ 70%, The concentration of the reactive dye dyeing solution is 5g/l～60g/l; the liquid carrying rate when padding the reactive dye dyeing solution is 50%～100%; The reactive dye is a reactive dye with 2 to 3 reactive groups. 5. the washing-free method of a kind of reactive dye dyeing according to claim 2, is characterized in that, the temperature of described pre-drying is 30～50 ℃, time 1～5min; The temperature of described drying for the first time is 60℃, the time is 10~15min; the temperature of the second drying is 60℃, the time is 4~8h; the temperature of the baking is 120℃~170℃, and the baking time is 0.5min~3min . 6. the washing-free method of a kind of reactive dye dyeing according to claim 1, is characterized in that, the raw material that described fabric adopts is more than one in cotton, viscose, silk and wool. 7. the washing-free method of a kind of reactive dye dyeing according to claim 1, is characterized in that, the concentration of color-fixing agent in described color-fixing agent finishing liquid is 20～40g/l, the pH of color-fixing agent finishing liquid The value is 5~7; the color fixing agent is pyridine quaternary ammonium salt, cetyl pyridinium quaternary ammonium chloride, dicyandiamide formaldehyde resin water-soluble initial shrinkage body, polyamine resin type formaldehyde-free color fixing agent, Quaternary ammonium salt type polycation color fixing agent, cationic water-based polyurethane type color fixing agent or nanometer color fixing agent; After the padding of the color-fixing agent finishing solution, the liquid-carrying rate of the fabric is 50% to 100% of the weight of the fabric components. 8 . The non-washing method for dyeing with reactive dyes according to claim 1 , wherein the viscosity of the non-aqueous solvent at 40° C. is lower than 30 mm ² /s. 9. the washing-free method of a kind of reactive dye dyeing according to claim 1, is characterized in that, described nonaqueous solvent is more than one in alkane, ether, sulfolane, dimethyl sulfoxide and siloxane; The alkane is isooctane or paraffin.