CN106978740A - One kind doping low-temperature anhydrous printing method of dyeing auxiliaries disperse dyes - Google Patents

Abstract

A kind of doping low-temperature anhydrous printing method of dyeing auxiliaries disperse dyes disclosed by the invention, including step 1：Prepare the stamp original paste of doping dyeing auxiliaries, step 2：Make Disperse Printing mill base, step 3, printing technology.Beneficial effects of the present invention, using dyeing auxiliaries, reduce the glass transition temperature of polyester fiber, the problem of solving high dyeing polyester fibers temperature and high dye dosage, polyester textile prints deep heavy colour with regard to that can reach effect on fabric is printed using low temperature, and without reduction cleaning, printing technology is novel, technological process is short, simple to operate.Disperse dyes print polyester textile, and printing technology low temperature, anhydrous, energy-saving and emission-reduction, temperature reduction about 30%, non-wastewater discharge belong to environmental protection technique, with certain economic benefit and market efficiency.

Description

A low-temperature waterless printing method of disperse dyes doped with dyeing aids

technical field

The invention belongs to the technical field of printing technology, and relates to a low-temperature waterless printing method of disperse dyes doped with dyeing assistants.

Background technique

Disperse dye printing pastes are printed under high-temperature steaming, hot-melt color development, and temperatures as high as 180°C. Post-press reduction cleaning and other washing processes cause high pollution and seriously affect the environment. The new methods currently used include printing methods such as disperse dye non-steaming and washing printing process, disperse dye direct printing process, etc. These two methods use paint printing process at high temperature to carry out styling and color development to reduce the washing process, but The printing process is still high temperature, there are problems such as staining and floating colors, and the printing process needs to be improved.

Contents of the invention

The purpose of the present invention is to provide a low-temperature waterless printing method of disperse dyes doped with dyeing assistants, and provide an environmentally friendly and energy-saving printing method that does not require reduction and cleaning of dye floating colors after printing.

The technical solution adopted in the present invention is a method for low-temperature waterless printing of disperse dyes doped with dyeing aids, comprising the following steps:

Step 1: Prepare printing paste doped with dyeing aids:

It consists of the following components by weight percentage: 5% to 15% of dyeing aid, 5% to 7% of paste, 0.5% to 1% of surfactant, 1% to 2% of color fixing agent, and the balance is deionized water , the sum of the mass percentages of the above-mentioned components is 100%, stir evenly, and obtain the original printing paste;

Step 2: Make disperse dye printing paste:

According to the mass percentage, it is composed of the following components: 3% to 5% of disperse dyes, 85% to 95% of original printing paste, 1% to 5% of H2O, and the sum of the mass percentages of the above components is 100%. Stir to obtain printing color paste ;

Step 3, printing process:

The polyester fabric to be printed is carried out pre-press setting, then the printing color paste that step 2 makes is printed polyester fabric on the rotary screen printing machine with the printing color paste that will make, and the fabric is pre-printed after printing. Drying, and finally the polyester fabric is shaped and colored, that is, the printing of the polyester fabric is completed.

The technical solution of the present invention is also characterized in that,

In step 1, the dyeing aid is any one of organic esters containing -OH groups and organic ketones containing -C=ketone groups.

In step 1, the paste material is any one of sodium alginate, modified starch, and acrylates.

In step 1, the surfactant is any one of OP-10, polyester, fatty alcohol polyoxyethylene ether, and polyoxyethylene ester.

In step 1, the color fixing agent is any one of aromatic aliphatic compounds and oxirane compounds.

In step 3, the pre-baking temperature is 110°C-130°C, and the pre-baking time is 60s-90s. It is 90s ~ 120s.

The time of stirring in step 1 is 30min.

The beneficial effects of the present invention are:

1. The use of dyeing aids reduces the glass transition temperature of polyester fibers, solves the problems of high-temperature dyeing of polyester fibers, high dye consumption, and dye floating and reduction cleaning after printing, and the main performance indicators of fabrics after printing are improved. .

2. Printing polyester fabrics at low temperature can achieve the effect of printing deep and thick colors on the fabrics, and no reduction cleaning is required. The printing technology is novel, the process flow is short, and the operation is simple.

3. Disperse dyes are used to print polyester fabrics. The printing process is low temperature, anhydrous, energy saving and emission reduction, the temperature is reduced by about 30%, and there is no waste water discharge. It is a green environmental protection process and has certain economic and market benefits.

Description of drawings

Figure 1 is a K/S diagram of the color depth of polyester fabric after printing at a setting temperature of 130°C in an embodiment of the low-temperature waterless printing method of disperse dyes doped with dyeing assistants of the present invention.

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

A method for low-temperature waterless printing of disperse dyes doped with dyeing assistants of the present invention comprises the following steps:

Step 1: Prepare printing paste doped with dyeing aids:

It consists of the following components by weight percentage: 5% to 15% of dyeing aid, 5% to 7% of paste, 0.5% to 1% of surfactant, 1% to 2% of color fixing agent, and the balance is deionized water , the sum of the mass percentages of the above-mentioned components is 100%, and the original printing paste is obtained by stirring evenly.

Wherein, the dyeing aid is any one of organic esters containing -OH groups and organic ketones containing -C=ketone groups. The paste is any one of sodium alginate, modified starch and acrylate. The surfactant is any one of op-10, polyester, fatty alcohol polyoxyethylene ether, and polyoxyethylene ester. The color fixing agent is any one of aromatic aliphatic compounds and oxirane compounds. Stirring time is 30min.

Step 2: Make disperse dye printing paste:

According to the mass percentage, it consists of the following components: 3% to 5% of disperse dyes, 85% to 95% of original printing paste, 1% to 5% of H ₂ O, the sum of the mass percentages of the above components is 100%. Color paste, wherein the amount of the original paste and water is determined according to the size of the printed pattern and the depth of the color.

Step 3, printing process:

The polyester fabric to be printed is subjected to pre-press setting, the setting temperature is 130°C-150°C, and the setting time is 90s-120s, so as to ensure that the surface of the fabric is wrinkle-free, and then the printing paste prepared in step 2 is used in the preparation Print the polyester fabric with the obtained printing color paste on a rotary screen printing machine, and pre-dry the fabric after printing, wherein the pre-drying temperature is 110°C-130°C, and the pre-drying time is 60s-90s, and finally the polyester fabric is Styling and color development, the setting temperature is 130 ℃ ~ 150 ℃, and the setting time is 90s ~ 120s, that is, the printing of polyester fabric is completed.

Finally, the physical properties of the printed polyester fabrics were tested.

Example 1

Step 1, prepare the original printing paste doped with dyeing assistants:

Add a certain amount of deionized water to dyeing aids, pastes, surfactants, and auxiliary agents respectively, and stir evenly to obtain the original printing paste;

Weigh or pipette the following raw materials according to mass percentage: dyeing aid 5%, paste 4%, surfactant 0.5%, color fixing agent 1%, the balance is deionized water, the sum of the mass percentages of the above components It is 100%; mix and stir the weighed or pipetted raw materials at room temperature for 30 minutes to make them evenly mixed to obtain the original printing paste. Among them, the dyeing assistant is an organic ester containing -OH group, the paste is acrylic ester, the surfactant is op-10, and the color fixing agent is an aromatic lipid compound.

Step 2 Make disperse dye printing paste:

Grind the disperse dyes and add them to the original printing paste according to a certain mass ratio, and stir well to obtain the printing paste;

The mass percentage of disperse dye and raw paste is: 3% of disperse dye, 95% of raw paste, H ₂ O 1% to 5%, the sum of the mass percentages of the above components is 100%, the amount of raw paste and water depends on the size of the printed pattern , The color depth is determined.

Step 3, printing process:

The polyester fabric to be printed is carried out pre-press setting, then the printing color paste that step 2 makes is printed polyester fabric on the rotary screen printing machine with the printing color paste that will make, and the fabric is pre-printed after printing. Drying, and finally the polyester fabric is shaped and colored, that is, the printing of the polyester fabric is completed.

Wherein, the pre-baking temperature in step 3 is 110°C, the pre-baking time is 90s, the setting temperature in step 3 is 130°C, and the setting time is 90s;

Step 3.1, the polyester fabric is subjected to pre-press setting, the setting temperature is 130°C, and the time is 60s to ensure that the surface of the fabric is wrinkle-free;

Step 3.2, use the printing paste prepared in step 2 to print polyester fabric on a rotary screen printing machine, pre-dry the fabric after printing, the pre-drying temperature is 110 ° C, the pre-drying time is 90s, and then the polyester The fabric is shaped and colored, the setting temperature is 130°C, and the setting time is 90s, that is, the printing of the polyester fabric is completed.

After printing, the dry and wet rubbing fastness of the polyester fabric are 3.5 and above, 2.5 and above respectively.

Example 2

Step 1, prepare the original printing paste doped with dyeing assistants:

Add a certain amount of deionized water to dyeing aids, pastes, surfactants, and auxiliary agents respectively, and stir evenly to obtain the original printing paste;

Weigh or pipette the following raw materials according to mass percentage: dyeing aid 7.5%, paste 4.5%, surfactant 1%, color fixing agent 1%, the balance is deionized water, the sum of the mass percentages of the above components It is 100%; mix and stir the weighed or pipetted raw materials at room temperature for 30 minutes to make them evenly mixed to obtain the original printing paste.

Among them, the dyeing assistant is organic ketones containing -C=ketone group, the paste is sodium alginate, the surfactant is fatty alcohol polyoxyethylene ether, and the color fixing agent is ethylene oxide compounds.

Step 2 Make disperse dye printing paste:

Grind the disperse dyes and add them to the original printing paste according to a certain mass ratio, and stir well to obtain the printing paste;

The mass percentage of disperse dyes and raw paste is: 4% of disperse dyes, 90% of raw paste, H ₂ O 1% to 5%, the sum of the mass percentages of the above components is 100%, and the amount of raw paste and water depends on the size of the printed pattern , The color depth is determined.

Step 3, printing process:

The polyester fabric to be printed is carried out pre-press setting, then the printing color paste that step 2 makes is printed polyester fabric on the rotary screen printing machine with the printing color paste that will make, and the fabric is pre-printed after printing. Drying, and finally the polyester fabric is shaped and colored, that is, the printing of the polyester fabric is completed.

Wherein, the pre-baking temperature in step 3 is 120°C, the pre-baking time is 75s, the setting temperature in step 3 is 130°C, and the setting time is 120s;

Step 3.1, the polyester fabric is subjected to pre-press setting, the setting temperature is 130°C, and the time is 60s to ensure that the surface of the fabric is wrinkle-free;

Step 3.2, use the printing paste prepared in step 2 to print polyester fabric on a rotary screen printing machine, pre-dry the fabric after printing, the pre-drying temperature is 130 ° C, the pre-drying time is 75s, and then the polyester fabric The fabric is shaped and colored, the setting temperature is 130°C, and the setting time is 120s, that is, the printing of the polyester fabric is completed.

After printing, the dry and wet rubbing fastnesses of the polyester fabric are grade 3.5 and above and grade 3 and above respectively.

Example 3

Step 1, prepare the original printing paste doped with dyeing assistants:

Add a certain amount of deionized water to dyeing aids, pastes, surfactants, and auxiliary agents respectively, and stir evenly to obtain the original printing paste;

Weigh or pipette the following raw materials according to mass percentage: dyeing aid 9%, paste 6%, surfactant 61%, color fixing agent 1.5%, the balance is deionized water, the sum of the mass percentages of the above components It is 100%; mix and stir the weighed or pipetted raw materials at room temperature for 30 minutes to make them evenly combined to obtain the original paste for printing.

Wherein, the dyeing assistant is any one of organic esters and paste acrylates containing -OH groups;

Surfactant is op-10, color fixing agent is aromatic lipid compound.

Step 2 Make disperse dye printing paste:

Grind the disperse dyes and add them to the original printing paste according to a certain mass ratio, and stir well to obtain the printing paste;

The mass percentage of disperse dye and raw paste is: 3% of disperse dye, 90% of raw paste, H ₂ O 1%-5%, the sum of the mass percentages of the above components is 100%, the amount of raw paste and water depends on the size of the printed pattern , The color depth is determined.

Step 3, printing process:

The polyester fabric to be printed is carried out pre-press setting, then the printing color paste that step 2 makes is printed polyester fabric on the rotary screen printing machine with the printing color paste that will make, and the fabric is pre-printed after printing. Drying, and finally the polyester fabric is shaped and colored, that is, the printing of the polyester fabric is completed.

Wherein, the pre-baking temperature in step 3 is 110°C, the pre-baking time is 90s, the setting temperature in step 3 is 140°C, and the setting time is 120s;

Step 3.1, the polyester fabric is subjected to pre-press setting, the setting temperature is 110°C, and the time is 90s to ensure that the surface of the fabric is wrinkle-free;

Step 3.2, use the printing paste prepared in step 2 to print polyester fabric on a rotary screen printing machine, pre-dry the fabric after printing, the pre-drying temperature is 110 ° C, the pre-drying time is 90s, and then the polyester The fabric is shaped and colored, the setting temperature is 140°C, and the setting time is 120s, that is, the printing of the polyester fabric is completed.

The physical properties of the printed polyester fabric were tested, and it was found that the dry rubbing fastness of the polyester fabric was 4 grades and above, and the wet rubbing fastness was 3 grades and above.

Example 4

Step 1, prepare the original printing paste doped with dyeing assistants:

Add a certain amount of deionized water to dyeing aids, pastes, surfactants, and auxiliary agents respectively, and stir evenly to obtain the original printing paste;

Weigh or pipette the following raw materials according to mass percentage: dyeing aid 10%, paste 6%, surfactant 1%, color fixing agent 2%, the balance is deionized water, the sum of the mass percentages of the above components It is 100%; mix and stir the weighed or pipetted raw materials at room temperature for 30 minutes to make them evenly combined to obtain the original paste for printing.

Among them, the dyeing assistant is an organic ketone containing -C=ketone group, the paste is an acrylic ester, the surfactant is op-10, and the color fixing agent is an aromatic lipid compound.

Step 2 Make disperse dye printing paste:

Grind the disperse dyes and add them to the original printing paste according to a certain mass ratio, and stir well to obtain the printing paste;

The mass percentage of disperse dye and raw paste is: 3% of disperse dye, 95% of raw paste, H ₂ O 1% to 5%, the sum of the mass percentages of the above components is 100%, the amount of raw paste and water depends on the size of the printed pattern , The color depth is determined.

Step 3, printing process:

The polyester fabric to be printed is carried out pre-press setting, then the printing color paste that step 2 makes is printed polyester fabric on the rotary screen printing machine with the printing color paste that will make, and the fabric is pre-printed after printing. Drying, and finally the polyester fabric is shaped and colored, that is, the printing of the polyester fabric is completed.

Wherein, the pre-baking temperature in step 3 is 110°C, the pre-baking time is 90s, the setting temperature in step 3 is 150°C, and the setting time is 90s;

Step 3.1, the polyester fabric is subjected to pre-press setting, the setting temperature is 110°C, and the time is 60s to ensure that the surface of the fabric is wrinkle-free;

Step 3.2, use the printing paste prepared in step 2 to print polyester fabric on a rotary screen printing machine, pre-dry the fabric after printing, the pre-drying temperature is 110 ° C, the pre-drying time is 90s, and then the polyester The fabric is shaped and colored, the setting temperature is 150°C, and the setting time is 90s, that is, the printing of the polyester fabric is completed.

The physical properties of the printed polyester fabric were tested, and it was found that the dry rubbing fastness of the polyester fabric was 4 grades and above, and the wet rubbing fastness was 3 grades and above.

Example 5

Step 1, prepare the original printing paste doped with dyeing assistants:

Add a certain amount of deionized water to dyeing aids, pastes, surfactants, and auxiliary agents respectively, and stir evenly to obtain the original printing paste;

Weigh or pipette the following raw materials according to mass percentage: dyeing aid 10%, paste 5%, surfactant 1%, color fixing agent 1%, the balance is deionized water, the sum of the mass percentages of the above components It is 100%; mix and stir the weighed or pipetted raw materials at room temperature for 30 minutes to make them evenly combined to obtain the original paste for printing.

Among them, the dyeing assistant is an organic ketone containing -C=ketone group, the paste is an acrylic ester, the surfactant is op-10, and the color fixing agent is an aromatic lipid compound.

Step 2 Make disperse dye printing paste:

Grind the disperse dyes and add them to the original printing paste according to a certain mass ratio, and stir well to obtain the printing paste;

The mass percentage of disperse dye and raw paste is: 3% of disperse dye, 95% of raw paste, H ₂ O 1% to 5%, the sum of the mass percentages of the above components is 100%, the amount of raw paste and water depends on the size of the printed pattern , The color depth is determined.

Step 3, printing process:

The polyester fabric to be printed is carried out pre-press setting, then the printing color paste that step 2 makes is printed polyester fabric on the rotary screen printing machine with the printing color paste that will make, and the fabric is pre-printed after printing. Drying, and finally the polyester fabric is shaped and colored, that is, the printing of the polyester fabric is completed.

Wherein, the pre-baking temperature in step 3 is 110°C, the pre-baking time is 90s, the setting temperature in step 3 is 130°C, and the setting time is 120s;

Step 3.1, the polyester fabric is subjected to pre-press setting, the setting temperature is 110°C, and the time is 60s to ensure that the surface of the fabric is wrinkle-free;

Step 3.2, use the printing paste prepared in step 2 to print polyester fabric on a rotary screen printing machine, pre-dry the fabric after printing, the pre-drying temperature is 110 ° C, the pre-drying time is 90s, and then the polyester The fabric is shaped and colored, the setting temperature is 130°C, and the setting time is 120s, that is, the printing of the polyester fabric is completed.

The physical properties of the printed polyester fabric were tested, and it was found that the dry rubbing fastness and wet rubbing fastness of the polyester fabric were dry rubbing grade 4 and above respectively.

The effect of setting temperature on the dry rubbing fastness and wet rubbing fastness of polyester fabric after printing by this process and traditional process, as shown in Table 1,

According to Table 1, it can be seen that the wet and dry rubbing fastness of the new process is better than that of the traditional process. The main reason is that the new process uses dyeing aids that can increase the dyeing depth, which makes the fiber macromolecular chains wriggle and instantly produces pores. , The dye enters the interior of the fiber, making the fabric darker.

The influence of setting temperature and setting time on the dry rubbing fastness and wet rubbing fastness of polyester fabric after printing in this process, as shown in Table 2,

According to Table 2, it can be seen that the dry and wet rubbing fastness of polyester fabrics printed at different setting temperatures and different setting times are different. As the temperature increases and the setting time increases, the dry rubbing and wet rubbing fastnesses both increase. In particular, time has a greater impact, and the time is best when the time is 120s.

The setting temperature is 130°C and the color depth K/S diagram of the polyester fabric after printing is shown in Figure 1. Red 1 to 4 are respectively 3% of the dye concentration, 7.5% of the dyeing aid concentration of red 1 and 7.5% of red 2. 9%, Red 3 is 0%, and Red 4 is 10%. It can be seen from the figure that different concentrations of dyeing aids have an impact on the printing depth of polyester fabrics. When the concentration reaches a certain amount of 10%, the printing depth K/ The S value is the largest, and the printing depth K/S decreases with the increase of the amount of dyeing auxiliaries. The main reason is that the increase of the dyeing auxiliaries concentration has an analytical effect on the dye, which is not conducive to dyeing.

In summary, the physical properties of the printed polyester fabric were tested, and it was found that the dry rubbing fastness of the polyester fabric was 4 grades and above, and the wet rubbing fastness was 3 grades and above; the color depth and the traditional process were 30% less than the amount of dye. 40%.

In addition, the dyeing assistant can lower the glass transition temperature of the fiber, loose the macromolecular structure, and allow the dye to enter the interior of the fiber to achieve low-temperature color development; adding surfactants can change the interfacial tension of the fiber, making it easier for the dye to be dyed to the fiber through adsorption and diffusion. superior.

The purpose of the present invention is to provide a method for low-temperature waterless printing of disperse dyes doped with dyeing aids, which solves the problems that polyester fibers need to be printed and developed at high temperatures, reduce the amount of dyes used, and the problems of dye floating and cleaning after printing , The dry and wet rubbing fastness indicators of the main properties of the printed fabric have been improved. Comparing the dry and wet rubbing fastness of the polyester fabric printed by this process with the traditional process, it can be seen that the polyester fabric printed by this process has good color fastness, no fading and bright colors. This process realizes the printing of disperse dyes on polyester fabrics at low temperature, and the printing effect is better than that of traditional printing processes, with good color fastness, low temperature water saving and dye saving. Disperse dyes are used to print polyester fabrics. The printing process is low-temperature, anhydrous, energy-saving and emission-reducing, the temperature is reduced by about 30%, and there is no waste water discharge. It is a green environmental protection process and has certain economic and market benefits.

Claims (7)

1. one kind doping low-temperature anhydrous printing method of dyeing auxiliaries disperse dyes, it is characterised in that comprise the following steps：

Step 1：Prepare the stamp original paste of doping dyeing auxiliaries：

It is composed of the following components by weight percentage：Dyeing auxiliaries 5%~15%, thickener 5%~7%, surfactant 0.5%~ 1%th, color fixing agent 1%~2%, surplus is deionized water, and above-mentioned each component mass percent sum is 100%, by above component Stir, that is, obtain stamp original paste；

Step 2：Make Disperse Printing mill base：

It is composed of the following components by mass percentage：Disperse dyes 3%~5%, 85%~95%, H of stamp original paste₂O 1%~ 5%, above constituent mass percentage sum is 100%, and above component is stirred, print paste is both obtained；

Step 3, printing technology：

Polyester textile to be printed is carried out to print preceding sizing, then printed print paste made from step 2 on circular screen printer Polyester textile processed, preliminary drying is carried out after printing to fabric, is finally carried out sizing color development to polyester textile, that is, is completed to polyester textile Stamp.

2. a kind of doping low-temperature anhydrous printing method of dyeing auxiliaries disperse dyes according to claim 1, it is characterised in that step Dyeing auxiliaries described in rapid 1 is any one of the organic ester containing-OH bases, the organic ketone containing-C=ketone groups.

3. a kind of doping low-temperature anhydrous printing method of dyeing auxiliaries disperse dyes according to claim 1, it is characterised in that step Thickener described in rapid 1 is any one in sodium alginate, modified starch, esters of acrylic acid.

4. a kind of doping low-temperature anhydrous printing method of dyeing auxiliaries disperse dyes according to claim 1, it is characterised in that step Surfactant described in rapid 1 is any one of op-10, polyester, AEO, polyoxyethylene ester.

5. a kind of doping low-temperature anhydrous printing method of dyeing auxiliaries disperse dyes according to claim 1, it is characterised in that step Color fixing agent described in rapid 1 is any one of aromatic series lipoid substance, oxirane compound.

6. a kind of doping low-temperature anhydrous printing method of dyeing auxiliaries disperse dyes according to any one in claim 2~5, Characterized in that, preliminary drying temperature described in step 3 is 110 DEG C~130 DEG C, preliminary drying time is 60s~90s, and print is preceding to shape and fixed The setting temperature of type color development is 130 DEG C~150 DEG C, and the shaping time of sizing and sizing color development is 90s~120s before print.

7. a kind of doping low-temperature anhydrous printing method of dyeing auxiliaries disperse dyes according to claim 6, it is characterised in that step The time stirred described in rapid 1 is 30min.