CN111286231B - Environment-friendly water-based ink for fabric and preparation method thereof - Google Patents

Abstract

The invention relates to the technical field of ink, in particular to environment-friendly water-based ink for fabrics and a preparation method thereof. The paint comprises the following components in parts by weight: 5-35 parts of dye, 0.1-10 parts of methyl cellulose, 0.5-1 part of ethyl cellulose, 0.1-2 parts of wetting dispersant, 1-5 parts of defoaming agent and 40-70 parts of water. The environment-friendly water-based ink is prepared by adopting the dye, the wetting dispersant, the methyl cellulose, the ethyl cellulose, the assistant, the defoamer and the water, and the water is used as the solvent, so that the cost is low, the environment is protected, no pollution is caused, the stability of the prepared environment-friendly water-based ink is good, the environment-friendly water-based ink can be widely applied to printing and dyeing of fabrics, and the printing and dyeing quality and the color fastness are high. In addition, the environment-friendly water-based ink prepared by the invention has no waste water discharge and no pollution in the whole process of textile printing and dyeing, and the used printing and dyeing ink can be reused.

Description

Environment-friendly water-based ink for fabric and preparation method thereof

Technical Field

The invention relates to the technical field of ink, in particular to environment-friendly water-based ink for fabric and a preparation method thereof.

Background

The printing and dyeing is also called dyeing and finishing, and is a processing mode, and is also a general name of pretreatment, dyeing, printing, after finishing, washing and the like; inks used for textile printing and dyeing are classified into solvent-based inks, which have a water-insoluble solvent as a main component for dissolving a colorant, and water-based inks, wherein the colorant may be a pigment or a dye. Solvent-based inks are typically comprised of components such as colorants, solvents, surfactants, humectants, pH adjusters, driers, metal ion chelators, preservatives, and other additives. Although solvent-based inks have a strong adaptability, some of the solvents tend to dry and roughen the skin over long-term contact. The drying mode is volatile drying, the content of VOC is more, the problems of air pollution and the like can be caused, a small part of VOC can remain in printed matters, and the pollution is very harmful to the environment and the human health.

The water-based ink mainly uses water (some of which are added with a small amount of alcohol) as a solvent, and has the advantages of high brightness, strong tinting strength, strong adhesion after printing and dyeing, adjustable drying speed, strong water resistance and the like. Compared with other inks, the water-based ink does not contain volatile toxic organic solvents, so that the water-based ink has no adverse effect on the health of operators in the printing and dyeing process, and has no pollution to the atmospheric environment and the printed and dyed products. Because the ink has the characteristic of non-flammability, the hidden danger of flammability and explosiveness can be eliminated, the printing and dyeing working environment is improved, and the safe production is facilitated.

There is a need to provide an aqueous ink having good printing properties for specific fabrics (e.g., polyester).

Disclosure of Invention

In order to solve the above problems, a first aspect of the present invention provides an environmentally friendly aqueous ink for textile fabrics, comprising the following components in parts by weight:

dye: 5-35 parts;

methyl cellulose: 0.1-10 parts;

ethyl cellulose: 0.5-1 part;

wetting and dispersing agent: 0.1-2 parts;

defoaming agent: 1-5 parts;

water: 40-70 parts.

As a preferred technical scheme, the wetting dispersant comprises an anionic surfactant and/or a nonionic surfactant.

As a preferred technical scheme, the wetting dispersant comprises acrylate copolymer.

As a preferred technical solution, the wetting dispersant is BYK2015 and BYK2013.

As a preferable technical scheme, the weight ratio of BYK2015 to BYK2013 is (2-4): 1.

as a preferable technical solution, the weight ratio of BYK2015 to BYK2013 is 2.5:1.

as a preferred technical solution, it is proposed that, the defoaming agent is at least one of a silicone defoaming agent, a polyether modified silicone defoaming agent and a polyether nonionic defoaming agent.

As a preferable technical scheme, the environment-friendly water-based ink also comprises 0-0.1 part by weight of an auxiliary agent.

In a preferred embodiment, the auxiliary agent is at least one selected from an antioxidant, a heat stabilizer, a flame retardant, an inorganic filler, and an antibacterial agent.

The second aspect of the invention provides a preparation method of environment-friendly water-based ink for fabrics, which comprises the following steps:

(1) Adding the wetting dispersant and water into a stirring kettle, and adding a dye at the rotating speed of 300-500r/min to obtain a mixture;

(2) Adding the mixture into a sand mill, grinding for 2-4h at the rotating speed of 1500-2000r/min, then adding methyl cellulose, ethyl cellulose and defoaming agent, and stirring for 20-30min to obtain the product.

Has the advantages that:

the environment-friendly water-based ink is prepared by adopting the dye, the wetting dispersant, the methyl cellulose, the ethyl cellulose, the defoaming agent and the water, the water is used as the solvent, the cost is low, the environment is protected, no pollution is caused, the stability of the prepared environment-friendly water-based ink is good, the environment-friendly water-based ink can be widely applied to textile printing and dyeing, the printing and dyeing quality is high, and the color fastness is high. In addition, the environment-friendly water-based ink prepared by the invention has no waste water discharge and no pollution in the whole process of textile printing and dyeing, and the used printing and dyeing ink can be reused.

The environment-friendly water-based ink is mainly used for polyester fabrics, changes the original fabric dyeing process, and achieves the purposes of less process, high benefit, energy conservation, water conservation, zero discharge, zero sewage and the like from the original dye vat, along with time consumption, energy consumption, more water consumption, high discharge and serious pollution; in the printing process, the flat screen and the rotary screen are operated according to the original disperse dye printing process, evaporation and washing are not needed, zero sewage discharge is achieved, the process flow is shortened, and the benefit is high.

Detailed Description

The technical features in the technical solutions provided by the present invention are further clearly and completely described below with reference to the specific embodiments, but the scope of protection of the present invention is not limited thereto.

"preferred", "more preferred", and the like, in the present invention, refer to embodiments of the invention that may provide certain benefits, under certain circumstances. However, other embodiments may be preferred, under the same or other circumstances. Furthermore, the recitation of one or more preferred embodiments does not imply that other embodiments are not useful, nor is it intended to exclude other embodiments from the scope of the invention.

The invention provides an environment-friendly water-based ink for fabrics, which comprises the following components in parts by weight:

dye: 5-35 parts;

methyl cellulose: 0.1-10 parts;

ethyl cellulose: 0.5-1 part;

wetting and dispersing agent: 0.1-2 parts;

defoaming agent: 1-5 parts;

water: 40-70 parts.

In a preferred embodiment, the environment-friendly aqueous ink comprises the following components in parts by weight:

dye: 20 parts of (1);

methyl cellulose: 5 parts of a mixture;

ethyl cellulose: 0.8 part;

wetting and dispersing agent: 1 part;

defoaming agent: 2 parts of (1);

water: and 55 parts.

Dye material

Dyes are organic compounds that give other materials a vivid and strong hue, and are also called synthetic dyes because pigments used at present are artificially synthesized. Dyes and pigments are generally compounds which are inherently coloured and which are capable of giving other substances a vivid and strong shade in the molecular or dispersed state.

In one embodiment of the method of the present invention, the dye is selected from disperse red 97, disperse blue 257, disperse orange 30, disperse orange 44, disperse red 98, disperse red 134, disperse blue 93, disperse red 107, disperse violet 33, disperse blue 79, disperse orange 61, disperse blue A, disperse red 206, disperse violet 77, disperse red 73, disperse orange 76, disperse blue 134, disperse blue 27, disperse red 73, disperse orange 29, disperse blue 77, disperse brown 1, disperse red 135, disperse red 82, disperse orange 25, disperse yellow 232, disperse orange 73, disperse blue 165, disperse blue 291G, disperse violet 93, disperse blue 291, disperse red 177, disperse red 152, disperse red 153, disperse red 97, disperse blue 257, disperse red 191, disperse blue 301, disperse blue 333, disperse red 184 dispersed red 359, dispersed red RLZ, dispersed blue 367, dispersed blue a, dispersed red 206, dispersed violet 77, dispersed red 72, dispersed orange 3, dispersed yellow M-FL, dispersed blue CR, dispersed violet 63, dispersed orange 29, dispersed yellow 54, dispersed violet 26, dispersed blue 102, dispersed red 91, dispersed red 2B, dispersed yellow 104, dispersed yellow 79, dispersed red 343, dispersed red 167, dispersed yellow 7903, dispersed blue H-BGL, dispersed red P-4G, dispersed orange 3, dispersed yellow M-FL, dispersed red 74, dispersed orange 31, dispersed red 127, dispersed yellow 163, dispersed red 92, dispersed violet 77, dispersed blue 359, dispersed red 60, dispersed blue 56, dispersed blue 14, dispersed blue 60, dispersed green 9.

In a preferred embodiment, the dye is selected from at least one of disperse blue 359, disperse red 60, disperse yellow 54, disperse blue 56, disperse blue 14, disperse blue 60, disperse orange 25, disperse violet 93, and disperse green 9.

The dye mainly contains hydrophobic groups in the molecules, so that the solubility in water is low; particularly when a plurality of dyes are mixed, hydrophobic groups in dye molecules interact with each other to enable the dye molecules to be easily aggregated into macromolecules, so that the dispersion stability of the dyes in an aqueous solution is influenced.

Methyl cellulose

The methyl cellulose is commonly used in printing and dyeing ink and is commercially available, and the purchasing merchants include but are not limited to Lao, ruita, jersey and Bailingwei.

Ethyl cellulose

The ethyl cellulose is ethyl cellulose commonly used in printing and dyeing ink, and is sold in markets, and purchasing merchants include, but are not limited to, ruita, bailingwei, BYK and Jacobs.

Wetting and dispersing agent

The wetting and dispersing agent comprises an anionic surfactant and/or a nonionic surfactant.

In a preferred embodiment, the wetting and dispersing agent comprises an acrylate copolymer.

The vendors of such wetting and dispersing agents include, but are not limited to, basf, nosapor, perlition, BYK.

In a more preferred embodiment, the wetting dispersant is BYK2015 and BYK2013.

The manufacturer of BYK2015 and BYK2013 is BYK-Chemie GmbH.

In a preferred embodiment, the weight ratio of BYK2015 to BYK2013 is (2-4): 1.

in a more preferred embodiment, the weight ratio of BYK2015 to BYK2013 is 2.5:1.

the applicant has found that when the wetting and dispersing agent comprises an acrylate copolymer, the dispersion of the dye in water is improved; particularly, when the wetting dispersant is BYK2015 and BYK2013, the particle size change of the ink after high-speed centrifugation is controlled within 8%, the surmised reason is that BYK2015 is an acrylate copolymer controllably polymerized by CPT and contains a water/dye compatible group and an anchoring group, the dye can be wetted and firmly adsorbed on the surface of the dye, and due to balanced product polarity and 100% conveying form of BYK2013, the wetting dispersant and BYK2015 can be tightly and firmly combined with the dye even under the action of strong centrifugation through interaction of an active group, steric hindrance and the like, particularly, the weight ratio of the German BYK2015 to the BYK2013 is 2.5:1, the particle size change of the ink after high-speed centrifugation is controlled within 5 percent.

Defoaming agent

The antifoaming agent is a substance capable of reducing the surface tension of water, a solution, a suspension, or the like, preventing the formation of foam, or reducing or eliminating the original foam.

In a preferred embodiment, the defoaming agent is selected from at least one of a silicone-based defoaming agent, a polyether-modified silicone defoaming agent, and a polyether-based nonionic defoaming agent.

The purchasing manufacturer of the defoamer includes but is not limited to BYK, basff.

In a preferred embodiment, the antifoaming agent is selected from at least one of DF-100, DF-200, DF-300, BYK-011, BYK-012, BYK-014, BYK-015, BYK-016, BYK-017, BYK-018, BYK-019, BYK-1710, BYK-1711, BYK-1719, BYK-1723, BYK-1724, BYK-1730, BYK-1740, BYK-1752, BYK-1770, BYK-1780, BYK-1785, BYK-1790, BYK-1791, BYK-1794, BYK-1798, EFKA-2010, EFKA-2018N, EFKA-2020, EFKA-2021N, EFKA-2022, and EFKA-2023N.

In a preferred embodiment, the defoamer is a polyether modified silicone defoamer.

In a more preferred embodiment, the defoamer is DF-100.

The applicant has found that the choice of an antifoaming agent for DF-100 also improves the stability of the ink to a certain extent, presumably because DF-100 is able to enter the vacancies of the micelles, thus making the micelles more compact and robust.

DF-100 was purchased from Bobon chemical, guangzhou.

The second aspect of the invention provides a preparation method of environment-friendly water-based ink for fabrics, which comprises the following steps:

(1) Adding the wetting dispersant and water into a stirring kettle, and adding the dye at the rotating speed of 300-500r/min to obtain a mixture;

(2) Adding the mixture into a sand mill, grinding for 2-4h at the rotating speed of 1500-2000r/min, then adding methyl cellulose, ethyl cellulose and a defoaming agent, and stirring for 20-30min to obtain the product.

The environment-friendly water-based ink prepared by the invention can be applied to printing and dyeing of fabrics, and particularly, the environment-friendly water-based ink is applied to printing and dyeing of polyester fabrics.

In a preferred embodiment, the textile printing comprises the following steps: and (3) putting the fabric into the environment-friendly water-based ink disclosed by the invention, soaking for 1-30min, then rolling, taking out, drying, and carrying out high-temperature dehumidification to finish dyeing.

The water-based ink after dyeing can be used for the second time, no dyeing wastewater is discharged in the whole dyeing process, the standard of zero wastewater discharge is achieved, and the surrounding environment is not polluted. The application adopts water as the solvent to prepare the water-based ink, so that the environmental protection and no pollution are really realized, the cost is saved, and the prepared water-based ink has a better printing and dyeing effect.

The environment-friendly water-based ink can also be applied to fabric printing, the printing is local coloring, and the printing process is particularly concerned to prevent dye liquor from permeating and ensure clear and fine patterns; specifically, a thickening agent is added to the original environment-friendly water-based ink, and a flat screen, a rotary screen and the like are used for printing.

The terylene is hydrophobic fiber, has small cohesive force to ink drops, and is pretreated before printing and dyeing, and the preferable treatment mode is as follows: placing the polyester fabric in 10-25% sodium hydroxide aqueous solution by mass percent, and placing for 0.5-1 hour at 80-100 ℃. The terylene is treated by sodium hydroxide aqueous solution, so that molecules on the surface of the terylene fiber are peeled off, and countless pits which are randomly distributed are formed on the surface of the fiber, thereby being beneficial to mechanical engagement between the fiber and resin; meanwhile, ester bonds in the polyester macromolecular chains are hydrolyzed to generate terephthalate and glycol, so that polar groups on the surface of the polyester fiber are increased.

Auxiliary agent

In order to improve the using effect of the ink, the environment-friendly water-based ink also comprises 0-0.1 part by weight of an auxiliary agent; preferably, the weight part of the auxiliary agent is not 0. In a more preferred embodiment, the auxiliary agent is at least one selected from the group consisting of an antioxidant, a heat stabilizer, a flame retardant, an inorganic filler, and an antibacterial agent.

Examples of the antioxidant include, but are not limited to, phenol-based antioxidants, phosphorus-based antioxidants, sulfur-based antioxidants, and the like.

Examples of the heat stabilizer include, but are not limited to, hindered amines, epoxides, phosphates, and the like.

Examples of the flame retardant include, but are not limited to, bromine-containing organic flame retardants, phosphoric acid flame retardants, antimony trioxide, magnesium hydroxide, red phosphorus, and the like.

Examples of inorganic fillers include, but are not limited to, talc, mica, clay, calcium carbonate, aluminum hydroxide, magnesium hydroxide, barium sulfate, glass fiber, carbon fiber, silica, titanium dioxide, calcium silicate, potassium titanate, silica lime, silica sol, and the like.

Examples of the antibacterial agent include, but are not limited to, silver antibacterial agents, quaternary ammonium salt antibacterial agents.

In a preferred embodiment, the auxiliary agent is an inorganic filler selected from at least one of talc, mica, clay, calcium carbonate, aluminum hydroxide, magnesium hydroxide, barium sulfate, glass fiber, carbon fiber, silica, titanium dioxide, calcium silicate, potassium titanate, silica lime, and silica sol.

In a more preferred embodiment, the adjuvant is a silica sol.

The silica sol was purchased from Hangzhou Zhi Ti purification technologies, inc.

In a preferred embodiment, the method for preparing the environmentally friendly aqueous ink comprises the following steps:

(1) Adding the wetting dispersant and water into a stirring kettle, and adding the dye at the rotating speed of 300-500r/min to obtain a mixture;

(2) Adding the mixture into a sand mill, grinding for 2-4h at the rotating speed of 1500-2000r/min, then adding methyl cellulose, ethyl cellulose, an auxiliary agent and a defoaming agent, and stirring for 20-30min to obtain the product.

After the terylene is printed and dyed, if the terylene needs to be subjected to high-temperature setting in the later period, the setting temperature is usually higher than the glass transition temperature of the terylene, so that the color fastness is reduced; probably because the silicon dioxide sol is a dispersion liquid of nano-scale silicon dioxide particles in water, after the polyester fabric is subjected to alkali treatment and then is subjected to printing and dyeing, stronger interface interaction is established between the silicon dioxide sol and polar groups of the polyester fabric, and the movement of polyester molecular chains is reduced, so that the polyester fabric still keeps higher color fastness after high-temperature setting.

Hereinafter, the present invention will be described in more detail by way of examples, but it should be understood that these examples are merely illustrative and not restrictive. In addition, all the raw materials are commercially available if not particularly limited.

Examples

Example 1

The embodiment 1 of the invention provides environment-friendly water-based ink for fabrics, which comprises the following components in parts by weight:

dye: 20 parts of (1);

methyl cellulose: 5 parts of a mixture;

ethyl cellulose: 0.8 part;

wetting and dispersing agent: 1 part;

defoaming agent: 2 parts of a mixture;

water: and 55 parts.

The dye is disperse blue 359.

The wetting and dispersing agents are germany BYK2015 and BYK2013.

The weight ratio of the German BYK2015 to the BYK2013 is 2.5:1.

the defoaming agent is DF-100.

The embodiment 1 of the invention also provides a preparation method of the environment-friendly water-based ink for the fabric, which comprises the following steps:

(1) Adding the wetting dispersant and water into a stirring kettle, and adding a dye at a rotating speed of 400r/min to obtain a mixture;

(2) Adding the mixture into a sand mill, grinding for 3h at the rotating speed of 1800r/min, then adding methyl cellulose, ethyl cellulose and a defoaming agent, and stirring for 25min to obtain the product.

Example 2

The embodiment 2 of the invention provides environment-friendly water-based ink for fabrics, which comprises the following components in parts by weight:

dye: 5 parts of a mixture;

methyl cellulose: 0.1 part;

ethyl cellulose: 0.5 part;

wetting and dispersing agent: 0.1 part;

defoaming agent: 1 part;

water: 40 parts of the components.

The dye is disperse red 60.

The wetting and dispersing agents are Germany BYK2015 and BYK2013.

The weight ratio of the German BYK2015 to the BYK2013 is 2:1.

the defoaming agent is DF-100.

The embodiment 2 of the invention also provides a preparation method of the environment-friendly water-based ink for the fabric, which comprises the following steps:

(1) Adding a wetting dispersant and water into a stirring kettle, and adding a dye at a rotating speed of 300r/min to obtain a mixture;

(2) Adding the mixture into a sand mill, grinding for 3h at the rotating speed of 1800r/min, then adding methyl cellulose, ethyl cellulose and a defoaming agent, and stirring for 20min to obtain the product.

Example 3

The embodiment 3 of the invention provides environment-friendly water-based ink for fabrics, which comprises the following components in parts by weight:

dye: 35 parts of a binder;

methyl cellulose: 10 parts of (A);

ethyl cellulose: 1 part;

wetting and dispersing agent: 2 parts of a mixture;

defoaming agent: 5 parts of a mixture;

water: 70 parts of the raw materials.

The dye is disperse green 9.

The wetting and dispersing agents are germany BYK2013 and BYK2015.

The weight ratio of the German BYK2013 to the German BYK2015 is 4:1.

the defoaming agent is DF-100.

Embodiment 3 of the present invention also provides a method for preparing an environmentally friendly aqueous ink for textiles, comprising the steps of:

(1) Adding a wetting dispersant and water into a stirring kettle, and adding a dye at a rotating speed of 500r/min to obtain a mixture;

(2) Adding the mixture into a sand mill, grinding for 3h at the rotating speed of 1800r/min, then adding methyl cellulose, ethyl cellulose and a defoaming agent, and stirring for 30min to obtain the product.

Example 4

The embodiment 4 of the invention provides an environment-friendly aqueous ink for fabric and a preparation method of the environment-friendly aqueous ink for fabric, and the specific implementation manner is the same as that of the embodiment 1, except that the wetting dispersant is Germany BYK2013.

Example 5

Example 5 of the present invention provides an eco-friendly aqueous ink for textile use, and a method for preparing the eco-friendly aqueous ink for textile use, which is similar to example 1, except that the wetting and dispersing agent is BYK2015 and basf Efka PX4701; the weight ratio of the German BYK2015 to the Pasteur Efka PX4701 is 2.5:1.

example 6

Example 6 of the present invention provides an environmentally friendly aqueous ink for textiles and a method for preparing an environmentally friendly aqueous ink for textiles, which is the same as example 1 except that the wetting dispersant is BYK2015.

Example 7

The embodiment 7 of the invention provides environment-friendly water-based ink for fabrics and a preparation method thereof, and is the same as the embodiment 1 except that the defoaming agent is DF-200.

Example 8

The embodiment 8 of the invention provides environment-friendly water-based ink for fabrics and a preparation method of the environment-friendly water-based ink for fabrics, the specific implementation mode of the environment-friendly water-based ink is the same as that of the embodiment 1, the ink further comprises 0.08 weight part of an auxiliary agent, and the auxiliary agent is silica sol. The silica sol was purchased from Hangzhou Zhi Ti purification technologies, inc.

Example 9

The embodiment 9 of the invention provides an environment-friendly aqueous ink for fabrics, and also provides a preparation method of the environment-friendly aqueous ink for fabrics, which is the same as that in the embodiment 1, except that the content of the auxiliary agent is replaced by 5 parts.

Performance evaluation

1. And (3) transferring 2mL of the environment-friendly water-based ink used on the fabric in the embodiments 1 to 9, centrifuging the ink for 20min at the rotating speed of 6000r/min, taking the upper layer liquid to measure the particle size, calculating the particle size change before and after centrifugation, and measuring the stability of the ink by using the particle size change.

Particle size variation = (particle size after centrifugation-particle size before centrifugation)/particle size before centrifugation

The results are shown in Table 1.

Table 1 stability test results

	Particle size variation (%)
		Example 1	4.9
Example 2	5.5
		Example 3	6.1
Example 4	17.4
		Example 5	11.6
Example 6	15.3
		Example 7	8.1
Example 8	5.2
		Example 9	26.0

According to experimental results, the environment-friendly water-based ink for the fabric prepared by the method has good stability.

2. And (3) putting the polyester fabric into the environment-friendly water-based ink prepared in the embodiments 1-3 and 8, soaking for 20min, then rolling, and taking out and drying.

(1) Friction firmness test of polyester fabric

Dry friction: the printed fabric is horizontally placed on a liner of a Model-y571 type friction color fastness test and test bench, two ends of the liner are fixed by clamps, then dry friction cloth is fixed on a friction head, the radial direction of the friction cloth is consistent with the motion direction of the friction head, and the friction head makes reciprocating linear friction on a sample along a track of 100mm for 10 times, the time is 10s, and the vertical pressure is 9N.

Wet friction: the printed fabric was replaced and a rubbing test was performed with a wet rubbing cloth in the same manner as described above. And (3) taking out the rubbing cloth after being soaked in the third-level water, extruding the rubbing cloth by a small hydraulic roller to ensure that the sweat flow of the rubbing cloth reaches 95 to 105 percent, and drying the wet rubbing cloth at room temperature after a rubbing test.

Grading: the staining of the rubbing cloth was evaluated by a gray sample card.

(2) Soaping resistance color fastness test

The soaping fastness was tested according to GBT 3921-2008 and the results are shown in Table 2.

TABLE 2 test results of textile printing and dyeing properties

According to experimental results, the environment-friendly water-based ink prepared by the invention has the advantages of good textile printing and dyeing effect, high printing and dyeing quality and high color fastness.

3. Placing the polyester fabric in a sodium hydroxide aqueous solution with the mass fraction of 20%, placing the polyester fabric for 0.5 hour at 100 ℃, placing the polyester fabric after drying in the environment-friendly aqueous ink disclosed by the embodiment of the invention for soaking for 20min for dyeing and drying, then carrying out heat setting at 185 ℃, and testing the dry rubbing color fastness, wherein the experimental results are shown in table 3.

TABLE 3 color fastness test results

	Dry friction
		Example 1	2-3
Example 8	4
		Example 9	2

The foregoing examples are merely illustrative and serve to explain some of the features of the method of the present invention. The appended claims are intended to claim as broad a scope as is contemplated, and the examples presented herein are merely illustrative of selected implementations in accordance with all possible combinations of examples. Accordingly, it is applicants' intention that the appended claims are not to be limited by the choice of examples illustrating features of the invention. Where the claims recite a range of values, such ranges are intended to include sub-ranges within their scope and variations within the range are intended to be interpreted as being covered by the claims as they are appended.

Claims (2)

1. The environment-friendly water-based ink for the fabric is characterized by comprising the following components in parts by weight:

dye: 5-35 parts;

methyl cellulose: 0.1-10 parts;

ethyl cellulose: 0.5-1 part;

wetting and dispersing agent: 0.1-2 parts;

defoaming agent: 1-5 parts;

water: 40-70 parts;

the wetting dispersant is BYK2015 and BYK2013;

the weight ratio of germany BYK2015 to BYK2013 was 2.5:1;

the environment-friendly water-based ink also comprises 0-0.1 part by weight of an auxiliary agent; the weight part of the auxiliary agent is not 0;

the auxiliary agent is silicon dioxide sol;

the defoaming agent is a polyether modified organic silicon defoaming agent; the defoaming agent is DF-100.

2. The preparation method of the environment-friendly aqueous ink for fabric according to claim 1, comprising the following steps:

(1) Adding the wetting dispersant and water into a stirring kettle, and adding the dye at the rotating speed of 300-500r/min to obtain a mixture;

(2) Adding the mixture into a sand mill, grinding for 2-4h at the rotating speed of 1500-2000r/min, then adding methyl cellulose, ethyl cellulose and defoaming agent, and stirring for 20-30min to obtain the product.