阅读说明：本技术 一种用于理光喷头的纺织墨水及其制备方法 (Textile ink for light-regulating nozzle and preparation method thereof ) 是由 邓卫明 王芳华 于 2019-09-26 设计创作，主要内容包括：本发明公开了一种用于理光喷头的纺织墨水：由以下重量份数的原料制成：颜料色浆：200-300份；水性丙烯酸聚合物乳液：100-200份；溶剂：400-550份；表面活性剂：10-20份；固化剂：20-40份；杀菌剂：1-10份；PH值调节剂：2-10份；去离子水：10-200份；所述水性丙烯酸聚合物乳液,其平均粒径在200nm以下,其玻璃化温度为-20℃以下；所述溶剂选自二甘醇,丙二醇,丙三醇,聚乙二醇,1-5戊二醇,己二醇中的一种或几种；所述表面活性剂为阴离子表面活性剂。本发明还提供了用于理光喷头的纺织墨水的制备方法,加入原料混合搅拌,再使用1.0Um滤膜过滤两遍制得用于理光喷头的纺织墨水。由于树脂平均粒径在200nm以下,避免团聚絮凝,防止喷头堵塞,赋予墨水良好的稳定性和打印流畅性。(The invention discloses a textile ink for a light-management nozzle, which comprises the following components in parts by weight: the feed is prepared from the following raw materials in parts by weight: pigment color paste: 200-300 parts; aqueous acrylic polymer emulsion: 100-200 parts; solvent: 400-550 parts; surfactant (b): 10-20 parts; curing agent: 20-40 parts; and (3) bactericide: 1-10 parts; pH value regulator: 2-10 parts; deionized water: 10-200 parts; the average particle size of the water-based acrylic polymer emulsion is less than 200nm, and the glass transition temperature of the water-based acrylic polymer emulsion is less than-20 ℃; the solvent is one or more selected from diethylene glycol, propylene glycol, glycerol, polyethylene glycol, 1-5 pentanediol and hexanediol; the surfactant is an anionic surfactant. The invention also provides a preparation method of the textile ink for the light-management nozzle, which comprises the steps of adding the raw materials, mixing and stirring, and filtering twice by using a 1.0Um filter membrane to obtain the textile ink for the light-management nozzle. Because the average particle size of the resin is below 200nm, agglomeration and flocculation are avoided, the nozzle is prevented from being blocked, and the ink has good stability and printing fluency.)

1. A textile ink for a light management nozzle is characterized in that: the feed is prepared from the following raw materials in parts by weight:

pigment color paste: 200-300 parts; aqueous acrylic polymer emulsion: 100-200 parts; solvent: 400-550 parts; surfactant (b): 10-20 parts; curing agent: 20-40 parts; and (3) bactericide: 1-10 parts; pH value regulator: 2-10 parts; deionized water: 10-200 parts; the average particle size of the aqueous acrylic polymer emulsion is less than 200nm, and the glass transition temperature of the aqueous acrylic polymer emulsion is less than-20 ℃; the solvent is one or more selected from diethylene glycol, propylene glycol, glycerol, polyethylene glycol, 1-5 pentanediol and hexanediol; the surfactant is an anionic surfactant.

2. The textile ink of claim 1, wherein: the feed is prepared from the following raw materials in parts by weight:

pigment color paste: 200 portions and 250 portions; aqueous acrylic polymer emulsion: 100-150 parts; solvent: 400-480 parts; surfactant (b): 10-15 parts; curing agent: 20-30 parts of a solvent; and (3) bactericide: 2-3 parts of a solvent; pH value regulator: 2-6 parts; deionized water: 10-156 parts.

3. The textile ink of claim 1, wherein: the feed is prepared from the following raw materials in parts by weight:

pigment color paste: 250-300 parts; aqueous acrylic polymer emulsion: 150-200 parts; solvent: 480-550 parts; surfactant (b): 15-20 parts of a solvent; curing agent: 30-40 parts; and (3) bactericide: 3-10 parts; pH value regulator: 6-10 parts; deionized water: 156 portion and 200 portions.

4. The textile ink of claim 1, wherein: the feed is prepared from the following raw materials in parts by weight:

pigment color paste: 250 parts of (A); aqueous acrylic polymer emulsion: 150 parts; solvent: 480 parts of a mixture; surfactant (b): 15 parts of (1); curing agent: 30 parts of (1); and (3) bactericide: 3 parts of a mixture; pH value regulator: 6 parts of (1); deionized water: 74 parts of; the pigment color paste comprises a black pigment, a blue pigment, a red pigment and a yellow pigment, wherein the black pigment is carbon black.

5. The textile ink of claim 1, wherein: the curing agent is selected from blocked isocyanate; the bactericide is benzisothiazolinone; the pH value regulator is one of trihydroxymethyl aminomethane or triethanolamine.

6. A process for the preparation of a textile ink according to any one of claims 1 to 5, characterized in that: the method comprises the following steps:

s1) raw material preparation: adding a solvent, a surfactant, a bactericide and a pH value regulator into deionized water in sequence according to parts by weight;

s2) mixing: stirring the raw materials at a high speed for 5 minutes, adding the aqueous acrylic polymer emulsion, and stirring at a high speed for 30 minutes;

s3) stirring: adding pigment color paste and curing agent, and continuing to stir at high speed for 2 hours;

s4) filtering: and filtering twice through a 1.0-Um filter membrane to obtain the textile ink for the light-management nozzle.

Technical Field

The invention relates to the field of digital printing, in particular to textile ink for a light-management nozzle, and especially relates to textile ink for a light-management nozzle and a preparation method thereof.

Background

The digital direct-injection coating printing is mainly to directly spray and print patterns or images on textiles by adopting digital direct-injection textile coating ink through a wide-format printer. Digital direct-injection pigment printing has many advantages: the fiber has universality for different fibers; the process is simple, and the finished product is obtained by directly baking at high temperature after printing; no sewage discharge, and environmental protection is facilitated; the light fastness is good. Due to the advantages, the digital direct-injection pigment printing is favored by a plurality of printing manufacturers, and the development is faster in recent years. The Epson heads commonly used in the market have high printing precision, but have low printing speed, and cannot meet the requirements of printing piece cloth, curtains and the like on the printing speed, so that a plurality of industrial spray head printers are used for digital printing of cloth. Common industrial nozzles are rational light, starlight, Konika and the like, and because each type of printing head has different ink jet drops and different requirements on the viscosity of ink, common industrial nozzle printers are matched with special ink. In recent years, the light-regulating industrial spray head is very suitable for industrial digital printing, has accurate ink dots, strong spraying force, open ink system, wide printing scheme and quick development, is second to an Epson DX spray head and leaps second. The printer mainly comprises MIMAKI, color god, Dingshang, win, Xuanlang, Rui Nuo Si, etc.

However, in the prior art, because the scheme that the light-regulating nozzle is used for the pure cotton direct-injection printing machine is not long in the world, the matched printing ink is less, and most of the light-regulating nozzle inks on the market have the problems of poor printing smoothness and poor dry and wet rubbing fastness.

Disclosure of Invention

The invention provides textile ink for a light-management nozzle, which effectively improves the dry and wet rubbing fastness of the ink and the smoothness of printing.

In order to solve the technical problems, the technical scheme of the invention is as follows:

a textile ink for a light management nozzle: the feed is prepared from the following raw materials in parts by weight:

pigment color paste: 200-300 parts; aqueous acrylic polymer emulsion: 100-200 parts; solvent: 400-550 parts; surfactant (b): 10-20 parts; curing agent: 20-40 parts; and (3) bactericide: 1-10 parts; pH value regulator: 2-10 parts; deionized water: 10-200 parts; the average particle size of the water-based acrylic polymer emulsion is less than 200nm, and the glass transition temperature of the water-based acrylic polymer emulsion is less than-20 ℃; the solvent is one or more selected from diethylene glycol, propylene glycol, glycerol, polyethylene glycol, 1-5 pentanediol and hexanediol; the surfactant is an anionic surfactant.

The glass transition temperature (Tg) of the water-based acrylic polymer emulsion is below-20 ℃, so that the softness of a coating film is ensured; the aqueous acrylic polymer emulsion is preferred624,

One or two of HRC 1661.

The aqueous acrylic polymer emulsion imparts good adhesion of the ink to textiles.

The average particle size of the resin is below 200nm, and the resin can be stable for a long time in an ink system and cannot generate agglomeration and flocculation.

The solvent is selected from diethylene glycol, propylene glycol, glycerol, polyethylene glycol and 1-5 pentanediol, and the hexanediol endows the ink with proper viscosity and good moisturizing performance.

Preferably, the feed is prepared from the following raw materials in parts by weight:

pigment color paste: 200 portions and 250 portions; aqueous acrylic polymer emulsion: 100-150 parts; solvent: 400-480 parts; surfactant (b): 10-15 parts; curing agent: 20-30 parts of a solvent; and (3) bactericide: 2-3 parts of a solvent; pH value regulator: 2-6 parts; deionized water: 10-156 parts.

More preferably, the feed additive is prepared from the following raw materials in parts by weight:

pigment color paste: 250-300 parts; aqueous acrylic polymer emulsion: 150-200 parts; solvent: 480-550 parts; surfactant (b): 15-20 parts of a solvent; curing agent: 30-40 parts; and (3) bactericide: 3-10 parts; pH value regulator: 6-10 parts; deionized water: 156 portion and 200 portions.

More preferably, the feed additive is prepared from the following raw materials in parts by weight:

pigment color paste: 250 parts of (A); aqueous acrylic polymer emulsion: 150 parts; solvent: 480 parts of a mixture; surfactant (b): 15 parts of (1); curing agent: 30 parts of (1); and (3) bactericide: 3 parts of a mixture; pH value regulator: 6 parts of (1); deionized water: 74 parts. The pigment color paste comprises a black pigment, a blue pigment, a red pigment and a yellow pigment, wherein the black pigment is carbon black.

The blue pigment is pigment blue 15:3 and pigment blue 15: 4; the red pigment is pigment red 122 and pigment red 205; the yellow pigments are pigment yellow 155, pigment yellow 74.

More preferably, the curing agent is selected from blocked isocyanates; the bactericide is benzisothiazolinone; the pH value regulator is one of trihydroxymethyl aminomethane or triethanolamine.

In another aspect, the present invention provides a method for preparing textile ink, comprising the following steps:

s1) raw material preparation: adding a solvent, a surfactant, a bactericide and a pH value regulator into deionized water in sequence according to parts by weight;

s2) mixing: stirring the raw materials at a high speed for 5 minutes, adding the aqueous acrylic polymer emulsion, and stirring at a high speed for 30 minutes;

s3) stirring: adding pigment color paste and curing agent, and continuing to stir at high speed for 2 hours;

s4) filtering: and filtering twice through a 1.0-Um filter membrane to obtain the textile ink for the light-management nozzle.

By adopting the technical scheme, the glass transition temperature (Tg) of the aqueous acrylic polymer emulsion is below-20 ℃, so that the softness of a coating film is ensured, the coating film can not crack when printed on a textile, and the dry and wet rubbing fastness of a printed pattern is obviously improved by combining the good adhesion performance of the ink on the textile given by the aqueous acrylic polymer emulsion. In addition, the average resin particle size of the aqueous acrylic polymer emulsion is below 200nm, and the aqueous acrylic polymer emulsion can be stable for a long time in an ink system, cannot generate agglomeration and flocculation, prevents a spray head from being blocked, and endows the ink with good stability and printing fluency. In addition, the solvent is selected from diethylene glycol, propylene glycol, glycerol, polyethylene glycol, 1-5 pentanediol and hexanediol, so that the ink is endowed with proper viscosity and good moisture retention performance, and the ink can also have good printing fluency.

Detailed Description

The following further describes the embodiments of the present invention. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

A preparation method of textile ink comprises the following steps:

s1) raw material preparation: adding a solvent, a surfactant, a bactericide and a pH value regulator into deionized water in sequence according to parts by weight;

s2) mixing: stirring the raw materials at a high speed for 5 minutes, adding the aqueous acrylic polymer emulsion, and stirring at a high speed for 30 minutes;

s3) stirring: adding pigment color paste and curing agent, and continuing to stir at high speed for 2 hours;

s4) filtering: and filtering twice through a 1.0-Um filter membrane to obtain the textile ink for the light-management nozzle. Example 1, example 2, example 3 and comparative examples were prepared according to the procedure of example 1, the above preparation procedure and the formulation of table 1 below.

TABLE 1 ink formulations (in weight percent) of the examples

Blue ink, red ink and yellow ink of each example were prepared according to the formulation of table 1 and the above preparation method.

The physical and chemical parameters of the prepared ink are as follows:

pH value: 7-9;

surface tension: 25-40 dyn/cm;

viscosity: 8-12 mpa · s;

conductivity: ≦ 1 mS/cm;

and testing dry and wet rubbing fastness on a dry and wet rubbing fastness instrument according to the AATCC 8-2013 standard.

And (3) printing fluency testing, namely continuously printing by 4pass for 30m on a Caishen TX-3200DS direct-injection printing machine, and judging that the printing is qualified when the number of broken holes is less than 3.

The test results are shown in table 2:

TABLE 2 ink Dry and Wet rub fastness and printing Performance

	Fastness to dry rubbing	Fastness to wet rubbing	Fluency of printing
				Example 1	3.5	3.0	Qualified
Example 2	4.0	3.0	Qualified
				Example 3	4.0	3.5	Qualified
Comparative example	3.0	2.5	Fail to be qualified

The finishing Gen5 nozzle textile coating ink can directly print patterns typeset by a computer on various fabrics through a digital printing printer, has bright and bright color, high dry and wet rubbing color fastness and good printing smoothness, does not crack when being stretched, does not need the processes of plate making, pretreatment and post-treatment of the traditional printing process, and only needs to be dried after printing finished products, thereby saving energy and protecting environment.

The embodiments of the present invention have been described in detail, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.