CN112853778A - Wet color-changing printing slurry, preparation process thereof and wet color-changing printing process - Google Patents
Wet color-changing printing slurry, preparation process thereof and wet color-changing printing process Download PDFInfo
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- CN112853778A CN112853778A CN202110012390.4A CN202110012390A CN112853778A CN 112853778 A CN112853778 A CN 112853778A CN 202110012390 A CN202110012390 A CN 202110012390A CN 112853778 A CN112853778 A CN 112853778A
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/52—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing synthetic macromolecular substances
- D06P1/5264—Macromolecular compounds obtained otherwise than by reactions involving only unsaturated carbon-to-carbon bonds
- D06P1/5292—Macromolecular compounds obtained otherwise than by reactions involving only unsaturated carbon-to-carbon bonds containing Si-atoms
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/52—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing synthetic macromolecular substances
- D06P1/5207—Macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- D06P1/525—Polymers of unsaturated carboxylic acids or functional derivatives thereof
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/673—Inorganic compounds
- D06P1/67383—Inorganic compounds containing silicon
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/20—Physical treatments affecting dyeing, e.g. ultrasonic or electric
- D06P5/2066—Thermic treatments of textile materials
- D06P5/2077—Thermic treatments of textile materials after dyeing
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
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Abstract
The application relates to the field of color-changing printing, in particular to wet color-changing printing slurry, a preparation process thereof and a wet color-changing printing process. The wet color-changing printing paste comprises the following components: a transparent moisture sensitive material; a binder; the balance of thickener paste; the transparent moisture sensitive material is prepared from the following components: polydimethylsiloxane, a curing agent and water; the preparation method comprises the following steps: a. preparing a thickener paste, and pasting the thickener to obtain the thickener paste; b. b, putting the transparent moisture-sensitive material into the thickener paste obtained in the step a to obtain a semi-finished slurry A; c. b, putting the adhesive into the semi-finished product slurry A prepared in the step B to obtain semi-finished product slurry B; d. and (4) performing ultrasonic dispersion on the semi-finished slurry B. The wet color-changing printing paste can be used for wet color-changing printing of fabrics. The fabric after the printing of the wet color-changing printing paste in the application has good water washing resistance and friction resistance, and the effect of the application range is greatly improved.
Description
Technical Field
The application relates to the field of color-changing printing, in particular to wet color-changing printing slurry, a preparation process thereof and a wet color-changing printing process.
Background
The traditional printing process is mainly to color the fabric by using pigments, and the color of the patterns on the fabric is static. With the progress of scientific technology, the development of society and the continuous improvement of living standard of people, the clothes not only are novel in style and when pursuing colors, but also can be used for people to feel the fun of magic and endless tests while wearing and using by means of modern high and new technology. Therefore, the color-changing coating for textiles is produced, and the research and development of the color-changing coating have been carried out for two decades, and the color-changing coating is really used in recent years.
The color-changing coatings used in textile processing are generally reversible, and the corresponding prints are also called reversible color-changing prints. Only after the reversible color-changing paint is used for textile printing, the printed patterns on the textile can be changed along with the change of external conditions, and the color and luster of the patterns on the textile are changed from conventional static state to novel peculiar dynamic state. Among them, the reversible color-changing print is called as a humidity-sensitive reversible color-changing print, which changes color with the change of humidity.
At present, the research on color-changing printing paints is not much in China, and a lot of products are sold in foreign countries, and most of the color-changing paints are heat-sensitive color-changing paints, such as TC paint of Nippon Songjing pigment chemical industry Co., Ltd, and Licritherm color-changing paint developed by British Memerck chemical company and Heler university. In the humidity-sensitive color-changing coating, both STP series and similar Chameleon M series color-changing printing pastes cannot be washed by water and can only be dry-cleaned by tetrachloroethylene solvent.
In view of the above-mentioned related technologies, the inventors believe that although a general wet-sensitive color-changing printing coating can achieve the effect of wet color change to a certain extent, the printed fabric is not resistant to washing and has a limited application range.
Disclosure of Invention
In a first aspect, the application provides a wet color-changing printing paste, which adopts the following technical scheme:
the wet color-changing printing paste comprises the following components in percentage by mass:
8-14% of transparent moisture sensitive material;
6-12% of adhesive;
the balance of thickener paste;
the transparent humidity-sensitive material is prepared from the following components in parts by mass:
5-7 parts of polydimethylsiloxane;
0.5-0.7 part of curing agent;
water is added to 100 parts;
the thickener paste is formed by pasting a thickener and water according to a certain solid content.
By adopting the technical scheme, the transparent humidity-sensitive material, the adhesive and the thickener paste are compounded to obtain the wet color-changing printing paste. Because the polydimethylsiloxane is a high-hydrophobicity material with 100 percent of light transmission, after the wet color-changing printing paste is used for printing, a layer of transparent film-shaped high-hydrophobicity pattern is obtained on the surface of the fabric.
Different from the common color-changing printing paste which changes in structure after meeting water, the wet color-changing printing paste in the application does not change when meeting water. The color change principle of the wet color change printing paste in the application is that when the wet color change printing paste is in a dry state, a printing film is thin and transparent, visible light can completely penetrate through a printing part, and the color of the ground color of the fabric is displayed, so that the human eyes cannot feel the existence of patterns; after the fabric is immersed in water or splashed with water, the surfaces of the fabric and the fibers are coated by the water layer, light rays pass through the transparent water layer to generate parallel offset, and the offset degree is influenced by the incident angle of the incident light rays and the thickness of the water layer. Because the water layer thickness is greatly different due to the difference of the affinity of the textile printing part and other parts with water, the refraction light of the printing part and other parts is different from the visual angle of the same person, namely the relative refractive index to visible light is different, so that the texture pattern can be presented by different color and luster.
Compared with common color-changing printing paste, the fabric printed by the wet color-changing printing paste has good washing resistance and friction resistance, and the application range is greatly improved.
Optionally, 0.1-0.2 weight part of nano SiO is added into the transparent humidity sensitive material2。
By adopting the technical scheme, the nano SiO2Can be addedFurther improving the wear resistance and toughness of the printed film after printing. And due to the nano SiO2And polydimethylsiloxane, so that the transparency of the material is still high. However, nano SiO2The amount of (A) must be strictly controlled because of the presence of nano SiO2When the content of (A) is too high, not only agglomeration is easy to occur to form stress concentration to cause the performance reduction of the printed film after printing, but also the transparency reduction of the printed film is easy to cause the influence on the color change performance.
Optionally, the adhesive is polymerized from the following raw materials in parts by mass:
the acrylate monomer A is one or two of acrylic acid-2-hydroxyethyl ester and acrylic acid-2-hydroxypropyl ester.
By adopting the technical scheme, butadiene and styrene are copolymerized into the styrene-butadiene rubber emulsion, and the adhesive homopolymer involucra has good elasticity, wear resistance and hand feeling, but poor heat resistance and light resistance. The polymer of the acrylate monomer has a longer carbon chain and better hand feeling, and the acrylate homopolymer has the advantages of transparency, heat resistance, light resistance and the like after film formation, and has general dry cleaning resistance and wear resistance. Preferably, the three monomers can combine respective performances to prepare the adhesive with good hand feeling, high wear resistance, high temperature resistance and high washing fastness.
In addition, the special coupling agent with epoxy groups is selected, so that butadiene and styrene can be polymerized and coupled into a butylbenzene nano material, the butadiene/styrene nano material has good impact resistance, the overall performance of the printing film is greatly improved, and the printing film is not easy to damage even if the printed fabric is subjected to machine washing.
In addition, nano SiO in the transparent humidity sensitive material2The polymer has large specific surface area, high surface energy and hydroxyl group on the surface, so the polymer has poor dispersibility and is easy to agglomerate. If nano SiO2Agglomerated in the polymer, not only affects the mechanical strength of the printed film, but also becomes a visible impurity, affecting the printLight transmission of the flower film. And the coupling agent with epoxy group can be grafted on the nano SiO in the form of covalent bond2Surface of the original hydrophilic nano SiO2Changed into lipophilic nano SiO2Greatly improve the nano SiO2The compatibility with organic environment is greatly improved, and the nano SiO2The dispersibility of (2) and the reduction of nano SiO2The possibility of agglomeration.
In addition, the coupling agent with the epoxy group has the epoxy group, the volume of the epoxy group is larger than that of a methyl group, the polarity is stronger, the steric hindrance of polydimethylsiloxane and the internal rotation potential energy of a chain segment are increased, so that the acting force among polydimethylsiloxane molecular chains is improved, and the water washing resistance of the printing film is further improved because the coupling agent with the epoxy group is not easy to swell during water washing.
Optionally, the thickener is polymerized from the following components in parts by mass:
by adopting the technical scheme, the method has the advantages that,
the acrylic acid monomer containing carboxyl can ensure that the synthesized thickener has good water solubility and dispersibility after being pasted; the acrylate monomer can increase the molecular weight of the thickener paste and reduce the pressure permeability so as to increase the apparent color giving amount of the printing paste; the diene-based initiator can enable a plurality of monomers to be crosslinked into a three-dimensional network structure so as to play a thickening role.
In addition, the thickening agent prepared from the three monomers can show a good thickening effect at a low solid content, has high thixotropy, can be better transferred to fabrics through a printing flat screen or a printing rotary screen, and shows good printability.
Optionally, the carboxylic acid-containing olefinic monomer is one or more of maleic acid, fumaric acid, acrylic acid and itaconic acid;
the acrylate monomer B is one or more of 2-hydroxyethyl methacrylate, hydroxymethyl methacrylate and 2-hydroxybutyl methacrylate;
the dialkenyl initiator is 1, 6-hexanediol diacrylate.
By adopting the above technical scheme, by optimizing each monomer, a thickener having more excellent performance can be synthesized.
In a second aspect, the application provides a preparation process of wet color-changing printing paste, which adopts the following technical scheme:
the preparation process of the wet color-changing printing paste comprises the following steps:
a. preparing a thickener paste, and pasting the thickener according to a solid content of 1-3% to obtain a thickener paste;
b. b, placing the transparent moisture-sensitive material into the thickener paste obtained in the step a, keeping stirring in the adding process, wherein the stirring speed is 1000-;
c. b, placing the adhesive into the semi-finished product slurry A prepared in the step B, keeping stirring in the adding process, and continuing stirring for 30-40min after the adding is finished to obtain semi-finished product slurry B;
d. and (4) performing ultrasonic dispersion and defoaming on the semi-finished product slurry B to obtain the wet color-changing printing slurry.
By adopting the technical scheme, the preparation process of the printing paste must be that thickener paste is prepared and stirred firstly, then the transparent moisture-sensitive material is added, and finally the adhesive is added, and the sequence cannot be changed. This is because:
the thickening agent has higher viscosity but better thixotropy, so that the viscosity of the thickening agent can be greatly reduced on the premise of reducing the generation of bubbles by stirring at a certain rotating speed after pasting. And then the transparent moisture-sensitive material is added into the thickening agent, so that the quick mixing and dispersion of the thickening agent and the transparent moisture-sensitive material can be realized. After the adhesive is added, the coupling agent with the epoxy group in the adhesive can be uniformly dispersed with the nano SiO2Contact, and to some extent graft to, the nano-SiO2Surface, thereby further improving the nano SiO2The dispersing effect of (1). Finally, ultrasonic dispersion and defoaming are carried out, so that the nano SiO can be further improved2The dispersion of (2) and can also remove bubbles generated in the printing paste. After the nano SiO is not stirred, the viscosity of the printing paste is continuously improved so as to ensure that the nano SiO is mixed with the printing paste2Is fixed.
In a third aspect, the application provides a wet color-changing printing process, which adopts the following technical scheme:
a wet color-changing printing process is characterized in that: the method comprises the following process steps:
s1, fabric printing, namely printing the dyed fabric by using the wet color-changing printing paste prepared by the method in claim 5 to obtain a printed fabric;
s2, pre-drying, namely, pre-drying the printed fabric obtained in the step S1 at the temperature of 100-120 ℃ to obtain a pre-dried fabric;
and S3, baking, namely, baking the pre-baked fabric in the step S2 to obtain a finished fabric.
By adopting the technical scheme, the printing paste prepared by the system has stronger hygroscopicity, is not suitable for adopting a steaming mode and is more suitable for using a baking fixation process. The purpose of pre-baking and baking is to remove the water in the printing paste uniformly and to fix the effective components on the fabric. After the dyed fabric is printed, the printing paste is covered on the surface of the fabric through the action of the adhesive, the printing fastness of the fabric is quite low, and certain substances such as adhesive in the paste and the like can react with the fiber to be fixed on the fabric only through pre-drying and baking treatment.
Optionally, in step S1, a scraping process is adopted, and the number of scraping is 2-3.
By adopting the technical scheme, the number of times of scraping and printing determines the pulp obtaining amount of the fabric, and as the pulp obtaining amount is slowly increased, the soaping color fastness is improved, but the stiffness is increased, and the softness is reduced. Particularly, the scratch printing is carried out for more than 3 times, although the pulp yield is almost not improved any more, the scratch printing times are more, the pulp is pressed for more times, and the pulp penetrates into the fabric more, so that the influence on the fabric hand feeling is more obvious. Meanwhile, the definition and the color development effect of the patterns are greatly influenced, and whether the patterns are clear or not directly influences the marketing link. Therefore, the number of times of scraping is preferably 2 to 3 in combination of various factors.
Optionally, in the step S3, the baking temperature is 160-165 ℃, and the baking time is 2-3 min.
By adopting the technical scheme, the influence of the baking condition on the color fastness of the fabric is very obvious, the color fastness of the fabric is obviously improved along with the increase of the baking temperature, however, when the baking temperature is too high, the fabric is easy to yellow due to high temperature, and the printing paste is easy to have the phenomenon of no dryness in the surface drying.
Optionally, the step S2 specifically includes the following process steps:
a. preliminary pre-drying, namely pre-drying the printed fabric obtained in the step S1 at the temperature of 100-120 ℃ for 2-3min to obtain a preliminary pre-dried fabric;
b. b, ultrasonic oscillation, namely immersing the preliminary pre-dried fabric in the step a into water for ultrasonic oscillation, wherein the water temperature is 50-60 ℃, and the oscillation time is 15-20s, so as to obtain an oscillation fabric;
c. and (c) two-stage pre-drying, namely pre-drying the oscillating fabric in the step (b) at the temperature of 100-120 ℃ for 1-2min to obtain the pre-dried fabric.
By adopting the technical scheme, the pre-drying process is divided into two sections of pre-drying, and the ultrasonic oscillation process is added in the two sections of pre-drying, because the inventor finds that after the primary pre-drying, the surface of the printing paste is condensed, and the interior of the printing paste is in a semi-dry state. At the moment, the printed fabric is put into water for short-time oscillation, so that the phenomenon of bleeding of printing paste is avoided, and the surface of the baked printed film is in a regular and uneven corrugated shape. When the corrugated printed film on the surface reflects light, the light rays in different reflection paths can generate quite complicated optical phenomena such as superposition, offset and the like, the optical development phenomenon of the printed film is greatly improved, and printed patterns can display more various colors.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the components and the proportion of the wet color-changing printing paste are specially selected and limited, so that the printing paste can be well attached to the surface of the fabric, and the effect of appearing patterns when meeting water is obtained through the difference of the hydrophilicities of the printing film and the fabric;
2. by adding a small amount of nano SiO into the transparent humidity-sensitive material2On the premise of ensuring the transparency of a system, the wear resistance and toughness of the printing paste after film formation are greatly improved;
3. by specially selecting and limiting the components and the proportion of the adhesive and selecting the special coupling agent with epoxy groups, the printing paste has excellent performance after film forming, and the nano SiO is greatly reduced2The possibility of agglomeration;
4. by specially selecting and limiting the components and the proportion of the thickening agent, the solid content of the printing paste can be controlled at a lower level on the premise of ensuring a certain viscosity, and the influence on the hand feeling of the fabric after the printing paste is formed into a film is small;
5. according to the special composition and proportion of the printing paste, the special preparation process of the printing paste is determined, and the printing paste with more excellent performance is prepared by combining the formula and the preparation process;
6. by selecting a specific printing process and limiting the scraping and printing times, the baking time and the pre-baking process, the printed film with clear outline and moderate thickness can be formed, the surface of the printed film can be in a regular corrugated shape, and the optical development effect of the printed film is further improved.
Detailed Description
Examples
The embodiment of the application discloses wet color-changing printing paste and a preparation process thereof.
Example 1
The wet color-changing printing paste comprises the following components in percentage by mass:
12% of transparent moisture sensitive material;
10% of adhesive;
78% of thickener paste.
The transparent humidity-sensitive material is prepared from the following components in parts by mass:
6 parts of polydimethylsiloxane;
0.6 part of curing agent;
93.4 parts of water.
Wherein the adhesive is Hangzhou Zhuoli chemical printing adhesive ZL-311.
Wherein the thickener paste is a paint printing thickener ZL-312 in Hangzhou Zhuo vertical chemical engineering and is prepared by pasting according to certain solid content.
Wherein, the polydimethylsiloxane is selected from German Wacker AK series, and the viscosity is 500 CS.
Wherein the curing agent is dibutyltin dilaurate and is produced by a new material of Foshan Jinjia.
The preparation process of the wet color-changing printing paste comprises the following steps:
a. preparing a thickener paste, and pasting the thickener according to the solid content of 3% to obtain the thickener paste;
b. b, placing the transparent moisture-sensitive material into the thickener paste obtained in the step a, keeping stirring in the adding process, wherein the stirring speed is 1200r/min, and after the transparent moisture-sensitive material is added, continuing stirring for 30min to obtain a semi-finished product slurry A;
c. b, placing the adhesive into the semi-finished product slurry A prepared in the step B, keeping stirring in the adding process, and continuing stirring for 40min after the adding is finished to obtain semi-finished product slurry B;
d. and (4) performing ultrasonic dispersion and defoaming on the semi-finished product slurry B to obtain the wet color-changing printing slurry.
Example 2
The difference between the example 2 and the example 1 is that the transparent humidity sensitive material is prepared from the following components in percentage by mass:
wherein, the nano SiO2Selecting Yingchuangdegussa white carbon black AEROSIL 200.
The rest is the same as in example 1.
Example 3
The difference between the example 3 and the example 2 is that the adhesive is not the printing adhesive ZL-311 in Hangzhou Zhuo chemical industry, but is polymerized by the following raw materials in parts by mass:
wherein the acrylate monomer A is 2-hydroxyethyl acrylate, and is produced by science and technology in Hubei Jusheng.
Wherein the coupling agent having an epoxy group is an A-187 silane coupling agent of the American Meyer diagram.
Example 4
Example 4 differs from example 3 in that the thickener paste is formed by pasting a thickener and water at a solid content of 3%, and the thickener is formed by polymerizing components including, in parts by mass:
wherein, the acrylic acid monomer containing carboxyl is maleic acid, and is produced by Taixing medium dyeing chemical industry.
Wherein the acrylate monomer B is 2-hydroxybutyl methacrylate and is commercially available from Beijing Merrida science and technology.
Wherein the diene-based initiator is 1, 6-hexanediol diacrylate and is produced by Wuhan Carnous technology.
The difference between the example 5 and the example 4 is that the acrylate monomer A added into the adhesive is 2-hydroxyethyl acrylate and 2-hydroxypropyl acrylate in equal mass ratio, and the acrylate monomer A is produced by Hubei Jusheng technology.
Example 6 differs from example 4 in that the components of the thickener are preferably,
the acrylic acid monomer containing carboxyl is a mixture of fumaric acid and itaconic acid with equal mass ratio;
the acrylate monomer B is a mixture of 2-hydroxyethyl methacrylate and hydroxymethyl methacrylate in equal mass ratio.
Among them, fumaric acid is purchased from Jinri and chemical industries of Jinan province.
Among them, itaconic acid is purchased from Shandonghao Shun chemical industry.
Wherein 2-hydroxyethyl methacrylate and hydroxymethyl methacrylate are both available from Beijing Merrida technology.
Example 7 differs from example 6 in that the components of the thickener are preferably,
the acrylic acid monomer containing carboxyl is a mixture of maleic acid, fumaric acid and acrylic acid in equal mass ratio;
the acrylate monomer is a mixture of 2-hydroxyethyl methacrylate and hydroxymethyl methacrylate in equal mass ratio.
Among them, acrylic acid is purchased from Shandong Ju and Biotechnology.
Examples 8 to 11 differ from example 4 in that the mass percentages of the components in the wet colour-changing printing paste are as follows:
examples 12 to 16 differ from example 4 in that the proportions in parts by weight and the process parameters of the respective raw materials of the transparent moisture-sensitive material, the binder and the thickener are as follows:
comparative example
Comparative example 1
The printing paste used in comparative example 1 is a humidity sensitive color-changing printing paste produced by Beijing Hongmu online textile information network limited company- "lotus-18 out of water".
Comparative example 2
Comparative example 2 is a blank control, i.e. no printing treatment.
Application example
The application example of the application discloses a wet color-changing printing process.
Application example 1
The wet color-changing printing process specifically comprises the following process steps:
s1, fabric printing, namely printing the dyed fabric by using the wet color-changing printing paste prepared in the embodiment 1, and performing scraping printing for 4 times in a scraping printing mode to obtain a printed fabric;
s2, pre-drying, namely, pre-drying the printed fabric obtained in the step S1 at the temperature of 120 ℃, wherein the pre-drying time is 3min, so that the pre-dried fabric is obtained;
and S3, baking, namely baking the pre-baked fabric in the step S2 at 165 ℃ for 2min to obtain a finished fabric.
Application example 2
The difference between application example 2 and application example 1 is that the number of times of scraping is 2 in step S1.
Application example 3
The difference between application example 3 and application example 1 is that the number of times of scraping is 3 in step S1.
Application example 4
The difference between application example 4 and application example 2 is that in step S2, the pre-baking temperature is 100 ℃, and the pre-baking time is 5 min; in step S3, the baking temperature is 160 ℃ and the baking time is 3 min.
Application example 5
The difference between the application example 5 and the application example 2 is that the wet color-changing printing process specifically comprises the following process steps:
s1, fabric printing, namely printing the dyed fabric by using the wet color-changing printing paste prepared in the embodiment 1, and performing scraping printing for 2 times in a scraping printing mode to obtain a printed fabric;
s2, prebaking, wherein the specific process comprises the following steps:
a. preliminary pre-drying, namely pre-drying the printed fabric obtained in the step S1 for 2min at the temperature of 120 ℃ to obtain a preliminary pre-dried fabric;
b. b, ultrasonic oscillation, namely immersing the preliminary pre-dried fabric in the step a into water for ultrasonic oscillation, wherein the water temperature is 60 ℃ and the oscillation time is 15s, so as to obtain an oscillation fabric;
c. b, pre-drying for two times, namely pre-drying the oscillating fabric in the step b for 1min at the temperature of 120 ℃ to obtain a pre-dried fabric;
and S3, baking, namely baking the pre-baked fabric in the step S2 at 165 ℃ for 2min to obtain a finished fabric.
Application example 6
The difference between the application example 6 and the application example 5 is that in the pre-drying process, the preliminary pre-drying temperature in the step a is 100 ℃, and the preliminary pre-drying time is 3 min; the water temperature of ultrasonic oscillation in the step b is 50 ℃, and the oscillation time is 20 s; and c, the second-stage pre-drying temperature in the step c is 100 ℃, and the second-stage pre-drying time is 2 min.
Application example 7
Application example 7 differs from application example 5 in that the printing paste was taken from the wet colour change printing paste prepared in example 2.
Application example 8
Application example 8 differs from application example 5 in that the printing paste was taken from the wet colour change printing paste prepared in example 3.
Application example 9
Application example 9 differs from application example 5 in that the printing paste was taken from the wet colour change printing paste prepared in example 4.
Application example 10
Application example 10 differs from application example 5 in that the printing paste was taken from the wet colour change printing paste prepared in example 5.
Application example 11
Application example 11 differs from application example 5 in that the printing paste was taken from the wet colour change printing paste prepared in example 7.
Application example 12
Application example 12 differs from application example 5 in that the printing paste was taken from the wet colour change printing paste prepared in example 10.
Application example 13
Application example 13 differs from application example 5 in that the print paste was taken from the wet colour change print paste prepared in example 13.
Application example 14
Application example 14 differs from application example 5 in that the printing paste was taken from comparative example 1.
Application example 15
Application example 15 the fabric of comparative example 2 was used without printing treatment.
Detection method and experimental data
1. Colour fastness to washing test of fabrics
Color fastness to washing: according to the test GB/T3921.1-1997, i.e. the textile colour fastness test wash fastness test 1, the colour change rating of the wash fastness was changed to be carried out in the wet state.
2. Rubbing fastness test of fabrics
Color fastness to rubbing: according to GB/T3920-1997 test, namely the color fastness to rubbing of textile, according to the standard for measuring the fastness to rubbing, dry cloth and wet cloth are used for reciprocating linear rubbing, and the staining of the original standard for evaluating whether the water-entering patterns are clear after rubbing for a certain number of times is changed.
3. Method for testing stiffness of fabric
The nonwoven was tested for flexural stiffness (ability of the fabric to resist its flexural deformation) according to method ZBW04003-87, with greater flexural length indicating stiffer and less flexible.
4. Wet water color effect of fabric
And observing the color development effect of the fabric when the fabric is wetted by adopting a visual inspection mode.
The test results are reported in the following table:
conclusion
1. By comparing the data of application example 2, application example 7 and application example 8, it can be found that nano SiO is added2The rubbing resistance of the fabric printing film can be obviously improved, the adhesive and the transparent moisture-sensitive material have a synergistic effect, the rubbing resistance of the fabric printing film can be further improved, and particularly, the washing resistance of the fabric printing film can be greatly improved.
2. By comparing the data of application example 2, application example 8 and application example 9, the specific thickener in the application can ensure that the printed film has softer hand feeling on the basis of ensuring better friction resistance and washing resistance, and the influence of the printed film on the hand feeling of the fabric is reduced.
3. Through comparing application example 1, application example 2 and application example 3, it can be concluded that the number of times of scraping and printing can influence the pulp yield, and although the pulp yield rises and can improve the friction resistance and the water washing resistance of the printing film to a certain extent, the influence of the excessively high pulp yield on the fabric hand feeling is larger, and when the number of times of scraping and printing is higher than 3 times, the fabric hand feeling is quite stiff and affects the wearability of the fabric.
4. By comparing the data of application example 1 and application example 5, it can be obtained that the wet water color development effect of the final printed film is not affected and a further color transformation effect is additionally provided for the printed film by adding ultrasonic oscillation treatment in the pre-drying process.
The above are all preferred embodiments of the present application, which are not intended to limit the present application, and those skilled in the art can make modifications to the embodiments without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present application.
Claims (10)
1. The wet color-changing printing paste is characterized in that: the composite material comprises the following components in percentage by mass:
8-14% of transparent moisture sensitive material;
6-12% of adhesive;
the balance of thickener paste;
the transparent humidity-sensitive material is prepared from the following components in parts by mass:
5-7 parts of polydimethylsiloxane;
0.5-0.7 part of curing agent;
water is added to 100 parts;
the thickener paste is formed by pasting a thickener and water according to a certain solid content.
2. A wet colour change printing paste according to claim 1, characterised in that: the transparent humidity sensitive material is also added with 0.1 to 0.2 weight part of nano SiO2。
3. A wet colour change printing paste according to claim 1 or 2, characterised in that: the adhesive is prepared by polymerizing the following raw materials in parts by mass:
the acrylate monomer A is one or two of acrylic acid-2-hydroxyethyl ester and acrylic acid-2-hydroxypropyl ester.
4. A wet colour change printing paste according to claim 1 or 2, characterised in that: the thickening agent is polymerized from the following components in parts by mass:
5. the wet color change printing paste according to claim 4, wherein:
the acrylic acid monomer containing carboxyl is one or more of maleic acid, fumaric acid, acrylic acid and itaconic acid;
the acrylate monomer B is one or more of 2-hydroxyethyl methacrylate, hydroxymethyl methacrylate and 2-hydroxybutyl methacrylate;
the dialkenyl initiator is 1, 6-hexanediol diacrylate.
6. Process for the preparation of a wet colour change printing paste according to any of claims 1 to 5, characterised in that: the method comprises the following steps:
a. preparing a thickener paste, and pasting the thickener according to a solid content of 1-3% to obtain the thickener paste;
b. b, placing the transparent moisture-sensitive material into the thickener paste obtained in the step a, keeping stirring in the adding process, wherein the stirring speed is 1000-;
c. b, placing the adhesive into the semi-finished product slurry A prepared in the step B, keeping stirring in the adding process, and continuing stirring for 30-40min after the adding is finished to obtain semi-finished product slurry B;
d. and (4) performing ultrasonic dispersion and defoaming on the semi-finished product slurry B to obtain the wet color-changing printing slurry.
7. A wet color-changing printing process is characterized in that: the method comprises the following process steps:
s1, fabric printing, namely printing the dyed fabric by using the wet color-changing printing paste prepared by the method in claim 5 to obtain a printed fabric;
s2, pre-drying, namely, pre-drying the printed fabric obtained in the step S1 at the temperature of 100-120 ℃ to obtain a pre-dried fabric;
and S3, baking, namely, baking the pre-baked fabric in the step S2 to obtain a finished fabric.
8. The wet color-changing printing process according to claim 7, wherein: in the step S1, a scraping process is adopted, and the number of scraping is 2-3.
9. The wet color-changing printing process according to claim 7, wherein: in the step S3, the baking temperature is 160-165 ℃, and the baking time is 2-3 min.
10. The wet color-changing printing process according to claim 7, wherein: the step S2 specifically includes the following process steps:
a. preliminary pre-drying, namely pre-drying the printed fabric obtained in the step S1 at the temperature of 100-120 ℃ for 2-3min to obtain a preliminary pre-dried fabric;
b. b, ultrasonic oscillation, namely immersing the preliminary pre-dried fabric in the step a into water for ultrasonic oscillation, wherein the water temperature is 50-60 ℃, and the oscillation time is 15-20s, so as to obtain an oscillation fabric;
c. and (c) two-stage pre-drying, namely pre-drying the oscillating fabric in the step (b) at the temperature of 100-120 ℃ for 1-2min to obtain the pre-dried fabric.
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| JPS56130755A (en) * | 1980-05-28 | 1981-10-13 | Dainippon Printing Co Ltd | Manufacture of printing plate for planograph |
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| CN110924194A (en) * | 2019-11-14 | 2020-03-27 | 南通大学 | Preparation method of efficient photo-thermal steam conversion material |
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| JPS56130755A (en) * | 1980-05-28 | 1981-10-13 | Dainippon Printing Co Ltd | Manufacture of printing plate for planograph |
| CN1743545A (en) * | 2005-09-30 | 2006-03-08 | 浙江理工大学 | Textile anticounterfeit printing method |
| CN106087484A (en) * | 2016-06-01 | 2016-11-09 | 江阴东进寝装有限公司 | A kind of intelligence temperature induced color changing fabric processing technique |
| CN109930392A (en) * | 2019-02-28 | 2019-06-25 | 上海驰纺材料科技有限公司 | A kind of preparation method of the water-fastness long acting containing cotton knitted fabric |
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