CN113563537A - Silane modified acrylic emulsion for pigment printing and preparation method thereof - Google Patents
Silane modified acrylic emulsion for pigment printing and preparation method thereof Download PDFInfo
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- CN113563537A CN113563537A CN202110951987.5A CN202110951987A CN113563537A CN 113563537 A CN113563537 A CN 113563537A CN 202110951987 A CN202110951987 A CN 202110951987A CN 113563537 A CN113563537 A CN 113563537A
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- acrylate
- emulsion
- modified acrylic
- acrylic emulsion
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/006—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polymers provided for in C08G18/00
- C08F283/008—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polymers provided for in C08G18/00 on to unsaturated polymers
-
- 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
- D06P1/5257—(Meth)acrylic acid
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
The invention relates to silane modified acrylic emulsion for pigment printing, which comprises the following raw materials in parts by weight: 55-75 parts of butyl acrylate; 20-25 parts of methyl methacrylate; 2-5 parts of hydroxyethyl acrylate; 6-8 parts of isooctyl acrylate; 3-7 parts of acrylate silicon PU prepolymer; 0.001-0.005 part of ammonium persulfate; 1-2 parts of an emulsifier; 0.5-1 part of alpha-methacrylic acid; 60-80 parts of deionized water; 0.01-0.1 part of ammonia water. According to the invention, silicon-carbon bonds, silicon-oxygen bonds and urethane bonds are introduced into acrylic resin through the acrylate-based silicone PU prepolymer, and the pigment powder can be well wetted and coated by grafting oleophylic groups and hydrophilic groups and curling molecular chain segments, so that the covering power and the water resistance of the printing coating are improved.
Description
Technical Field
The invention relates to the field of functional polymers, in particular to silane modified acrylic emulsion for pigment printing and a preparation method thereof.
Background
Generally, when a dark pattern is overprinted on a medium-dark ground color fabric or a pattern with high color vividness is overprinted by a color coating overprinting paste, the color change or color withering is most likely to occur because the covering power of the printing paste overprinted on the ground color fabric is poor. For example, the bright red color is often distorted, so that the yellow bright red becomes pink red, and especially when mechanical printing such as roller printing, rotary screen printing or flat screen printing is adopted, the amount of paint applied to the fabric is limited due to the printing speed, and the like, and the base color cannot be covered due to thin slurry film. In order to overcome the influence of the covering power of overprint paste on the color light of printing paste, people adopt a plurality of measures, such as adopting high-quality adhesive and matching with base powder with the minimum color distortion degree to prepare the printing paste, researching a method of adopting overprint auxiliary agent, or adopting high-concentration paint for color overprint and the like. Although the hiding power is improved, they all sacrifice the print quality requirements to a greater or lesser extent. Regardless of the printing method adopted for pigment printing, the printing paste consists of pigment, adhesive, thickener and other additives; while adhesives with good quality adhesives are certainly the most straightforward way.
The adhesive used for the pigment printing of the acrylate has higher heat resistance and oil resistance, is environment-friendly and nontoxic, and is widely applied to the printing process. However, the acrylic emulsion has poor water resistance after being dried and poor wettability to pigment powder, so that the printing paint is not resistant to washing, has poor color development performance and low covering power to the ground color of cloth. Therefore, a silane modified acrylic emulsion for pigment printing with good water resistance and high hiding power and a preparation method thereof are needed.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the silane modified acrylic emulsion for pigment printing with good water resistance and high covering power and the preparation method thereof.
The purpose of the invention is realized by adopting the following technical scheme:
the silane modified acrylic emulsion for pigment printing comprises the following raw materials in parts by weight:
55-75 parts of butyl acrylate;
20-25 parts of methyl methacrylate;
2-5 parts of hydroxyethyl acrylate;
6-8 parts of isooctyl acrylate;
3-7 parts of acrylate silicon PU prepolymer;
0.001-0.005 part of ammonium persulfate;
1-2 parts of an emulsifier;
0.5-1 part of alpha-methacrylic acid;
60-80 parts of deionized water;
0.01-0.1 part of ammonia water.
Preferably, the emulsifier is SR-3025.
Preferably, the mass ratio of butyl acrylate, methyl methacrylate, hydroxyethyl acrylate and isooctyl acrylate is 18: 6.5:1:2, wherein the acrylate silicon PU prepolymer accounts for 5 percent of the total mass of butyl acrylate, methyl methacrylate, hydroxyethyl acrylate, isooctyl acrylate, acrylate silicon PU prepolymer and alpha-methacrylic acid.
Preferably, the acrylate silicon PU prepolymer is silok 3825.
The invention relates to a preparation method of silane modified acrylic emulsion for pigment printing, which comprises the following steps:
s1, stirring and mixing a proper amount of deionized water, alpha-methacrylic acid, ammonia water and part of emulsifier uniformly, adding butyl acrylate, methyl methacrylate, hydroxyethyl acrylate, isooctyl acrylate and acrylate silicon PU prepolymer, and stirring uniformly to obtain a mixed solution; taking a small amount of mixed solution as seed emulsion;
s2, dissolving ammonium persulfate in a proper amount of deionized water to obtain an ammonium persulfate solution; adding one third of ammonium persulfate solution into the remaining mixed solution in the step S1, and uniformly mixing to obtain a pre-emulsion;
s3, adding the rest of deionized water and the rest of emulsifier into the reaction container, heating to enable the temperature in the reaction container to reach 80 ℃, adding the seed emulsion, and adding one third of ammonium persulfate solution to initiate the seed emulsion after the temperature is raised to 80 ℃; after the seed emulsion is initiated, dripping the pre-emulsion; after the pre-emulsion is dripped, dripping the remaining one third of ammonium persulfate solution, and preserving the temperature for 30min to obtain a reaction product;
s4, cooling the reaction product to 40 ℃, adjusting the reaction product to be neutral, and filtering to obtain the silane modified acrylic emulsion for pigment printing.
Preferably, the dropping time of the pre-emulsion is 2.5 h.
Preferably, in step S3, after the pre-emulsion is added, the ammonium persulfate solution is added in 10-15 min.
Compared with the silane modified acrylic emulsion for pigment printing in the prior art, the silane modified acrylic emulsion for pigment printing has the following advantages:
according to the invention, silicon-carbon bonds, silicon-oxygen bonds and urethane bonds are introduced into acrylic resin through the acrylate-based silicone PU prepolymer, and the pigment powder can be well wetted and coated by grafting oleophylic groups and hydrophilic groups and curling molecular chain segments, so that the covering power and the water resistance of the printing coating are improved.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making creative efforts based on the embodiments of the present invention, belong to the protection scope of the present invention.
In each embodiment, deionized water is used as a dispersion medium, and is used in three parts, and the dispersion of each component is considered as the main part, and the dosage of each part is not strictly required, so that the final obtained acrylic emulsion is not substantially influenced.
Example 1
The embodiment provides a silane modified acrylic emulsion for pigment printing, which comprises the following raw materials in parts by weight:
55 parts of butyl acrylate;
20 parts of methyl methacrylate;
2 parts of hydroxyethyl acrylate;
6 parts of isooctyl acrylate;
38257 parts of silok;
0.001 part of ammonium persulfate;
1 part of an emulsifier;
0.5 part of alpha-methacrylic acid;
60 parts of deionized water;
0.01 part of ammonia water.
The emulsifier is SR-3025.
The embodiment provides a preparation method of silane modified acrylic emulsion for pigment printing, which comprises the following steps:
s1, stirring and mixing a proper amount of deionized water, alpha-methacrylic acid, ammonia water and part of emulsifier uniformly, adding butyl acrylate, methyl methacrylate, hydroxyethyl acrylate, isooctyl acrylate and acrylate silicon PU prepolymer, and stirring uniformly to obtain a mixed solution; taking a small amount of mixed solution as seed emulsion;
s2, dissolving ammonium persulfate in a proper amount of deionized water to obtain an ammonium persulfate solution; adding one third of ammonium persulfate solution into the remaining mixed solution in the step S1, and uniformly mixing to obtain a pre-emulsion;
s3, adding the rest of deionized water and the rest of emulsifier into the reaction container, heating to enable the temperature in the reaction container to reach 80 ℃, adding the seed emulsion, and adding one third of ammonium persulfate solution to initiate the seed emulsion after the temperature is raised to 80 ℃; after the seed emulsion is initiated, dripping the pre-emulsion; after the pre-emulsion is dripped, dripping the remaining one third of ammonium persulfate solution, and preserving the temperature for 30min to obtain a reaction product;
s4, cooling the reaction product to 40 ℃, adjusting the reaction product to be neutral, and filtering to obtain the silane modified acrylic emulsion for pigment printing.
The dropping time of the pre-emulsion was 2.5 h.
And step S3, after the pre-emulsion is completely dripped, the ammonium persulfate solution is completely dripped within 15 min. To avoid the residual monomer from not reacting completely.
Example 2
The silane modified acrylic emulsion for pigment printing of the embodiment comprises the following raw materials in parts by weight:
75 parts of butyl acrylate;
25 parts of methyl methacrylate;
5 parts of hydroxyethyl acrylate;
8 parts of isooctyl acrylate;
38253 parts of silok;
0.005 part of ammonium persulfate;
2 parts of an emulsifier;
1 part of alpha-methacrylic acid;
80 parts of deionized water;
0.1 part of ammonia water.
The emulsifier is SR-3025.
The preparation method of the silane-modified acrylic emulsion for pigment printing of the present example is the same as that of example 1.
Example 3
The preparation method of the silane-modified acrylic emulsion for pigment printing in this example is the same as that of example 1, except that the silane-modified acrylic emulsion for pigment printing in this example comprises the following raw materials in parts by weight:
61.56 parts of butyl acrylate;
22.23 parts of methyl methacrylate;
3.42 parts of hydroxyethyl acrylate;
6.82 parts of isooctyl acrylate;
38255 parts of silok;
0.005 part of ammonium persulfate;
2 parts of an emulsifier;
0.95 part of alpha-methacrylic acid;
80 parts of deionized water;
0.1 part of ammonia water.
The emulsifier is SR-3025.
Wherein the mass ratio of butyl acrylate, methyl methacrylate, hydroxyethyl acrylate and isooctyl acrylate is 18: 6.5:1:2, wherein the acrylate silicon PU prepolymer accounts for 5 percent of the total mass of butyl acrylate, methyl methacrylate, hydroxyethyl acrylate, isooctyl acrylate, acrylate silicon PU prepolymer and alpha-methacrylic acid.
Comparative example 1
The raw materials and preparation method of the silane modified acrylic emulsion for pigment printing provided by the comparative example are similar to those of the example 2, and only the difference is that the comparative example adopts monoene singly-terminated polyurethane XPU40 to replace silok 3825.
Comparative example 2
The raw materials and preparation method of the silane modified acrylic emulsion for pigment printing provided by the comparative example are similar to those of the example 2, and the difference is only that silok 3825 is not added in the comparative example.
Adding 20 parts of titanium dioxide, 2 parts of B-313 defoaming agent, 1 part of C-1115 thickening agent and 7 parts of deionized water into 70 parts of silane modified acrylic emulsion for pigment printing obtained in examples 1-3 and comparative examples 1-2, and mixing uniformly to obtain a rubber cement; the following tests were performed, respectively, and the test results are shown in table 1.
And (3) testing the covering power: and (3) printing a layer of white mucilage on the pure black polyester-cotton blended fabric by using a 120-mesh silk screen by adopting the same silk screen printing process, testing the whiteness of the polyester-cotton blended fabric printed with the white mucilage, and dividing the whiteness into grades according to the standard: grade 1 is less than 20%; 20 percent to 2 grade and 40 grade; 40 percent to 3 grade and less than 60 percent; 60 percent is more than or equal to 4 grade and less than 80 percent; 80 percent to 5 grade to 100 percent.
Detection of dryness: printing the mucilage on the pure cotton plain cloth according to the same printing process, baking the printed pure cotton plain cloth at 80 ℃ for 15min, and cooling for 2 h. Overlapping the printed parts of the plain cotton cloths, and pressing in a pressing machine at 140 deg.C for 10s under a pressure of 0.2kg/cm2The desizing condition is observed after the film is torn off, and if the desizing phenomenon occurs, the film is sticky and has poor dryness; conversely, the dryness is better. According to different desizing degrees, the method comprises the following steps: grade 1, the desizing area is more than or equal to 50 percent; 2, the desizing area is more than or equal to 20 percent and less than 50 percent; grade 3, desizing area is more than or equal to 10% and less than 20%; 4 grade, 5 percent to 10 percent of desizing area; 5 grade, the desizing area is less than 5 percent.
Measurement of washing resistance: putting the printed calico into a Siemens XQG80 roller washing machine, setting standard washing parameters, setting the washing time to be 1h, and carrying out first washing. And taking out the printed cloth after 1h, and observing whether the printed pattern of the printed cloth is washed and cracked. If the printed cloth is not washed and cracked, the printed cloth is put into a drum washing machine to be washed for the second time, and the printed cloth is washed for 1 hour under the same parameters. And then taking out the printed cloth, and observing whether the printed pattern is washed and cracked. And if the glass is not washed and cracked, washing for the third time. This was attempted until the printed pattern was washed open. And recording the maximum washing times of the printed patterns which are not washed and cracked, and then determining the washing times of the printed cloth.
TABLE 1 printed calico property test results of examples 1-3 and comparative examples 1-2
| Numbering | Hiding power/grade | Dryness/grade | Durable to wash with water/times |
| Example 1 | 4 | 3 | 10 |
| Example 2 | 4 | 4 | 10 |
| Example 3 | 4 | 3 | 11 |
| Comparative example 1 | 2 | 3 | 6 |
| Comparative example 2 | 2 | 2 | 2 |
The above embodiments are only some of the preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (7)
1. The silane modified acrylic emulsion for pigment printing is characterized by comprising the following raw materials in parts by weight:
55-75 parts of butyl acrylate;
20-25 parts of methyl methacrylate;
2-5 parts of hydroxyethyl acrylate;
6-8 parts of isooctyl acrylate;
3-7 parts of acrylate silicon PU prepolymer;
0.001-0.005 part of ammonium persulfate;
1-2 parts of an emulsifier;
0.5-1 part of alpha-methacrylic acid;
60-80 parts of deionized water;
0.01-0.1 part of ammonia water.
2. The silane-modified acrylic emulsion for pigment printing according to claim 1, wherein the emulsifier is SR-3025.
3. The silane-modified acrylic emulsion for pigment printing according to claim 2, wherein the mass ratio of butyl acrylate, methyl methacrylate, hydroxyethyl acrylate and isooctyl acrylate is 18: 6.5:1:2, wherein the acrylate silicon PU prepolymer accounts for 5 percent of the total mass of butyl acrylate, methyl methacrylate, hydroxyethyl acrylate, isooctyl acrylate, acrylate silicon PU prepolymer and alpha-methacrylic acid.
4. The silane-modified acrylic emulsion for pigment printing according to claim 3, wherein the acrylate-based silicone PU prepolymer is silok 3825.
5. A process for preparing the silane-modified acrylic emulsion for pigment printing according to any one of claims 1 to 4, comprising the steps of:
s1, stirring and mixing a proper amount of deionized water, alpha-methacrylic acid, ammonia water and part of emulsifier uniformly, adding butyl acrylate, methyl methacrylate, hydroxyethyl acrylate, isooctyl acrylate and acrylate silicon PU prepolymer, and stirring uniformly to obtain a mixed solution; taking a small amount of mixed solution as seed emulsion;
s2, dissolving ammonium persulfate in a proper amount of deionized water to obtain an ammonium persulfate solution; adding one third of ammonium persulfate solution into the remaining mixed solution in the step S1, and uniformly mixing to obtain a pre-emulsion;
s3, adding the rest of deionized water and the rest of emulsifier into the reaction container, heating to enable the temperature in the reaction container to reach 80 ℃, adding the seed emulsion, and adding one third of ammonium persulfate solution to initiate the seed emulsion after the temperature is raised to 80 ℃; after the seed emulsion is initiated, dripping the pre-emulsion; after the pre-emulsion is dripped, dripping the remaining one third of ammonium persulfate solution, and preserving the temperature for 30min to obtain a reaction product;
s4, cooling the reaction product to 40 ℃, adjusting the reaction product to be neutral, and filtering to obtain the silane modified acrylic emulsion for pigment printing.
6. The method for preparing silane modified acrylic emulsion for pigment printing according to claim 5, wherein the dropping time of the pre-emulsion is 2.5 h.
7. The method for preparing the silane-modified acrylic emulsion for pigment printing according to claim 6, wherein in step S3, after the pre-emulsion is completely added, the ammonium persulfate solution is completely added within 10-15 min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110951987.5A CN113563537B (en) | 2021-08-19 | 2021-08-19 | Silane modified acrylic emulsion for pigment printing and preparation method thereof |
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| CN202110951987.5A CN113563537B (en) | 2021-08-19 | 2021-08-19 | Silane modified acrylic emulsion for pigment printing and preparation method thereof |
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| CN113563537B CN113563537B (en) | 2023-05-09 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH083409A (en) * | 1994-04-20 | 1996-01-09 | Asahi Chem Ind Co Ltd | Water-based silicone-modified acrylate polymer emulsion |
| CN102101960A (en) * | 2010-12-24 | 2011-06-22 | 大连工业大学 | High-hydroxy silicon-acrylate aqueous glass coating emulsion and synthesis method thereof |
| CN104672403A (en) * | 2015-02-13 | 2015-06-03 | 浙江传化股份有限公司 | Environment-friendly silicon-acrylate emulsion and preparation method thereof |
-
2021
- 2021-08-19 CN CN202110951987.5A patent/CN113563537B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH083409A (en) * | 1994-04-20 | 1996-01-09 | Asahi Chem Ind Co Ltd | Water-based silicone-modified acrylate polymer emulsion |
| CN102101960A (en) * | 2010-12-24 | 2011-06-22 | 大连工业大学 | High-hydroxy silicon-acrylate aqueous glass coating emulsion and synthesis method thereof |
| CN104672403A (en) * | 2015-02-13 | 2015-06-03 | 浙江传化股份有限公司 | Environment-friendly silicon-acrylate emulsion and preparation method thereof |
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