CN115141512A - Water-based ink for pre-impregnated paper intaglio printing and synthesis process thereof - Google Patents
Water-based ink for pre-impregnated paper intaglio printing and synthesis process thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/102—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
- C09D11/033—Printing inks characterised by features other than the chemical nature of the binder characterised by the solvent
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Abstract
The invention provides water-based ink for gravure printing of pre-impregnated paper, which comprises the following raw materials: the coating comprises water-based resin, polyurethane resin, pigment, dispersing agent, 2-amino-2-methyl-1-propanol, surfactant, polyether modified siloxane, polyether siloxane copolymer, defoaming agent, isocyanate, ethylene glycol butyl ether, isothiazolinone and deionized water. The invention adopts a pure water system, and is green and environment-friendly; the ink system has low odor, and is safe and easy to operate; the water-based ink disclosed by the invention has good paper wettability and transfer performance on pre-impregnated paper, and is clear in printing transfer printing dots, good in leveling property and good in adhesive force of the ink on the paper. Solves various problems of the traditional ink printing of the pre-impregnated paper.
Description
Technical Field
The invention relates to the field of intaglio printing, in particular to water-based ink for pre-impregnated paper intaglio printing and a synthesis process thereof.
Background
Prepreg paper is an emerging base paper product that has just emerged in recent years, and the process of the paper differs from conventional decorative paper processing in that: the traditional decorative paper is untreated base paper, and is processed by gum dipping after being printed, so that the traditional process has high processing cost, strict requirements on gum dipping equipment and gum dipping process and unstable product quality. The pre-impregnated paper is self-glued paper, and a glue dipping process is not needed, so that the processing cost is greatly saved, and the performance is more stable. The cost statistics are compared as follows:
from the aspect of cost statistics, the prepreg paper saves the later impregnation cost, and has more market competitiveness under the condition that the performances of finished products are the same.
Prepreg paper printing is relatively demanding in terms of the printing process and also has higher performance and requirements for inks. The prior art inks used for printing pre-impregnated paper suffer from the following drawbacks: 1) The traditional ink is loose and porous after being dried, has good air permeability, is beneficial to the permeation of melamine glue after being soaked, and is suitable for printing of traditional Baoli paper and Chinese tissue paper (traditional paper for printing decorative paper). However, the pre-impregnated paper is gummy paper without good permeability, the traditional ink is adopted, the surface tension is too large, ink drops are transferred to the pre-impregnated paper from a printing plate network hole during printing and then polymerized into dots, the ink drops are contracted into ink drops, and the ink does not have good flatting and spreading before drying, so that printed matters have orange peel lines; thus, conventional decor paper inks are not suitable for pre-impregnated paper; 2) Because the pre-impregnated paper has high glue content and poor water absorption and the water-based ink has poor transferability on the surface, the water-based ink in the prior art cannot meet the transfer performance requirement of the pre-impregnated paper; 3) The water resistance, adhesive force and wettability of the existing gravure printing ink are poor in the printing effect of the pre-impregnated paper, and the printing quality requirement of the pre-impregnated paper cannot be met. Therefore, a water-based gravure ink which is well suitable for pre-impregnated paper is urgently needed.
Because the pre-impregnated paper is an emerging product, the market holding amount is small, and a gravure water-based ink product special for the pre-impregnated paper is lacked in the market, the existing pre-impregnated water-based ink has the following problems in printing the pre-impregnated paper: poor transferability, lost points, poor leveling property, low adhesive force, poor adaptability of the printing ink to the pre-impregnated paper and the like.
Disclosure of Invention
In order to solve the problems, the invention provides water-based ink for gravure printing of pre-impregnated paper and a preparation method thereof, and the following purposes are achieved: the pre-impregnated paper gravure printing water-based ink has the advantages of good transferability, no point loss, good leveling property, strong adhesive force and good adaptability to pre-impregnated paper.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the water-based ink for the gravure printing of the pre-impregnated paper comprises the following raw materials: the coating comprises water-based resin, polyurethane resin, pigment, dispersing agent, 2-amino-2-methyl-1-propanol, surfactant, polyether modified siloxane, polyether siloxane copolymer, defoaming agent, isocyanate, ethylene glycol butyl ether, isothiazolinone and deionized water.
Preferably, the aqueous resin is: any one of polyethyleneimine and quaternized polyethyleneimine, wherein the solid content of the resin is 35-38%; the polyurethane resin: the water-based hydroxyl-containing polyurethane modified acrylic emulsion has a hydroxyl value of 90-95mgKOH/g and a solid content of 41-43 percent.
Preferably, the dispersant: the active content is 50%; the humectant is any one of ethylene glycol butyl ether and ethylene glycol; the pigment is any one or combination of more of titanium dioxide, carbon black, phthalocyanine blue, lithol red and iron red.
Preferably, the water-based ink for gravure printing of the pre-impregnated paper comprises the following raw materials in parts by weight: 20-55 parts of water-based resin, 15-50 parts of polyurethane resin, 10-50 parts of pigment, 5-15 parts of dispersing agent, 1-4 parts of 2-amino-2-methyl-1-propanol, 1-2 parts of surfactant, 0.8-2 parts of polyether modified siloxane, 1.5-2 parts of polyether siloxane copolymer, 0.2-0.4 part of defoaming agent, 3-6 parts of flatting agent, 0.2-0.8 part of isocyanate, 5-15 parts of ethylene glycol monobutyl ether, 0.1-0.5 part of isothiazolinone and 78g of deionized water.
Further preferably, the water-based ink for gravure printing of the pre-impregnated paper comprises the following raw materials in parts by weight: the raw materials by weight portion are: 45-55 parts of water-based resin, 40-50 parts of polyurethane resin, 50 parts of pigment, 10 parts of dispersant, 2-4 parts of 2-amino-2-methyl-1-propanol, 0.8 part of surfactant, 0.8-2 parts of polyether modified siloxane, 1.5-2 parts of polyether siloxane copolymer, 0.2-0.4 part of defoaming agent, 3-6 parts of flatting agent, 0.2-0.8 part of isocyanate, 15 parts of ethylene glycol monobutyl ether, 0.2 part of isothiazolinone and 78 parts of deionized water.
Further preferably, the water-based ink for gravure printing of pre-impregnated paper comprises the following raw materials in parts by weight: the raw materials by weight portion are: 50 parts of polyethyleneimine, 45 parts of polyurethane resin, 50 parts of pigment, 10 parts of dispersant, 4 parts of 2-amino-2-methyl-1-propanol, 0.8 part of surfactant, 2 parts of polyether modified siloxane, 2 parts of polyether siloxane copolymer, 0.2 part of defoaming agent, 6 parts of leveling agent, 0.8 part of isocyanate, 15 parts of ethylene glycol butyl ether, 0.2 part of isothiazolinone and 78g of deionized water.
A synthesis process of water-based ink for gravure printing of pre-impregnated paper comprises the following steps: preparing varnish, preparing color paste and preparing a finished product.
The preparation of the varnish: uniformly mixing 2-amino-2-methyl-1-propanol with part of deionized water to obtain a solution A; uniformly mixing the water-based resin and part of polyurethane resin to obtain a solution B; uniformly mixing the solution A and the solution B to obtain a mixed solution C, and then heating the mixed solution C to 60-70 ℃ by adopting a water bath; and adding the rest polyurethane resin into the mixed solution C, introducing into a dispersion machine, and dispersing for 10-20 minutes at a stirring speed of 500-700r/min to obtain the varnish.
Preparing color paste: sequentially mixing the dispersing agent, the polyether modified siloxane, the defoaming agent, the rest deionized water, the ethylene glycol monobutyl ether and the pigment, dispersing for 60 +/-10 minutes at the stirring speed of 600-800 r/min, putting into a grinding machine, grinding for 60 +/-10 minutes at the rotating speed of 1280r/min, and grinding until the particle size is 5-8 mu m to obtain the color paste.
The preparation of a finished product: mixing the ink mixing oil, the color paste and the rest raw materials, and dispersing in a dispersion machine at a stirring speed of 200-300r/min for 40 +/-5 minutes to obtain the finished product of the ink.
The invention has the following beneficial effects:
(1) The defect that the traditional water-based ink is not suitable for pre-impregnated paper is overcome, and the water-based gravure printing ink suitable for the pre-impregnated paper is provided, and has strong adhesive force to the pre-impregnated paper, good drying property, good leveling property and good transferability;
(2) The invention adopts a pure water system, and is green and environment-friendly; the synthesis system has low odor, safety and easy operation; the water-based gravure printing ink has good paper wettability and transfer performance to pre-impregnated paper; the invention solves a plurality of problems of printing pre-impregnated paper, and has the advantages of clear printing transfer printing dots, full solid, bright color, high drying speed and the like.
(3) The tinting strength of the water-based gravure printing ink reaches 98Abs, and the adhesive tape is torn by using a 3M-600 adhesion test without decolorization; soaking in 90 deg.C hot water for 30min without decolorization; aging resistance detection is carried out, and the ink has no obvious change; the storage stability is good; the drying speed can reach 80m/min, and the coating has no shrinkage cavity and small surface tension. The printing effect is good when the ink is used for pre-impregnated paper gravure printing.
Detailed Description
The present invention is further illustrated by the following specific examples, which are not intended to limit the invention in any way. In the examples, all reagents were commercially available. The following description is presented to enable one of ordinary skill in the art to make and use the present invention as provided within the context of a fully functional computer.
Example 1 Water-based ink for gravure printing of Pre-impregnated paper
The water-based ink for gravure printing of the pre-impregnated paper comprises the following raw materials in parts by weight: 50 parts of polyethyleneimine, 45 parts of polyurethane resin, 50 parts of carbon black, 10 parts of a dispersing agent, 2-amino-2-methyl-1-propanol, 0.8 part of a surfactant, 0.8 part of polyether modified siloxane, 1.5 parts of polyether siloxane copolymer, 0.4 part of a defoaming agent, 0.2 part of isocyanate, 15 parts of ethylene glycol butyl ether, 0.2 part of isothiazolinone and 78 parts of deionized water.
The polyethylene imine: the solid content is 35%;
the polyurethane resin: the water-based hydroxyl-containing polyurethane modified acrylic emulsion has the following hydroxyl value: 90mgKOH/g, solid content 41%;
the dispersing agent is as follows: a water-based polyurethane dispersant; the active ingredients are N- (2-aminoethyl) aminoethane sodium sulfonate and 2- [ (2-aminoethyl) amino ] ethanesulfonic acid sodium salt, and the total content of the active ingredients is 50 percent (mass percentage); purchased from Jiangsu Pule Biotechnology Co., ltd, and the model is as follows: 34730-59-1;
the surfactant: is nonylphenol polyoxyethylene ether and acetylene glycol ethoxy compound, and has the model of SAGO-3675;
the defoaming agent comprises the following components: a silicone emulsion;
the type of the isocyanate is YL-W6880E;
the isothiazolinone: the mass percentage content is 20 percent.
A synthesis process of water-based ink for gravure printing of pre-impregnated paper comprises the following steps:
step 1) preparation of varnish
(1) Mixing 1g of 2-amino-2-methyl-1-propanol and 48g of deionized water uniformly to obtain a solution A;
(2) uniformly mixing 50g of polyethyleneimine and 15g of polyurethane resin to obtain a solution B;
(3) and uniformly mixing the solution A and the solution B to obtain a mixed solution C, and then heating the mixed solution C to 60 ℃ by adopting a water bath. 30g of polyurethane resin was added to the mixed solution C, and the mixture was introduced into a dispersion machine and dispersed at a stirring speed of 500r/min for 15 minutes to obtain varnish.
Step 2) preparing color paste
Adding 10g of dispersing agent, 0.8g of polyether modified siloxane, 0.2g of defoaming agent, 30g of deionized water, 15g of ethylene glycol monobutyl ether and 50g of carbon black into a dispersion machine in sequence for mixing, dispersing in the dispersion machine for 60 minutes at a stirring speed of 600r/min, putting into a grinding machine, grinding for 60 minutes at a rotating speed of 1250r/min, and grinding until the particle size is 5 mu m to obtain the color paste.
Step 3) preparing finished products
Mixing the varnish obtained in the step 1), the color paste obtained in the step 2), 1.5g of polyether siloxane copolymer, 0.8g of surfactant, 0.2g of defoaming agent, 0.2g of isocyanate, 0.2g of isothiazolinone and 1g of 2-amino-2-methyl-1-propanol, and dispersing in a dispersion machine at a stirring speed of 200r/min for 40 minutes to obtain the finished product of ink.
The results of the performance testing of the finished product prepared in example 1 are shown in table 1.
TABLE 1
As can be seen from Table 1, the ink fineness was 8um, pH value was 8.6, tinting strength was 100Abs, and viscosity was 24 "; the adhesive tape is torn by using a 3M-600 adhesive force test, and no decoloration is caused; soaking in 90 deg.C hot water for 30min without decolorization; aging resistance detection is carried out, and the ink has no obvious change; the storage stability is good; but the drying speed is only 70m/min, the coating film has shrinkage cavities, the leveling property is poor, and the surface tension is overlarge.
Example 2 Water-based ink for gravure printing of Pre-impregnated paper
The water-based ink for the gravure printing of the pre-impregnated paper comprises the following raw materials in parts by weight: 45 parts of polyethyleneimine, 50 parts of polyurethane resin, 50 parts of carbon black, 10 parts of a dispersing agent, 2.4 parts of 2-amino-2-methyl-1-propanol, 0.8 part of a surfactant, 1.5 parts of polyether modified siloxane, 2 parts of a polyether siloxane copolymer, 0.2 part of a defoaming agent, 3 parts of a leveling agent (KYC 616), 0.6 part of isocyanate, 15 parts of ethylene glycol butyl ether, 0.2 part of isothiazolinone and 78 parts of deionized water.
The weight ratio of the polyethyleneimine: the solid content is 38%;
the polyurethane resin: the water-based hydroxyl-containing polyurethane modified acrylic emulsion has the following hydroxyl value: 95mgKOH/g, solid content 43%;
the dispersing agent is as follows: a water-based polyurethane dispersant; the active ingredients are N- (2-aminoethyl) aminoethane sodium sulfonate and 2- [ (2-aminoethyl) amino ] ethanesulfonic acid sodium salt, and the total content of the active ingredients is 50 percent (mass percentage);
the surfactant: is nonylphenol polyoxyethylene ether and acetylene glycol ethoxy compound, and has the model of SAGO-3675;
the defoaming agent comprises the following components: a silicone emulsion;
and (3) leveling agent: the acrylic acid modified copolymer is prepared from 50 mass percent of active ingredients, and the type is KYC616;
the type of the isocyanate is YL-W6880E;
the isothiazolinone: the mass percentage content is 20 percent.
A synthesis process of water-based ink for gravure printing of pre-impregnated paper comprises the following steps:
step 1) preparation of varnish
(1) Uniformly mixing 1.4g of 2-amino-2-methyl-1-propanol and 48g of deionized water to obtain a solution A;
(2) uniformly mixing 45g of polyethyleneimine and 20g of polyurethane resin to obtain a solution B;
(3) and uniformly mixing the solution A and the solution B to obtain a mixed solution C, and then heating the mixed solution C to 70 ℃ by adopting a water bath. 30g of polyurethane resin was added to the mixed solution C, and the mixture was introduced into a dispersion machine and dispersed at a stirring speed of 600r/min for 15 minutes to obtain varnish.
Step 2) preparing color paste
Adding 10g of dispersing agent, 1.5g of polyether modified siloxane, 0.2g of defoaming agent, 30g of deionized water, 15g of ethylene glycol monobutyl ether and 50g of carbon black into a dispersion machine in sequence for mixing, dispersing in the dispersion machine for 60 minutes at a stirring speed of 800r/min, then putting into a grinding machine for grinding for 60 minutes at a rotating speed of 1300r/min, and grinding until the particle size is 8 mu m to obtain the color paste.
Step 3) preparing the finished product
Mixing the varnish obtained in the step 1), the color paste obtained in the step 2), 2g of polyether siloxane copolymer, 3g of a flatting agent KYC-616, 0.8g of a surfactant, 0.2g of a defoaming agent, 0.6g of isocyanate, 0.2g of isothiazolinone and 1g of 2-amino-2-methyl-1-propanol, and dispersing for 40 minutes in a dispersing machine at a stirring speed of 300r/min to obtain the finished product of ink.
The results of the performance testing of the finished product prepared in example 2 are shown in table 2.
TABLE 2
As can be seen from Table 2, the ink fineness was 8um, pH was 8.9, tinting strength was 105Abs, and viscosity was 25 "; the adhesive tape is torn by using a 3M-600 adhesive force test, and no decoloration is caused; soaking in 90 deg.C hot water for 30min without decolorization; aging resistance detection is carried out, and the ink has no obvious change; the storage stability is good; the drying speed is 75m/min; however, the coating film still had a small amount of craters and had a surface tension of 41mN/m.
Example 3 Water-based ink for gravure printing of Pre-impregnated paper
The water-based ink for gravure printing of the pre-impregnated paper comprises the following raw materials in parts by weight: 50 parts of polyethyleneimine, 45 parts of polyurethane resin, 50 parts of carbon black, 10 parts of a dispersing agent, 4 parts of 2-amino-2-methyl-1-propanol, 0.8 part of a surfactant, 2 parts of polyether modified siloxane, 2 parts of a polyether siloxane copolymer, 0.2 part of a defoaming agent, 6 parts of a leveling agent (KYC 616), 0.8 part of isocyanate, 15 parts of ethylene glycol butyl ether, 0.2 part of isothiazolinone and 78 parts of deionized water.
The polyethylene imine: the solid content is 36%;
the polyurethane resin: the water-based hydroxyl-containing polyurethane modified acrylic emulsion has the following hydroxyl value: 92mgKOH/g, solid content 42%;
the dispersing agent is as follows: a water-based polyurethane dispersant; the active ingredients are N- (2-aminoethyl) aminoethane sodium sulfonate and 2- [ (2-aminoethyl) amino ] ethanesulfonic acid sodium salt, and the total content of the active ingredients is 50 percent (mass percentage); purchased from Jiangsu Pule Biotechnology Co., ltd, and the model is as follows: 34730-59-1;
the surfactant: is nonylphenol polyoxyethylene ether and acetylene glycol ethoxy compound, and has the model of SAGO-3675;
the defoaming agent comprises the following components: a silicone emulsion;
and (3) leveling agent: the acrylic acid modified copolymer is prepared from 50 mass percent of active ingredients, and the type is KYC616;
the type of the isocyanate is YL-W6880E;
the isothiazolinone: the mass percentage content is 20 percent.
A synthesis process of water-based ink for gravure printing of pre-impregnated paper comprises the following steps:
step 1) preparation of varnish
(1) Uniformly mixing 2g of 2-amino-2-methyl-1-propanol and 48g of deionized water to obtain a solution A;
(2) uniformly mixing 50g of polyethyleneimine and 15g of polyurethane resin to obtain a solution B;
(3) and uniformly mixing the solution A and the solution B to obtain a mixed solution C, and then heating the mixed solution C to 65 ℃ by adopting a water bath. 30g of polyurethane resin was added to the mixed solution C, and the mixture was introduced into a dispersion machine and dispersed at a stirring speed of 550r/min for 15 minutes to obtain varnish.
Step 2) preparing color paste
Sequentially adding 10g of dispersing agent, 2g of polyether modified siloxane, 0.2g of defoaming agent, 30g of deionized water, 15g of butyl glycol ether and 50g of carbon black into a dispersion machine for mixing, dispersing in the dispersion machine for 60 minutes at the stirring speed of 700r/min, putting into a grinding machine for grinding for 60 minutes at the rotating speed of 1280r/min, and grinding until the particle size is 7 mu m to obtain the color paste.
Step 3) preparing the finished product
Mixing the varnish obtained in the step 1), the color paste obtained in the step 2), 2g of polyether siloxane copolymer, 6g of a flatting agent KYC-616, 0.8g of a surfactant, 0.2g of a defoaming agent, 0.8g of isocyanate, 0.2g of isothiazolinone and 2g of 2-amino-2-methyl-1-propanol, and dispersing in a dispersion machine at a stirring speed of 250r/min for 40 minutes to obtain the finished product of ink.
The results of the performance testing of the finished product prepared in example 3 are shown in table 3.
TABLE 3
As can be seen from Table 3, the ink fineness was 8um, the pH value was 9.2, the tinting strength was 98Abs, and the viscosity was 24 "; the adhesive tape is torn by using a 3M-600 adhesive force test, and no decoloration is caused; soaking in 90 deg.C hot water for 30min without decolorization; aging resistance detection is carried out, and the ink has no obvious change; the storage stability is good; the drying speed is 80m/min, the coating film has no shrinkage cavity, and the surface tension is 38mN/m.
Example 4 Water-based ink for gravure printing of Pre-impregnated paper
The water-based ink for the gravure printing of the pre-impregnated paper comprises the following raw materials in parts by weight: 55 parts of polyethyleneimine, 40 parts of polyurethane resin, 50 parts of carbon black, 10 parts of a dispersing agent, 4 parts of 2-amino-2-methyl-1-propanol, 0.8 part of a surfactant, 2 parts of polyether modified siloxane, 2 parts of a polyether siloxane copolymer, 0.2 part of a defoaming agent, 6 parts of a leveling agent (KYC 616), 0.8 part of isocyanate, 15 parts of ethylene glycol butyl ether, 0.2 part of isothiazolinone and 78 parts of deionized water.
The polyethylene imine: the solid content is 37 percent;
the polyurethane resin: is a waterborne hydroxyl-containing polyurethane modified acrylic emulsion, and the hydroxyl value is as follows: 94mgKOH/g, solid content 43%;
the dispersing agent is as follows: a water-based polyurethane dispersant; the active ingredients are N- (2-aminoethyl) aminoethane sodium sulfonate and 2- [ (2-aminoethyl) amino ] ethanesulfonic acid sodium salt, and the total content of the active ingredients is 50 percent (mass percentage); purchased from Jiangsu Pule Biotechnology Co., ltd, and the model is as follows: 34730-59-1;
the surfactant: is nonylphenol polyoxyethylene ether and acetylene glycol ethoxy compound, and has the model of SAGO-3675;
the defoaming agent comprises the following components: a silicone emulsion;
and (3) leveling agent: the acrylic acid modified copolymer is prepared from 50 mass percent of active ingredients, and the type is KYC616;
the type of the isocyanate is YL-W6880E;
the isothiazolinone: the mass percentage content is 20 percent.
A synthesis process of water-based ink for gravure printing of pre-impregnated paper comprises the following steps:
step 1) preparation of varnish
(1) Uniformly mixing 2g of 2-amino-2-methyl-1-propanol and 48g of deionized water to obtain a solution A;
(2) uniformly mixing 55g of polyethyleneimine and 10g of polyurethane resin to obtain a solution B;
(3) and uniformly mixing the solution A and the solution B to obtain a mixed solution C, and then heating the mixed solution C to 62 ℃ by adopting a water bath. 30g of polyurethane resin was added to the mixed solution C, and the mixture was introduced into a dispersion machine and dispersed at a stirring speed of 580r/min for 15 minutes to obtain varnish.
Step 2) preparing color paste
And sequentially adding 10g of dispersing agent, 2g of polyether modified siloxane, 0.2g of defoaming agent, 30g of deionized water, 15g of butyl glycol ether and 50g of carbon black into a dispersion machine for mixing, dispersing for 60 minutes in the dispersion machine at a stirring speed of 650r/min, putting into a grinding machine, grinding for 60 minutes at a rotating speed of 1260r/min, and grinding until the particle size is 6 mu m to obtain the color paste.
Step 3) preparing the finished product
Mixing the varnish obtained in the step 1), the color paste obtained in the step 2), 2g of polyether siloxane copolymer, 6g of a flatting agent KYC-616, 0.8g of surfactant, 0.2g of defoaming agent, 0.8g of isocyanate, 0.2g of isothiazolinone and 2g of 2-amino-2-methyl-1-propanol, and dispersing for 40 minutes in a dispersing machine at a stirring speed of 220r/min to obtain the finished product of ink.
The results of the performance testing of the finished product prepared in example 4 are shown in table 4.
TABLE 4
As can be seen from Table 4, the ink fineness was 8um, pH 9.2, tinting strength was 99Abs, and viscosity was 23 "; soaking in 90 deg.C hot water for 30min without decolorization; aging resistance detection is carried out, and the ink has no obvious change; the storage stability is good; the drying speed is 80m/min, the coating film has no shrinkage cavity, and the surface tension is 38mN/m; but the tape was torn with a 3M-600 adhesion test and slightly discolored.
In summary, as can be seen from tables 1 to 4, the differences in the raw materials and the compounding ratios used have a great influence on the product, and example 3 is the most preferable example.
The ink and the process prepared by the invention also have the following beneficial effects: 1) The ink has no volatile and flammable solvent in the production process and the use process, so that the potential safety hazard in the production and use processes is avoided; 2) No VOC is discharged in the ink production process and the ink use process; 3) The printed matter printed by the pre-impregnated paper water-based gravure ink has no odor and high environmental protection; 4) The pre-impregnated paper water-based gravure ink has good transferability and leveling property, and solves the problem that the traditional decorative paper ink cannot meet the requirement of printing decorative paper on pre-impregnated paper.
The purchase factories of the raw materials of the invention:
the polyethylene imine: purchased from Guangzhou fast commercial and trade company, model A-1201;
the polyurethane resin: available from Shanghai Beltt New Material science and technology Co., ltd, model No. PU7310;
the polyether modified siloxane: purchased from Guangzhou City banquet ancient trade Co., ltd, with the model number KYC-648;
the polyether siloxane copolymer: purchased from Guangzhou City banquet ancient trade Co., ltd, with the model number KYC641;
the organic silicon emulsion comprises the following components: purchased from Shandong Rui printed materials, inc. under the model Tego-AIREX902W;
the isothiazolinone: purchased from Shandong Rui print materials, inc. and having the model number: and (5) CMQ.
The pigment in examples 1-4 is carbon black, and the carbon black is replaced by any one or combination of titanium dioxide, phthalocyanine blue, lithol red and iron red, and only the color of the ink is changed without influencing the chemical performance of the ink. Therefore, in actual production, the selection of the pigment can be carried out according to specific requirements, and no examples are listed in the invention.
The percentages stated in the present invention are percentages by mass, unless otherwise specified.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The water-based ink for the gravure printing of the pre-impregnated paper is characterized by comprising the following components in percentage by weight: the method comprises the following raw materials: the coating comprises water-based resin, polyurethane resin, pigment, dispersing agent, 2-amino-2-methyl-1-propanol, surfactant, polyether modified siloxane, polyether siloxane copolymer, defoaming agent, isocyanate, ethylene glycol butyl ether, isothiazolinone and deionized water.
2. The water-based ink for gravure printing of prepreg paper according to claim 1, wherein:
the water-based resin is as follows: any one of polyethyleneimine and quaternized polyethyleneimine, wherein the solid content of the resin is 35-38%;
the polyurethane resin: the water-based hydroxyl-containing polyurethane modified acrylic emulsion has a hydroxyl value of 90-95mgKOH/g and a solid content of 41-43 percent.
3. An aqueous ink for gravure printing of pre-impregnated paper according to claim 1, characterized in that: the dispersant is as follows: the active content is 50%; the humectant is any one of ethylene glycol butyl ether and ethylene glycol; the pigment is any one or combination of more of titanium dioxide, carbon black, phthalocyanine blue, lithol red and iron red.
4. The water-based ink for gravure printing of prepreg paper according to claim 1, wherein: the raw materials in parts by weight are as follows: 20-55 parts of water-based resin, 15-50 parts of polyurethane resin, 10-50 parts of pigment, 5-15 parts of dispersant, 1-4 parts of 2-amino-2-methyl-1-propanol, 1-2 parts of surfactant, 0.8-2 parts of polyether modified siloxane, 1.5-2 parts of polyether siloxane copolymer, 0.2-0.4 part of defoaming agent, 3-6 parts of flatting agent, 0.2-0.8 part of isocyanate, 5-15 parts of ethylene glycol butyl ether, 0.1-0.5 part of isothiazolinone and 78g of deionized water.
5. The water-based ink for gravure printing of prepreg paper according to claim 1, wherein: the raw materials by weight portion are: 45-55 parts of water-based resin, 40-50 parts of polyurethane resin, 50 parts of pigment, 10 parts of dispersing agent, 2-4 parts of 2-amino-2-methyl-1-propanol, 0.8 part of surfactant, 0.8-2 parts of polyether modified siloxane, 1.5-2 parts of polyether siloxane copolymer, 0.2-0.4 part of defoaming agent, 3-6 parts of flatting agent, 0.2-0.8 part of isocyanate, 15 parts of ethylene glycol butyl ether, 0.2 part of isothiazolinone and 78 parts of deionized water.
6. The water-based ink for gravure printing of prepreg paper according to claim 1, wherein: the raw materials by weight portion are: 50 parts of polyethyleneimine, 45 parts of polyurethane resin, 50 parts of pigment, 10 parts of dispersant, 4 parts of 2-amino-2-methyl-1-propanol, 0.8 part of surfactant, 2 parts of polyether modified siloxane, 2 parts of polyether siloxane copolymer, 0.2 part of defoaming agent, 6 parts of leveling agent, 0.8 part of isocyanate, 15 parts of ethylene glycol butyl ether, 0.2 part of isothiazolinone and 78g of deionized water.
7. A synthetic process of water-based ink for gravure printing of pre-impregnated paper is characterized by comprising the following steps of: the method comprises the following steps: preparing varnish, preparing color paste and preparing a finished product.
8. The process for synthesizing an aqueous ink for gravure printing of prepreg paper according to claim 7, wherein: preparing the varnish: uniformly mixing 2-amino-2-methyl-1-propanol with part of deionized water to obtain a solution A; uniformly mixing the water-based resin and part of polyurethane resin to obtain a solution B; uniformly mixing the solution A and the solution B to obtain a mixed solution C, and then heating the mixed solution C to 60-70 ℃ by adopting a water bath; and adding the rest polyurethane resin into the mixed solution C, introducing into a dispersion machine, and dispersing for 10-20 minutes at a stirring speed of 500-700r/min to obtain the varnish.
9. The process for synthesizing an aqueous ink for gravure printing of prepreg paper according to claim 7, wherein: preparing color paste: sequentially mixing the dispersing agent, the polyether modified siloxane, the defoaming agent, the rest deionized water, the ethylene glycol monobutyl ether and the pigment, dispersing for 60 +/-10 minutes at the stirring speed of 600-800 r/min, putting into a grinding machine, grinding for 60 +/-10 minutes at the rotating speed of 1280r/min, and grinding until the particle size is 5-8 mu m to obtain the color paste.
10. The process of claim 7 for synthesizing the water-based ink for gravure printing of pre-impregnated paper, which is characterized in that: the preparation of a finished product: mixing the ink mixing oil, the color paste and the rest raw materials, and dispersing in a dispersion machine at a stirring speed of 200-300r/min for 40 +/-5 minutes to obtain the finished product of the ink.
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| CN115584162A (en) * | 2022-11-23 | 2023-01-10 | 山东东宇鸿翔柜橱材料有限公司 | Water-based ink for gravure printing of PVC (polyvinyl chloride) seal strip and synthesis process thereof |
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