CN113388284A - Heat-resistant water-sealing ink and preparation method thereof - Google Patents
Heat-resistant water-sealing ink and preparation method thereof Download PDFInfo
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- CN113388284A CN113388284A CN202110732077.8A CN202110732077A CN113388284A CN 113388284 A CN113388284 A CN 113388284A CN 202110732077 A CN202110732077 A CN 202110732077A CN 113388284 A CN113388284 A CN 113388284A
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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
- C09D11/106—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C09D11/107—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from unsaturated acids or derivatives thereof
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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
- C09D11/10—Printing inks based on artificial resins
- C09D11/106—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
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Abstract
The invention provides heat-resistant water-sealing ink and a preparation method thereof, wherein the heat-resistant water-sealing ink comprises the following raw material components in percentage by weight: 10-20% of modified styrene-acrylic resin liquid, wherein the modified styrene-acrylic resin liquid comprises the following raw material components in percentage by weight: 30-40% of deionized water, 8-10% of ammonia water, 20-30% of cross-linking agent, 0.02-0.05% of defoaming agent and 30-35% of modified styrene-acrylic resin; 40-60% of heat-resistant acrylic emulsion; 20 to 40 percent of high-concentration color paste. The heat-resistant water-sealing ink disclosed by the invention can effectively improve the heat resistance of the heat-resistant water-based ink by adopting the combination of the modified styrene-acrylic resin liquid and the heat-resistant acrylic emulsion, the heat-resistant water-sealing ink can resist the pressure and the temperature in the heat sealing process, the heat-resistant water-sealing ink is not easy to fall off from a Tyvek material, the ink is not easy to stick on a heat-sealing cutter, and the problem that the heat-sealing cutter cannot seal due to the adhesion of the ink and the cutter has to be stopped to clean so as to influence the production efficiency is avoided.
Description
Technical Field
The invention relates to the technical field of printing materials, in particular to heat-resistant water-sealing ink and a preparation method thereof.
Background
At present, Tyvek is a unique non-woven fabric product released by DuPont company, is a high-density polyethylene material prepared by adopting a flash evaporation method spun-bonding process of DuPont, and the unique material combines the characteristics of paper, films and woven fabrics into a whole, has the performances of water resistance, air permeability, light weight, toughness, tear resistance, puncture resistance, high reflectivity, ultraviolet resistance and the like, and has wide application in the industries of making labels, hang tags, flags and labels, and also in medical packaging and food packaging due to the excellent characteristics.
However, since it is made of a high density polyethylene material, there is a problem that the material surface is highly inert and is not easily printed. At present, a part of the printing industry adopts solvent-based ink for printing, although the solvent-based ink has the characteristics of strong adhesive force and good heat resistance of the whole ink, the solvent-based ink can release a large amount of harmful gas in the drying process to seriously pollute the atmospheric environment, toxic substances can also remain on the surface of a Tyvek material after printing is finished, the solvent-based ink has certain harm to the human body, and the solvent-based ink is about to be eliminated along with the treatment of environmental pollution of various countries and the enhancement of environmental protection and health consciousness of people, namely the water-based replacement of the printing ink in the printing industry is more and more important.
Due to the particularity of the Tyvek material, the surface of the Tyvek material is irregular and fibrous, uneven, when the ink is printed on the Tyvek material, the thickness of the coating of the ink is different in different places, the adhesion fastness of the water-based printing ink is low, and the water-based printing ink cannot permeate and absorb the ink, namely the adhesion force of the ink printed on the Tyvek material is much lower than that of other materials. Meanwhile, in the post-processing procedure of the Tyvek material, the back surface of the Tyvek material is generally coated with hot melt adhesive and used for heat sealing, a heat sealing cutter is selected for sealing in the sealing mode, and certain pressure and temperature are achieved in the heat sealing process. However, because the common ink has poor heat resistance, the ink is easy to fall off from the super-strong material, and a heat-sealing cutter can be full of the ink after long-time processing, so that the machine needs to be stopped to clean the ink, and the processing efficiency can be seriously influenced.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
Therefore, a first aspect of the present invention is to provide a heat-resistant water-sealing ink.
In a second aspect of the present invention, a method for preparing a heat-resistant water-sealing ink is provided.
In view of the above, according to a first aspect of the present invention, there is provided a heat-resistant water-sealing ink, which comprises the following raw material components by weight: 10-20% of modified styrene-acrylic resin liquid, wherein the modified styrene-acrylic resin liquid comprises the following raw material components in percentage by weight: 30-40% of deionized water, 8-10% of ammonia water, 20-30% of cross-linking agent, 0.02-0.05% of defoaming agent and 30-35% of modified styrene-acrylic resin; 40-60% of heat-resistant acrylic emulsion; 20 to 40 percent of high-concentration color paste.
The heat-resistant water-sealing ink provided by the invention is applied to a Tewei strong material, and comprises modified styrene-acrylic resin liquid, heat-resistant acrylic emulsion and high-concentration color paste, wherein the modified styrene-acrylic resin liquid and the heat-resistant acrylic emulsion are used in combination to effectively improve the heat resistance of the heat-resistant water-sealing ink.
Compared with the conventional resin liquid, the modified styrene-acrylic resin liquid has excellent heat sealing resistance and better solubility, can improve the properties of wetting, transfer and the like, and is not easy to adhere under the use conditions of high temperature and certain pressure.
Specifically, the crosslinking agent can increase the heat-resistant sealing temperature of the modified styrene-acrylic resin solution, and further increase the heat-resistant sealing temperature of the whole system (heat-resistant water-sealing ink), so that the dried heat-resistant water-sealing ink can withstand higher temperature.
In a possible design, further, 10 to 20 percent of modified styrene-acrylic resin liquid, 40 to 50 percent of heat-resistant acrylic emulsion and 20 to 40 percent of high-concentration color paste; the heat-resistant water-sealing ink also comprises the following raw material components in percentage by weight: 1 to 3 percent of filler; 1 to 3 percent of slipping agent; 1 to 3 percent of wax powder.
In the design, the heat-resistant water-sealing ink also comprises a filler, a slipping agent and wax powder, wherein the viscosity of the whole system is hardly influenced after the filler is added, but the heat-resistant adhesion of the system can be improved, so that the heat resistance of the heat-resistant water-sealing ink is directly improved. The slipping agent has the slipping and releasing characteristics, so that the surface of the heat-resistant water-sealing ink is smooth, the heat-resistant water-sealing ink is not easy to adhere to a heat-sealing cutter, and the anti-adhesion performance of the heat-resistant water-sealing ink is improved. The addition of the wax powder can improve the anti-adhesion performance of the whole system of the heat-resistant water-sealing ink, and meanwhile, the wax powder has a high melting point, so that the heat resistance performance of the heat-resistant water-sealing ink can be improved, for example, the heat-resistant time and the heat-resistant temperature of the heat-resistant water-sealing ink are prolonged, and the heat-resistant water-sealing ink is not easy to adhere to a heat-sealing cutter.
In one possible design, further, the filler comprises silicon alkoxide microsphere powder, the particle size of the silicon alkoxide microsphere powder is greater than or equal to 2 μm and less than or equal to 5 μm, the oil absorption value of the silicon alkoxide microsphere powder is greater than or equal to 0.5 and less than or equal to 0.9, and the heat stability temperature of the silicon alkoxide microsphere powder is greater than or equal to 900 ℃.
In the design, the filler comprises silicon alkoxide microsphere powder, the siloxane micropowder is a high molecular polymer, the particle size of the silicon alkoxide microsphere powder is more than or equal to 2 micrometers and less than or equal to 5 micrometers, the oil absorption value of the silicon alkoxide microsphere powder is extremely low, the oil absorption value is more than or equal to 0.5 and less than or equal to 0.9, and after the silicon alkoxide microsphere powder is added into a system, the year of the system is hardly influenced, and the heat-resistant adhesion of the system can be improved. Meanwhile, the thermal stability temperature of the silicon alkoxide microsphere powder is more than or equal to 900 ℃, which is beneficial to improving the heat resistance of the whole system.
In one possible design, further, the slip agent is polydimethylsiloxane.
In the design, the slipping agent is polydimethylsiloxane and is a macromolecular auxiliary agent, such as Dow Corning DC51, the slipping property of the surface of the heat-resistant water-sealing ink after film formation can be improved, the friction coefficient is reduced, and the ink is not easy to adhere to a heat-sealing cutter.
In one possible design, further, the wax powder is a high melting point polytetrafluoroethylene wax powder.
In a possible design, further, 10-20% of modified styrene-acrylic resin liquid, 35-50% of heat-resistant acrylic emulsion, 20-40% of high-concentration color paste, 1-3% of filler, 1-3% of slipping agent and 1-3% of wax powder. The heat-resistant water-sealing ink also comprises the following raw material components in percentage by weight: 1% -5% of film forming auxiliary agent; 1 to 3 percent of coupling agent.
In the design, the heat-resistant water-sealing ink further comprises a film forming aid and a coupling agent, wherein the film forming aid can help the whole system of the heat-resistant water-sealing ink to better penetrate and wet the uneven contact surface of a substrate (Tyvek material), and when the heat-resistant water-sealing ink penetrates deeper into the substrate, the adhesive force of the heat-resistant water-sealing ink after the surface of the heat-resistant water-sealing ink is a film is better. The heat-resistant water-sealing ink also comprises a coupling agent, and the coupling agent can enable the heat-resistant water-sealing ink and the base material to be crosslinked to a certain extent, so that the adhesive force of the heat-resistant water-sealing ink on the base material is improved, and the heat-resistant water-sealing ink is not easy to fall off.
In one possible design, further, the coalescent includes an ether-based high boiling solvent including any one or combination of: diethylene glycol butyl ether, dipropylene glycol methyl ether, diethylene glycol ethyl ether.
In one possible design, further, the coupling agent comprises a silane coupling agent.
In a possible design, further, 10-20% of modified styrene-acrylic resin liquid, 35-50% of heat-resistant acrylic emulsion, 20-40% of high-concentration color paste, 1-3% of filler, 1-3% of slipping agent, 1-3% of wax powder, 1-5% of film-forming assistant and 1-3% of coupling agent. The heat-resistant water-sealing ink also comprises the following raw material components in percentage by weight: 0.5 to 2 percent of wetting agent; 0.1 to 0.5 percent of defoaming agent; 0.1 to 0.5 percent of pH regulator.
In the design, the heat-resistant water-sealing ink also comprises a wetting agent, and the wetting agent can promote the heat-resistant water-sealing ink to form a flat, smooth and uniform coating film in the drying film-forming process, and can improve the leveling property and uniformity of the coating film, namely the wetting and spreading of the heat-resistant water-sealing ink on a substrate, especially the irregular substrate surface, can be effectively improved to a certain extent. The heat-resistant water-sealing ink further comprises a defoaming agent for preventing the generation of bubbles in the water-based ink during production and printing and for eliminating the generated bubbles. The pH regulator can ensure that the pH value of the heat-seal resistant water-based ink is kept in a reasonable range in the using process, and the stability of the heat-seal resistant water-based ink is protected. The combination and percentage range of the heat-resistant water-sealing ink protected by the invention can ensure that an ink layer formed by the heat-resistant water-sealing ink on a Tyvek material has good adhesive force and heat resistance, and the heat-resistant water-sealing ink is not easy to separate from the Tyvek material and fall off in the heat seal treatment process.
In one possible design, further, the wetting agent is a silicone-based wetting agent.
In one possible design, further, the crosslinking agent is a zinc oxide solution having a solids content of 15% or more and 18% or less.
In one possible design, further, the high strength mill base comprises a high strength acrylic mill base.
In the design, the high-concentration acrylic color paste is water-based acrylic resin liquid grinding, and the pigment content is higher.
In one possible design, further, the heat resistant acrylic emulsion is a soft film forming emulsion. The glass transition temperature of the heat-resistant acrylic emulsion is Tg1, and meets the requirement that the Tg is more than or equal to minus 36 ℃ and less than or equal to 0 ℃ and is more than or equal to Tg 1. The solid content of the heat-resistant acrylic emulsion is more than or equal to 40 percent and less than or equal to 44 percent. The heat-sealing temperature of the heat-resistant acrylic emulsion is more than or equal to 150 ℃.
In the design, the appearance of the heat-resistant acrylic emulsion is milky white or semitransparent liquid, has excellent adhesive force and heat-resistant sealing performance, can solve the problem of adhesive force of the ink on a substrate (Tewei strong material) difficult to adhere, and is not adhered under heating and pressure at a certain temperature.
In one possible design, further, the acid value of the modified styrene-acrylic resin solution is 85. + -. 5 (KOH)/(mg/g). The solid content of the modified styrene-acrylic resin solution is more than or equal to 30 percent and less than or equal to 32 percent. The glass transition temperature of the modified styrene-acrylic resin liquid is Tg2, and meets the requirement that the Tg is more than or equal to 65 ℃ and less than or equal to 2 and less than or equal to 75 ℃. The heat sealing temperature of the modified styrene-acrylic resin liquid is more than or equal to 150 ℃.
In the design, compared with the conventional resin liquid, the modified styrene-acrylic resin liquid has excellent heat-resistant sealing performance and better solubility, can improve the performances of pigment wetting, transfer and the like, and is not easy to adhere at a high temperature and under a certain pressure.
According to a second aspect of the present invention, there is provided a method for preparing a heat-resistant water-blocking ink, comprising:
adding deionized water, ammonia water, a cross-linking agent and a defoaming agent into a reaction kettle, and uniformly stirring to obtain a first pretreatment solution;
adding the solid modified styrene-acrylic resin into the first pretreatment solution, and carrying out first stirring treatment in a sealed state to obtain a modified styrene-acrylic resin solution;
adding the modified styrene-acrylic resin solution and the heat-resistant acrylic emulsion into the reaction kettle according to the proportion, and carrying out second stirring treatment to obtain a second solution;
and adding the second solution and the high-concentration color paste in a corresponding proportion into a reaction kettle, and carrying out third stirring treatment to obtain the heat-resistant water-sealing ink.
The preparation method of the heat-resistant water-sealing ink comprises the steps of uniformly stirring deionized water, ammonia water, a cross-linking agent and a defoaming agent in a reaction kettle according to a proportion to form a first pretreatment solution, and then adding modified styrene-acrylic resin into the first pretreatment solution to enable the modified styrene-acrylic resin to be better dissolved in the first pretreatment solution to obtain modified styrene-acrylic resin liquid for later use. And then adding the modified styrene-acrylic resin liquid and the heat-resistant acrylic emulsion into the reaction kettle according to the proportion, carrying out second stirring treatment to obtain a second solution, and then adding the high-concentration color paste according to the corresponding proportion, carrying out third stirring treatment to obtain the heat-resistant water-sealing ink. The heat-resistant water-sealing ink provided by the invention is applied to a super-strong material, and comprises modified styrene-acrylic resin liquid, heat-resistant acrylic emulsion and high-concentration color paste, wherein the modified styrene-acrylic resin liquid and the heat-resistant acrylic emulsion are used in combination to effectively improve the heat resistance of the heat-resistant water-sealing ink, and when a super-strong product with the heat-resistant water-sealing ink is in a heat sealing process, the heat-resistant water-sealing ink can resist the pressure and temperature in the heat sealing process, is not easy to fall off from the super-strong material, is easy to be fully adhered with the ink, and avoids the problem that a heat-sealing cutter cannot seal due to the adhesion of the ink, and the cutter has to be stopped to be cleaned, so that the production efficiency is influenced.
The heat-resistant water-sealing ink comprises the following raw material components in percentage by weight: 10-20% of modified styrene-acrylic resin liquid, wherein the modified styrene-acrylic resin liquid comprises the following raw material components in percentage by weight: 30-40% of deionized water, 8-10% of ammonia water, 20-30% of cross-linking agent, 0.02-0.05% of defoaming agent and 30-35% of modified styrene-acrylic resin; 40-60% of heat-resistant acrylic emulsion; 20 to 40 percent of high-concentration color paste.
In a possible design, further, the step of adding the modified styrene-acrylic resin solution and the heat-resistant acrylic emulsion in the reaction kettle in proportion to perform the second stirring treatment to obtain the second solution specifically comprises:
adding the modified styrene-acrylic resin solution and the heat-resistant acrylic emulsion into a reaction kettle according to a certain proportion, and stirring at a low speed to obtain a first mixed solution;
sequentially adding a film-forming aid, a coupling agent, a wetting agent, wax powder, a filler, a slipping agent and a defoaming agent in a corresponding proportion into the mixed solution, and carrying out high-speed stirring treatment to obtain a second mixed solution;
the second mixed solution is subjected to a filtration treatment to obtain a second solution.
In the design, the step of adding the modified styrene-acrylic resin solution and the heat-resistant acrylic emulsion into the reaction kettle in proportion to perform second stirring treatment to obtain a second solution specifically comprises the following steps: firstly, adding modified styrene-acrylic resin liquid and heat-resistant acrylic emulsion into a reaction kettle in proportion, and carrying out low-speed stirring treatment to obtain a first mixed solution. Then, the film forming aid, the coupling agent, the wetting agent, the wax powder, the filler, the slipping agent and the defoaming agent are sequentially added into the mixed solution in a corresponding proportion and are stirred at a high speed to obtain a second mixed solution. Finally, the second mixed solution is subjected to a filtration treatment to obtain a second solution. After the filler is added, the viscosity of the whole system is hardly influenced, but the heat-resistant adhesion of the system can be improved, so that the heat resistance of the heat-resistant water-sealing ink is directly improved. The surface of the slipping agent is smooth, so that the surface of the heat-resistant water-sealing ink is smooth, the heat-resistant water-sealing ink is not easy to adhere to a heat-sealing cutter, and the anti-adhesion performance of the heat-resistant water-sealing ink is improved. The addition of the wax powder can improve the anti-adhesion performance of the whole system of the heat-resistant water-sealing ink, and meanwhile, the wax powder has a high melting point, so that the heat resistance performance of the heat-resistant water-sealing ink can be improved, for example, the heat-resistant time and the heat-resistant temperature of the heat-resistant water-sealing ink are prolonged, and the heat-resistant water-sealing ink is not easy to adhere to a heat-sealing cutter. The film forming assistant can help the whole system of the heat-seal resistant water-based ink to better penetrate and wet to the deep layer of a substrate (Tewei strong material), and when the heat-seal resistant water-based ink penetrates deeper on the substrate, the adhesive force of the heat-seal resistant water-based ink after the surface of the heat-seal resistant water-based ink is a film is better. The heat-resistant water-sealing ink also comprises a coupling agent, and the coupling agent can enable the heat-resistant water-sealing ink and the base material to be crosslinked to a certain extent, so that the adhesive force of the heat-resistant water-sealing ink on the base material is improved, and the heat-resistant water-sealing ink is not easy to fall off. The wetting agent can promote the heat-resistant water-sealing ink to form a flat, smooth and uniform coating film in the drying film-forming process, and can improve the leveling property and uniformity of the coating film, namely the wetting spreading of the heat-resistant water-sealing ink on a substrate, especially an irregular substrate surface, can be effectively improved to a certain extent. The heat-resistant water-sealing ink further comprises a defoaming agent for preventing the generation of bubbles in the water-based ink during production and printing and for eliminating the generated bubbles.
In a possible design, further, the step of adding the second solution and the high-concentration color paste in a corresponding proportion into the reaction kettle and carrying out third stirring treatment to obtain the heat-resistant water-sealing ink specifically comprises:
adding the second solution and the high-concentration color paste in a corresponding proportion into a reaction kettle;
and adding a pH regulator in a corresponding proportion into the reaction kettle and stirring at a speed of 600r/min for 10min to obtain the heat-resistant water-sealing ink.
In the design, the steps of adding the second solution and the high-concentration color paste in a corresponding proportion into the reaction kettle and carrying out third stirring treatment to obtain the heat-resistant water-sealing ink specifically comprise: firstly, adding the second solution and the high-concentration color paste with the corresponding proportion into a reaction kettle. Then, a pH regulator in a corresponding proportion was added to the reaction kettle and stirred at a speed of 600r/min for 10min to obtain a heat-resistant water-sealing ink. The pH regulator can ensure that the pH value of the heat-seal resistant water-based ink is kept in a reasonable range in the using process, and the stability of the heat-seal resistant water-based ink is protected. The combination and percentage range of the heat-resistant water-sealing ink protected by the invention can ensure that an ink layer formed by the heat-resistant water-sealing ink on a Tyvek material has good adhesive force and heat resistance, and the heat-resistant water-sealing ink is not easy to separate from the Tyvek material and fall off in the heat seal treatment process.
In a possible design, further, in the first stirring treatment, the stirring time is greater than or equal to 3 hours and less than or equal to 4 hours, and the stirring temperature is greater than or equal to 50 ℃ and less than or equal to 60 ℃.
In one possible design, further, during the low-speed stirring treatment, the reaction vessel is stirred at a stirring speed of 600r/min for 10 min.
In one possible design, further, the reaction vessel is stirred at a stirring speed of 1000r/min for 20min during the high-speed stirring treatment.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 shows a flow chart of a method for preparing a heat seal resistant aqueous ink according to an embodiment of the present invention;
FIG. 2 shows a flow chart of a method for preparing a heat seal resistant aqueous ink according to another embodiment of the present invention;
FIG. 3 shows a flow chart of a method for preparing a heat seal resistant aqueous ink according to yet another embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Heat-seal resistant water-based inks and methods of making the same provided according to some embodiments of the present invention are described below with reference to fig. 1-3.
Example one
According to a first aspect of the invention, a heat-resistant water-sealing ink is provided, which comprises the following raw material components in percentage by weight: 10-20% of modified styrene-acrylic resin liquid, wherein the modified styrene-acrylic resin liquid comprises the following raw material components in percentage by weight: 30-40% of deionized water, 8-10% of ammonia water, 20-30% of cross-linking agent, 0.02-0.05% of defoaming agent and 30-35% of modified styrene-acrylic resin; 40-60% of heat-resistant acrylic emulsion; 20 to 40 percent of high-concentration color paste.
The heat-resistant water-sealing ink provided by the invention is applied to a Tewei strong material, and comprises modified styrene-acrylic resin liquid, heat-resistant acrylic emulsion and high-concentration color paste, wherein the modified styrene-acrylic resin liquid and the heat-resistant acrylic emulsion are used in combination to effectively improve the heat resistance of the heat-resistant water-sealing ink.
Compared with the conventional resin liquid, the modified styrene-acrylic resin liquid has excellent heat sealing resistance and better solubility, can improve the properties of wetting, transfer and the like, and is not easy to adhere under the use conditions of high temperature and certain pressure.
Specifically, the crosslinking agent can increase the heat-resistant sealing temperature of the modified styrene-acrylic resin solution, and further increase the heat-resistant sealing temperature of the whole system (heat-resistant water-sealing ink), so that the dried heat-resistant water-sealing ink can withstand higher temperature.
Example two
On the basis of the foregoing embodiment, this embodiment further illustrates the components of the heat-resistant water-sealing ink, and further, the modified styrene-acrylic resin solution is 10% to 20%, the heat-resistant acrylic emulsion is 40% to 50%, and the high-concentration color paste is 20% to 40%; the heat-resistant water-sealing ink also comprises the following raw material components in percentage by weight: 1 to 3 percent of filler; 1 to 3 percent of slipping agent; 1 to 3 percent of wax powder.
In this embodiment, the heat-resistant water-seal ink further includes a filler, a slipping agent, and a wax powder, wherein the filler does not affect the viscosity of the entire system, but can improve the heat-resistant blocking property of the system, thereby directly improving the heat resistance of the heat-resistant water-seal ink. The slipping agent has the slipping and releasing characteristics, so that the surface of the heat-resistant water-sealing ink is smooth, the heat-resistant water-sealing ink is not easy to adhere to a heat-sealing cutter, and the anti-adhesion performance of the heat-resistant water-sealing ink is improved. The addition of the wax powder can improve the anti-adhesion performance of the whole system of the heat-resistant water-sealing ink, and meanwhile, the wax powder has a high melting point, so that the heat resistance performance of the heat-resistant water-sealing ink can be improved, for example, the heat-resistant time and the heat-resistant temperature of the heat-resistant water-sealing ink are prolonged, and the heat-resistant water-sealing ink is not easy to adhere to a heat-sealing cutter.
Specifically, the filler comprises silicon alkoxide microsphere powder, the particle size of the silicon alkoxide microsphere powder is more than or equal to 2 micrometers and less than or equal to 5 micrometers, the oil absorption value of the silicon alkoxide microsphere powder is more than or equal to 0.5 and less than or equal to 0.9, and the heat stability temperature of the silicon alkoxide microsphere powder is more than or equal to 900 ℃.
In the embodiment, the filler comprises silicon alkoxide microsphere powder, the siloxane micropowder is a high molecular polymer, the particle size of the silicon alkoxide microsphere powder is more than or equal to 2 micrometers and less than or equal to 5 micrometers, the oil absorption value of the silicon alkoxide microsphere powder is extremely low, the oil absorption value is more than or equal to 0.5 and less than or equal to 0.9, and after the silicon alkoxide microsphere powder is added into a system, the year of the system is hardly influenced, and the heat-resistant adhesion of the system can be improved. Meanwhile, the thermal stability temperature of the silicon alkoxide microsphere powder is more than or equal to 900 ℃, which is beneficial to improving the heat resistance of the whole system.
Further, the slipping agent is polydimethylsiloxane.
In the embodiment, the slipping agent is polydimethylsiloxane, is a macromolecular auxiliary agent, such as Dow Corning DC51, and can improve the slipping property of the surface of the heat-resistant water-sealing ink after film formation, reduce the friction coefficient and ensure that the ink is not easy to adhere to a heat-sealing cutter.
Further, the wax powder is polytetrafluoroethylene wax powder with high melting point.
EXAMPLE III
On the basis of the foregoing embodiments, this embodiment further illustrates the components of the heat-resistant water-sealing ink, and further includes 10% to 20% of modified styrene-acrylic resin solution, 35% to 50% of heat-resistant acrylic emulsion, 20% to 40% of high-concentration color paste, 1% to 3% of filler, 1% to 3% of slipping agent, and 1% to 3% of wax powder. The heat-resistant water-sealing ink also comprises the following raw material components in percentage by weight: 1% -5% of film forming auxiliary agent; 1 to 3 percent of coupling agent.
In this embodiment, the heat-resistant water-sealing ink further comprises a film-forming assistant and a coupling agent, wherein the film-forming assistant can help the whole system of the heat-resistant water-sealing ink to better penetrate and wet the uneven contact surface of the substrate (Tyvek material), and when the heat-resistant water-sealing ink penetrates deeper into the substrate, the adhesion force after the surface of the heat-resistant water-sealing ink is a film is better. The heat-resistant water-sealing ink also comprises a coupling agent, and the coupling agent can enable the heat-resistant water-sealing ink and the base material to be crosslinked to a certain extent, so that the adhesive force of the heat-resistant water-sealing ink on the base material is improved, and the heat-resistant water-sealing ink is not easy to fall off.
Further, the coalescing agent comprises an ether high boiling point solvent, and the ether high boiling point solvent comprises any one or a combination of the following: diethylene glycol butyl ether, dipropylene glycol methyl ether, diethylene glycol ethyl ether.
Further, the coupling agent includes a silane coupling agent.
Example four
On the basis of the foregoing examples, this example further illustrates the components of the heat-resistant water-sealing ink.
Further, 10-20% of modified styrene-acrylic resin liquid, 35-50% of heat-resistant acrylic emulsion, 20-40% of high-concentration color paste, 1-3% of filler, 1-3% of slipping agent, 1-3% of wax powder, 1-5% of film-forming assistant and 1-3% of coupling agent. The heat-resistant water-sealing ink also comprises the following raw material components in percentage by weight: 0.5 to 2 percent of wetting agent; 0.1 to 0.5 percent of defoaming agent; 0.1 to 0.5 percent of pH regulator.
In this embodiment, the heat-resistant water-sealing ink further includes a wetting agent, and the wetting agent can promote the heat-resistant water-sealing ink to form a flat, smooth and uniform coating film in the drying film-forming process, and can improve the leveling property and uniformity of the coating film, that is, to a certain extent, the wetting and spreading of the heat-resistant water-sealing ink on a substrate, especially an irregular substrate surface, can be effectively improved. The heat-resistant water-sealing ink further comprises a defoaming agent for preventing the generation of bubbles in the water-based ink during production and printing and for eliminating the generated bubbles. The pH regulator can ensure that the pH value of the heat-seal resistant water-based ink is kept in a reasonable range in the using process, and the stability of the heat-seal resistant water-based ink is protected. The combination and percentage range of the heat-resistant water-sealing ink protected by the invention can ensure that an ink layer formed by the heat-resistant water-sealing ink on a Tyvek material has good adhesive force and heat resistance, and the heat-resistant water-sealing ink is not easy to separate from the Tyvek material and fall off in the heat seal treatment process.
Specifically, the wetting agent is a silicone-based wetting agent.
Specifically, the cross-linking agent is a zinc oxide solution, and the solid content of the zinc oxide solution is greater than or equal to 15% and less than or equal to 18%.
Specifically, the high-concentration color paste comprises a high-concentration acrylic acid color paste.
In the embodiment, the high-concentration acrylic color paste is water-based acrylic resin liquid grinding and has higher pigment content.
Further, the heat-resistant acrylic emulsion is a soft film-forming emulsion. The glass transition temperature of the heat-resistant acrylic emulsion is Tg1, and meets the requirement that the Tg is more than or equal to minus 36 ℃ and less than or equal to 0 ℃ and is more than or equal to Tg 1. The solid content of the heat-resistant acrylic emulsion is more than or equal to 40 percent and less than or equal to 44 percent. The heat-sealing temperature of the heat-resistant acrylic emulsion is more than or equal to 150 ℃.
In the embodiment, the appearance of the heat-resistant acrylic emulsion is milk white or semitransparent liquid, has excellent adhesive force and heat-resistant sealing performance, can solve the problem of adhesive force of the heat-resistant water-sealing ink on a substrate (Tewei strong material) which is difficult to adhere, and cannot be adhered under heat and pressure at a certain temperature.
Further, the acid value of the modified styrene-acrylic resin solution was 85. + -. 5 (KOH)/(mg/g). The solid content of the modified styrene-acrylic resin solution is more than or equal to 30 percent and less than or equal to 32 percent. The glass transition temperature of the modified styrene-acrylic resin liquid is Tg2, and meets the requirement that the Tg is more than or equal to 65 ℃ and less than or equal to 2 and less than or equal to 75 ℃. The heat sealing temperature of the modified styrene-acrylic resin liquid is more than or equal to 150 ℃.
In the embodiment, compared with the conventional resin liquid, the modified styrene-acrylic resin liquid has excellent heat sealing resistance and better solubility, can improve the performances of pigment wetting, transfer and the like, and is not easy to adhere at a high temperature and under a certain pressure.
EXAMPLE five
In this example, the specific component ratios of the aqueous four-color blue heat-resistant water-sealing ink are specifically described as follows:
the component proportions of the modified styrene-acrylic resin liquid include:
39.98 percent of deionized water,
10 percent of ammonia water,
20 percent of cross-linking agent,
0.02 percent of defoaming agent,
30% of modified styrene-acrylic resin.
The specific component proportion of the aqueous four-color blue heat-resistant water-sealing ink comprises:
42.7 percent of heat-resistant acrylic emulsion (Indolur SE 196),
15% of modified styrene-acrylic resin solution (Hanhua S-60L solution),
2 percent of film-forming additive (propylene glycol),
1 percent of coupling agent (OFS-6030),
1 percent of wetting agent (Mitu C-77),
3 percent of wax powder (Lanco 1799),
3 percent of filler (ETERPEARL DF20A0 Yangxing chemical),
2 percent of slipping agent (DC51 Daokangning),
0.2 percent of defoaming agent (DC65 Dow Corning),
30 percent of water-based blue color paste,
0.1 percent of pH regulator (AMP-95),
wherein the sum of the mass percentages of the raw materials is 100 percent.
EXAMPLE six
In this example, the specific component ratios of the aqueous bluish heat-resistant water-sealing ink are specifically described as follows:
the modified styrene-acrylic resin solution was the same as in example five.
The specific component proportions of the aqueous light blue heat-resistant water-sealing ink comprise: 40% of heat-resistant acrylic emulsion (Indolur SE 196);
17.7% of modified styrene-acrylic resin solution (Hanhua S-60L solution),
2 percent of film-forming additive (propylene glycol),
1 percent of coupling agent (OFS-6030),
1 percent of wetting agent (Mitu C-77),
3 percent of wax powder (Lanco 1799),
3 percent of filler (ETERPEARL DF20A0 Yangxing chemical),
2 percent of slipping agent (DC51 Daokangning),
0.2 percent of defoaming agent (DC65 Dow Corning),
10 percent of water-based blue paste,
20 percent of aqueous white slurry,
0.1 percent of pH regulator (AMP-95),
wherein the sum of the mass percentages of the raw materials is 100 percent.
EXAMPLE seven
In this example, the specific component ratios of the aqueous rose heat-resistant water-sealing ink are specifically described as follows:
the modified styrene-acrylic resin solution was the same as in example five.
The specific component proportions of the aqueous rose heat-resistant water-sealing ink comprise:
37.7 percent of heat-resistant acrylic emulsion (Indolur SE 196),
15% of modified styrene-acrylic resin solution (Hanhua S-60L solution),
2 percent of film-forming additive (propylene glycol),
1 percent of coupling agent (OFS-6030),
1 percent of wetting agent (Mitu C-77),
3 percent of wax powder (Lanco 1799),
3 percent of filler (ETERPEARL DF20A0 Yangxing chemical),
2 percent of slipping agent (DC51 Daokangning),
0.2 percent of defoaming agent (DC65 Dow Corning),
35 percent of rose pulp with high concentration,
0.1 percent of pH regulator (AMP-95),
wherein the sum of the mass percentages of the raw materials is 100 percent.
Example eight
In this example, the specific component ratios of the aqueous black heat-resistant water-sealing ink are specifically described as follows:
the modified styrene-acrylic resin solution was the same as in example five.
The specific component proportions of the water-based black heat-resistant water-sealing ink comprise:
35% of heat-resistant acrylic emulsion (Indolur SE 196),
17.7% of modified styrene-acrylic resin solution (Hanhua S-60L solution),
2 percent of film-forming additive (propylene glycol),
1 percent of coupling agent (OFS-6030),
1 percent of wetting agent (Mitu C-77),
3 percent of wax powder (Lanco 1799),
3 percent of filler (ETERPEARL DF20A0 Yangxing chemical),
2 percent of slipping agent (DC51 Daokangning),
0.2 percent of defoaming agent (DC65 Dow Corning),
35 percent of water-based black paste,
0.1 percent of pH regulator (AMP-95),
wherein the sum of the mass percentages of the raw materials is 100 percent.
Example nine
In this example, the specific component ratios of the aqueous green heat-resistant water-sealing ink are specifically described as follows:
the modified styrene-acrylic resin solution was the same as in example five.
The specific component proportions of the water-based green heat-resistant water-sealing ink comprise:
39% of heat-resistant acrylic emulsion (Indolur SE 196),
15.7% of modified styrene-acrylic resin solution (Hanhua S-60L solution),
2 percent of film-forming additive (propylene glycol),
1 percent of coupling agent (OFS-6030),
1 percent of wetting agent (Mitu C-77),
2 percent of wax powder (Lanco 1799),
2 percent of filler (ETERPEARL DF20A0 Yangxing chemical),
2 percent of slipping agent (DC51 Daokangning),
0.2 percent of defoaming agent (DC65 Dow Corning),
35 percent of water-based green paste,
0.1 percent of pH regulator (AMP-95),
wherein the sum of the mass percentages of the raw materials is 100 percent.
In examples five to nine, the component ratios of the 5 different colors of the aqueous heat-resistant water-sealing inks were blue, light blue, rose red, black and green, respectively. Except for different kinds of the corresponding high-concentration color pastes, the contents of the heat-resistant acrylic emulsion and the modification are correspondingly adjusted finely by the content of the west-acrylic resin liquid.
In order to prove that excellent heat resistance, adhesion and the like can be achieved by using the component ratios disclosed in example five, another 5 control examples were selected, specifically including:
the first comparative example is as follows:
conventional acrylic emulsion (basf JONCRYL 624) 42%,
18.7 percent of conventional styrene-acrylic resin solution (basf 678 solution),
2 percent of film-forming additive (propylene glycol),
1 percent of coupling agent (OFS-6030),
1 percent of wetting agent (Mitu C-77),
2 percent of wax powder (Lanco 1799),
2 percent of filler (ETERPEARL DF20A0 Yangxing chemical),
2 percent of slipping agent (DC51 Daokangning),
0.2 percent of defoaming agent (DC65 Dow Corning),
30 percent of water-based blue color paste,
0.1 percent of pH regulator (AMP-95),
the difference between the first comparative example and the fifth example is that the first comparative example adopts a conventional acrylic emulsion and a conventional styrene-acrylic resin liquid, and the fifth example adopts a heat-resistant acrylic emulsion and a modified styrene-acrylic resin liquid.
Comparative example two:
46 percent of conventional acrylic emulsion (Basff JONCRYL 624),
18.7 percent of conventional styrene-acrylic resin solution (basf 678 solution),
2 percent of film-forming additive (propylene glycol),
1 percent of wetting agent (Mitu C-77),
2 percent of wax powder (Lanco 1799),
0.2 percent of defoaming agent (DC65 Dow Corning),
30 percent of water-based blue color paste,
0.1 percent of pH regulator (AMP-95),
the difference between the second comparative example and the fifth example is that the second comparative example adopts a conventional acrylic emulsion and a conventional styrene-acrylic resin liquid, while the fifth example adopts a heat-resistant acrylic emulsion and a modified styrene-acrylic resin liquid, and meanwhile, the second comparative example does not add a coupling agent, a filler and a slipping agent.
Comparative example three:
43 percent of conventional acrylic emulsion (Basff JONCRYL 624),
18.7 percent of conventional styrene-acrylic resin solution (basf 678 solution),
2 percent of film-forming additive (propylene glycol),
1 percent of coupling agent (OFS-6030),
1 percent of wetting agent (Mitu C-77),
2 percent of wax powder (Lanco 1799),
2 percent of slipping agent (DC51 Daokangning),
0.2 percent of defoaming agent (DC65 Dow Corning),
30 percent of water-based blue color paste,
0.1 percent of pH regulator (AMP-95),
the difference between the third comparative example and the fifth example is that the third comparative example adopts a conventional acrylic emulsion and a conventional styrene-acrylic resin liquid, while the fifth example adopts a heat-resistant acrylic emulsion and a modified styrene-acrylic resin liquid, and the third comparative example lacks a filler.
Comparative example four:
47% of heat-resistant acrylic emulsion (Indolur SE 196),
18.7% of modified styrene-acrylic resin solution (Hanhua S-60L solution),
1 percent of wetting agent (Mitu C-77),
3 percent of wax powder (Lanco 1799),
0.2 percent of defoaming agent (DC65 Dow Corning),
30 percent of high-concentration blue color paste,
0.1 percent of pH regulator (AMP-95),
the sum of the mass percentages of the raw materials is 100%, and the difference between the fourth comparative example and the fifth comparative example is that the fourth comparative example is lack of a film assistant, a coupling agent, a filler and a slipping agent.
Comparative example five:
44% of heat-resistant acrylic emulsion (Indolur SE 196),
18.7% of modified styrene-acrylic resin solution (Hanhua S-60L solution),
1 percent of wetting agent (Mitu C-77),
3 percent of filler (ETERPEARL DF20A0 Yangxing chemical),
3 percent of wax powder (Lanco 1799),
0.2 percent of defoaming agent (DC65 Dow Corning),
30 percent of high-concentration blue color paste,
0.1 percent of pH regulator (AMP-95),
the sum of the mass percentages of the raw materials is 100%, and the difference between the fifth comparative example and the fifth example is that the fourth comparative example is lack of a membrane auxiliary agent, a coupling agent and a slipping agent.
In comparative analysis experiments, the heat-resistant water-sealing inks obtained in the foregoing examples five to nine were used, and the inks obtained in comparative examples one to five were compared. Respectively spreading samples on a Tyvek material and an aluminum foil material by using a 500LPI automatic color spreading instrument or an RK (potassium nitrate) proofing machine, placing the samples in a 50 ℃ oven for baking for 5 minutes, and respectively testing the adhesive force, the heat resistance and the heat resistance adhesion after the samples are fully dried. The specific test results are shown in table 1 below.
TABLE 1
As can be seen from Table 1, the heat seal resistance was, in order from high to low, example six > example five, example seven, example eight, example nine, comparative example five > comparative example four > comparative example one > comparative example three ≧ comparative example two.
After the heat-resistant water-sealing ink prepared in the application is printed and used on a client, long-time continuous processing in the post process can be realized, heat sealing can be carried out for 6 hours without stopping, and the ink is not adhered to a knife edge; however, in the conventional printing ink on the market, the continuous heat sealing is carried out for 2000 times, about 1 hour, the heat sealing knife edge is full of printing ink, the printing ink cannot work, and the machine needs to be stopped to clean the sealing cutter.
From the above test results, it is known that the heat resistance of the heat-resistant water-sealing ink in the present application is affected most by the two main resins, i.e., the heat-resistant acrylic emulsion and the modified styrene-acrylic resin solution, and then the slipping agent, the filler and the wax powder are affected less.
It should be noted that the test conditions of the heat seal resistance are specifically as follows: using a blank a4 paper pad on the surface of the ink printed on the tyvek material, the instrument: the heat sealing instrument for the Jinan blue HST-H3 has the advantages that the temperature of the upper part of the heat sealing instrument is adjusted to 121 ℃, the pressure is 3KG, the time is 2 seconds, the heat sealing is carried out 3 times at different positions, the color depth and the amount of ink marks on A4 paper are observed, the lighter the color is or the less the ink residual marks are, and the better the heat sealing effect of the ink is.
Specifically, the test conditions of the thermal adhesion resistance are as follows: folding the aluminum foil printed with the ink surface in half, folding the ink surface to surface in half, adjusting the position of wool by using an electric iron, measuring the surface temperature of the electric iron by using a temperature measuring gun at 120-150 ℃, placing the electric iron on the folded sample sheet, placing a weight with the weight of 5KG on the electric iron for 2 minutes, opening the heated aluminum foil, observing the adhesion condition, judging the classification of the adhesion degree of the sections, and not adhering the 5 grades; 10% of the positions are bonded to level 4; 10-30% of the positions are adhered, and then the grade is 3; 30-50% of the positions are adhered, and then the grade is 2; fully sticky, level 1, with half the number between the two levels.
According to a second aspect of the present invention, as shown in fig. 1, there is provided a method for preparing a heat-resistant water-blocking ink, comprising:
step 102, adding deionized water, ammonia water, a cross-linking agent and a defoaming agent into a reaction kettle, and uniformly stirring to obtain a first pretreatment solution;
104, adding the solid modified styrene-acrylic resin into the first pretreatment solution, and carrying out first stirring treatment in a sealed state to obtain a modified styrene-acrylic resin solution;
106, adding the modified styrene-acrylic resin liquid and the heat-resistant acrylic emulsion into the reaction kettle in proportion, and carrying out second stirring treatment to obtain a second solution;
and 108, adding the second solution and the high-concentration color paste in a corresponding proportion into the reaction kettle, and carrying out third stirring treatment to obtain the heat-resistant water-sealing ink.
The preparation method of the heat-resistant water-sealing ink comprises the steps of uniformly stirring deionized water, ammonia water, a cross-linking agent and a defoaming agent in a reaction kettle according to a proportion to form a first pretreatment solution, and then adding modified styrene-acrylic resin into the first pretreatment solution to enable the modified styrene-acrylic resin to be better dissolved in the first pretreatment solution to obtain modified styrene-acrylic resin liquid for later use. And then adding the modified styrene-acrylic resin liquid and the heat-resistant acrylic emulsion into the reaction kettle according to the proportion, carrying out second stirring treatment to obtain a second solution, and then adding the high-concentration color paste according to the corresponding proportion, carrying out third stirring treatment to obtain the heat-resistant water-sealing ink. The heat-resistant water-sealing ink provided by the invention is applied to a Tewei strong material, and comprises modified styrene-acrylic resin liquid, heat-resistant acrylic emulsion and high-concentration color paste, wherein the modified styrene-acrylic resin liquid and the heat-resistant acrylic emulsion are used in combination to effectively improve the heat resistance of the heat-resistant water-sealing ink.
The heat-resistant water-sealing ink comprises the following raw material components in percentage by weight: 10-20% of modified styrene-acrylic resin liquid, wherein the modified styrene-acrylic resin liquid comprises the following raw material components in percentage by weight: 30-40% of deionized water, 8-10% of ammonia water, 20-30% of cross-linking agent, 0.02-0.05% of defoaming agent and 30-35% of modified styrene-acrylic resin; 40-60% of heat-resistant acrylic emulsion; 20 to 40 percent of high-concentration color paste.
Further, as shown in fig. 2, the step of adding the modified styrene-acrylic resin solution and the heat-resistant acrylic emulsion into the reaction kettle in proportion to perform a second stirring treatment to obtain a second solution specifically includes:
202, adding the modified styrene-acrylic resin liquid and the heat-resistant acrylic emulsion into a reaction kettle in proportion, and stirring at a low speed to obtain a first mixed solution;
in step 206, the second mixed solution is filtered to obtain a second solution.
In this embodiment, the step of adding the modified styrene-acrylic resin solution and the heat-resistant acrylic emulsion to the reaction kettle in proportion to perform the second stirring treatment to obtain the second solution specifically includes: firstly, adding modified styrene-acrylic resin liquid and heat-resistant acrylic emulsion into a reaction kettle in proportion, and carrying out low-speed stirring treatment to obtain a first mixed solution. Then, the film forming aid, the coupling agent, the wetting agent, the wax powder, the filler, the slipping agent and the defoaming agent are sequentially added into the mixed solution in a corresponding proportion and are stirred at a high speed to obtain a second mixed solution. Finally, the second mixed solution is subjected to a filtration treatment to obtain a second solution. After the filler is added, the viscosity of the whole system is hardly influenced, but the heat-resistant adhesion of the system can be improved, so that the heat resistance of the heat-resistant water-sealing ink is directly improved. The surface of the slipping agent is smooth, so that the surface of the heat-resistant water-sealing ink is smooth, the heat-resistant water-sealing ink is not easy to adhere to a heat-sealing cutter, and the anti-adhesion performance of the heat-resistant water-sealing ink is improved. The addition of the wax powder can improve the anti-adhesion performance of the whole system of the heat-resistant water-sealing ink, and meanwhile, the wax powder has a high melting point, so that the heat resistance performance of the heat-resistant water-sealing ink can be improved, for example, the heat-resistant time and the heat-resistant temperature of the heat-resistant water-sealing ink are prolonged, and the heat-resistant water-sealing ink is not easy to adhere to a heat-sealing cutter. The film forming assistant can help the whole system of the heat-seal resistant water-based ink to better penetrate and wet to the deep layer of a substrate (Tewei strong material), and when the heat-seal resistant water-based ink penetrates deeper on the substrate, the adhesive force of the heat-seal resistant water-based ink after the surface of the heat-seal resistant water-based ink is a film is better. The heat-resistant water-sealing ink also comprises a coupling agent, and the coupling agent can enable the heat-resistant water-sealing ink and the base material to be crosslinked to a certain extent, so that the adhesive force of the heat-resistant water-sealing ink on the base material is improved, and the heat-resistant water-sealing ink is not easy to fall off. The wetting agent can promote the heat-resistant water-sealing ink to form a flat, smooth and uniform coating film in the drying film-forming process, and can improve the leveling property and uniformity of the coating film, namely the wetting spreading of the heat-resistant water-sealing ink on a substrate, especially an irregular substrate surface, can be effectively improved to a certain extent. The heat-resistant water-sealing ink further comprises a defoaming agent for preventing the generation of bubbles in the water-based ink during production and printing and for eliminating the generated bubbles.
Further, as shown in fig. 3, the step of adding the second solution and the high-concentration color paste in a corresponding ratio into the reaction kettle and performing a third stirring treatment to obtain the heat-resistant water-sealing ink specifically includes:
and 304, adding a pH regulator in a corresponding proportion into the reaction kettle, and stirring at the speed of 600r/min for 10min to obtain the heat-resistant water-sealing ink.
In this embodiment, the step of adding the second solution and the high-concentration color paste in a corresponding ratio into the reaction kettle and performing a third stirring treatment to obtain the heat-resistant water-sealing ink specifically includes: firstly, adding the second solution and the high-concentration color paste with the corresponding proportion into a reaction kettle. Then, a pH regulator in a corresponding proportion was added to the reaction kettle and stirred at a speed of 600r/min for 10min to obtain a heat-resistant water-sealing ink. The pH regulator can ensure that the pH value of the heat-seal resistant water-based ink is kept in a reasonable range in the using process, and the stability of the heat-seal resistant water-based ink is protected. The combination and percentage range of the heat-resistant water-sealing ink protected by the invention can ensure that an ink layer formed by the heat-resistant water-sealing ink on a Tyvek material has good adhesive force and heat resistance, and the heat-resistant water-sealing ink is not easy to separate from the Tyvek material and fall off in the heat seal treatment process.
Further, in the first stirring treatment process, the stirring time is more than or equal to 3 hours and less than or equal to 4 hours, and the stirring temperature is more than or equal to 50 ℃ and less than or equal to 60 ℃.
Further, during the low-speed stirring treatment, the reaction kettle is stirred for 10min at a stirring speed of 600 r/min.
Further, in the high-speed stirring treatment, the reaction kettle was stirred at a stirring speed of 1000r/min for 20 min.
In one specific embodiment, the method for preparing the heat-resistant water-sealing ink comprises the following steps:
firstly, preparing modified styrene-acrylic resin liquid, adding water, ammonia water, a cross-linking agent and a defoaming agent into a reaction kettle, uniformly stirring, adding solid modified styrene-acrylic resin, stirring at a sealed medium speed for 3-4 hours, and controlling the temperature of the reaction kettle at 50-60 ℃ by using a heating belt so as to be quickly dissolved. Wherein, the formula of the modified styrene-acrylic resin liquid is as follows: 30-40% of deionized water, 8-10% of ammonia water, 20-30% of cross-linking agent, 0.02-0.05% of defoaming agent and 30-35% of modified styrene-acrylic resin.
And then, preparing the heat-resistant water-based varnish, namely adding the modified styrene-acrylic resin liquid into a reaction kettle, adding the heat-resistant acrylic emulsion, stirring at the speed of 600 revolutions per minute for 10 minutes, sequentially adding the film-forming aid, the coupling agent, the wetting agent, the wax powder, the filler, the slipping agent and the defoaming agent, stirring at a high speed (1000 revolutions per minute) for 20 minutes, filtering to obtain the varnish, and packaging for later use.
And finally, adding the ink adjusting oil into a reaction kettle, adding the high-concentration acrylic color paste and the pH regulator, stirring at the rotating speed of 600 rpm for 10 minutes, fully stirring uniformly, and adjusting the viscosity to 15 +/-3 seconds (Zahn3# cup, 25 ℃), thus obtaining the heat-seal-resistant water-based ink. The heat-seal-resistant water-based ink is prepared according to the following formula: 35-50% of heat-resistant acrylic emulsion, 10-20% of modified styrene-acrylic resin liquid, 1-5% of film-forming additive, 1-3% of coupling agent, 0.5-2% of wetting agent, 1-3% of wax powder, 1-3% of filler, 1-3% of slipping agent, 0.1-0.5% of defoaming agent, 20-40% of high-concentration color paste and 0.1-0.5% of pH regulator. The heat-resistant water-sealing ink is mainly applied to a Tewei strong material in a printing mode, has good adhesive force and good heat-resistant sealing performance, is not easy to be thermally adhered, is sealed in the post-process machining mode, is long in time and continuous in heat sealing, is not stained with ink, avoids frequent shutdown of operators to clean the heat-sealing cutter, and greatly improves the working efficiency.
In the present invention, the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The heat-resistant water-sealing ink is characterized by comprising the following raw material components in percentage by weight:
10-20% of modified styrene-acrylic resin liquid, wherein the modified styrene-acrylic resin liquid comprises the following raw material components in percentage by weight: 30-40% of deionized water, 8-10% of ammonia water, 20-30% of cross-linking agent, 0.02-0.05% of defoaming agent and 30-35% of modified styrene-acrylic resin;
40-60% of heat-resistant acrylic emulsion;
20 to 40 percent of high-concentration color paste.
2. The heat-resistant water-sealing ink according to claim 1,
10-20% of modified styrene-acrylic resin liquid, 40-50% of heat-resistant acrylic emulsion and 20-40% of high-concentration color paste;
the heat-resistant water-sealing ink also comprises the following raw material components in percentage by weight:
1 to 3 percent of filler;
1 to 3 percent of slipping agent;
1 to 3 percent of wax powder.
3. The heat-resistant water-sealing ink according to claim 2,
the filler comprises silicon alkoxide microsphere powder, the particle size of the silicon alkoxide microsphere powder is more than or equal to 2 microns and less than or equal to 5 microns, the oil absorption value of the silicon alkoxide microsphere powder is more than or equal to 0.5 and less than or equal to 0.9, and the heat stability temperature of the silicon alkoxide microsphere powder is more than or equal to 900 ℃; and/or
The slipping agent is polydimethylsiloxane; and/or
The wax powder is polytetrafluoroethylene wax powder with a high melting point.
4. The heat-resistant water-sealing ink according to claim 2,
10-20% of modified styrene-acrylic resin liquid, 35-50% of heat-resistant acrylic emulsion, 20-40% of high-concentration color paste, 1-3% of filler, 1-3% of slipping agent and 1-3% of wax powder; the heat-resistant water-sealing ink also comprises the following raw material components in percentage by weight:
1% -5% of film forming auxiliary agent;
1 to 3 percent of coupling agent.
5. The heat-resistant water-sealing ink according to claim 4,
the film forming auxiliary agent comprises an ether high-boiling point solvent, and the ether high-boiling point solvent comprises any one or combination of the following components: diethylene glycol butyl ether, dipropylene glycol methyl ether, diethylene glycol ethyl ether; and/or
The coupling agent includes a silane coupling agent.
6. The heat-resistant water-sealing ink according to claim 4,
10-20% of modified styrene-acrylic resin liquid, 35-50% of heat-resistant acrylic emulsion, 20-40% of high-concentration color paste, 1-3% of filler, 1-3% of slipping agent, 1-3% of wax powder, 1-5% of film-forming assistant and 1-3% of coupling agent;
the heat-resistant water-sealing ink also comprises the following raw material components in percentage by weight:
0.5 to 2 percent of wetting agent;
0.1 to 0.5 percent of defoaming agent;
0.1 to 0.5 percent of pH regulator.
7. A preparation method of heat-resistant water-sealing ink is characterized by comprising the following steps:
adding deionized water, ammonia water, a cross-linking agent and a defoaming agent into a reaction kettle, and uniformly stirring to obtain a first pretreatment solution;
adding solid modified styrene-acrylic resin into the first pretreatment solution, and carrying out first stirring treatment in a sealed state to obtain modified styrene-acrylic resin liquid;
adding the modified styrene-acrylic resin solution and the heat-resistant acrylic emulsion into a reaction kettle according to the proportion, and carrying out second stirring treatment to obtain a second solution;
and adding the second solution and the high-concentration color paste in a corresponding proportion into a reaction kettle, and carrying out third stirring treatment to obtain the heat-resistant water-sealing ink.
8. The method for preparing the heat-resistant water-sealing ink according to claim 7, wherein the step of adding the modified styrene-acrylic resin solution and the heat-resistant acrylic emulsion in the reaction kettle in proportion to perform the second stirring treatment to obtain the second solution specifically comprises:
adding the modified styrene-acrylic resin solution and the heat-resistant acrylic emulsion into a reaction kettle according to a certain proportion, and stirring at a low speed to obtain a first mixed solution;
sequentially adding a film-forming aid, a coupling agent, a wetting agent, wax powder, a filler, a slipping agent and a defoaming agent in a corresponding proportion into the mixed solution, and carrying out high-speed stirring treatment to obtain a second mixed solution;
filtering the second mixed solution to obtain the second solution.
9. The method for preparing the heat-resistant water-sealing ink according to claim 7, wherein the step of adding the second solution and the high-concentration color paste in a corresponding proportion into a reaction kettle and performing a third stirring treatment to obtain the heat-resistant water-sealing ink specifically comprises:
adding the second solution and the high-concentration color paste in a corresponding proportion into a reaction kettle;
and adding a pH regulator in a corresponding proportion into the reaction kettle, and stirring at a speed of 600r/min for 10min to obtain the heat-resistant water-sealing ink.
10. The method for preparing a heat-resistant water-sealing ink according to claim 9,
in the first stirring treatment process, the stirring time is more than or equal to 3 hours and less than or equal to 4 hours, the stirring temperature is more than or equal to 50 ℃ and less than or equal to 60 ℃; and/or
In the low-speed stirring treatment process, the reaction kettle is stirred for 10min at the stirring speed of 600 r/min; and/or
In the high-speed stirring treatment process, the reaction kettle is stirred for 20min at the stirring speed of 1000 r/min.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113899693A (en) * | 2021-09-27 | 2022-01-07 | 武汉淡雅香生物科技有限公司 | Method for detecting thermal bonding performance of water-based ink |
| CN115353590A (en) * | 2022-08-30 | 2022-11-18 | 上海高邦印刷材料有限公司 | Preparation method of heat-resistant emulsion for water-based ink |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113899693A (en) * | 2021-09-27 | 2022-01-07 | 武汉淡雅香生物科技有限公司 | Method for detecting thermal bonding performance of water-based ink |
| CN115353590A (en) * | 2022-08-30 | 2022-11-18 | 上海高邦印刷材料有限公司 | Preparation method of heat-resistant emulsion for water-based ink |
| CN115353590B (en) * | 2022-08-30 | 2024-04-26 | 上海高邦印刷材料有限公司 | Preparation method of heat-resistant emulsion for water-based ink |
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