High-weather-resistance environment-friendly gold ink material and preparation method thereof

Abstract

The invention relates to the technical field of gravure ink preparation industry, in particular to a high-weather-resistance environment-friendly gold ink material and a preparation method thereof.The adhesive force of ink to a base material is improved through silica sol, meanwhile, an ink layer is smoother and more uniform by means of calcium silicate whiskers and zeolite powder, the calcium silicate whiskers contain silicon hydroxyl which can form hydrogen bonds with hydroxyl in the silica sol, and therefore the high-weather-resistance environment-friendly gold ink material is obtained. The calcium silicate whiskers form a net structure in a system and can be effectively connected with the silica sol, so that large volume shrinkage of the silica sol during film forming is reduced, meanwhile, the zeolite powder is filled in the net structure and can play a role in framework supporting, the volume shrinkage of the silica sol during film forming is further reduced, the stability of an ink layer is effectively improved, and the service life of the ink layer is prolonged. The zeolite powder is treated by utilizing polyvinyl alcohol and a silane coupling agent, so that the zeolite powder can stably exist in a system, the adhesion firmness of an ink layer on the surface of a base material is further improved, and the migration possibility of the ink is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of gravure ink preparation industry, and in particular to a highly weather-resistant and environmentally friendly gold ink material and a preparation method thereof. Background Art

[0002] Printing industry is an important carrier of cultural and artistic communication and commercial information dissemination. Ink is an important material used for printing in the printing industry. It displays patterns and texts on the substrate through printing or spraying. It is the material used to form graphic information in the printing process, which directly determines the gradation, color, clarity, etc. of the image on the printed product. Today, with the increasing global environmental awareness and the concept of sustainable development deeply rooted in people's hearts, all walks of life are actively exploring and implementing more environmentally friendly solutions in order to reduce the burden on the natural environment. The use and emission of ink in the printing industry have always attracted much attention.

[0003] However, traditional inks generally contain volatile organic compounds (VOCs), which evaporate in large quantities during the printing and use of inks, seriously polluting the air environment and posing a potential threat to human health. Summary of the invention

[0004] The purpose of the present invention is to provide a highly weather-resistant and environmentally friendly gold ink material and a preparation method, aiming to solve the technical problem that the inks in the prior art generally contain volatile organic compounds (VOCs), which will evaporate in large quantities during the printing and use of the inks, seriously polluting the air environment and posing a potential threat to human health.

[0005] To achieve the above-mentioned purpose, the present invention adopts a highly weather-resistant and environmentally friendly gold ink material, including 20-30 parts of polyvinyl alcohol aqueous solution, 30-40 parts of silane coupling agent aqueous solution, 100-120 parts of water-based acrylic resin, 25-30 parts of pigment, 3-5 parts of amide defoaming agent, 3-5 parts of leveling agent, 1-3 parts of thickener, 15-20 parts of silica sol, 5-8 parts of calcium silicate whisker, and 8-10 parts of zeolite powder.

[0006] The present invention also provides a method for preparing a highly weather-resistant and environmentally friendly gold ink material, which is used to prepare the highly weather-resistant and environmentally friendly gold ink material as described above.

[0007] The steps include:

[0008] Step 1, preparing a polyvinyl alcohol aqueous solution for standby use;

[0009] Step 2: Mix the polyvinyl alcohol aqueous solution and the silane coupling agent aqueous solution in proportion to prepare a mixed solution for standby use;

[0010] Step 3, adding zeolite powder according to a proportion into the mixed solution for reaction, filtering and drying after the reaction is completed to obtain treated zeolite powder;

[0011] Step 4: Mix water-based acrylic resin, pigment, defoamer, leveling agent, thickener and silica sol in proportion, then add calcium silicate whiskers and treated zeolite powder in proportion and mix well to obtain a highly weather-resistant and environmentally friendly gold ink material.

[0012] Wherein, the specific method of preparing the polyvinyl alcohol aqueous solution for standby use is as follows:

[0013] Polyvinyl alcohol and water are mixed in a mass ratio of 10-12:100, stirred continuously for 25-30 minutes at room temperature, then heated to 90-95°C, kept warm for 2-3 hours, and cooled to obtain a polyvinyl alcohol aqueous solution.

[0014] When the polyvinyl alcohol aqueous solution and the silane coupling agent aqueous solution are mixed, stirring is added to improve the mixing effect.

[0015] When zeolite powder is added into the mixed solution for reaction, the reaction temperature is 60-80° C. and the reaction time is 1-2 h.

[0016] The invention discloses a highly weather-resistant and environmentally friendly gold ink material and a preparation method thereof. Silica sol is used to improve the adhesion of ink to a substrate. Meanwhile, calcium silicate whiskers and zeolite powder are used to make the ink layer smoother and more uniform. Calcium silicate whiskers contain silanol groups and can form hydrogen bonds with hydroxyl groups in silica sol. The calcium silicate whiskers form a network structure in the system and can effectively connect the silica sol, thereby reducing the large volume shrinkage of the silica sol during film formation. Meanwhile, zeolite powder is filled in the network structure to play a skeletal supporting role, thereby further reducing the volume shrinkage of the silica sol during film formation. The composite of silica sol, calcium silicate whiskers and zeolite powder effectively improves the adhesion firmness of the ink on the surface of the substrate, and the stability of the ink layer is effectively improved, thereby reducing the possibility of ink migration. The zeolite powder is treated with polyvinyl alcohol and a silane coupling agent so that the zeolite powder can be stably present in the system, thereby further improving the adhesion firmness of the ink layer on the surface of the substrate and reducing the possibility of ink migration.

[0017] In this way, the technical problem that volatile organic compounds (VOCs) are commonly contained in inks in the technology is solved. These compounds will evaporate in large quantities during the printing and use of the ink, seriously polluting the air environment and posing a potential threat to human health. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a step flow chart of Example 1 of the present invention.

[0020] Figure 2 It is a step flow chart of Example 2 of the present invention.

[0021] Figure 3 It is a step flow chart of Example 3 of the present invention. DETAILED DESCRIPTION

[0022] Embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0023] The invention provides a highly weather-resistant and environmentally friendly gold ink material, which comprises 20-30 parts of polyvinyl alcohol aqueous solution, 30-40 parts of silane coupling agent aqueous solution, 100-120 parts of water-based acrylic resin, 25-30 parts of pigment, 3-5 parts of amide defoamer, 3-5 parts of leveling agent, 1-3 parts of thickener, 15-20 parts of silica sol, 5-8 parts of calcium silicate whisker and 8-10 parts of zeolite powder.

[0024] The present invention also provides a method for preparing a highly weather-resistant and environmentally friendly gold ink material, which is used to prepare the highly weather-resistant and environmentally friendly gold ink material as described above.

[0025] The steps include:

[0026] Step 1, preparing a polyvinyl alcohol aqueous solution for standby use;

[0027] Step 2: Mix the polyvinyl alcohol aqueous solution and the silane coupling agent aqueous solution in proportion to prepare a mixed solution for standby use;

[0028] Step 3, adding zeolite powder according to a proportion into the mixed solution for reaction, filtering and drying after the reaction is completed to obtain treated zeolite powder;

[0029] Step 4: Mix water-based acrylic resin, pigment, defoamer, leveling agent, thickener and silica sol in proportion, then add calcium silicate whiskers and treated zeolite powder in proportion and mix well to obtain a highly weather-resistant and environmentally friendly gold ink material.

[0030] Wherein, the specific method of preparing the polyvinyl alcohol aqueous solution for standby use is as follows:

[0031] Mix polyvinyl alcohol and water in a mass ratio of 10-12:100, stir continuously for 25-30 minutes at room temperature, then heat to 90-95°C, keep warm for 2-3 hours, and cool to obtain a polyvinyl alcohol aqueous solution.

[0032] When the polyvinyl alcohol aqueous solution and the silane coupling agent aqueous solution are mixed, stirring is added to improve the mixing effect.

[0033] When zeolite powder is added into the mixed solution for reaction, the reaction temperature is 60-80° C. and the reaction time is 1-2 h.

[0034] Embodiment 1:

[0035] See also Figure 1 , Figure 1 It is a step flow chart of Example 1 of the present invention.

[0036] In this embodiment, the preparation process of the highly weather-resistant and environmentally friendly gold ink material is as follows:

[0037] S101, mixing polyvinyl alcohol and water in a mass ratio of 10-12:100, stirring continuously for 25-30 minutes at room temperature, then heating to 90-95° C., keeping the temperature for 2-3 hours, and cooling to obtain a polyvinyl alcohol aqueous solution;

[0038] S102, mixing 20 parts of polyvinyl alcohol aqueous solution with 30 parts of silane coupling agent aqueous solution to prepare a mixed solution for standby use;

[0039] S103, taking 8 parts of zeolite powder and adding them into the mixed solution for reaction, filtering and drying after the reaction is completed to obtain treated zeolite powder;

[0040] S104, take 100 parts of water-based acrylic resin, 25 parts of pigment, 3 parts of defoaming agent, 3 parts of leveling agent, 1 part of thickener and 15 parts of silica sol and mix them evenly, then add 5 parts of calcium silicate whisker and treated zeolite powder in proportion and mix them evenly to obtain a highly weather-resistant and environmentally friendly gold ink material.

[0041] Embodiment 2:

[0042] See also Figure 2 , Figure 2 It is a step flow chart of Example 2 of the present invention.

[0043] In this embodiment, the preparation process of the highly weather-resistant and environmentally friendly gold ink material is as follows:

[0044] S201, mixing polyvinyl alcohol and water in a mass ratio of 10-12:100, stirring continuously for 25-30 minutes at room temperature, then heating to 90-95° C., keeping the temperature for 2-3 hours, and cooling to obtain a polyvinyl alcohol aqueous solution;

[0045] S202, taking 25 parts of polyvinyl alcohol aqueous solution and 35 parts of silane coupling agent aqueous solution and mixing them to prepare a mixed solution for standby use;

[0046] S203, taking 9 parts of zeolite powder and adding them into the mixed solution for reaction, filtering and drying after the reaction is completed to obtain treated zeolite powder;

[0047] S204, take 110 parts of water-based acrylic resin, 28 parts of pigment, 4 parts of defoaming agent, 4 parts of leveling agent, 2 parts of thickener and 17 parts of silica sol and mix them evenly, then add 7 parts of calcium silicate whisker and treated zeolite powder in proportion and mix them evenly to obtain a highly weather-resistant and environmentally friendly gold ink material.

[0048] Embodiment 3:

[0049] See also Figure 3 , Figure 3 It is a step flow chart of Example 3 of the present invention.

[0050] In this embodiment, the preparation process of the highly weather-resistant and environmentally friendly gold ink material is as follows:

[0051] S301, mixing polyvinyl alcohol and water in a mass ratio of 10-12:100, stirring continuously for 25-30 minutes at room temperature, then heating to 90-95°C, keeping the temperature for 2-3 hours, and cooling to obtain a polyvinyl alcohol aqueous solution;

[0052] S302, taking 30 parts of polyvinyl alcohol aqueous solution and 40 parts of silane coupling agent aqueous solution and mixing them to prepare a mixed solution for standby use;

[0053] S303, taking 10 parts of zeolite powder and putting them into the mixed solution for reaction, filtering and drying after the reaction is completed to obtain treated zeolite powder;

[0054] S304, take 120 parts of water-based acrylic resin, 30 parts of pigment, 5 parts of defoaming agent, 5 parts of leveling agent, 3 parts of thickener and 20 parts of silica sol and mix them evenly, then add 8 parts of calcium silicate whisker and treated zeolite powder according to proportion and mix them evenly to obtain highly weather-resistant and environmentally friendly gold ink material.

[0055] The test results of Examples 1 to 3 are shown in the following table:

[0056] Test items Example 1 Example 2 Example 3 Comparative Example 1 tenacity 102pa 100pa 108pa 80pa PCB specific gravity 0.013％ 0.013％ 0.014％ 0.021％ luster 70.1 degrees 70.7 degrees 70.4 degrees 65.2 degrees Friction resistance 103 times / 4 pounds 107 times / 4 pounds 106 times / 4 pounds 72 reps / 4 lbs

[0057] From the above test results, it can be obtained that the toughness of the ink prepared by the formula and preparation method of the present invention can be controlled between 100-110Pa, and the toughness of the comparative example is lower than 100Pa, which proves that the toughness of the ink of the present invention is better; the specific gravity of polychlorinated biphenyls in the ink of the embodiment of the present invention is lower than 0.015%, which is less than 0.021% of the comparative example. It proves that the polychlorinated biphenyl content control technology of the present invention is higher; the glossiness of the ink of the experimental example of the present invention is about 70%, which is higher than 65.2% of the comparative example, which proves that the glossiness of this product is better, and the friction resistance of the ink of the embodiment of the present invention is about 105 times / 4 pounds, which is higher than 72 times / 4 pounds of the comparative example, which proves that the friction resistance of this product is better. Through the test results, it is found that the high weather resistance and environmentally friendly gold ink material prepared by the formula and preparation technology of the present invention can better show the advantages of environmental protection, high toughness, high gloss, wear resistance, etc. in the printing process, and can solve a series of quality problems existing in existing inks.

[0058] The highly weather-resistant and environmentally friendly gold ink material and preparation method of the present invention are used, and silica sol is used to improve the adhesion of ink to the substrate. At the same time, calcium silicate whiskers and zeolite powder are used to make the ink layer smoother and more uniform. The calcium silicate whiskers contain silicon hydroxyl groups and can form hydrogen bonds with the hydroxyl groups in the silica sol. The calcium silicate whiskers form a network structure in the system that can effectively connect the silica sol, thereby reducing the large volume shrinkage of the silica sol during film formation. At the same time, the zeolite powder filled in the network structure can play a skeleton support role, thereby further reducing the volume shrinkage of the silica sol during film formation. The composite of silica sol, calcium silicate whiskers and zeolite powder effectively improves the adhesion firmness of the ink on the surface of the substrate, and the stability of the ink layer is effectively improved, reducing the possibility of ink migration. The zeolite powder is treated with polyvinyl alcohol and a silane coupling agent so that the zeolite powder can be stably present in the system, further improving the adhesion firmness of the ink layer on the surface of the substrate and reducing the possibility of ink migration.

[0059] In this way, the technical problem that volatile organic compounds (VOCs) are commonly contained in inks in the technology is solved. These compounds will evaporate in large quantities during the printing and use of the ink, seriously polluting the air environment and posing a potential threat to human health.

[0060] What is disclosed above is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. A highly weather-resistant and environmentally friendly gold ink material, characterized in that: It includes 20-30 parts of polyvinyl alcohol aqueous solution, 30-40 parts of silane coupling agent aqueous solution, 100-120 parts of water-based acrylic resin, 25-30 parts of pigment, 3-5 parts of amide defoamer, 3-5 parts of leveling agent, 1-3 parts of thickener, 15-20 parts of silica sol, 5-8 parts of calcium silicate whisker and 8-10 parts of zeolite powder.

2. A method for preparing a highly weather-resistant and environmentally friendly gold ink material, used to prepare the highly weather-resistant and environmentally friendly gold ink material as claimed in claim 1, characterized in that: The steps include: Step 1, preparing a polyvinyl alcohol aqueous solution for standby use; Step 2: Mix the polyvinyl alcohol aqueous solution and the silane coupling agent aqueous solution in proportion to prepare a mixed solution for standby use; Step 3, adding zeolite powder according to a proportion into the mixed solution for reaction, filtering and drying after the reaction is completed to obtain treated zeolite powder; Step 4: Mix water-based acrylic resin, pigment, defoamer, leveling agent, thickener and silica sol in proportion, then add calcium silicate whiskers and treated zeolite powder in proportion and mix well to obtain a highly weather-resistant and environmentally friendly gold ink material.

3. The method for preparing the highly weather-resistant and environmentally friendly gold ink material according to claim 2, characterized in that: The specific method for preparing the polyvinyl alcohol aqueous solution for standby use is as follows: Mix polyvinyl alcohol and water in a mass ratio of 10-12:100, stir continuously for 25-30 minutes at room temperature, then heat to 90-95°C, keep warm for 2-3 hours, and cool to obtain a polyvinyl alcohol aqueous solution.

4. The method for preparing the highly weather-resistant and environmentally friendly gold ink material according to claim 3, characterized in that: When the polyvinyl alcohol aqueous solution and the silane coupling agent aqueous solution are mixed, stirring is added to improve the mixing effect.

5. The highly weather-resistant and environmentally friendly gold ink material and preparation method as claimed in claim 4, characterized in that: When zeolite powder is added to the mixed solution for reaction, the reaction temperature is 60-80°C and the reaction time is 1-2h.

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