A quick-drying pearlescent printing paper suitable for various printing methods and a production process thereof
By forming a resin layer on printing paper and coating it with a pearlescent coating, combined with nano zinc oxide modification treatment to prepare an antibacterial agent, the problems of insufficient antibacterial properties and poor versatility of printing paper are solved, and high-quality, multi-purpose printing paper production is realized.
Patent Information
- Application Number
- CN202410396296.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-03
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2044-04-03
AI Technical Summary
Existing printing paper has insufficient antibacterial properties and lacks versatility, making it difficult to adapt to various printing methods, which affects its quality and service life.
A pearlescent coating composed of silver-white pearlescent powder, modified polyvinyl alcohol aqueous solution, inorganic release agent and antibacterial agent is formed by forming a resin layer and coating the pearlescent coating through a screw extruder. Combined with the modification treatment of nano zinc oxide, an antibacterial agent is prepared to realize the production of multi-purpose printing paper.
The produced printing paper has excellent antibacterial properties and a pearlescent effect, a smooth and delicate appearance, is suitable for various printing methods, and has an extended service life.
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Figure BDA0004774113290000121
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the printing technical field, specifically to a quick-drying pearlescent printing paper suitable for various printing methods and a production process thereof. BACKGROUND
[0002] Printing paper is a general term for paper used for various printed matters. For example, letterpress printing paper, offset printing paper, high-grade glossy card paper, newsprint, writing paper, etc. Its characteristics are good printing adaptability and high opacity. It can be divided into newsprint, book paper, cover paper, security paper, etc. according to the use, and divided into letterpress printing paper, gravure printing paper, offset printing paper, etc. according to the printing method.
[0003] At present, there is basically no general-purpose pearlescent printing paper suitable for offset printing, gravure printing, flexographic printing and digital printing on the market, especially for immediate reprinted products of traditional printing, which is very limited. Moreover, the antibacterial performance of the printing paper produced by the prior art is relatively insufficient, which seriously affects its quality and also shortens its service life to a certain extent.
[0004] Based on this, the present application provides a quick-drying pearlescent printing paper suitable for various printing methods and a production process thereof. SUMMARY
[0005] The present application aims to provide a quick-drying pearlescent printing paper suitable for various printing methods and a production process thereof. The printing paper produced by the present application not only has excellent antibacterial performance, but also has good pearlescent effect. Moreover, its appearance is relatively smooth and delicate without bright spots, effectively ensuring the quality and quality of the produced printing paper, and prolonging its service life.
[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme:
[0007] A quick-drying pearlescent printing paper suitable for various printing methods, which comprises a printing base paper, a resin layer and a pearlescent coating layer. The resin layer is located at both free end faces of the printing base paper, and the free end faces of the resin layer are uniformly coated with the pearlescent coating layer. The pearlescent coating used in the pearlescent coating layer is composed of the following raw materials in parts by weight: 10-15% of silver-white series pearlescent powder, 0.1-0.2% of inorganic dispersing agent, 20-30% of modified polyvinyl alcohol aqueous solution with a concentration of 10 wt%, 5-10% of inorganic release agent, 5-8% of antibacterial agent, 1-2% of triethylene glycol monobutyl ether, 1.5-4.0% of surfactant, and the balance of anhydrous ethanol.
[0008] Further, the silver-white series pearl powder is compounded by the silver-white pearl powder of the anatase type with model TZ1004 and the silver-white pearl powder of the rutile type with model TZ1202 according to the mass ratio of 1:0.6-1.2; and the particle size of the silver-white pearl powder of the anatase type and the silver-white pearl powder of the rutile type is all 10-60 μm.
[0009] Further, the preparation method of the modified polyvinyl alcohol is as follows: polyvinyl alcohol with the polymerization degree of 1000-3000 and the alcoholysis degree of 80-95% is fully dissolved in isopropyl alcohol with the mass of 5-8 times of the polyvinyl alcohol, under the protection of nitrogen, 3-5 times of the polyvinyl alcohol in mass and sodium hydroxide with the concentration of 1.5-2.5 wt% are added into the isopropyl alcohol under stirring, the mixture is uniformly stirred and heated to 60-80 ℃, and then is placed for 1-3 h at the temperature; then 30-60% of the polyvinyl alcohol in mass of epoxy propyl dimethyl eicosyl ammonium chloride is added into the mixture, the mixture is uniformly stirred and reacted for 8-12 h; after the reaction, the pH of the product components is adjusted to 7.3-7.8; then the product components are washed with n-hexane and acetone alternately for 2-3 times; after the washing, the product components are transferred into a vacuum drying oven and vacuum dried at the temperature of 40-50 ℃ for 4-7 h, and finally the modified polyvinyl alcohol is obtained.
[0010] Further, the inorganic release agent is prepared by mixing activated kaolin and nano-alumina; and the amount of the nano-alumina is 92-95 wt% of the inorganic release agent, and the rest is activated kaolin.
[0011] Further, the preparation method of the activated kaolin is as follows: the kaolin is calcined at the temperature of 550-700 ℃ for 3-6 h; after the calcination, the calcined product is ground into 100-200 mesh in a grinding device, and finally the activated kaolin is obtained.
[0012] Further, the preparation method of the antibacterial agent comprises the following steps:
[0013] I. nano-zinc oxide is ultrasonically dispersed in ethanol aqueous solution with the concentration of 50-70% according to the solid-liquid ratio of 0.005-0.01 g / mL, then 40-60% of 3-aminopropyl triethoxysilane in mass is added into the nano-zinc oxide, the mixture is uniformly stirred and heated to 50-60 ℃, and then is reacted for 3-5 h under the temperature;
[0014] II, after the reaction is completed, the obtained product components are sequentially filtered, washed and dried; the obtained nano-powder is ultrasonically dispersed in anhydrous ethanol at a solid-liquid ratio of 0.008-0.012 g / mL, then 3,7-dimethyl-2,6-octadienal and 3-methoxy-4-hydroxybenzaldehyde are sequentially added to the nano-powder at 2-5% and 3-6% of the mass of the nano-powder, respectively, the mixture is uniformly stirred, and then the mixture is kept at a temperature of 40-50°C and stirred for 5-8 hours;
[0015] III, after the reaction is completed, the obtained reaction product is sequentially filtered, washed and dried, and the final product is an antibacterial agent.
[0016] Further, the inorganic dispersant is any one of sodium tripolyphosphate, sodium hexametaphosphate, calcium lignosulfonate and sodium lignosulfonate.
[0017] Further, the surfactant is any one of cocamidopropyl betaine, lauryl betaine and lauryl amidopropyl betaine.
[0018] Further, the raw material for the resin layer is mixed and prepared from polyethylene, 2-4% of polypyrrole and 5-8% of VJ-007 organic silicon conductive agent.
[0019] A production process of a quick-drying pearlescent printing paper suitable for various printing methods, comprising the following steps:
[0020] Step one, uniformly mix the raw materials for forming the resin layer, melt the raw materials, then extrude the raw materials by using a screw extruder, and then cool and press by using a cold roller to form the resin layer on both sides of the base paper, and control the roughness Ra of the surface of the resin layer to be 1.0-2.5 by controlling the concave-convex degree of the cold roller;
[0021] Step two, put the silver-white series pearlescent powder, inorganic dispersant, modified polyvinyl alcohol aqueous solution, inorganic release agent, antibacterial agent, triethylene glycol monobutyl ether and the remaining materials into a mixing device, and mechanically stir at a speed of 500-800 r / min for 30-40 min; after uniform stirring, the obtained pearlescent coating is stored and used;
[0022] Step three, uniformly coat the pearlescent coating on the free end surface of the resin layer on both sides of the printing base paper, then dry at a temperature of 90-100°C for 3-5 min, and the final product is a quick-drying pearlescent printing paper suitable for various printing methods.
[0023] Compared with the prior art, the beneficial effects of the present application are:
[0024] 1. The silver-white series pearl powder is used as raw material, inorganic dispersant, modified polyvinyl alcohol aqueous solution, and inorganic release agent are used as raw materials in the present application, the prepared pearl printing paper not only has good pearl effect, but also has smooth and delicate appearance without bright spots. The quality and quality of the produced printing paper are effectively ensured. In addition, the printing paper product produced by the present application can be suitable for traditional printing method and digital printing condition, and is different from other ordinary printing paper. Its surface contains vivid pearl product, so that the printing paper is more suitable for plane paper and packaging paper, and is a multipurpose product. If it is further pressed by a machine, it is a product with paper texture.
[0025] 2. In the present application, nano zinc oxide is used as a starting material, which is put into an ethanol aqueous solution and 3-aminopropyl triethoxysilane is added, and after uniform mixing and stirring, chemical reaction occurs between 3-aminopropyl triethoxysilane and the hydroxyl groups on the surface of nano zinc oxide, realizing the preliminary modification of nano zinc oxide. The nano zinc oxide modified by 3-aminopropyl triethoxysilane is ultrasonically dispersed in anhydrous ethanol, and 3,7-dimethyl-2,6-octadienal and 3-methoxy-4-hydroxybenzaldehyde are added thereto, and after uniform mixing and stirring, the mixture is heated and stirred to react, so that 3,7-dimethyl-2,6-octadienal and 3-methoxy-4-hydroxybenzaldehyde chemically react with the preliminary modified nano zinc oxide to graft, and finally the two are grafted on the oxidized surface through chemical bonds to prepare the antibacterial agent finished product. The obtained antibacterial agent has excellent antibacterial performance under the synergistic cooperation of nano zinc oxide, 3,7-dimethyl-2,6-octadienal and 3-methoxy-4-hydroxybenzaldehyde, effectively ensuring the grade of the produced printing paper. DETAILED DESCRIPTION
[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0027] Embodiment 1
[0028] The application discloses a quick-drying pearlescent printing paper suitable for various printing methods, which comprises a printing base paper, a resin layer and a pearlescent coating; the resin layer is arranged on two free end surfaces of the printing base paper, and the free end surfaces of the resin layer are uniformly coated with the pearlescent coating; the pearlescent coating is prepared from the following raw materials in parts by weight: 10 parts of silver-white series pearlescent powder, 0.1 part of sodium tripolyphosphate, 20 parts of a modified polyvinyl alcohol aqueous solution with a concentration of 10 wt%, 5 parts of inorganic release agent, 5 parts of antibacterial agent, 1 part of triethylene glycol monobutyl ether, 1.5 parts of cocamidopropyl betaine, and the balance of anhydrous ethanol.
[0029] The raw material of the resin layer is prepared by mixing polyethylene, 2 wt% of polypyrrole and 5 wt% of VJ-007 organic silicon conductive agent.
[0030] The silver-white series pearlescent powder is prepared by compounding a silver-white pearlescent powder of a type TZ1004 and a silver-white pearlescent powder of a type TZ1202 at a mass ratio of 1:0.6, and the particle size of the two types of the silver-white pearlescent powder is 10 microns.
[0031] The modified polyvinyl alcohol is prepared by the following steps: polyvinyl alcohol with a polymerization degree of 1000 and an alcoholysis degree of 80% is fully dissolved in isopropyl alcohol with a mass of 5 times that of the polyvinyl alcohol, sodium hydroxide with a mass of 3 times that of the polyvinyl alcohol and a concentration of 1.5 wt% is added into the isopropyl alcohol under nitrogen protection while stirring, the mixture is uniformly stirred and heated to 60 DEG C, and then is kept at the temperature for 1 h; then, epoxypropyl dimethyl eicosyl ammonium chloride with a mass of 30% of the polyvinyl alcohol is added into the mixture, the mixture is uniformly stirred and reacted for 8 h; after the reaction, the pH of the product is adjusted to 7.3; then, the product is washed with n-hexane and acetone alternately for 2 times; after the washing, the product is transferred into a vacuum drying oven and vacuum dried at a temperature of 40 DEG C for 4 h, and finally the modified polyvinyl alcohol is obtained.
[0032] The inorganic release agent is prepared by mixing activated kaolin and nano-alumina, and the mass of the nano-alumina is 92 wt% of the inorganic release agent, and the balance is the activated kaolin; the activated kaolin is prepared by the following steps: the kaolin is calcined at a temperature of 550 DEG C for 3 h, and then is ground to 100 mesh in a grinding device, and finally the activated kaolin is obtained.
[0033] The preparation method of the antibacterial agent comprises the following steps:
[0034] Ⅰ, nano-zinc oxide is ultrasonically dispersed in an ethanol aqueous solution with a concentration of 50% at a solid-liquid ratio of 0.005 g / mL, then 3-aminopropyl triethoxysilane with a mass of 40% of the nano-zinc oxide is added into the ethanol aqueous solution, the mixture is uniformly stirred and heated to 50 DEG C, and then is kept at the temperature for 3 h.
[0035] II, after the reaction is completed, the resulting product components are sequentially filtered, washed and dried; the resulting nanometer powder is ultrasonically dispersed in anhydrous ethanol at a solid-liquid ratio of 0.008 g / mL, then 3,7-dimethyl-2,6-octadienal and 3-methoxy-4-hydroxybenzaldehyde are sequentially added thereto at a mass of 2% and 3% of the nanometer powder, respectively, the mixture is uniformly stirred and reacted at a temperature of 40°C for 5 h;
[0036] III, after the reaction is completed, the resulting reaction product is sequentially filtered, washed and dried, and the final product is an antibacterial agent.
[0037] A production process of a quick-drying pearlescent printing paper suitable for various printing methods, comprising the following steps:
[0038] Step one, uniformly mix the raw materials for forming the resin layer, melt them, then extrude them using a screw extruder, and then cool and press them using a cold roller to form resin layers on both sides of the base paper, and control the roughness Ra of the surface of the resin layer to be 1.0 by controlling the concave-convex degree of the cold roller;
[0039] Step two, put the silver-white series pearlescent powder, inorganic dispersing agent, modified polyvinyl alcohol aqueous solution, inorganic release agent, antibacterial agent, triethylene glycol monobutyl ether and the remaining materials into a mixing device, and mechanically stir them at a speed of 500 r / min for 30 min; after uniform stirring, the obtained pearlescent coating is stored and used as needed;
[0040] Step three, uniformly coat the pearlescent coating on the free end surface of the resin layer on both sides of the printing base paper, then dry it at a temperature of 90°C for 3 min, and the final product is a quick-drying pearlescent printing paper suitable for various printing methods.
[0041] Example 2
[0042] The production process of the quick-drying pearlescent printing paper suitable for various printing methods in this example is basically the same as that in Example 1, except that the specific proportions of the pearlescent coating used in the two examples and the preparation methods of the modified polyvinyl alcohol and the antibacterial agent are different. The specific proportions of the pearlescent coating used in this example and the preparation methods of the modified polyvinyl alcohol and the antibacterial agent are as follows:
[0043] The pearlescent coating used in the pearlescent coating layer is composed of the following raw materials by weight: 12% of silver-white series pearlescent powder, 0.15% of sodium hexametaphosphate, 25% of modified polyvinyl alcohol aqueous solution with a concentration of 10 wt%, 8% of inorganic release agent, 6% of antibacterial agent, 1.5% of triethylene glycol monobutyl ether, 3.0% of lauryl betaine, and the balance of anhydrous ethanol;
[0044] The raw material for the resin layer is prepared by mixing polyethylene, 3% of polypyrrole and 6% of VJ-007 organic silicon conductive agent by mass;
[0045] The silver-white pearl powder is prepared by mixing silver-white pearl powder of type TZ1004 and rutile type silver-white pearl powder of type TZ1202 in equal mass, and the particle size of the silver-white pearl powder of the two types is 30 μm.
[0046] The modified polyvinyl alcohol is prepared by the following method: polyvinyl alcohol with a polymerization degree of 2000 and an alcoholysis degree of 85% is fully dissolved in isopropyl alcohol with a mass of 6 times that of the polyvinyl alcohol, under nitrogen protection, 4 times the mass of the polyvinyl alcohol of sodium hydroxide with a concentration of 2.0 wt% is added thereto while stirring, after uniform mixing and stirring, the temperature is raised to 70°C, and the mixture is kept at this temperature for 2 hours; then 50% of the mass of the polyvinyl alcohol of epoxy propyl dimethyl eicosyl ammonium chloride is added thereto, after uniform mixing and stirring, the mixture is reacted for 10 hours; after the reaction is completed, the pH of the product is adjusted to 7.5; then the product is washed with n-hexane and acetone alternately for 2 times; after the washing is completed, the product is transferred into a vacuum drying oven and vacuum dried at a temperature of 45°C for 5 hours, and the final product is the modified polyvinyl alcohol.
[0047] The inorganic release agent is prepared by mixing activated kaolin and nano-alumina; the amount of the nano-alumina is 93 wt% of the inorganic release agent, and the rest is activated kaolin; the activated kaolin is prepared by the following method: kaolin is calcined at a temperature of 650°C for 5 hours; after the calcination is completed, the product is ground to 150 mesh in a grinding device, and the final product is the activated kaolin.
[0048] The preparation method of the antibacterial agent comprises the following steps:
[0049] I. Nano-zinc oxide is ultrasonically dispersed in 60% ethanol aqueous solution at a solid-liquid ratio of 0.008 g / mL, then 50% of the mass of the nano-zinc oxide of 3-aminopropyl triethoxysilane is added thereto, the obtained mixture is heated to 55°C, and kept at this temperature for 4 hours for reaction;
[0050] II. After the reaction is completed, the obtained product is filtered, washed and dried in sequence; the obtained nano-powder is ultrasonically dispersed in anhydrous ethanol at a solid-liquid ratio of 0.01 g / mL, then 3% of the mass of the nano-powder of 3,7-dimethyl-2,6-octadienal and 5% of the mass of the nano-powder of 3-methoxy-4-hydroxybenzaldehyde are added thereto in sequence, the mixture is uniformly stirred and reacted at a temperature of 45°C for 5-8 hours;
[0051] III. After the reaction is completed, the obtained reaction product is filtered, washed and dried in sequence, and the final product is the antibacterial agent.
[0052] Example 3
[0053] The production process of the quick-drying pearlescent printing paper suitable for various printing methods in this example is basically the same as that in Example 1, except that the specific proportions of the pearlescent coating used in the two and the preparation methods of the modified polyvinyl alcohol and the antibacterial agent are different. The specific proportions of the pearlescent coating used in this example and the preparation methods of the modified polyvinyl alcohol and the antibacterial agent are as follows:
[0054] The pearlescent coating used in the pearlescent coating layer is composed of the following raw materials by weight: 15% silver-white series pearlescent powder, 0.2% calcium lignosulfonate, 30% modified polyvinyl alcohol aqueous solution with a concentration of 10 wt%, 10% inorganic release agent, 8% antibacterial agent, 2% triethylene glycol monobutyl ether, 4.0% lauryl amido propyl betaine, and the balance is anhydrous ethanol.
[0055] The raw materials used in the resin layer are mixed and prepared from polyethylene and 4% polypyrrole and 8% VJ-007 organic silicon conductive agent by mass.
[0056] The silver-white series pearlescent powder is compounded by 1:1.2 mass ratio of sharp titanium type silver-white pearlescent powder with model number TZ1004 and rutile type silver-white pearlescent powder with model number TZ1202; and the particle sizes of the sharp titanium type silver-white pearlescent powder and the rutile type silver-white pearlescent powder are both 60 μm.
[0057] The preparation method of the modified polyvinyl alcohol is as follows: polyvinyl alcohol with a polymerization degree of 3000 and an alcoholysis degree of 95% is fully dissolved in isopropyl alcohol with a mass of 8 times that of the polyvinyl alcohol, under nitrogen protection, 5 times the mass of the polyvinyl alcohol, 2.5 wt% sodium hydroxide solution is added thereto while stirring, after uniform mixing and stirring, the temperature is raised to 80°C, and it is treated at this temperature for 3 hours; then 60% of the mass of the polyvinyl alcohol, epoxy propyl dimethyl eicosyl ammonium chloride is added thereto, after uniform mixing and stirring, it is reacted for 12 hours; after the reaction is completed, the pH of the obtained product components is adjusted to 7.8; then the product components are washed with n-hexane and acetone alternately for 3 times; after washing is completed, it is transferred to a vacuum drying oven, and vacuum dried at a temperature of 50°C for 7 hours, and the finally obtained product is the modified polyvinyl alcohol.
[0058] The inorganic release agent is mixed and prepared from activated kaolin and nano-alumina; and the amount of the nano-alumina is 95 wt% of the inorganic release agent, and the balance is activated kaolin; wherein the preparation method of the activated kaolin is: the kaolin is calcined at a temperature of 700 for 6 hours; after calcination is completed, it is ground to 200 mesh in a grinding equipment, and the finally obtained product is the activated kaolin.
[0059] The preparation method of the antibacterial agent includes the following steps:
[0060] I. Nanometer zinc oxide is dispersed in 70% ethanol aqueous solution at a solid-liquid ratio of 0.01 g / mL, then 3-aminopropyl triethoxysilane with a mass of 60% of the nanometer zinc oxide is added, the mixture is stirred uniformly, then the mixture is heated to 60°C, and is kept at the temperature for 5 hours of stirring reaction;
[0061] II. After the reaction is completed, the obtained product is filtered, washed and dried in sequence; the obtained nanometer powder is dispersed in anhydrous ethanol at a solid-liquid ratio of 0.012 g / mL, then 3,7-dimethyl-2,6-octadienal with a mass of 5% of the nanometer powder and 3-methoxy-4-hydroxybenzaldehyde with a mass of 6% of the nanometer powder are added in sequence, the mixture is stirred uniformly, and is kept at a temperature of 50°C for 8 hours of stirring reaction;
[0062] III. After the reaction is completed, the obtained reaction product is filtered, washed and dried in sequence, and the final obtained product is the antibacterial agent product.
[0063] Comparative Example 1, which is different from Example 1, is that equal amount of nanometer zinc oxide is used instead of the antibacterial agent.
[0064] Comparative Example 2, which is different from Example 1, is that equal amount of 3,7-dimethyl-2,6-octadienal is used instead of 3-methoxy-4-hydroxybenzaldehyde.
[0065] Comparative Example 3, which is different from Example 1, is that equal amount of 3-methoxy-4-hydroxybenzaldehyde is used instead of 3,7-dimethyl-2,6-octadienal.
[0066] Performance test: the related performances of the quick-drying pearlescent printing paper samples provided by Examples 1-3 and Comparative Examples 1-3 are tested respectively, and the obtained test data are recorded in the following table:
[0067]
[0068] It can be known from the comparison and analysis of the related data in the table that the quick-drying pearlescent printing paper produced by the application not only has excellent antibacterial performance, but also has good pearlescent effect. Furthermore, the appearance is relatively smooth and delicate, and there is no bright spot, which effectively ensures the quality and quality of the produced printing paper. At the same time, the technical scheme provided by the application is also relatively extensive. Therefore, the quick-drying pearlescent printing paper suitable for various printing methods and the production process provided by the application have broader market prospects, and are more suitable for promotion.
[0069] In the description of the specification, reference to "one embodiment", "an example", "a specific example" or the like 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 application. The appearances of the phrases "in one embodiment", "an example", "a specific example" or the like in various places in the specification are not necessarily referring to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.
[0070] The preferred embodiments of the application disclosed above are only to help explain the application. The preferred embodiments do not describe all the details of the application and limit the application to the specific embodiments described. Obviously, many modifications and variations can be made in light of the contents of the specification. The specification selects and specifically describes these embodiments in order to better explain the principles and practical application of the application, so that those skilled in the art can well understand and utilize the application. The application is limited only by the claims and their full scope and equivalents.
Claims
1. A quick-drying pearlescent printing paper suitable for various printing methods, the quick-drying pearlescent printing paper comprising a printing base paper, a resin layer, and a pearlescent coating layer; the resin layer is located on both free end surfaces of the printing base paper, and the free end surfaces of the resin layer are uniformly coated with the pearlescent coating layer; characterized in that, The pearlescent coating used by the pearlescent coating layer is composed of the following raw materials by weight: 10-15% silver-white series pearlescent powder, 0.1-0.2% inorganic dispersant, 20-30% modified polyvinyl alcohol aqueous solution with a concentration of 10 wt%, 5-10% inorganic release agent, 5-8% antibacterial agent, 1-2% triethylene glycol monobutyl ether, 1.5-4.0% surfactant, and the balance of anhydrous ethanol; The preparation method of the modified polyvinyl alcohol is as follows: polyvinyl alcohol with a polymerization degree of 1000-3000 and an alcoholysis degree of 80-95% is fully dissolved in isopropanol with a mass of 5-8 times that of the polyvinyl alcohol, under nitrogen protection, 3-5 times the mass of the polyvinyl alcohol of sodium hydroxide with a concentration of 1.5-2.5 wt% is added thereto while stirring, after uniform mixing and stirring, the temperature is raised to 60-80℃, and the mixture is statically treated at this temperature for 1-3 h; then 30-60% of the mass of the polyvinyl alcohol of epoxy propyl dimethyl eicosyl ammonium chloride is added thereto, after uniform mixing and stirring, the mixture is reacted for 8-12 h; after the reaction is completed, the pH of the obtained product components is adjusted to 7.3-7.8; then the product components are washed with n-hexane and acetone alternately for 2-3 times; after the washing is completed, the product is transferred to a vacuum drying oven, and vacuum dried at a temperature of 40-50℃ for 4-7 h, and the finally obtained product is the modified polyvinyl alcohol; The inorganic release agent is prepared by mixing activated kaolin and nano-alumina; the amount of the nano-alumina is 92-95 wt% of the inorganic release agent, and the balance is activated kaolin; the preparation method of the activated kaolin is as follows: the kaolin is calcined at a high temperature of 550-700℃ for 3-6 h; After the calcination is completed, the product is transferred to a grinding device and ground to 100-200 mesh, and the finally obtained product is the activated kaolin; The preparation method of the antibacterial agent comprises the following steps: Ⅰ. Nano-zinc oxide is ultrasonically dispersed in an ethanol aqueous solution with a concentration of 50-70% at a solid-liquid ratio of 0.005-0.01 g / mL, then 40-60% of the mass of the nano-zinc oxide of 3-aminopropyl triethoxysilane is added thereto, the obtained mixture components are heated to 50-60℃, and the mixture is stirred and reacted at this temperature for 3-5 h; Ⅱ. After the reaction is completed, the obtained product components are sequentially subjected to filtration, washing and drying treatment; the obtained nano-powder is ultrasonically dispersed in anhydrous ethanol at a solid-liquid ratio of 0.008-0.012 g / mL, then 2-5% of the mass of the nano-powder of 3,7-dimethyl-2,6-octadienal and 3-6% of 3-methoxy-4-hydroxybenzaldehyde are sequentially added thereto, the mixture is uniformly stirred and reacted at a temperature of 40-50℃ for 5-8 h; Ⅲ. After the reaction is completed, the obtained reaction product is sequentially subjected to filtration, washing and drying treatment, and the finally obtained product is the antibacterial agent.
2. The quick-drying pearlescent printing paper suitable for various printing methods according to claim 1, characterized in that: The silver-white series pearl powder is compounded by the silver-white pearl powder of the type TZ1004 and the silver-white pearl powder of the type TZ1202 in a mass ratio of 1:0.6-1.2; and the particle size of the silver-white pearl powder of the type TZ1004 and the silver-white pearl powder of the type TZ1202 is 10-60 μm.
3. The quick-drying pearlescent printing paper suitable for various printing methods according to claim 1, characterized in that: The inorganic dispersing agent is any one of sodium tripolyphosphate and sodium hexametaphosphate.
4. The quick-drying pearlescent printing paper suitable for various printing methods according to claim 1, characterized in that: The surfactant is any one of cocamide propyl betaine, lauryl betaine and lauryl propyl betaine.
5. The quick-drying pearlescent printing paper suitable for various printing methods according to claim 1, characterized in that: The raw material of the resin layer is mixed and prepared by polyethylene, 2-4% of polypyrrole, 5-8% of VJ-007 organic silicon conductive agent.
6. The production process of the quick-drying pearlescent printing paper suitable for various printing methods according to any one of claims 1 to 5, characterized in that, The method comprises the following steps: Step one, the raw materials of the resin layer are mixed and melted, then extruded by a screw extruder, and then cold-pressed by a cold roller to form the resin layer on both sides of the base paper, and the roughness Ra of the surface of the resin layer is controlled to be 1.0-2.5 by controlling the concave-convex degree of the cold roller; Step two, the silver-white series pearl powder, the inorganic dispersing agent, the modified polyvinyl alcohol solution, the inorganic separating agent, the antibacterial agent, the triethylene glycol monobutyl ether and the rest of the materials are put into a mixing device and mechanically stirred at a speed of 500-800 r / min for 30-40 min; after being stirred evenly, the obtained pearl coating is stored and used; Step three, the pearl coating is evenly coated on the free end surface of the resin layer on both sides of the printing base paper, and then dried at a temperature of 90-100 ℃ for 3-5 min, and finally the obtained is the fast-drying type pearl printing paper product suitable for various printing methods.
Citation Information
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