Preparation method of antibacterial and antistatic release paper

Abstract

The invention discloses a preparation method of antibacterial and antistatic release paper, and belongs to the technical field of release paper preparation, and the preparation method comprises the following steps: S1, adding an antibacterial and antistatic filler into plant paper pulp, uniformly mixing, papermaking, extruding to remove water, drying and calendering to obtain raw paper, S2, coating the surface of the raw paper with a layer of polyethylene, and forming a lamination layer on the surface of the raw paper; s3, uniformly mixing a release agent and an antibacterial and antistatic filler, coating the surface of the lamination layer with the mixture, and performing irradiation curing by using an external lamp to form a release layer, so as to obtain the antibacterial and antistatic release paper, the antibacterial and antistatic filler is added into the body paper and the release layer, so that the antibacterial and antistatic properties of the release paper are comprehensively improved, and good release property is kept.

Description

Technical Field

[0001] The invention relates to the technical field of release paper preparation, and in particular to an anti-skid road marking paint and a preparation method thereof. Background Art

[0002] Release paper is a material widely used in many fields such as food packaging, electronic manufacturing, printing and composite material manufacturing. Its main function is to prevent the prepreg from sticking and protect it from contamination. This paper is made of a paper base coated with a specific anti-sticking substance. However, in the prior art, release paper is prone to generate static electricity during use, resulting in static electricity adhesion with other papers or objects. At the same time, due to the lack of antibacterial function, the application of release paper is limited.

[0003] In response to the above problems, the patent with application number CN201911232308.8 proposes a method for preparing antibacterial and antistatic release paper. This method uses fast-growing pine wood as pulp raw material, and obtains glassine base paper through processes such as papermaking and papermaking. Subsequently, the glassine base paper is soaked in an acetic acid solution, corona pre-treated after drying, and a release agent mixed with an antioxidant, chitosan, a UV absorber and an antistatic agent is coated thereon, and the antibacterial and antistatic release paper can be obtained after drying again. This method not only significantly improves the antibacterial and antistatic effects of the release paper, but also enhances its aging resistance and UV resistance. The soaking treatment of the glassine base paper with acetic acid solution further enhances its antibacterial properties.

[0004] Nevertheless, the release paper prepared by the above method still has some shortcomings. Specifically, the antibacterial and antistatic functions of the release paper are mainly concentrated in the release layer, while the base paper layer does not have these functions, which leads to limited overall antibacterial and antistatic effects of the release paper. Summary of the invention

[0005] In view of the technical defects existing in the background technology, the present invention proposes a method for preparing antibacterial and antistatic release paper, which solves the above technical problems and meets the actual needs. The specific technical scheme is as follows: 1. A method for preparing an antibacterial and antistatic release paper, comprising the following steps: S1. Prepare base paper; S11. The plant material is put into a pulper for beating to obtain a plant pulp with a concentration of 4.0% to 5.5%, and the beating is performed to 39 to 41°SR, the plant pulp after beating is transferred to a pulp tank, 7.0% to 9.0% of calcium carbonate based on the dry weight of the plant pulp is first added, and then an antibacterial and antistatic filler is added, and a stirring device in the pulp tank is used to mix at a speed of 200 to 300 rpm for 10 to 15 minutes to obtain a mixed pulp; S12. adding water to the mixed pulp and diluting the mixed pulp concentration to 1.1% to 1.5%, heating the diluted mixed pulp to 60°C to 65°C, and using a fourdrinier paper machine to form the diluted pulp to obtain a wet paper web; S13. The formed wet paper web is dehydrated by suction under a vacuum condition of 0.09Mpa to 0.1Mpa, and then dried at a temperature of 80°C to 90°C for 8 to 10 minutes, and finally calendered on a calender to obtain base paper; S2. Coating a layer of polyethylene on the surface of the base paper and curing at room temperature for 24 hours to cure the polyethylene and form a coating layer on the surface of the base paper; S3. The release agent and the antibacterial antistatic filler are mixed uniformly in a weight ratio of (50 to 100): 1 to obtain a mixed release agent, and then the mixed release agent is coated on the surface of the coating layer, and an external light is used to cure and form a release layer to obtain an antibacterial antistatic release paper; The antibacterial and antistatic filler is a mixture of antibacterial particles and carbon nanotubes, and the antibacterial particles are nano zinc oxide particles with quaternary ammonium salt antibacterial agents loaded on the surface.

[0006] As a further technical solution of the present invention, the preparation method of the antibacterial and antistatic filler is as follows: zinc oxide particles with a particle size of 50 to 100 nm are added to a mixed alcohol solution of γ-methacryloxypropyltrimethoxysilane and 3-aminopropyltriethoxysilane for reaction to obtain modified zinc oxide particles, 2,3-epoxypropyltrimethylammonium chloride is dissolved in deionized water to obtain a quaternary ammonium salt antibacterial solution, the modified zinc oxide particles are reacted with the quaternary ammonium salt antibacterial solution to obtain antibacterial particles, and carbon nanotubes and antibacterial particles are uniformly mixed in a weight ratio of 1: (10 to 20) to obtain an antibacterial and antistatic filler.

[0007] As a further technical solution of the present invention, 1.0 g of γ-methacryloxypropyltrimethoxysilane and 1.0 g of 3-aminopropyltriethoxysilane are mixed evenly and put into a container, and then 90 mL of ethanol and 10 mL of deionized water are added in sequence, and stirred and dissolved using a stirring device, and then 2 g of nano zinc oxide particles are added, stirred and reacted for 30 minutes, and then filtered, and washed with 500 mL of deionized water and 500 mL of anhydrous ethanol in sequence, and dried to obtain modified zinc oxide particles.

[0008] As a further technical solution of the present invention, 5.0 g of modified zinc oxide particles are added to 50 mL of ethanol solution, and then 1.0 mol / L sodium hydroxide is added to adjust the pH to 8.5-10, heated to 60°C, and then 5.0 mL of 50% by mass 2,3-epoxypropyltrimethylammonium chloride solution is slowly added, the reaction is continued for 4-5 h under stirring and heating, filtered, washed, and dried to obtain antibacterial particles.

[0009] As a further technical solution of the present invention, in step S11, the plant material is at least one of hardwood pulp and softwood pulp, and the mass percentage of the antibacterial and antistatic filler in the plant pulp is 1.0% to 3.0%.

[0010] As a further technical solution of the present invention, in step S2, the dry coating weight of the polyethylene is 0.7-0.8 gsm.

[0011] As a further technical solution of the present invention, in step S3, 40 parts of branched vinyl silicone oil, 90 parts of acrylic resin emulsion and 1 part of photoinitiator are mixed evenly to obtain a release agent, and the release agent and antibacterial and antistatic filler are mixed evenly in a weight ratio of (50-100):1 to obtain a mixed release agent, and benzophenone is used as the photoinitiator.

[0012] As a further technical solution of the present invention, the dry coating amount of the mixed release agent is 1.0 to 1.1 gsm.

[0013] The beneficial effects of the present invention are: Through a specific chemical method, the quaternary ammonium salt antibacterial agent is loaded onto the surface of nano zinc oxide particles to prepare antibacterial particles. Quaternary ammonium salts have broad-spectrum antibacterial properties and can effectively kill or inhibit the growth of microorganisms such as bacteria and molds, so that the final antibacterial and antistatic release paper has excellent antibacterial properties. The added carbon nanotubes have good electrical conductivity and are mixed with antibacterial particles to form antibacterial and antistatic fillers, which can effectively reduce the surface resistance of the release paper, improve its antistatic properties, and prevent various problems caused by static electricity accumulation and discharge. By adding antibacterial and antistatic fillers to the base paper and the release layer, the release paper not only has excellent antibacterial and antistatic properties, but also maintains good release properties. DETAILED DESCRIPTION

[0014] The implementation mode of the present invention is described below in conjunction with relevant embodiments. The implementation mode of the present invention is not limited to the following embodiments, and the present invention relates to relevant necessary components in the technical field, which should be regarded as the known technology in the technical field and can be known and mastered by the technical personnel in the technical field.

[0015] A method for preparing an antibacterial and antistatic release paper comprises the following steps: S1. Prepare base paper; S11. The plant material is put into a pulper for beating to obtain a plant pulp with a concentration of 4.0% to 5.5%, and the beating is performed to 39 to 41°SR, the plant pulp after beating is transferred to a pulp tank, 7.0% to 9.0% of calcium carbonate based on the dry weight of the plant pulp is first added, and then an antibacterial and antistatic filler is added, and a stirring device in the pulp tank is used to mix at a speed of 200 to 300 rpm for 10 to 15 minutes to obtain a mixed pulp; S12. adding water to the mixed pulp and diluting the mixed pulp concentration to 1.1% to 1.5%, heating the diluted mixed pulp to 60°C to 65°C, and using a fourdrinier paper machine to form the diluted pulp to obtain a wet paper web; S13. The formed wet paper web is dehydrated by suction under a vacuum condition of 0.09Mpa to 0.1Mpa, and then dried at a temperature of 80°C to 90°C for 8 to 10 minutes, and finally calendered on a calender to obtain base paper; S2. Coating a layer of polyethylene on the surface of the base paper and curing at room temperature for 24 hours to cure the polyethylene and form a coating layer on the surface of the base paper; S3. The release agent and the antibacterial antistatic filler are mixed uniformly in a weight ratio of (50 to 100): 1 to obtain a mixed release agent, and then the mixed release agent is coated on the surface of the coating layer, and an external light is used to cure and form a release layer to obtain an antibacterial antistatic release paper; The antibacterial and antistatic filler is a mixture of antibacterial particles and carbon nanotubes, and the antibacterial particles are nano zinc oxide particles with quaternary ammonium salt antibacterial agents loaded on the surface.

[0016] The antibacterial principle of the present invention mainly relies on the prepared antibacterial particles, which are composed of nano zinc oxide with quaternary ammonium salt antibacterial agent loaded on the surface. Quaternary ammonium salt is a kind of broad-spectrum antibacterial agent. In the present invention, the quaternary ammonium salt is firmly loaded on the surface of the nano zinc oxide particles through chemical reaction.

[0017] Specifically, the antibacterial effect is enhanced by loading quaternary ammonium antibacterial agents on the surface of nano zinc oxide. Quaternary ammonium salts kill bacteria by destroying the integrity of bacterial cell membranes, causing leakage of cell contents. The cationic properties of quaternary ammonium salts enable them to be electrostatically adsorbed to the bacterial surface, further enhancing the antibacterial effect. Zinc oxide particles are modified using γ-methacryloxypropyltrimethoxysilane and 3-aminopropyltriethoxysilane, and amino and vinyl groups are introduced to facilitate the binding of quaternary ammonium salts, which are firmly connected to zinc oxide particles. The antibacterial particles prepared in this way not only retain the antibacterial properties of nano zinc oxide itself, but also enhance its antibacterial effect through the introduction of quaternary ammonium salts.

[0018] When these antibacterial particles are added to release paper, they can continuously release quaternary ammonium ions, which can come into contact with bacteria and destroy their cell structure, thereby achieving the antibacterial purpose.

[0019] The antistatic principle of the present invention mainly relies on the added carbon nanotubes. Carbon nanotubes have good electrical properties and are widely used as antistatic materials. Zinc oxide also has a certain conductive effect. In the present invention, carbon nanotubes are mixed with antibacterial particles to form antibacterial antistatic fillers, and are added to the base paper layer and release layer of the release paper. When static electricity is generated on the surface of the release paper, the carbon nanotubes can provide a conductive channel so that the static electricity can be quickly conducted away. The carbon nanotubes have good electron transmission properties and can form a conductive network inside the release paper, thereby reducing the surface resistance of the release paper. In addition, since the carbon nanotubes are evenly dispersed in the release paper, they can provide stable antistatic properties.

[0020] As one of the preferred embodiments of the present invention, the preparation method of the antibacterial and antistatic filler is: adding zinc oxide particles with a particle size of 50 to 100 nm to a mixed alcohol solution of γ-methacryloxypropyltrimethoxysilane and 3-aminopropyltriethoxysilane to react to obtain modified zinc oxide particles, dissolving 2,3-epoxypropyltrimethylammonium chloride in deionized water to obtain a quaternary ammonium salt antibacterial solution, reacting the modified zinc oxide particles with the quaternary ammonium salt antibacterial solution to obtain antibacterial particles, and uniformly mixing carbon nanotubes and antibacterial particles in a weight ratio of 1: (10 to 20) to obtain an antibacterial and antistatic filler.

[0021] In the present invention, the quaternary ammonium salt is firmly loaded on the surface of the nano zinc oxide particles through a chemical reaction. Specifically, the surface of the nano zinc oxide particles is first modified by using γ-methacryloxypropyltrimethoxysilane and 3-aminopropyltriethoxysilane to introduce amino and vinyl functional groups, which provide active sites for subsequent reactions with the quaternary ammonium salt. Then, the modified zinc oxide particles are reacted with 2,3-epoxypropyltrimethylammonium chloride, and the quaternary ammonium salt is firmly connected to the zinc oxide particles through a ring-opening addition reaction between the amino group and the epoxypropyl group, thereby obtaining antibacterial particles. The antibacterial particles are then mixed with carbon nanotubes to obtain antibacterial and antistatic fillers. Furthermore, the carbon nanotubes and the antibacterial particles are uniformly mixed in a weight ratio of 1:10 to obtain an antibacterial and antistatic filler.

[0022] As one of the preferred embodiments of the present invention, 1.0 g of γ-methacryloxypropyltrimethoxysilane and 1.0 g of 3-aminopropyltriethoxysilane are mixed evenly and put into a container, and then 90 mL of ethanol and 10 mL of deionized water are added in sequence, and the mixture is stirred and dissolved using a stirring device, and then 2 g of nano zinc oxide particles are added, stirred and reacted for 30 minutes, and then filtered, and washed with 500 mL of deionized water and 500 mL of anhydrous ethanol in sequence, and dried to obtain modified zinc oxide particles.

[0023] γ-methacryloxypropyltrimethoxysilane and 3-aminopropyltriethoxysilane are mixed evenly, and then ethanol and deionized water are added as solvents to fully dissolve and disperse these compounds. Nano zinc oxide particles are added to the above solution. At this time, the silane groups contained in γ-methacryloxypropyltrimethoxysilane and 3-aminopropyltriethoxysilane can react with the hydroxyl groups on the surface of zinc oxide to form chemical bonds, thereby connecting the silane to the surface of the zinc oxide particles. In this process, the amino group and methacryloyloxy group of the silane are also introduced into the surface of the zinc oxide particles, providing active sites for subsequent reactions.

[0024] As one of the preferred embodiments of the present invention, 5.0 g of modified zinc oxide particles are added to 50 mL of ethanol solution, and then 1.0 mol / L sodium hydroxide is added to adjust the pH to 8.5-10, heated to 60°C, and then 5.0 mL of 50% by mass 2,3-epoxypropyltrimethylammonium chloride solution is slowly added, and the reaction is continued for 4-5 h under stirring and heating, filtered, washed, and dried to obtain antibacterial particles.

[0025] After obtaining the modified zinc oxide particles, they are added to an ethanol solution, and the pH value of the solution is adjusted to 8.5-10 by adding sodium hydroxide. Alkaline conditions are conducive to the subsequent quaternary ammonium salt loading reaction. Then, a 50% mass fraction of 2,3-epoxypropyltrimethylammonium chloride solution is slowly added. Under heating and stirring conditions, the epoxypropyl group in the 2,3-epoxypropyltrimethylammonium chloride will undergo a ring-opening addition reaction with the amino group on the surface of the modified zinc oxide particles, so that the quaternary ammonium salt antibacterial agent is loaded on the surface of the modified zinc oxide particles.

[0026] As one of the preferred embodiments of the present invention, in step S11, the plant material is at least one of hardwood pulp and softwood pulp, and the mass percentage of the antibacterial and antistatic filler in the plant pulp is 1.0% to 3.0%.

[0027] Specifically, in step S11, the plant material is synthesized from hardwood pulp and softwood pulp, the hardwood pulp and softwood pulp are added to a pulper in a ratio of 1:1 for pulping, and then 7% calcium carbonate and 1% antibacterial and antistatic filler are added, and then mixed evenly again to obtain a mixed pulp. The hardwood pulp and softwood pulp are mixed in a ratio of 1:1, which helps to improve the strength and toughness of the paper as well as the softness of the paper.

[0028] As one of the preferred embodiments of the present invention, in step S2, the dry coating weight of the polyethylene is 0.7-0.8 gsm.

[0029] Specifically, the dry coating weight of polyethylene is preferably 0.8 gsm.

[0030] When coating polyethylene, pour the prepared PE glue solution into the material trough of the coating machine, start the coating machine, send the base paper into the coating area, and evenly coat the PE glue solution on the surface of the base paper. By controlling the speed of the coating machine, ensure that the dry coating amount of PE glue reaches 0.8gsm. After coating, send the base paper coated with PE glue to the room temperature curing area for curing. The curing time is usually 24 hours to ensure that the PE glue layer is fully cured and forms a stable coating layer.

[0031] As one of the preferred embodiments of the present invention, in step S3, 40 parts of branched vinyl silicone oil, 90 parts of acrylic resin emulsion and 1 part of photoinitiator are mixed evenly to obtain a release agent, and the release agent and antibacterial and antistatic filler are mixed evenly in a weight ratio of (50-100):1 to obtain a mixed release agent, and the photoinitiator is benzophenone.

[0032] Specifically, the release agent and the antibacterial and antistatic filler are mixed in a ratio of 100:1.

[0033] Furthermore, the dry coating amount of the mixed release agent is 1.1 gsm.

[0034] After the mixed release agent is applied to the surface of the coating layer, it is cured by external light. During this process, benzophenone absorbs light energy under light and can trigger a chain polymerization reaction of the carbon-carbon double bonds in the branched vinyl silicone oil and acrylic resin emulsion. The surface of the antibacterial particles has been modified and vinyl groups have been introduced. During the photopolymerization process, these vinyl groups can undergo mutual addition reactions with the carbon-carbon double bonds in the branched vinyl silicone oil and acrylic resin emulsion. This addition reaction not only enhances the degree of cross-linking between polymer chains, but also forms a strong chemical bond between the antibacterial particles and the polymer matrix.

[0035] As the photopolymerization reaction proceeds, the branched vinyl silicone oil, acrylic resin emulsion, antibacterial particles and carbon nanotubes gradually form a dense, cross-linked polymer network structure, and solidify the release layer, thereby playing a release role. At the same time, due to the uniform distribution and firm bonding of the antibacterial particles and carbon nanotubes, the release layer also has good antibacterial and antistatic properties.

[0036] Example 1 Preparation of antibacterial and antistatic release paper: S1. Prepare base paper; S11. The plant material is placed in a pulper for beating to obtain plant pulp, and a plant pulp having a concentration of 4.0% to 5.5% is obtained, and the plant pulp is beaten to 39 to 41°SR, and the plant pulp is transferred to a pulp tank, and 7.0% calcium carbonate and 1.0% antibacterial and antistatic filler are added to the plant pulp and mixed evenly to obtain a mixed pulp; S12. adding water to the mixed pulp and diluting the mixed pulp concentration to 1.1% to 1.5%, heating the diluted mixed pulp to 60°C to 65°C, and using a fourdrinier paper machine to form the diluted pulp to obtain a wet paper web; S13. The formed wet paper web is dehydrated by suction under a vacuum condition of 0.09Mpa to 0.1Mpa, and then dried at a temperature of 80°C to 90°C for 8 to 10 minutes, and finally calendered on a calender to obtain base paper; S2. A layer of polyethylene is coated on the surface of the base paper and cured at room temperature for 24 hours to allow the polyethylene to solidify and form a coating layer on the surface of the base paper. The dry weight of the polyethylene coating is 0.8 gsm.

[0037] S3. The release agent and the antibacterial and antistatic filler are uniformly mixed in a weight ratio of 100:1 to obtain a mixed release agent, and then the mixed release agent is coated on the surface of the coating layer. The coating dry weight of the mixed release agent is 1.1 gsm. An external lamp is used to cure and form a release layer to obtain an antibacterial and antistatic release paper.

[0038] Preparation of antibacterial and antistatic fillers: 1.0 g of γ-methacryloxypropyltrimethoxysilane and 1.0 g of 3-aminopropyltriethoxysilane were mixed and put into a container, and then 90 mL of ethanol and 10 mL of deionized water were added in turn, and the mixture was stirred and dissolved using a stirring device. Then 2 g of nano zinc oxide particles were added, stirred and reacted for 30 minutes, and then filtered, washed with 500 mL of deionized water and 500 mL of anhydrous ethanol in turn, and dried to obtain modified zinc oxide particles. 5.0 g of modified zinc oxide particles were added to 50 mL of ethanol solution, and then 1.0 mol / L sodium hydroxide was added to adjust the pH to 8.5-10, heated to 60°C, and then 5.0 mL of 50% by mass 2,3-epoxypropyltrimethylammonium chloride solution was slowly added, and the reaction was continued for 4-5 hours under stirring and heating conditions. The mixture was filtered, washed, and dried to obtain antibacterial particles. The carbon nanotubes and antibacterial particles were evenly mixed in a weight ratio of 1:10 to obtain antibacterial and antistatic fillers.

[0039] Comparative Example 1 The difference between Comparative Example 1 and Example 1 is that when preparing the release paper, no antibacterial and antistatic filler is added in Comparative Example 1, and the remaining steps are the same as those in Example 1.

[0040] Comparative Example 2, The difference between Comparative Example 2 and Example 1 is that when preparing the release paper, the antibacterial and antistatic filler added in Comparative Example 2 is replaced by an equal amount of antibacterial particles, and the remaining steps are the same as those in Example 1.

[0041] Comparative Example 3 The difference between Comparative Example 3 and Example 1 is that when preparing the release paper, the antibacterial and antistatic filler added in Comparative Example 3 is replaced by an equal amount of carbon nanotubes, and the remaining steps are the same as those in Example 1.

[0042] The surface resistance test and antibacterial test were performed on the above-mentioned Example 1 and Comparative Examples 1 to 3, and the test results are as follows:

[0043] Evaluation of antibacterial performance: The antibacterial and antistatic release paper in Example 1 showed high antibacterial rates against Escherichia coli and Staphylococcus aureus, which were 96.1% and 98.4%, respectively. This proves that the added antibacterial and antistatic filler has a significant antibacterial effect. In Comparative Example 1, no antibacterial and antistatic filler was added, so its antibacterial rates against Escherichia coli and Staphylococcus aureus were both 0%, indicating no antibacterial performance. In Comparative Example 2, only antibacterial particles were used as fillers, and its antibacterial rates against Escherichia coli and Staphylococcus aureus reached 99.9%, which was higher than that in Example 1. However, considering that the filler in Example 1 also contained carbon nanotubes with antistatic properties, Example 1 had antistatic function while maintaining high antibacterial performance. In Comparative Example 3, only carbon nanotubes were used as fillers, and its antibacterial rates were relatively low, which were 65.7% and 69.3%, respectively. This shows that although zinc oxide has antistatic properties, its antibacterial performance is not as good as that of antibacterial particles.

[0044] Evaluation of antistatic performance: The surface resistance of the base paper layer and the release layer in Example 1 were both low, 1.4×10 6 Ω, indicating that it has good antistatic properties. This is mainly because the filler contains carbon nanotubes with excellent conductive properties. In Comparative Example 1, no antibacterial and antistatic filler is added, so the surface resistance of the base paper layer and the release layer is relatively high, which are 7.3×10 11 Ω, indicating that its antistatic performance is poor. Although antibacterial particles are used in Comparative Example 2, since carbon nanotubes are not included, the surface resistance of the base paper layer and the release layer are higher than that of Example 1, which are 8.1×10 9 Ω, indicating that its antistatic performance is not as good as that of Example 1. In Comparative Example 3, only carbon nanotubes were used as fillers, and the surface resistance of the base paper layer was lower (3.9×10 5 Ω), but still lower than that of Comparative Example 1 without any filler added.

[0045] In summary, the antibacterial and antistatic release paper in Example 1 has good antistatic properties while maintaining high antibacterial properties, which is mainly due to the fact that the filler contains both modified zinc oxide particles with antibacterial properties and carbon nanotubes with antistatic properties.

[0046] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for preparing an antibacterial and antistatic release paper, characterized in that: The following steps are involved: S1. Prepare base paper; S11. The plant material is put into a pulper for beating to obtain a plant pulp with a concentration of 4.0% to 5.5%, and the beating is performed to 39 to 41°SR, the plant pulp after beating is transferred to a pulp tank, 7.0% to 9.0% of calcium carbonate based on the dry weight of the plant pulp is first added, and then an antibacterial and antistatic filler is added, and a stirring device in the pulp tank is used to mix at a speed of 200 to 300 rpm for 10 to 15 minutes to obtain a mixed pulp; S12. adding water to the mixed pulp and diluting the mixed pulp concentration to 1.1% to 1.5%, heating the diluted mixed pulp to 60°C to 65°C, and using a fourdrinier paper machine to form the diluted pulp to obtain a wet paper web; S13. The formed wet paper web is dehydrated by suction under a vacuum condition of 0.09Mpa to 0.1Mpa, and then dried at a temperature of 80°C to 90°C for 8min to 10min, and finally calendered on a calender to obtain base paper; S2. Coating a layer of polyethylene on the surface of the base paper and curing at room temperature for 24 hours to cure the polyethylene and form a coating layer on the surface of the base paper; S3. The release agent and the antibacterial antistatic filler are mixed uniformly in a weight ratio of (50 to 100): 1 to obtain a mixed release agent, and then the mixed release agent is coated on the surface of the coating layer, and an external light is used to cure and form a release layer to obtain an antibacterial antistatic release paper; The antibacterial and antistatic filler is a mixture of antibacterial particles and carbon nanotubes, and the antibacterial particles are nano zinc oxide particles with quaternary ammonium salt antibacterial agents loaded on the surface.

2. The method for preparing the antibacterial and antistatic release paper according to claim 1, characterized in that: The preparation method of the antibacterial and antistatic filler comprises the following steps: adding zinc oxide particles with a particle size of 50 to 100 nm to a mixed alcohol solution of γ-methacryloxypropyltrimethoxysilane and 3-aminopropyltriethoxysilane for reaction to obtain modified zinc oxide particles; dissolving 2,3-epoxypropyltrimethylammonium chloride in deionized water to obtain a quaternary ammonium salt antibacterial solution; reacting the modified zinc oxide particles with the quaternary ammonium salt antibacterial solution to obtain antibacterial particles; and uniformly mixing carbon nanotubes and the antibacterial particles at a weight ratio of 1:(10 to 20) to obtain the antibacterial and antistatic filler.

3. The method for preparing the antibacterial and antistatic release paper according to claim 2, characterized in that: 1.0 g of γ-methacryloxypropyltrimethoxysilane and 1.0 g of 3-aminopropyltriethoxysilane were mixed evenly and put into a container, and then 90 mL of ethanol and 10 mL of deionized water were added in sequence, and the mixture was stirred and dissolved using a stirring device. Then 2 g of nano zinc oxide particles were added, stirred and reacted for 30 minutes, and then filtered, and washed with 500 mL of deionized water and 500 mL of anhydrous ethanol in sequence, and dried to obtain modified zinc oxide particles.

4. The method for preparing the antibacterial and antistatic release paper according to claim 3, characterized in that: Add 5.0 g of modified zinc oxide particles to 50 mL of ethanol solution, then add 1.0 mol / L sodium hydroxide to adjust the pH to 8.5-10, heat to 60°C, and then slowly add 5.0 mL of 50% by mass 2,3-epoxypropyltrimethylammonium chloride solution, continue the reaction for 4 h to 5 h under stirring and heating, filter, wash, and dry to obtain antibacterial particles.

5. The method for preparing the antibacterial and antistatic release paper according to claim 1, characterized in that: In step S11, the plant material is at least one of hardwood pulp and softwood pulp, and the mass percentage of the antibacterial and antistatic filler in the plant pulp is 1.0% to 3.0%.

6. The method for preparing the antibacterial and antistatic release paper according to claim 1, characterized in that: In step S2, the dry coating weight of the polyethylene is 0.7-0.8 gsm.

7. The method for preparing the antibacterial and antistatic release paper according to claim 1, characterized in that: In step S3, 40 parts of branched vinyl silicone oil, 90 parts of acrylic resin emulsion, and 1 part of photoinitiator are mixed evenly to obtain a release agent, and the release agent and antibacterial and antistatic filler are mixed evenly in a weight ratio of (50-100):1 to obtain a mixed release agent, and the photoinitiator is benzophenone.

8. The method for preparing the antibacterial and antistatic release paper according to claim 1, characterized in that: The dry coating amount of the mixed release agent is 1.0 to 1.1 gsm.

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