CN113668273B - Antistatic process for carton - Google Patents
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- CN113668273B CN113668273B CN202111038635.7A CN202111038635A CN113668273B CN 113668273 B CN113668273 B CN 113668273B CN 202111038635 A CN202111038635 A CN 202111038635A CN 113668273 B CN113668273 B CN 113668273B
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
- D21B1/32—Defibrating by other means of waste paper
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
- D21B1/34—Kneading or mixing; Pulpers
- D21B1/345—Pulpers
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D1/00—Methods of beating or refining; Beaters of the Hollander type
- D21D1/02—Methods of beating; Beaters of the Hollander type
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D1/00—Methods of beating or refining; Beaters of the Hollander type
- D21D1/20—Methods of refining
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
- D21D5/02—Straining or screening the pulp
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/14—Secondary fibres
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/36—Inorganic fibres or flakes
- D21H13/46—Non-siliceous fibres, e.g. from metal oxides
- D21H13/50—Carbon fibres
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/675—Oxides, hydroxides or carbonates
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
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- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Laminated Bodies (AREA)
Abstract
The invention provides an antistatic process for a carton, which comprises the steps of carrying out antistatic treatment in the paper pulp processing process to obtain antistatic paper pulp, then making the antistatic paper pulp into kraft paper, processing the kraft paper into corrugated boards by using a corrugating machine, then carrying out die cutting on the corrugated boards according to the unfolded shape of the carton to obtain unfolded boards of the corrugated carton, and finally gluing corresponding edges of the unfolded boards of the corrugated carton and bonding the corresponding edges together to obtain the carton. The invention has simple process, obtains better antistatic effect by the antistatic treatment of the paper pulp, and also ensures the mechanical property of the carton.
Description
Technical Field
The invention belongs to the technical field of carton processing, and particularly relates to an antistatic process for a carton.
Background
With the development of technology, electronic products are more and more popular, and static electricity generated during the circulation and transportation of electronic products is one of the main causes of damage of electronic products during the circulation and transportation. Electronic products are usually packaged and transported by using cartons, the common cartons have no antistatic function, and the performance of the electronic products, even electric sparks possibly generated by trace static electricity hidden in the cartons, is generated by the trace static electricity hidden in the cartons, so that fire disasters are caused. Therefore, it is very necessary to improve the antistatic property of the carton.
At present, the antistatic treatment methods for the cartons comprise the following two methods: firstly, coating carbon powder, laminating aluminum foil, antistatic coating and the like on the surface of a carton; secondly, conductive materials such as metal fiber, carbon fiber and the like are added in the production process of the carton. Wherein the surface coating method is easy to deteriorate and even lose the antistatic effect due to collision or long-term use. The second method has a relatively more stable antistatic effect.
Patent application CN109808279A discloses an electronic product packaging carton material, including the waterproof antistatic thin layer, first cardboard layer, thermal-insulated antistatic layer, second cardboard layer, the antistatic coating that stack gradually the setting, wherein set up three antistatic layer, the technology is loaded down with trivial details, also can't avoid the technical problem that the antistatic effect variation that the top layer drops and leads to moreover.
Disclosure of Invention
The invention aims to provide an antistatic process for a carton, which is simple in process and good in antistatic effect.
In order to achieve the purpose, the invention is realized by the following scheme:
an antistatic process for a carton, wherein antistatic treatment is carried out in the paper pulp processing process, so as to prepare the carton; the specific method of antistatic treatment is as follows:
(1) firstly, a waste corrugated case is pulped by a hydrapulper, slag is removed, fine grinding is carried out, white water is diluted and pulped to obtain fiber refined pulp with the mass concentration of 4-5%, and partial epoxidation treatment is carried out to obtain partial epoxy modified fiber refined pulp;
(2) then, taking the spiral carbon nanofibers and the nano zinc oxide whiskers as raw materials to obtain a composite nanomaterial, mixing the composite nanomaterial with acrylamide, and carrying out polymerization reaction to obtain a modified composite nanomaterial;
(3) and finally, adding the modified composite nano material into part of the epoxy modified fiber fine pulp, and reacting to obtain the antistatic paper pulp.
Preferably, in the step (1), the specific method of the partial epoxidation treatment is as follows: firstly, adding 2-3 parts of sodium hydroxide into 100 parts of fiber fine pulp at the temperature of-5 to-10 ℃, stirring until the sodium hydroxide is completely dissolved, then adding 0.02-0.04 part of epoxy chloropropane, and stirring and reacting for 80-100 minutes at the temperature of 55-65 ℃ to obtain partial epoxy modified fiber fine pulp.
Preferably, in the step (2), the spiral nano carbon fiber is prepared by a chemical vapor deposition method: acetylene is used as a carbon source, a titanium plate is used as a catalyst, phosphorus trichloride is used as a main catalyst, the temperature is 680-700 ℃, the argon flow is 45-50 mL/min, the acetylene flow is 18-20 mL/min, the hydrogen flow is 60-65 mL/min, and the phosphorus trichloride flow is 0.01-0.02 mL/min.
Preferably, in the step (2), the preparation method of the composite nano material comprises the following steps:
(A) adding 1 part of spiral carbon nanofibers into 7-9 parts of concentrated nitric acid with the mass concentration of 75-85%, stirring and treating for 8-10 hours at 130-140 ℃, performing suction filtration, washing to be neutral, performing vacuum drying to obtain acidified spiral carbon nanofibers, adding 8-10 parts of ethylene glycol chelating type titanate coupling agent (WB-311, purchased from Nanjing Yitiantai chemical engineering science and technology Limited) isopropanol solution with the mass concentration of 5-8%, stirring and refluxing for 2-3 hours under the nitrogen atmosphere, washing, and drying to obtain activated spiral carbon nanofibers;
(B) then adding 0.3-0.5 part of nano zinc oxide whisker into 2-3 parts of 5-8% tetraisopropyl di (dioctyl phosphate acyloxy) titanate isopropanol solution by mass concentration, stirring and refluxing for 2-3 hours under nitrogen atmosphere, washing, and drying to obtain activated nano zinc oxide whisker;
(C) and (3) finally, dispersing the activated nano zinc oxide whiskers obtained in the step (B) in 5-7 parts of acetone by ultrasonic waves, then adding the activated spiral nano carbon fibers obtained in the step (A), stirring and reacting at 75-85 ℃ for 22-24 hours, centrifuging, washing and drying to obtain the composite nano material.
Preferably, in the step (2), the nano zinc oxide whisker accounts for 99.9 percent by weight, has an average particle size of 20-30 nm, a length of 10 microns and a specific surface area of 30m 2 /g。
Preferably, in the step (2), the polymerization reaction is specifically carried out by the following steps in parts by weight: adding 1 part of polysorbate-80 into 80-90 parts of water, stirring until the polysorbate-80 is completely dissolved, adding 1-2 parts of composite nano material and 0.2-0.3 part of acrylamide, uniformly dispersing by ultrasonic waves, adding 0.01-0.02 part of ammonium persulfate, stirring and reacting at 75-85 ℃ for 3-5 hours under the atmosphere of nitrogen, centrifuging, washing, and drying to obtain the modified composite nano material.
Preferably, the specific method of step (3) is as follows, in parts by weight: adding 1 part of modified composite nano material and 0.2-0.3 part of sodium hydroxide into 120-130 parts of partial epoxy modified fiber fine pulp, uniformly dispersing by ultrasonic waves, reacting at 80-90 ℃ for 10-12 hours in a nitrogen atmosphere, and naturally cooling to room temperature.
Preferably, the method for making the carton is as follows: manufacturing antistatic paper pulp into kraft paper, processing the kraft paper into corrugated boards by using a corrugating machine, then carrying out die cutting on the corrugated boards according to the unfolded shape of the carton to obtain unfolded boards of the corrugated carton, and finally gluing corresponding edges of the unfolded boards of the corrugated carton and bonding the unfolded boards together to obtain the carton.
More preferably, the specific process of papermaking is as follows: screening out impurities, forming wet paper sheet at the net part, dewatering at the pressing part, drying in a drying cylinder, rolling paper and cutting.
Further preferably, the kraft paper is 130-140 g/m 2 The corrugated board is 80-90 g/m 2 And the distance between the upper shoulder and the lower shoulder of the corrugated board is 2.8-3.1 cm.
Compared with the prior art, the invention has the beneficial effects that:
(1) the method comprises the steps of carrying out antistatic treatment in the paper pulp processing process to obtain antistatic paper pulp, making the antistatic paper pulp into kraft paper, processing the kraft paper into corrugated boards by using a corrugating machine, carrying out die cutting on the corrugated boards according to the unfolded shape of the carton to obtain unfolded boards of the corrugated carton, and finally gluing corresponding edges of the unfolded boards of the corrugated carton and bonding the unfolded boards together to obtain the carton. The process is simple, a good antistatic effect is obtained through antistatic treatment on paper pulp, and the mechanical property of the carton is also ensured;
the antistatic paper pulp is prepared by taking the waste corrugated case as a raw material, so that the recycling of waste is realized, and the environment is protected. According to the invention, part of epoxy of the fiber fine pulp is modified, epoxy groups are introduced, and the epoxy groups react with amino groups in the modified composite nano material, so that the modified composite nano material is combined with fibers in a chemical bond form, the falling off is avoided, and the antistatic effect and the mechanical property are ensured.
(2) The technical key of the antistatic effect and the mechanical property of the invention lies in the modified composite nano material, and the preparation method thereof is as follows: firstly, taking spiral carbon nanofiber and nano zinc oxide whiskers as raw materials to obtain a composite nanomaterial, then mixing the composite nanomaterial with acrylamide, and carrying out polymerization reaction to obtain the composite nanomaterial. The spiral carbon nanofibers and the nano zinc oxide whiskers have good electrical conductivity, and the nano zinc oxide whiskers are deposited on the surfaces of the spiral carbon nanofibers, so that the specific surface area is large, the contact area with fibers and the like is increased, and the current conduction is facilitated, so that the antistatic effect is improved; meanwhile, the nanometer size plays a role in enhancing, so that the mechanical property is improved. The subsequent formation of polyacrylamide is accompanied with the formation of hydrogen bonds between polyacrylamide and fibers, so that a net structure is constructed, and the antistatic effect and the mechanical property are further improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The method for making the carton is as follows: manufacturing antistatic paper pulp into kraft paper, processing the kraft paper into corrugated boards by using a corrugating machine, then carrying out die cutting on the corrugated boards according to the unfolded shape of the carton to obtain unfolded boards of the corrugated carton, and finally gluing corresponding edges of the unfolded boards of the corrugated carton and bonding the unfolded boards together to obtain the carton.
The specific process of papermaking is as follows: screening out impurities, forming wet paper sheet on the net part, dewatering in a squeezing part, drying in a drying cylinder, rolling paper and cutting.
The kraft paper is 130g/m 2 The corrugated board is 90g/m 2 And the distance between the upper shoulder and the lower shoulder of the corrugated board is 2.8 cm.
The preparation method of the antistatic paper pulp comprises the following steps:
(1) firstly, a waste corrugated case is pulped by a hydrapulper, slag is removed, fine grinding and white water dilution pulping are carried out, fiber fine pulp with the mass concentration of 5% is obtained, and partial epoxidation treatment is carried out, so that partial epoxy modified fiber fine pulp is obtained;
(2) then, taking the spiral carbon nanofibers and the nano zinc oxide whiskers as raw materials to obtain a composite nanomaterial, mixing the composite nanomaterial with acrylamide, and carrying out polymerization reaction to obtain a modified composite nanomaterial;
(3) and finally, adding the modified composite nano material into part of the epoxy modified fiber fine pulp, and reacting to obtain the antistatic paper pulp.
In the step (1), the specific method of the partial epoxidation treatment is as follows: firstly, adding 2kg of sodium hydroxide into 100kg of fiber fine pulp at the temperature of minus 10 ℃, stirring until the sodium hydroxide is completely dissolved, then adding 0.04kg of epoxy chloropropane, and stirring and reacting for 100 minutes at the temperature of 55 ℃ to obtain partial epoxy modified fiber fine pulp.
In the step (2), the spiral carbon nanofibers are prepared by a chemical vapor growth method: acetylene is used as a carbon source, a titanium plate is used as a catalyst, phosphorus trichloride is used as a main catalyst, the temperature is 680 ℃, the argon flow is 50 mL/min, the acetylene flow is 18 mL/min, the hydrogen flow is 65 mL/min, and the phosphorus trichloride flow is 0.01 mL/min.
In the step (2), the preparation method of the composite nano material comprises the following steps:
(A) adding 1kg of spiral carbon nanofibers into 9kg of concentrated nitric acid with the mass concentration of 75%, stirring and treating for 8 hours at 140 ℃, performing suction filtration, washing to be neutral, performing vacuum drying to obtain acidified spiral carbon nanofibers, adding 10kg of ethylene glycol chelating type titanate coupling agent (WB-311, purchased from Nanjing one-piece chemical engineering and technology Co., Ltd.) with the mass concentration of 5% into isopropanol solution, stirring and refluxing for 3 hours under the nitrogen atmosphere, washing, and drying to obtain activated spiral carbon nanofibers;
(B) then adding 0.3kg of nano zinc oxide whisker into 3kg of 5% tetraisopropyl di (dioctyl phosphite acyloxy) titanate isopropanol solution with mass concentration, stirring and refluxing for 3 hours under nitrogen atmosphere, washing and drying to obtain activated nano zinc oxide whisker;
(C) and (3) finally, ultrasonically dispersing the activated nano zinc oxide whisker obtained in the step (B) in 5kg of acetone, then adding the activated spiral nano carbon fiber obtained in the step (A), stirring and reacting for 22 hours at 85 ℃, centrifuging, washing and drying to obtain the composite nano material.
In the step (2), the nano zinc oxide whisker accounts for 99.9 percent of the total weight, has an average particle size of 30nm, a length of 10 mu m and a specific surface area of 30m 2 /g。
In the step (2), the polymerization reaction is specifically carried out by the following method: adding 1kg of polysorbate-80 into 80kg of water, stirring until the polysorbate-80 is completely dissolved, adding 2kg of composite nano material and 0.2kg of acrylamide, uniformly dispersing by ultrasonic waves, adding 0.02kg of ammonium persulfate, stirring and reacting for 5 hours at 75 ℃ in a nitrogen atmosphere, centrifuging, washing and drying to obtain the modified composite nano material.
The specific method of the step (3) is as follows: firstly, adding 1kg of modified composite nano material and 0.2kg of sodium hydroxide into 130kg of partial epoxy modified fiber fine pulp, uniformly dispersing by ultrasonic waves, reacting for 12 hours at 80 ℃ in a nitrogen atmosphere, and naturally cooling to room temperature.
Example 2
The method for making the carton is as follows: manufacturing antistatic paper pulp into kraft paper, processing the kraft paper into corrugated boards by using a corrugating machine, then carrying out die cutting on the corrugated boards according to the unfolded shape of the carton to obtain unfolded boards of the corrugated carton, and finally gluing corresponding edges of the unfolded boards of the corrugated carton and bonding the unfolded boards together to obtain the carton.
The specific process of papermaking is as follows: screening out impurities, forming wet paper sheet at the net part, dewatering at the pressing part, drying in a drying cylinder, rolling paper and cutting.
The kraft paper is 140g/m 2 The corrugated board is 80g/m 2 And the distance between the upper shoulder and the lower shoulder of the corrugated board is 3.1 cm.
The preparation method of the antistatic paper pulp comprises the following steps:
(1) firstly, a waste corrugated case is pulped by a hydrapulper, slag is removed, fine grinding and white water dilution pulping are carried out, fiber fine pulp with the mass concentration of 4% is obtained, and partial epoxidation treatment is carried out, so that partial epoxy modified fiber fine pulp is obtained;
(2) then, taking the spiral carbon nanofibers and the nano zinc oxide whiskers as raw materials to obtain a composite nanomaterial, mixing the composite nanomaterial with acrylamide, and carrying out polymerization reaction to obtain a modified composite nanomaterial;
(3) and finally, adding the modified composite nano material into part of the epoxy modified fiber fine pulp, and reacting to obtain the antistatic paper pulp.
In the step (1), the specific method of the partial epoxidation treatment is as follows: firstly, adding 3kg of sodium hydroxide into 100kg of fiber refined pulp at the temperature of-5 ℃, stirring until the sodium hydroxide is completely dissolved, then adding 0.02kg of epoxy chloropropane, and stirring and reacting for 80 minutes at the temperature of 65 ℃ to obtain partial epoxy modified fiber refined pulp.
In the step (2), the spiral carbon nanofibers are prepared by a chemical vapor growth method: acetylene is used as a carbon source, a titanium plate is used as a catalyst, phosphorus trichloride is used as a main catalyst, the temperature is 700 ℃, the argon flow is 45 mL/min, the acetylene flow is 20 mL/min, the hydrogen flow is 60 mL/min, and the phosphorus trichloride flow is 0.02 mL/min.
In the step (2), the preparation method of the composite nano material comprises the following steps:
(A) adding 1kg of spiral carbon nanofibers into 7kg of concentrated nitric acid with the mass concentration of 85%, stirring and treating for 10 hours at 130 ℃, performing suction filtration, washing to be neutral, performing vacuum drying to obtain acidified spiral carbon nanofibers, adding the acidified spiral carbon nanofibers into an isopropanol solution of 8kg of ethylene glycol chelating type titanate coupling agent (WB-311, purchased from Nanjing Tanshiki chemical technology Co., Ltd.) with the mass concentration of 8%, stirring and refluxing for 2 hours under the nitrogen atmosphere, washing, and drying to obtain activated spiral carbon nanofibers;
(B) then adding 0.5kg of nano zinc oxide whisker into 2kg of tetraisopropyl di (dioctyl phosphate acyloxy) titanate isopropanol solution with the mass concentration of 8%, stirring and refluxing for 2 hours under the nitrogen atmosphere, washing and drying to obtain activated nano zinc oxide whisker;
(C) and (4) finally, ultrasonically dispersing the activated nano zinc oxide whiskers obtained in the step (B) in 7kg of acetone, then adding the activated spiral nano carbon fibers obtained in the step (A), stirring and reacting for 24 hours at 75 ℃, centrifuging, washing and drying to obtain the composite nano material.
In the step (2), the weight content of the nano zinc oxide whisker is 99.9 percentAn average particle diameter of 20nm, a length of 10 μm, and a specific surface area of 30m 2 /g。
In the step (2), the polymerization reaction is specifically carried out by the following method: adding 1kg of polysorbate-80 into 90kg of water, stirring until the polysorbate-80 is completely dissolved, then adding 1kg of composite nano material and 0.3kg of acrylamide, uniformly dispersing by ultrasonic waves, then adding 0.01kg of ammonium persulfate, stirring and reacting for 3 hours at 85 ℃ in a nitrogen atmosphere, centrifuging, washing and drying to obtain the modified composite nano material.
The specific method of the step (3) is as follows: firstly, adding 1kg of modified composite nano material and 0.3kg of sodium hydroxide into 120kg of partial epoxy modified fiber fine pulp, uniformly dispersing by ultrasonic waves, reacting for 10 hours at 90 ℃ in a nitrogen atmosphere, and naturally cooling to room temperature.
Example 3
The method for making the carton is as follows: manufacturing antistatic paper pulp into kraft paper, processing the kraft paper into corrugated boards by using a corrugating machine, then carrying out die cutting on the corrugated boards according to the unfolded shape of the carton to obtain unfolded boards of the corrugated carton, and finally gluing corresponding edges of the unfolded boards of the corrugated carton and bonding the unfolded boards together to obtain the carton.
The specific process of papermaking is as follows: screening out impurities, forming wet paper sheet at the net part, dewatering at the pressing part, drying in a drying cylinder, rolling paper and cutting.
The craft paper is 135g/m 2 The corrugated board is 85g/m 2 And the distance between the upper shoulder and the lower shoulder of the corrugated board is 3 cm.
The preparation method of the antistatic paper pulp comprises the following steps:
(1) firstly, a waste corrugated case is pulped by a hydrapulper, slag is removed, fine grinding and white water dilution pulping are carried out, fiber fine pulp with the mass concentration of 4.5% is obtained, and partial epoxidation treatment is carried out, so that partial epoxy modified fiber fine pulp is obtained;
(2) then, taking the spiral carbon nanofibers and the nano zinc oxide whiskers as raw materials to obtain a composite nanomaterial, mixing the composite nanomaterial with acrylamide, and carrying out polymerization reaction to obtain a modified composite nanomaterial;
(3) and finally, adding the modified composite nano material into part of the epoxy modified fiber fine pulp, and reacting to obtain the antistatic paper pulp.
In the step (1), the specific method of the partial epoxidation treatment is as follows: firstly, adding 2.5kg of sodium hydroxide into 100kg of fiber refined pulp at the temperature of-8 ℃, stirring until the sodium hydroxide is completely dissolved, then adding 0.03kg of epoxy chloropropane, stirring and reacting for 90 minutes at the temperature of 60 ℃, and obtaining partial epoxy modified fiber refined pulp.
In the step (2), the spiral carbon nanofibers are prepared by a chemical vapor growth method: acetylene is used as a carbon source, a titanium plate is used as a catalyst, phosphorus trichloride is used as a main catalyst, the temperature is 690 ℃, the argon flow is 48 mL/min, the acetylene flow is 19 mL/min, the hydrogen flow is 62 mL/min, and the phosphorus trichloride flow is 0.015 mL/min.
In the step (2), the preparation method of the composite nano material comprises the following steps:
(A) adding 1kg of spiral carbon nanofibers into 8kg of concentrated nitric acid with the mass concentration of 80%, stirring and treating for 9 hours at 135 ℃, performing suction filtration, washing to be neutral, performing vacuum drying to obtain acidified spiral carbon nanofibers, adding the acidified spiral carbon nanofibers into 9kg of isopropanol solution of ethylene glycol chelating type titanate coupling agent (WB-311, purchased from Nanjing Tanshiki chemical technology Co., Ltd.) with the mass concentration of 6%, stirring and refluxing for 2.5 hours under the nitrogen atmosphere, washing, and drying to obtain activated spiral carbon nanofibers;
(B) then adding 0.4kg of nano zinc oxide whisker into 2.5kg of isopropyl di (dioctyl phosphite acyloxy) titanate isopropanol solution with the mass concentration of 7%, stirring and refluxing for 2.5 hours under the atmosphere of nitrogen, washing and drying to obtain activated nano zinc oxide whisker;
(C) and (3) finally, ultrasonically dispersing the activated nano zinc oxide whisker obtained in the step (B) in 6kg of acetone, then adding the activated spiral nano carbon fiber obtained in the step (A), stirring and reacting for 23 hours at 80 ℃, centrifuging, washing and drying to obtain the composite nano material.
In the step (2), the nano zinc oxide whisker accounts for 99.9 percent by weight, has an average particle size of 25nm, a length of 10 mu m and a specific surface area of 30m 2 /g。
In the step (2), the polymerization reaction is specifically carried out by the following method: adding 1kg of polysorbate-80 into 85kg of water, stirring until the polysorbate-80 is completely dissolved, then adding 1.5kg of composite nano material and 0.25kg of acrylamide, uniformly dispersing by ultrasonic waves, then adding 0.015kg of ammonium persulfate, stirring and reacting for 4 hours at 80 ℃ in a nitrogen atmosphere, centrifuging, washing, and drying to obtain the modified composite nano material.
The specific method of the step (3) is as follows: firstly, adding 1kg of modified composite nano material and 0.25kg of sodium hydroxide into 125kg of partial epoxy modified fiber fine pulp, uniformly dispersing by ultrasonic waves, reacting for 11 hours at 85 ℃ in a nitrogen atmosphere, and naturally cooling to room temperature.
Comparative example 1
The method for making the carton is as follows: manufacturing antistatic paper pulp into kraft paper, processing the kraft paper into corrugated boards by using a corrugating machine, then carrying out die cutting on the corrugated boards according to the unfolded shape of the carton to obtain unfolded boards of the corrugated carton, and finally gluing corresponding edges of the unfolded boards of the corrugated carton and bonding the unfolded boards together to obtain the carton.
The specific process of papermaking is as follows: screening out impurities, forming wet paper sheet on the net part, dewatering in a squeezing part, drying in a drying cylinder, rolling paper and cutting.
The craft paper is 130g/m 2 The corrugated board is 90g/m 2 And the distance between the upper shoulder and the lower shoulder of the corrugated board is 2.8 cm.
The preparation method of the antistatic paper pulp comprises the following steps:
(1) firstly, a waste corrugated case is pulped by a hydrapulper, slag is removed, fine grinding is carried out, and white water is diluted and pulped, so that fiber fine pulp with the mass concentration of 5% is obtained;
(2) then, taking the spiral carbon nanofibers and the nano zinc oxide whiskers as raw materials to obtain a composite nanomaterial, mixing the composite nanomaterial with acrylamide, and carrying out polymerization reaction to obtain a modified composite nanomaterial;
(3) and finally, adding 1kg of modified composite nano material into 130kg of fiber fine pulp, and uniformly stirring to obtain the antistatic paper pulp.
In the step (2), the spiral carbon nanofibers are prepared by a chemical vapor growth method: acetylene is used as a carbon source, a titanium plate is used as a catalyst, phosphorus trichloride is used as a main catalyst, the temperature is 680 ℃, the argon flow is 50 mL/min, the acetylene flow is 18 mL/min, the hydrogen flow is 65 mL/min, and the phosphorus trichloride flow is 0.01 mL/min.
In the step (2), the preparation method of the composite nano material comprises the following steps:
(A) adding 1kg of spiral carbon nanofibers into 9kg of concentrated nitric acid with the mass concentration of 75%, stirring and treating for 8 hours at 140 ℃, performing suction filtration, washing to be neutral, performing vacuum drying to obtain acidified spiral carbon nanofibers, adding 10kg of ethylene glycol chelating type titanate coupling agent (WB-311, purchased from Nanjing one-piece chemical engineering and technology Co., Ltd.) with the mass concentration of 5% into isopropanol solution, stirring and refluxing for 3 hours under the nitrogen atmosphere, washing, and drying to obtain activated spiral carbon nanofibers;
(B) then adding 0.3kg of nano zinc oxide whisker into 3kg of 5% tetraisopropyl di (dioctyl phosphite acyloxy) titanate isopropanol solution with mass concentration, stirring and refluxing for 3 hours under nitrogen atmosphere, washing and drying to obtain activated nano zinc oxide whisker;
(C) and (3) finally, ultrasonically dispersing the activated nano zinc oxide whisker obtained in the step (B) in 5kg of acetone, then adding the activated spiral nano carbon fiber obtained in the step (A), stirring and reacting for 22 hours at 85 ℃, centrifuging, washing and drying to obtain the composite nano material.
In the step (2), the nano zinc oxide whisker accounts for 99.9 percent of the total weight, has an average particle size of 30nm, a length of 10 mu m and a specific surface area of 30m 2 /g。
In the step (2), the polymerization reaction is specifically carried out by the following method: adding 1kg of polysorbate-80 into 80kg of water, stirring until the polysorbate-80 is completely dissolved, adding 2kg of composite nano material and 0.2kg of acrylamide, uniformly dispersing by ultrasonic waves, adding 0.02kg of ammonium persulfate, stirring and reacting for 5 hours at 75 ℃ in a nitrogen atmosphere, centrifuging, washing and drying to obtain the modified composite nano material.
Comparative example 2
The method for making the carton is as follows: manufacturing antistatic paper pulp into kraft paper, processing the kraft paper into corrugated boards by using a corrugating machine, then carrying out die cutting on the corrugated boards according to the unfolded shape of the carton to obtain unfolded boards of the corrugated carton, and finally gluing corresponding edges of the unfolded boards of the corrugated carton and bonding the unfolded boards together to obtain the carton.
The specific process of papermaking is as follows: screening out impurities, forming wet paper sheet at the net part, dewatering at the pressing part, drying in a drying cylinder, rolling paper and cutting.
The kraft paper is 130g/m 2 The corrugated board is 90g/m 2 And the distance between the upper shoulder and the lower shoulder of the corrugated board is 2.8 cm.
The preparation method of the antistatic paper pulp comprises the following steps:
(1) firstly, a waste corrugated case is pulped by a hydrapulper, slag is removed, fine grinding and white water dilution pulping are carried out, fiber fine pulp with the mass concentration of 5% is obtained, and partial epoxidation treatment is carried out, so that partial epoxy modified fiber fine pulp is obtained;
(2) then, taking the spiral nano carbon fiber and the nano zinc oxide whisker as raw materials to obtain a composite nano material;
(3) and finally, adding the composite nano material into part of the epoxy modified fiber fine pulp, and reacting to obtain the antistatic paper pulp.
In the step (1), the specific method of the partial epoxidation treatment is as follows: firstly, adding 2kg of sodium hydroxide into 100kg of fiber fine pulp at the temperature of minus 10 ℃, stirring until the sodium hydroxide is completely dissolved, then adding 0.04kg of epoxy chloropropane, and stirring and reacting for 100 minutes at the temperature of 55 ℃ to obtain partial epoxy modified fiber fine pulp.
In the step (2), the spiral carbon nanofibers are prepared by a chemical vapor growth method: acetylene is used as a carbon source, a titanium plate is used as a catalyst, phosphorus trichloride is used as a main catalyst, the temperature is 680 ℃, the argon flow is 50 mL/min, the acetylene flow is 18 mL/min, the hydrogen flow is 65 mL/min, and the phosphorus trichloride flow is 0.01 mL/min.
In the step (2), the preparation method of the composite nano material comprises the following steps:
(A) adding 1kg of spiral carbon nanofibers into 9kg of concentrated nitric acid with the mass concentration of 75%, stirring and treating for 8 hours at 140 ℃, performing suction filtration, washing to be neutral, performing vacuum drying to obtain acidified spiral carbon nanofibers, adding 10kg of ethylene glycol chelating type titanate coupling agent (WB-311, purchased from Nanjing one-piece chemical engineering and technology Co., Ltd.) with the mass concentration of 5% into isopropanol solution, stirring and refluxing for 3 hours under the nitrogen atmosphere, washing, and drying to obtain activated spiral carbon nanofibers;
(B) then adding 0.3kg of nano zinc oxide whisker into 3kg of 5% tetraisopropyl di (dioctyl phosphite acyloxy) titanate isopropanol solution with mass concentration, stirring and refluxing for 3 hours under nitrogen atmosphere, washing and drying to obtain activated nano zinc oxide whisker;
(C) and (3) finally, ultrasonically dispersing the activated nano zinc oxide whisker obtained in the step (B) in 5kg of acetone, then adding the activated spiral nano carbon fiber obtained in the step (A), stirring and reacting for 22 hours at 85 ℃, centrifuging, washing and drying to obtain the composite nano material.
In the step (2), the nano zinc oxide whisker accounts for 99.9 percent of the total weight, has an average particle size of 30nm, a length of 10 mu m and a specific surface area of 30m 2 /g。
The specific method of the step (3) is as follows: firstly, adding 1kg of composite nano material and 0.2kg of sodium hydroxide into 130kg of partial epoxy modified fiber fine pulp, uniformly dispersing by ultrasonic waves, reacting for 12 hours at 80 ℃ in a nitrogen atmosphere, and naturally cooling to room temperature.
Comparative example 3
The method for making the carton is as follows: manufacturing antistatic paper pulp into kraft paper, processing the kraft paper into corrugated boards by using a corrugating machine, then carrying out die cutting on the corrugated boards according to the unfolded shape of the carton to obtain unfolded boards of the corrugated carton, and finally gluing corresponding edges of the unfolded boards of the corrugated carton and bonding the unfolded boards together to obtain the carton.
The specific process of papermaking is as follows: screening out impurities, forming wet paper sheet at the net part, dewatering at the pressing part, drying in a drying cylinder, rolling paper and cutting.
The kraft paper is 130g/m 2 The corrugated board is 90g/m 2 And the distance between the upper shoulder and the lower shoulder of the corrugated board is 2.8 cm.
The preparation method of the antistatic paper pulp comprises the following steps:
(1) firstly, a waste corrugated case is pulped by a hydrapulper, slag is removed, fine grinding and white water dilution pulping are carried out, fiber fine pulp with the mass concentration of 5% is obtained, and partial epoxidation treatment is carried out, so that partial epoxy modified fiber fine pulp is obtained;
(2) mixing the spiral carbon nanofibers with acrylamide, and carrying out polymerization reaction to obtain a modified nanomaterial;
(3) and finally, adding the modified nano material into part of the epoxy modified fiber fine pulp, and reacting to obtain the antistatic paper pulp.
In the step (1), the specific method of the partial epoxidation treatment is as follows: firstly, adding 2kg of sodium hydroxide into 100kg of fiber fine pulp at the temperature of minus 10 ℃, stirring until the sodium hydroxide is completely dissolved, then adding 0.04kg of epoxy chloropropane, and stirring and reacting for 100 minutes at the temperature of 55 ℃ to obtain partial epoxy modified fiber fine pulp.
In the step (2), the spiral carbon nanofibers are prepared by a chemical vapor growth method: acetylene is used as a carbon source, a titanium plate is used as a catalyst, phosphorus trichloride is used as a main catalyst, the temperature is 680 ℃, the argon flow is 50 mL/min, the acetylene flow is 18 mL/min, the hydrogen flow is 65 mL/min, and the phosphorus trichloride flow is 0.01 mL/min.
In the step (2), the polymerization reaction is specifically carried out by the following method: adding 1kg of polysorbate-80 into 80kg of water, stirring until the polysorbate-80 is completely dissolved, adding 2kg of spiral carbon nanofiber and 0.2kg of acrylamide, uniformly dispersing by ultrasonic waves, adding 0.02kg of ammonium persulfate, stirring and reacting for 5 hours at 75 ℃ in a nitrogen atmosphere, centrifuging, washing and drying to obtain the modified nano material.
The specific method of the step (3) is as follows: firstly, adding 1kg of modified nano material and 0.2kg of sodium hydroxide into 130kg of partial epoxy modified fiber fine pulp, uniformly dispersing by ultrasonic waves, reacting for 12 hours at 80 ℃ in a nitrogen atmosphere, and naturally cooling to room temperature.
The cartons obtained in examples 1-3 and comparative examples 1-3 were subjected to performance tests, and the results are shown in table 1.
Wherein, the antistatic test is referred to GB/T1410-2006;
the tearing strength test is referred to GB/T455-.
TABLE 1 carton Performance test results
As can be seen from Table 1, the paper boxes obtained in examples 1 to 3 have low surface resistance, good antistatic effect, high tear strength and high tensile strength, which indicates excellent mechanical properties.
Comparative example 1 the modified composite nanomaterial was directly added to the fiber refiner pulp, comparative example 2 the modified composite nanomaterial was replaced with the composite nanomaterial, comparative example 3 the nano zinc oxide whisker was not added, and both the antistatic properties and mechanical properties of the obtained carton were significantly poor.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. An antistatic process for a carton is characterized in that antistatic treatment is carried out in the paper pulp processing process, and then the carton is prepared; the specific method of antistatic treatment is as follows:
(1) firstly, pulping a waste corrugated case by a hydrapulper, removing slag, performing fine grinding, diluting and pulping by white water to obtain fiber fine pulp with the mass concentration of 4-5%, and performing partial epoxidation treatment to obtain partial epoxy modified fiber fine pulp;
(2) then, taking the spiral carbon nanofibers and the nano zinc oxide whiskers as raw materials to obtain a composite nanomaterial, mixing the composite nanomaterial with acrylamide, and carrying out polymerization reaction to obtain a modified composite nanomaterial;
(3) finally, adding the modified composite nano material into part of the epoxy modified fiber fine pulp, and reacting to obtain antistatic paper pulp;
wherein in the step (2), the preparation method of the composite nano material comprises the following steps in parts by weight:
(A) adding 1 part of spiral carbon nanofiber into 7-9 parts of concentrated nitric acid with the mass concentration of 75-85%, stirring at 130-140 ℃ for 8-10 hours, performing suction filtration, washing to be neutral, performing vacuum drying to obtain acidified spiral carbon nanofiber, adding the acidified spiral carbon nanofiber into 8-10 parts of ethylene glycol chelating type titanate coupling agent isopropanol solution with the mass concentration of 5-8%, stirring and refluxing for 2-3 hours under the nitrogen atmosphere, washing, and drying to obtain activated spiral carbon nanofiber;
(B) then adding 0.3-0.5 part of nano zinc oxide whisker into 2-3 parts of 5-8% by mass tetraisopropyl di (dioctyl phosphite acyloxy) titanate isopropanol solution, stirring and refluxing for 2-3 hours under nitrogen atmosphere, washing, and drying to obtain activated nano zinc oxide whisker;
(C) and (3) finally, dispersing the activated nano zinc oxide whiskers obtained in the step (B) in 5-7 parts of acetone by ultrasonic waves, then adding the activated spiral nano carbon fibers obtained in the step (A), stirring and reacting at 75-85 ℃ for 22-24 hours, centrifuging, washing and drying to obtain the composite nano material.
2. The antistatic process for cartons as claimed in claim 1, wherein in step (1), the partial epoxidation treatment is specifically performed by the following method: firstly, adding 2-3 parts of sodium hydroxide into 100 parts of fiber fine pulp at the temperature of-5 to-10 ℃, stirring until the sodium hydroxide is completely dissolved, then adding 0.02-0.04 part of epoxy chloropropane, and stirring and reacting for 80-100 minutes at the temperature of 55-65 ℃ to obtain partial epoxy modified fiber fine pulp.
3. The antistatic process for cartons as claimed in claim 1, wherein in step (2), the spiral nano carbon fiber is prepared by chemical vapor growth method: acetylene is used as a carbon source, a titanium plate is used as a catalyst, phosphorus trichloride is used as a main catalyst, the temperature is 680-700 ℃, the argon flow is 45-50 mL/min, the acetylene flow is 18-20 mL/min, the hydrogen flow is 60-65 mL/min, and the phosphorus trichloride flow is 0.01-0.02 mL/min.
4. The antistatic process for cartons as claimed in claim 1, wherein in step (2), the nano zinc oxide whiskers account for 99.9% by weight, have an average particle size of 20-30 nm, a length of 10 μm and a specific surface area of 30m 2 /g。
5. The antistatic process for cartons as claimed in claim 1, wherein in step (2), the polymerization reaction is carried out by the following specific method in parts by weight: adding 1 part of polysorbate-80 into 80-90 parts of water, stirring until the polysorbate-80 is completely dissolved, adding 1-2 parts of composite nano material and 0.2-0.3 part of acrylamide, uniformly dispersing by ultrasonic waves, adding 0.01-0.02 part of ammonium persulfate, stirring and reacting for 3-5 hours at 75-85 ℃ in a nitrogen atmosphere, centrifuging, washing, and drying to obtain the modified composite nano material.
6. The antistatic process for cartons as claimed in claim 1, wherein the specific method of step (3) is as follows, in parts by weight: adding 1 part of modified composite nano material and 0.2-0.3 part of sodium hydroxide into 120-130 parts of partial epoxy modified fiber fine pulp, uniformly dispersing by ultrasonic waves, reacting at 80-90 ℃ for 10-12 hours in a nitrogen atmosphere, and naturally cooling to room temperature.
7. The antistatic process for cartons as claimed in claim 1, wherein the carton is prepared by the method comprising: manufacturing antistatic paper pulp into kraft paper, processing the kraft paper into corrugated boards by using a corrugating machine, then carrying out die cutting on the corrugated boards according to the unfolded shape of the carton to obtain unfolded boards of the corrugated carton, and finally gluing corresponding edges of the unfolded boards of the corrugated carton and bonding the unfolded boards together to obtain the carton.
8. The antistatic process for the carton according to claim 7, characterized in that the specific flow of the papermaking is as follows: screening out impurities, forming wet paper sheet at the net part, dewatering at the pressing part, drying in a drying cylinder, rolling paper and cutting.
9. The antistatic process for the carton according to claim 8, wherein the craft paper is 130-140 g/m 2 The corrugated board is 80-90 g/m 2 And the distance between the upper shoulder and the lower shoulder of the corrugated board is 2.8-3.1 cm.
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