CN115162056B - Production method of environment-friendly high-performance composite corrugated paper - Google Patents
Production method of environment-friendly high-performance composite corrugated paper Download PDFInfo
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- CN115162056B CN115162056B CN202210877591.5A CN202210877591A CN115162056B CN 115162056 B CN115162056 B CN 115162056B CN 202210877591 A CN202210877591 A CN 202210877591A CN 115162056 B CN115162056 B CN 115162056B
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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
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/30—Multi-ply
- D21H27/40—Multi-ply at least one of the sheets being non-planar, e.g. crêped
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/002—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B29/005—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to another layer of paper or cardboard layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/08—Corrugated paper or cardboard
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
- B32B37/1284—Application of adhesive
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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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
- 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
- D21H11/12—Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse
-
- 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
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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
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/36—Inorganic fibres or flakes
- D21H13/38—Inorganic fibres or flakes siliceous
-
- 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
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/35—Polyalkenes, e.g. polystyrene
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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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/06—Paper forming aids
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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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
-
- 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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/34—Ignifugeants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
- B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/558—Impact strength, toughness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/56—Damping, energy absorption
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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
Abstract
The invention discloses a production method of environment-friendly high-performance composite corrugated paper, which sequentially comprises a first paper layer, a second paper layer, a third paper layer and a fourth paper layer from top to bottom; the first paper layer is prepared by combining A components which comprise cellulose resin, polypropylene resin, sodium alginate, modified gelatin, a flame retardant and a plasticizer; the second paper layer is prepared from a component B, wherein the component B comprises waste paper fibers, chemical fiber PET, tin tetrachloride, a flame retardant and an auxiliary agent; the third layer paper is prepared from a component C, wherein the component C comprises inorganic fibers, an inorganic bonding agent, an inorganic filler, a flocculating agent, a toughening agent and a flame retardant; the fourth layer of paper is prepared from a component D, wherein the component D comprises modified wheat straw powder, cellulase, composite reinforced fiber, lignin grafted epoxy resin emulsion, a flame retardant and a tackifier.
Description
Technical Field
The invention relates to the technical field of corrugated paper production, in particular to a production method of environment-friendly high-performance composite corrugated paper.
Background
Corrugated paper is a plate-shaped object formed by bonding liner paper and corrugated paper formed by corrugated roller processing, and is generally divided into a single corrugated board and a double corrugated board, and is divided into A, B, C, E, F according to the corrugated size; the corrugated paper has the advantages of low cost, light weight, easy processing, high strength, excellent printing adaptability, convenient storage and transportation and the like; of all packaged printed products, most are transported in corrugated boxes, which shows the important role of corrugated board transport boxes in ensuring safe delivery of the product from the factory to the customer.
Because of the accumulation of a large number of cartons during logistics transportation and storage, a great potential safety hazard exists in the drying or summer, and the flame retardance of the corrugated cartons is also required to be enhanced. The existing method for carrying out flame-retardant modification on corrugated paper mainly comprises the steps of adding flame retardant into the corrugated paper or attaching the flame retardant to the surface through processing technologies such as in-pulp addition and finished product dipping, but the processing mode is easy to run off, the consumption of the flame retardant is large, and the strength of the corrugated paper is influenced.
Disclosure of Invention
The invention aims to provide a production method of environment-friendly high-performance composite corrugated paper, which solves the following technical problems:
the existing method for carrying out flame-retardant modification on corrugated paper mainly comprises the steps of adding flame retardant into the corrugated paper or attaching the flame retardant to the surface through processing technologies such as in-pulp addition and finished product dipping, but the processing mode is easy to run off, the consumption of the flame retardant is large, and the strength of the corrugated paper is influenced.
The aim of the invention can be achieved by the following technical scheme:
the production method of the environment-friendly high-performance composite corrugated paper comprises the steps of sequentially comprising a first paper layer, a second paper layer, a third paper layer and a fourth paper layer from top to bottom, wherein adjacent layers are bonded through an adhesive to form the composite corrugated paper;
the first paper layer is prepared by combining A components which comprise cellulose resin, polypropylene resin, sodium alginate, modified gelatin, a flame retardant and a plasticizer;
the second paper layer is prepared from a component B, wherein the component B comprises waste paper fibers, chemical fiber PET, tin tetrachloride, a flame retardant and an auxiliary agent.
The third layer paper is prepared from a component C, wherein the component C comprises inorganic fibers, an inorganic bonding agent, an inorganic filler, a flocculating agent, a toughening agent and a flame retardant.
The fourth layer of paper is prepared from a component D, wherein the component D comprises modified wheat straw powder, cellulase, composite reinforced fiber, lignin grafted epoxy resin emulsion, a flame retardant and a tackifier.
Preferably, the material dosages of the component A are respectively as follows: 40-70 parts of cellulose resin, 5-9 parts of polypropylene resin, 2-5 parts of sodium alginate, 3-6 parts of modified gelatin, 1-5 parts of flame retardant and 0.5-1 part of plasticizer;
the material consumption of the component B is as follows: 20-28 parts of waste paper fiber, 4-8 parts of chemical fiber PET, 1-3 parts of stannic chloride, 2-4 parts of flame retardant and 0.6-1.5 parts of auxiliary agent;
the consumption of each material of the component C is as follows: 15-20 parts of inorganic fibers, 2-7 parts of inorganic bonding agents, 1-4 parts of inorganic fillers, 1-3 parts of toughening agents and 2-6 parts of flame retardants.
The dosage of each material of the component D is respectively as follows: 10-20 parts of modified wheat straw powder, 1-4 parts of cellulase, 5-10 parts of composite reinforced fiber, 3-6 parts of lignin grafted epoxy resin emulsion, 1-5 parts of flame retardant and 0.2-0.8 part of tackifier.
Preferably, the flame retardant is prepared from magnesium hydroxide, tricresyl phosphate and chlordane anhydride according to a mass ratio of 2:3:1.
Preferably, the plasticizer is at least one of urea, di-n-octyl phthalate and glycerin.
Preferably, the preparation method of the modified gelatin comprises the following steps: a. mixing gelatin and lauric acid according to a mass ratio of 3:1, adding tetrahydrofuran solution into the mixture, heating to 75-80 ℃ in a first water bath, refluxing, and reacting for 2-5h; then adjusting the pH value to 8.5-9, heating to 85-90 ℃ in a second water bath for reaction for 1-3h, cooling, discharging, and drying to obtain the modified gelatin.
Preferably, the auxiliary agent is azodicarbonamide, zinc stearate and antioxidant 168, and the mass ratio is 1: 1:2.
Preferably, the inorganic fiber is one or more of high silica fiber, polycrystalline mullite fiber and alumina fiber; the inorganic bonding agent is one or more of silica sol, aluminum sol or zirconium sol; the inorganic filler is one or more of calcium carbonate, silicon dioxide and talcum powder.
Preferably, the toughening agent is chlorinated polyethylene and ethylene-vinyl acetate copolymer, and the mass ratio is 1: 2.
The production method of the composite corrugated paper comprises the following steps:
s1, preparing a first paper layer: adding cellulose resin and polypropylene resin into a pulper for crushing, continuously adding 50-100 parts of water for dilution in the crushing process, adding sodium alginate, modified gelatin, a flame retardant and a plasticizer into the diluted slurry, stirring uniformly, pulping the slurry, and finally carrying out papermaking, drying and forming to obtain a first paper layer;
s2, preparing a second paper layer: crushing waste paper fibers and chemical fiber PET into slurry in a pulper, adding stannic chloride, a flame retardant and an auxiliary agent into the slurry, then heating to 50-60 ℃, preserving heat in a water bath for 4-7 hours, heating to boiling for 2-3 minutes, naturally cooling to room temperature, and drying to obtain a second paper layer;
s3, preparing a third paper layer: adding inorganic fibers into a pulper, crushing into slurry, adding an inorganic bonding agent, an inorganic filler, a toughening agent and a flame retardant into the slurry, then heating to 60-70 ℃, carrying out water bath heat preservation for 3-5 hours, then heating to boiling for 1-2 minutes, naturally cooling to room temperature, and drying to obtain a third paper layer;
s4, preparing a fourth paper layer: adding modified wheat straw powder into a pulper for crushing, continuously adding 30-60 parts of water for dilution in the crushing process, adding cellulase, composite reinforced fiber, lignin grafted epoxy resin emulsion, flame retardant and tackifier into the diluted slurry, and drying and molding to obtain a fourth paper layer;
s5, preparing a first composite layer: coating adhesives on the upper and lower surfaces of the first paper layer, and respectively attaching the second paper layer and the third paper layer to the upper and lower surfaces of the first paper layer to obtain a first composite layer;
s6, preparing a core paper layer: placing the third paper layer on a corrugating machine, and pressing the corrugated core paper layer at 160-190 ℃;
s7, pressing and forming the composite corrugated paper: and (3) taking the wavy core paper layer, coating adhesives on the upper and lower surfaces of the wavy core paper layer, and respectively pressing the first composite layer and the fourth paper layer on the upper and lower surfaces of the wavy core paper layer to obtain the environment-friendly high-performance composite corrugated paper.
The invention has the beneficial effects that:
(1) The invention is formed by compounding the first paper layer prepared by the component A, the second paper layer prepared by the component B, the third paper layer prepared by the component C and the fourth paper layer prepared by the component D, so that the composite corrugated paper layer has good shock resistance, good shock resistance and long service life, is favorable for realizing good protection on packaged objects, and meanwhile, the fire retardant prepared by magnesium hydroxide, tricresyl phosphate and chlordane anhydride is added into each paper layer, so that the corrugated paper box prepared by the composite corrugated paper layer has good fire resistance, and is difficult to generate fire in the transportation or storage process;
(2) According to the invention, amino on the modified gelatin side group reacts with carboxyl of lauric acid to synthesize macromolecular surfactant with acyl in the side chain, and the macromolecular surfactant is matched with a flame retardant to greatly improve the heat distortion temperature.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic flow chart of a method for producing the environment-friendly high-performance composite corrugated paper.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
S1, adding 40 parts of cellulose resin and 5 parts of polypropylene resin into a pulper for crushing, continuously adding 50 parts of water for dilution in the crushing process, adding 2 parts of sodium alginate, 3 parts of modified gelatin, 1 part of flame retardant and 0.5 part of plasticizer into the diluted slurry, uniformly stirring, pulping the slurry, and finally carrying out papermaking, drying and forming to obtain a first paper layer; the flame retardant is prepared from magnesium hydroxide, tricresyl phosphate and chlordane anhydride according to the mass ratio of 2:3:1;
the plasticizer is urea;
the preparation method of the modified gelatin comprises the following steps: a. mixing gelatin and lauric acid according to a mass ratio of 3:1, adding tetrahydrofuran solution into the mixture, heating to 75 ℃ in a first water bath, refluxing, and reacting for 2 hours; then adjusting the pH value to 8.5, heating to 85 ℃ in a second water bath for reaction for 1h, cooling and discharging, and drying to obtain the modified gelatin;
s2, putting 20 parts of waste paper fibers and 4 parts of chemical fiber PET into a pulper, crushing into slurry, adding 1 part of stannic chloride, 2 parts of flame retardant and 0.6 part of auxiliary agent into the slurry, then heating to 50 ℃, preserving heat for 4 hours in a water bath, then heating to boiling for 2 minutes, naturally cooling to room temperature, and drying to obtain a second paper layer;
the auxiliary agent is azodicarbonamide, zinc stearate and antioxidant 168, and the mass ratio is 1:1:2 mixture;
s3, adding 15 parts of inorganic fibers into a pulper, crushing into slurry, adding 2 parts of inorganic bonding agent, 1 part of inorganic filler, 1 part of toughening agent and 2 parts of flame retardant into the slurry, then heating to 60 ℃, preserving heat for 3 hours in a water bath, then heating to boiling for 1 minute, naturally cooling to room temperature, and drying to obtain a third paper layer;
the inorganic fiber is high silica fiber; the inorganic bonding agent is silica sol; the inorganic filler is calcium carbonate;
s4, adding 10 parts of modified wheat straw powder into a pulper for crushing, continuously adding 30 parts of water for dilution in the crushing process, adding 1 part of cellulase, 5 parts of composite reinforced fiber, 3 parts of lignin grafted epoxy resin emulsion, 1 part of flame retardant and 0.2 part of tackifier into the diluted slurry, and carrying out papermaking, drying and forming to obtain a fourth paper layer;
the toughening agent is chlorinated polyethylene and ethylene-vinyl acetate copolymer, and the mass ratio is 1:2, a mixture of two or more of the above-mentioned materials;
s5, taking a first paper layer, coating adhesives on the upper surface and the lower surface of the first paper layer, and respectively attaching a second paper layer and a third paper layer on the upper surface and the lower surface of the first paper layer to obtain a first composite layer;
s6, placing the third paper layer on a corrugating machine, and pressing the corrugated core paper layer at 160 ℃;
and S7, taking a wavy core paper layer, coating adhesives on the upper and lower surfaces of the wavy core paper layer, and respectively pressing the first composite layer and the fourth paper layer on the upper and lower surfaces of the wavy core paper layer to obtain the environment-friendly high-performance composite corrugated paper.
Example 2
S1, 60 parts of cellulose resin and 7 parts of polypropylene resin are taken and added into a pulper for crushing, 80 parts of water is continuously added for dilution in the crushing process, 3 parts of sodium alginate, 5 parts of modified gelatin, 2 parts of flame retardant and 0.8 part of plasticizer are added into diluted slurry for uniform stirring, then pulping treatment is carried out on the slurry, and finally papermaking, drying and forming are carried out to obtain a first paper layer; the flame retardant is prepared from magnesium hydroxide, tricresyl phosphate and chlordane anhydride according to the mass ratio of 2:3:1;
the plasticizer is di-n-octyl phthalate;
the preparation method of the modified gelatin comprises the following steps: a. mixing gelatin and lauric acid according to a mass ratio of 3:1, adding tetrahydrofuran solution into the mixture, heating to 78 ℃ in a first water bath, refluxing, and reacting for 3 hours; then adjusting the pH value to 8.6, heating to 88 ℃ in a second water bath for reaction for 2 hours, cooling and discharging, and drying to obtain the modified gelatin;
s2, putting 25 parts of waste paper fibers and 6 parts of chemical fiber PET into a pulper, crushing into slurry, adding 2 parts of stannic chloride, 3 parts of flame retardant and 1 part of auxiliary agent into the slurry, then heating to 55 ℃, preserving heat for 5 hours in a water bath, then heating to boiling for 3 minutes, naturally cooling to room temperature, and drying to obtain a second paper layer;
the auxiliary agent is azodicarbonamide, zinc stearate and antioxidant 168, and the mass ratio is 1:1:2 mixture;
s3, adding 18 parts of inorganic fibers into a pulper, crushing into slurry, adding 5 parts of inorganic bonding agent, 3 parts of inorganic filler, 2 parts of toughening agent and 4 parts of flame retardant into the slurry, then heating to 65 ℃, preserving heat for 4 hours in a water bath, then heating to boiling for 1.5 minutes, naturally cooling to room temperature, and drying to obtain a third paper layer;
the inorganic fiber is polycrystalline mullite fiber; the inorganic bonding agent is aluminum sol; the inorganic filler is silicon dioxide;
s4, adding 15 parts of modified wheat straw powder into a pulper for crushing, continuously adding 50 parts of water for dilution in the crushing process, adding 3 parts of cellulase, 8 parts of composite reinforced fiber, 5 parts of lignin grafted epoxy resin emulsion, 2 parts of flame retardant and 0.5 part of tackifier into the diluted slurry, and carrying out papermaking, drying and forming to obtain a fourth paper layer;
the toughening agent is chlorinated polyethylene and ethylene-vinyl acetate copolymer, and the mass ratio is 1:2, a mixture of two or more of the above-mentioned materials;
s5, taking a first paper layer, coating adhesives on the upper surface and the lower surface of the first paper layer, and respectively attaching a second paper layer and a third paper layer on the upper surface and the lower surface of the first paper layer to obtain a first composite layer;
s6, placing the third paper layer on a corrugating machine, and pressing the corrugated core paper layer at 180 ℃;
and S7, taking a wavy core paper layer, coating adhesives on the upper and lower surfaces of the wavy core paper layer, and respectively pressing the first composite layer and the fourth paper layer on the upper and lower surfaces of the wavy core paper layer to obtain the environment-friendly high-performance composite corrugated paper.
Example 3
S1, taking 70 parts of cellulose resin and 9 parts of polypropylene resin, adding into a pulper for crushing, continuously adding 100 parts of water for dilution in the crushing process, adding 5 parts of sodium alginate, 6 parts of modified gelatin, 5 parts of flame retardant and 1 part of plasticizer into diluted slurry, uniformly stirring, pulping the slurry, and finally carrying out papermaking, drying and forming to obtain a first paper layer; the flame retardant is prepared from magnesium hydroxide, tricresyl phosphate and chlordane anhydride according to the mass ratio of 2:3:1;
the plasticizer is glycerol;
the preparation method of the modified gelatin comprises the following steps: a. mixing gelatin and lauric acid according to a mass ratio of 3:1, adding tetrahydrofuran solution into the mixture, heating to 80 ℃ in a first water bath, refluxing, and reacting for 5 hours; then adjusting the pH value to 9, heating to 90 ℃ in a water bath for reaction for 3 hours, cooling and discharging, and drying to obtain the modified gelatin;
s2, putting 28 parts of waste paper fibers and 8 parts of chemical fiber PET into a pulper, crushing into slurry, adding 3 parts of stannic chloride, 4 parts of flame retardant and 1.5 parts of auxiliary agent into the slurry, then heating to 60 ℃, preserving heat for 7 hours in a water bath, then heating to boiling for 3 minutes, naturally cooling to room temperature, and drying to obtain a second paper layer;
the auxiliary agent is azodicarbonamide, zinc stearate and antioxidant 168, and the mass ratio is 1:1:2 mixture;
s3, adding 20 parts of inorganic fibers into a pulper, crushing into slurry, adding 7 parts of inorganic bonding agent, 4 parts of inorganic filler, 3 parts of toughening agent and 6 parts of flame retardant into the slurry, then heating to 70 ℃, preserving heat for 5 hours in a water bath, then heating to boiling for 2 minutes, naturally cooling to room temperature, and drying to obtain a third paper layer;
the inorganic fiber is alumina fiber; the inorganic bonding agent is zirconium sol; the inorganic filler is talcum powder;
s4, adding 20 parts of modified wheat straw powder into a pulper for crushing, continuously adding 60 parts of water for dilution in the crushing process, adding 4 parts of cellulase, 10 parts of composite reinforced fiber, 6 parts of lignin grafted epoxy resin emulsion, 5 parts of flame retardant and 0.8 part of tackifier into the diluted slurry, and carrying out papermaking, drying and forming to obtain a fourth paper layer;
the toughening agent is chlorinated polyethylene and ethylene-vinyl acetate copolymer, and the mass ratio is 1:2, a mixture of two or more of the above-mentioned materials;
s5, taking a first paper layer, coating adhesives on the upper surface and the lower surface of the first paper layer, and respectively attaching a second paper layer and a third paper layer on the upper surface and the lower surface of the first paper layer to obtain a first composite layer;
s6, placing the third paper layer on a corrugating machine, and pressing the corrugated core paper layer at 190 ℃;
and S7, taking a wavy core paper layer, coating adhesives on the upper and lower surfaces of the wavy core paper layer, and respectively pressing the first composite layer and the fourth paper layer on the upper and lower surfaces of the wavy core paper layer to obtain the environment-friendly high-performance composite corrugated paper.
Comparative example 1
Comparative example 1 is different from example 2 in that the first paper layer, the second paper layer, the third paper layer and the fourth paper layer in comparative example 2 are not added with flame retardant, and the rest is the same as example 2.
Comparative example 2
Comparative example 2 differs from example 2 in that the a component in the first paper layer of comparative example 2 does not contain modified gelatin, and the remainder is the same as example 2.
The corrugated papers prepared in examples 1-3 and comparative examples 1-2 were tested for Limiting Oxygen Index (LOI) according to GB/T5454-1997; the results of the combustion performance tests conducted using GB/T14656-2009 for each of examples 1-4 and comparative examples 1-3 are shown in the following table.
In summary, the corrugated paper prepared in the examples 1-3 of the present invention has an improved flame retardant effect compared with the corrugated paper prepared in the comparative examples 1-2.
The foregoing describes one embodiment of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.
Claims (4)
1. The production method of the environment-friendly high-performance composite corrugated paper is characterized in that the composite corrugated paper sequentially comprises a first paper layer, a second paper layer, a third paper layer and a fourth paper layer from top to bottom, and adjacent layers are bonded through an adhesive to form the composite corrugated paper;
the first paper layer is prepared by combining A components which comprise cellulose resin, polypropylene resin, sodium alginate, modified gelatin, a flame retardant and a plasticizer;
the second paper layer is prepared from a component B, wherein the component B comprises waste paper fibers, chemical fiber PET, tin tetrachloride, a flame retardant and an auxiliary agent;
the third paper layer is prepared from a component C, wherein the component C comprises inorganic fibers, an inorganic bonding agent, an inorganic filler, a flocculating agent, a toughening agent and a flame retardant;
the fourth paper layer is prepared from a component D, wherein the component D comprises modified wheat straw powder, cellulase, composite reinforced fiber, lignin grafted epoxy resin emulsion, a flame retardant and a tackifier;
the preparation method of the modified gelatin comprises the following steps: a. mixing gelatin and lauric acid according to a mass ratio of 3:1, adding tetrahydrofuran solution into the mixture, heating to 75-80 ℃ in a first water bath, refluxing, and reacting for 2-5h; then adjusting the pH value to 8.5-9, heating to 85-90 ℃ in a second water bath for reaction for 1-3 hours, cooling and discharging, and drying to obtain the modified gelatin;
the auxiliary agent is azodicarbonamide, zinc stearate and an antioxidant 168, wherein the mass ratio of the azodicarbonamide to the zinc stearate to the antioxidant 168 is 1:1:2 mixture;
the inorganic fiber is one or more of high silica fiber, polycrystalline mullite fiber and alumina fiber; the inorganic bonding agent is one or more of silica sol, aluminum sol or zirconium sol; the inorganic filler is one or more of calcium carbonate, silicon dioxide and talcum powder;
the toughening agent is chlorinated polyethylene and ethylene-vinyl acetate copolymer, and the mass ratio is 1:2, a mixture of two or more of the above-mentioned materials;
the production method of the composite corrugated paper comprises the following steps:
s1, adding cellulose resin and polypropylene resin into a pulper for crushing, continuously adding 50-100 parts of water for dilution in the crushing process, adding sodium alginate, modified gelatin, a flame retardant and a plasticizer into the diluted slurry, uniformly stirring, pulping the slurry, and finally performing papermaking, drying and forming to obtain a first paper layer;
s2, putting the waste paper fibers and the chemical fiber PET into a pulper, crushing into slurry, adding tin tetrachloride, a flame retardant and an auxiliary agent into the slurry, then heating to 50-60 ℃, preserving heat for 4-7 hours in a water bath, then heating to boiling for 2-3 minutes, naturally cooling to room temperature, and drying to obtain a second paper layer;
s3, adding inorganic fibers into a pulper, crushing into slurry, adding an inorganic bonding agent, an inorganic filler, a toughening agent and a flame retardant into the slurry, then heating to 60-70 ℃, carrying out water bath heat preservation for 3-5 hours, then heating to boiling for 1-2 minutes, naturally cooling to room temperature, and drying to obtain a third paper layer;
s4, adding the modified wheat straw powder into a pulper for crushing, continuously adding 30-60 parts of water for dilution in the crushing process, adding cellulase, composite reinforced fiber, lignin grafted epoxy resin emulsion, flame retardant and tackifier into the diluted slurry, and drying and molding to obtain a fourth paper layer;
s5, taking a first paper layer, coating adhesives on the upper surface and the lower surface of the first paper layer, and respectively attaching a second paper layer and a third paper layer on the upper surface and the lower surface of the first paper layer to obtain a first composite layer;
s6, placing the third paper layer on a corrugating machine, and pressing the corrugated core paper layer at 160-190 ℃;
and S7, taking a wavy core paper layer, coating adhesives on the upper and lower surfaces of the wavy core paper layer, and respectively pressing the first composite layer and the fourth paper layer on the upper and lower surfaces of the wavy core paper layer to obtain the environment-friendly high-performance composite corrugated paper.
2. The method for producing the environment-friendly high-performance composite corrugated paper according to claim 1, wherein the consumption of each material of the component A is as follows: 40-70 parts of cellulose resin, 5-9 parts of polypropylene resin, 2-5 parts of sodium alginate, 3-6 parts of modified gelatin, 1-5 parts of flame retardant and 0.5-1 part of plasticizer;
the material consumption of the component B is as follows: 20-28 parts of waste paper fiber, 4-8 parts of chemical fiber PET, 1-3 parts of stannic chloride, 2-4 parts of flame retardant and 0.6-1.5 parts of auxiliary agent;
the consumption of each material of the component C is as follows: 15-20 parts of inorganic fibers, 2-7 parts of inorganic bonding agents, 1-4 parts of inorganic fillers, 1-3 parts of toughening agents and 2-6 parts of flame retardants;
the dosage of each material of the component D is respectively as follows: 10-20 parts of modified wheat straw powder, 1-4 parts of cellulase, 5-10 parts of composite reinforced fiber, 3-6 parts of lignin grafted epoxy resin emulsion, 1-5 parts of flame retardant and 0.2-0.8 part of tackifier.
3. The production method of the environment-friendly high-performance composite corrugated paper is characterized in that the flame retardant is prepared from magnesium hydroxide, tricresyl phosphate and chlordane anhydride according to a mass ratio of 2:3:1.
4. The method for producing environment-friendly high-performance composite corrugated paper according to claim 3, wherein the plasticizer is at least one of urea, di-n-octyl phthalate and glycerin.
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| CN101148560A (en) * | 2007-10-12 | 2008-03-26 | 芜湖力特尔涂料制造有限公司 | Anti-flaming dope containing magnesium hydroxide |
| JP2009256807A (en) * | 2008-04-11 | 2009-11-05 | Matsumoto Yushi Seiyaku Co Ltd | Flameproofing agent and method for producing flame-retardant fiber |
| CN111634098A (en) * | 2020-05-29 | 2020-09-08 | 马鞍山市康辉纸箱纸品有限公司 | Preparation method of corrugated paper with flame retardant effect |
| CN113512908A (en) * | 2021-07-16 | 2021-10-19 | 浙江安吉天宏纸业有限公司 | Production method of environment-friendly high-performance composite corrugated paper |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104553215B (en) * | 2013-10-16 | 2017-05-24 | 北京化工大学 | Transparent, flame-retardant, thermal-insulation and anti-ultraviolet polymer composite film as well as preparation method and application thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101148560A (en) * | 2007-10-12 | 2008-03-26 | 芜湖力特尔涂料制造有限公司 | Anti-flaming dope containing magnesium hydroxide |
| JP2009256807A (en) * | 2008-04-11 | 2009-11-05 | Matsumoto Yushi Seiyaku Co Ltd | Flameproofing agent and method for producing flame-retardant fiber |
| CN111634098A (en) * | 2020-05-29 | 2020-09-08 | 马鞍山市康辉纸箱纸品有限公司 | Preparation method of corrugated paper with flame retardant effect |
| CN113512908A (en) * | 2021-07-16 | 2021-10-19 | 浙江安吉天宏纸业有限公司 | Production method of environment-friendly high-performance composite corrugated paper |
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