CN111809438A - Production method of total heat exchange graphene paper film - Google Patents

Production method of total heat exchange graphene paper film Download PDF

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Publication number
CN111809438A
CN111809438A CN202010663656.7A CN202010663656A CN111809438A CN 111809438 A CN111809438 A CN 111809438A CN 202010663656 A CN202010663656 A CN 202010663656A CN 111809438 A CN111809438 A CN 111809438A
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heat exchange
total heat
surface sizing
paper
production method
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初杰
王光民
于东兴
李雪冰
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Weifang Jiegao Nonwovens Technology Co ltd
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Weifang Jiegao Nonwovens Technology Co ltd
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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
    • 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
    • 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
    • D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
    • D21H17/24—Polysaccharides
    • D21H17/25—Cellulose
    • D21H17/26—Ethers thereof
    • 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
    • D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
    • D21H17/24—Polysaccharides
    • D21H17/28—Starch
    • D21H17/29—Starch cationic
    • 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
    • D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/47—Condensation polymers of aldehydes or ketones
    • 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
    • D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/47—Condensation polymers of aldehydes or ketones
    • D21H17/49—Condensation polymers of aldehydes or ketones with compounds containing hydrogen bound to nitrogen
    • D21H17/51—Triazines, e.g. melamine
    • 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
    • D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
    • D21H17/55—Polyamides; Polyaminoamides; Polyester-amides
    • 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
    • D21H19/00—Coated paper; Coating material
    • 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/10—Coatings without pigments
    • D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
    • 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/10—Coatings without pigments
    • D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
    • D21H19/20—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/80—Paper comprising more than one coating
    • D21H19/84—Paper comprising more than one coating on both sides of the substrate
    • 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
    • D21H21/16—Sizing or water-repelling agents
    • 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
    • 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
    • D21H21/36—Biocidal agents, e.g. fungicidal, bactericidal, insecticidal agents
    • 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
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/005—Mechanical treatment

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  • Mechanical Engineering (AREA)
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Abstract

The invention provides a production method of a full heat exchange graphene paper film, which comprises the steps of base paper making, surface sizing solution preparation and surface sizing solution coating; manufacturing the base paper: preparing plant fiber slurry, and papermaking on a rotary screen or a fourdrinier machine to obtain base paper; the beating degree of the plant fiber pulp is 30-70 degrees SR, and the papermaking speed is 50-100 m/min. Preparing a surface sizing solution: mixing high molecular polymer and flame retardant to prepare glue solution, and adding an antibacterial agent into the glue solution; the mass ratio of the high molecular polymer to the flame retardant is 1: 4-10; the addition of the antibacterial agent is 0.15-0.3% of the glue solution; the concentration of the surface sizing liquid is 10-40%. The total heat exchange graphene paper film prepared by the production method is made into a total heat exchanger core, and the sensible heat efficiency of a fresh air system adopting the total heat exchanger core is 70-78%.

Description

Production method of total heat exchange graphene paper film
Technical Field
The invention belongs to the technical field of special paper, and particularly relates to a production method of a total heat exchange graphene paper film.
Background
When the total heat exchanger works, indoor exhaust air and fresh air flow through the core body of the exchanger in a quadrature mode, because the temperature difference and the steam partial pressure difference exist in the air flow at the two sides of the airflow division plate, the heat and mass transfer phenomena are presented when the two air flows pass through the division plate, and the total heat exchange process is initiated. When the air conditioner operates in summer, fresh air is exhausted from the room to obtain cold energy, so that the temperature is reduced, and meanwhile, the moisture content of the fresh air is reduced through humidity exchange; when the air conditioner operates in winter, the fresh air obtains heat from indoor exhaust air, the temperature rises, and meanwhile, the moisture content of the fresh air is improved through humidity exchange. Based on the above working principle, the core component in the fresh air system, i.e., the core material of the total heat exchanger, needs to have good heat transfer performance to effectively recover the sensible heat in the exhaust air. It should also have a high tightness to achieve very low air permeability, effectively isolating fresh air from exhaust air (CO separation)2And the like) to ensure that fresh air is not affected; and simultaneously has high moisture permeability so as to effectively recover latent heat in the exhaust air.
Due to the limitation of the existing production process of total heat exchange paper, it is difficult to produce materials with good heat transfer performance, high tightness, extremely low air permeability and high moisture permeability. The total heat exchange paper is used for manufacturing a core body of the total heat exchanger, and is the key of the enthalpy efficiency of the total heat exchange of the fresh air purification system.
As is well known, an air conditioner works indoors in a building, and if the air conditioner is not sealed and ventilated, air exchange between the indoor air and the outdoor air is not performed for a long time, so that the air conditioner becomes dirty, and therefore, the air conditioner needs to continuously exchange with fresh air outdoors. The total heat exchanger is a key factor of energy exchange of a fresh air system, and the method for completing the energy exchange of indoor and outdoor air by using the total heat exchanger is a common method at home and abroad at present. The effect influencing factors of the total heat exchanger mainly comprise the following factors: sensible heat: the heat absorbed or released along with the temperature change of the humid air is utilized to recover sensible heat by utilizing the temperature difference of fresh air and exhaust air. Latent heat: heat absorbed or released (heat of vaporization) as the concentration of water vapor in humid air changes. Total heat (enthalpy): the sum of sensible heat and latent heat, and the enthalpy value is the same as the total heat value in a general state.
Chinese patent with application number of CN 110485202A provides a method for producing total heat exchange paper, and the key point of the patent application is that natural high molecular polymer and water-insoluble antibacterial agent are mixed and stirred uniformly to obtain 2.0-10.0g/m2The surface sizing solution of (1), wherein the natural high molecular polymer is at least one of starch, sodium carboxymethyl cellulose, guar gum, polyvinylpyrrolidone, chitosan, soybean casein and gelatin; and (4) applying surface sizing liquid on the base paper to obtain the total heat exchange paper. The application of the patent utilizes that natural high molecular polymer contains a large amount of hydrophilic groups (such as hydroxyl and amino) and has affinity effect on water vapor molecules, and the hydrophilic groups and the water vapor molecules interact in a form of hydrogen bonds, so that the moisture retention and moisture permeability effect is achieved, and a certain effect is achieved on improving the latent heat exchange efficiency. However, the patent application does not relate to the improvement of sensible heat exchange efficiency and the reduction of air permeability.
In summary, the prior art method for producing total heat exchange paper has the following disadvantages: sensible heat exchange efficiency, air permeability, moisture permeability, and wet efficiency cannot be improved at the same time and break efficiency is not improved.
Disclosure of Invention
The invention aims to solve the technical problems and provides a production method of a total heat exchange graphene paper film, which achieves the following aims: the total heat exchange paper membrane with excellent sensible heat exchange efficiency, air permeability, moisture permeability, wet efficiency and break efficiency is prepared.
The technical scheme adopted by the invention is as follows:
a production method of a full heat exchange graphene paper film comprises the steps of base paper making, surface sizing solution preparation and surface sizing solution coating; manufacturing the base paper: preparing pulp by adopting plant fibers, and papermaking on a rotary screen or a fourdrinier machine to obtain base paper; the beating degree of the plant fiber pulp is 30-70 degrees SR, and the papermaking speed is 50-100 m/min.
The plant fiber slurry: the mass ratio of imported softwood pulp to hardwood pulp is (50-100%): 0-50%);
adding graphene aqueous slurry into plant fiber slurry in the base paper making step, wherein the addition amount is 0.5-3% of the relative absolute dry fiber amount; or adding graphene aqueous slurry into the glue solution in the step of preparing the surface sizing solution, wherein the addition amount is 3-20% of the mass of the glue solution.
The graphene aqueous slurry comprises: the content of the effective component is 5-15%, and the viscosity is 1000-6000 mpa.s.
Manufacturing the base paper: at least one of urea-formaldehyde resin, polyamide epichlorohydrin resin, melamine formaldehyde resin and polyethyleneimine is added into the slurry, and the addition amount is 2-5% of the absolute dry fiber amount.
Adding at least one of polyacrylamide, cationic starch and sodium carboxymethyl cellulose into the slurry; the addition amount is 2-5% of the relative absolute dry fiber amount.
Preparing a surface sizing solution: mixing high molecular polymer and flame retardant to prepare glue solution, and adding an antibacterial agent into the glue solution; the mass ratio of the high molecular polymer to the flame retardant is 1: 4-10; the addition of the antibacterial agent is 0.15-0.3% of the glue solution; the concentration of the surface sizing liquid is 10-40%.
The application surface sizing solution: surface sizing is carried out on the base paper to obtain a full heat exchange graphene paper film; the sizing mode is one of dipping, single-side coating, double-side coating and spraying.
The application surface sizing solution: the coating weight of the glue solution is 5-15g/m2。
The application surface sizing solution: after surface sizing, drying by a drying cylinder until the moisture is 8-12%, and calendering the paper by a soft calender or a super calender.
And (3) calendering: the line pressure is 60-300kN/m, and the hot oil temperature is 100-200 ℃.
By adopting the technical scheme, the invention has the following beneficial effects:
(1) the total heat exchange graphene paper film prepared by the production method is manufactured into a total heat exchanger core, the sensible heat efficiency of a fresh air system adopting the total heat exchanger core is 70-78%, the wet efficiency is 70-80%, and the break efficiency is 70-79%.
(2) The invention adopts specific beating degree for beating, and uses a soft calender or a super calender for calendering at the same time, so as to improve the tightness of paper, achieve extremely low air permeability, and effectively isolate fresh air and exhaust air (block CO)2And the like); meanwhile, the graphene has excellent adsorption performance, can effectively adsorb and block harmful gases such as PM2.5, CO2 and the like, purifies fresh air entering a room, the effective air exchange rate of a plate-frame type fresh air system reaches more than 94%, and the effective air exchange rate of a corrugated type fresh air system reaches more than 97%.
The total heat exchange graphene paper film prepared by the production method has the air permeability of less than or equal to 0.2 mu m/Pa.s and the moisture permeability of more than or equal to 1000g/m in the detection environment with the temperature of 23 ℃ and the humidity of 50% RH2·24h。
(3) When the total heat exchange graphene paper film prepared by the method is used for manufacturing a fresh air system of a total heat exchanger core, the sensible heat exchange rate is improved by 5-15%, the total heat exchange rate (break efficiency) is improved by 5-10%, and compared with a common fresh air system without graphene, the air conditioner can save energy by about 10%.
Graphene (Graphene) is a two-dimensional carbon nanomaterial composed of carbon atoms in sp hybridized orbitals into a hexagonal honeycomb lattice. Graphene has very good thermal conductivity. The pure defect-free single-layer graphene has the thermal conductivity coefficient as high as 5300W/mK, is the carbon material with the highest thermal conductivity coefficient so far, and is higher than that of a single-wall carbon nanotube (3500W/mK) and a multi-wall carbon nanotube (3000W/mK). When it is used as carrier, its thermal conductivity can be up to 600W/mK. The graphene water-based slurry can be uniformly mixed in the paper pulp, the nanoscale graphene has strong interface bonding force and can be tightly attached to plant fibers, so that the heat conductivity of the plant fibers is greatly improved, the retention rate of the graphene can be effectively improved by the dry strength agent added into the paper pulp, and the improvement of the heat conductivity of the full heat exchange graphene paper film is facilitated.
Detailed Description
The present application will be described in further detail with reference to examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
Comparative example 1
A method for producing total heat exchange paper (without added graphene) comprises the following steps:
1) manufacturing base paper: 70% of softwood pulp and 30% of hardwood pulp are used as raw materials, the beating degree of mixed pulp is 50 DEG SR, polyamide-epichlorohydrin resin with the absolute dry fiber amount of 2% and polyacrylamide with the absolute dry fiber amount of 0.4% are added into the pulp, and the raw paper is manufactured on a rotary screen paper machine by taking water as a medium, wherein the speed of the machine is 100 m/min.
2) Preparing a surface sizing solution: preparing a glue solution with the concentration of 22% by mixing starch and a phosphorus flame retardant according to the proportion of 1:5, adding 0.2% (mass percent) of organic bromine compound, and uniformly stirring to obtain a surface sizing solution;
the main component of the phosphorus flame retardant is phosphate;
the organic bromine compound mainly comprises 2, 2-dibromo-cyanoacetamide.
3) Application of surface sizing solution: dipping base paper by adopting a surface sizing modeApplying glue to the surface of the substrate, wherein the surface gluing method is to apply glue by adopting a two-roller surface glue machine, and the pressure of a glue applying roller is 3.0kg/m2The glue amount is 12g/m2Drying the paper by a drying cylinder until the moisture content is 10 percent to obtain the total heat exchange paper.
Example 1
A production method of a total heat exchange graphene paper film comprises the following steps:
1) manufacturing base paper: adopting 70% softwood pulp and 30% hardwood pulp as raw materials, mixing the pulp with a beating degree of 45 DEG SR, adding graphene aqueous pulp with the relative absolute dry fiber amount of 0.5%, urea formaldehyde resin with the relative absolute dry fiber amount of 2.0% and cationic starch with the relative absolute dry fiber amount of 2% into the pulp, and papermaking on a fourdrinier machine by taking water as a medium to obtain base paper, wherein the vehicle speed is 100 m/min;
the graphene aqueous slurry comprises: the content of effective components is 11 + -1%, and the viscosity is 2000 + -200 mpa.s.
2) Preparing a surface sizing solution: preparing glue solution with the concentration of 18% by mixing polyvinyl alcohol and nitrogen flame retardant according to the proportion of 1:4, and adding a pyrimidine antibacterial agent for mixing, wherein the adding amount of the pyrimidine antibacterial agent is 0.2% (mass percentage) of the mass of the glue solution; stirring uniformly to obtain surface sizing liquid;
the nitrogen flame retardant is a nitrogen-containing compound;
the pyrimidine antibacterial agent: the antibacterial agent is prepared by taking organic silicon as a carrier and loading various high-activity daily chemical level antibacterial agents on the carrier.
3) Application of surface sizing solution: coating the surface sizing solution on the base paper in a double-sided coating mode, and performing double-sided coating by using a scraper, wherein the coating weight is 10g/m2Drying the mixture by a drying cylinder until the moisture is 8-12%, and then calendering the mixture by a soft calender with the line pressure of 200kN/m and the hot oil temperature of 150 ℃; and obtaining the total heat exchange graphene paper film.
Example 2
A production method of a total heat exchange graphene paper film comprises the following steps:
1) manufacturing base paper: adopting 70% of softwood pulp and 30% of hardwood pulp as raw materials, adding graphene water-based slurry with the relative absolute dry fiber amount of 1%, sodium carboxymethyl cellulose with the relative absolute dry fiber amount of 0.6% and polyamide epoxy chloropropane resin with the relative absolute dry fiber amount of 2% into the slurry, and papermaking on a cylinder mould machine by taking water as a medium to obtain base paper, wherein the speed of the machine is 100 m/min;
the graphene aqueous slurry comprises: the content of effective components is 11 + -1%, and the viscosity is 2000 + -200 mpa.s.
2) Preparing a surface sizing solution: preparing 15% glue solution from starch and brominated flame retardant according to the proportion of 1:4, and adding ammonium compound for mixing; the adding amount of the ammonium compound is 0.2 percent (mass percentage) of the mass of the glue solution; stirring uniformly to obtain surface sizing liquid;
the brominated flame retardant: is a bromine-containing compound;
the ammonium compound is as follows: is a quaternary ammonium salt compound (alkyl dimethyl benzyl ammonium chloride).
3) Application of surface sizing solution: coating the surface sizing solution on the base paper in a single-side coating mode, and performing single-side coating by using a scraper, wherein the coating weight is 8g/m2Drying the paper film by a drying cylinder until the moisture is 8-12%, and performing calendaring by a super calender to obtain the full heat exchange graphene paper film, wherein the line pressure of the super calender is 200kN/m, and the temperature of hot oil is 150 ℃; and obtaining the total heat exchange graphene paper film.
Example 3
A production method of a total heat exchange graphene paper film comprises the following steps:
1) manufacturing base paper: adopting 70% of softwood pulp and 30% of hardwood pulp as raw materials, mixing the pulp with a beating degree of 55 DEG SR, adding graphene water-based pulp with the relative absolute dry fiber amount of 1.5%, sodium carboxymethyl cellulose with the relative absolute dry fiber amount of 0.7% and polyamide epoxy chloropropane resin with the relative absolute dry fiber amount of 2% into the pulp, and taking water as a medium to carry out papermaking on a fourdrinier machine to obtain base paper, wherein the vehicle speed is 100 m/min;
the graphene aqueous slurry comprises: the content of effective components is 11 + -1%, and the viscosity is 2000 + -200 mpa.s.
2) Preparing a surface sizing solution: preparing glue solution with the concentration of 16% from polyvinyl alcohol and a phosphorus flame retardant according to the proportion of 1:5, and adding an organic bromine compound for mixing; the adding amount of the organic bromine compound is 0.2 percent (mass percentage) of the mass of the glue solution; stirring uniformly to obtain surface sizing liquid;
the phosphorus flame retardant is a phosphorus-containing compound;
the organic bromine compound is: the main component is 2, 2-dibromo-cyanoacetamide.
3) Application of surface sizing solution: coating surface sizing solution on the base paper in a spraying way, wherein the spraying amount is 9g/m2Drying the mixture by a drying cylinder until the moisture is 8-12%, and then calendering the mixture by a soft calender with the line pressure of 200kN/m and the hot oil temperature of 150 ℃; and obtaining the total heat exchange graphene paper film.
Example 4
A production method of a total heat exchange graphene paper film comprises the following steps:
1) manufacturing base paper: adopting 70% softwood pulp and 30% hardwood pulp as raw materials, mixing the pulp with a beating degree of 50 DEG SR, adding graphene aqueous pulp with the relative absolute dry fiber amount of 2%, polyacrylamide with the relative absolute dry fiber amount of 0.6% and melamine formaldehyde resin with the relative absolute dry fiber amount of 2% into the pulp, and papermaking on a cylinder paper machine by taking water as a medium to obtain base paper, wherein the vehicle speed is 100 m/min;
the graphene aqueous slurry comprises: the content of effective components is 11 + -1%, and the viscosity is 2000 + -200 mpa.s.
2) Preparing a surface sizing solution: preparing a glue solution with the concentration of 22% by guar gum and a nitrogen flame retardant according to the proportion of 1:5, adding 0.2% (mass percent) of ammonium compound, mixing, and uniformly stirring to obtain a surface sizing solution;
the nitrogen flame retardant is a nitrogen-containing compound;
the ammonium compound is as follows: is a quaternary ammonium salt compound (alkyl dimethyl benzyl ammonium chloride).
3) Application of surface sizing solution: coating the surface sizing solution on the base paper in a double-sided coating mode, and performing double-sided coating by using a scraper, wherein the coating weight is 12g/m2Drying with a drying cylinder until the water content is 8-12%, and passing throughCalendering by a super calender, wherein the line pressure of the super calender is 200kN/m, and the temperature of hot oil is 150 ℃; and obtaining the total heat exchange graphene paper film.
Example 5
A production method of a total heat exchange graphene paper film comprises the following steps:
1) manufacturing base paper: 70% of softwood pulp and 30% of hardwood pulp are used as raw materials, the beating degree of mixed pulp is 45 DEG SR, melamine formaldehyde resin with the relative absolute dry fiber amount of 2% is added into the pulp, and paper making is carried out on a fourdrinier machine by taking water as a medium to obtain base paper, wherein the speed of the machine is 80 m/min.
2) Preparing a surface sizing solution: preparing glue solution with the concentration of 20% from polyvinyl alcohol and a phosphorus flame retardant according to the proportion of 1:7, and adding graphene water-based slurry and a pyrimidine antibacterial agent for mixing; the addition amount of the graphene water-based slurry is 1.2 percent (mass percentage) of the mass of the glue solution, and the addition amount of the pyrimidine antibacterial agent is 0.2 percent (mass percentage) of the mass of the glue solution; stirring uniformly to obtain surface sizing liquid;
the phosphorus flame retardant is a phosphorus-containing compound;
the graphene aqueous slurry comprises: the content of effective components is 11 +/-1%, and the viscosity is 2000 +/-200 mpa.s;
the pyrimidine antibacterial agent: the antibacterial agent is prepared by taking organic silicon as a carrier and loading various high-activity daily chemical level antibacterial agents on the carrier.
3) Application of surface sizing solution: the surface sizing solution is dipped on the base paper by adopting a surface sizing mode, and the surface sizing method adopts a two-roller surface sizing machine for sizing, wherein the pressure of a sizing roller is 2.5-3.5kg/m2The sizing amount is 11g/m2Drying the paper film by a drying cylinder until the moisture is 8-12%, and calendering the paper film by a soft calender to obtain the full heat exchange graphene paper film, wherein the line pressure of the soft calender is 200kN/m, and the temperature of hot oil is 150 ℃; and obtaining the total heat exchange graphene paper film.
Example 6
A production method of a total heat exchange graphene paper film comprises the following steps:
1) manufacturing base paper: 70% of softwood pulp and 30% of hardwood pulp are used as raw materials, the beating degree of mixed pulp is 50 DEG SR, polyamide epoxy chloropropane resin with the relative absolute dry fiber amount of 2% is added into the pulp, and the raw paper is made on a cylinder paper machine by taking water as a medium, wherein the speed of the machine is 90 m/min.
2) Preparing a surface sizing solution: preparing a glue solution with the concentration of 18% by using starch and a nitrogen flame retardant according to the proportion of 1:7, and adding graphene water-based slurry and an organic bromine compound for mixing; the addition amount of the graphene aqueous slurry is 2.4 percent (mass percentage) of the mass of the glue solution, and the addition amount of the organic bromine compound is 0.2 percent (mass percentage) of the mass of the glue solution; stirring uniformly to obtain surface sizing liquid;
the nitrogen flame retardant is a nitrogen-containing compound;
graphene aqueous slurry: the content of effective components is 11 +/-1%, and the viscosity is 2000 +/-200 mpa.s;
the organic bromine compound is: the main component is 2, 2-dibromo-cyanoacetamide.
3) Application of surface sizing solution: coating surface sizing solution on base paper in a spraying manner, wherein the spraying amount is 10g/m2Drying the mixture by a drying cylinder until the moisture is 8-12%, and then calendering the mixture by a super calender, wherein the line pressure of the super calender is 200kN/m, and the temperature of hot oil is 150 ℃; and obtaining the total heat exchange graphene paper film.
And (3) performance testing:
the quantitative, tightness, dry tensile strength, wet tensile strength, air permeability and moisture permeability of the total heat exchange paper of comparative example 1 and the total heat exchange graphene paper films of examples 1 to 6 obtained above were tested in a detection environment at a temperature of 23 ℃ and a humidity of 50% RH, and after the total heat exchange paper and the total heat exchange graphene paper films were fabricated into a total heat exchanger core, sensible heat efficiency, wet efficiency and enthalpy efficiency of a fresh air system using the total heat exchanger core were tested, and comparison of the obtained test results with target values is shown in table 1.
TABLE 1
Figure 27135DEST_PATH_IMAGE001
As can be seen from Table 1, inventive example 1And 6, the performance indexes of the total heat exchange graphene paper film obtained by production, such as tightness, air permeability, moisture permeability, sensible heat efficiency, wet efficiency, break efficiency and the like, are superior to those of the comparative example 1. The total heat exchange graphene paper film ration is 40-50 g/m2Tightness of 0.97-1.0 g/cm3Dry tensile strength of 3.42-4.26KN/m, wet tensile strength of 1.11-1.40KN/m, air permeability of 0.10-0.12 um/pa.s, moisture permeability of 1100-2.24h。
Test results show that the total heat exchange graphene paper film produced by the method has high tightness, extremely low air permeability and high moisture permeability; the total heat exchange graphene paper film is manufactured into a total heat exchanger core, the sensible heat efficiency of a fresh air system adopting the total heat exchanger core is 70-78%, the wet efficiency is 70-80%, and the break efficiency is 70-79%.
The total heat exchange graphene paper film produced by the method has high effective air exchange rate, the effective air exchange rate of a plate-frame type fresh air system reaches more than 94%, and the effective air exchange rate of a corrugated type fresh air system reaches more than 97%.
Except for special description, the percentages are mass percentages, and the proportions are mass ratios.
Although the embodiments of the present invention have been described in detail, the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.

Claims (10)

1. A production method of a total heat exchange graphene paper film is characterized by comprising the following steps: comprises the steps of manufacturing raw paper, preparing surface sizing solution and coating the surface sizing solution; manufacturing the base paper: preparing plant fiber slurry, and papermaking on a rotary screen or a fourdrinier machine to obtain base paper; the beating degree of the plant fiber pulp is 30-70 degrees SR, and the papermaking speed is 50-100 m/min.
2. The production method of the total heat exchange graphene paper membrane according to claim 1, characterized in that: preparing a surface sizing solution: mixing high molecular polymer and flame retardant to prepare glue solution, and adding an antibacterial agent into the glue solution; the mass ratio of the high molecular polymer to the flame retardant is 1: 4-10; the addition of the antibacterial agent is 0.15-0.3% of the glue solution; the concentration of the surface sizing liquid is 10-40%.
3. The production method of the total heat exchange graphene paper membrane according to claim 1, characterized in that: the production method comprises the following steps: adding graphene aqueous slurry into plant fiber slurry in the base paper making step, wherein the addition amount is 0.5-3% of the relative absolute dry fiber amount; or adding graphene aqueous slurry into the glue solution in the step of preparing the surface sizing solution, wherein the addition amount is 3-20% of the mass of the glue solution.
4. The production method of the total heat exchange graphene paper film according to claim 3, characterized in that: the graphene aqueous slurry comprises: the content of the effective component is 5-15%, and the viscosity is 1000-6000 mpa.s.
5. The production method of the total heat exchange graphene paper membrane according to claim 1, characterized in that: the application surface sizing solution: surface sizing is carried out on the base paper to obtain a full heat exchange graphene paper film; the sizing mode is one of dipping, single-side coating, double-side coating and spraying.
6. The production method of the total heat exchange graphene paper membrane according to claim 1, characterized in that: the application surface sizing solution: after surface sizing, the paper is calendered with a soft or supercalender.
7. The production method of the total heat exchange graphene paper film according to claim 6, characterized in that: and (3) calendering: the line pressure is 60-300kN/m, and the hot oil temperature is 100-200 ℃.
8. The production method of the total heat exchange graphene paper membrane according to claim 5, characterized in that: the application surface sizing solution: the coating weight of the glue solution is 5-15g/m2Drying the coated paper by a drying cylinder until the water content is 8-12%.
9. The production method of the total heat exchange graphene paper membrane according to claim 1, characterized in that: the plant fiber slurry: the mass ratio of imported softwood pulp to hardwood pulp is (50-100%): 0-50%);
adding at least one of polyacrylamide, cationic starch and sodium carboxymethyl cellulose into the paper pulp; the addition amount is 2-5% of the relative absolute dry fiber amount.
10. The production method of the total heat exchange graphene paper membrane according to claim 1, characterized in that: manufacturing the base paper: at least one of urea-formaldehyde resin, polyamide epichlorohydrin resin, melamine formaldehyde resin and polyethyleneimine is added into the pulp, and the addition amount is 2-5% of the absolute dry fiber amount.
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104324554A (en) * 2014-10-29 2015-02-04 天津唯能环境科技有限公司 High-thermal conductivity graphene composite heat conducting filter material
CN110485202A (en) * 2019-08-27 2019-11-22 中轻特种纤维材料有限公司 A kind of production method of Total heat exchange paper

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104324554A (en) * 2014-10-29 2015-02-04 天津唯能环境科技有限公司 High-thermal conductivity graphene composite heat conducting filter material
CN110485202A (en) * 2019-08-27 2019-11-22 中轻特种纤维材料有限公司 A kind of production method of Total heat exchange paper

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
刘全校: "《包装材料成型加工技术》", 31 January 2017, 文化发展出版社 *

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