CN111749049A - Anhydrous humidifying device and preparation method and application thereof - Google Patents
Anhydrous humidifying device and preparation method and application thereof Download PDFInfo
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- CN111749049A CN111749049A CN202010589403.XA CN202010589403A CN111749049A CN 111749049 A CN111749049 A CN 111749049A CN 202010589403 A CN202010589403 A CN 202010589403A CN 111749049 A CN111749049 A CN 111749049A
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
- B31D3/00—Making articles of cellular structure, e.g. insulating board
- B31D3/02—Making articles of cellular structure, e.g. insulating board honeycombed structures, i.e. the cells having an essentially hexagonal section
- B31D3/0292—Making articles of cellular structure, e.g. insulating board honeycombed structures, i.e. the cells having an essentially hexagonal section involving auxiliary operations, e.g. expanding, moistening, glue-applying, joining, controlling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
- B31F1/20—Corrugating; Corrugating combined with laminating to other layers
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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
- 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
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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
- 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
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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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/66—Salts, e.g. alums
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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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/71—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes
- D21H17/74—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes of organic and inorganic material
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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
- 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
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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
- 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
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F6/00—Air-humidification, e.g. cooling by humidification
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/54—Free-cooling systems
Abstract
The invention provides a water-free humidifying device, and belongs to the technical field of air conditioner humidifying devices. The anhydrous humidifying device provided by the invention comprises base paper made of organic fiber materials and moisture absorbing and releasing agents loaded on the surface and inside of the base paper; the basis weight of the base paper is 10-200 g/m2The strength is more than or equal to 1.5 kN/m; the moisture absorbing and releasing agent is a water-soluble polymer and a water-soluble inorganic salt; the shape of the anhydrous humidifying device is corrugated or honeycomb. The invention uses the water-soluble polymer and the water-soluble inorganic salt as the moisture absorbing and releasing agent, utilizes the moisture absorption performance of the water-soluble inorganic salt and the humidity conducting performance of the water-soluble polymer, can ensure that the moisture absorbing and releasing device has good moisture absorbing and releasing efficiency and humidifying capacity, and the moisture absorbing and releasing agent is loaded on the surface and the inside of the base paper, can not be blown away by wind, and is safe and environment-friendly when in use.
Description
Technical Field
The invention relates to the technical field of air conditioner humidifying devices, in particular to a waterless humidifying device and a preparation method and application thereof.
Background
With the development of economy and the improvement of the living standard of people, more and more air conditioners are introduced into the daily life of people. However, when the air conditioner is used, the indoor humidity is lowered regardless of whether cooling or heating is performed. The low indoor air humidity not only can cause the excessive loss of human body moisture to cause skin chap and dry mouth and tongue, but also can cause the increase of dust and suspended particles, thus being not beneficial to human health.
The existing air conditioning humidifying methods comprise a water humidifying method and a water-free humidifying method. The water adding method is provided with the circulating water tank in the air conditioner, so that the air conditioner is high in cost, a user is required to communicate a tap water pipeline and replace water automatically, and the use is complicated. The anhydrous humidifying method uses the moisture in the outdoor air as a humidifying water source, and the relative humidity in a room is improved through a humidifying device. For the moisture-free humidifying device, CN200410025028.7 discloses a substrate pressed by inorganic fibers, silica gel is generated on the surface of the substrate, the silica gel is used for absorbing moisture in the air, and the silica gel is heated to release moisture. However, the moisture absorption and release efficiency of the humidifying device is low, and the inorganic fibers or silica gel particles are easily blown out in the air through hot air, which causes damage to human bodies.
Disclosure of Invention
In view of this, the present invention aims to provide an anhydrous humidifying device, a manufacturing method thereof and an application thereof, wherein the anhydrous humidifying device provided by the present invention is safe and environment-friendly, and has high moisture absorption and desorption efficiency and high humidifying capability.
In order to achieve the purpose of the invention, the invention provides the following technical scheme:
the invention provides a waterless humidifying device, which comprises base paper made of organic fiber materials and moisture absorbing and releasing agents loaded on the surface and inside of the base paper;
the basis weight of the base paper is 10-200 g/m2The strength is more than or equal to 1.5 kN/m;
the moisture absorbing and releasing agent is a water-soluble polymer and a water-soluble inorganic salt;
the shape of the anhydrous humidifying device is corrugated or honeycomb.
Preferably, the water-soluble polymer is a polyhydric hydroxyl polymer; the water-soluble inorganic salt is one or more of water-soluble salt of lithium, water-soluble salt of sodium, water-soluble salt of ammonium, water-soluble salt of potassium, water-soluble salt of calcium, water-soluble salt of magnesium, water-soluble salt of zinc, water-soluble salt of aluminum, water-soluble salt of copper, water-soluble salt of iron and water-soluble salt of cesium;
the moisture absorbing and releasing agent comprises 10-90% of water-soluble polymer by mass and the balance of water-soluble inorganic salt; the mass of the moisture absorbing and releasing agent is 5-100% of that of the base paper.
Preferably, the polyhydric hydroxyl polymer is one or more of polyvinyl alcohol, chitosan quaternary ammonium salt, hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, polyether polyol and polyester polyol.
Preferably, the base paper is made from raw materials including organic fibers and reinforcing aids; the organic fiber is natural and/or synthetic organic fiber; the reinforcing additive is one or more of polyamide epichlorohydrin, polyacrylamide and melamine formaldehyde resin; the mass of the reinforcing auxiliary agent is 0.1-1.0% of the mass of the absolutely dry fiber.
Preferably, the raw material also comprises latex, wherein the latex is one or more of acrylic latex, vinyl acetate latex, styrene-butadiene latex, styrene-acrylic latex and waterborne polyurethane latex;
the mass of the latex is 0.5-5% of the mass of the absolutely dry fiber.
Preferably, the height of the corrugated or honeycomb-shaped layer is 1-10 mm independently.
The invention provides a preparation method of the anhydrous humidifying device, which comprises the following steps:
(1) providing base paper made of organic fiber;
(2) mixing a water-soluble polymer, a water-soluble inorganic salt and water to obtain a moisture absorbing and releasing agent aqueous solution;
(3) enabling the base paper to adsorb, absorb and release the moisture agent aqueous solution, drying and forming the base paper into a corrugated shape or a honeycomb shape in sequence to obtain the anhydrous humidifying device; or forming the base paper into corrugated or honeycomb shape, absorbing and desorbing the water solution of the moisture agent by the formed base paper, and drying to obtain the anhydrous humidifying device;
the steps (1) and (2) have no requirement of time sequence.
Preferably, the method for providing the base paper in the step (1) comprises the following steps:
(a) mixing fibers with water, and pulping to obtain fiber pulp;
(b) mixing the fiber slurry with the rest raw materials to obtain mixed slurry;
(c) and manufacturing the mixed slurry to obtain base paper.
Preferably, the water-soluble polymer in the moisture absorbing and releasing agent aqueous solution accounts for 0.5-30% by mass, and the water-soluble inorganic salt accounts for 0.5-50% by mass.
The invention also provides the application of the anhydrous humidifying device in air conditioning humidification.
The invention provides a waterless humidifying device, which comprises base paper made of organic fiber materials and moisture absorbing and releasing agents loaded on the surface and inside of the base paper; the basis weight of the base paper is 10-200 g/m2The strength is more than or equal to 1.5 kN/m; the moisture absorbing and releasing agent is water-soluble polymer and water-soluble inorganic salt(ii) a The shape of the anhydrous humidifying device is corrugated or honeycomb. The water-soluble polymer and the water-soluble inorganic salt are used as the moisture absorbing and releasing agent, wherein the water-soluble polymer contains polar groups capable of absorbing water molecules, the water-soluble polymer has the performance of conducting humidity, the inorganic salt has stronger polarity and can absorb water vapor to form crystal water, the water-free humidifying device has good moisture absorbing and releasing efficiency and humidifying capacity under the combined action of the water-soluble polymer and the inorganic salt, and the moisture absorbing and releasing agent is loaded on the surface and the inside of the base paper, has high binding firmness, cannot be blown away by wind, and is safe and environment-friendly in use. The shape of the anhydrous humidifying device is corrugated or honeycomb-shaped, the specific surface area is large, and the moisture absorption and release efficiency is improved. Meanwhile, the anhydrous humidifying device is low in cost, good in folding resistance and high in strength. The embodiment result shows that the moisture absorption rate of the waterless humidifying device can reach 17.76% within 120min, the moisture release rate can reach 100% within 20min at 75 ℃, the humidifying capacity can reach 167mL/h, and the waterless humidifying device has high moisture absorption and release efficiency and humidifying capacity.
The invention provides a preparation method of a waterless humidifying device, which is simple to operate and easy to realize industrial mass production.
Drawings
Fig. 1 is a schematic structural diagram of a corrugated anhydrous humidifying device.
Detailed Description
The invention provides a waterless humidifying device, which comprises base paper made of organic fiber materials and moisture absorbing and releasing agents loaded on the surface and inside of the base paper;
the basis weight of the base paper is 10-200 g/m2The strength is more than or equal to 1.5 kN/m;
the moisture absorbing and releasing agent is a water-soluble polymer and a water-soluble inorganic salt;
the shape of the anhydrous humidifying device is corrugated or honeycomb.
The invention provides a waterless humidifying device which comprises base paper made of organic fiber materials, wherein corrugated or honeycomb paper is used as a base body. In the invention, the basis weight of the base paper is 10-200 g/m2Preferably 50 to 150g/m2(ii) a The strength of the base paper is more than or equal to 1.5kN/m, and the base paper is excellentMore than or equal to 2kN/m is selected, and the thickness of the base paper is preferably 0.05-0.25 mm. In the invention, the shape of the anhydrous humidifying device is corrugated or honeycomb-shaped, and the height of the corrugated or honeycomb-shaped layer is preferably 1-10 mm, and more preferably 1-2 mm. The invention has no special requirements on the size specification of the anhydrous humidifying device and can be designed correspondingly according to the requirements. When the shape of the anhydrous humidifying device is corrugated, the schematic structure is shown in fig. 1.
In the present invention, the base paper made of an organic fiber material is preferably produced from a raw material including an organic fiber and a reinforcing aid by papermaking, and the fiber is preferably a natural fiber and/or a synthetic organic fiber; in the present invention, the natural fiber is preferably a softwood fiber and/or a hardwood fiber, and the synthetic organic fiber is preferably one or more of a polypropylene fiber, a polyethylene fiber and a polyethylene terephthalate (PET) fiber.
In the invention, the reinforcing additive is preferably one or more of polyamide epichlorohydrin, polyacrylamide and melamine formaldehyde resin; the mass of the reinforcing auxiliary agent is preferably 0.1-1.0% of the mass of the absolutely dry fiber, and more preferably 0.5%. In the present invention, the reinforcing aid functions to improve the strength of the base paper.
In the invention, the raw materials for preparing the base paper preferably further comprise latex, and the latex is preferably one or more of acrylic latex, vinyl acetate latex, styrene-butadiene latex, styrene-acrylic latex and waterborne polyurethane latex; the mass of the latex is preferably 0.5-5% of the mass of the absolutely dry fiber, and the solid content of the latex is preferably 1-2%. In the present invention, the latex serves as a reinforcement.
In the present invention, the method for preparing the base paper preferably includes the steps of:
(a) mixing fibers with water, pulping and dispersing to obtain fiber pulp;
(b) mixing the fiber slurry with the rest raw materials to obtain mixed slurry;
(c) and manufacturing the mixed slurry to obtain base paper.
The invention preferably mixes the fiber and water, and carries out pulping to obtain the fiber pulp. The invention does not require any particular mixing means, such as stirring, known to the person skilled in the art. The present invention preferably performs beating using a disc refiner. The invention has no special requirement on the beating degree of beating, and can be used for papermaking, and as an embodiment of the invention, the beating degree of the fiber pulp is 40-50 DEG SR. In the present invention, the mass concentration of the fiber slurry is preferably 2 to 3.5 wt%, and more preferably 2.5 to 3 wt%. In the present invention, when the kind of the fiber to be used is plural, it is preferable that each kind of the fiber is individually beaten and then mixed to obtain a fiber slurry.
After the fiber slurry is obtained, the fiber slurry is preferably mixed with the rest raw materials to obtain mixed slurry. In the present invention, the remaining raw materials preferably include a reinforcing aid, and further preferably include a reinforcing aid and a latex. In the invention, the reinforcing aid and the latex are preferably added in the form of aqueous dispersion respectively, and the invention has no special requirement on the mass concentration of the aqueous dispersion and can ensure that the reinforcing aid and the latex are uniformly dispersed.
In the present invention, the mixed slurry preferably further includes an antifoaming agent and/or a dispersing agent. According to the invention, the reinforcing auxiliary agent and the latex are preferably added, and then the defoaming agent and/or the dispersing agent are/is added, wherein the defoaming agent is preferably an organic silicon defoaming agent, and more preferably a polysiloxane type defoaming agent. The mass of the defoaming agent is preferably 0.01-0.1% of the mass of the absolutely dry fibers, and more preferably 0.05%; the dispersant is preferably one or more of carboxymethyl cellulose, polyethylene oxide, anionic polyacrylamide and cationic polyacrylamide, and in the invention, the mass of the dispersant is preferably 0.1-1.0%, and more preferably 0.05% of the mass of absolutely dry fibers. In the invention, the defoaming agent and the dispersing agent are preferably added in the form of aqueous solutions respectively, and the invention has no special requirements on the mass concentration of the defoaming agent aqueous solution and the dispersing agent aqueous solution, and ensures that the defoaming agent and the dispersing agent are completely dissolved.
The present invention does not require any particular paper-making method, and can be carried out by a paper-making method known to those skilled in the art.
The anhydrous humidifying device provided by the invention comprises moisture absorbing and releasing agents loaded on the surface and inside of the base paper. In the present invention, the moisture absorbing/releasing agent preferably has a mass of 5 to 100%, more preferably 20 to 40%, of the mass of the base paper. In the invention, the moisture absorbing and releasing agent is a water-soluble polymer and a water-soluble inorganic salt, the water-soluble polymer is preferably a polyhydric hydroxyl polymer, and more preferably one or more of polyvinyl alcohol, chitosan quaternary ammonium salt, hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, polyether polyol and polyester polyol; the present invention does not require a particular type of polyether polyol and polyester polyol, and both polyether polyols and polyester polyols well known to those skilled in the art are suitable for use in the present invention. In the invention, the water-soluble inorganic salt is preferably one or more of water-soluble salts of lithium, sodium, ammonium, potassium, calcium, magnesium, zinc, aluminum, copper, iron and cesium; as a specific example of the present invention, the water-soluble inorganic salt is one or more of lithium chloride, sodium chloride, ammonium sulfate, potassium chloride, calcium oxide, magnesium chloride, anhydrous copper sulfate, lithium fluoride, cesium fluoride, sodium sulfate, and magnesium sulfate.
In the invention, the mass percentage of the water-soluble polymer in the moisture absorbing and releasing agent is preferably 10-90%, and more preferably 40-70%; the mass percentage of the water-soluble inorganic salt is preferably 10-90%, and more preferably 30-60%. According to the invention, the water-soluble polymer and the water-soluble inorganic salt are used as the moisture absorbing and releasing agent, wherein the water-soluble polymer contains polar groups capable of absorbing water molecules, the water-soluble polymer has the performance of conducting humidity, the inorganic salt has strong polarity and can absorb water vapor to form crystal water, the water-free humidifying device has good moisture absorbing and releasing efficiency and humidifying capacity under the combined action of the water-soluble polymer and the inorganic salt, and the moisture absorbing and releasing agent is loaded on the surface and the inside of the base paper, so that the binding firmness is high, the moisture absorbing and releasing agent cannot be blown away by wind, and the moisture absorbing and.
In the invention, the base paper and the moisture absorbing and releasing agent are combined in a coating or dipping mode, so that the combination firmness of the base paper and the moisture absorbing and releasing agent can be greatly improved.
The invention provides a preparation method of an anhydrous humidifying device, which comprises the following steps:
(1) providing base paper made of organic fiber;
(2) mixing a water-soluble polymer, inorganic salt and water to obtain a moisture absorbing and releasing agent aqueous solution;
(3) enabling the base paper to adsorb, absorb and release the moisture agent aqueous solution, drying and forming the base paper into a corrugated shape or a honeycomb shape in sequence to obtain the anhydrous humidifying device; or forming the base paper into corrugated or honeycomb shape, absorbing and desorbing the water solution of the moisture agent by the formed base paper, and drying to obtain the anhydrous humidifying device;
the steps (1) and (2) have no requirement of time sequence.
In the present invention, the method for providing the base paper is the same as the above method for preparing the base paper, and is not described herein again.
The invention mixes water-soluble polymer, water-soluble inorganic salt and water to obtain the moisture absorbing and releasing agent water solution. In the invention, the water is preferably hot water at 70-100 ℃, and more preferably hot water at 80-90 ℃. In the present invention, it is preferable to dissolve the water-soluble polymer in hot water and then add the water-soluble inorganic salt to mix them. In the invention, the water-soluble polymer in the moisture absorbing and releasing agent aqueous solution is preferably 0.5-30% by mass, more preferably 5-20% by mass, and the water-soluble inorganic salt is preferably 0.5-50% by mass, more preferably 15-30% by mass.
After the base paper and the moisture absorbing and releasing agent aqueous solution are obtained, the base paper absorbs the moisture absorbing and releasing agent aqueous solution, and the base paper is dried and formed into a corrugated shape or a honeycomb shape in sequence to obtain the anhydrous humidifying device. In the present invention, the manner of adsorbing the moisture absorbing and releasing agent aqueous solution is preferably to coat the moisture absorbing and releasing agent aqueous solution on the surface of the base paper or to immerse the base paper in the moisture absorbing and releasing agent aqueous solution; when the adsorption mode is that the water solution of the moisture absorbing and releasing agent is coated on the surface of the base paper, the moisture absorbing and releasing agentThe coating weight of the coating is preferably 20 to 100g/m2(ii) a When the adsorption mode is that the base paper is immersed in the moisture absorbing and releasing agent aqueous solution, the gluing amount of the moisture absorbing and releasing agent is preferably 20-100 g/m2。
As a specific embodiment of the invention, the drying temperature is 100-110 ℃ and the drying time is 0.5-2 min. In the present invention, the forming includes pressing and cutting in sequence, and the present invention has no special requirement on the pressing method, and the base paper absorbed with the moisture absorbing and releasing agent is pressed into a corrugated shape or a honeycomb shape by using a method well known to those skilled in the art. The present invention does not require any particular cutting means, and the pressed base paper may be cut to a corresponding size using means well known to those skilled in the art.
Or, the base paper is formed into a corrugated shape or a honeycomb shape, so that the formed base paper absorbs, absorbs and releases the moisture agent aqueous solution, and the anhydrous humidifying device is obtained after drying. In the present invention, the forming method is the same as the forming method described above, and is not described herein again. In the invention, the mode that the forming base paper absorbs the moisture absorbing and releasing agent aqueous solution is preferably that the forming base paper is immersed in the moisture absorbing and releasing agent aqueous solution, and the invention has no special requirement on the dosage of the moisture absorbing and releasing agent aqueous solution and ensures that the forming base paper is completely immersed. The process of absorbing, absorbing and releasing the moisture agent water solution and drying the formed base paper is preferably repeated until the weight of the dried base paper is increased by 5-100%.
The invention also provides the application of the anhydrous humidifying device in air conditioning humidification.
The following will explain the present invention in detail by referring to the examples, but they should not be construed as limiting the scope of the present invention.
Example 1
(1) Mixing 40 parts by weight of softwood pulp (lion brand) with water, pulping by using a disc mill pulping machine to obtain softwood fiber pulp with a pulping degree of 40 DEG SR and a mass concentration of 3.0%;
mixing 60 parts by weight of hardwood pulp (parrot) with water, and pulping by using a disc refiner to obtain hardwood fiber pulp with a beating degree of 50 DEG SR and a mass concentration of 3.0%;
preparing 0.5 part by weight of polyamide epichlorohydrin resin (calculated by absolute dry weight, Hebei Jiheng auxiliary agent Co., Ltd.) into a reinforcing auxiliary agent water dispersion, and preparing 0.07 part by weight of organosilicon defoaming agent (purchased from Beijing Schauder Rad science and technology Co., Ltd.) with the model of JF-05B into a defoaming agent water solution; 0.05 weight percent of polyoxyethylene (purchased from ZiboKai far constant chemical Co., Ltd.) is prepared into a dispersant aqueous solution;
mixing the softwood fiber pulp, the hardwood fiber pulp, the reinforcing auxiliary agent aqueous dispersion, the defoaming agent aqueous solution and the dispersing agent aqueous solution to obtain mixed pulp with the solid content of 0.1 wt%, and making paper to obtain base paper, wherein the quantitative rate of the base paper is 75g/m2The thickness was 0.12mm and the strength was 2.2 kN/m.
(2) Dispersing 70 parts by weight of water-soluble chitosan (Hebei Rihua Biotech Co., Ltd.) in hot water at 80 ℃ to obtain an 8% chitosan aqueous solution;
30 parts by weight of calcium chloride (Suzhou Zhengyanghuai chemical engineering Co., Ltd.) was dissolved in the aqueous chitosan solution to obtain an aqueous solution of a moisture absorbent.
(4) Processing base paper into honeycomb shape, wherein the distance between honeycomb layers is 1mm, soaking the honeycomb base paper in a moisture absorbing and releasing agent aqueous solution, taking out the base paper, draining, and drying at 105 ℃; and repeating the soaking and drying steps until the weight of the dried base paper is increased by 30 wt%, thus obtaining the anhydrous humidifying device.
Example 2
(1) Mixing 50 parts by weight of softwood pulp (northern wood brand) with water, and pulping by using a disc mill beater to obtain softwood fiber pulp with a beating degree of 42 DEG SR and a mass concentration of 3.0%;
mixing 50 parts by weight of hardwood pulp (goldfish brand) with water, pulping by using a disc refiner to obtain hardwood fiber pulp with a beating degree of 45 DEG SR and a mass concentration of 3.0%;
preparing 0.5 part by weight of polyamide epichlorohydrin resin (calculated by absolute dry weight, Hebei Jiheng auxiliary agent Co., Ltd.) into a reinforcing auxiliary agent water dispersion, and preparing 0.07 part by weight of organosilicon defoaming agent (purchased from Beijing Schauder Rad science and technology Co., Ltd.) with the model of JF-05B into a defoaming agent water solution; 0.08 percent by weight of polyoxyethylene (purchased from Guangzhou Mingri chemical Co., Ltd.) is prepared into a dispersant aqueous solution; preparing 1% by weight of styrene-acrylic latex (purchased from Beijing Oriental chemical plant) into a latex aqueous solution;
mixing the softwood fiber pulp, the hardwood fiber pulp, the reinforcing auxiliary agent aqueous dispersion, the defoaming agent aqueous solution, the dispersing agent aqueous solution and the latex aqueous solution to obtain mixed pulp with the solid content of 0.1 wt%, and papermaking to obtain base paper, wherein the basis weight of the base paper is 100g/m2The thickness is 0.15mm and the strength is 2.0 kN/m.
(2) Dispersing 60 parts by weight of chitosan quaternary ammonium salt (Shenzhen, Dadi kang biotech Co., Ltd.) in hot water of 70 ℃ to obtain a chitosan aqueous solution with the mass concentration of 5%;
30 parts by weight of lithium chloride (Shanghai lithium industries, Ltd.) was dissolved in the aqueous solution of chitosan quaternary ammonium salt to obtain an aqueous solution of moisture absorbing/releasing agent.
(3) The base paper was coated with an aqueous solution of a moisture absorbing/releasing agent at a coating weight of 50g/m using a coater2Drying at 110 deg.C;
(4) pressing the base paper coated with the moisture absorbing and releasing agent into a corrugated shape with the layer distance of 1.2mm, and cutting to obtain the anhydrous humidifying device.
Example 3
An anhydrous humidifying device was prepared according to the method of example 1, except that the moisture absorbing and releasing agent was changed to 70 parts by weight of PVA1799 (available from china petrochemical shanghai petrochemical company, ltd.) and 30 parts by weight of ammonium sulfate (available from new materials, ltd., Qingdao, city).
Example 4
An anhydrous humidifying device was manufactured as in example 2, except that the moisture absorbing and releasing agent was changed to 20 parts by weight of PVA1799 (available from Shanghai petrochemical Co., Ltd., China) and 80 parts by weight of calcium chloride (available from Nakayasu Nakayaku Kogyo Co., Ltd., Suzhou) and the coating amount was 20g/m2。
Example 5
Mixing 100 parts by weight of softwood pulp (northern wood brand) with water, pulping by using a disc mill beater to obtain softwood fiber pulp with a beating degree of 45 DEG SR and a mass concentration of 3.0%;
0.5 part by weight of polyamide epichlorohydrin resin (calculated by absolute dry weight, Hebei Jiheng auxiliary agent Co., Ltd.) was prepared into a reinforcing auxiliary agent aqueous dispersion
Mixing the softwood fiber pulp with the enhanced additive aqueous dispersion to obtain mixed pulp with the solid content of 0.1 wt%, and papermaking to obtain base paper, wherein the quantitative amount of the base paper is 80g/m2The thickness was 0.13mm and the strength was 1.5 kN/m.
(2) Dispersing 30 parts by weight of PVA1799 (purchased from China petrochemical Shanghai petrochemical Co., Ltd.) in hot water at 80 ℃ to obtain a PVA aqueous solution with the mass concentration of 5%;
50 parts by weight of lithium chloride (Shanghai lithium industries, Ltd.) was dissolved in the aqueous solution of chitosan quaternary ammonium salt to obtain an aqueous solution of moisture absorbing/releasing agent.
(3) The base paper was coated with an aqueous solution of a moisture absorbing/releasing agent at a coating weight of 40g/m using a coater2Drying at 105 ℃;
(4) pressing the base paper coated with the moisture absorbing and releasing agent into a corrugated shape with the layer distance of 1.0mm, and cutting to obtain the anhydrous humidifying device.
Test example 1
The moisture absorption rates of the anhydrous humidification devices obtained in examples 1 to 4 at different times were tested, and the obtained results are listed in table 1;
the method for testing the moisture absorption rate comprises the following steps: firstly, drying the anhydrous humidifying device for 20min at 105 ℃ by using an air drying oven, then placing the anhydrous humidifying device in an environment with the temperature of 3-5 ℃ and the humidity of 20-30% RH for a certain time, and testing the moisture absorption rate of the anhydrous humidifying device by using a weighing method.
Table 1 moisture absorption performance of the anhydrous humidification devices obtained in examples 1 to 4
The moisture release rates of the anhydrous humidification devices obtained in examples 1 to 4 at different times were tested, and the obtained results are listed in table 2;
the testing method of the moisture release rate comprises the following steps: the anhydrous humidifying device is placed in a blast drying box, dried at 75 ℃, and tested for the moisture release rate by a weighing method.
TABLE 2 moisture releasing Properties of the anhydrous humidifying devices obtained in examples 1 to 4
The humidifying capacity of the anhydrous humidifying device obtained in examples 1 to 4 was tested, and the obtained results are listed in table 3;
TABLE 3 humidifying Capacity of Anhydrous humidifying device obtained in examples 1 to 4
| Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | |
| Humidifying capacity/mL/h | 104 | 167 | 95 | 128 | 106 |
As can be seen from tables 1 to 3, the anhydrous humidifying device provided by the invention has good moisture absorption and desorption performance and humidifying capacity.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A waterless humidifying device is characterized by comprising base paper made of organic fiber materials and moisture absorbing and releasing agents loaded on the surface and inside of the base paper;
the basis weight of the base paper is 10-200 g/m2The strength is more than or equal to 1.5 kN/m;
the moisture absorbing and releasing agent is a water-soluble polymer and a water-soluble inorganic salt;
the shape of the anhydrous humidifying device is corrugated or honeycomb.
2. The non-aqueous humidifying device of claim 1, wherein the water-soluble polymer is a polyhydric hydroxyl polymer; the water-soluble inorganic salt is one or more of water-soluble salt of lithium, water-soluble salt of sodium, water-soluble salt of ammonium, water-soluble salt of potassium, water-soluble salt of calcium, water-soluble salt of magnesium, water-soluble salt of zinc, water-soluble salt of aluminum, water-soluble salt of copper, water-soluble salt of iron and water-soluble salt of cesium;
the moisture absorbing and releasing agent comprises 10-90% of water-soluble polymer by mass and the balance of water-soluble inorganic salt; the mass of the moisture absorbing and releasing agent is 5-100% of that of the base paper.
3. The non-aqueous humidifying device of claim 2, wherein the polyhydric hydroxyl polymer is one or more of polyvinyl alcohol, chitosan quaternary ammonium salt, hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, polyether polyol and polyester polyol.
4. The non-aqueous humidifying device according to claim 1, wherein the base paper is manufactured from a raw material including an organic fiber and a reinforcing aid by papermaking; the organic fiber is natural and/or synthetic organic fiber; the reinforcing additive is one or more of polyamide epichlorohydrin, polyacrylamide and melamine formaldehyde resin; the mass of the reinforcing auxiliary agent is 0.1-1.0% of the mass of the absolutely dry fiber.
5. The non-aqueous humidifying device of claim 4, wherein the raw material further comprises latex, the latex is one or more of acrylic latex, vinyl acetate latex, styrene-butadiene latex, styrene-acrylic latex and water-based polyurethane latex;
the mass of the latex is 0.5-5% of the mass of the absolutely dry fiber.
6. The non-aqueous humidifying device of claim 1, wherein the corrugated or honeycomb layer height is 1-10 mm independently.
7. The method for preparing the anhydrous humidifying device according to any one of claims 1 to 6, which is characterized by comprising the following steps:
(1) providing base paper made of organic fiber;
(2) mixing a water-soluble polymer, a water-soluble inorganic salt and water to obtain a moisture absorbing and releasing agent aqueous solution;
(3) enabling the base paper to adsorb, absorb and release the moisture agent aqueous solution, drying and forming the base paper into a corrugated shape or a honeycomb shape in sequence to obtain the anhydrous humidifying device; or forming the base paper into corrugated or honeycomb shape, absorbing and desorbing the water solution of the moisture agent by the formed base paper, and drying to obtain the anhydrous humidifying device;
the steps (1) and (2) have no requirement of time sequence.
8. The method of manufacturing according to claim 7, wherein the method of providing the base paper in the step (1) includes the steps of:
(a) mixing fibers with water, and pulping to obtain fiber pulp;
(b) mixing the fiber slurry with the rest raw materials to obtain mixed slurry;
(c) and manufacturing the mixed slurry to obtain base paper.
9. The preparation method according to claim 7, wherein the water-soluble polymer is contained in the moisture absorbing/desorbing agent aqueous solution in an amount of 0.5 to 30% by mass, and the water-soluble inorganic salt is contained in the amount of 0.5 to 50% by mass.
10. Use of the anhydrous humidifying device according to any one of claims 1 to 6 or the anhydrous humidifying device prepared by the preparation method according to any one of claims 7 to 9 in air conditioning humidification.
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Citations (4)
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|---|---|---|---|---|
| TW500858B (en) * | 1999-06-08 | 2002-09-01 | Ind Tech Res Inst | Material of the total heat exchanger and its manufacturing method |
| CN103233396A (en) * | 2013-04-11 | 2013-08-07 | 王汉培 | Manufacturing method of high-performance core material for rotating wheel adsorption |
| CN105874295A (en) * | 2013-12-26 | 2016-08-17 | 东丽株式会社 | Method for manufacturing total heat exchanger element, and total heat exchanger element |
| CN110945310A (en) * | 2017-08-23 | 2020-03-31 | 三菱制纸株式会社 | Total heat exchange element paper and total heat exchange element |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW500858B (en) * | 1999-06-08 | 2002-09-01 | Ind Tech Res Inst | Material of the total heat exchanger and its manufacturing method |
| CN103233396A (en) * | 2013-04-11 | 2013-08-07 | 王汉培 | Manufacturing method of high-performance core material for rotating wheel adsorption |
| CN105874295A (en) * | 2013-12-26 | 2016-08-17 | 东丽株式会社 | Method for manufacturing total heat exchanger element, and total heat exchanger element |
| CN110945310A (en) * | 2017-08-23 | 2020-03-31 | 三菱制纸株式会社 | Total heat exchange element paper and total heat exchange element |
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