WO2021229867A1 - 調湿材 - Google Patents

調湿材 Download PDF

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Publication number
WO2021229867A1
WO2021229867A1 PCT/JP2021/003849 JP2021003849W WO2021229867A1 WO 2021229867 A1 WO2021229867 A1 WO 2021229867A1 JP 2021003849 W JP2021003849 W JP 2021003849W WO 2021229867 A1 WO2021229867 A1 WO 2021229867A1
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WO
WIPO (PCT)
Prior art keywords
humidity control
resin
control material
material according
humidity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2021/003849
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
恭子 松浦
勇佑 清水
豪 鎌田
哲也 井出
奨 越智
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sharp Corp filed Critical Sharp Corp
Priority to US17/924,302 priority Critical patent/US20230182111A1/en
Priority to JP2022522513A priority patent/JP7344377B2/ja
Priority to CN202180034976.9A priority patent/CN115551617A/zh
Publication of WO2021229867A1 publication Critical patent/WO2021229867A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
    • B01J20/26—Synthetic macromolecular compounds
    • B01J20/261—Synthetic macromolecular compounds obtained by reactions only involving carbon to carbon unsaturated bonds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/26—Drying gases or vapours
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
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    • B01D53/26—Drying gases or vapours
    • B01D53/28—Selection of materials for use as drying agents
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    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
    • B01J20/046—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium containing halogens, e.g. halides
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Definitions

  • Patent Document 1 describes an example of a humidity control liquid. With the humidity control liquid described in Patent Document 1, the speed of humidity control may not be sufficiently increased.
  • the main object of the present disclosure is to provide a humidity control material having a high humidity control rate.
  • the humidity control material includes a resin material and a humidity control liquid.
  • the resin material contains a resin.
  • the humidity control liquid is impregnated with the resin.
  • the humidity control liquid absorbs or releases moisture.
  • FIG. 3 is a schematic cross-sectional view taken along the line VI-VI.
  • FIG. 1 is a schematic perspective view of the humidity control material 1 in the present embodiment. As shown in FIG. 1, the humidity control material 1 has a rectangular sheet shape in a plan view.
  • the humidity control material 1 includes a resin material and a humidity control liquid.
  • the resin material includes a resin and a carrier.
  • the carrier carries a resin.
  • the carrier has a function of maintaining the shape of the humidity control material 1.
  • the shape of the carrier substantially determines the shape of the humidity control material 1.
  • the shape of the carrier and the shape of the humidity control material 1 are substantially the same. Therefore, the carrier is in the form of a sheet.
  • the shape of the carrier can be determined according to the desired shape of the humidity control material 1 (for example, granular or block-shaped).
  • the carrier may be, for example, a porous body having open cells.
  • the porous body may be, for example, a non-woven fabric, a woven fabric, a foam, or the like.
  • the carrier may be flexible.
  • the carrier may be deformable. In other words, the carrier may be able to be held in any shape (bent shape, curved shape, etc.).
  • a resin is supported on the carrier.
  • the resin is preferably a water-absorbent resin.
  • the resin is preferably a resin that can be impregnated with a humidity control liquid.
  • the resin may be an ionic resin or a nonionic resin.
  • the ionic resin include alkali metal salts of polyacrylic acid, starch-acrylate graft polymers and the like.
  • Specific examples of the alkali metal salt of polyacrylic acid include sodium polyacrylate and the like.
  • non-ionic resin examples include vinyl acetate copolymer, maleic anhydride copolymer, polyvinyl alcohol, polyalkylene oxide and the like.
  • the humidity control liquid is impregnated with the resin contained in the resin material.
  • the amount of the humidity control liquid impregnated in the resin is preferably 1 part by weight or more and 1000 parts by weight or less with respect to 100 parts by weight of the resin.
  • the humidity control liquid is a liquid that releases or absorbs water.
  • the humidity control liquid is a liquid that absorbs moisture when the relative humidity is higher than the predetermined humidity zone and releases the moisture when the relative humidity is lower than the predetermined humidity zone.
  • the humidity control liquid may be impregnated not only with the resin but also with the carrier supporting the resin.
  • humidity control means adjusting the relative humidity so as to approach a predetermined humidity range. Specifically, for example, assuming that 50% RH is a predetermined relative humidity, when the relative humidity is higher than 50% RH, the humidity control material absorbs (absorbs) moisture and the relative humidity is higher than 50% RH. When low, the humidity control material releases (releases) moisture.
  • a given relative humidity zone correlates with the material of the humidity control material.
  • a predetermined relative humidity zone correlates with the water content in the humidity control liquid.
  • the predetermined humidity zone may be, for example, 20% RH or more and 80% RH or less.
  • the humidity control liquid preferably contains a polyhydric alcohol and a metal salt.
  • polyhydric alcohol examples include glycerin, propanediol, butanediol, pentanediol, trimethylolpropane, butanetriol, ethylene glycol, diethylene glycol, triethylene glycol and the like. Among them, a polyhydric alcohol having three or more hydroxyl groups such as glycerin is more preferably used.
  • the polyhydric alcohol may constitute a dimer or a polymer.
  • the humidity control liquid may contain only one kind of polyhydric alcohol, or may contain two or more kinds of polyhydric alcohols.
  • the metal salt contained in the humidity control liquid preferably contains an alkali metal element and a halogen element.
  • the humidity control liquid preferably contains a halide of an alkali metal element.
  • metal salts containing alkali metal elements and halogen elements include calcium chloride, lithium chloride, magnesium chloride, potassium chloride, sodium chloride, zinc chloride, aluminum chloride, lithium bromide, calcium bromide, and bromide. Examples thereof include potassium, sodium hydroxide, sodium pyrrolidone carboxylate and the like. Of these metal salts, only one kind of metal salt may be used, or a plurality of kinds of metal salts may be used. Among them, the metal salt preferably used is lithium chloride.
  • the humidity control liquid may contain a metal salt as a solid, or may contain a metal salt in a state of being dissolved in a solvent such as polyhydric alcohol.
  • the concentration of the metal salt in the humidity control liquid is, for example, preferably 1 wt% or more and 50 wt% or less, and more preferably 5 wt% or more and 20 wt% or less.
  • the humidity control liquid may further contain substances other than the above-mentioned polyhydric alcohols and metal salts.
  • the humidity control liquid may contain, for example, water, a ketone, an organic solvent such as an amide group-containing solvent, a saccharide, a moisturizer, or the like.
  • organic solvent having an amide group examples include formamide, acetamide and the like.
  • saccharides include sucrose, pullulan, glucose, xylose, fructose, mannitol, sorbitol and the like.
  • moisturizer examples include 2-methacryloyloxyethyl phosphorylcholine (MPC), betaine, hyaluronic acid, collagen and the like.
  • MPC 2-methacryloyloxyethyl phosphorylcholine
  • betaine betaine
  • hyaluronic acid collagen and the like.
  • the humidity control material 1 further includes an indicator.
  • the indicator changes color based on the amount of water in the humidity control liquid.
  • the humidity control material 1 is provided with an indicator, the color of the humidity control material 1 may change due to a change in the water content in the humidity control liquid as the relative humidity changes. Therefore, the change in relative humidity can be confirmed by confirming the color of the humidity control material 1.
  • the indicator may be dissolved in, for example, a humidity control liquid.
  • the indicator is not particularly limited, but may be a pH indicator having reversibility, cobalt chloride, or the like.
  • Preferred pH indicators include, for example, methyl purple, methyl yellow, bromophenol blue, congo red, methyl orange, bromocresol green, methyl red, litmus, bromocresol purple, bromothymol blue, phenol red, timol blue, phenol.
  • Examples thereof include phthalein, a trialmethane derivative, a fluorane derivative, a pyrazolone derivative, an azo derivative, and a xanthene derivative.
  • the humidity control material 1 may include one type of indicator, but it is preferable that the humidity control material 1 contains a plurality of types of indicators.
  • the plurality of types of indicators include a plurality of types of indicators having different pH at which the color changes. In this case, it is possible to increase the variation of the color that changes with the change in the pH of the humidity control liquid. Therefore, it is possible to confirm the relative humidity more strictly.
  • the humidity control material when it is desired to allow the humidity control material to absorb water, it is preferable to increase the content of the humidity control liquid in the humidity control material from the viewpoint of increasing the amount of water that can be absorbed. Therefore, from the viewpoint of increasing the amount of water that can be absorbed, it is preferable to use the humidity control liquid alone.
  • the humidity control liquid since the humidity control liquid is a liquid, it is difficult to sufficiently increase the ratio of the surface area to the volume. Therefore, when the humidity control liquid is used as a single substance, it is difficult to sufficiently increase the humidity control speed.
  • the resin contained in the resin material is impregnated with the humidity control liquid. Therefore, it is possible to realize the humidity control material 1 having a high ratio of the surface area to the volume. Therefore, the rate of absorption or release of water can be increased. Therefore, it is possible to provide the humidity control material 1 having a high humidity control rate.
  • the resin contained in the resin material is supported on a sheet-shaped carrier. Therefore, for example, the ratio of the surface area to the volume of the humidity control material 1 can be made higher than in the case where the carrier is a sphere. Therefore, it is possible to realize the humidity control material 1 having a higher humidity control rate.
  • the carrier is made of a non-woven fabric or a woven fabric, the carrier can be provided with flexibility. Therefore, it is possible to realize a humidity control material that can be deformed into various shapes.
  • the carrier is composed of a porous body such as a foaming agent, the rigidity of the carrier is high. Therefore, it is possible to realize a humidity control material having excellent shape stability.
  • the resin is a water-absorbent resin. Therefore, the humidity control liquid can be suitably impregnated into the resin.
  • the resin contains a nonionic resin.
  • the resin contains an ionic resin.
  • the humidity control material 1 has a carrier
  • this disclosure is not limited to this.
  • the humidity control material does not have to have a carrier.
  • FIG. 2 is a schematic front view of the humidity control material 1a according to the second embodiment.
  • the humidity control material 1a shown in FIG. 2 does not have a carrier.
  • the humidity control material 1a is composed of a humidity control liquid and a resin material impregnated with an indicator. For example, by using a resin material that can retain its shape when it is not supported on a carrier, the ratio of the surface area to the volume can be increased even in the humidity control material 1a that does not have a carrier. Therefore, the humidity control material 1a having a high humidity control rate can be realized.
  • the humidity control material 1a in this embodiment is granular.
  • the shape of the resin material having no carrier is not particularly limited to the granular shape.
  • the resin material having no carrier may be, for example, a block shape, a sheet shape, or the like.
  • the resin material, humidity control liquid, and indicator in the present embodiment are substantially the same as those in the first embodiment. Therefore, the description regarding the resin material, the humidity control liquid, and the indicator in the first embodiment is incorporated in the present embodiment.
  • FIG. 3 is a schematic cross-sectional view of the humidity control material 1b according to the third embodiment.
  • the plurality of humidity control materials 1b may be arranged on the base material 5 at intervals from each other.
  • the base material 5 may or may not have flexibility.
  • the base material 5 may be a porous body such as a resin material, a glass material, a ceramic material, paper, or wood.
  • the shape of the base material 5 is not particularly limited.
  • the base material 5 may have, for example, a flat plate shape, a curved plate shape, a bellows shape, or the like.
  • the base material 5 may be a casing for accommodating the humidity control material 1b, or may be a frame such as a frame.
  • the base material 5 may have a tubular shape capable of accommodating the humidity control material 1b inside, for example.
  • the humidity control material 1b may be easily fixed. Further, for example, by using the flexible base material 5, it may be easy to arrange the humidity control material 1b in spaces having various shapes.
  • FIG. 4 is a schematic cross-sectional view of the humidity control material 1c according to the second embodiment.
  • the humidity control material may be, for example, a curved plate or the like.
  • the humidity control material 1c is corrugated in the side view.
  • the corrugated humidity control material 1c is arranged between the first base material 5a and the second base material 5b.
  • the surface area of the humidity control material 1c per unit volume can be increased. Therefore, a higher humidity control rate can be realized.
  • FIG. 5 is a schematic perspective view of the humidity control material 1d according to the fifth embodiment.
  • FIG. 6 is a schematic cross-sectional view taken along the line VI-VI.
  • the humidity control material 1d has the humidity control material 1 described in the first embodiment and the indicated portion 6.
  • the indicate portion 6 is arranged on the upper surface of the humidity control material 1.
  • the indicated portion 6 is smaller than the humidity control material 1.
  • the shape of the indicated portion 6 is not particularly limited, but is rectangular.
  • the indicated portion 6 includes a transparent film 7 and a humidity control material 1e.
  • the humidity control material 1e is arranged in the transparent film 7. That is, the humidity control material 1e is sealed with the transparent film 7.
  • the transparent film 7 is a film having moisture permeability and transparency.
  • the transparent film 7 may be made of, for example, polyethylene, polypropylene, polyethylene terephthalate, polystyrene or the like.
  • the humidity control material 1e does not have a carrier as in the second embodiment. Specifically, the humidity control material 1e has a resin material, a humidity control liquid, and an indicator.
  • the resin in the humidity control material 1, the resin is supported on the carrier (nonwoven fabric), but the resin of the resin material 1e arranged on the indicated portion 6 is not supported on the carrier.
  • the resin material 1e is arranged in the transparent film 7 and is visible. Therefore, it is easy to confirm the color of the indicator contained in the resin material 1e.
  • the humidity control material including the indicator has been described.
  • the humidity control material may not contain, for example, an indicator.

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  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Ceramic Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Drying Of Gases (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
PCT/JP2021/003849 2020-05-14 2021-02-03 調湿材 Ceased WO2021229867A1 (ja)

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US17/924,302 US20230182111A1 (en) 2020-05-14 2021-02-03 Humidity controlling material
JP2022522513A JP7344377B2 (ja) 2020-05-14 2021-02-03 調湿材
CN202180034976.9A CN115551617A (zh) 2020-05-14 2021-02-03 调湿材料

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JPWO2023100823A1 (https=) * 2021-11-30 2023-06-08
WO2023112402A1 (ja) * 2021-12-17 2023-06-22 シャープ株式会社 調湿シート
WO2023119722A1 (ja) * 2021-12-23 2023-06-29 シャープ株式会社 調湿材
WO2026004027A1 (ja) * 2024-06-27 2026-01-02 株式会社ホリケン 多孔質材とヒアルロン酸、ポリビニルアルコールによる結露停止材料及びスポンジによる結露停止部材の製造方法
WO2026004028A1 (ja) * 2024-06-27 2026-01-02 株式会社ホリケン 多孔質材とヒアルロン酸、ポリビニルアルコールによる結露停止材料及びスポンジによる結露停止部材の製造方法

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JP7344377B2 (ja) 2023-09-13

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