JPH10305209A - Production of dehumidifying element - Google Patents
Production of dehumidifying elementInfo
- Publication number
- JPH10305209A JPH10305209A JP9131677A JP13167797A JPH10305209A JP H10305209 A JPH10305209 A JP H10305209A JP 9131677 A JP9131677 A JP 9131677A JP 13167797 A JP13167797 A JP 13167797A JP H10305209 A JPH10305209 A JP H10305209A
- Authority
- JP
- Japan
- Prior art keywords
- water glass
- glass powder
- silica gel
- dehumidifying element
- fiber paper
- 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.)
- Pending
Links
Landscapes
- Drying Of Gases (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、再生除湿器や全熱
交換器に用いられる除湿素子の製造法の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a method for manufacturing a dehumidifying element used for a regenerative dehumidifier or a total heat exchanger.
【０００２】[0002]
【従来の技術】従来、除湿素子の一つとして、ガラス繊
維、セラミック繊維等の無機質繊維から作った紙または
不織布と、それを波形に成形したものとを交互に重ね合
わせて接合して構成したハニカム構造体に除湿剤を担持
したものが知られている。前記除湿剤の一つとして、シ
リカゲルを使用したものがあり、シリカゲルを担持した
ハニカム構造除湿素子の代表的なものには、ハニカム構
造体に水ガラスを含浸させ、次いで酸処理によって珪酸
アルカリを珪酸ゲルに変換した後乾燥する製造法（例え
ば、特公昭５１−３０３８４号公報参照）が知られてい
る。2. Description of the Related Art Conventionally, as one of dehumidifying elements, a paper or nonwoven fabric made of inorganic fibers such as glass fiber and ceramic fiber and a corrugated one thereof are alternately overlapped and joined. A structure in which a dehumidifying agent is carried on a honeycomb structure is known. As one of the dehumidifying agents, there is a device using silica gel. A typical example of a honeycomb structure dehumidifying element supporting silica gel is to impregnate a honeycomb structure with water glass, and then convert the alkali silicate to silicate by an acid treatment. A production method in which the gel is converted into a gel and then dried (for example, see Japanese Patent Publication No. 51-30384) is known.
【０００３】また、無機質繊維紙を使用し、除湿素子の
形状でハニカム構造体に成形する成形工程の前、または
後において無機質繊維に水ガラスを含浸して、含水量３
〜２０％の和水水ガラス状になるまで乾燥濃縮し、酸に
浸漬してシリカヒドロゲルを生成せしめ、乾燥した湿気
交換素子の製造法（特開昭６１−１０１２２８号公報参
照）などがある。In addition, before or after a forming step of forming a honeycomb structure in the form of a dehumidifying element using inorganic fiber paper, the inorganic fibers are impregnated with water glass to obtain a water content of 3%.
There is a method for producing a moisture-exchange element which is dried and concentrated until it becomes a hydrated water glass of about 20%, immersed in an acid to form a silica hydrogel, and dried (see JP-A-61-101228).
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、前述し
た除湿素子の製造法にあっては、除湿素子の形状に成形
する成形工程の前、または後において、無機質繊維紙に
水ガラスを含浸する方法をとっているため、例えば、除
湿素子の成形工程前に無機質繊維紙に水ガラスを含浸す
る場合には、水ガラスを半乾燥した状態でコルゲート加
工しなければならず、加工機に水ガラスが付着する等に
より、効率よく成形体を製造することが難しいという問
題点がある。また、ハニカム構造体成形工程後に水ガラ
スを含浸する場合には、水ガラスを多量に付着させる
と、ハニカム孔に目詰まりを生じ、また全体均一に水ガ
ラスを付着することが困難という問題がある。However, in the above-described method for manufacturing a dehumidifying element, a method of impregnating inorganic fiber paper with water glass before or after a forming step of forming into a shape of the dehumidifying element is described. For example, when impregnating inorganic fiber paper with water glass before the forming process of the dehumidifying element, the water glass must be corrugated in a semi-dry state, and the water glass adheres to the processing machine. Therefore, there is a problem that it is difficult to efficiently produce a molded body. In addition, when water glass is impregnated after the honeycomb structure forming step, if a large amount of water glass is adhered, clogging of the honeycomb holes occurs, and it is difficult to uniformly adhere the water glass as a whole. .
【０００５】本発明は、上述した従来の問題点を解消す
るためになされたものであって、従来のシリカゲル担持
除湿素子の製造工程で、水ガラスを無機質繊維紙または
そのハニカム構造体に含浸する場合、シリカゲルの原料
である水ガラスを粉末状態で無機質繊維紙に多量に、か
つ均一に塗工させることのできる、改良された除湿素子
の製造法を提供することを目的としている。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems. In a conventional manufacturing process of a silica gel-supported dehumidifying element, water glass is impregnated into inorganic fiber paper or its honeycomb structure. In this case, it is an object of the present invention to provide an improved method for producing a dehumidifying element capable of applying a large amount of water glass, which is a raw material of silica gel, to an inorganic fiber paper in a powder state and uniformly.
【０００６】[0006]
【課題を解決するための手段】本発明による除湿素子の
製造法は、水ガラス粉末、非水系有機バインダーおよび
非水系溶剤を主成分として混合して得たスラリーを無機
質繊維紙に塗工し、それを成形体に成形し、水ガラス粉
末をシリカゲルに変化させることを要旨としている。According to a method of manufacturing a dehumidifying element according to the present invention, a slurry obtained by mixing water glass powder, a non-aqueous organic binder and a non-aqueous solvent as main components is applied to inorganic fiber paper, The gist is to form it into a compact and change the water glass powder into silica gel.
【０００７】本発明の水ガラス粉末としては、１号ない
し３号の珪酸ソーダ粉末をいずれも使用することができ
る。特に結晶水を含み水に対する溶解性の良好な水ガラ
ス粉末が好ましく使用される。これらに代わる珪酸アル
カリ粉末も代替使用が可能である。水ガラス粉末の粒径
は５〜５０μｍのものが適当で、５μｍ以下では水ガラ
ス粉末は湿気を吸い、塊となり、取り扱いが困難とな
る。また５０μｍ以上ではスラリー下部に水ガラス粉末
が沈降し、均一なスラリーを得られにくい。As the water glass powder of the present invention, any of the sodium silicate powders of Nos. 1 to 3 can be used. In particular, water glass powder containing water of crystallization and having good solubility in water is preferably used. Alkali silicate powder instead of these can be used alternatively. The particle size of the water glass powder is suitably from 5 to 50 μm. If the particle size is 5 μm or less, the water glass powder absorbs moisture, becomes a lump, and becomes difficult to handle. On the other hand, if it is 50 μm or more, the water glass powder will settle at the lower part of the slurry, and it is difficult to obtain a uniform slurry.
【０００８】非水系の有機バインダーは水ガラス粉末を
無機質繊維紙に固定するもので、この非水系有機バイン
ダーとしては、可塑剤が不要なアクリル系バインダー、
またはＤＢＰ、ＤＯＰ等の可塑剤を添加したＰＶＢ（ポ
リビニルブチラール）等の有機バインダーが適当であ
る。その理由は、バインダーによる固定後の無機質繊維
紙に柔軟性を与えることにより、ハニカム構造体を成形
するためのコルゲート加工（波形加工）を可能にするこ
とができるからである。The non-aqueous organic binder fixes water glass powder to inorganic fiber paper. As the non-aqueous organic binder, an acrylic binder which does not require a plasticizer,
Alternatively, an organic binder such as PVB (polyvinyl butyral) to which a plasticizer such as DBP or DOP is added is suitable. The reason is that by imparting flexibility to the inorganic fiber paper fixed by the binder, corrugation (corrugation) for forming the honeycomb structure can be performed.
【０００９】非水系有機バインダーは、粘度を調整する
ため、アルコール類、トルエン、キシレン、酢酸エチ
ル、ＭＥＫ等の汎用の溶剤で３〜１０倍に希釈したもの
を使用し、スラリー全重量に対する有機バインダー添加
量は不揮発分で５〜２０％としたものがよく、非水系有
機バインダーには、除湿の効果がなく、ハニカム成形後
不必要であるため、水ガラス粉末を充分固定できるため
の最小量にとどめておく。The non-aqueous organic binder is used in order to adjust the viscosity. The non-aqueous organic binder is diluted 3 to 10 times with a general-purpose solvent such as alcohols, toluene, xylene, ethyl acetate and MEK. The amount added is preferably 5 to 20% in terms of nonvolatile content. Since the non-aqueous organic binder does not have a dehumidifying effect and is unnecessary after honeycomb molding, it is required to be a minimum amount for sufficiently fixing the water glass powder. Keep it.
【００１０】水ガラス粉末の担体となる無機質繊維紙と
しては、ガラス繊維やセラミック繊維の使用が好ましい
が、特にそれらに限定されるのではなく、その無機質繊
維紙の種類、寸法等製品に応じて適当なものを任意に選
択使用できる。また、水ガラスを固定した無機質繊維紙
をコルゲート加工したハニカム構造体の形状、寸法は適
当なものを任意に選択することができる。しかし、無機
質繊維紙には、除湿素子製造工程において酸等と接触し
たときの特性劣化がなるべく少ない素材から成るものを
使用することが望ましい。As the inorganic fiber paper serving as a carrier of the water glass powder, glass fiber or ceramic fiber is preferably used, but is not particularly limited thereto. Any suitable one can be selected and used. The shape and dimensions of the honeycomb structure obtained by corrugating inorganic fiber paper to which water glass is fixed can be arbitrarily selected as appropriate. However, as the inorganic fiber paper, it is desirable to use a material made of a material that causes as little characteristic deterioration as possible upon contact with an acid or the like in the dehumidifying element manufacturing process.
【００１１】[0011]
【発明の実施の形態】本発明の好ましい実施の形態とし
て、水ガラス粉末６０〜１００重量部、非水系有機バイ
ンダー１０〜３０重量部、溶剤７０〜１４０重量部を混
合して得たスラリーは粘度１０〜１００ｐｓに調整し、
ロールコータにより無機質繊維紙に塗工し、これにより
水ガラス粉末を１００〜１５０ｇ／ｍ2固定し、このよ
うにして水ガラス粉末を非水系有機バインダーで固定し
た無機質繊維紙を用いてコルゲート加工した波形紙と、
加工しない平面紙を交互に重ね合わせて接合して成るハ
ニカム構造体とした後、固定した水ガラス粉末の含水率
を調整し、酸で処理することにより、所定の細孔構造を
有するシリカゲルに変化させ、４００℃の焼成により、
シリカゲルを担持した除湿素子を作成した。DESCRIPTION OF THE PREFERRED EMBODIMENTS As a preferred embodiment of the present invention, a slurry obtained by mixing 60 to 100 parts by weight of water glass powder, 10 to 30 parts by weight of a non-aqueous organic binder, and 70 to 140 parts by weight of a solvent is used. Adjust to 10-100ps,
The inorganic fiber paper was coated with a roll coater, and the water glass powder was fixed at 100 to 150 g / m 2 , and the water glass powder was corrugated using the inorganic fiber paper fixed with a non-aqueous organic binder. Corrugated paper,
After forming a honeycomb structure formed by alternately stacking and joining unprocessed flat papers, the water content of the fixed water glass powder is adjusted, and by treatment with acid, it is converted into silica gel with a predetermined pore structure And by firing at 400 ° C.,
A dehumidifying element supporting silica gel was prepared.
【００１２】[0012]
実施例１ ガラス繊維紙に結晶水を含む粒径１０μｍに調整した水
ガラス粉末１００重量部、アクリル系バインダー２５重
量部、トルエン７５重量部を混合し、粘度７０ｐｓのス
ラリーとした。次いで、ロールコータを用いて前記スラ
リーを前記ガラス繊維紙上に均一に塗工した後、１１０
℃で乾燥し、溶剤トルエンを除去した。製作した塗工紙
には水ガラス粉末が１４０ｇ／ｍ2固定され、塗工紙は
充分な柔軟性を有し、後工程のコルゲート加工に際して
何ら問題がなかった。上記の塗工紙をセルピッチ３．３
ｍｍ、山高１．９ｍｍのセル寸法のハニカム構造体に成
形した後、水ガラス含水率を調整し、酸処理することに
より水ガラスをシリカゲルに変化させたところ、シリカ
ゲルが１５０ｋｇ／ｍ3固定された除湿素子を得た。Example 1 A glass fiber paper was mixed with 100 parts by weight of water glass powder adjusted to a particle size of 10 μm containing water of crystallization, 25 parts by weight of an acrylic binder, and 75 parts by weight of toluene to prepare a slurry having a viscosity of 70 ps. Next, the slurry was uniformly coated on the glass fiber paper using a roll coater.
Drying at ℃ removed the solvent toluene. Water glass powder was fixed at 140 g / m 2 on the produced coated paper, and the coated paper had sufficient flexibility, so that there was no problem in corrugating in a later step. A cell pitch of 3.3 was applied to the above coated paper.
mm, was formed into a honeycomb structure of the cell dimension of the bowler 1.9 mm, to adjust the water glass water content, was the water glass is changed to silica gel by acid treatment, silica gel is 150 kg / m 3 fixed A dehumidifying element was obtained.
【００１３】実施例２ セラミック繊維紙に平均粒径２０μｍに調整した水ガラ
ス粉末３０重量部、ＰＶＢ７重量部、エタノール６０重
量部、可塑剤ＤＢＰ３重量部を混合し、粘度６０ｐｓの
スラリーとした。次いで、実施例１と同様にロールコー
タを用いてセラミック繊維紙に均一に塗工した後、１０
０℃で乾燥し、溶剤を除去した。塗工したセラミック繊
維紙には水ガラス粉末が１００ｇ／ｍ2固定され、作製
した塗工紙は充分な柔軟性を有し、後工程のコルゲート
加工に際して何ら問題がなかった。前記塗工紙を、実施
例１と同様に、ハニカム構造体に成形した後、シリカゲ
ルに変化させたところ、シリカゲルが１０５ｋｇ／ｍ3
固定された除湿素子を得た。Example 2 A ceramic fiber paper was mixed with 30 parts by weight of water glass powder adjusted to an average particle diameter of 20 μm, 7 parts by weight of PVB, 60 parts by weight of ethanol, and 3 parts by weight of a plasticizer DBP to form a slurry having a viscosity of 60 ps. Then, as in Example 1, a uniform coating was performed on the ceramic fiber paper using a roll coater.
Drying at 0 ° C. removed the solvent. Water glass powder was fixed at 100 g / m 2 on the coated ceramic fiber paper, and the prepared coated paper had sufficient flexibility and had no problem in corrugating in a later step. The coated paper in the same manner as in Example 1, after forming the honeycomb structure was varied silica gel, silica gel 105 kg / m 3
A fixed dehumidifying element was obtained.
【００１４】比較例１ セラミック繊維紙をセルピッチ３．３ｍｍ、山高１．９
ｍｍのセル寸法のハニカム構造体に成形した後、固形分
濃度２７％の水ガラスに含浸し、１００℃で乾燥した。
この含浸−乾燥操作を３回繰り返し、水ガラスを１４０
ｋｇ／ｍ3固定した。実施例１と同様に、水ガラス含水
率を調整した後、酸処理しシリカゲルに変化させたとこ
ろ、シリカゲルが１００ｋｇ／ｍ3固定された除湿素子
を得た。Comparative Example 1 A ceramic fiber paper was prepared with a cell pitch of 3.3 mm and a mountain height of 1.9.
After being formed into a honeycomb structure having a cell size of 2 mm, it was impregnated with water glass having a solid content concentration of 27% and dried at 100 ° C.
This impregnation-drying operation was repeated three times,
kg / m 3 was fixed. After adjusting the water content of the water glass in the same manner as in Example 1, it was changed to silica gel by acid treatment, and a dehumidifying element in which silica gel was fixed at 100 kg / m 3 was obtained.
【００１５】[0015]
【発明の効果】以上、詳述したように、本発明によれ
ば、水ガラス粉末を多量かつ、均一に固定することがで
き、酸処理後はシリカゲルを多量、かつ均一に担持した
除湿素子が得られる。As described above in detail, according to the present invention, a large amount of water glass powder can be fixed uniformly, and after the acid treatment, a dehumidifying element supporting a large amount of silica gel uniformly can be obtained. can get.
Claims (2)
よび非水系溶剤を主成分として混合して得たスラリーを
無機質繊維紙に塗工し、それを成形体に成形し、水ガラ
ス粉末をシリカゲルに変化させたことを特徴とする除湿
素子の製造法。1. A slurry obtained by mixing a water glass powder, a non-aqueous organic binder and a non-aqueous solvent as main components is applied to an inorganic fiber paper, formed into a molded product, and the water glass powder is converted into silica gel. A method for manufacturing a dehumidifying element, wherein the method is changed.
範囲のものを用いた請求項１に記載の除湿素子の製造
法。2. The method for producing a dehumidifying element according to claim 1, wherein the water glass powder has a particle size in a range of 5 to 50 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9131677A JPH10305209A (en) | 1997-05-06 | 1997-05-06 | Production of dehumidifying element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9131677A JPH10305209A (en) | 1997-05-06 | 1997-05-06 | Production of dehumidifying element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10305209A true JPH10305209A (en) | 1998-11-17 |
Family
ID=15063650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9131677A Pending JPH10305209A (en) | 1997-05-06 | 1997-05-06 | Production of dehumidifying element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10305209A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020164192A (en) * | 2019-03-29 | 2020-10-08 | デンカ株式会社 | Boron nitride powder package, cosmetic and manufacturing method of the same |
| CN114682045A (en) * | 2022-03-17 | 2022-07-01 | 青岛华世洁环保科技有限公司 | Antibacterial household dehumidifying rotating wheel and preparation method thereof |
-
1997
- 1997-05-06 JP JP9131677A patent/JPH10305209A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020164192A (en) * | 2019-03-29 | 2020-10-08 | デンカ株式会社 | Boron nitride powder package, cosmetic and manufacturing method of the same |
| CN114682045A (en) * | 2022-03-17 | 2022-07-01 | 青岛华世洁环保科技有限公司 | Antibacterial household dehumidifying rotating wheel and preparation method thereof |
| CN114682045B (en) * | 2022-03-17 | 2024-03-08 | 青岛华世洁环保科技有限公司 | Antibacterial household dehumidifying rotating wheel and preparation method thereof |
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