JPH02276837A - Treatment of porous material - Google Patents

Treatment of porous material

Info

Publication number
JPH02276837A
JPH02276837A JP9964989A JP9964989A JPH02276837A JP H02276837 A JPH02276837 A JP H02276837A JP 9964989 A JP9964989 A JP 9964989A JP 9964989 A JP9964989 A JP 9964989A JP H02276837 A JPH02276837 A JP H02276837A
Authority
JP
Japan
Prior art keywords
synthetic resin
open cells
porous body
gas
continuous pores
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.)
Granted
Application number
JP9964989A
Other languages
Japanese (ja)
Other versions
JPH0660261B2 (en
Inventor
Tadashi Kirisawa
桐澤 忠
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.)
NIPPON ENBAIRO KOGYO KK
Original Assignee
NIPPON ENBAIRO KOGYO KK
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 NIPPON ENBAIRO KOGYO KK filed Critical NIPPON ENBAIRO KOGYO KK
Priority to JP1099649A priority Critical patent/JPH0660261B2/en
Publication of JPH02276837A publication Critical patent/JPH02276837A/en
Publication of JPH0660261B2 publication Critical patent/JPH0660261B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Filtering Materials (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

PURPOSE:To lessen cell diameter of open cell by introducing a gas mixed with mist of a solution of synthetic resin to a porous material having open cells, coating the wall face of the open cells with the solution of synthetic resin and drying the coated material. CONSTITUTION:A gas (preferably inert gas such as air, nitrogen or argon) premixed with mist 3 of a solution of synthetic resin by a spray gum, etc., is sent in the arrow direction to a porous material 1 having open cells 2, the mist 3 is attached to the entrance of the open cells 2 and flow in the open cells 2 is enlarged by flow pressure of the gas to form a liquid film 4 on a wall face 2A of the open cells 2. Then the solvent of the liquid film 4 is removed by drying, a synthetic resin layer 5 is formed on the wall face 2A of the open cells 2 to reduce the pore diameter of the open cells. The cell diameter can be arbitrarily reduced depending upon the thickness of the synthetic resin layer.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明はP紙、不織布、編織物、焼結体、発泡体等の連
続気孔を有する多孔体の処理方法に関するものであり、
該多孔体は主としてフィルターとして使用される。
[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for treating porous bodies having open pores such as P paper, nonwoven fabrics, knitted fabrics, sintered bodies, foamed bodies, etc.
The porous body is mainly used as a filter.

〔従来の課題〕[Conventional issues]

P紙、不織布、編織物、焼結体、発泡体等の連続気孔を
有する多孔体は主としてフィルターとして用いられてい
るが、上記多孔体の連続気孔の孔径は一般には5μ以上
であるが、最近の電子工業等では更に微細な濾過を行な
う必要性が高まり、1μ以下更には0.1μ以下の微細
孔径の連続気孔を有する多孔体が要求されている。しか
しながらこれら多孔体の連続気孔の孔径を小さくするこ
とは極めて困難であった。例えばF紙、不織布、編織物
等の繊維材料では使用する繊維の径を小さくすればよい
が、繊維の径を小さくするには限Jffがあるし、焼結
体等では焼結体を構成する粒子径を小さくすればよいが
、粒子径を小さくすることにも限度がある。また発泡体
においては連続気孔の径の調節は極めて困難である。し
たがって微細濾過にあっては、止むを得ず価格の非常に
高い特殊な繊維素誘導体やブラスチヴクからなる微細連
続気孔を有する多孔体を使用しているのが現状である0 〔課題を解決するための手段〕 本発明は上記従来の課題を解決するだめの手段として、
連続気孔を有する多孔体に合成樹脂溶液の霧滴を混合し
た気体を送通し、該多孔体の連続気孔の壁面に該合成樹
脂溶液を塗布した後乾燥することによって該連続気孔の
孔径を縮小する多孔体の処理方法を提供するものである
Porous bodies with open pores such as P paper, nonwoven fabrics, knitted fabrics, sintered bodies, and foamed bodies are mainly used as filters.The pore diameter of the open pores of the above porous bodies is generally 5μ or more, but recently In the electronics industry, etc., there is an increasing need for finer filtration, and porous bodies having continuous pores with micropore diameters of 1 μm or less, and even 0.1 μm or less are required. However, it has been extremely difficult to reduce the diameter of continuous pores in these porous bodies. For example, for fiber materials such as F paper, nonwoven fabrics, and knitted fabrics, the diameter of the fibers used can be reduced, but there is a limit Jff to reducing the diameter of the fibers, and for sintered bodies, etc. It is sufficient to reduce the particle size, but there is a limit to reducing the particle size. Furthermore, in foams, it is extremely difficult to adjust the diameter of continuous pores. Therefore, in microfiltration, it is unavoidable to use a porous body with fine continuous pores made of special cellulose derivatives and blastivuk, which are extremely expensive0 [To solve the problem] [Means for Solving the Problem] The present invention provides the following means for solving the above-mentioned conventional problems.
A gas mixed with mist of a synthetic resin solution is passed through a porous body having continuous pores, and the synthetic resin solution is applied to the walls of the continuous pores of the porous body and then dried to reduce the pore size of the continuous pores. The present invention provides a method for treating a porous body.

本発明で用いられる連続気孔を有する多孔体とは、上記
したようにp紙、不織布、編織物等の繊維材料、焼結体
のような粒子固結体、無機あるいは有機の発泡体である
As described above, the porous body having continuous pores used in the present invention includes fiber materials such as paper, nonwoven fabrics, and knitted fabrics, solidified particles such as sintered bodies, and inorganic or organic foams.

本発明で用いられる合成樹脂溶液とはエポキシ樹脂、ウ
レタン樹脂、メラミン樹脂、尿素樹脂、フェノール樹脂
、アクリル樹脂、酢酸ビニル樹脂、スチレン樹脂等の熱
硬化性合成樹脂、熱可塑性合成樹脂のドルオール、キジ
ロール、酢酸エチル、酢酸ブチル、アセトン、メチルエ
チルケトン、メタノール、エタノール、ドルクロルエチ
レン、n−ヘキサン、水等の溶剤の単独または二種以上
の混合溶剤に溶解させた溶液である。上記例示は本発明
を限定するものではなく、本発明においては広範囲な合
成樹脂および溶剤が用いられる。
The synthetic resin solutions used in the present invention are thermosetting synthetic resins such as epoxy resins, urethane resins, melamine resins, urea resins, phenol resins, acrylic resins, vinyl acetate resins, and styrene resins, thermoplastic synthetic resins such as drol, It is a solution dissolved in a single solvent or a mixture of two or more of solvents such as quidylol, ethyl acetate, butyl acetate, acetone, methyl ethyl ketone, methanol, ethanol, dolchlorethylene, n-hexane, and water. The above examples are not intended to limit the invention, and a wide range of synthetic resins and solvents may be used in the invention.

上記合成樹脂溶液は通常合成樹脂を10〜60重量係程
度含むものであるが、本発明においては上記合成樹脂溶
液の濃度は特に限定されるものではなく、該合成樹脂溶
液の濃度は該溶液が霧滴になり易い粘度を有するように
調節されることが望ましい。
The synthetic resin solution usually contains about 10 to 60 parts by weight of synthetic resin, but in the present invention, the concentration of the synthetic resin solution is not particularly limited. It is desirable that the viscosity is adjusted so that the viscosity easily increases.

更に上記合成樹脂溶液には所望により硬化剤、可塑剤、
染料、あるいは目的によって消臭剤、還元剤、酸化剤等
の処理剤を混合して本よい。
Furthermore, the synthetic resin solution may contain a curing agent, a plasticizer,
Depending on the purpose, dyes or processing agents such as deodorants, reducing agents, and oxidizing agents may be mixed.

本発明においては連続気孔を有する多孔体に空気、窒素
、アルゴン等の望ましくは不活性な気体を送通し、該気
体にスプレー等により合成樹脂溶液の霧滴を混合する。
In the present invention, a preferably inert gas such as air, nitrogen, or argon is passed through a porous body having continuous pores, and mist droplets of a synthetic resin solution are mixed with the gas by spraying or the like.

〔作用〕[Effect]

本発明の作用を第1図〜第3図により説明する。 The operation of the present invention will be explained with reference to FIGS. 1 to 3.

図において(1)は多孔体、(2)は該多孔体(1)の
連続気孔である。該多孔体(1)に第1図に示すように
矢印方向から気体を送通する。該気体に合成樹脂溶液の
液滴(3)を混合すると、該液滴(3)は多孔体(1)
の連続気孔(2)の入口に付着するが、第2図に示すよ
うに気体の送通圧に押されて連続気孔(2)内に泥波し
て該連続気孔(2)の壁面+2)A(例えばp紙であれ
は戸紙を構成するバルブ繊維の周壁面)に液膜(4)を
形成する。その後該乾燥によって液膜(4)の溶剤を除
去すれば、第3図に示すように多孔体(11の連続気孔
(2)の壁面(2)Aは合成樹脂層(5)に被覆され、
したがって多孔体(1)の連続気孔(2)の径は縮小さ
れる。
In the figure, (1) is a porous body, and (2) is a continuous pore of the porous body (1). Gas is passed through the porous body (1) from the direction of the arrow as shown in FIG. When the droplets (3) of the synthetic resin solution are mixed with the gas, the droplets (3) form the porous body (1).
However, as shown in Figure 2, it is pushed by the pressure of the gas and flows into the continuous pore (2), causing a wave of water to form on the wall surface of the continuous pore (2) (+2). A liquid film (4) is formed on A (for example, in the case of P paper, the peripheral wall surface of the valve fibers constituting the door paper). After that, when the solvent of the liquid film (4) is removed by drying, the wall surface (2) A of the porous body (11 continuous pores (2)) is covered with the synthetic resin layer (5), as shown in FIG.
Therefore, the diameter of the continuous pores (2) of the porous body (1) is reduced.

合成樹脂層(5)の厚さは気体に対する液滴(3)の混
合量や該液滴(3)を混合した気体の送通量で調節され
得るから連続気孔(2)の孔径を所望の径に縮小するこ
とが出来る。そして多孔体+11の連続気孔(2)の孔
径は一般にバラツキがあるけれども、連続気孔(2)の
孔径の大きな本のは気体の通過抵抗が小さいから優先的
に液滴を混合した気体が通過し、その結果孔径の大きな
連続気孔(2)から壁面(2)Aに液膜(4)が形成さ
れて行く。かくして連続気孔(2)は孔径を縮小される
とともにバラツキが均一化されるのである。
The thickness of the synthetic resin layer (5) can be adjusted by adjusting the amount of the droplets (3) mixed with the gas and the amount of gas mixed with the droplets (3), so the diameter of the continuous pores (2) can be adjusted to a desired value. It can be reduced in diameter. Although the pore diameters of the continuous pores (2) in porous body +11 generally vary, the continuous pores (2) with larger pore diameters have a smaller resistance to gas passage, so the gas mixed with the droplets passes through them preferentially. As a result, a liquid film (4) is formed on the wall surface (2) A from the continuous pores (2) with large pore diameters. In this way, the diameter of the continuous pores (2) is reduced and the variation is made uniform.

〔発明の効果〕〔Effect of the invention〕

したがって本発明においては、多孔体の連続気孔の孔径
を合成樹脂層によって所定の径に縮小しかつ均一化する
ことが極めて容易に可能であシ、微細濾過用の多孔質体
を非常に安価に提供出来る。
Therefore, in the present invention, it is extremely easy to reduce the pore diameter of the continuous pores of the porous body to a predetermined diameter and make it uniform by using the synthetic resin layer, and the porous body for microfiltration can be manufactured at a very low cost. I can provide it.

また多孔体が合成樹脂層によって補強されかつ耐薬品性
を向上させることも出来る。
Further, the porous body can be reinforced with a synthetic resin layer and its chemical resistance can be improved.

〔実施例〕〔Example〕

本発明を第4図に示す一実施例によって説明すると、0
υはガイド筒であり、該ガイド筒αDの根端部には送風
機C121が配され、中間にはスプレーガンα鵠が挿着
され、先端部にはクリップ(14)が取付けられ、該ク
リップ(14)に多孔体tl)が支持される。そして該
送風機(Izを作動させて矢印に示すように空気を該多
孔体(1)に送通し、スプレーガンOJより該空気中に
合成樹脂溶液の液滴(3)を混合する。このようにして
多孔体(1)に液滴(3)を混合した空気を送通すると
第1図〜第3図に示すプロセスによって多孔体(1)の
連続気孔(2)の壁面(2)Aに合成樹脂層(5)が形
成される。合成樹脂層(5)の形成にあたっては常温で
送風のみ行なうか、あるいは加熱して乾燥、あるいは乾
燥硬化させる。
The present invention will be explained with reference to an embodiment shown in FIG.
υ is a guide tube, a blower C121 is arranged at the root end of the guide tube αD, a spray gun α is inserted in the middle, and a clip (14) is attached to the tip. 14) supports the porous body tl). Then, operate the blower (Iz) to send air through the porous body (1) as shown by the arrow, and mix the droplets (3) of the synthetic resin solution into the air using the spray gun OJ. When air mixed with droplets (3) is passed through the porous body (1), the droplets (3) are synthesized on the wall surface (2) A of the continuous pores (2) of the porous body (1) through the process shown in Figures 1 to 3. A resin layer (5) is formed.In forming the synthetic resin layer (5), only air is blown at room temperature, or it is dried by heating or dried and hardened.

上記多孔体T1)としては例えば下記のものが採用され
る。
As the above-mentioned porous body T1), for example, the following is employed.

(1)7紙 (2)ポリエステル不織布 (3)アルミナ焼結体 (4)ポリウレタン発泡体 上記合成樹脂溶液としては例えば下記のものが採用され
る。
(1) 7 paper (2) Polyester nonwoven fabric (3) Alumina sintered body (4) Polyurethane foam As the above synthetic resin solution, for example, the following are employed.

(1)エポキシ樹脂    15重量係硬化剤    
    51 ドルオール     20 (2)メラミン樹脂    25重量係硬化剤    
    0.51 メタノール     60 水          14.5# (3)アクリル樹脂栢   10重量係酢酸エチル  
   90 1 *1;アクリル樹脂:メチルメタクリレートとエチルア
クリレートとの60:40重量比の共重合体 (4)スチレン樹脂*2  15重量係メチルエチルケ
トン 85 *2 ;スチレンとブタジェンとの80:20重量比の
共重合体 上記実施例において多孔体(1)を面積1d、孔径6μ
の連続気孔(2)を有するF紙+1)を用い、合成樹脂
溶液をエポキシ樹脂溶液+1)を用いた場合、本発明の
処理によって7紙(1)の連続気孔の孔径は下表のよう
に縮小される。
(1) Epoxy resin 15 weight coefficient hardening agent
51 Dorol 20 (2) Melamine resin 25 Weight coefficient hardening agent
0.51 Methanol 60 Water 14.5 # (3) Acrylic resin 10 weight ratio Ethyl acetate
90 1 *1; Acrylic resin: 60:40 weight ratio copolymer of methyl methacrylate and ethyl acrylate (4) Styrene resin *2 15 weight ratio Methyl ethyl ketone 85 *2; 80:20 weight ratio of styrene and butadiene Copolymer In the above example, the porous body (1) had an area of 1 d and a pore diameter of 6 μm.
When F paper +1) with continuous pores (2) of Reduced.

本発明において多孔体として濾紙を用いる場合には通常
第5図に示すようなサポータ−(211を用いる。該サ
ポータ−c11)は多孔筒体器と該多孔筒体(2zの両
端に形成されるフランジC23,(241とからなる。
When filter paper is used as the porous body in the present invention, a supporter (211) as shown in FIG. It consists of flanges C23 and (241).

該サポータ−+211には第6図に示すようにつづら折
りした7紙(1)が支持され、該サポータ−121+の
多孔筒体■の一端には栓(ハ)が嵌着される。したがっ
て本発明の処理方法は第7図に示すように濾紙(1)を
サポータ−C+t+に支持した状態で実施されてもよい
As shown in FIG. 6, the supporter +211 supports seven pieces of paper (1) folded in a zigzag manner, and a stopper (c) is fitted into one end of the porous cylinder (2) of the supporter (121+). Therefore, the treatment method of the present invention may be carried out with the filter paper (1) supported on the supporter C+t+ as shown in FIG.

即ち濾紙(1)を支持したサポータ−c211を複数個
チャンバーC311内に収容し、該サポータ−CDの開
口端をチャンバーC31)の支板(ハ)の連絡口(ハ)
にセットして送風ポンプ(至)の吸引側に連絡する吸引
径路(ロ)をチャンバーC31+の底部に接続し、該送
風ポンプ(至)の吐出側に連絡する送風径路(至)はチ
ャンバーC311の側面に接続し、該送風径路(至)の
途中には合成樹脂溶液のスプレーガンGでが挿入される
That is, a plurality of supports c211 supporting filter paper (1) are housed in a chamber C311, and the open end of the supporter CD is connected to the communication port (c) of the support plate (c) of the chamber C31).
The suction path (B) that connects to the suction side of the ventilation pump (TO) is connected to the bottom of the chamber C31+, and the ventilation path (B) that connects to the discharge side of the ventilation pump (TO) is connected to the A spray gun G for a synthetic resin solution is connected to the side surface, and a spray gun G for a synthetic resin solution is inserted in the middle of the ventilation path.

上記構成において送風ポンプ四を作動させればチャンバ
ーC311内の空気はサポータ−Qυに支持されている
濾紙(11を通してサポータ−CD内に流入し吸引径路
c34)を介して送風ポンプ(至)の吸引側に吸引され
、送風側より吐出されて送風径路(至)を介してチャン
バーC311に送風される。このように濾紙(11を通
して空気をチャンバー(3D1吸引径路(2)、送風ポ
ンプ(至)、送風径路(至)と循環させつ\送風径路(
至)のスプレーガンc3nから合成樹脂溶液をスプレー
して合成樹脂溶液の液滴(3)を該空気に混合する。か
くして第1図〜第3図に示すような機構で7紙(1)の
連続気孔(2)の壁面(2)Aには合成樹脂層(5)が
形成される。
In the above configuration, when the blower pump 4 is operated, the air in the chamber C311 flows into the supporter CD through the filter paper (11) supported by the supporter Qυ and is sucked into the blower pump (to) via the suction path c34. The air is sucked to the side, discharged from the ventilation side, and blown into the chamber C311 via the ventilation path (toward). In this way, the air is circulated through the filter paper (11) through the chamber (3D1 suction path (2), the blower pump (to), and the blower path (to)).
A synthetic resin solution is sprayed from the spray gun c3n (to) to mix droplets (3) of the synthetic resin solution into the air. Thus, a synthetic resin layer (5) is formed on the wall surface (2) A of the continuous pores (2) of the seven paper sheets (1) by the mechanism shown in FIGS. 1 to 3.

【図面の簡単な説明】[Brief explanation of drawings]

第1図〜第3図は合成樹脂層形成過程の説明図であり、
第1図は液滴付着状態、第2図は液膜形成状態、第3図
は合成樹脂層形成状態を示し、第4図は本発明に用いら
れる装置の一実施例の説明図、第5図は濾紙サポータ−
の斜視図、第6図は該サポータ−に濾紙を取付けた状態
の斜視図、第7図は濾紙を取付けたサポータ−に本発明
の処理を行なう場合の説明図である。
Figures 1 to 3 are explanatory diagrams of the synthetic resin layer forming process,
FIG. 1 shows a droplet adhering state, FIG. 2 shows a liquid film forming state, FIG. 3 shows a synthetic resin layer forming state, FIG. 4 is an explanatory diagram of an embodiment of the apparatus used in the present invention, and FIG. The figure shows the filter paper supporter.
FIG. 6 is a perspective view of the supporter with filter paper attached thereto, and FIG. 7 is an explanatory diagram of the case where the process of the present invention is applied to the supporter with filter paper attached.

Claims (1)

【特許請求の範囲】[Claims] 連続気孔を有する多孔体に合成樹脂溶液の霧滴を混合し
た気体を送通し、該多孔体の連続気孔の壁面に該合成樹
脂溶液を塗布した後乾燥することによって該連続気孔の
孔径を縮小することを特徴とする多孔体の処理方法
A gas mixed with mist of a synthetic resin solution is passed through a porous body having continuous pores, and the synthetic resin solution is applied to the walls of the continuous pores of the porous body and then dried to reduce the pore size of the continuous pores. A method for processing a porous body characterized by
JP1099649A 1989-04-18 1989-04-18 Method for treating porous body and apparatus for treating porous body Expired - Lifetime JPH0660261B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1099649A JPH0660261B2 (en) 1989-04-18 1989-04-18 Method for treating porous body and apparatus for treating porous body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1099649A JPH0660261B2 (en) 1989-04-18 1989-04-18 Method for treating porous body and apparatus for treating porous body

Publications (2)

Publication Number Publication Date
JPH02276837A true JPH02276837A (en) 1990-11-13
JPH0660261B2 JPH0660261B2 (en) 1994-08-10

Family

ID=14252905

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1099649A Expired - Lifetime JPH0660261B2 (en) 1989-04-18 1989-04-18 Method for treating porous body and apparatus for treating porous body

Country Status (1)

Country Link
JP (1) JPH0660261B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015168714A (en) * 2014-03-05 2015-09-28 三菱瓦斯化学株式会社 Resin structure, and prepreg, resin sheet, metal foil-clad laminate, and printed wiring board prepared using the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61201078A (en) * 1985-02-28 1986-09-05 ダイキン工業株式会社 New impregnated article

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61201078A (en) * 1985-02-28 1986-09-05 ダイキン工業株式会社 New impregnated article

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015168714A (en) * 2014-03-05 2015-09-28 三菱瓦斯化学株式会社 Resin structure, and prepreg, resin sheet, metal foil-clad laminate, and printed wiring board prepared using the same

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