JP2619818B2 - Thermal expansion inorganic fiber sealing material - Google Patents
Thermal expansion inorganic fiber sealing materialInfo
- Publication number
- JP2619818B2 JP2619818B2 JP6286735A JP28673594A JP2619818B2 JP 2619818 B2 JP2619818 B2 JP 2619818B2 JP 6286735 A JP6286735 A JP 6286735A JP 28673594 A JP28673594 A JP 28673594A JP 2619818 B2 JP2619818 B2 JP 2619818B2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- inorganic fiber
- sealing material
- acid
- graphite
- 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.)
- Expired - Fee Related
Links
Description
【０００１】[0001]
【産業上の利用分野】本発明は、たとえば防火ドア用シ
ール材、セラミック触媒保持材、あるいはケーブル挿通
孔に対する延焼防止用の填隙材などに使用される熱膨張
性無機質繊維シール材に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat-expandable inorganic fiber sealing material which is used, for example, as a sealing material for a fire door, a ceramic catalyst holding material, or a filling material for preventing a fire from spreading to a cable insertion hole. is there.
【０００２】[0002]
【従来の技術】この種のシール材、例えば防火ドア用シ
ール材として、従来、特公昭５８−１２３１５号公報に
示されているように、膨張材としての酸処理黒鉛１００
ｗｔ部、有機結合材としてのポリクロロプレン２４ｗｔ
部、フエノール樹脂２０ｗｔ部、難燃性の無機質結合材
としての水酸化アルミニウム４８ｗｔ部、無機質充填材
としてのアスベスト繊維１０ｗｔ部、安定材２ｗｔ部の
混練物をガラス繊維からなる極薄のシート状基材に層状
に被覆したものが知られている。2. Description of the Related Art As a sealing material of this type, for example, a sealing material for a fire door, as disclosed in Japanese Patent Publication No. 58-12315, acid-treated graphite 100 as an expanding material has conventionally been used.
wt part, polychloroprene 24wt as organic binder
Part, phenol resin 20 wt part, aluminum hydroxide 48 wt part as a flame-retardant inorganic binder, asbestos fiber 10 wt part as an inorganic filler, and 2 wt parts of a stabilizing material are kneaded with an ultra-thin sheet base made of glass fiber. A material in which a material is coated in layers is known.
【０００３】[0003]
【発明が解決しようとする課題】上記したような構成の
従来のシール材は、加熱時に補強するものがなく、５０
０℃程度の加熱で形態が崩れる傾向にあり、しかも単に
混練物をシート状基材に被覆させただけのものであるか
ら、膨張の方向性がランダムであって、膨張性に劣り、
防火、防煙などのシール機能を十分に期待することはで
きないものであった。The conventional sealing material having the above structure has no reinforcement at the time of heating.
The form tends to collapse by heating at about 0 ° C., and since the kneaded material is simply coated on a sheet-like substrate, the direction of expansion is random, and the expandability is poor,
The sealing functions such as fire prevention and smoke prevention cannot be expected sufficiently.
【０００４】本発明は上記の実情に鑑みてなされたもの
で、加熱時の膨張性能に優れ、高温時の形態保持も確実
で、シール機能の著しい向上を図ることができる熱膨張
性無機質繊維シール材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 in view of the above circumstances, and is a heat-expandable inorganic fiber seal which is excellent in expansion performance at the time of heating, maintains shape at high temperatures, and can remarkably improve the sealing function. It is intended to provide materials.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するた
め、請求項１の発明に係る熱膨張性無機質繊維シール材
は、膨張材としての酸処理黒鉛を２０〜６０ｗｔ％、、
耐熱補強材としての無機質繊維を１０〜３５ｗｔ％、耐
熱結合材としてのセピオライトを１０〜３５ｗｔ％、加
熱前の形態保持材としての有機結合材を５〜２５ｗｔ％
の配合比率に設定してなる混合物を抄造法によりシート
状に形成したものである。In order to achieve the above object, a heat-expandable inorganic fiber sealing material according to the first aspect of the present invention comprises an acid-treated graphite as an expanding material in an amount of 20 to 60% by weight ,
10～35Wt% inorganic fibers as heat-resistant reinforcement, 10~35wt% sepiolite as heat binder, 5-25 wt% organic binder in the form retaining material before heating
The mixture of comprising set to mixing ratio is obtained by forming into a sheet by a papermaking method.
【０００６】また、請求項２の発明に係る熱膨張性無機
質繊維シール材は、膨張材としての酸処理黒鉛と、耐熱
補強材としての無機質繊維と、耐熱補強材および結合材
としての膨張済黒鉛と、耐熱結合材としてのセピオライ
トと、加熱前の形態保持材としての有機結合材とからな
る混合物を抄造法によりシート状に形成したものであ
る。The heat-expandable inorganic fiber sealing material according to the second aspect of the present invention comprises an acid-treated graphite as an expanding material, an inorganic fiber as a heat-resistant reinforcing material, and an expanded graphite as a heat-resistant reinforcing material and a binder. And Sepiolai as heat resistant binder
Doo and is obtained by forming into a sheet by a mixture of papermaking method comprising the organic binder in the form retaining material before heating.
【０００７】上記請求項２の熱膨張性無機質繊維シール
材の配合比率としては、上記酸処理黒鉛が１０〜３０ｗ
ｔ％、無機質繊維が１０〜３５ｗｔ％、膨張済黒鉛が１
０〜３０ｗｔ％、セピオライトが１０〜３５ｗｔ％、有
機結合材が５〜２５ｗｔ％に設定することが好ましい。The compounding ratio of the thermally expandable inorganic fiber sealing material according to claim 2 is such that the acid-treated graphite is 10 to 30 watts.
t%, inorganic fiber is 10 to 35 wt%, expanded graphite is 1
It is preferable to set 0-30 wt%, sepiolite 10-35 wt%, and organic binder 5-25 wt%.
【０００８】[0008]
【作用】請求項１の発明のシール材によれば、酸処理黒
鉛が加熱によって膨張するが、このとき、この酸処理黒
鉛だけを膨張させたのでは飛散して形態を保持すること
ができないので、元のシート形状を保持させながら膨張
させる必要がある。このため、無機質繊維とセピオライ
トを所定量配合し、これらを酸処理黒鉛と均一に分散し
てシート状に作成することで、無機質繊維が層状の基材
となって上記酸処理黒鉛を補強し、さらにセピオライト
がシート全体を補強することになるので、シートの形態
を保持したままでの膨張が可能となる。したがって、加
熱状態でのシートの強度が保たれ、かつ、高い膨張圧が
得られるとともに、その膨張圧を長時間にわたって維持
することが可能である。これは、特に防火ドアシールの
相手であるドア枠、あるいは填隙材の相手材などの強度
が大きい場合のシール材や填隙材などとして使用するこ
とによって、防火、防煙などのシール機能を十分に発揮
することになる。According to the sealing material of the first aspect of the present invention, the acid-treated graphite expands due to heating. At this time, if only the acid-treated graphite is expanded, the acid-treated graphite will scatter and cannot maintain its shape. It is necessary to expand the sheet while maintaining the original sheet shape. For this reason, inorganic fibers and sepiorai
By mixing these in a predetermined amount and uniformly dispersing them in acid-treated graphite to form a sheet, the inorganic fibers serve as a layered base material to reinforce the acid-treated graphite, and furthermore, sepiolite. This reinforces the entire sheet, so that the expansion can be performed while maintaining the shape of the sheet. Therefore, the strength of the sheet in the heated state is maintained, a high expansion pressure is obtained, and the expansion pressure can be maintained for a long time. This is especially true when used as a sealing material or gap material when the strength of the door frame, which is the partner of the fire door seal, or the mating material of the gap material, etc. Will be demonstrated.
【０００９】上記酸処理黒鉛は、黒鉛を硫酸や過酸化水
素などで酸処理されたもので、その配合比率は２０〜６
０ｗｔ％にするのが好ましく、２０ｗｔ％未満になる
と、膨張力が抑えられる。また、６０ｗｔ％を越える
と、シート状に形成し加熱した時にわたのように膨らん
で十分な剛性が得られず、機械的強度の点で不安が残
る。また、無機質繊維としては、セラミック繊維、たと
えばＳＣバルクなどが使用される。この無機質繊維の配
合比率は１０〜３５ｗｔ％にするのが好ましく、１０ｗ
ｔ％未満では、加熱後の強度が低下し、また、３５ｗｔ
％を越えると、膨張特性が抑制される。The acid-treated graphite is obtained by subjecting graphite to acid treatment with sulfuric acid, hydrogen peroxide, or the like.
It is preferably 0 wt%, and if less than 20 wt%, the expansion force is suppressed. On the other hand, if it exceeds 60% by weight, when it is formed into a sheet shape and heated, it swells like cotton and sufficient rigidity cannot be obtained, leaving concerns about mechanical strength. As the inorganic fiber, a ceramic fiber, for example, SC bulk is used. The mixing ratio of the inorganic fibers is preferably set to 10 to 35 wt%, and 10 w
If it is less than t%, the strength after heating decreases, and 35 wt.
%, The expansion characteristics are suppressed.
【００１０】さらに、耐熱結合材としてのセピオライト
の配合比率は１０〜３５ｗｔ％にするのが好ましい。１
０ｗｔ％未満であれば、加熱後の機械的強度が低くな
り、また、３５ｗｔ％を越えると、膨張特性の低下が著
しい。さらにまた、有機結合材とては、ゴムラテックス
（スミカフレックス）などが使用され、その配合比率は
５〜２５ｗｔ％が好ましく、５ｗｔ％未満では、初期の
取り扱い性においての効果がほとんど発揮されず、ま
た、２５ｗｔ％を越えると、加熱時に焼失し、機械的強
度が低下する。Further, it is preferable that the mixing ratio of sepiolite as the heat-resistant binder is 10 to 35 wt%. 1
If it is less than 0 wt%, the mechanical strength after heating will be low, and if it exceeds 35 wt%, the expansion characteristics will be significantly reduced. Further, as the organic binder, rubber latex (Sumika Flex) or the like is used, and its compounding ratio is preferably 5 to 25 wt%, and if it is less than 5 wt%, the effect on the initial handling properties is hardly exhibited, On the other hand, if it exceeds 25% by weight, it is burned out during heating and the mechanical strength is reduced.
【００１１】また、請求項２の発明によれば、酸処理黒
鉛の一部を、耐熱補強材および結合材としての膨張済黒
鉛に置き換えてあるので、この膨張済黒鉛によって加熱
時の膨張量は抑制されるものの、該膨張済黒鉛自体が成
形体として機能するので、高温時の形態保持力に優れた
シール材を得ることができる。このような低膨張タイプ
のシール材は、防火ドアシールの相手であるドア枠、あ
るいは填隙材の相手材などの強度が不充分であっても、
その相手材を膨張圧によって変形したり、壊すおそれが
ない。したがって、相手材の強度が不充分な場合のシー
ル材や填隙材として有効に使用することができる。According to the second aspect of the present invention, a part of the acid-treated graphite is replaced with expanded graphite as a heat-resistant reinforcing material and a binder, so that the expanded graphite reduces the amount of expansion when heated. Although suppressed, the expanded graphite itself functions as a molded body, and thus has excellent shape retention at high temperatures.
A sealing material can be obtained. Such a low-expansion type sealing material has insufficient strength such as a door frame which is a partner of a fireproof door seal, or a partner material of a gap filler,
There is no possibility that the mating material is deformed or broken by the expansion pressure. Therefore, it can be effectively used as a sealing material or a gap material when the strength of the mating material is insufficient.
【００１２】また、請求項１および４の配合比率からな
る混合物は、水を媒体としての抄造法によって均一に分
散される。とくに、この抄造法によると、薄片状（鱗
状）の酸処理黒鉛が一方向へ積層されるので、膨張方向
が一定の方向に揃うために、該酸処理黒鉛の膨張性をシ
ール機能の上で有効に生かすことができる。The mixture having the compounding ratio of the first and fourth aspects is uniformly dispersed by a papermaking method using water as a medium. In particular, according to this papermaking method, flaky (scale-like) acid-treated graphite is laminated in one direction, so that the expansion direction is aligned in a certain direction. It can be used effectively.
【００１３】[0013]
【実施例】以下、本発明の実施例を図面にもとづいて説
明する。図１は本発明に係る熱膨張性無機質繊維シール
材を組み込んだ防火ドアの一部を破断して示すものであ
る。Embodiments of the present invention will be described below with reference to the drawings. Figure 1 is intended in partial section of the fire door incorporating a thermally expandable inorganic fiber sealing <br/> material according to the present invention.
【００１４】図１において、防火ドア１は、内外両側の
外装板２，３間に断熱材４が充填されており、木口被覆
板５，６の内側に熱膨張性無機質繊維シール材Ｍを配設
している。このシール材Ｍは、火災時に膨張し、その膨
張力で上記外装板２，３と被覆板５，６との接着を引き
剥がし、被覆板５，６をドア枠（図示せず）に密着させ
るように働くものである。このシール材Ｍの構成を以下
の実施例に示す。In FIG. 1, a fireproof door 1 has a heat insulating material 4 filled between outer and inner cladding plates 2 and 3 on both inside and outside, and a heat-expandable inorganic fiber sealing material M is arranged inside a wood covering plate 5 and 6. Has been established. The sealing material M expands in the event of a fire, peels off the adhesion between the outer plates 2 and 3 and the cover plates 5 and 6 by the expansion force, and brings the cover plates 5 and 6 into close contact with a door frame (not shown). It works like that. The structure of the sealing material M is shown in the following examples.
【００１５】実施例１ 膨張材として、硫酸もしくは過酸化水素で処理した黒鉛
（８０ＭＬＴＥＵ 中央化成製）を４５ｗｔ％、耐熱補
強材としての無機質繊維としてセラミック繊維（ＳＣバ
ルク １２６０−Ｄ 新日化製）を２０ｗｔ％、耐熱結
合材としてのセピオライト鉱物（ミルコンＭＳ−２−２
昭和鉱業製）を２０ｗｔ％、加熱前の形態保持材とし
ての有機結合材であるエチレン−アクリル−酢ビ共重合
体・麻パルプ（スミカフレックス ９００ 住友化学
製）を１５ｗｔ％の配合比率で混合し、これを抄造し
て、かさ密度０．９０ｇ／ｃｍ3 、厚さ２．５０ｍｍの
シート状に形成した。Example 1 45% by weight of graphite (80MLTEU Chuo Kasei) treated with sulfuric acid or hydrogen peroxide as an expanding material, and ceramic fiber (SC Bulk 1260-D manufactured by Shin Nikka) as an inorganic fiber as a heat-resistant reinforcing material the 20 wt%, Sepi zeolite minerals as heat bonding material (Mirukon MS-2-2
20% by weight of Showa Mining Co., Ltd., and 15% by weight of an ethylene-acryl-vinyl acetate copolymer / hemp pulp (Sumikaflex 900 manufactured by Sumitomo Chemical) as an organic binder as a shape-retaining material before heating at a mixing ratio of 15% by weight. This was formed into a sheet having a bulk density of 0.90 g / cm 3 and a thickness of 2.50 mm.
【００１６】実施例２ 硫酸もしくは過酸化水素で処理した黒鉛（８０ＭＬＴＥ
Ｕ 中央化成製）を２０ｗｔ％、セラミック繊維（ＳＣ
バルク １２６０−Ｄ２ 新日化製）を２０ｗｔ％、膨
張済黒鉛を２０ｗｔ％（８０ＭＬＴＥＵを３００℃×１
Ｈｒ加熱処理したもの、中央化成製）、耐熱結合材とし
てのセピオライト鉱物２０ｗｔ％（ミルコンＭＳ−２−
２ 昭和鉱業製）、加熱前の形態保持材としての有機結
合材であるエチレン−アクリル−酢ビ共重合体・麻パル
プ（スミカフレックス ９００住友化学製）を２０ｗｔ
％の配合比率で混合し、これを抄造して、かさ密度０．
９０ｇ／ｃｍ3 、厚さ２．５０ｍｍのシート状に形成し
た。Example 2 Graphite (80 MLTE) treated with sulfuric acid or hydrogen peroxide
U Chuo Kasei) 20% by weight, ceramic fiber (SC
Bulk 1260-D2 20 wt% of Shin-Nikka Chemical, 20 wt% of expanded graphite (80 MLTEU at 300 ° C x 1)
Those Hr heat treatment, manufactured by Chuo Kasei), Sepi zeolite minerals 20 wt% of a heat-resistant binder (Mirukon MS-2-
2 20 wt% of ethylene-acryl-vinyl acetate copolymer / hemp pulp (Sumikaflex 900 manufactured by Sumitomo Chemical Co., Ltd.) as an organic binder as a shape-retaining material before heating
% Of the mixture, and the mixture is formed into a paper having a bulk density of 0.1%.
It was formed into a sheet having a thickness of 90 g / cm 3 and a thickness of 2.50 mm.
【００１７】実施例３ 硫酸もしくは過酸化水素で処理した黒鉛（８０ＭＬＴＥ
Ｕ 中央化成製）を１５ｗｔ％、セラミック繊維（ＳＣ
バルク １２６０−Ｄ２ 新日化製）を２５ｗｔ％、膨
張済黒鉛を１５ｗｔ％（８０ＭＬＴＥＵを３００℃×１
Ｈｒ加熱処理したもの、中央化成製）、耐熱結合材とし
てのセピオライト鉱物２５ｗｔ％（ミルコンＭＳ−２−
２ 昭和鉱業製）、加熱前の形態保持材としての有機結
合材であるエチレン−アクリル−酢ビ共重合体・麻パル
プ（スミカフレックス ９００住友化学製）を２０ｗｔ
％の配合比率で混合し、これを抄造して、かさ密度０．
９０ｇ／ｃｍ3 、厚さ２．５０ｍｍのシート状に形成し
た。Example 3 Graphite (80 MLTE) treated with sulfuric acid or hydrogen peroxide
U Chuo Kasei) 15% by weight, ceramic fiber (SC
Bulk 1260-D2 25wt%, expanded graphite 15wt% (80MLTEU at 300 ° C × 1)
Those Hr heat treatment, manufactured by Chuo Kasei), Sepi zeolite minerals 25 wt% of a heat-resistant binder (Mirukon MS-2-
2 20 wt% of ethylene-acryl-vinyl acetate copolymer / hemp pulp (Sumikaflex 900 manufactured by Sumitomo Chemical Co., Ltd.) as an organic binder as a shape-retaining material before heating
% Of the mixture, and the mixture is formed into a paper having a bulk density of 0.1%.
It was formed into a sheet having a thickness of 90 g / cm 3 and a thickness of 2.50 mm.
【００１８】比較例１ 発煙硝酸で処理した黒鉛を５０ｗｔ％、有機結合材とし
てのポリクロロプレンを１２ｗｔ％、フェノール樹脂を
１０ｗｔ％、難燃材としての水酸化アルミニウムを２４
ｗｔ％、無機質充填材としてのアスベスト繊維を４ｗｔ
％の配合比率の混練物をガラス繊維からなる極薄のシー
ト状基材に層状に被覆し、かさ密度０．９０ｇ／ｃ
ｍ3 、厚さ２．５０ｍｍのシート状に形成した。Comparative Example 1 50% by weight of graphite treated with fuming nitric acid, 12% by weight of polychloroprene as an organic binder, 10% by weight of phenol resin, and 24% of aluminum hydroxide as a flame retardant
wt%, 4wt of asbestos fiber as inorganic filler
% Kneaded material is coated in a layer on an ultra-thin sheet-like substrate made of glass fiber, and has a bulk density of 0.90 g / c.
It was formed into a sheet having a thickness of m 3 and a thickness of 2.50 mm.
【００１９】上記実施例１，２，３と比較例１の評価と
して、６６ＫＰａの面圧を負荷した状態で昇温速度１０
℃／分で昇温させた時の各試料の膨張量の測定を行なっ
た。図２はそのための測定装置を示し、同図において、
２１，２２は電気炉のヒータ２３で加熱される試料Ｍを
挟持する上下一対の石英棒であり、上記の昇温速度で昇
温する試料Ｍが膨張を開始すると、石英棒２１を押し上
げるので、その変位をダイヤルケージ２４で測定するよ
うにしたものであり、上記ダイヤルケージ２４と石英棒
２１の荷重で試料Ｍには、６６ＫＰａの負荷が加わるよ
うになっている。As an evaluation of the above Examples 1, 2, 3 and Comparative Example 1, a heating rate of 10 with a surface pressure of 66 KPa was applied.
The amount of expansion of each sample when the temperature was raised at a rate of ° C./min was measured. FIG. 2 shows a measuring device for that purpose.
Reference numerals 21 and 22 denote a pair of upper and lower quartz rods for sandwiching the sample M heated by the heater 23 of the electric furnace. When the sample M heated at the above-described heating rate starts expanding, the quartz rod 21 is pushed up. The displacement is measured by the dial cage 24, and a load of 66 KPa is applied to the sample M by the load of the dial cage 24 and the quartz rod 21.
【００２０】ついで、実施例１，２，３と比較例１の評
価として、各試料Ｍの厚さに合わせた隙間に該試料Ｍを
充填し、一定の昇温速度で試料Ｍを昇温させた時の発生
膨張圧の測定を行なった、図３はそのための測定装置を
示し、同図に示すように、電気炉内のヒータ３１で加熱
されるφ２５．４ｍｍのシート状試料Ｍを、その厚さ５
ｍｍに合うように設定された上下の石英棒３２，３３の
隙間ｇに充填し、一定の昇温速度１０℃／分で５００℃
まで昇温させ、試料Ｍが膨張を開始した際の膨張圧をロ
ードセル３４で測定するようにしたものである。Next, as an evaluation of Examples 1, 2 and 3 and Comparative Example 1, a gap corresponding to the thickness of each sample M was filled with the sample M, and the sample M was heated at a constant heating rate. FIG. 3 shows a measuring device for this purpose. As shown in FIG. 3, a sheet sample M having a diameter of 25.4 mm heated by a heater 31 in an electric furnace was measured. Thickness 5
The gap g between the upper and lower quartz rods 32, 33 set to match the mm is filled at 500 ° C. at a constant heating rate of 10 ° C./min.
, And the expansion pressure when the sample M starts expanding is measured by the load cell 34.
【００２１】最後に、実施例１，２，３と比較例１の評
価として、一定の隙間に各試料Ｍを防火ドアシール材と
して充填した後、熱処理し、その後、各試料Ｍの圧縮剛
性を測定した。図４はそのための測定装置を示し、防火
ドア用シール材としての各試料Ｍを１０ｍｍの隙間Ｇに
充填し、電気炉のヒータ４１で常温から５００℃まで３
０分間、ならびに５００℃×３０分間の加熱処理を行な
い、各試料Ｍの圧縮剛性を１．６ＫＰａおよび１８．１
ＫＰａで測定した。上記各測定結果を表１に示す。Finally, as an evaluation of Examples 1, 2 and 3 and Comparative Example 1, after filling each sample M in a certain gap as a fire door seal material, heat-treating and then measuring the compression stiffness of each sample M. did. FIG. 4 shows a measuring device for this purpose. Each sample M as a sealing material for a fireproof door is filled in a gap G of 10 mm, and is heated from room temperature to 500 ° C. by a heater 41 of an electric furnace.
A heat treatment was performed for 0 minute and at 500 ° C. for 30 minutes, and the compression stiffness of each sample M was set to 1.6 KPa and 18.1.
It was measured in KPa. Table 1 shows the results of the above measurements.
【００２２】[0022]
【表１】 [Table 1]
【００２３】表１から明らかなように、実施例１のもの
は、高い膨張圧および膨張量を発生し得るので、図１に
示すような防火ドアのシール材として使用した際、火災
時に被覆板５，６を押し広げる力が長時間にわたって発
生し続け、有効な密封効果を発揮させることができる。
また、無機質繊維が層状となって酸処理黒鉛を補強し、
さらに、セピオライト鉱物がシート全体を補強するの
で、形態を保持したままでの膨張が可能であることがわ
かった。As is clear from Table 1, the first embodiment can generate a high inflation pressure and a large amount of inflation. Therefore, when used as a sealing material for a fire door as shown in FIG. The force for pushing and spreading 5, 6 continues to be generated for a long time, and an effective sealing effect can be exhibited.
In addition, the inorganic fibers are layered to reinforce the acid-treated graphite,
Furthermore, since the sepiolite mineral reinforces the entire sheet, it has been found that expansion is possible while maintaining the shape.
【００２４】また、実施例２，３のものは、圧縮剛性が
高く、形態保持性能に優れていることが判る。さらに、
酸処理黒鉛の一部が膨張済黒鉛に置き換えられた配合比
により、実施例１のものよりも膨張性が抑えられてい
る。このため、これら実施例２，３のものは、防火ドア
のドア枠や填隙材の相手部材などの強度が充分でない場
合のシール材として有効に使用することができる。Further, it can be seen that those of Examples 2 and 3 have high compression rigidity and are excellent in shape retention performance. further,
Due to the compounding ratio in which a part of the acid-treated graphite was replaced with expanded graphite, the expandability was suppressed more than that of Example 1. For this reason, those of Examples 2 and 3 can be effectively used as a sealing material when the strength of the door frame of the fire door or the mating member of the gap material is not sufficient.
【００２５】比較例１のものは、膨張性能が実施例１〜
３のものよりも劣っており、さらに、膨張材を支える耐
熱補強材などがないので、５００℃×３０分の熱処理で
シート強度が失われる。このため、防火・防災に対して
安定したシール性を発揮させることは難しい。In the case of Comparative Example 1, the inflation performance was as high as in Examples 1 to 3.
The sheet strength is inferior to that of No. 3 and there is no heat-resistant reinforcing material or the like that supports the expandable material, so that the sheet strength is lost by heat treatment at 500 ° C. for 30 minutes. For this reason, it is difficult to exhibit stable sealing performance for fire prevention and disaster prevention.
【００２６】[0026]
【発明の効果】以上のように、請求項１の発明によれ
ば、膨張材としての酸処理黒鉛に、補強材としての無機
質繊維およびセピオライト、さらには、加熱前の形態保
持材としての有機結合材を加え、これらを抄造してシー
ト状に成形したので、膨張の方向性が一定となり、形崩
れのおそれのなく高い膨張特性が得られるとともに、補
強作用によって加熱状態での高い膨張圧が確保されて、
防火ドアなどの填隙用として優れたシール機能を発揮さ
せることができる。特に、請求項１の発明のシール材
は、膨張性能を重視したもので、所定のシール機能を十
分に発揮させることができる。As described above, according to the first aspect of the present invention, the acid-treated graphite as the expanding material, the inorganic fiber and the sepiolite as the reinforcing material, and the organic bonding as the shape retaining material before heating are added. The material was added, and these were formed into a sheet and formed into a sheet, so that the direction of expansion was constant, high expansion characteristics were obtained without the risk of shape collapse, and a high expansion pressure in the heated state was secured by the reinforcing effect Being
An excellent sealing function can be exhibited for filling a fire door or the like. In particular, the sealing material of the first aspect of the present invention places emphasis on expansion performance, and can sufficiently exhibit a predetermined sealing function.
【００２７】また、請求項２，３の発明によれば、酸処
理黒鉛の一部を膨張済黒鉛に置き換えた配合としている
ので、膨張量が抑制されるが、高温時の形態保持力が高
められ、相手材の強度が不充分な場合のシール材として
有効に使用することができる。 Further, according to the invention of claim 2, since <br/> you are compounded by replacing a portion of the acid-treated graphite expanded already graphite, but expansion amount is suppressed, the form of high temperature As a sealing material when the holding force is increased and the strength of the mating material is insufficient
Can be used effectively .
【図１】本発明の一実施例による熱膨張性無機質繊維シ
ール材を組み込んだ防火ドアの一部を破断して示す斜視
図である。[1] intumescent inorganic fiber according to an embodiment of the present invention Shi
Is a perspective view in partial section of fire doors incorporating Lumpur material.
【図２】膨張率の測定装置を示す概略構成図である。FIG. 2 is a schematic configuration diagram showing an expansion rate measuring device.
【図３】膨張圧の測定装置を示す概略構成図である。FIG. 3 is a schematic configuration diagram showing an inflation pressure measuring device.
【図４】形態保持力の測定装置を示す概略構成図であ
る。FIG. 4 is a schematic configuration diagram showing a configuration retention force measuring device.
１ 防火ドア ２，３ 外装板 ４ 断熱材 ５，６ 被覆板 Ｍ 熱膨張性無機質繊維シール材DESCRIPTION OF SYMBOLS 1 Fire prevention door 2, 3 Exterior board 4 Insulation material 5, 6 Coating board M Thermal expansion inorganic fiber sealing material
───────────────────────────────────────────────────── フロントページの続き (72)発明者 谷村 聡康 京都府福知山市長田野町２丁目66番地の ３ 日本ピラー工業株式会社福知山工場 内 (56)参考文献 特開 平５−295351（ＪＰ，Ａ) 特開 昭63−72780（ＪＰ，Ａ) 特開 平４−233988（ＪＰ，Ａ) 特開 平７−18249（ＪＰ，Ａ) ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Toshiyasu Tanimura 2-66, Nagatano-cho, Fukuchiyama-shi, Kyoto, Japan Fukuchiyama factory in Nippon Pillar Industry Co., Ltd. (56) References JP-A-5-295351 (JP, A JP-A-63-72780 (JP, A) JP-A-4-233988 (JP, A) JP-A-7-18249 (JP, A)
Claims (3)
ｗｔ％、、耐熱補強材としての無機質繊維を１０〜３５
ｗｔ％、耐熱結合材としてのセピオライトを１０〜３５
ｗｔ％、加熱前の形態保持材としての有機結合材を５〜
２５ｗｔ％の配合比率に設定してなる混合物を抄造法に
よりシート状に形成したことを特徴とする熱膨張性無機
質繊維シール材。An acid-treated graphite as an expanding material is used in an amount of 20 to 60.
wt%, 10 to 35 inorganic fibers as heat-resistant reinforcing material
wt%, sepiolite as a heat-resistant binder is 10 to 35 %.
wt%, 5 to 5 % of organic binder as shape retention material before heating
A heat-expandable inorganic fiber sealing material, wherein a mixture having a blending ratio of 25 wt% is formed into a sheet by a papermaking method.
材としての無機質繊維と、耐熱補強材および結合材とし
ての膨張済黒鉛と、耐熱結合材としてのセピオライト
と、加熱前の形態保持材としての有機結合材とからなる
混合物を抄造法によりシート状に形成したことを特徴と
する熱膨張性無機質繊維シール材。2. An acid-treated graphite as an expanding material, and heat-resistant reinforcement
Inorganic fiber as material, heat-resistant reinforcing material and binder
Expanded graphite and heat-resistant binderSepiolite
And an organic binder as a shape retaining material before heating
The mixture is formed into a sheet by the papermaking method.
Heat-expandable inorganic fibersstickerWood.
機質繊維を１０〜３５ｗｔ％、膨張済黒鉛を１０〜３０
ｗｔ％、セピオライトを１０〜３５ｗｔ％、有機結合材
を５〜２５ｗｔ％の配合比率に設定してなる請求項２の
熱膨張性無機質繊維シール材。3. The acid-treated graphite is 10 to 30 wt%, the inorganic fiber is 10 to 35 wt%, and the expanded graphite is 10 to 30 wt%.
3. The heat-expandable inorganic fiber sealing material according to claim 2 , wherein the mixing ratio is set to 10 wt% to 35 wt%, sepiolite to 10 to 35 wt%, and organic binder to 5 to 25 wt%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6286735A JP2619818B2 (en) | 1994-11-21 | 1994-11-21 | Thermal expansion inorganic fiber sealing material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6286735A JP2619818B2 (en) | 1994-11-21 | 1994-11-21 | Thermal expansion inorganic fiber sealing material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08143856A JPH08143856A (en) | 1996-06-04 |
| JP2619818B2 true JP2619818B2 (en) | 1997-06-11 |
Family
ID=17708348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6286735A Expired - Fee Related JP2619818B2 (en) | 1994-11-21 | 1994-11-21 | Thermal expansion inorganic fiber sealing material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2619818B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6153674A (en) * | 1998-01-30 | 2000-11-28 | 3M Innovative Properties Company | Fire barrier material |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5885728A (en) * | 1997-04-04 | 1999-03-23 | Ucar Carbon Technology Corporation | Flexible graphite composite |
| US5902762A (en) * | 1997-04-04 | 1999-05-11 | Ucar Carbon Technology Corporation | Flexible graphite composite |
| US5846459A (en) | 1997-06-26 | 1998-12-08 | Ucar Carbon Technology Corporation | Method of forming a flexible graphite sheet with decreased anisotropy |
| CA2338460A1 (en) | 1998-06-02 | 1999-12-29 | Thomas William Weber | Formable flexible graphite sealing composites |
| US6060189A (en) * | 1998-06-03 | 2000-05-09 | Ucar Carbon Technology Corporation | Electrically conductive seal for fuel cell elements |
| US6037074A (en) * | 1998-07-07 | 2000-03-14 | Ucar Carbon Technology Corporation | Flexible graphite composite for use in the form of a fuel cell flow field plate |
| US6087034A (en) * | 1998-07-09 | 2000-07-11 | Ucar Graph-Tech Inc. | Flexible graphite composite |
| US6413671B1 (en) | 2000-04-10 | 2002-07-02 | Gaftech Inc. | Flexible graphite article and fuel cell electrode with enhanced electrical and thermal conductivity |
| US6506484B1 (en) | 2000-01-24 | 2003-01-14 | Graftech Inc. | Fluid permeable flexible graphite article with enhanced electrical and thermal conductivity |
| US6468686B1 (en) | 2000-01-24 | 2002-10-22 | Graftech Inc. | Fluid permeable flexible graphite fuel cell electrode with enhanced electrical and thermal conductivity |
| US6503652B2 (en) | 2000-06-29 | 2003-01-07 | Graftech Inc. | Fuel cell assembly method with selective catalyst loading |
| US6413663B1 (en) | 2000-06-29 | 2002-07-02 | Graftech Inc. | Fluid permeable flexible graphite fuel cell electrode |
| US20210353984A1 (en) * | 2018-10-24 | 2021-11-18 | Hilti Akriengesellschaft | Composite material and fire protection element for sealing passage openings and joints in components |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6372780A (en) * | 1986-09-12 | 1988-04-02 | Nippon Reinz Co Ltd | Graphite sheet |
| JP2595163B2 (en) * | 1992-04-20 | 1997-03-26 | 株式会社アスク | Heat-expandable heat-insulating sealing material |
-
1994
- 1994-11-21 JP JP6286735A patent/JP2619818B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6153674A (en) * | 1998-01-30 | 2000-11-28 | 3M Innovative Properties Company | Fire barrier material |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08143856A (en) | 1996-06-04 |
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