JPH084282Y2 - Molded insulation - Google Patents
Molded insulationInfo
- Publication number
- JPH084282Y2 JPH084282Y2 JP1991013759U JP1375991U JPH084282Y2 JP H084282 Y2 JPH084282 Y2 JP H084282Y2 JP 1991013759 U JP1991013759 U JP 1991013759U JP 1375991 U JP1375991 U JP 1375991U JP H084282 Y2 JPH084282 Y2 JP H084282Y2
- Authority
- JP
- Japan
- Prior art keywords
- carbonaceous
- heat insulating
- insulating material
- sheet
- molded
- 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 - Lifetime
Links
Description
【０００１】[0001]
【産業上の利用分野】本考案は、高温炉などに使用でき
る成形断熱材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molded heat insulating material that can be used in high temperature furnaces.
【０００２】[0002]
【従来の技術】高温炉に使用される断熱材として、炭素
質又は黒鉛質断熱材の表面に、黒鉛粉末と、炭素繊維ミ
ルドファイバーと、フェノール樹脂、フラン樹脂などの
バインダー樹脂とを含むコーティング剤を塗布し、厚み
０．２〜２mm程度のコーティング層を形成した成形断熱
材が知られている。2. Description of the Related Art As a heat insulating material used in a high temperature furnace, a coating agent containing graphite powder, carbon fiber milled fiber and a binder resin such as phenol resin or furan resin on the surface of a carbonaceous or graphite heat insulating material. A molded heat insulating material in which a coating layer having a thickness of about 0.2 to 2 mm is formed by coating
【０００３】しかしながら、この成形断熱材は、断熱性
能および表面の機械的強度が十分でなく、断熱材に高い
表面保護性を付与することが困難である。However, this molded heat insulating material is insufficient in heat insulating performance and mechanical strength of the surface, and it is difficult to impart high surface protection to the heat insulating material.
【０００４】実公昭５８−２９１２９号公報には、断熱
材の表面に、炭素質接着層を介して黒鉛シートを接着
し、表面を保護した成形断熱材が提案されている。この
成形断熱材は、前記コーティング層を形成した成形断熱
材よりも、断熱性能および表面の機械的強度が大きい。Japanese Utility Model Publication No. 58-29129 proposes a molded heat insulating material in which a graphite sheet is adhered to the surface of the heat insulating material via a carbonaceous adhesive layer to protect the surface. This molded heat insulating material has greater heat insulation performance and surface mechanical strength than the molded heat insulating material having the coating layer formed thereon.
【０００５】しかしながら、例えば、厚み１０〜２０mm
程度の断熱材の表面に、厚み０．２〜３mm程度の黒鉛シ
ートを接着すると、断熱材と黒鉛シートとの熱膨脹係数
の差異に起因して、断熱材に反りが発生する。著しい場
合には、黒鉛シートと断熱材とが剥離する。特に温度履
歴を繰返し受けると、黒鉛シートと断熱材との剥離の程
度が著しく大きくなり、高い断熱性及び表面保護性を長
期に亘り維持できなくなる。さらには、黒鉛シートは衝
撃強度が小さく、損傷し易い。そして、黒鉛シートが損
傷した場合には、断熱材が未だ使用できるにも拘らず、
成形断熱材全体を交換する必要があり、経済的でない。However, for example, the thickness is 10 to 20 mm.
When a graphite sheet having a thickness of about 0.2 to 3 mm is adhered to the surface of the heat insulating material, the heat insulating material warps due to the difference in thermal expansion coefficient between the heat insulating material and the graphite sheet. In a remarkable case, the graphite sheet and the heat insulating material are separated from each other. Particularly, when the temperature history is repeatedly received, the degree of peeling between the graphite sheet and the heat insulating material becomes remarkably large, and it becomes impossible to maintain high heat insulating property and surface protective property for a long time. Furthermore, the graphite sheet has low impact strength and is easily damaged. And when the graphite sheet is damaged, the heat insulating material can still be used,
The entire molded insulation needs to be replaced, which is not economical.
【０００６】[0006]
【考案が解決しようとする課題】従って、本考案の目的
は、剥離の発生を防止でき、高い断熱性及び表面保護性
を長期に亘り維持できる成形断熱材を提供することにあ
る。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a molded heat insulating material capable of preventing the occurrence of peeling and maintaining high heat insulating property and surface protective property for a long period of time.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するた
め、本考案は、断熱材と炭素質シートとが、炭素質シー
トを貫通する炭素質接合部材により機械的に接合してい
る成形断熱材であって、断熱材のうち炭素質シートとの
接合面とは反対側の面に径大の凹部が形成され、この凹
部から炭素質シートの外側の面に至る貫通孔に炭素質ボ
ルトの軸部を挿通させ、炭素質ナットで螺合することに
より断熱材と炭素質シートとが接合している成形断熱材
（第１の成形断熱材）を提供する。この成形断熱材にお
いて、断熱材と炭素質シートとが炭素質ボルト及びナッ
トにより機械的に接合され、且つ凹部に炭素繊維フェル
トが充填されていてもよい。また、本考案は、断熱材と
炭素質シートとが、炭素質シートを貫通する炭素質接合
部材により機械的に接合している成形断熱材であって、
炭素質接合部材が、長さが断熱材及び炭素質シートの全
厚よりも短く形成され且つ先端部に炭化または黒鉛化可
能な接着剤が塗布された炭素質釘で構成されている成形
断熱材（第２の成形断熱材）を提供する。 To achieve the above object, according to an aspect of the present invention is a heat insulating material and the carbonaceous sheet, forming a heat insulating material which is mechanically bonded by carbonaceous bonding member penetrating the coal quality sheet Of the carbonaceous sheet
A large-diameter recess is formed on the surface opposite to the joining surface.
Part of the carbonaceous sheet to the outer surface of the carbonaceous sheet.
To insert the shaft of the rod and screw it with a carbonaceous nut.
Molded insulation with more insulation and carbonaceous sheet bonded together
(First molded heat insulating material) is provided. In this molded insulation
The heat insulating material and the carbonaceous sheet between the carbonaceous bolts and nuts.
Mechanically joined with a
May be filled. In addition, this invention is
Carbonaceous sheet and carbonaceous bonding that penetrates the carbonaceous sheet
A molded heat insulating material that is mechanically joined by members,
The carbonaceous joining member is made up of the entire length of the insulation and carbonaceous sheet.
Formed shorter than thickness and carbonized or graphitizable at the tip
Molding made of carbonaceous nails coated with effective adhesive
An insulating material (second molded insulating material) is provided.
【０００８】[0008]
【作用】前記構成の成形断熱材では、炭素質接合部材に
より機械的に接合しているので、熱膨張係数の差異に基
づいて、断熱材と炭素質シートとが剥離することがな
い。さらに、緻密で機械的特性に優れる炭素質シート
は、断熱材に高い表面保護性を与えると共に、輻射伝
熱、および高いガス遮断性により対流伝熱を阻止する。
また、炭素質接合部材で接合しているため、金属製ボル
ト・ナットなどに比べて、接合部位での熱伝導を抑制で
きる。また、第１の成形断熱材では、断熱材のうち炭素
質シートとの接合面とは反対側の面に径大の凹部が形成
され、この凹部から炭素質シートの外側の面に至る貫通
孔に炭素質ボルトの軸部を挿通させ、炭素質ナットで螺
合するので、断熱材と炭素質シートとを簡単な操作で確
実に接合でき、しかも温度履歴や振動による剥離を顕著
に防止できる。さらに、炭素質シートが損傷したり劣化
しても、炭素質シートを容易に交換できるので、断熱材
を繰返し使用でき、寿命を長くできる。 断熱材と炭素質
シートとが炭素質ボルト及びナットにより機械的に接合
され、且つ凹部に炭素繊維フェルトが充填されている場
合には、接合部位の熱伝導も抑制できるので、高い断熱
性が得られる。 前記第２の成形断熱材では、炭素質接合
部材が炭素質釘で構成されているので、炭素質シートの
表面から打込むだけで容易に断熱材と炭素質シートとを
接合でき、しかも高い接合強度が得られる。また、長さ
が前記断熱材及び炭素質シートの全厚よりも短く形成さ
れているので、炭素質釘が断熱材を貫通しない。そのた
め、断熱性が大きい。さらに、先端部に炭化または黒鉛
化可能な接着剤が塗布されているため、高温炉などに装
着すると、前記接着剤が焼成されて断熱材と固着し、接
合強度をさらに大きくできる。また、炭素質釘を抜くこ
ともできるので、炭素質シートの交換及び補修が容易で
ある。 In the molded heat insulating material having the above structure, the carbonaceous bonding member is mechanically bonded, so that the heat insulating material and the carbonaceous sheet are not separated from each other due to the difference in the coefficient of thermal expansion. Further, the carbonaceous sheet, which is dense and has excellent mechanical properties, imparts high surface protection to the heat insulating material, and blocks radiative heat transfer and high gas barrier property to prevent convective heat transfer.
Further, since the carbonaceous joining member is used for joining, heat conduction at the joining portion can be suppressed as compared with metal bolts and nuts. In addition, in the first molded heat insulating material, carbon
A large-diameter recess is formed on the surface opposite to the surface where the quality sheet is joined.
And penetrates from this recess to the outer surface of the carbonaceous sheet.
Insert the carbonaceous bolt shaft through the hole and screw it with a carbonaceous nut.
The heat insulating material and carbonaceous sheet can be easily
Can be actually joined, and peeling due to temperature history and vibration is remarkable
Can be prevented. In addition, the carbonaceous sheet is damaged or deteriorated.
Even if the carbonaceous sheet can be easily replaced,
Can be used repeatedly and the service life can be extended. Insulation and carbonaceous
Mechanically joined to the seat with carbonaceous bolts and nuts
And the recess is filled with carbon fiber felt.
In this case, heat conduction at the joint can also be suppressed, resulting in high heat insulation.
Sex is obtained. In the second molded heat insulating material, carbonaceous bonding
Since the member is composed of carbonaceous nails,
Easily attach heat insulating material and carbonaceous sheet just by driving from the surface
Bonding is possible and high bonding strength is obtained. Also the length
Is formed shorter than the total thickness of the heat insulating material and carbonaceous sheet.
Therefore, carbonaceous nails do not penetrate the insulation. That
Therefore, the heat insulation is great. In addition, carbonized or graphite on the tip
Since it is coated with a liquefiable adhesive, it can be installed in high temperature furnaces.
When it is attached, the adhesive is fired and fixed to the heat insulating material,
The combined strength can be further increased. Also, pull out the carbonaceous nail
It is easy to replace and repair the carbonaceous sheet.
is there.
【０００９】また、前記第１の成形断熱材において、炭
素質ボルトの軸部の長さが、断熱材及び炭素質シートの
厚みよりも短い場合には、接合部位での伝熱を抑制でき
る。In the first molded heat insulating material, charcoal may be used.
When the length of the shaft portion of the material bolt is shorter than the thickness of the heat insulating material and the carbonaceous sheet, heat transfer at the joining portion can be suppressed.
【００１０】さらに、炭素質接合部材が貫通する炭素質
シートの孔径を、炭素質接合部材の断面寸法よりも大き
くすることにより、炭素質シートの孔と炭素質接合部材
との間には隙間が生じる。この隙間は、昇温、冷却に伴
なって生じる両部材間の熱膨脹の差を吸収し、反りの発
生を抑制する。Furthermore, by making the pore size of the carbonaceous sheet through which the carbonaceous joining member penetrates larger than the cross-sectional dimension of the carbonaceous joining member, a gap is formed between the pores of the carbonaceous sheet and the carbonaceous joining member. Occurs. This gap absorbs the difference in thermal expansion between the two members caused by temperature rise and cooling, and suppresses warpage.
【００１１】本明細書において、「炭素質」とは黒鉛質
のみならず複合化された炭素材をも含む意味に用いる。
「炭素繊維」とは炭化又は黒鉛化された繊維を意味す
る。「炭化」とは、炭化又は黒鉛化可能な繊維、樹脂、
ピッチなどを、例えば、４５０〜１５００℃程度の温度
で焼成処理することを意味する。黒鉛化とは、例えば１
５００〜３０００℃程度の温度で焼成処理することを意
味し、黒鉛の結晶構造を有していないときでも黒鉛化の
概念に含める。In the present specification, the term "carbonaceous" is used to mean not only graphite but also a composite carbon material.
"Carbon fiber" means a carbonized or graphitized fiber. "Carbonized" means carbonized or graphitizable fiber, resin,
This means that the pitch or the like is fired at a temperature of about 450 to 1500 ° C., for example. Graphitization means, for example, 1
This means firing at a temperature of about 500 to 3000 ° C., and is included in the concept of graphitization even when it does not have a graphite crystal structure.
【００１２】[0012]
【実施例】以下に、添付図面を参照しつつ、本考案の実
施例をより詳細に説明する。Embodiments of the present invention will be described below in more detail with reference to the accompanying drawings.
【００１３】図１は本考案の一実施例を示す断面図であ
る。成形断熱材は、炭素質の平板状断熱材１と、この断
熱材の一方の面に配された黒鉛シート２と、前記断熱材
１と黒鉛シート２とを機械的に接合する黒鉛ボルト３
ａ、ナット３ｂとで構成されている。黒鉛ボルト３ａの
頭部と断熱材１との間には、黒鉛製ワッシャ４が介在す
る。FIG. 1 is a sectional view showing an embodiment of the present invention. The molded heat insulating material is a carbonaceous flat heat insulating material 1, a graphite sheet 2 arranged on one surface of the heat insulating material, and a graphite bolt 3 for mechanically joining the heat insulating material 1 and the graphite sheet 2.
a and a nut 3b. A graphite washer 4 is interposed between the head of the graphite bolt 3 a and the heat insulating material 1.
【００１４】黒鉛ボルト３ａを通じて断熱材１の反対側
に伝熱するのを防止するため、黒鉛ボルト３ａの軸部の
長さは、断熱材１及び黒鉛シート２全体の厚みよりも短
い。なお、黒鉛ボルト３ａの軸部の長さは、断熱材１を
貫通せず、断熱材１の内部で固定できる範囲で選択でき
るが、断熱材１の厚みの８０％以下、好ましくは７０％
以下である。In order to prevent heat transfer to the opposite side of the heat insulating material 1 through the graphite bolt 3a, the length of the shaft portion of the graphite bolt 3a is shorter than the total thickness of the heat insulating material 1 and the graphite sheet 2. The length of the shaft portion of the graphite bolt 3a can be selected within a range that does not penetrate the heat insulating material 1 and can be fixed inside the heat insulating material 1, but is 80% or less of the thickness of the heat insulating material 1, preferably 70%.
It is the following.
【００１５】前記断熱材１の一方の面には、径大の凹部
５が形成され、この凹部５からは他方の面に至る孔６が
穿設されている。また、前記黒鉛シート２には、黒鉛ボ
ルト３ａが挿通可能な挿通孔７が形成されている。この
挿通孔７の径は、反りが生じるのを防止するため、黒鉛
ボルト３ａの軸部の直径よりも大きい。挿通孔７の径
は、断熱材１と黒鉛シート２との熱膨脹係数の差異に応
じて適当に選択できるが、高温炉用断熱材として使用す
る場合には、黒鉛ボルト３ａの軸部の直径よりも２mm以
上大きく、黒鉛製ワッシャ４の径よりも小さいのが好ま
しい。A large-diameter recess 5 is formed on one surface of the heat insulating material 1, and a hole 6 is formed from the recess 5 to the other surface. Further, the graphite sheet 2 is formed with an insertion hole 7 into which the graphite bolt 3a can be inserted. The diameter of the insertion hole 7 is larger than the diameter of the shaft portion of the graphite bolt 3a in order to prevent warpage. The diameter of the insertion hole 7 can be appropriately selected according to the difference in thermal expansion coefficient between the heat insulating material 1 and the graphite sheet 2, but when used as a heat insulating material for a high temperature furnace, the diameter of the shaft portion of the graphite bolt 3a is Is also larger than 2 mm and is smaller than the diameter of the graphite washer 4.
【００１６】さらに、前記凹部５には、前記黒鉛ボルト
３ａを通じて断熱材１の反対側に伝熱するのをさらに防
止するため、炭素質または黒鉛質の炭素繊維フェルト８
が充填されている。Further, in order to further prevent heat transfer to the opposite side of the heat insulating material 1 through the graphite bolt 3a, the carbon fiber felt 8 of carbonaceous or graphitic material is provided in the recess 5.
Is filled.
【００１７】このような成形断熱材では、黒鉛ボルト３
ａが黒鉛シート２を貫通して機械的に接合しているの
で、断熱材１と黒鉛シート２とが剥離することもない。
また、黒鉛ボルト３ａと黒鉛シート２の挿通孔７との間
に、熱膨脹の差を吸収できる隙間が生じるので、温度履
歴が作用しても、断熱材１に反りが生じることがない。
さらには、黒鉛シート２は緻密で機械的特性、耐風性に
優れるので、断熱材１の表面を保護できると共に、輻射
伝熱のみならず、ガス遮断により対流伝熱を阻止する効
果が大きい。このことに加えて、黒鉛ボルト３ａが断熱
材１を貫通せず、しかも凹部５に炭素繊維フェルト８が
充填されているので、接合部位の熱伝導も抑制でき、高
い断熱性が得られる。また、黒鉛シート２が損傷したり
劣化しても、黒鉛シートを容易に交換できるので、断熱
材１を繰返し使用でき、寿命を長くできる。In such a molded heat insulating material, the graphite bolt 3
Since a penetrates the graphite sheet 2 and is mechanically joined, the heat insulating material 1 and the graphite sheet 2 do not peel off.
Further, since a gap capable of absorbing the difference in thermal expansion is formed between the graphite bolt 3a and the insertion hole 7 of the graphite sheet 2, the heat insulating material 1 does not warp even if the temperature history acts.
Furthermore, since the graphite sheet 2 is dense and has excellent mechanical characteristics and wind resistance, it can protect the surface of the heat insulating material 1 and has a great effect of blocking not only radiant heat transfer but also convective heat transfer by gas cutoff. In addition to this, since the graphite bolt 3a does not penetrate the heat insulating material 1 and the recess 5 is filled with the carbon fiber felt 8, the heat conduction at the joint portion can be suppressed and a high heat insulating property can be obtained. Further, even if the graphite sheet 2 is damaged or deteriorated, the graphite sheet can be easily replaced, so that the heat insulating material 1 can be repeatedly used and the life can be extended.
【００１８】なお、ボルト・ナットは、炭素質であり、
かつ強度が大きいものであればよいが、黒鉛ボルト・ナ
ットが好ましい。炭素質ボルト・ナットの大きさは、特
に制限されないが、例えば、Ｍ６以下のものを使用でき
る。なお、断熱材が緩衝性を有する場合には、ワッシャ
は必ずしも必要ではない。The bolts and nuts are carbonaceous,
Moreover, graphite bolts and nuts are preferable, as long as they have high strength. The size of the carbonaceous bolt / nut is not particularly limited, but for example, M6 or smaller can be used. If the heat insulating material has a cushioning property, the washer is not always necessary.
【００１９】断熱材の形状は、用途に応じて適宜設定で
き、板状に限らず、中空筒状、四角形状等の多角形状な
どであってもよい。断熱材は、単一の層に限らず、嵩密
度の異なる複数の層で構成されていてもよい。The shape of the heat insulating material can be appropriately set according to the application and is not limited to a plate shape, and may be a hollow cylinder shape, a polygonal shape such as a square shape, or the like. The heat insulating material is not limited to a single layer and may be composed of a plurality of layers having different bulk densities.
【００２０】図２は本考案の他の実施例を示す概略斜視
図である。この例では、断熱材１１は中空筒状に成形さ
れ、この断熱材１１の一方の面には、黒鉛シート１２が
黒鉛ボルト１３ａ、ナットで接合されている。なお、符
号１８は断熱材１１の凹部に充填された炭素繊維フェル
トである。FIG. 2 is a schematic perspective view showing another embodiment of the present invention. In this example, the heat insulating material 11 is formed in a hollow cylindrical shape, and the graphite sheet 12 is joined to one surface of the heat insulating material 11 with graphite bolts 13a and nuts. Reference numeral 18 is a carbon fiber felt filled in the concave portion of the heat insulating material 11.
【００２１】前記各実施例において、凹部に充填される
炭素繊維フェルトは、耐熱性の高い黒鉛フェルトである
のが好ましい。In each of the above-mentioned embodiments, the carbon fiber felt to be filled in the recess is preferably a graphite felt having high heat resistance.
【００２２】接合部材は、炭素質であればよく、例え
ば、カーボン／カーボンコンポジット（以下、Ｃ／Ｃコ
ンポジットと称す）であってもよい。The junction member may be a coal quality, for example, carbon / carbon composite (hereinafter, referred to as C / C composite) may be.
【００２３】図３は本考案のさらに他の実施例を示す断
面図、図４は接合部材の他の例を示す斜視図である。断
熱材２１と黒鉛シート２２は、黒鉛シート２２を貫通す
るＣ／Ｃコンポジット製の平板状の釘２３により機械的
に接合されている。この例では、先端部に、フェノール
樹脂などの炭化又は黒鉛化可能な接着剤（図示せず）を
塗布したＴ字状の炭素質釘２３を、幅広の面を水平方向
に向けて打込むことにより、断熱材２１と黒鉛シート２
２とを接合している。このような成形断熱材を高温炉な
どに装着すると、前記接着剤が焼成されて断熱材２１と
固着するので、接合強度を大きくできる。また、炭素質
釘２３の長さは、前記断熱材２１および黒鉛シート２２
の全厚よりも短く、断熱材２１を貫通しない。従って、
前記図１及び図２に示すような、凹部や凹部に充填され
る炭素繊維フェルトを必要とせず、断熱性が大きい。さ
らには、炭素質釘２３を抜くことも可能であるため、黒
鉛シート２２の交換及び補修が容易であり、断熱材２１
を繰返し使用できる。FIG. 3 is a sectional view showing still another embodiment of the present invention, and FIG. 4 is a perspective view showing another example of the joining member. The heat insulating material 21 and the graphite sheet 22 are mechanically joined by a C / C composite plate-shaped nail 23 that penetrates the graphite sheet 22. In this example, a T-shaped carbonaceous nail 23 having a carbonized or graphitizable adhesive (not shown) such as phenolic resin applied to its tip is driven with its wide surface oriented horizontally. Insulation 21 and graphite sheet 2
2 is joined. When such a molded heat insulating material is mounted in a high temperature furnace or the like, the adhesive is fired and fixed to the heat insulating material 21, so that the bonding strength can be increased. The length of the carbonaceous nail 23 is the same as that of the heat insulating material 21 and the graphite sheet 22.
Is less than the total thickness of and does not penetrate the heat insulating material 21. Therefore,
As shown in FIG. 1 and FIG. 2, it does not require a concave portion or a carbon fiber felt to be filled in the concave portion and has a large heat insulating property. Furthermore, since the carbonaceous nail 23 can be pulled out, replacement and repair of the graphite sheet 22 are easy, and the heat insulating material 21
Can be used repeatedly.
【００２４】前記炭素質釘２３は、例えば、厚み１〜５
mm程度の平板状のＣ／Ｃコンポジットを、例えば頭部の
径１５〜２０mm、幅２〜３mm、軸部の長さ３〜５mm、径
３〜７mmに対応させ、かつ先端部を鋭角として打抜くこ
とにより作製できる。なお、炭素質釘２３は、上記に限
らず、適宜の形状及び大きさに形成できる。また、炭素
質釘２３の数は、４〜５本／ｍ2 程度で十分接合でき
る。なお、釘の軸部に、先端部が頭部方向へ向いた鈎部
などのアンカー部を設けてもよい。この場合、断熱材か
らの取外しはやや難しくなるが、使用中に脱落しにくく
なる。The carbonaceous nail 23 has, for example, a thickness of 1 to 5
A flat C / C composite with a diameter of about mm is used, for example, to correspond to a head diameter of 15 to 20 mm, a width of 2 to 3 mm, a shaft length of 3 to 5 mm, and a diameter of 3 to 7 mm. It can be manufactured by pulling out. The carbonaceous nail 23 is not limited to the above, and can be formed in an appropriate shape and size. Further, the number of carbonaceous nails 23 is approximately 4 to 5 / m 2 , and sufficient joining is possible. In addition, an anchor portion such as a hook portion whose tip portion faces the head may be provided on the shaft portion of the nail. In this case, although it is slightly difficult to remove from the heat insulating material, it does not easily come off during use.
【００２５】さらに、前記黒鉛シート２２に、図１に示
される実施例と同様に、炭素質釘２３の軸部の断面寸法
よりも大きく、頭部の断面寸法よりも小さな孔を形成し
てもよい。この場合には、断熱材２１の反りを防止でき
る。さらに、この場合、炭素質釘２２の軸部のうち先端
部側の径を大きくすることにより、断熱材２１に対する
アンカー効果を高めることができると共に、前記接着剤
による効果と相まって、接合強度を大きくできる。な
お、接着剤は、通常の接着剤であってもよいが、炭化ま
たは黒鉛化可能な接着剤が好ましい。Further, similarly to the embodiment shown in FIG. 1, even if a hole larger than the cross-sectional dimension of the shaft portion of the carbonaceous nail 23 and smaller than the cross-sectional dimension of the head portion is formed in the graphite sheet 22. Good. In this case, the heat insulating material 21 can be prevented from warping. Further, in this case, by increasing the diameter of the tip portion side of the shaft portion of the carbonaceous nail 22, the anchor effect with respect to the heat insulating material 21 can be enhanced, and the bonding strength is increased in combination with the effect of the adhesive. it can. The adhesive may be an ordinary adhesive, but an adhesive that can be carbonized or graphitized is preferable.
【００２６】なお、断熱材の種類は特に制限されず、例
えば、炭素繊維フェルト；炭素繊維フェルトに炭化又は
黒鉛化可能な樹脂を含浸し、圧縮成形し、炭化または黒
鉛化した成形体などであってもよい。断熱材は、耐熱性
の高い炭素質又は黒鉛質断熱材、特に黒鉛質断熱材であ
るのが好ましい。炭素繊維フェルトを構成する炭素繊維
としては、例えば、ポリアクリロニトリル、レーヨン、
セルロース系繊維等の高分子繊維、ピッチ系繊維を素材
とする炭素繊維が例示され、一種又は二種以上使用され
る。The type of the heat insulating material is not particularly limited, and examples thereof include carbon fiber felt; carbon fiber felt impregnated with a resin capable of being carbonized or graphitized, compression molded, and carbonized or graphitized. May be. The heat insulating material is preferably a carbonaceous or graphitic heat insulating material having high heat resistance, particularly a graphite heat insulating material. Examples of the carbon fiber forming the carbon fiber felt include polyacrylonitrile, rayon,
Polymer fibers such as cellulosic fibers and carbon fibers made of pitch fibers are exemplified, and one kind or two or more kinds are used.
【００２７】断熱材の厚みは、例えば、１０〜１００mm
程度のものが使用できる。The thickness of the heat insulating material is, for example, 10 to 100 mm.
Something can be used.
【００２８】炭素質シートは、気密性及び耐熱性などに
優れるものであればよいが、前記黒鉛シートやＣ／Ｃコ
ンポジット製シートが好ましい。炭素質シートの厚みは
適宜選択でき、熱容量が著しく大きくならない範囲、例
えば０．１〜５mm、好ましくは０．５〜３mm程度であ
る。なお、黒鉛シートは、黒鉛粉末を硫酸処理して膨脹
させ、圧延押出し等の方法でフレキシブルなシート状と
したものであり、一般に０．５〜１．６ｇ／cm3 程度の
密度を有する。The carbonaceous sheet may be any one having excellent airtightness and heat resistance, but the graphite sheet or the C / C composite sheet is preferable. The thickness of the carbonaceous sheet can be appropriately selected, and is in a range where the heat capacity does not significantly increase, for example, 0.1 to 5 mm, preferably 0.5 to 3 mm. The graphite sheet is obtained by treating graphite powder with sulfuric acid to expand it and making it into a flexible sheet by a method such as rolling extrusion, and generally has a density of about 0.5 to 1.6 g / cm 3 .
【００２９】炭素質シートは、断熱材の内面、外面又は
両面に接合することができる。The carbonaceous sheet can be bonded to the inner surface, outer surface or both surfaces of the heat insulating material.
【００３０】また、炭素質シートに炭素質接合部材が貫
通する孔を形成する場合、該孔径は、炭素質接合部材の
形状に応じて選択でき、炭素質接合部材の断面寸法より
も大きいのが好ましい。より具体的には、例えば、頭部
と軸部とが形成された炭素質接合部材を用いる場合に
は、軸部の断面寸法よりも大きく、かつ頭部の断面寸法
よりも小さな孔を炭素質シートに形成するのが好まし
い。When a hole through which the carbonaceous joining member penetrates is formed in the carbonaceous sheet, the diameter of the hole can be selected according to the shape of the carbonaceous joining member and is larger than the cross-sectional dimension of the carbonaceous joining member. preferable. More specifically, for example, when using a carbonaceous joining member in which a head and a shaft are formed, a carbonaceous material having a hole larger than the cross-sectional dimension of the shaft and smaller than the cross-sectional dimension of the head is used. It is preferably formed into a sheet.
【００３１】本考案の成形断熱材は、高温、例えば、１
０００〜３０００℃で使用されるセラミックス焼成炉、
真空蒸着炉、半導体単結晶成長炉などの高温炉などに使
用できる。The molded insulation of the present invention has a high temperature, for example, 1
Ceramic firing furnace used at 000-3000 ° C,
It can be used in high temperature furnaces such as vacuum deposition furnaces and semiconductor single crystal growth furnaces.
【００３２】[0032]
【考案の効果】本考案の成形断熱材によれば、断熱材と
炭素質シートとを簡単な操作で確実に接合でき、しかも
温度履歴や振動による剥離を顕著に防止できるので、高
い断熱性及び表面保護性を長期に亘り維持できる。ま
た、炭素質シートの交換及び補修が容易である。 [Effect of the Invention] According to the molded heat insulating material of the present invention ,
The carbonaceous sheet can be securely joined with a simple operation, and moreover,
Since it can significantly prevent peeling due to temperature history and vibration,
Good heat insulation and surface protection can be maintained for a long time. Well
Also, it is easy to replace and repair the carbonaceous sheet.
【００３３】また、炭素質接合部材の長さが、断熱材及
び炭素質シートの厚みよりも短い場合には、さらに断熱
性を高めることができる。Further, when the length of the carbonaceous joining member is shorter than the thickness of the heat insulating material and the carbonaceous sheet, the heat insulating property can be further enhanced.
【００３４】[0034]
【実験例】以下に、実験例に基づいて本考案をより詳細
に説明する。[Experimental Example] The present invention will be described in more detail below based on an experimental example.
【００３５】実験例１ 図１に示すような成形断熱材を次のようにして作製し
た。すなわち、黒鉛シート（厚み１．２mm、挿通孔の径
６mmφ）と、板状断熱材（厚み４０mm×縦１０００mm×
横１０００mm、凹部の径１０mmφ）とを、Ｍ４の黒鉛ボ
ルト（軸部の長さ２２mm）を用いて、４００mmのピッチ
で合計９カ所を接合した。また、断熱材の凹部には黒鉛
フェルトを充填した。Experimental Example 1 A molded heat insulating material as shown in FIG. 1 was produced as follows. That is, a graphite sheet (thickness 1.2 mm, insertion hole diameter 6 mmφ) and a plate-shaped heat insulating material (thickness 40 mm x length 1000 mm x
A width of 1000 mm and a recess diameter of 10 mmφ were joined at a total of 9 points at a pitch of 400 mm using M4 graphite bolts (shaft length 22 mm). Further, graphite felt was filled in the concave portion of the heat insulating material.
【００３６】そして、窒素ガス雰囲気中、１０℃／分の
昇温速度で２０００℃に昇温し、その後自然冷却するサ
イクルを２０サイクル繰返したところ、黒鉛シートと断
熱材とが剥離せず、断熱材の反りも生じなかった。Then, the cycle of raising the temperature to 2000 ° C. at a heating rate of 10 ° C./min in a nitrogen gas atmosphere and then naturally cooling was repeated 20 times. There was no warpage of the material.
【００３７】比較例 黒鉛シート（厚み１．２mm）と、板状断熱材（厚み４０
mm×縦１０００mm×横１０００mm）とを、フェノール樹
脂で接着し、黒鉛化した。Comparative Example A graphite sheet (thickness: 1.2 mm) and a plate-shaped heat insulating material (thickness: 40 mm)
mm × length 1000 mm × width 1000 mm) was adhered with a phenol resin and graphitized.
【００３８】得られた成形断熱材を、実験例１と同様し
て１５サイクルの熱履歴に付したところ、黒鉛シートと
断熱材とが部分的に剥離した。また、剥離していない箇
所でも、スパン１ｍ当り２mmの反りが生じていた。The molded heat insulating material thus obtained was subjected to a heat history of 15 cycles in the same manner as in Experimental Example 1, and the graphite sheet and the heat insulating material were partially separated. In addition, even in the non-peeled portion, a warp of 2 mm occurred per 1 m of the span.
【００３９】実験例２ 図３に示すような成形断熱材を次のようにして作製し
た。すなわち、黒鉛シート（厚み１．２mm）と、板状断
熱材（厚み４０mm×縦１０００mm×横１０００mm、凹部
の径１０mmφ）とを、先端部にフェノール樹脂を塗布し
たＣ／Ｃコンポジット製の平板状釘（厚み３mm、頭部の
径１７mm、頭部の幅３mm、軸部の長さ４０mm、軸部の径
５mm）により、４本／ｍ2 の密度で接合した。Experimental Example 2 A molded heat insulating material as shown in FIG. 3 was produced as follows. That is, a graphite sheet (thickness 1.2 mm) and a plate-shaped heat insulating material (thickness 40 mm × length 1000 mm × width 1000 mm, recess diameter 10 mmφ) made of C / C composite flat plate with a phenol resin applied to the tip The nails (thickness 3 mm, head diameter 17 mm, head width 3 mm, shaft length 40 mm, shaft diameter 5 mm) were joined at a density of 4 wires / m 2 .
【００４０】そして、成形断熱材を、実験例１と同様し
て１５サイクルの熱履歴に付したところ、黒鉛シートと
断熱材とが剥離せず、断熱材の反りも生じなかった。When the molded heat insulating material was subjected to a heat history of 15 cycles in the same manner as in Experimental Example 1, the graphite sheet and the heat insulating material were not separated from each other, and the heat insulating material was not warped.
【図１】本考案の一実施例を示す断面図である。FIG. 1 is a sectional view showing an embodiment of the present invention.
【図２】本考案の他の実施例を示す概略斜視図である。FIG. 2 is a schematic perspective view showing another embodiment of the present invention.
【図３】本考案のさらに他の実施例を示す断面図であ
る。FIG. 3 is a sectional view showing another embodiment of the present invention.
【図４】接合部材の他の例を示す斜視図である。FIG. 4 is a perspective view showing another example of a joining member.
１，１１，２１…断熱材 ２，１２，２２…黒鉛シート ３ａ，１３ａ…黒鉛ボルト ３ｂ…黒鉛ナット ７…挿通孔 ２３…炭素質釘 1, 11, 21 ... Insulating material 2, 12, 22 ... Graphite sheet 3a, 13a ... Graphite bolt 3b ... Graphite nut 7 ... Insertion hole 23 ... Carbonaceous nail
Claims (3)
トを貫通する炭素質接合部材により機械的に接合してい
る成形断熱材であって、断熱材のうち炭素質シートとの
接合面とは反対側の面に径大の凹部が形成され、この凹
部から炭素質シートの外側の面に至る貫通孔に炭素質ボ
ルトの軸部を挿通させ、炭素質ナットで螺合することに
より断熱材と炭素質シートとが接合している成形断熱
材。1. A heat insulating material and a carbonaceous sheet, a carbonaceous bonding member penetrating the coal quality sheet a molded heat insulating material are mechanically joined, the carbonaceous sheet of heat insulating material
A large-diameter recess is formed on the surface opposite to the joining surface.
Part of the carbonaceous sheet to the outer surface of the carbonaceous sheet.
To insert the shaft of the rod and screw it with a carbonaceous nut.
Molded insulation with more insulation and carbonaceous sheet bonded together
Material .
及びナットにより機械的に接合され、且つ凹部に炭素繊
維フェルトが充填されている請求項１記載の成形断熱
材。2. A carbonaceous bolt comprising a heat insulating material and a carbonaceous sheet.
And mechanically joined by a nut and carbon fiber in the recess.
The molded heat insulating material according to claim 1, which is filled with fiber felt .
トを貫通する炭素質接合部材により機械的に接合していThe carbonaceous joining member that penetrates the
る成形断熱材であって、炭素質接合部材が、長さが断熱It is a molded heat insulating material, and the carbonaceous joining member
材及び炭素質シートの全厚よりも短く形成され且つ先端Made shorter than the total thickness of the material and carbonaceous sheet and the tip
部に炭化または黒鉛化可能な接着剤が塗布された炭素質Carbonaceous material with carbonized or graphitizable adhesive applied
釘で構成されている成形断熱材。Molded insulation made of nails.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991013759U JPH084282Y2 (en) | 1991-02-18 | 1991-02-18 | Molded insulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991013759U JPH084282Y2 (en) | 1991-02-18 | 1991-02-18 | Molded insulation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04104434U JPH04104434U (en) | 1992-09-09 |
| JPH084282Y2 true JPH084282Y2 (en) | 1996-02-07 |
Family
ID=31748315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991013759U Expired - Lifetime JPH084282Y2 (en) | 1991-02-18 | 1991-02-18 | Molded insulation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH084282Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11193269B2 (en) * | 2018-06-05 | 2021-12-07 | Ohgi Technological Creation Co., Ltd. | Heat insulation sheet and sheet material using heat insulation sheet |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5829129U (en) * | 1981-08-21 | 1983-02-25 | 株式会社日立製作所 | Shaft sealing device for turbocharger |
| JPS60136608A (en) * | 1983-12-26 | 1985-07-20 | 東芝セラミツクス株式会社 | Fixing structure of heat-resistant and abrasion-resistant material-quality plate |
-
1991
- 1991-02-18 JP JP1991013759U patent/JPH084282Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04104434U (en) | 1992-09-09 |
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