JPS6345049A - Sheet material - Google Patents

Sheet material

Info

Publication number
JPS6345049A
JPS6345049A JP62137350A JP13735087A JPS6345049A JP S6345049 A JPS6345049 A JP S6345049A JP 62137350 A JP62137350 A JP 62137350A JP 13735087 A JP13735087 A JP 13735087A JP S6345049 A JPS6345049 A JP S6345049A
Authority
JP
Japan
Prior art keywords
fluororesin
sheet material
aromatic polyamide
fibers
base fabric
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
JP62137350A
Other languages
Japanese (ja)
Other versions
JPH0244853B2 (en
Inventor
勲 山崎
一夫 後藤
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 Pillar Packing Co Ltd
Original Assignee
Nippon Pillar Packing Co Ltd
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 Pillar Packing Co Ltd filed Critical Nippon Pillar Packing Co Ltd
Priority to JP62137350A priority Critical patent/JPS6345049A/en
Publication of JPS6345049A publication Critical patent/JPS6345049A/en
Publication of JPH0244853B2 publication Critical patent/JPH0244853B2/ja
Granted legal-status Critical Current

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Landscapes

  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Inorganic Fibers (AREA)
  • Nonwoven Fabrics (AREA)
  • Woven Fabrics (AREA)
  • Reinforced Plastic Materials (AREA)
  • Laminated Bodies (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 (イ)発明の分野 本発明は耐圧性や耐熱性や耐薬品を必要とする例えば化
学薬品の配管の接続部分等に使用するガスケット材料、
或いは、風煙道用ダクト継手、その他産業用途に活用で
きるアスベストフリーのシート材料に関する。
DETAILED DESCRIPTION OF THE INVENTION (a) Field of the Invention The present invention relates to gasket materials used in connection parts of chemical piping, etc., which require pressure resistance, heat resistance, and chemical resistance.
Alternatively, the present invention relates to an asbestos-free sheet material that can be used for wind flue duct joints and other industrial applications.

(ロ)発明の背景 従来、例えばガスケット材料等のシート状となした材料
として弗素樹脂の単体からなるものが使用されているが
、この弗素樹脂は耐圧性が低く高い負荷を長期間受ける
とクリープ現象(一定の応力に対して歪が時間と共に増
大する現象)により応力緩和が生じて例えばガスケット
の場合では、密封性能が低下する欠点があった。
(b) Background of the Invention Conventionally, materials made of a single fluororesin have been used as sheet materials such as gasket materials, but this fluororesin has low pressure resistance and tends to creep when subjected to high loads for long periods of time. This phenomenon (a phenomenon in which strain increases over time for a given stress) causes stress relaxation, which has the disadvantage that, for example, in the case of gaskets, sealing performance deteriorates.

この欠点を補うために無機繊維やカーボン扮末を充填し
ているが性質改良に限度があり、長期的に高い負荷を受
けるところではやはりクリープ現象による応力緩和は避
けられず汎用的に使うことは出来なかった。
In order to compensate for this drawback, inorganic fibers and carbon powder are filled, but there is a limit to the improvement of properties, and stress relaxation due to the creep phenomenon is unavoidable in areas that are subjected to long-term high loads, so they cannot be used for general purposes. I could not do it.

(ハ)発明の目的 この発明は、耐圧性、耐浸透漏洩性すぐれているばかり
でなく、耐熱性、耐薬品性、耐溶剤性にもすぐれ、ガス
ケット材料に限らず、鳳煙道用ダクト継手の蛇腹や、辷
り材、パツキン材等として使用できる基本的なアスベス
トフリーのシート材料の提供を目的とする。
(c) Purpose of the invention This invention not only has excellent pressure resistance and penetration leakage resistance, but also has excellent heat resistance, chemical resistance, and solvent resistance, and is applicable not only to gasket materials but also to duct joints for flue pipes. The objective is to provide a basic asbestos-free sheet material that can be used as bellows, stringing material, packing material, etc.

(ニ)発明の構成 この発明は、約70重量%のフェノール系BA維と杓3
0重量%の芳香族ポリアミド系繊維との混紡繊維から成
る基布に弗素樹脂のデイスパージョンを含浸させ、該弗
素樹脂の融点温度以上で前記基布を焼成加圧して形成し
たシート材料であることを特徴とする。
(d) Structure of the invention This invention comprises about 70% by weight of phenolic BA fibers and
A sheet material formed by impregnating a base fabric made of a blended fiber with 0% by weight of aromatic polyamide fibers with a fluororesin dispersion, and firing and pressurizing the base fabric at a temperature equal to or higher than the melting point of the fluororesin. It is characterized by

(ホ)発明の効果 この発明によれば、上述の基布を構成ブるフ[ノール繊
維は炎を出して燃え出さないとか、熱を受けた部分が炭
素繊維化して黒いこげめを作るが灰化しない等の望遠性
を有しているうえに全く溶融せず、しかも高温度下にお
いても強度保持性が高く、さらに分解して有害ガスを発
生することもないなど優れた性質を有している。
(E) Effects of the Invention According to this invention, the phenolic fibers that make up the base fabric described above do not emit flames or burn out, and the parts that receive heat turn into carbon fibers and create a black stain. It has excellent properties such as not only does not ash, but also does not melt at all, retains its strength even at high temperatures, and does not decompose and generate harmful gases. ing.

また基布を構成する芳香族ポリアミド系繊維は500℃
間で焦げず、自己消火性を有しているうえに融解せず、
しかも高温度下における抗張力が高い等の優れた特性を
有している。
In addition, the aromatic polyamide fibers that make up the base fabric are heated to 500°C.
It does not scorch, has self-extinguishing properties, and does not melt.
Furthermore, it has excellent properties such as high tensile strength at high temperatures.

従ってシート材料は基布のもつ引張強さと低伸び率が弗
素樹脂の耐圧性を一段と高めて弗素樹脂の機械的強度を
高くしており、弗素樹脂の高い負荷に対するクリープ度
が小さくなり、例えば、ガスケットとして用いられると
きは、緩和がなく長期に亘り安定した密封性能を維持づ
る。
Therefore, the tensile strength and low elongation of the base fabric of the sheet material further enhances the pressure resistance of the fluororesin and increases the mechanical strength of the fluororesin, which reduces the degree of creep of the fluororesin under high loads. When used as a gasket, it maintains stable sealing performance over a long period of time without relaxation.

そのうえ基布の有する耐熱性(防炎性)と弗素樹脂の耐
熱性とが相俟って耐熱性が一段と優れたアスベストフリ
ーのシート材料となる。
Furthermore, the heat resistance (flame resistance) of the base fabric and the heat resistance of the fluororesin combine to create an asbestos-free sheet material with even better heat resistance.

特に芳香族ポリアミド系繊維は弗素樹脂の融点温度以上
の温度下での焼成加圧時に若干軟化状態となり、弗素樹
脂のアイスバージョンが含浸されないフェノール系繊維
束内の空間を埋めて、その漏洩通路を封鎖するのでシー
ト材料の浸透漏洩を大幅に低減する。
In particular, aromatic polyamide fibers become slightly softened during firing and pressurization at temperatures above the melting point of the fluororesin, and the ice version of the fluororesin fills the spaces in the phenolic fiber bundles that are not impregnated and prevents leakage paths. Since it is sealed, seepage leakage of the sheet material is greatly reduced.

さらに、焼成加圧したことによって基布の炭素含有準が
80%以上になり、耐薬品性が向上し、耐薬品性におい
ても優れたアスベストフリーのシート材料を得ることが
できる効果がある。
Furthermore, by firing and pressurizing, the carbon content of the base fabric becomes 80% or more, and chemical resistance is improved, and an asbestos-free sheet material with excellent chemical resistance can be obtained.

次にフェノール系1aIiと芳香族ポリアミド系繊維と
の混紡比率に言及すると、弗素樹脂ディスパージョンを
混紡基布に含浸する場合、フェノール系繊維は非親和性
(反発性)を有し、芳香族ポリアミド系繊維は親和性を
有するので上記ディスパージョンにて基布を完全に目詰
めするには芳香族ポリアミド系繊維を多くする必要があ
る。
Next, referring to the blending ratio of phenolic 1aIi and aromatic polyamide fiber, when impregnating a blended base fabric with a fluororesin dispersion, the phenolic fiber has non-compatibility (repulsion), and the aromatic polyamide Since these fibers have affinity, it is necessary to increase the amount of aromatic polyamide fibers in order to completely fill the base fabric with the above dispersion.

一方、フェノール系1維はri1良性、耐薬品性を有し
、焼成した時に炭化するので、表面の!2擦係数も低く
優れた素材であり、この特性を生うすためには、上述の
芳香族ポリアミド系繊維は極力少ない方がよい。
On the other hand, phenolic 1-fiber has ri1 benign properties and chemical resistance, and carbonizes when fired, so the surface! It is an excellent material with a low coefficient of friction, and in order to make use of this property, it is better to use as little amount of the above-mentioned aromatic polyamide fiber as possible.

以上の点からガスケットその他のシート材料としての混
紡適正範囲はフェノール系繊維60〜80%、芳香族ポ
リアミド系[140〜20%で、混紡最適性値はフェノ
ール系繊維約70重8R%、芳香族ポリアミド系繊維約
30重量%となる。
From the above points, the appropriate blending range for gaskets and other sheet materials is 60 to 80% phenolic fiber, 140 to 20% aromatic polyamide, and the optimal blending value is approximately 70% by weight 8R% phenolic fiber, 140% to 20% aromatic polyamide. Approximately 30% by weight of polyamide fibers.

(へ)発明の実施例 この発明の一実施例を以下図面に基づいて詳述する。(f) Examples of the invention An embodiment of the present invention will be described in detail below based on the drawings.

第1図においてシート材料1は70重量%のフェノール
系繊維と30重0%の芳香族ポリアミド繊維とのd紡糸
からなる織布2に弗素樹脂3のディスパージョン(弗素
樹脂の水性分散体)を含浸させてなる単一構成材料4を
複数枚積層し、これを弗素樹脂3の遊転温度以上で焼成
加圧して一体的に形成したものである。
In FIG. 1, a sheet material 1 is a woven fabric 2 made by d-spinning of 70% by weight phenolic fibers and 30% by weight aromatic polyamide fibers, and a dispersion of fluororesin 3 (an aqueous dispersion of fluororesin). A plurality of impregnated single component materials 4 are laminated and then baked and pressed at a temperature higher than the free rotation temperature of the fluororesin 3 to form an integral structure.

上記の織布2の70%を構成するフェノール系繊維は炎
を出して燃え出さないとか、熱を受けた部分が炭素繊維
化して黒い焦げ目を作るが灰化しない等の防炎性を有し
ているうえに全く溶融せず、しかも高温度下においても
強度保持性が高く、さらに分解して有害ガスを発生する
こともない等優れた性質を有している。
The phenolic fibers that make up 70% of the above-mentioned woven fabric 2 have flame retardant properties, such as not emitting flames but not burning out, and parts that receive heat turning into carbon fibers, producing black burnt marks but not turning into ash. It has excellent properties such as not melting at all, maintaining high strength even at high temperatures, and not decomposing and producing harmful gases.

また、織布2の30%を構成する芳香族ポリアミド系繊
維は500℃まで焦げず、燃焼伝播しない自己消火性を
有しているうえに融解せず、しかも高温度下における抗
張力が高いなどの優れた特性を有している。
In addition, the aromatic polyamide fibers that make up 30% of the woven fabric 2 do not burn up to 500 degrees Celsius, have self-extinguishing properties that do not propagate combustion, do not melt, and have high tensile strength at high temperatures. It has excellent properties.

従ってシート材料は織布のもつ引張強さと低伸び率が弗
素樹脂3の耐圧性を一段と高めて弗素樹脂の曙械的強度
を高くしており、弗素樹脂3の高い負荷に対するクリー
プ度が小さくなり、ガスケットとして用いられるときは
、緩和がなく長期に亘り安定した密封性能を維持する。
Therefore, the tensile strength and low elongation of the woven fabric in the sheet material further enhances the pressure resistance of the fluororesin 3 and increases the mechanical strength of the fluororesin, which reduces the degree of creep of the fluororesin 3 under high loads. When used as a gasket, there is no relaxation and maintains stable sealing performance over a long period of time.

そのうえ織布2の有する耐熱性(防炎性)と弗素樹脂の
耐熱性とが相俟って耐熱性が一段と浸れたアスベストフ
リーのシート材料となっている。
Furthermore, the heat resistance (flame resistance) of the woven fabric 2 and the heat resistance of the fluororesin combine to provide an asbestos-free sheet material with even higher heat resistance.

特に芳香族ポリアミド系繊維は弗素樹脂3の融点温度以
上の温度下での焼成加圧時に若干軟化状態となり、弗素
樹脂のディスパージョンが含浸されないフェノール系繊
維束内の空間を埋めて、その漏洩通路を封鎖するので、
シート材料の浸透漏洩を大幅に低減する。
In particular, aromatic polyamide fibers become slightly softened during firing and pressurization at a temperature higher than the melting point of the fluororesin 3, and the fluororesin dispersion fills the spaces in the phenolic fiber bundles that are not impregnated, resulting in leakage paths. Since we will block the
Significantly reduces seepage leakage of sheet materials.

さらに焼成加圧したことによって織布の炭素含有ヱが8
0%以上になる耐薬品性が向上してJ3す、耐薬品性に
おいても優れたアスベストフリーのシート材料となって
いる。
Furthermore, by firing and pressurizing, the carbon content of the woven fabric was reduced to 8.
The chemical resistance has been improved to 0% or more, making it an asbestos-free sheet material with excellent chemical resistance.

次に、上記のシート材料の¥J造工程の一例を第2図に
基づいて説明する。
Next, an example of the manufacturing process for the above-mentioned sheet material will be explained based on FIG. 2.

ロールAに巻きついた帯状の織布2を引出して弗素樹脂
のディスパージョンを入れた含浸槽Bに通して弗素樹脂
のディスパージョンを含浸させ、次に300℃程度に加
熱した電気炉Cの中に通して織布2を炭化させる。
The strip-shaped woven fabric 2 wound around the roll A is pulled out and passed through an impregnating tank B containing a fluororesin dispersion to be impregnated with the fluororesin dispersion, and then placed in an electric furnace C heated to about 300°C. to carbonize the woven fabric 2.

これにより単一構成材料が得られる。This results in a single component material.

この単一構成材料を必要に応じて所望の寸法に裁断し、
この単一構成材料を視数枚積層し、350℃、30 K
9 / C!iの条件で焼成と加圧とを行えばよい。
This single constituent material is cut to desired dimensions as needed,
Several sheets of this single constituent material were laminated and heated at 350°C and 30K.
9/C! Firing and pressurization may be performed under the conditions of i.

上記実施例では基布としてフェノール系繊維と芳香族ポ
リアミド系繊維との温紡糸から成る織布を使用したが、
第3図に示すようにフェノール系!l雑と芳香族ポリア
ミド系1fi雑から成るフェルト等の不織布5を使用し
てもよい。
In the above examples, a woven fabric made of warm spun yarn of phenolic fibers and aromatic polyamide fibers was used as the base fabric.
As shown in Figure 3, it is phenolic! It is also possible to use a non-woven fabric 5 such as felt made of 1-fiber and aromatic polyamide-based 1fi-rich.

そして単一構成材料4を積層づ′ることなく、単体のま
まで焼成することのみによってシート材料に形成しても
よい。
The single component material 4 may be formed into a sheet material by simply firing it as a single component without layering it.

さらに第4図に示すように積層する半一構成材料4とし
ては、基布としてフェノール系繊維と芳香族ポリアミド
系繊維とから成る織布2を用いたものと、不織布5を用
いたものとを交互に積層して一体的に焼成加圧してシー
ト材料に形成してもよい。
Furthermore, as shown in FIG. 4, as the half-layer constituent material 4 to be laminated, there are two types: one using a woven fabric 2 made of phenolic fibers and aromatic polyamide fibers as a base fabric, and the other using a non-woven fabric 5 as a base fabric. A sheet material may be formed by laminating alternately and integrally firing and pressing the layers.

なお、上記実施例で示したシート材料を形成するに当り
、弗素樹脂シートを積層しておくことにより、耐薬品性
および耐溶剤性がさらに優れたシート材料を得ることが
できる。
Note that when forming the sheet material shown in the above examples, by laminating fluororesin sheets, a sheet material with even better chemical resistance and solvent resistance can be obtained.

以上実施例に示す如く、本発明シート材料は、フェノー
ル系繊維的70%と芳香族ポリアミド系繊維的30%と
の混紡繊維から成る基布に弗素樹脂のディスパージョン
を含浸させ、該弗素樹脂の融点温度以上で焼成加圧して
形成したものであるから、フェノール系繊維と芳香族ポ
リアミド系繊維との混紡繊維から成る基布と弗素樹脂と
が一体となっており、基布によって弗素樹脂の耐圧性を
向上し、圧縮によるクリープ(creep)を小さくす
ることができ、圧縮した場合の応力緩和を防止して、長
期に亘り安定した密封性能が得られる。
As shown in the examples above, the sheet material of the present invention is produced by impregnating a base fabric made of a blended fiber of 70% phenolic fiber and 30% aromatic polyamide fiber with a dispersion of a fluororesin. Because it is formed by firing and pressurizing at temperatures above the melting point, the base fabric made of a blend of phenolic fibers and aromatic polyamide fibers and the fluororesin are integrated, and the base fabric increases the pressure resistance of the fluororesin. It is possible to improve properties, reduce creep caused by compression, prevent stress relaxation when compressed, and obtain stable sealing performance over a long period of time.

しかも、基布を構成するフェノール系繊維および芳香族
ポリアミド系繊維が防炎性を有しており、弗素樹脂のも
つ耐熱性と相俟って優れた耐熱性を有しているので、秤
々の産業用途への基本的素材として活用できるアスベス
トフリーのシート材料となる。
Moreover, the phenolic fibers and aromatic polyamide fibers that make up the base fabric have flame retardant properties, and together with the heat resistance of fluororesin, they have excellent heat resistance. This is an asbestos-free sheet material that can be used as a basic material for industrial applications.

特に本発明では、基布としてフェノール系m1Itに芳
香族ポリアミド系繊維を混紡した混紡繊維から成る布を
用いており、基布の焼成加圧により芳香族ポリアミド系
繊維が若干軟化して、フェノール系繊維束内の空間を埋
めるので、浸透漏洩を大幅に低減したアスベストフリー
のシート材料を得ることができる。
In particular, in the present invention, a fabric made of a blend of phenolic m1It and aromatic polyamide fibers is used as the base fabric, and when the base fabric is fired and pressurized, the aromatic polyamide fibers are slightly softened and the phenolic Since it fills the spaces within the fiber bundles, an asbestos-free sheet material with significantly reduced percolation leakage can be obtained.

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

図面は本発明の一実施例を示し、 第1図はシート材料の断面図、 第2図はシート材料の製造工程図、 第3図は他の実施例を示すシート材料の断面図、第4図
はさらに他の実施例を示すシート材料の断面図である。
The drawings show one embodiment of the present invention, FIG. 1 is a sectional view of a sheet material, FIG. 2 is a manufacturing process diagram of the sheet material, FIG. 3 is a sectional view of a sheet material showing another embodiment, and FIG. 4 is a sectional view of the sheet material. The figure is a sectional view of a sheet material showing still another embodiment.

Claims (1)

【特許請求の範囲】[Claims] 1.約70重量%のフエノール系繊維と約30重量%の
芳香族ポリアミド系繊維との混紡 繊維から成る基布に弗素樹脂のディスパー ジョンを含浸させ、該弗素樹脂の融点温度 以上で前記基布を焼成加圧して形成したこ とを特徴とする シート材料。
1. A base fabric made of a blend of about 70% by weight phenolic fibers and about 30% by weight aromatic polyamide fibers is impregnated with a fluororesin dispersion, and the base fabric is fired at a temperature equal to or higher than the melting point temperature of the fluororesin. A sheet material characterized by being formed under pressure.
JP62137350A 1987-05-30 1987-05-30 Sheet material Granted JPS6345049A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62137350A JPS6345049A (en) 1987-05-30 1987-05-30 Sheet material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62137350A JPS6345049A (en) 1987-05-30 1987-05-30 Sheet material

Publications (2)

Publication Number Publication Date
JPS6345049A true JPS6345049A (en) 1988-02-26
JPH0244853B2 JPH0244853B2 (en) 1990-10-05

Family

ID=15196594

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62137350A Granted JPS6345049A (en) 1987-05-30 1987-05-30 Sheet material

Country Status (1)

Country Link
JP (1) JPS6345049A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05504306A (en) * 1989-02-02 1993-07-08 ケムファブ コーポレイション Method for manufacturing laminated PTFE-containing composite material
JP2011189309A (en) * 2010-03-16 2011-09-29 Yoshida Skt:Kk Method for producing fluororesin material, and fluororesin material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05504306A (en) * 1989-02-02 1993-07-08 ケムファブ コーポレイション Method for manufacturing laminated PTFE-containing composite material
JP2011189309A (en) * 2010-03-16 2011-09-29 Yoshida Skt:Kk Method for producing fluororesin material, and fluororesin material

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