JP4043358B2 - Heat resistant fabric - Google Patents
Heat resistant fabric Download PDFInfo
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- JP4043358B2 JP4043358B2 JP2002366333A JP2002366333A JP4043358B2 JP 4043358 B2 JP4043358 B2 JP 4043358B2 JP 2002366333 A JP2002366333 A JP 2002366333A JP 2002366333 A JP2002366333 A JP 2002366333A JP 4043358 B2 JP4043358 B2 JP 4043358B2
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- silicone rubber
- rubber layer
- weight
- fabric
- heat
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- 239000004744 fabric Substances 0.000 title claims description 18
- 229920002379 silicone rubber Polymers 0.000 claims description 19
- 239000004945 silicone rubber Substances 0.000 claims description 19
- 229920006231 aramid fiber Polymers 0.000 claims description 15
- 229920001296 polysiloxane Polymers 0.000 claims description 12
- 239000004760 aramid Substances 0.000 claims description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 5
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- 239000000835 fiber Substances 0.000 description 14
- 239000000203 mixture Substances 0.000 description 7
- 239000003054 catalyst Substances 0.000 description 6
- -1 polymetaphenylene isophthalamide Polymers 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000012210 heat-resistant fiber Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 150000001451 organic peroxides Chemical class 0.000 description 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- LVGKZTVMAHRVFR-UHFFFAOYSA-N 4-(phenoxazine-10-carbonyl)benzamide Chemical compound C1=CC(C(=O)N)=CC=C1C(=O)N1C2=CC=CC=C2OC2=CC=CC=C21 LVGKZTVMAHRVFR-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 238000007259 addition reaction Methods 0.000 description 2
- 229920003235 aromatic polyamide Polymers 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000003431 cross linking reagent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 150000002978 peroxides Chemical class 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- OXYKVVLTXXXVRT-UHFFFAOYSA-N (4-chlorobenzoyl) 4-chlorobenzenecarboperoxoate Chemical compound C1=CC(Cl)=CC=C1C(=O)OOC(=O)C1=CC=C(Cl)C=C1 OXYKVVLTXXXVRT-UHFFFAOYSA-N 0.000 description 1
- QYXVDGZUXHFXTO-UHFFFAOYSA-L 3-oxobutanoate;platinum(2+) Chemical compound [Pt+2].CC(=O)CC([O-])=O.CC(=O)CC([O-])=O QYXVDGZUXHFXTO-UHFFFAOYSA-L 0.000 description 1
- 239000004342 Benzoyl peroxide Substances 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 239000004693 Polybenzimidazole Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229920001494 Technora Polymers 0.000 description 1
- 125000003342 alkenyl group Chemical group 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000005802 health problem Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920006136 organohydrogenpolysiloxane Polymers 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- PARWUHTVGZSQPD-UHFFFAOYSA-N phenylsilane Chemical compound [SiH3]C1=CC=CC=C1 PARWUHTVGZSQPD-UHFFFAOYSA-N 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920002480 polybenzimidazole Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000004950 technora Substances 0.000 description 1
- LYDRKKWPKKEMNZ-UHFFFAOYSA-N tert-butyl benzoate Chemical compound CC(C)(C)OC(=O)C1=CC=CC=C1 LYDRKKWPKKEMNZ-UHFFFAOYSA-N 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Landscapes
- Chemical Or Physical Treatment Of Fibers (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Woven Fabrics (AREA)
- Laminated Bodies (AREA)
Description
【０００１】
【発明の属する技術分野】
本発明は、耐熱性布帛に関し、さらに詳しくは、高温の炎あるいは熱に曝露された後も適度な耐圧特性を示す耐熱性布帛に関する。
【０００２】
【従来の技術】
従来より、高温作業時に着用する耐熱性防護服の素材としては、不燃性のアスベスト繊維やガラス繊維等からなる布帛が使われていたが、環境問題(健康問題)や作業容易性（動き易さ）などの観点から、近年では、アラミド、ポリフェニレンスルフィド、ポリイミド、ポリベンズイミダゾールなどの難燃性の有機繊維が用いられることが多くなっている。
【０００３】
例えば、特開２０００−２１２８１０号公報には、パラ系アラミド繊維の不織布とメタ系アラミド繊維の不織布との複合体からなる遮熱層を有する耐熱性防護服が開示されている。
【０００４】
しかしながら、これらの有機繊維は、加熱、火炎曝露などの高温環境時に着炎することなく速やかに炭化し自己消火することから、難燃という観点で見た場合の安全性は確保された素材であるといえるものの、加熱、火炎曝露などの高温環境下で炭化により脆くなった場合、アークなどによる熱風に耐えるだけの耐圧特性を維持することが出来ず、思わぬ２次災害を引き起こすことがあるので、その対する対策が求められている。
【０００５】
【特許文献１】
特開２０００−２１２８１０号公報
【０００６】
【発明が解決しようとする課題】
本発明の目的は、上記従来技術の有する問題点を解決し、高温の炎あるいは熱に曝露された後も適度な耐圧特性を示す耐熱性布帛を提供することにある。
【０００７】
【課題を解決するための手段】
前記の課題は、アラミド繊維から構成される布帛にシリコーンゴム層が担持されている耐熱性布帛であって、下記要件を満足する耐熱性布帛により解決される。
ａ）シリコーンゴム層の厚さが５０〜２２０μｍであること。
ｂ）シリコーンゴム層が比表面積が５０ｇ／ｍ 2 以上であるシリカ粉末をベースとなるオルガノポリシロキサン１００重量部に対して１〜１００重量部含むこと。
ｃ）４００℃で２分間の高温曝露試験後の破裂強さが、ＪＩＳ Ｌ １０９６Ａ法に定められたミューレン型破裂試験において４０ｋＰａ以上であること。
【０００８】
【発明の実施の形態】
以下、本発明を詳細に説明する。
本発明で使用する耐熱繊維とは、アラミド繊維を言い、本発明の目的を損なわない範囲でアラミド繊維と共に非耐熱性繊維を用いることも可能である。
【０００９】
また、アラミド繊維の中でも優れたＬＯＩ値を示し、なおかつ繊維そのものが白色であるポリメタフェニレンイソフタルアミド繊維(メタ系のアラミド繊維)は、防護用衣料を作成するにあたり非常に有用である。さらに織物強度を向上させる目的で上記メタ系のアラミド繊維に加えて、パラ系のアラミド繊維、すなわち、ポリパラフェニレンテレフタルアミド繊維、あるいは、これに第三成分を共重合した繊維を混合させることが好ましい。共重合繊維の一例として、下記式に示すコポリパラフェニレン・３．４’オキシジフェニレンテレフタルアミドが好ましく例示される。
【００１０】
【化１】
パラ系のアラミド繊維の混合比率としては、表地を構成する全繊維に対して５重量％以上が好ましいが、パラ系のアラミド繊維は、フィブリル化を起こしやすいため、混合比率は６０重量％以下に抑えることが好ましい。
【００１２】
次に、本発明で使用するシリコーンゴム層とは、一般的にシリコーン骨格を有するゴム性の組成物であればすべて使用可能であるが、高温曝露後の耐圧性を向上させるためには、有機過酸化物硬化型オルガノポリシロキサン組成物、又は、付加反応硬化型オルガノポリシロキサン組成物に加水分解可能な官能基を有するフェニルシランを適量添加したものが好ましい。
【００１３】
該有機過酸化物硬化型オルガノポリシロキサンは、主にメチル基を組成としたアルキル基を含み、ビニル基等のアルケニル基を分子中に平均２個以上有する平均重合度が５０〜１００，０００の範囲のものが好ましい。また、硬化触媒としては、ベンゾイルパーオキサイド、ｔ−ブチルベンゾエート、ｐ−モノクロロベンゾイルパーオキサイドなどに代表される有機過酸化物が好ましく用いられる。該有機過酸化物は前記の例に捕らわれることなく、公知の有機過酸化物をすべて用いることができる。該触媒の添加量は、前記過酸化物硬化型オルガノポリシロキサン１００重量部に対して、０．１〜５重量部である。
【００１４】
また、前記の付加反応硬化型オルガノポリシロキサンには、オルガノハイドロジェンポリシロキサンを架橋剤として添加することが好ましい。該架橋剤の添加量は、前記オルガノポリシロキサン１００重量部に対して、０．１〜２００重量部である。さらに、硬化触媒としては、白金黒、塩化第二白金、白金ビスアセトアセテート等の白金触媒、パラジウム系触媒、ロジウム系触媒などが挙げられる。
【００１５】
また、本発明においては、上記シリコーンゴム層の機械的強度保持や耐熱性保持のために比表面積が５０ｇ／ｍ2以上であるシリカ粉末を使用することが必要である。該シリカ粉末の添加量はベースとなるオルガノポリシロキサン１００重量部に対して１〜１００重量部の範囲であることが必要である。
【００１６】
さらに、該シリコーンゴム層には、絶縁性を高める目的でベースとなるオルガノポリシロキサン１００重量部に対して、水酸化アルミニウムを５０〜６００重量部添加することが有用である。また、必要に応じて、酸化マグネシウム、炭酸カルシウム、酸化チタン等の顔料系無機物や、難燃剤、耐光性向上剤、剥離剤などを添加しても良い。
【００１７】
これらシリコーンゴム組成物は、シリコーンの重合度により固形状のものあるいは液状のものに分類できる。固形状のものは、ミキサーに代表されるゴム練り機を用いて均一に混合し、加熱することによりシリコーンゴム組成物を得ることができる。得られたシリコーンゴム組成物は、押出し成形などに代表される成形方法でフィルム状に加工され、繊維布帛に担持される。一方、液状のものは、混合液を直接繊維上にコーティングし加熱することによりシリコーンゴム層を得ることができる。
【００１８】
上記シリコーンゴム層の厚みは、５０〜２２０μｍの範囲にあることが肝要であり、好ましくは、１００〜１５０μｍの範囲である。該ゴム層の厚みが、５０μｍ未満であると、高温曝露後の耐圧性が不十分であり本発明の効果を得ることが出来ない。一方、ゴム層の厚みが、２２０μｍを超えると、布帛の厚みが増し、取扱い性が悪くなり、着用感を損ねる。
【００１９】
【実施例】
以下、本発明を実施例によりさらに詳細に説明するが、本発明はこれらの実施例に限定されるものではない。なお、実施例で行う試験はいずれも４００℃で２分間の高温曝露処理をした試験片を用いて実施した。
【００２０】
（１）破裂強さ：
ＪＩＳ １０９６Ａ法に定められたミューレン型破裂試験機法に準じて測定した。
【００２１】
（２）引張強さ：
ＪＩＳ １０９６Ｃ法に規定されたトラペゾイド法に準じて測定した。
【００２２】
（３）強伸度：
巾２５ｍｍ×試長１０ｃｍの試験片を作成し、インストロン型引張試験機を使用して、引張速度：５０ｍｍ／分の条件により測定する。
【００２３】
［実施例１］
ポリメタフェニレンイソフタルアミド（商標名：コーネックス、帝人（株）製）からなる短繊維とコポリパラフェニレン・３．４’オキシジフェニレンテレフタルアミド（商標名：テクノーラ、帝人（株）製）からなる短繊維を９３：７の割合でほぼ均一に混合した耐熱性繊維よりなる紡績糸（綿番手３０番）を用いて、綾織組織に織成した織物（目付：２１０ｇ／ｍ2）に、ポリオルガノシロキサンを主成分とし、該ポリオルガノシロキサン対比で１０重量部のシリカ粉末（ＳｉＯ2）を添加したシリコーンゴム層を担持せしめた。
【００２４】
尚、該シリコーンゴム層には、ポリオルガノシロキサン対比で５重量部の酸化チタンを顔料として加えた。該シリコーンゴム層の厚みは１３５μｍであった。
【００２５】
得られた耐熱性布帛の耐圧特性を表1に示す。
【００２６】
［比較例１］
実施例１において、アラミド繊維からなる綾織物に担持せしめたシリコーンゴム層の厚みを３０μｍにしたこと以外は実施例１と同様に行って耐熱性布帛を得た。得られた耐熱性布帛の耐圧特性を表1に示す。
【００２７】
［比較例２］
実施例１と同様にして得たアラミド繊維製紡績糸からなる綾織物を用い、シリコーンゴムを担持することなく、耐圧特性の試験を行った。結果を表1に示す。
【００２８】
【表１】
【発明の効果】
本発明によれば、アラミド繊維からなる耐熱性布帛の弱点である高温曝露後の耐圧性を格段に向上した安全な耐熱性布帛を提供することができる。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a heat-resistant fabric, and more particularly to a heat-resistant fabric that exhibits moderate pressure resistance even after being exposed to a high-temperature flame or heat.
[0002]
[Prior art]
Traditionally, fabrics made of non-combustible asbestos fibers or glass fibers have been used as materials for heat-resistant protective clothing worn during high-temperature work. However, environmental problems (health problems) and workability (ease of movement) In recent years, flame retardant organic fibers such as aramid, polyphenylene sulfide, polyimide, and polybenzimidazole are increasingly used.
[0003]
For example, Japanese Patent Application Laid-Open No. 2000-212810 discloses a heat-resistant protective clothing having a heat shielding layer made of a composite of a para-aramid fiber nonwoven fabric and a meta-aramid fiber nonwoven fabric.
[0004]
However, these organic fibers are carbonized quickly and without self-extinguishing in a high temperature environment such as heating and flame exposure, so that they are a material that ensures safety in terms of flame retardancy. However, if it becomes brittle due to carbonization in a high temperature environment such as heating or flame exposure, it will not be able to maintain the pressure resistance enough to withstand hot air from arcs, etc., and may cause an unexpected secondary disaster. , There is a need for countermeasures.
[0005]
[Patent Document 1]
Japanese Patent Laid-Open No. 2000-212810
[Problems to be solved by the invention]
An object of the present invention is to solve the above-mentioned problems of the prior art and to provide a heat-resistant fabric that exhibits an appropriate pressure resistance even after being exposed to a high-temperature flame or heat.
[0007]
[Means for Solving the Problems]
The above-described problem is solved by a heat-resistant fabric in which a silicone rubber layer is supported on a fabric composed of aramid fibers, which satisfies the following requirements.
a) The thickness of the silicone rubber layer is 50 to 220 μm.
b) The silicone rubber layer contains 1 to 100 parts by weight with respect to 100 parts by weight of the organopolysiloxane based on silica powder having a specific surface area of 50 g / m 2 or more.
c) The burst strength after a high-temperature exposure test at 400 ° C. for 2 minutes is 40 kPa or more in the Murren-type burst test defined in the JIS L 1096A method.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail.
The heat-resistant fiber used in the present invention refers to an aramid fiber, and a non-heat-resistant fiber can be used together with the aramid fiber as long as the object of the present invention is not impaired.
[0009]
In addition, polymetaphenylene isophthalamide fiber (meta-type aramid fiber), which exhibits an excellent LOI value among aramid fibers and is white as a fiber itself, is very useful in producing protective clothing. In addition to the above meta-based aramid fibers, in addition to the above-mentioned meta-based aramid fibers, para-based aramid fibers, that is, polyparaphenylene terephthalamide fibers, or fibers in which a third component is copolymerized may be mixed. preferable. As an example of the copolymer fiber, copolyparaphenylene 3.4′oxydiphenylene terephthalamide represented by the following formula is preferably exemplified.
[0010]
[Chemical 1]
The mixing ratio of the para-based aramid fibers is preferably 5% by weight or more with respect to all the fibers constituting the outer material. However, since the para-based aramid fibers are easily fibrillated, the mixing ratio is 60% by weight or less. It is preferable to suppress.
[0012]
Next, the silicone rubber layer used in the present invention can generally be any rubber-like composition having a silicone skeleton, but in order to improve pressure resistance after high temperature exposure, A peroxide curable organopolysiloxane composition or an addition reaction curable organopolysiloxane composition to which a suitable amount of phenylsilane having a hydrolyzable functional group is added is preferred.
[0013]
The organic peroxide-curable organopolysiloxane mainly contains an alkyl group having a methyl group as a composition, and has an average degree of polymerization of 50 to 100,000 having an average of two or more alkenyl groups such as vinyl groups in the molecule. A range is preferred. As the curing catalyst, an organic peroxide represented by benzoyl peroxide, t-butylbenzoate, p-monochlorobenzoyl peroxide, or the like is preferably used. As the organic peroxide, any known organic peroxide can be used without being trapped in the above example. The addition amount of this catalyst is 0.1-5 weight part with respect to 100 weight part of the said peroxide curable organopolysiloxane.
[0014]
Moreover, it is preferable to add organohydrogenpolysiloxane as a crosslinking agent to the addition reaction curable organopolysiloxane. The addition amount of the crosslinking agent is 0.1 to 200 parts by weight with respect to 100 parts by weight of the organopolysiloxane. Furthermore, examples of the curing catalyst include platinum catalysts such as platinum black, diplatinum chloride, and platinum bisacetoacetate, palladium-based catalysts, and rhodium-based catalysts.
[0015]
In the present invention, it is necessary to use silica powder having a specific surface area of 50 g / m 2 or more in order to maintain the mechanical strength and heat resistance of the silicone rubber layer. The addition amount of the silica powder needs to be in the range of 1 to 100 parts by weight with respect to 100 parts by weight of the base organopolysiloxane.
[0016]
Further, it is useful to add 50 to 600 parts by weight of aluminum hydroxide to 100 parts by weight of the organopolysiloxane as a base for the purpose of enhancing the insulation property to the silicone rubber layer. Moreover, you may add pigment type inorganic substances, such as magnesium oxide, a calcium carbonate, a titanium oxide, a flame retardant, a light resistance improver, a peeling agent, etc. as needed.
[0017]
These silicone rubber compositions can be classified as solid or liquid depending on the degree of polymerization of the silicone. A solid material can be uniformly mixed using a rubber kneader typified by a mixer and heated to obtain a silicone rubber composition. The obtained silicone rubber composition is processed into a film by a molding method typified by extrusion molding and is supported on a fiber fabric. On the other hand, in the case of liquid, a silicone rubber layer can be obtained by directly coating the mixed solution on the fiber and heating.
[0018]
It is important that the silicone rubber layer has a thickness in the range of 50 to 220 μm, and preferably in the range of 100 to 150 μm. When the thickness of the rubber layer is less than 50 μm, the pressure resistance after high temperature exposure is insufficient and the effects of the present invention cannot be obtained. On the other hand, if the thickness of the rubber layer exceeds 220 μm, the thickness of the fabric increases, handling becomes worse, and the wearing feeling is impaired.
[0019]
【Example】
EXAMPLES Hereinafter, although an Example demonstrates this invention further in detail, this invention is not limited to these Examples. In addition, all the tests performed in an Example were implemented using the test piece which performed the high temperature exposure process for 2 minutes at 400 degreeC.
[0020]
(1) Burst strength:
The measurement was performed according to the Murren type burst tester method defined in the JIS 1096A method.
[0021]
(2) Tensile strength:
It measured according to the trapezoid method prescribed | regulated to JIS1096C method.
[0022]
(3) Strong elongation:
A test piece having a width of 25 mm and a test length of 10 cm is prepared and measured using an Instron type tensile tester under a tensile speed of 50 mm / min.
[0023]
[Example 1]
It consists of short fibers made of polymetaphenylene isophthalamide (trade name: Conex, manufactured by Teijin Limited) and copolyparaphenylene 3.4'oxydiphenylene terephthalamide (trade name: Technora, manufactured by Teijin Limited). Using a spun yarn (cotton count 30) composed of heat-resistant fibers in which short fibers are mixed almost uniformly at a ratio of 93: 7, a polyorganosiloxane is formed into a woven fabric (weight per unit: 210 g / m 2 ) woven into a twill structure. And a silicone rubber layer to which 10 parts by weight of silica powder (SiO 2 ) was added relative to the polyorganosiloxane was supported.
[0024]
The silicone rubber layer was added with 5 parts by weight of titanium oxide as a pigment relative to the polyorganosiloxane. The thickness of the silicone rubber layer was 135 μm.
[0025]
The pressure resistance characteristics of the obtained heat resistant fabric are shown in Table 1.
[0026]
[Comparative Example 1]
A heat resistant fabric was obtained in the same manner as in Example 1 except that the thickness of the silicone rubber layer supported on the twill fabric made of aramid fibers was changed to 30 μm. The pressure resistance characteristics of the obtained heat resistant fabric are shown in Table 1.
[0027]
[Comparative Example 2]
A twill fabric made of spun yarn made of aramid fibers obtained in the same manner as in Example 1 was used, and pressure resistance characteristics were tested without supporting silicone rubber. The results are shown in Table 1.
[0028]
[Table 1]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the safe heat resistant fabric which improved the pressure resistance after the high temperature exposure which is a weak point of the heat resistant fabric which consists of an aramid fiber markedly can be provided.
Claims (1)
ａ）シリコーンゴム層の厚さが５０〜２２０μｍであること。a) The thickness of the silicone rubber layer is 50 to 220 μm.
ｂ）シリコーンゴム層が比表面積が５０ｇ／ｍb) Silicone rubber layer has a specific surface area of 50 g / m 22 以上であるシリカ粉末をベースとなるオルガノポリシロキサン１００重量部に対して１〜１００重量部含むこと。1 to 100 parts by weight of the above silica powder is contained with respect to 100 parts by weight of the organopolysiloxane as a base.
ｃ）４００℃で２分間の高温曝露試験後の破裂強さが、ＪＩＳ Ｌ １０９６Ａ法に定められたミューレン型破裂試験において４０ｋＰａ以上であること。c) The burst strength after a high-temperature exposure test at 400 ° C. for 2 minutes is 40 kPa or more in the Murren-type burst test defined in the JIS L 1096A method.
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| JP2002366333A JP4043358B2 (en) | 2002-12-18 | 2002-12-18 | Heat resistant fabric |
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| JP4043358B2 true JP4043358B2 (en) | 2008-02-06 |
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| CN103924355A (en) * | 2014-02-18 | 2014-07-16 | 江苏鸿顺合纤科技有限公司 | Polyamide fiber fabric with flame-retardant and heat-resistant functions |
| CN103924359A (en) * | 2014-02-18 | 2014-07-16 | 江苏鸿顺合纤科技有限公司 | Polyamide fiber fabric with high-temperature-resistant and flame-retardant functions |
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| CN103924355A (en) * | 2014-02-18 | 2014-07-16 | 江苏鸿顺合纤科技有限公司 | Polyamide fiber fabric with flame-retardant and heat-resistant functions |
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| CN105708290A (en) * | 2016-03-28 | 2016-06-29 | 绵阳福乐明科技有限公司 | Intelligent heat supply carpet |
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| CN105708291A (en) * | 2016-04-29 | 2016-06-29 | 句容兴云纺织品有限公司 | Mosquito-repelling carpet |
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| JP2004197260A (en) | 2004-07-15 |
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