JPH02299407A - Removal of fire-retardant coating of wire and cable - Google Patents
Removal of fire-retardant coating of wire and cableInfo
- Publication number
- JPH02299407A JPH02299407A JP1119353A JP11935389A JPH02299407A JP H02299407 A JPH02299407 A JP H02299407A JP 1119353 A JP1119353 A JP 1119353A JP 11935389 A JP11935389 A JP 11935389A JP H02299407 A JPH02299407 A JP H02299407A
- Authority
- JP
- Japan
- Prior art keywords
- cable
- fire
- fire spread
- spread prevention
- prevention coating
- 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
Links
- 239000011248 coating agent Substances 0.000 title claims abstract description 39
- 238000000576 coating method Methods 0.000 title claims abstract description 39
- 239000003063 flame retardant Substances 0.000 title abstract description 9
- 230000002265 prevention Effects 0.000 claims description 36
- 238000000034 method Methods 0.000 claims description 13
- -1 alkyl glycol ether Chemical compound 0.000 claims description 7
- 150000003014 phosphoric acid esters Chemical class 0.000 claims description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 abstract description 11
- 229920002554 vinyl polymer Polymers 0.000 abstract description 11
- 239000007788 liquid Substances 0.000 abstract description 8
- 230000002411 adverse Effects 0.000 abstract description 4
- WFSMVVDJSNMRAR-UHFFFAOYSA-N 2-[2-(2-ethoxyethoxy)ethoxy]ethanol Chemical compound CCOCCOCCOCCO WFSMVVDJSNMRAR-UHFFFAOYSA-N 0.000 abstract description 3
- 229940028356 diethylene glycol monobutyl ether Drugs 0.000 abstract description 3
- 238000011156 evaluation Methods 0.000 abstract description 3
- JCGNDDUYTRNOFT-UHFFFAOYSA-N oxolane-2,4-dione Chemical compound O=C1COC(=O)C1 JCGNDDUYTRNOFT-UHFFFAOYSA-N 0.000 abstract description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 abstract 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 abstract 2
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 12
- 239000000243 solution Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 10
- 239000003973 paint Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 6
- 239000000839 emulsion Substances 0.000 description 5
- 239000000835 fiber Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000011256 inorganic filler Substances 0.000 description 3
- 229910003475 inorganic filler Inorganic materials 0.000 description 3
- 239000004014 plasticizer Substances 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
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- XXJWXESWEXIICW-UHFFFAOYSA-N diethylene glycol monoethyl ether Chemical compound CCOCCOCCO XXJWXESWEXIICW-UHFFFAOYSA-N 0.000 description 2
- 229940075557 diethylene glycol monoethyl ether Drugs 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 description 2
- DQWPFSLDHJDLRL-UHFFFAOYSA-N triethyl phosphate Chemical compound CCOP(=O)(OCC)OCC DQWPFSLDHJDLRL-UHFFFAOYSA-N 0.000 description 2
- HQUQLFOMPYWACS-UHFFFAOYSA-N tris(2-chloroethyl) phosphate Chemical compound ClCCOP(=O)(OCCCl)OCCCl HQUQLFOMPYWACS-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- SBASXUCJHJRPEV-UHFFFAOYSA-N 2-(2-methoxyethoxy)ethanol Chemical compound COCCOCCO SBASXUCJHJRPEV-UHFFFAOYSA-N 0.000 description 1
- YEVQZPWSVWZAOB-UHFFFAOYSA-N 2-(bromomethyl)-1-iodo-4-(trifluoromethyl)benzene Chemical compound FC(F)(F)C1=CC=C(I)C(CBr)=C1 YEVQZPWSVWZAOB-UHFFFAOYSA-N 0.000 description 1
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
- COBPKKZHLDDMTB-UHFFFAOYSA-N 2-[2-(2-butoxyethoxy)ethoxy]ethanol Chemical compound CCCCOCCOCCOCCO COBPKKZHLDDMTB-UHFFFAOYSA-N 0.000 description 1
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 1
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 description 1
- HCGFUIQPSOCUHI-UHFFFAOYSA-N 2-propan-2-yloxyethanol Chemical compound CC(C)OCCO HCGFUIQPSOCUHI-UHFFFAOYSA-N 0.000 description 1
- 239000004114 Ammonium polyphosphate Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 239000007983 Tris buffer Substances 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 235000019826 ammonium polyphosphate Nutrition 0.000 description 1
- 229920001276 ammonium polyphosphate Polymers 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- WHHGLZMJPXIBIX-UHFFFAOYSA-N decabromodiphenyl ether Chemical compound BrC1=C(Br)C(Br)=C(Br)C(Br)=C1OC1=C(Br)C(Br)=C(Br)C(Br)=C1Br WHHGLZMJPXIBIX-UHFFFAOYSA-N 0.000 description 1
- UJSSNDKVUQJEGE-UHFFFAOYSA-N dichloro propyl phosphate Chemical compound CCCOP(=O)(OCl)OCl UJSSNDKVUQJEGE-UHFFFAOYSA-N 0.000 description 1
- ASMQGLCHMVWBQR-UHFFFAOYSA-M diphenyl phosphate Chemical compound C=1C=CC=CC=1OP(=O)([O-])OC1=CC=CC=C1 ASMQGLCHMVWBQR-UHFFFAOYSA-M 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 229910052919 magnesium silicate Inorganic materials 0.000 description 1
- 235000019792 magnesium silicate Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- YAFOVCNAQTZDQB-UHFFFAOYSA-N octyl diphenyl phosphate Chemical compound C=1C=CC=CC=1OP(=O)(OCCCCCCCC)OC1=CC=CC=C1 YAFOVCNAQTZDQB-UHFFFAOYSA-N 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 235000010215 titanium dioxide Nutrition 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- JLGLQAWTXXGVEM-UHFFFAOYSA-N triethylene glycol monomethyl ether Chemical compound COCCOCCOCCO JLGLQAWTXXGVEM-UHFFFAOYSA-N 0.000 description 1
- WVLBCYQITXONBZ-UHFFFAOYSA-N trimethyl phosphate Chemical compound COP(=O)(OC)OC WVLBCYQITXONBZ-UHFFFAOYSA-N 0.000 description 1
- WTLBZVNBAKMVDP-UHFFFAOYSA-N tris(2-butoxyethyl) phosphate Chemical compound CCCCOCCOP(=O)(OCCOCCCC)OCCOCCCC WTLBZVNBAKMVDP-UHFFFAOYSA-N 0.000 description 1
- ZPEJZWGMHAKWNL-UHFFFAOYSA-L zinc;oxalate Chemical compound [Zn+2].[O-]C(=O)C([O-])=O ZPEJZWGMHAKWNL-UHFFFAOYSA-L 0.000 description 1
Landscapes
- Removal Of Insulation Or Armoring From Wires Or Cables (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は、電線・ケーブル外周に設けられた延焼防止
被覆を効率的に剥離する方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for efficiently peeling off a fire spread prevention coating provided on the outer periphery of an electric wire or cable.
〔従来の技術］
電線・ケーブルの延焼を防止するための一方法として、
シース外周に延焼防止塗料を塗布し、乾燥させて延焼防
止被覆を形成する方法が採用されている。延焼防止塗料
は一般に水性エマルジョンをベースに有機難燃剤、無機
充填剤、不燃性繊維、可塑剤等を加λたものであり、こ
れらの延焼防止塗料を電線・ケーブルのシースの外周に
塗布し、乾燥するとシースと接着した延焼防止被覆が形
成される。電線・ケーブルのシースとしては、ポリエチ
レン、ビニル、クロロブレンゴム、シリコーンゴム等が
用いられているが、特にビニルシースと延焼防止塗料と
は良く接着する。このため電線・ケーブルを撤去する場
合に延焼防止被覆を剥離する作業が困難になっている。[Prior art] As a method to prevent the spread of fire in electric wires and cables,
A method has been adopted in which a fire spread prevention coating is applied to the outer periphery of the sheath and dried to form a fire spread prevention coating. Fire spread prevention paints are generally water-based emulsions with organic flame retardants, inorganic fillers, noncombustible fibers, plasticizers, etc. When dried, a fire-preventing coating is formed that adheres to the sheath. Polyethylene, vinyl, chloroprene rubber, silicone rubber, etc. are used as sheaths for electric wires and cables, and vinyl sheaths and fire spread prevention paints particularly adhere well. This makes it difficult to remove the fire spread prevention coating when removing electric wires and cables.
一般に、塗料を剥離する方法としては、アルカリ性水溶
液を用いる方法、あるいはジクロロメタンを主材料とし
た剥離剤を用いる方法がある。Generally, methods for removing paint include a method using an alkaline aqueous solution or a method using a remover mainly composed of dichloromethane.
［発明が解決しようとする課題］
ところで、アルカリ性水溶液を用いる方法は剥離効果が
殆どない。また、ジクロロメタンを主材料とした剥離剤
を用いる方法は、延焼防止被覆を膨潤させると共に、ケ
ーブルシースをも膨潤させるという問題がある。すなわ
ち、電線・ケーブルは複数本がグループとなって布設さ
れ、これらを一括して延焼防止被覆が設けられるが、グ
ループの中の一部の電線・ケーブルのみの撤去および張
替λの場合、全体の延焼防止被覆を剥離してから撤去お
よび張替えが行なわれ、再度延焼防止被覆が設けられる
ことになる。このように、延焼防止塗料の剥離に際して
は撤去する電線・ケーブルのみならず、その後もさらに
使用される電線・ケーブルにも剥離剤の影響が及ぶこと
になるので、電線・ケーブルシースを膨潤させない剥離
剤が望まれている。[Problems to be Solved by the Invention] By the way, the method using an alkaline aqueous solution has almost no peeling effect. Furthermore, the method using a release agent mainly composed of dichloromethane has the problem that it swells the fire spread prevention coating and also swells the cable sheath. In other words, multiple electric wires/cables are laid in groups, and a fire spread prevention coating is applied to all of them, but if only some of the electric wires/cables in the group are removed and re-covered, the whole After the fire spread prevention coating is peeled off, it is removed and replaced, and the fire spread prevention coating is reinstalled. In this way, when removing the fire spread prevention paint, the remover will not only affect the wires and cables that are being removed, but also the wires and cables that will be used afterward, so it is necessary to remove the paint without causing the wires or cable sheaths to swell. A drug is desired.
また、揮発性が少なく、毒性のないものが好ましく、さ
らに作業の安全性から考えて常温で剥離作業が可能であ
るものが望まれている。In addition, it is preferable that the material has low volatility and is non-toxic, and from the viewpoint of work safety, it is desired that the material can be removed at room temperature.
この発明は、このような点に鑑みてなされたもので、剥
離性、安全性に優れ、しかも電線・ケーブルシースに悪
影響を与えずに常温での剥離が可能である電線・ケーブ
ル延長防止被覆の剥離方法の提供を目的とする。This invention was made in view of these points, and provides a wire/cable extension prevention coating that has excellent peelability and safety, and can be peeled off at room temperature without adversely affecting the wire/cable sheath. The purpose is to provide a peeling method.
［課題を解決するための手段］
この発明の特許請求の範囲第１項の発明の剥離方法は、
電線・ケーブル上に設けられた延焼防止被覆にアルキル
グリコールエーテルを浸透させ、しかる後、延焼防止被
覆を剥離することを特徴とするものである。[Means for Solving the Problems] The peeling method of the invention set forth in claim 1 of this invention is as follows:
The method is characterized in that alkyl glycol ether is infiltrated into a fire spread prevention coating provided on electric wires/cables, and then the fire spread prevention coating is peeled off.
また、この発明の特許請求の範囲第２項の発明は、電線
・ケーブル上に設けられた延焼防止被覆にりん酸エステ
ルを浸透させ、しかる後、延焼防止被覆を剥離すること
を特徴とするものである。Further, the invention of claim 2 of this invention is characterized in that a phosphate ester is infiltrated into a fire spread prevention coating provided on an electric wire/cable, and then the fire spread prevention coating is peeled off. It is.
［実 施 例］
この発明が適用される延焼防止被覆を形成する塗料とし
ては、水性エマルジョンをベースに有機難燃剤、難燃助
剤、無機充填剤、不燃性繊維、可塑剤などを加えたもの
が代表例として挙げられる。水性エマルジョンとしては
酢酸ビニル系エマルジョン、アクリル系エマルジョンな
どが、有機難燃剤としては塩素化パラフィン、デカブロ
モジフェニルオキサイド、ポリりん酸アンモニウムなど
が、難燃助剤としては三酸化アンチモン、はう酸亜鉛な
どが、無機充填剤としては水和アルミナ、炭酸カルシウ
ム、含水ケイ酸マグネシウム。[Example] The paint forming the fire spread prevention coating to which this invention is applied is a water-based emulsion based paint containing organic flame retardants, flame retardant aids, inorganic fillers, nonflammable fibers, plasticizers, etc. is cited as a representative example. Aqueous emulsions include vinyl acetate emulsions and acrylic emulsions; organic flame retardants include chlorinated paraffin, decabromodiphenyl oxide, and ammonium polyphosphate; flame retardant aids include antimony trioxide and zinc oxalate. Examples of inorganic fillers include hydrated alumina, calcium carbonate, and hydrated magnesium silicate.
クレー、チタン白、タルクなどが、不燃性繊維としては
セラミック繊維、フェノール繊維、ガラス繊維などが、
可塑剤としてはトリス（β−クロロエチル）ホスフェー
ト、液状塩素化パラフィンなどがそれぞれ挙げられる。Clay, titanium white, talc, etc. are used, and non-combustible fibers include ceramic fiber, phenol fiber, glass fiber, etc.
Examples of the plasticizer include tris(β-chloroethyl) phosphate and liquid chlorinated paraffin.
この特許請求の範囲第１項の発明のアルキルグリコール
エーテルは、延焼防止被覆を膨潤させる剥離液として機
能するものであり、そのまま、あるいは他の材料と混合
して延焼防止被覆外周に塗布することにより浸透させる
ことができる。The alkyl glycol ether of the invention of claim 1 functions as a stripping liquid that swells the fire spread prevention coating, and can be applied as it is or mixed with other materials to the outer periphery of the fire spread prevention coating. can be penetrated.
アルキルグリコールエーテルの具体例としては、エチレ
ングリコールモノメチルエーテル、エチレングリコール
モノエチルエーテル、エチレングリコールモノイソプロ
ビルエーテル、エチレングリコールモノブチルエーテル
１ジエチレングリコールモノメチルエーテル、ジエチレ
ングリコールモノエチルエーテル、ジエチレングリコー
ルモノブチルエーテル、トリエチレングリコールモノメ
チルエーテル、トリエチレングリコールモノエチルエー
テル、トリエチレングリコールモノブチルエーテルなど
が挙げられる。これらのうち揮発性の点から分子量１０
０以上のものが好ましい。Specific examples of alkyl glycol ethers include ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monoisopropyl ether, ethylene glycol monobutyl ether 1 diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, and triethylene glycol monomethyl ether. , triethylene glycol monoethyl ether, triethylene glycol monobutyl ether, and the like. Among these, the molecular weight is 10 from the viewpoint of volatility.
It is preferably 0 or more.
これらは電線・ケーブルシースに悪影響を及ぼさずに室
温での剥離効果を有する。These have a stripping effect at room temperature without adversely affecting the wire/cable sheath.
また、この特許請求の範囲第２項の発明のりん酸エステ
ルは延焼防止被覆を膨潤させる剥離液として機能するも
のであり、そのまま、あるいは他の材料と混合して延焼
防止被覆の外周に塗布することにより浸透させることが
できる。Further, the phosphoric acid ester of the invention of claim 2 functions as a stripping liquid that swells the fire spread prevention coating, and can be applied to the outer periphery of the fire spread prevention coating as it is or mixed with other materials. It can be penetrated by this.
りん酸エステルの具体例としては、トリメチルホスフェ
ート、トリエチルホスフェート、トリブチルホスフェー
ト、トリオクチルホスフェート。Specific examples of phosphoric acid esters include trimethyl phosphate, triethyl phosphate, tributyl phosphate, and trioctyl phosphate.
トリブトキシエチルホスフェート、トリス（β−クロロ
エチル）ホスフェート、トリスジクロロプロピルホスフ
ェート、トリクレジルホスフェート、タレジルジフェニ
ルホスフェート、オクチルジフェニルホスフェート、キ
シレニルジフェニルホスフェートなどが挙げられる。こ
れらのうち剥離効果の点から分子量３００以下のものが
好ましい。これらは電線・ケーブルシースに悪影響を及
ぼさずに室温での剥離効果を有する。Examples include tributoxyethyl phosphate, tris (β-chloroethyl) phosphate, tris dichloropropyl phosphate, tricresyl phosphate, talesyl diphenyl phosphate, octyldiphenyl phosphate, xylenyl diphenyl phosphate. Among these, those having a molecular weight of 300 or less are preferred from the viewpoint of peeling effect. These have a stripping effect at room temperature without adversely affecting the wire/cable sheath.
以下、具体的な実施例を比較例と共に説明する。先ず、
この発明の特許請求の範囲第１項の発明には、実施例１
〜６の６例があり、比較例１と共に説明する。Hereinafter, specific examples will be described together with comparative examples. First of all,
The invention of claim 1 of this invention includes Example 1
There are six examples, 6 to 6, which will be explained together with Comparative Example 1.
第１表に示すように、２種類の延長防止塗料Ａ、Ｂを調
整し、これをとニルシースケーブル（外径１２ｍｍ）の
外周に乾燥後の厚さが１．５ｍｍとなるように塗布し、
この塗布後室部で１２０時間乾燥して延焼防止被覆を形
成した。As shown in Table 1, two types of extension prevention paints A and B were prepared and applied to the outer periphery of a Nil-sheathed cable (outer diameter 12 mm) to a dry thickness of 1.5 mm. ,
After this application, it was dried in a chamber for 120 hours to form a fire spread prevention coating.
このケーブルを試料とし、第２表に示すような剥離液ａ
−ｄ中にそれぞれ浸漬し、延焼防止被覆ととニルシー
スとの剥離状況およびビニルシースの特性について評価
した。この結果を纏めて第２表に示した。Using this cable as a sample, apply stripping solution a as shown in Table 2.
-d, respectively, and the peeling state between the fire spread prevention coating and the vinyl sheath and the characteristics of the vinyl sheath were evaluated. The results are summarized in Table 2.
この第２表から明らかな通り、実施例１．実施例４の剥
離液ａのジエチレングリコールモノエチルエーテルの場
合に３２〜４０時間、実施例２゜実施例５の剥離液すの
ジエチレングリコールモノブチルエーテルの場合３５〜
４４時間、実施例３、実施例６の剥離液Ｃのトリエチレ
ングリコールモノエチルエーテルの場合は４０〜４８時
間浸漬すれば容易に剥離を行なえることになる。このよ
うに剥離までの時間が異なるのは、剥離液の延焼防止被
覆への浸透性が異なるためで、−ｅに分子量の低いもの
ほど浸透速度が早く、剥離効果に優れることになる。ま
た、この発明の特許請求の範囲第１項の発明の剥離液を
使用した場合は、ビニルシースへの影響は殆どなく、引
張強さおよび伸びの低下は極めて少ない。As is clear from this Table 2, Example 1. 32 to 40 hours in the case of diethylene glycol monoethyl ether in the stripping solution a of Example 4, and 35 to 40 hours in the case of diethylene glycol monobutyl ether in the stripping solution of Example 2 and Example 5.
In the case of triethylene glycol monoethyl ether as stripping solution C in Examples 3 and 6, stripping can be easily performed by soaking for 44 hours, or for 40 to 48 hours. The reason why the time required for peeling is different is that the permeability of the peeling liquid to the fire spread prevention coating is different, and the lower the molecular weight of -e, the faster the permeation rate and the better the peeling effect. Further, when the stripping liquid of the invention set forth in claim 1 of the present invention is used, there is almost no effect on the vinyl sheath, and the decrease in tensile strength and elongation is extremely small.
これに対し、比較例１の剥離液ｄのジクロロメタンを使
用した場合、剥離は容易に行なえるがビニルシースを膨
潤させることから、引張強さの低下が大きく、やわらか
くなって伸びが大になる。On the other hand, when dichloromethane is used as stripping solution d in Comparative Example 1, stripping can be easily performed, but since the vinyl sheath swells, the tensile strength decreases significantly and it becomes soft and elongated.
次に、この発明の特許請求の範囲第２項の発明について
説明する。この例では、実施例が６例あり、実施例７〜
１２および比較例２と共に説明する。Next, the invention of claim 2 of this invention will be explained. In this example, there are six examples, examples 7 to 7.
This will be explained together with Comparative Example 2 and Comparative Example 2.
この発明においても第１表に示すように２種類の延焼防
止塗料Ａ、Ｂを調整し、これをビニルシースケーブル（
外径１２ｍｍ）の外周に乾燥後の厚さが１．５ｍｍとな
るように塗布し、塗布後室部で１２０時間乾燥して延焼
防止被覆を形成した。このケーブルを第３表に示すよう
な剥離液ｄ−ｇ中に浸漬し、延焼防止被覆ととニルシー
スとの剥離状況およびとニルシースの特性について評価
した。この結果を合せて第３表に示した。In this invention as well, as shown in Table 1, two types of fire spread prevention paints A and B were adjusted and applied to vinyl sheathed cables (
The mixture was coated on the outer periphery of the tube (outer diameter: 12 mm) so that the thickness after drying was 1.5 mm, and after coating, it was dried in a chamber for 120 hours to form a fire spread prevention coating. This cable was immersed in a stripping solution d-g as shown in Table 3, and the peeling status between the fire spread prevention coating and the Nil sheath and the characteristics of the Nil sheath were evaluated. The results are shown in Table 3.
この第３表から明らかなとおり、実施例７゜１０の剥離
液ｅのトルメチルホスフェートの場合は３２〜４０時間
、実施例８，１１の剥離液ｆのトリエチルホスフェート
の場合は３４〜４２時間、実施例９，１２の剥離液ｇの
トリブチルホスフェートの場合は４０〜４８時間浸漬す
れば容易に剥離を行なえることになる。このように剥離
までの時間が異なるのは剥離液の延焼防止被覆への浸透
性が異なるためで、一般に分子量の低いものほど浸透速
度が早く０、剥離効果に優れることになる。As is clear from Table 3, in the case of tolumethyl phosphate as the stripping solution e in Examples 7 and 10, it was 32 to 40 hours, and in the case of triethyl phosphate in the stripping solution f in Examples 8 and 11, it was 34 to 42 hours. In the case of tributyl phosphate as the stripping solution g in Examples 9 and 12, stripping can be easily carried out by immersion for 40 to 48 hours. The reason for this difference in time until peeling is due to the difference in the permeability of the peeling liquid to the fire spread prevention coating, and generally speaking, the lower the molecular weight, the faster the permeation rate, and the better the peeling effect.
また、この発明の特許請求の範囲第２項の発明の剥離液
を使用した場合は、ビニルシースへの影響は殆どなく、
引張強さおよび伸びの低下は極めて少ない。Moreover, when the stripping liquid of the invention of claim 2 of this invention is used, there is almost no effect on the vinyl sheath,
The decrease in tensile strength and elongation is extremely small.
これに対し、比較例２の剥離液ｄのジクロロメタンを使
用した場合、剥離は容易に行なえるがとニルシースを膨
潤させることから、引張強さの低下が大きく、やわらか
くなって伸びが大になる。On the other hand, when dichloromethane is used as stripping solution d in Comparative Example 2, stripping is easy, but since it swells the nil sheath, the tensile strength decreases significantly and it becomes soft and elongated.
（以下余白）
第 ２ 表 評価結果
第 ３ 表 評価結果
［発明の効果］
以上説明してきた通り、この発明によればケーブルシー
スに悪影響を与久ることなく延焼防止被覆の剥離を容易
に行うことが可能となる。 また、この発明で使用する
剥離液は、室温で十分な剥離効果を有すると共に、揮発
性、毒性が殆どなく安全性に優れたものである。(Leaving space below) Table 2 Evaluation Results Table 3 Evaluation Results [Effects of the Invention] As explained above, according to the present invention, the fire spread prevention coating can be easily peeled off without having any negative impact on the cable sheath. becomes possible. Further, the stripping solution used in the present invention has a sufficient stripping effect at room temperature, has little volatility and toxicity, and is excellent in safety.
Claims (2)
ルキルグリコールエーテルを浸透させ、しかる後、延焼
防止被覆を剥離することを特徴とする電線・ケーブル延
焼防止被覆の剥離方法。(1) A method for removing a fire spread prevention coating for electric wires and cables, which comprises impregnating an alkyl glycol ether into a fire spread prevention coating provided on an electric wire or cable, and then peeling off the fire spread prevention coating.
ん酸エステルを浸透させ、しかる後、延焼防止被覆を剥
離することを特徴とする電線・ケーブル延焼防止被覆の
剥離方法。(2) A method for removing a fire spread prevention coating for electric wires and cables, which comprises permeating a phosphoric acid ester into the fire spread prevention coating provided on the electric wire or cable, and then peeling off the fire spread prevention coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1119353A JPH0687620B2 (en) | 1989-05-12 | 1989-05-12 | Peeling method for wire / cable spread prevention coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1119353A JPH0687620B2 (en) | 1989-05-12 | 1989-05-12 | Peeling method for wire / cable spread prevention coating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02299407A true JPH02299407A (en) | 1990-12-11 |
| JPH0687620B2 JPH0687620B2 (en) | 1994-11-02 |
Family
ID=14759393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1119353A Expired - Lifetime JPH0687620B2 (en) | 1989-05-12 | 1989-05-12 | Peeling method for wire / cable spread prevention coating |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0687620B2 (en) |
-
1989
- 1989-05-12 JP JP1119353A patent/JPH0687620B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0687620B2 (en) | 1994-11-02 |
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