WO2011043129A1 - 難燃性樹脂シート及びそれを用いたフラットケーブル - Google Patents
難燃性樹脂シート及びそれを用いたフラットケーブル Download PDFInfo
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- WO2011043129A1 WO2011043129A1 PCT/JP2010/063962 JP2010063962W WO2011043129A1 WO 2011043129 A1 WO2011043129 A1 WO 2011043129A1 JP 2010063962 W JP2010063962 W JP 2010063962W WO 2011043129 A1 WO2011043129 A1 WO 2011043129A1
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- flame
- mass
- resin sheet
- flat cable
- resin
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0869—Acids or derivatives thereof
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
- C08L71/08—Polyethers derived from hydroxy compounds or from their metallic derivatives
- C08L71/10—Polyethers derived from hydroxy compounds or from their metallic derivatives from phenols
- C08L71/12—Polyphenylene oxides
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/42—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes polyesters; polyethers; polyacetals
- H01B3/421—Polyesters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/08—Flat or ribbon cables
- H01B7/0838—Parallel wires, sandwiched between two insulating layers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
Definitions
- the present invention relates to a flame retardant resin sheet that can be suitably used as a coating material for a flat cable, particularly as a low dielectric layer, and a flexible flat cable using the flame retardant resin sheet.
- a multi-core flat flexible flat cable is used as an electric wire for internal wiring of electronic equipment.
- a flat cable is manufactured by sandwiching a plurality of conductors in parallel between two insulating films and fusing the insulating films together to integrate them.
- This insulating film generally has an adhesive layer in contact with a conductor and a resin film on the outside thereof.
- As the resin film a biaxially stretched polyethylene terephthalate (PET) film having excellent mechanical properties and electrical properties is widely used.
- Flat cables are also used as wiring cables for high-speed transmission of electronic devices such as liquid crystal displays and plasma displays.
- a shield layer (metal layer) is provided outside the insulating layer for noise suppression.
- the characteristic impedance 100 ⁇ , which is the same as the impedance of the high-speed digital signal transmission / reception IC.
- the capacitance which is a factor of characteristic impedance, it is necessary to lower the dielectric constant of the insulating layer, and a low dielectric layer is used in addition to the adhesive layer and the resin film.
- Patent Document 1 discloses a flexible flat cable in which a foamed insulator with an adhesive layer is laminated on both sides of a conductor and a metal layer with a conductive adhesive layer is provided on the outside thereof. Since the foamed insulator has a lower dielectric constant than the conventional insulator, the capacitance can be controlled.
- Patent Document 2 includes a conductor, an insulating layer covering both sides of the conductor, a low dielectric layer provided outside the insulating layer, and a shield layer provided outside the low dielectric layer,
- a flat cable whose main component is a resin composition having a low dielectric layer made of a polyolefin resin is disclosed.
- Patent Document 3 discloses a flat cable having a configuration similar to that of Patent Document 2 and using a polycarbonate resin, a modified polyphenylene ether resin, a polyphenylene sulfide resin, or the like as a low dielectric layer.
- the low dielectric layer also needs flexibility and bending workability. Since the foamed insulator used in Patent Document 1 has low strength, it may be buckled during bending and electrical characteristics may deteriorate.
- flat cables have applications that require a high level of flame retardancy, and flame retardance such as the vertical flame test (VW-1 test) of the US UL standard is specified.
- flame retardant such as the vertical flame test (VW-1 test) of the US UL standard.
- a flame retardant a brominated flame retardant, a halogen flame retardant such as a chlorine flame retardant, or a phosphorus flame retardant,
- non-halogen flame retardants such as nitrogen flame retardants.
- the polyolefin resin used in the low dielectric layer of Patent Document 2 has low flame retardancy, and a large amount of flame retardant needs to be added to satisfy the flammability standards.
- a non-halogen flame retardant when used, it is necessary to add a larger amount of flame retardant than when a halogen flame retardant is used. As a result, the flexibility of the low dielectric layer is lowered.
- the thickness of the low dielectric layer according to the conductor width, insulating film thickness, shield structure, and the like. In this case, it is necessary to make the low dielectric layer thin, and a low dielectric layer that can be extruded thinly is required.
- the resin such as polycarbonate used for the low dielectric layer of Patent Document 3 has sufficient flame retardancy, but since it is a hard material, it is difficult to extrude thinly and a thin film cannot be obtained.
- an object of the present invention is to provide a flame-retardant resin sheet that can reduce the dielectric constant and is excellent in flexibility, flame retardancy, and thin-wall processability, and a flat cable using the same.
- This flat cable can be suitably used particularly as a cable for high-speed transmission.
- the present invention includes a resin component containing 5% by mass to 75% by mass of polyphenylene ether, 5% by mass to 40% by mass of a thermoplastic elastomer, and 20% by mass to 90% by mass of a polyolefin resin, and 100 parts by mass of the resin component.
- a flame-retardant resin sheet containing 5 to 100 parts by mass of one or both of a phosphorus-based flame retardant and a nitrogen-based flame retardant (first invention of the present application).
- the dielectric constant of the flame retardant resin sheet can be lowered and the flame retardancy can be improved.
- the polyolefin resin flexibility can be obtained and thin-wall processability can be improved.
- a thermoplastic elastomer flexibility and extrusion processability can be enhanced, compatibility between the polyphenylene ether and the polyolefin resin can be enhanced, and mechanical properties can be improved.
- flame retardance can be improved by using a phosphorus flame retardant or a nitrogen flame retardant. Therefore, this flame-retardant resin sheet can be suitably used as a low dielectric layer of a high-speed transmission flat cable.
- the polyolefin resin is preferably at least one selected from the group consisting of an ethylene ethyl acrylate copolymer, an ethylene vinyl acetate copolymer, an acid-modified polyethylene, an acid-modified polypropylene, an ionomer, and an ethylene methacrylic acid copolymer. (Second invention of the present application). These resins are excellent in flexibility.
- thermoplastic elastomer is preferably a styrenic thermoplastic elastomer (the third invention of the present application). Styrenic thermoplastic elastomers are excellent in flexibility and extrudability.
- the tensile elastic modulus at 25 ° C. of the flame retardant resin sheet is 10 MPa or more and 300 MPa or less (the fourth invention of the present application).
- the tensile elastic modulus is larger than 300 MPa, the flexibility is lowered.
- the tensile elastic modulus is smaller than 10 MPa, the mechanical strength is deteriorated.
- the tensile modulus can be obtained from a stress-elongation curve by conducting a tensile test on a sample cut into a strip shape.
- the thickness of the flame retardant resin sheet is preferably 0.2 mm or less (the fifth invention of the present application). By reducing the thickness, the flexibility of a flat cable or the like using this flame-retardant resin sheet can be increased. In the present invention, such a thin film is extruded by using the resin component as described above. It became possible.
- the present invention also provides a flat cable using the flame retardant resin sheet as a covering material (the sixth invention of the present application).
- This flat cable is excellent in flame retardancy and flexibility.
- the present invention as one aspect of the flat cable, a conductor, a first insulating layer covering both sides of the conductor, a second insulating layer provided on the outer side of at least one side of the first insulating layer, and the second A flat cable having a shield layer provided outside an insulating layer, wherein the above-mentioned flame retardant resin sheet is used as the second insulating layer is provided (seventh invention of the present application).
- the first insulating layer may be composed of a plurality of layers such as an adhesive layer and a film layer.
- the present invention it is possible to obtain flexibility with a dielectric constant can be lowered, the flame-retardant resin sheet excellent in flame retardancy and thin workability, and the flat cable using the flame-retardant resin sheet as a covering material .
- FIG. 2 is a view showing a flat cable of the present invention, and is a cross-sectional view taken along the line A-A ′ of FIG. 1.
- Polyphenylene ether is an engineering plastic obtained by oxidative polymerization of 2,6-xylenol synthesized using methanol and phenol as raw materials. Also in order to improve the moldability of the polyphenylene ether, the material was melt blended polystyrene polyphenylene ether are various commercially available as modified polyphenylene ether resin.
- the polyphenylene ether resin used in the present invention any of the above-mentioned polyphenylene ether resin alone and a polyphenylene ether resin obtained by melt blending polystyrene can be used.
- transduced carboxylic acid, such as maleic anhydride can also be blended suitably and used.
- thermoplastic elastomer styrene elastomer, polyester elastomer, polyurethane elastomer, olefin elastomer and the like can be used.
- a styrene-based elastomer is preferable in that the compatibility between the polyphenylene ether and the polyolefin resin can be improved and the mechanical properties and extrusion processability can be improved.
- styrene elastomers examples include styrene / ethylene butene / styrene copolymers, styrene / ethylene propylene / styrene copolymers, styrene / ethylene / ethylene propylene / styrene copolymers, and styrene / butylene / styrene copolymers.
- hydrogenated polymers and partially hydrogenated polymers can be exemplified.
- transduced carboxylic acid such as maleic anhydride, can also be blended suitably and used.
- polystyrene resin used in the present invention examples include polyethylene, ultra-low density polyethylene, polypropylene, ethylene ethyl acrylate copolymer, ethylene vinyl acetate copolymer, acid-modified polyethylene, acid-modified polypropylene, ionomer, and ethylene methacrylic acid copolymer.
- polyethylene ultra-low density polyethylene
- polypropylene ethylene ethyl acrylate copolymer
- ethylene vinyl acetate copolymer acid-modified polyethylene
- acid-modified polypropylene an ionomer
- ethylene methacrylic acid copolymer examples include polyethylene, ultra-low density polyethylene, polypropylene, ethylene ethyl acrylate copolymer, ethylene vinyl acetate copolymer, acid-modified polyethylene, acid-modified polypropylene, ionomer, and ethylene methacrylic acid copolymer.
- Polyphenylene ether is 5% by mass to 75% by mass with respect to the entire resin component
- thermoplastic elastomer is 5% by mass to 40% by mass with respect to the entire resin component
- polyolefin resin is 20% by mass with respect to the entire resin component.
- the above three components are mixed so as to be 90% by mass or more.
- the amount of polyphenylene ether is less than the above amount, the flame retardancy of the flame retardant resin sheet is lowered.
- the amount of the thermoplastic elastomer is less than the above amount, the flexibility of the flame retardant resin sheet is lowered.
- the amount of the polyolefin resin is smaller than the above amount, the extrusion processability is lowered, and it becomes difficult to obtain a thin sheet.
- nitrogen-based flame retardant used in the present invention examples include melamine resin, melamine cyanurate, triazine, isocyanurate, urea, guanidine and the like.
- Nitrogen-based flame retardants do not generate toxic gases such as hydrogen halides even when incinerated after use, and can reduce the environmental burden.
- melamine cyanurate is used as a nitrogen-based flame retardant, it is preferable in terms of heat stability at the time of mixing and an effect of improving flame retardancy.
- Melamine cyanurate can be used after surface treatment with a silane coupling agent or a titanate coupling agent.
- Phosphorus flame retardants used in the present invention include cyclic organophosphorus compounds such as 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, triphenyl phosphate, bisphenol A bis (diphenyl) Examples thereof include phosphate esters such as phosphate, ammonium polyphosphate, aluminum polyphosphate, and aluminum hypophosphite. In view of the gist of the present invention, a halogen-free phosphorus-based flame retardant is preferable.
- the content of the nitrogen-based flame retardant and the phosphorus-based flame retardant is 5 to 100 parts by mass with respect to 100 parts by mass of the resin component in total. This is because if the amount is less than 5 parts by mass, the flame retardancy is insufficient, and if it exceeds 100 parts by mass, the mechanical properties and extrusion processability are deteriorated.
- a nitrogen-based flame retardant and a phosphorus-based flame retardant may be used singly or in combination.
- the flame-retardant resin sheet can be mixed antioxidant, anti-aging agents, lubricants, processing stabilizers, colorants, heavy metal deactivator material, foaming agent, a polyfunctional monomer or the like as appropriate .
- These materials short axis extruding type mixer, pressure kneader and mixed using a known melting mixer such as a Banbury mixer, to prepare a flame retardant resin sheet by extrusion molding or the like method.
- the thickness of the flame retardant resin sheet can be appropriately selected according to the portion to be used. As will be described later, when using a flame-retardant resin sheet as a low dielectric layer of a flat cable, the thickness required for the shield structure, conductor width, insulation film thickness, etc. is set in order to obtain a desired characteristic impedance. Design and use. Moreover, the softness
- FIG. 1 is a view showing an example of a flat cable using the flame-retardant resin sheet of the present invention
- FIG. 2 is a cross-sectional view taken along line A-A ′ of FIG.
- the first insulating layer 4 made of the adhesive layer 2 and the resin film 3 covers both surfaces of the flat conductor 1.
- a second insulating layer 5 is provided outside the first insulating layer 4.
- the second insulating layer 5 is for adjusting the characteristic impedance of the flexible flat cable.
- the adhesive layer 7 is interposed between the first insulating layer 4 (resin film 3) and the second insulating layer 5. Are attached to each other.
- a shield layer 6 is provided outside the flat cable.
- a conductive layer 9 is provided inside the shield layer 6 at the end of the flat cable.
- the shield layer 6 and the conductive layer 9 are electrically connected, and the conductive layer 9 is connected to the ground line via a connector.
- An easy-adhesion layer 8 is provided between the shield layer 6 and the second insulating layer 5 to enhance the adhesion between them.
- the shield layer 6 is for reducing electromagnetic interference and noise.
- the first insulating layer 4 is provided only on one side so that the connection terminal provided in the electronic device and the conductor 1 can be connected, and the conductor 1 is exposed. Yes.
- the flame retardant resin sheet of the present invention can be used as another layer constituting a flat cable.
- it can be used as the resin film 3.
- a flame retardant resin sheet is used instead of the adhesive layer 2 and a laminate of the flame retardant resin sheet and the resin film 3 is used as the first insulating layer. It can also be used as
- a conductive metal such as copper, tin-plated annealed copper, or nickel-plated annealed copper can be used.
- the conductor preferably has a rectangular shape, and its thickness corresponds to the amount of current used, but is preferably 15 ⁇ m to 50 ⁇ m in view of the flexibility of the flat cable.
- the adhesive layer 2 a polyester resin, a polyolefin resin, or the like can be used alone or mixed with a flame retardant.
- the thickness of the adhesive layer is preferably 20 ⁇ m to 50 ⁇ m.
- Resin film 3 is made of a resin material having excellent flexibility, and examples thereof include polyester resin, polyphenylene sulfide resin, and polyimide resin.
- Polyester resins include polyethylene terephthalate resin, polybutylene terephthalate resin, polyethylene naphthalate resin, polybutylene naphthalate resin, polytrimethylene terephthalate resin, polytrimethylene naphthalate resin, polycyclohexanedimethyl terephthalate resin, polycyclohexanedimethyl naphthalate polyarylate Examples thereof include resins.
- polyethylene terephthalate resin is preferably used as the resin film from the viewpoint of electrical characteristics, mechanical characteristics, cost, and the like.
- the thickness of the resin film is preferably 12 to 50 ⁇ m.
- a shield film in which a metal such as silver is vapor-deposited on a resin film such as polyethylene terephthalate, polyimide, polyphenylene sulfide, and a conductive adhesive layer is provided on the metal vapor deposition surface side can be used.
- acrylic resin, natural rubber, polyisoprene rubber, nitrile rubber, styrene / butadiene rubber, butyl rubber, vinyl acetate resin, polymethacrylate resin, polyvinyl butyrate, epoxy resin, silicone resin, etc. are used. can do.
- the thickness of the pressure-sensitive adhesive layer is 5 ⁇ m to 60 ⁇ m.
- urethane resin vinyl acetate resin, acrylic resin, ethylene-vinyl acetate copolymer, polymethyl methacrylate resin, rubber resin, or the like can be used.
- the thickness of the easy adhesion layer is 0.1 ⁇ m to 5 ⁇ m.
- the conductive layer 9 copper, tin-plated annealed copper, nickel-plated annealed copper, or the like can be used.
- the two first insulating layers 4 are placed on the outside of the plurality of conductors 1 so that the resin film 3 is on the outside, and a known thermal laminator or hot press device is used.
- the conductor 1 is bonded to the adhesive layer 2 and the adhesive layer 2 by performing heat and pressure treatment.
- the conductor 1 at the end portion can be exposed by making a hole in a part of the first insulating layer 4.
- a long flat cable can be obtained by continuously performing thermal lamination or hot pressing. After that, it is cut into a certain length to make an arbitrary length.
- a flat cable having a shield layer is obtained by providing a conductive layer outside the second insulating layer and covering the outer periphery with a shield tape (shield layer).
- Examples and comparative examples (Production of flame retardant resin sheet)
- the components shown in Table 1 were melt-mixed with a twin-screw mixer and then melt-extruded into a strand, and then the molten strand was cooled and cut to produce pellets.
- the pellets were extruded into a sheet with a T-die extruder to produce a sheet having a thickness of 150 ⁇ m.
- seat obtained using the dielectric constant measuring device (Nippon Hewlett-Packard Co., Ltd. make, brand name 4276A LCZ meter) was measured.
- a two-component curable urethane resin (manufactured by Toyo Ink Co., Ltd., main agent: EL510, hardener: CAT-RT810) is applied to one side of the flame-retardant resin sheet to form an easy-adhesion layer having a thickness of 3 ⁇ m.
- An acrylic pressure-sensitive adhesive (manufactured by Soken Chemical Co., Ltd., SK Dyne 1201) was applied to the surface to form a pressure-sensitive adhesive layer having a thickness of 20 ⁇ m.
- a flame retardant resin sheet is attached to the flat cable so that the adhesive layer is in contact with the resin film, and shield tape (silver is vapor-deposited on a polyethylene terephthalate film with a thickness of 9 ⁇ m and conductively adhered to the silver-deposited surface). And the whole was pressed and integrated at 100 ° C. for 5 seconds.
- the flame-retardant resin sheet was provided on both sides of the insulating film in Examples 1 and 4 and on one side in Examples 2, 3, 5, 6 and 7.
- Ethylene ethyl acrylate copolymer NUC-6220, manufactured by Nippon Unicar Co., Ltd.
- Acid-modified polyethylene manufactured by Mitsui Chemicals, Admer NF548 (9)
- Ionomer High Milan 1705 manufactured by Mitsui DuPont Polychemical Co., Ltd.
- Ethylene methacrylic acid copolymer Ethylene methacrylic acid copolymer (EMAA): manufactured by Mitsui DuPont Polychemical Co., Ltd., Nucrel AN4213C (11)
- Phosphate ester Daihachi Chemical Co., Ltd., PX200
- Melamine cyanurate MC6000 manufactured by Nissan Chemical Co., Ltd.
- the sheets of Examples 1 to 7 using three components of polyphenylene ether, thermoplastic elastomer, and polyolefin resin as resin components, and further adding a flame retardant, can be suitably extruded from a sheet having a thickness of 150 ⁇ m. Flame retardancy also met the required characteristics.
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Abstract
Description
(難燃性樹脂シートの作製)
表1に示す配合処方で各成分を二軸混合機で溶融混合した後ストランド状に溶融押出し、次いで、溶融ストランドを冷却切断してペレットを作製した。このペレットをTダイ押出機でシート状に押出成形して厚み150μmのシートを作製した。
得られたシートを幅10mmに切断し、JIS K7127に基づいて引張速度10mm/min、チャック間距離100mmで引張試験を行い、弾性率を測定した。
誘電率測定器(日本ヒューレットパッカード(株)製、商品名4276A LCZメーター)を用いて得られたシートの誘電率を測定した。
導体である錫メッキ軟銅箔(厚さ35μm、幅0.3mm)50本を0.5mmピッチで平行に並べた。ポリエチレンテレフタレート(厚み12μm)フィルムに、ポリエステル系接着剤(厚み30μm)を塗布した絶縁フィルム(第1絶縁層)2枚で導体を挟み込み、130℃に加熱した熱ラミネータを用いて加熱加圧処理を行って、導体の両面を絶縁フィルムで被覆した後、任意の長さに切断した。
作製したフラットケーブルに対して、UL規格1581のVW-1に規定される垂直燃焼試験を行った。より具体的には、フラットケーブルを10本準備し、着火後、10本中1本以上燃焼したもの、燃焼落下物によりフラットケーブルの下方に配置した脱脂綿が燃焼したもの、またはフラットケーブルの上部に取り付けたクラフト紙が燃焼したものを不合格とし、その他を合格とした。以上の結果を表1に示す。
(1)ポリフェニレンエーテル:旭化成(株)製、ザイロン540Z
(2)ポリフェニレンエーテル:旭化成(株)製、ザイロンX9108
(3)ポリフェニレンエーテル:旭化成(株)製、ザイロンX9102
(4)スチレン系熱可塑性エラストマー:旭化成(株)製、タフテックH1041
(5)スチレン系熱可塑性エラストマー:JSR(株)製、ダイナロン4600P
(6)エチレン酢酸ビニル共重合体(EVA):三井・デュポンポリケミカル(株)製、エバフレックスEV360
(7)エチレンエチルアクリレート共重合体(EEA):日本ユニカー(株)製、NUC-6220
(8)酸変性ポリエチレン:三井化学(株)製、アドマーNF548
(9)アイオノマー:三井・デュポンポリケミカル(株)製、ハイミラン1705
(10)エチレンメタクリル酸共重合体(EMAA):三井・デュポンポリケミカル(株)製、ニュクレルAN4213C
(11)リン酸エステル:大八化学(株)製、PX200
(12)メラミンシアヌレート:日産化学(株)製MC6000
2 接着層
3 樹脂フィルム
4 第1絶縁層
5 第2絶縁層
6 シールド層
7 粘着剤層
8 易接着層
9 導電層
Claims (7)
- ポリフェニレンエーテル5質量%以上75質量%以下、熱可塑性エラストマー5質量%以上40質量%以下、及びポリオレフィン樹脂20質量%以上90質量%以下を含有する樹脂成分と、前記樹脂成分100質量部に対してリン系難燃剤、窒素系難燃剤の一方又は両方を5~100質量部含有する難燃性樹脂シート。
- 前記ポリオレフィン樹脂は、エチレンエチルアクリレート共重合体、エチレン酢酸ビニル共重合体、酸変性ポリエチレン、酸変性ポリプロピレン、アイオノマー、及びエチレンメタクリル酸共重合体からなる群より選ばれた1種以上である、請求項1に記載の難燃性樹脂シート。
- 前記熱可塑性エラストマーは、スチレン系熱可塑性エラストマーである、請求項1又は2に記載の難燃性樹脂シート。
- 25℃における引張弾性率が10MPa以上300MPa以下である、請求項1~3のいずれか1項に記載の難燃性樹脂シート。
- 厚みが0.2mm以下である、請求項1~4のいずれか1項に記載の難燃性樹脂シート。
- 請求項1~5のいずれか1項に記載の難燃性樹脂シートを被覆材として用いたフラットケーブル。
- 導体、該導体の両面を被覆する第1絶縁層、該第1絶縁層の少なくとも片面の外側に設けられた第2絶縁層、及び該第2絶縁層の外側に設けられたシールド層を有するフラットケーブルであって、前記第2絶縁層として、請求項1~5のいずれか1項に記載の難燃性樹脂シートを用いたフラットケーブル。
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JP2011503278A JP5799802B2 (ja) | 2009-10-06 | 2010-08-19 | 難燃性樹脂シート及びそれを用いたフラットケーブル |
EP10821800.9A EP2487694B1 (en) | 2009-10-06 | 2010-08-19 | Flame-retardant resin sheet and flat cable using same |
KR1020117012726A KR101726005B1 (ko) | 2009-10-06 | 2010-08-19 | 난연성 수지 시트 및 그것을 이용한 플랫 케이블 |
CN201080003491.5A CN102239529B (zh) | 2009-10-06 | 2010-08-19 | 阻燃树脂片材以及包含该片材的扁平电缆 |
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JP2022032087A (ja) * | 2020-08-11 | 2022-02-25 | 東京特殊電線株式会社 | フレキシブルフラットケーブル |
JP7295830B2 (ja) | 2020-08-11 | 2023-06-21 | 株式会社Totoku | フレキシブルフラットケーブル |
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Also Published As
Publication number | Publication date |
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TWI501869B (zh) | 2015-10-01 |
EP2487694A1 (en) | 2012-08-15 |
TW201119859A (en) | 2011-06-16 |
JP5799802B2 (ja) | 2015-10-28 |
CN102239529A (zh) | 2011-11-09 |
CN102239529B (zh) | 2015-11-25 |
EP2487694A4 (en) | 2013-04-17 |
KR20120069602A (ko) | 2012-06-28 |
JPWO2011043129A1 (ja) | 2013-03-04 |
EP2487694B1 (en) | 2014-12-17 |
KR101726005B1 (ko) | 2017-04-11 |
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