WO2017221696A1 - Composition de matériau de revêtement de fil électrique, fil électrique isolé et faisceau de câbles - Google Patents

Composition de matériau de revêtement de fil électrique, fil électrique isolé et faisceau de câbles Download PDF

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Publication number
WO2017221696A1
WO2017221696A1 PCT/JP2017/021062 JP2017021062W WO2017221696A1 WO 2017221696 A1 WO2017221696 A1 WO 2017221696A1 JP 2017021062 W JP2017021062 W JP 2017021062W WO 2017221696 A1 WO2017221696 A1 WO 2017221696A1
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Prior art keywords
wire
covering material
bending
maximum value
tan
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PCT/JP2017/021062
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English (en)
Japanese (ja)
Inventor
謙一郎 荒木
達也 嶋田
Original Assignee
株式会社オートネットワーク技術研究所
住友電装株式会社
住友電気工業株式会社
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Publication of WO2017221696A1 publication Critical patent/WO2017221696A1/fr

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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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
    • C08L25/02—Homopolymers or copolymers of hydrocarbons
    • 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
    • H01B3/28—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances natural or synthetic rubbers
    • 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
    • H01B3/44—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 vinyl resins; acrylic resins
    • 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
    • H01B7/02—Disposition of insulation

Definitions

  • the present invention relates to a wire covering material composition, an insulated wire, and a wire harness, and more particularly, to a wire covering material composition, an insulated wire, and a wire harness that are suitable as a covering material for an electric wire routed in a vehicle such as an automobile. It is.
  • Patent Literature 1 presents an insulated wire that is excellent in flexibility by using a low-density resin for the wire covering material. Thereby, the load by bending can be made small.
  • the problem to be solved by the present invention is to provide an electric wire covering material composition, an insulated wire, and a wire harness that can reduce the load applied to the electric wire connection portion or the like even during a sharp bend arrangement.
  • the base resin is a polyolefin resin and / or a styrene thermoplastic elastomer, and the base resin contains a component having a maximum value of tan ⁇ of 1 or more.
  • the wire covering material composition according to the present invention preferably has a flexural modulus of 50 MPa or less. Moreover, it is preferable that the value after 1 hour of the reaction force produced by bending is 1/2 or less with respect to the maximum value of the bending load. Moreover, it is preferable that the value of the reaction force generated by bending after 1 hour of energization is 1 ⁇ 2 or less with respect to the maximum value of the bending load. And it is preferable that the base resin contains a component having a maximum value of tan ⁇ of less than 1. The content of the component having the maximum value of tan ⁇ of 1 or more is preferably in the range of 5 to 30% by mass with respect to the entire base resin. Examples of the component having the maximum value of tan ⁇ of 1 or more include polypropylene elastomers.
  • the insulated wire which concerns on this invention makes it a summary to have an electric wire coating
  • the other insulated wire which concerns on this invention makes it a summary to have an electric wire coating
  • the polyolefin resin and / or the base resin of the styrene thermoplastic elastomer contains a component having a maximum value of tan ⁇ of 1 or more, at the time of rapid bending arrangement The stress decreases with time, and the load applied to the wire connection portion or the like can be reduced.
  • the flexural modulus of the wire coating material composition is 50 MPa or less, sufficient flexibility is provided, so that the reaction force due to the initial bending can be reduced. Thereby, the load concerning an electric wire connection part etc. can be reduced further.
  • the load applied to the electric wire connecting portion or the like can be further reduced.
  • the load concerning an electric wire connection part etc. can be reduced more as the value of the energization 1 hour after the energization of the reaction force generated by bending is 1/2 or less with respect to the maximum value of the bending load.
  • the base resin contains a component having a maximum value of tan ⁇ of less than 1, deformation can be suppressed, so that the outer shape of the wire can be easily maintained.
  • the content of the component having a maximum value of tan ⁇ of 1 or more is in the range of 5 to 30% by mass with respect to the entire base resin, the effect of reducing the load applied to the electric wire connecting portion, etc. Excellent balance of effects that can be maintained.
  • the insulated wire which concerns on this invention has a wire-coating material using one of the said wire-coating-material compositions, it can reduce the load concerning a wire connection part etc. also at the time of rapid bending arrangement
  • the wire harness which concerns on this invention has the insulated wire which concerns on this invention, the load concerning an electric wire connection part etc. can be reduced also at the time of a rapid bending arrangement
  • the base resin is a polyolefin resin and / or a styrene thermoplastic elastomer, and the maximum value of tan ⁇ is 1 in the base resin.
  • Tan ⁇ is a value obtained by dividing the viscous component of the resin by the elastic component.
  • the viscous component deforms plastically (irreversibly) with respect to stress (oil / wax property).
  • the elastic component deforms reversibly with respect to stress (spring property).
  • tan ⁇ is 1 or more, the viscous component is larger in the resin. Therefore, the relaxation time is short, and it responds quickly to stresses such as bending.
  • This composition has the same softness and high stress absorbability by including a component having a maximum value of tan ⁇ of 1 or more in the base resin. That is, by increasing the stress absorption performance, the reaction force can be reduced, and the load on the connection portion or the like can be reduced.
  • Tan ⁇ can be obtained by performing dynamic viscoelasticity measurement at a temperature rising rate of 2 ° C./min and a measurement frequency of 1.6 Hz.
  • Tan ⁇ is temperature dependent. If the temperature region in which tan ⁇ is 1 or more includes normal temperature, the reaction force is reduced even after energization and before energization, and the load on the connection portion and the like can be reduced. On the other hand, even if the temperature range where tan ⁇ is 1 or more does not include room temperature, if it includes the heat generation temperature range of the electric wire due to energization (if it overlaps), the reaction force decreases during energization, and so on. The load on can be reduced. Even when the electric wire temperature is low during non-energization and tan ⁇ is less than 1, the reaction force is reduced by energizing it once, so the load on the connection portion and the like can be reduced. Therefore, it is preferable that the temperature range where tan ⁇ is 1 or more includes the normal temperature or the heat generation temperature range of the electric wire by energization.
  • the base resin may be composed of only a component having a maximum value of tan ⁇ of 1 or more, or may be composed of a combination of a component having a maximum value of tan ⁇ of 1 or more and a component having a maximum value of tan ⁇ of less than 1. Good. A component having a maximum value of tan ⁇ of less than 1 has a larger elastic component. For this reason, when the base resin contains a component having a maximum value of tan ⁇ of less than 1, deformation is easily suppressed and the outer shape of the electric wire is easily maintained.
  • the content of a component having a maximum value of tan ⁇ of 1 or more is preferably 5% by mass or more based on the entire base resin. Thereby, it is excellent in the effect that the load concerning an electric wire connection part etc. can be reduced.
  • the content of the component having a maximum value of tan ⁇ of 1 or more is more preferably 10% by mass or more with respect to the entire base resin.
  • the content of the component having a maximum value of tan ⁇ of 1 or more is preferably 30% by mass or less based on the entire base resin. Thereby, it is excellent in the effect which can maintain the external shape of an electric wire.
  • the content of the component having a maximum value of tan ⁇ of 1 or more is more preferably 25% by mass or less based on the entire base resin.
  • the content of the component having a maximum value of tan ⁇ of 1 or more is in the range of 5 to 30% by mass with respect to the entire base resin, the effect of reducing the load applied to the wire connection portion and the like and the outer shape of the wire Excellent balance of effects that can be maintained.
  • the present composition preferably has a flexural modulus of 50 MPa or less from the viewpoint of improving flexibility. More preferably, it is 20 MPa or less.
  • the flexural modulus is 50 MPa or less, sufficient flexibility is provided, so that the reaction force due to the initial bending can be reduced. Thereby, the load concerning an electric wire connection part etc. can be reduced further.
  • a base resin having a low flexural modulus may be used. The flexural modulus of the resin and the composition is measured at room temperature according to JIS K 7171 using a plate-like sample prepared according to JIS K 7171.
  • the reaction force generated by bending for one hour is preferably 1 ⁇ 2 or less of the maximum bending load. More preferably, it is 1/4 or less. Thereby, the load concerning an electric wire connection part etc. can be reduced more.
  • the value of the reaction force generated by bending after 1 hour of energization is 1 ⁇ 2 or less with respect to the maximum value of the bending load. More preferably, it is 1/4 or less. Thereby, the load concerning an electric wire connection part etc. can be reduced more.
  • the bending load is measured according to JIS K 7171 using a plate-like sample produced from an insulating material according to JIS K 7171.
  • the bending reaction force is measured by measuring the three-point bending reaction force with reference to JIS K 7171.
  • Base resin polyolefin-based resins include polyethylene, polypropylene, other olefin homopolymers, ethylene- ⁇ olefin copolymers, ethylene-vinyl acetate copolymers, ethylene-acrylic acid ester copolymers, ethylene-methacrylic acid.
  • Propylene copolymers such as ethylene copolymers such as ester copolymers, propylene- ⁇ olefin copolymers, propylene-vinyl acetate copolymers, propylene-acrylic acid ester copolymers, propylene-methacrylic acid ester copolymers, etc.
  • a polymer etc. are mentioned. These may be used alone as a base resin or in combination of two or more.
  • polyolefin resin a polyolefin elastomer based on olefin may be used.
  • Polyolefin elastomer can impart more flexibility. Thereby, the reaction force by an initial bending can be made small, and the load concerning an electric wire connection part etc. can further be reduced.
  • polyolefin elastomers include olefinic thermoplastic elastomers (TPO) such as ethylene elastomers (PE elastomers) and propylene elastomers (PP elastomers), ethylene-propylene copolymers (EPM, EPR), and ethylene propylene-diene copolymers. (EPDM, EPT) and the like.
  • polyethylene examples include high density polyethylene (HDPE), medium density polyethylene (MDPE), low density polyethylene (LDPE), linear low density polyethylene (LLDPE), very low density polyethylene (VLDPE), and metallocene very low density polyethylene. Can be mentioned. These may be used alone as a base resin or in combination of two or more. Of these, low density polyethylene represented by metallocene ultra-low density polyethylene is more preferred. When low density polyethylene is used, more flexibility can be imparted. Thereby, the reaction force by an initial bending can be made small, and the load concerning an electric wire connection part etc. can further be reduced.
  • HDPE high density polyethylene
  • MDPE medium density polyethylene
  • LDPE low density polyethylene
  • LLDPE linear low density polyethylene
  • VLDPE very low density polyethylene
  • metallocene very low density polyethylene metallocene very low density polyethylene.
  • the polyolefin resin preferably has a density of 0.860 to 0.900 g / cm 3 .
  • the low density makes it excellent in flexibility.
  • the density of the polyolefin-based resin is a value measured in accordance with ASTM standard D792.
  • the polyolefin resin preferably has a crystallinity of 10 to 50%.
  • a crystallinity of 10 to 40% is more preferable, and a crystallinity of 10 to 25% is more preferable.
  • the crystallinity of the polyolefin-based resin has a correlation with the density. When the crystallinity is low, the density is low, and when the crystallinity is high, the density is high.
  • the crystallinity of the polyolefin resin can be measured using a differential scanning calorimeter. Specifically, the heat of fusion of the resin pellets is measured.
  • the polyolefin resin may be cross-linked after being formed into a wire shape. By cross-linking, heat resistance is improved.
  • the crosslinking method is not particularly limited. A known crosslinking method such as silane crosslinking, peroxide crosslinking, or electron beam crosslinking can be appropriately selected. In the case of performing silane crosslinking, a silane-modified polyolefin resin modified with silane is used as the polyolefin resin.
  • Styrenic thermoplastic elastomers include polystyrene-poly (ethylene / propylene) block (SEP), polystyrene-poly (ethylene / propylene) block-polystyrene (SEPS), polystyrene-poly (ethylene / butylene) block-polystyrene (SEBS). And those containing an olefin component such as polystyrene-poly (ethylene-ethylene / propylene) block-polystyrene (SEEPS). These may be used alone or in combination of two or more.
  • the styrenic thermoplastic elastomer may be acid-modified. When the acid is modified, the adhesion between the conductor and the insulating layer becomes better.
  • an unsaturated carboxylic acid or a derivative thereof can be used. Examples of the unsaturated carboxylic acid include maleic acid and fumaric acid. Examples of the unsaturated carboxylic acid derivative include maleic anhydride (MAH) and maleic acid ester. These may be used alone or in combination of two or more. Of the acid modifiers, maleic acid and maleic anhydride (MAH) are preferred.
  • polyethylene and polypropylene can be suitably used among the polyolefin resins and styrene thermoplastic elastomers described above.
  • polyethylene is particularly preferably low density polyethylene (LDPE), linear low density polyethylene (LLDPE), very low density polyethylene (VLDPE), or metallocene ultra low density polyethylene.
  • the elastic modulus of the component having a maximum value of tan ⁇ of 1 or more in the base resin is preferably 100 MPa or less from the viewpoint of excellent flexibility. More preferably, it is 80 MPa or less.
  • the bending elastic modulus is 0.5 MPa or more from the viewpoint of easily securing the outer shape of the electric wire. More preferably, it is 1.0 MPa or more.
  • the component having a maximum value of tan ⁇ of less than 1 preferably has a flexural modulus of 100 MPa or less from the viewpoint of excellent flexibility. More preferably, it is 80 MPa or less.
  • the bending elastic modulus is 0.5 MPa or more from the viewpoint of easily securing the outer shape of the electric wire. More preferably, it is 1.0 MPa or more.
  • the base resin may contain a resin other than the polyolefin resin and the styrene thermoplastic elastomer as long as the physical properties are not affected.
  • the insulated wire and wire harness which concern on this invention can be obtained using this composition of the above structure.
  • the insulated wire according to the present invention has a wire covering material made of a crosslinked or non-crosslinked product of the above composition. From the viewpoint of excellent heat resistance, the wire covering material is preferably composed of a crosslinked product of the present composition.
  • the crosslinking method is not particularly limited. A known crosslinking method such as silane crosslinking, peroxide crosslinking, or electron beam crosslinking can be appropriately selected. In the case of performing silane crosslinking, a silane-modified polyolefin resin modified with silane is used as the polyolefin resin. And the wire harness which concerns on this invention has the insulated wire which concerns on said this invention.
  • the conductor of the insulated wire is not particularly limited with respect to the conductor diameter, the material of the conductor, and the like, and can be appropriately determined according to the use of the insulated wire.
  • Examples of the conductor include copper, copper alloy, aluminum, aluminum alloy and the like.
  • the wire covering material may be a single layer or a plurality of layers of two or more layers.
  • ISO 6722 is an international standard used for electric wires for automobiles, and is classified into classes from A to E depending on the allowable heat-resistant temperature.
  • An insulated wire having a wire covering material composed of a cross-linked product of this composition is excellent in heat resistance and is optimal for a battery cable or the like to which high voltage is applied. It is possible to obtain The thing of the structure excellent in a softness
  • flexibility is suitable for a thick thing, for example, an electric wire with a conductor cross-sectional area of 3 cm ⁇ 2 > or more.
  • FIG. 1 shows an insulated wire according to an embodiment of the present invention.
  • FIG. 2 shows an example of a method of rapid bending and routing of insulated wires.
  • the insulated wire 10 according to the present invention includes a conductor 12 and a wire covering material 14 disposed on the outer periphery of the conductor 12.
  • the insulated wire 10 may be routed by a sharp bend as shown in FIG. 2 from a space for a vehicle such as an automobile.
  • a reaction force due to the bending is greatly generated in the electric wire. If this reaction force continues to the electric wire, a load may be applied to the connecting portion of the electric wire (such as the fitting portion of the connecting terminal).
  • the electric wire becomes thicker due to an increase in current, the electric wire becomes harder, and thus the reaction force due to bending and the load on the electric wire connection portion further increase.
  • this composition contains a component with a maximum value of tan ⁇ of 1 or more in the base resin, the stress decreases with time during such a sharp bending arrangement, and the load on the wire connection portion and the like is reduced. it can. And when the bending elastic modulus of this composition is 50 MPa or less, since sufficient flexibility is also provided, the reaction force due to the initial bending can be reduced. Thereby, the load concerning an electric wire connection part etc. can be reduced further. If the base resin contains a component having a maximum value of tan ⁇ of less than 1, deformation can be suppressed, and the outer shape of the electric wire can be easily maintained.
  • the insulated wire which concerns on this invention has the electric wire coating material which consists of a crosslinked body of this composition, it is excellent in heat resistance.
  • the reaction force due to bending can be reduced during energization using heat generated by energization.
  • the material composition may be adjusted so that the heat generation temperature region of the wire and the temperature region where the tan ⁇ of the wire coating material is 1 or more overlap.
  • a crosslinked body becomes large in rubber elasticity and an elastic component becomes large compared with a non-crosslinked body. If it does so, the reaction force by the bending at the time of arrangement tends to become large.
  • the base resin contains a component having a maximum value of tan ⁇ of 1 or more, the stress is sufficiently reduced with time even during the rapid bending treatment in the crosslinked body. In addition, it is possible to reduce the load applied to the wire connection portion and the like.
  • test materials and manufacturers The test materials used in the present examples and comparative examples are shown together with the manufacturer, product name, and the like.
  • Silane Graft Polyethylene (1) 1 to 4 parts by mass of vinyltrimethoxysilane (“KBM1003” manufactured by Shin-Etsu Chemical), 100 parts by mass of polyethylene (1) (“ENR7256.02” manufactured by Dow Elastomer), dicumyl peroxide (“PARK Mill D” manufactured by NOF Corporation)
  • the silane-grafted polyethylene (1) was prepared by mixing 0.1 to 0.5 parts by mass of the dry blended material with a single screw extruder having an inner diameter of 25 mm at 190 ° C.
  • Silane grafted polyethylene (2) was prepared in the same manner as in the preparation of silane grafted polyethylene (1) except that polyethylene (2) (“ENR8440” manufactured by Dow Elastomer) was used instead of polyethylene (1).
  • Measurement of flexural modulus was performed in accordance with JIS K 7171 using a plate-like sample prepared from an insulating material in accordance with JIS K 7171.
  • Measurement of bending load was performed in accordance with JIS K 7171 using a plate-like sample prepared from an insulating material in accordance with JIS K 7171.
  • Comparative Examples 1 to 3 do not have a component having a maximum value of tan ⁇ of 1 or more in the base resin. For this reason, even when a certain amount of time has passed since the decrease width of the bending reaction force is small, the reaction force remains large.
  • the base resin has a component having a maximum value of tan ⁇ of 1 or more. For this reason, the reduction range of the bending reaction force is large, and almost no reaction force remains when a certain time elapses. That is, the stress decreases with time at the time of a sharp bending arrangement, and deforms so as to follow the deformation. Thereby, stress is relieved and the load concerning an electric wire connection part etc. can be reduced.
  • the shape is adapted to the external wiring environment because it is deformed according to the wiring environment when the heat is generated during the electric current. For this reason, it is possible to reduce the load applied to the wire connection portion and the like.
  • Insulation wire 12 Insulated wire 12 Conductor 14 Insulation coating material

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  • Spectroscopy & Molecular Physics (AREA)
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Abstract

L'invention concerne une composition de matériau de revêtement de fil électrique, un fil isolé et un faisceau de câbles qui sont efficaces pour réduire la charge imposée, par exemple, des joints de fils lors de la disposition des fils dans un état fortement incurvé. La composition de matériau de recouvrement de fil électrique comprend une résine de base qui est une résine à base de polyoléfine et/ou un élastomère thermoplastique à base de styrène et qui contient un composant ayant un tanδ maximal de 1 ou plus. La composition de matériau de recouvrement de fil électrique est utilisée pour configurer le fil electrique isolé ou le faisceau de câbles. Il est préférable que la composition de matériau de recouvrement de fil électrique présente un module de flexion de 50 MPa ou moins.
PCT/JP2017/021062 2016-06-23 2017-06-07 Composition de matériau de revêtement de fil électrique, fil électrique isolé et faisceau de câbles WO2017221696A1 (fr)

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JP2016124176A JP2017228445A (ja) 2016-06-23 2016-06-23 電線被覆材組成物、絶縁電線およびワイヤーハーネス
JP2016-124176 2016-06-23

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09286882A (ja) * 1996-04-19 1997-11-04 Mitsui Petrochem Ind Ltd 電気絶縁ゴム
JP2002093239A (ja) * 2000-09-18 2002-03-29 Mitsui Chemicals Inc 電線被覆材
JP2013234334A (ja) * 2004-11-25 2013-11-21 Mitsui Chemicals Inc プロピレン系樹脂組成物からなる成形体
WO2013191222A1 (fr) * 2012-06-20 2013-12-27 積水化学工業株式会社 Matériau amortisseur et matériau d'étanchéité

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09286882A (ja) * 1996-04-19 1997-11-04 Mitsui Petrochem Ind Ltd 電気絶縁ゴム
JP2002093239A (ja) * 2000-09-18 2002-03-29 Mitsui Chemicals Inc 電線被覆材
JP2013234334A (ja) * 2004-11-25 2013-11-21 Mitsui Chemicals Inc プロピレン系樹脂組成物からなる成形体
WO2013191222A1 (fr) * 2012-06-20 2013-12-27 積水化学工業株式会社 Matériau amortisseur et matériau d'étanchéité

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