TW200838993A - Non-halogen flame retardent resin composition and electric wire/cable using the same - Google Patents

Abstract

The present invention provides a flame retardant resin composition and a electric wire/cable using it as covering layer. The said flame retardant resin composition is free from halogen-series flame retardant and shows the same flame retardancy as PVC electric wires, as well as is able to form a covering layer having excellent mechanical physical properties, thermal resistance and resistance of heat-distortion properties, together with it is suitable for heat-winding test. The present composition comprises 5 to 70 mass part of nitrogen-series flame retardant relative to 100 mass part of resin component, in which contains 20 to 50 mass part of polyamido resin or polyester resin or their mixture, 20 to 50 mass part of polypheylene ether-series resin and 30 to 60 mass part of styrene-series elastomer, in 100 mass part of the said resin component.

Description

200838993 IX. The present invention relates to a halogen-free flame-retardant resin composition and a wire/cable using the same, which is suitable for a halogen-free flame-retardant resin composition. As a coating layer of an electric wire or the like. [Prior Art] The internal wiring of OA (office automation; 〇fflce Automation) machines and electronic equipment such as photocopiers and printers is widely used between wire harnesses and electronic components such as sensors, actuators, and motors. Power or signal telex. A wire harness is a terminal such as a connector that bundles a plurality of wires or cables and can be inserted and removed at a terminal. In terms of flame retardancy, electrical insulation, etc., the electric wire bundle can use a PVC electric wire using polyvinyl chloride (PVC) as an insulating material. Since the PVC wire is excellent in flexibility, it is excellent in handleability as a wire harness, and because of sufficient strength, there is no problem that the insulator is broken or worn in the wiring of the wire harness, and the pressure welding is applied to the terminal. The connector is also installed well. However, since the PVC electric wire contains a halogen element, when the electric wire bundle is incinerated after use, a hydrogen chloride-based toxic gas is generated, and 'there is a problem of dioxin generation according to the incineration condition, and PVC is required to reduce the environmental load. It cannot be called a good insulating material. In recent years, in order to increase the demand for environmental load reduction, a coating material using a halogen-free electric wire containing no polyvinyl chloride resin or a halogen-based flame retardant has been developed. On the other hand, an electric wire such as an insulated wire or an insulated cable used for wiring in an electronic device is usually required to have various characteristics suitable for the 200838993 UL (Underwriters Laboratories) specification. In the UL specification, various characteristics such as flame retardancy, thermal deformation characteristics, low-temperature characteristics, initial stage of the coating material, and tensile properties after heat aging are specified. Among these, the vertical combustion test called VW-1 test for the flame retardancy requirement must be qualified, and it is one of the most stringent requirements in the UL specification. In general, a coating material of a halogen-free electric wire is a resin composition obtained by blending a metal hydroxide (also referred to as a metal hydrate) such as magnesium hydroxide or aluminum hydroxide with a polyolefin resin such as polypropylene to form a resin composition. . However, in order to qualify the vertical burning test VW-1, a large amount of metal hydroxide must be formulated in the polyolefin resin. As a result, the flexibility or elongation of the covering material is remarkably impaired, and there is also a problem that the formability such as extrusion molding is lowered. Japanese Patent Publication No. 2002-105755 (Patent Document 1) discloses a flame retardant resin composition obtained by blending an elastomer such as ethylene propylene rubber or styrene-butadiene with a polypropylene resin. The thermoplastic resin component is obtained by heating and kneading a metal hydrate. By beating the elastomer, it is possible to improve the handling of the material, and to perform mechanical vulcanization of the elastomer by the dynamic vulcanization of the elastomer, thereby obtaining mechanical properties and extrusion processing such as flexibility and elongation. Balance of sex and flame retardancy. However, when these materials are compared with PVC, the abrasion resistance or edge resistance is poor. When such characteristics are to be improved, there is a problem that the flexibility is lowered to cause the balance of characteristics to be lost. On the other hand, a high-strength halogen-free electric wire is proposed, and the polyphenylene ether resin described in Patent Document 2 or the polyphenylene sulfide resin described in Patent Document 3 is used for the covering material. These resins are excellent in terms of flame retardancy and strength, but have the disadvantages of lack of flexibility and high extrusion temperature of 200838993. [Patent Document 1] Japanese Laid-Open Patent Publication No. JP-A No. Hei. No. Hei. No. Hei. In view of the above-mentioned reasons, it is desired that a halogen-free electric wire has a flame-resistant, softness, abrasion resistance, edge resistance, and the like, and has a mechanical strength Φ which is excellent in PVC and contributes to a reduction in environmental load. The inventors of the present invention have found that the above problems can be solved by combining a resin composition containing a polyphenylene ether resin and a styrene elastomer and a nitrogen-based flame retardant. However, the required characteristics of the wire become more stringent, not only UL specifications, but also various characteristics suitable for CSA (Canadian Standards Association) specifications. The test item of the CSA specification has a heating winding test. When the wire is wound around a double rod of a wire diameter of 2 times and placed at a high temperature, cracks must not occur in the coating layer. • However, the above polyphenylene ether resin and benzene are contained. The resin composition of the ethylene elastomer may be cracked in the heating and winding test and is not suitable for the CSA specification. An object of the present invention is to provide a halogen-free flame-retardant resin composition and a wire/cable comprising the halogen-free flame-retardant resin composition as a coating layer. The halogen-free flame-retardant resin composition has the same properties as PVC. It is excellent in mechanical strength such as flame retardancy, softness, abrasion resistance, and edge resistance, and contributes to a reduction in environmental load, and is also suitable for a heating winding test. Means for Solving the Problem 200838993 The present invention relates to a halogen-free flame-retardant resin composition characterized by comprising a halogen-free flame-retardant resin composition containing 5 to 70 parts by mass of a nitrogen-based flame retardant per 100 parts by mass of the resin component. The above-mentioned 100 parts by mass of the resin component contains 20 to 50 parts by mass of a polyamide resin or a polyester resin or a mixture thereof, 20 to 50 parts by mass of a polyphenylene ether resin, and 30 to 60 parts by mass of a styrene-based elastomer. Body (part 1 of the scope of patent application). It is estimated that a resin composition containing a polyphenylene ether-based resin and a styrene-based elastomer has a sea-island-structured polymer alloy which is an island having a high modulus of elasticity and a hard polyphenylene ether resin at room temperature. The styrene-based elastomer having a large elongation and a softness is used as the sea. By alloying resins having different characteristics, it is possible to combine mechanical strength and flexibility such as abrasion resistance and edge resistance. The polyphenylene ether-based resin has an amorphous material having a glass transition temperature of 200 ° C or higher, and maintains a state of elasticity (hard) at a temperature lower than the glass transition temperature. On the other hand, the polystyrene block-based glass of the styrene-based elastomer has an amorphous material having a transfer temperature of 90 ° C to 100 ° C and is in a molten state at a glass transition temperature of β or more. Therefore, it is estimated that the polymer alloy of the amorphous two component is in a state in which a hard island is dispersed in a molten sea at a temperature of about 100 ° C to 200 ° C, and if it is stretched in this state, it is easily broken. It is inferred that when the heating winding test is performed within the range of the degree of abuse, cracks may occur on the surface of the electric wire because the high temperature elongation of the material is lost. Here, when a polyamide resin or a polyester resin or a mixture of these is further added, it is a polymer alloy of three or more components. The glass transition temperature of the polyamine resin and the polyester resin is approximately 20 ° C to 80 ° C, which is lower than 1 2 ° C of the heating winding test. However, since they are all crystalline resins, even at a temperature higher than the temperature at which the glass is transferred to 200838993, an appropriate modulus of elasticity can be maintained, and flexibility and elongation can be maintained. Further, since the compatibility with the styrene-based elastomer is high, if it can be uniformly dispersed in the styrene-based elastomer, the overall high-temperature elongation and strength can be exhibited. As a result, cracking can be prevented when the heating and winding test is performed at a temperature higher than the glass transition temperature of the styrene-based elastomer. The invention of claim 2 is the halogen-free flame-retardant resin composition of the first aspect of the invention, wherein the styrene-based elastic system is a block copolymerized elastomer of styrene and a rubber component. By copolymerizing an elastomer with a block of styrene and a rubber component by a styrene-based elastomer, a resin composition excellent in extrusion processability can be obtained. The invention described in claim 3 is the halogen-free flame-retardant resin composition according to claim 1 or 2, wherein the polyphenylene ether resin is melt-blended with polystyrene. Diphenyl ether resin. The extrusion workability can be improved by using a polyphenylene ether resin obtained by melt-blending polystyrene. The invention described in claim 4 is the halogen-free flame-retardant resin composition according to any one of claims 1 to 3, wherein the polyphenylene ether resin has a load bending temperature of 130. Above °C. When the load bending temperature of the polyphenylene ether resin is 1 30 ° C or more, a coating layer of an electric wire having a large mechanical strength can be obtained. The halogen-free flame-retardant resin composition according to any one of claims 1 to 4, which contains a styrene-based elastomer having a functional group as the styrene-based system. Part of the elastomer. The styrene-based elastic system having a functional group has a function as a compatibilizing agent of 200838993. By adding a compatibilizing agent, it is possible to modify the properties of the decylamine resin or the polyester resin and the styrene elastomer. In particular, the polyamine resin is used in combination with the invention described in the sixth aspect of the invention, and the halogen-free flame retardant of any one of the first to fifth aspects is a melamine cyanurate. . By using melamine cyanurate as the thermal stability during liter mixing, and improving flame retardancy. • The invention described in claim 7 is characterized in that a flame retardant resin composition as disclosed in claims 1 to 6 is used as a coating layer. According to this • Wires for flame retardancy, softness, mechanical properties and high temperature characteristics. The wire/cable of the seventh aspect of the invention of the invention of claim 8 wherein the coating layer & The thickness of the insulating coating layer is thinner than mechanical properties such as 0.3 msec and edge resistance, and it is possible to exhibit an excellent effect that is significantly different from the wire. The wire/cable of the invention of claim 7 or claim 8, wherein the third wire is crosslinked by radiation. By placing the coating or mechanical strength. EFFECTS OF THE INVENTION According to the present invention, it is possible to provide a halogen-free _ and a wire/cable using the same, and it is preferable that the halogen-free flame-retardant t is well mixed with the above-mentioned poly-polymer to enhance the high-temperature extender. For example, the patented range of fat composition, wherein the pre-nitrogen flame retardant can be used to provide a wire/cable, the halogen-free invention of any one of them can obtain an excellent halogen-free insulation, such as the patent application range 5 thickness of 0.3 mm. When the temperature is less than t, the wear resistance is reduced by using the prior art electric system, such as the patent application range, by irradiating ionization $, and the heat resistance of the flame retardant resin composition resin composition is equivalent to that of -10-200838993 PVC. It is excellent in flame retardancy, flexibility, abrasion resistance, edge strength, and contributes to environmental load reduction, and is also suitable for heating and winding. [Embodiment] Next, the best mode for carrying out the invention will be described. An engineering plastic obtained by oxidizing 2,6-xylene toluene synthesized from a polyphenylene ether alcohol and phenol as a raw material. In order to improve the formability of polyphenylene ether, various modified polyphenylene ether resins are materials in which polyphenylene ether is melt-blended with polyphenylene. The polyphenylene ether-based resin used in the present invention can be any of a polyphenylene-based resin monomer and a polyphenylene obtained by melt-blending polystyrene. Further, a carboxylic acid such as a cis-butene or the like may be blended as appropriate. When the polyphenylene ether-based resin is a resin obtained by melt-blending polystyrene, it is preferable because it can improve the melt-mixing workability with the styrene-based elastomer. Since the ether resin is melt-blended and the ether resin is excellent in compatibility with the styrene-based elastomer, the resin pressure is lowered by extrusion, and the extrusion processability can be improved. @ In such a polyphenylene ether-based resin, the load bending temperature changes depending on the blending ratio of the poly, and the load bending temperature is 13 (at TC' because the mechanical strength of the electric wire coating is improved and the thermal deformation property is preferably excellent. Further, the load bending temperature is 値 measured according to the square load of IS075-1 and 2 at 1.80 MPa. The polyphenylene ether resin can also be used in the form of polystyrene which is not blended with polystyrene. In this case, a low viscosity polyphenylene is used. In the case of an ether resin, the resin pressure during extrusion processing can be reduced while maintaining the strength. The viscosity of the polyphenylene ether resin is preferably 0.1 to 0.6 dl/g, and the mechanical viscosity is preferably 0.3 to 0.5 dl/g. The polystyrene resin dianhydride polyphenylene ether which is polymerized with a commercially available olefin is a good polystyrene styrene or higher, and the phenylene ether is a mechanically intrinsic 200838993. The styrene-based elastomer used in the present invention may, for example, be a styrene-ethylene butylene-styrene copolymer, a styrene-ethylene propylene-styrene copolymer, a styrene-ethylene-ethylene propylene/styrene copolymer or a benzene. Ethylene-butene-benzene-acetone copolymer, etc. A hydrogenated polymer or a partially hydrogenated polymer may be used, and a carboxylic acid such as maleic anhydride may be appropriately blended. Among them, styrene and rubber are used. When the block copolymerizes the elastomer, it is preferable from the viewpoint of improving the extrusion processability and also improving the tensile elongation at break, and also improving the impact resistance. Moreover, the block copolymer can be used. a triblock copolymer of a hydrogenated styrene-butylene-styrene block copolymer or a styrene-isobutylene-styrene copolymer, and a styrene-ethylene copolymer, styrene-ethylene propylene, or the like In the diblock type copolymer, the strength and hardness of the wire coating film are increased, and the triblock component in the styrene elastomer is preferably 50% by weight or more. Further, it is suitable for mechanical properties and flame retardancy. The content of styrene contained in the styrene-based elastomer is 20% by weight or more. When the content of styrene is less than 20% by weight, the hardness or extrusion processability is lowered. Further, when the styrene content is more than 50% by weight, Because the tensile elongation of the tensile drop However, the melt flow rate of the molecular weight index (abbreviated as "MFR"; measured according to ns K 7210 at 230 ° C x 2.16 kgf) is preferably in the range of 0.8 to 15 g/10 min. When the melt flow rate is less than 0.8 g/10 minutes, the extrusion processability is lowered, and the mechanical strength is lowered when it is more than 15 g/10 minutes. Polyamine resin and polyester resin are used to use 6-nylon resin, 12-nylon resin, 6 , 6-Nylon resin, 6-12 nylon resin, MXD-6 resin (semi-aromatic-12-200838993 nylon), aliphatic nylon/6-T nylon resin (semi-aromatic nylon), PBT (polybutylene terephthalate) resin or the like is preferred. Since the melting point is close to the glass transition temperature of the polyphenylene ether-based resin and the extrusion processability is good, it is particularly preferable to use a 6-nylon resin or a enamel resin. These resins may be added singly or as a polymer alloy of a commercially available polyphenylene ether resin and a polyamide resin or a polyester resin. The polyamide resin or the polyester resin or a mixture thereof, the polyphenylene ether resin, and the styrene elastomer can be melt-mixed at an arbitrary ratio, and are gathered from the flexibility of the electric wire or the retractability as a wire harness. The guanamine resin or the polyester resin or the mixture thereof is 20 to 50 parts by mass of the entire resin component, and the polyphenylene ether resin is 20 to 50 parts by mass of the entire resin component, and the styrene-based elastic system is a resin component. The overall 30 to 60 parts by mass is preferred. When the content of the polyphenylene ether resin is more than 50 parts by mass, the extrusion processability is lowered, and when it is less than 20 parts by mass, the mechanical strength or flame retardancy is lowered. A more preferable content of the polyamide resin or the polyester resin or a mixture of these is 25 parts by mass to 40 parts by mass. Further, when a styrene-based elastomer having a functional group is contained as a compatibilizing agent, the adhesion of the polyamide resin or the polyester resin to the styrene-based elastomer is increased, and high-temperature characteristics can be improved. The functional group may, for example, be an epoxy group, an oxazoline group, an acid anhydride group or a carboxyl group, and may be appropriately selected in accordance with the kind of the resin. The content of the compatibilizing agent is preferably from 1 to 20 parts by mass, more preferably from 1 to 10 parts by mass, per 100 parts by mass of the resin component. Further, the resin component can be blended with various resins such as polypropylene and polyethylene without impairing the scope of the present invention. Since the resin composition obtained by mixing polyethylene and random polypropylene can be crosslinked by irradiation with an ionizing radiation such as an electron beam or a x-ray, it is suitable for the case where heat resistance needs to be improved. -13-200838993 - The melamine-based flame retardant used in the present invention may, for example, be a melamine resin or a melamine cyanurate. The nitrogen-based flame retardant does not generate a hydrogen halide toxic gas even after being incinerated, and it is possible to reduce the environmental load. When a nitrogen-based flame retardant is used in combination with melamine cyanurate, it is preferred from the viewpoint of thermal stability during mixing or improvement of flame retardancy. The melamine cyanurate can also be surface treated with a decane coupling agent or a titanate coupling agent. By combining the surface treated melamine cyanurate and the polyphenylene ether resin or the styrene ® elastomer obtained by introducing a carboxylic acid, abrasion resistance or mechanical strength can be improved. The content of the nitrogen-based flame retardant is preferably 5 to 70 parts by mass based on 100 parts by mass of the resin composition. When the amount is less than 5 parts by mass, the flame retardancy of the insulated wire is insufficient, and when it is more than 70 parts by mass, the elongation or the extrusion processability may be lowered. The content of the nitrogen-based flame retardant is preferably from 10 to 40 parts by mass. Further, the halogen-free flame-retardant resin composition of the present invention preferably contains no phosphorus-based flame retardant. Moreover, since the phosphorus-based flame retardant is not actually contained, the environmental load such as excellent oxidation of the river can be reduced. Further, "actually not contained" ® means that a flame retardant such as a phosphate ester is not actively added. The scope of the present invention does not exclude trace amounts of phosphorus components derived from raw material resins or additives. Further, a crosslinking assistant may be added to the halogen-free flame-retardant resin composition of the present invention. The cross-linking aid has a plurality of carbon-carbon double bonds in a molecule such as trimethylolpropane trimethacrylate or triallyl cyanurate, triallyl isocyanurate or the like. Functional monomers are preferred. Further, the crosslinking assistant is preferably a liquid at normal temperature. It is easier to mix with a polyphenylene ether resin or a styrene elastomer in the liquid state. Further, since it is possible to improve the compatibility with the resin, it is preferred to use trimethylolpropane trimethacrylate as the crosslinking agent -14 - 200838993. The halogen-free flame-retardant resin composition of the present invention may be appropriately mixed with an antioxidant, a processing stabilizer, a colorant, a heavy metal inert material, a foaming agent, a polyfunctional monomer, etc., as needed, and a short-axis extrusion type can be used. It is produced by mixing these materials with a known melt mixer such as a mixer, a pressure kneader or a Banbury mixer. Further, the present invention provides a wire/cable comprising the above-described halogen-free flame retardant resin composition as a coating layer. The electric wire/cable of the present invention is composed of a coating layer of a conductor and a covered conductor, and when a coating layer is formed on the conductor, a known extrusion molding machine can be used. The thickness of the coating layer can be appropriately selected in accordance with the diameter of the conductor, and when the thickness of the coating layer is 0.3 mm or less, the mechanical strength is preferable. According to the prior art halogen-free electric wire, when the thickness of the coating layer is 0.3 mm or less, the performance in abrasion resistance or edge resistance is remarkably lowered, but according to the present invention, even if the thickness of the coating layer is 〇· Below 3 mm can also give excellent performance and can significantly show the difference from the prior art. In addition, it is preferable to use a wire having a thickness of 〇 · 3 mm or less in the case of fitting the wire for pressure welding to the connector. Further, in terms of improving the mechanical strength, it is preferred to irradiate the coating layer with ionizing radiation. The ionizing radiation can be used to accelerate the use of electron beams, X-rays, X-rays, and ultraviolet rays, such as the simplicity of use from a line source, the transmission thickness of ionizing radiation, and the speed of cross-linking treatment. Accelerating electron rays is optimal. Next, the best mode for carrying out the invention will be described by way of examples. However, the examples do not limit the scope of the invention. -15-200838993 EXAMPLES [Examples 1 to 27] (Production of particles of halogen-free flame-retardant resin composition) A blending formulation as shown in Tables 1 and 2 was used to melt-mix a twin-shaft mixer (45 mm). Φ, L/D = 42), and melt-mixing at a cylinder temperature screw revolution of 100 rpm, melt-extruding into a strand shape, and cooling the strands to be cooled and cut to produce pellets. (Manufacture of insulated wires) • A single-axis extruder (30 mm Φ, L/D = 24) was used to manufacture insulated wires by extrusion coating. The guide system uses a single wire copper wire (outer diameter 0.8 mm) with a film thickness of 0.125 mm. Squeeze 1 Set the conductor preheating temperature to 120 ° C, the cylinder temperature to 230 ° C, the induction to 240 ° C, and the line speed of 300 mm / min. In addition, the insulated electric wire was irradiated with an irradiation amount of 60 kGray (evaluation of the coating layer: tensile property). The conductor was pulled out from the manufactured electric wire to carry out a coating sequence test. The test conditions were tensile speed = 50 mm/min, mm between the marking lines, and temperature of 23 ° C. The tensile strength and the tensile elongation at break were measured to determine the average enthalpy. When the tensile strength was 10.3 MPa and the elongation at break was 100% or more, it was judged to be acceptable. (Evaluation of coating layer: second modulus) Using the same sample as the tensile test, the tensile test was carried out at a tensile speed = 50 minutes, a distance between the lines of the mark = 25 mm, and a temperature of 23 °C. The stress-tensile curve calculates the elastic modulus of the point at which the elongation is 2%. (Evaluation of insulated wires: flame retardancy test), points. Let 2 3 0 °C, 6, then: on the conductor [The tinning 1 condition is f. The mold temperature is applied to the 27 sub-rays. 3 tensile test distance = 25 each 3 points, and after stretching mm / min ί, from 10 - 200838993 to provide 10 points of sample to carry out UL standard 158 1 080 VW-1 vertical flame test, 1 point When it is qualified, it is judged as "the combined reference system is to ignite each sample for 5 times, 5 times, and the inside is bonfired, and the cotton wool laid in the lower part is not installed in the upper part of the sample, and the kraft paper is not burned or burnt. It is judged as (Evaluation of insulated wire: high temperature winding test) The manufactured wire is wound in a thermostat of i. 2 mm and 2. mm, heated at 1 21 ° C for 1 hour, and then taken out from the constant temperature bath. Cracks were generated. Three-point samples were evaluated, and the electric power of the cracks was evaluated as shown in Tables 1 and 2. [Comparative Examples 1 to 1 4] In addition to the use of the resin compositions of the formulations shown in Table 3, Examples 1 to 27 were used. The electric wire was manufactured in the same manner, and a series of evaluations were carried out 1 ''Table 3'. It was awarded £60 seconds to burn and pass. There is a number of lines on the stick and in the observation. Outside, with reality, the result is

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φ (*1 1) polybutylene phthalate resin melting point 223 ° C (*12) polybutyl phthalate resin melting point 185 ° C

(*13) Mitsubishi ENGINEERING PLASTICS Co., Ltd.: REMAROY (registered trademark) EX700A (*14) Modified polyphenylene ether resin (*15) with a load bending temperature of 170 °C. Other formulation... CIBA SPECIALTY CHEMICALS (German) Irganox 1010 (antioxidant), Asahi Chemical Industry Co., Ltd. ADEKASTAB CDA-1 (metal inert agent), Nippon Kasei Co., Ltd. SHIPACX 0 (slip agent) (* 16) tricarboxypropane trimethyl Acrylate-21-200838993 Examples 1 to 1 2 use a halogen-free flame-retardant resin composition (a polymer alloy of three components of a polyamide resin, a polyphenylene ether resin, and a styrene elastomer as a resin component) ) Evaluation results of wires as an insulating coating layer. The tensile strength, the tensile elongation at break, the second modulus, the high temperature winding test, and the evaluation of the flame retardancy of the coating layer were all acceptable levels. In Examples 13 to 27, a halogen-free flame-retardant resin composition (a polymer alloy of three components of a polyester resin (polybutylene terephthalate), a polyphenylene ether resin, and a styrene elastomer was used as the resin. Component) As a result of evaluation of the electric φ line of the insulating coating layer. In the same manner as in Examples 1 to 12, the evaluation results were all in a standard level. In Comparative Examples 1 to 5, 10, and 11, a halogen-free flame-retardant resin composition (a polymer alloy of two components of a polyphenylene ether resin and a styrene elastomer as a resin component) was used as an insulating coating layer. The evaluation result of the wire. The tensile strength and tensile elongation at break of the coating layer were the same as those of Examples 1 to 25, but cracks occurred during the high temperature winding test and did not reach the acceptable level. Comparative Example 1 1 Although the crosslinking aid was added, the effect such as the polyamide resin φ or the polyester resin could not be obtained, and cracks were generated at the high temperature winding test. Further, in Comparative Example 3, the flame retardant was not added, and the flame retardancy test was also unacceptable. In Comparative Examples 6 to 9, a polymer alloy of three components of a polyamide resin, a polyphenylene ether resin, and a styrene elastomer was used, but it was contained in an amount of 15 parts by mass based on 1 part by mass of the resin component. A small amount of polyamide resin, polyamine resin has less effect, and cracks occur during high temperature winding test, which does not reach the qualified level. In Comparative Example 12, the content of the polyester resin (polybutylene terephthalate) was 15 parts by mass. As with the polyamide resin, when the content is small, the effect of the high temperature characteristic of -22-200838993 cannot be produced, and cracks occur during the high temperature winding test. Comparative Example 1 The results of the irradiation and crosslinking of the 3 and 14 series were limited by the effect of improving the high-temperature elongation by the crosslinking of the irradiation, and it was not possible to completely prevent the occurrence of cracks during the high-temperature winding test. Industrial Applicability The active use of the present invention is an electric wire bundle of internal wiring of an electronic device such as a photocopier or a printer. [Simple description of the figure] Dust fine E 〇 23-

Claims (1)

200838993, X. Patent application scope: 1. A halogen-free flame-retardant resin composition characterized by a halogen-free flame retardant resin containing 5 to 70 parts by mass of a nitrogen-based flame retardant relative to 100 parts by mass of a resin component. The resin component contains 20 to 50 parts by mass of a polyamide resin or a polyester resin or a mixture thereof, 20 to 50 parts by mass of a polyphenylene ether resin, and 30 to 60 parts by mass. Styrene elastomer. 2. The halogen-free flame-retardant resin composition according to claim 1, wherein the styrene-based elastic system styrene and the rubber component block copolymerize 0 elastomer. 3. The halogen-free flame retardant resin composition according to claim 1 or 2 wherein the polyphenylene ether resin is a polyphenylene ether resin obtained by melt-blending polystyrene. The halogen-free flame-retardant tree fat composition according to any one of claims 1 to 3, wherein the polyphenylene ether resin has a load bending temperature of 130 ° C or higher. The halogen-free flame-retardant resin composition as set forth in any one of claims 1 to 4, which contains a styrene-based elastomer having a functional group as a part of the styrene-based elastomer. The halogen-free flame retardant resin composition as described in any one of claims 1 to 5 wherein the nitrogen-based flame retardant is melamine cyanurate. A wire/cable having a halogen-free flame retardant resin composition as disclosed in any one of claims 1 to 6 as a coating layer. 8. A wire/cable according to item 7 of the patent application, wherein the coating has a thickness of 0.3 mm or less. 9. The wire/cable of claim 7 or 8, wherein the coating is crosslinked by irradiating ionizing radiation. -24- 200838993 VII. Designated representative map: (1) The representative representative of the case is: None. (2) A brief description of the symbol of the representative figure: New Zealand y \\\ 8. If there is a chemical formula in this case, please disclose the chemical formula that best shows the characteristics of the invention: