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Halogen-free flame-retardant resin composition, insulated wire and cable

A technology of resin composition and flame retardancy, which is applied in the direction of insulated cables, plastic/resin/wax insulators, insulators, etc., can solve the problems of pollution of brittle peripheral parts, harmful British and other organic compounds, and achieve the goal of improving flame retardancy Effect

Active Publication Date: 2021-04-09
HITACHI METALS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the soft vinyl chloride resin composition has problems of its own embrittlement and contamination of surrounding parts due to the migration of the plasticizer.
In addition, since it contains chlorine as a halogen, when it is incinerated, harmful secondary English and other organic compounds
Moreover, there are still many problems, such as sometimes using dangerous lead compounds that pollute the environment as stabilizers, etc.

Method used

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  • Halogen-free flame-retardant resin composition, insulated wire and cable
  • Halogen-free flame-retardant resin composition, insulated wire and cable
  • Halogen-free flame-retardant resin composition, insulated wire and cable

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Embodiment

[0083] Hereinafter, it demonstrates more concretely using an Example. It should be noted that the present invention is not limited by the following examples.

[0084] Examples and Comparative Examples

[0085] Made as follows figure 2 cables shown.

[0086] at 0.5mm 2 (7 wires / 0.32 mm) tinned annealed copper twisted wire 1 (outer diameter: 0.96 mm) was coated with 0.3 mm thick polyethylene to provide an insulating layer 2 to obtain an insulated wire 10 . Two insulated electric wires 10 are twisted together to obtain a twin-core twisted wire, and three double-core twisted wires are twisted together to obtain a twisted wire, and a binding tape 3 made of PET is applied around the twisted wire, and a plated wire is placed on it. The braided shielding layer 4 formed by tin annealed copper wires. The outer periphery of the braided shielding layer 4 was coated with a resin composition having a compounding ratio shown in Tables 1 and 2 to provide a sheath 5 with a sheath thickne...

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Abstract

The present invention provides a halogen-free flame-retardant resin composition, which can maintain extrudability, thermal shock, and flexibility even when a large amount of metal hydrate is used, and has improved flame-retardant properties, and insulated wires and cables. Flammability. In the halogen-free flame-retardant resin composition, 100 mass parts to 250 mass parts of aluminum hydroxide surface-treated with silane is contained with respect to 100 mass parts of polyolefin resin, and 5 mass parts to 50 mass parts One or more of the following selected from melamine cyanurate, zinc stannate, and amorphous silica, wherein the polyolefin-based resin contains a total of 55 parts by mass or more of two or more ethylene-vinyl acetates An ester copolymer having an average vinyl acetate content (unit: mass %) of two or more ethylene-vinyl acetate copolymers of 37.5 to 45, and an average MFR (unit: g / 10 minutes) of 10 to 50 the following.

Description

technical field [0001] The present invention relates to a halogen-free flame-retardant resin composition and an insulated wire and cable having a coating layer formed of the resin composition. Background technique [0002] The flexible vinyl chloride resin composition is inexpensive and excellent in processability, and its flexibility can be freely changed depending on the amount of plasticizer added. Furthermore, since they have self-extinguishing properties and relatively good mechanical properties, soft vinyl chloride resin compositions are widely used in building materials and daily necessities, including electric wire covering materials. [0003] However, the soft vinyl chloride resin composition has problems of its own embrittlement and contamination of peripheral parts due to the migration of the plasticizer. In addition, since it contains chlorine as a halogen, when it is incinerated, harmful secondary English and other organic compounds. Moreover, there are stil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08L31/04C08K13/06C08K9/06C08K3/22C08K5/3492C08K3/24H01B7/18H01B3/44H01B7/295
CPCC08K2201/003C08L23/0853C08L2201/02C08L2201/22C08L2203/202C08L2205/025C08L2205/035H01B3/441H01B7/187H01B7/295C08K13/06C08K9/06C08K2003/2227C08K5/34924C08K3/24C08L31/04
Inventor 菊池龙太郎谷口尚弘
Owner HITACHI METALS LTD
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