Flame-retardant resin composition, insulated electric wire, metal cable, optical fiber cable and molded article using same

Abstract

The invention discloses a flame-retardant resin composition, which contains a base resin composed of polyethylene and acid-modified polyolefin, an organosilicon compound, a fatty acid-containing compound, and a hindered amine compound having a hindered amine structure. Polyethylene is composed of high-density polyethylene, medium-density polyethylene and low-density polyethylene, and the density of high-density polyethylene is 945kg / m 3 Above, the density of medium density polyethylene is 914kg / m 3 More than and less than 945kg / m 3 , the density of low density polyethylene is 864kg / m 3 More than and less than 914kg / m 3 . The content of high-density polyethylene in the base resin is 40% by mass to 60% by mass, the content of medium-density polyethylene in the base resin is 1% by mass to 35% by mass, and the content of low-density polyethylene in the base resin is The ratio is 10% by mass to 30% by mass, and the content of the acid-modified polyolefin in the base resin is 1% by mass to 20% by mass. The organosilicon compound is blended in a ratio of 3 to 10 parts by mass based on 100 parts by mass of the base resin, the fatty acid-containing compound is blended in a ratio of 3 to 10 parts by mass based on 100 parts by mass of the base resin, and the hindered amine compound Mixed in a ratio of 0.2 to 2.4 parts by mass with respect to 100 parts by mass of the base resin, the hindered amine compound is composed of a first hindered amine compound and a second hindered amine compound different from the first hindered amine compound.

Description

Technical field [0001] The present invention relates to a flame retardant resin composition, using its insulated wire, metal cable, fiber optic cable, and molded. Background technique [0002] The polyvinyl chloride resin (hereinafter referred to as "PVC") composition has excellent characteristics such as flame retardancy, oil resistance, water resistance, and insulation. Further, the PVC composition can correspond to various use purposes by appropriately adjusting the plasticizer, and therefore widely used for the cover, tube, tape, packaging material, building materials, etc. of the insulated wire. [0003] However, in recent years, the PVC composition has been contained in the structure, so sometimes toxic and harmful chlorine gas is generated during combustion, or dioxus is produced according to the combustion conditions, so it has been studying a higher environmental ecosorial material. PVC substitute. [0004] As such an ecosor material, a polyolefin resin is obtained as a ...

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Problems solved by technology

[0003] However, in recent years, since PVC compositions contain halogens in their structures, they sometimes generate toxic and harmful chlorine gas when burned, or dioxins are generated depending on the burning conditions, so studies have been made on the use of more environmentally friendly ecological materials. PVC substitute

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