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Resin composition for coating material of electrical cables and electrical cables using the same

A technology of resin composition and coating material, applied in plastic/resin/wax insulators, coatings, insulated cables, etc., can solve the problems of reduced tensile strength of polymeric materials, reduced cable flexibility, low flame retardancy, etc. Achieves excellent tensile strength and flame retardancy, eliminates need for braid, reduces outer diameter and weight

Active Publication Date: 2011-06-29
LG CABLE LTD (KR)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polymeric materials with excellent tensile strength have low flame retardancy, resulting in cables with poor flame retardancy
Also, the high stiffness of polymeric materials with excellent tensile strength results in less flexible cables, making them difficult to install
At the same time, if a large amount of organic or inorganic flame retardant is added to the polymeric material for flame retardancy, the tensile strength of the polymeric material is often reduced

Method used

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  • Resin composition for coating material of electrical cables and electrical cables using the same
  • Resin composition for coating material of electrical cables and electrical cables using the same
  • Resin composition for coating material of electrical cables and electrical cables using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-6 and comparative example 1-3

[0036] Samples for determining material properties were fabricated by mixing-milling the components in Table 1 with an open roll at about 130°C and forming with pressure at 170°C for 5 minutes. And, a cable comprising a conductor 201, an insulating layer 203, an embedding layer 207 and a sheath 211 was manufactured using the composition prepared according to the components and contents of Table 1, and made to have the following image 3 the shape shown. The manufactured samples were tested for their mechanical properties at normal temperature, mechanical properties after heating, oxygen index and weight loss after heating, and the freezing resistance, flame retardancy and tensile properties of the cables were evaluated.

[0037] [Table 1]

[0038]

[0039] In Table 1, "resin a" is PVC having a degree of polymerization of 800 or more, "resin b" is chlorinated PCV, and "resin c" is PVC having a degree of polymerization of less than 800. And, "plasticizer a" is DINP, "plasti...

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Abstract

Disclosed are a resin composition for coating material of electrical cables and electrical cables using the same. The resin composition comprises 100 parts by weight of a base resin selected from the group consisting of polyvinyl chloride resin, chlorinated polyvinyl chloride resin and composite resins thereof; 30 to 80 parts by weight of a plasticizer selected from the group consisting of a phthalate-based plasticizer, a phosphate-based plasticizer, a fatty acid-based plasticizer, a mellitate-based plasticizer and a polymer-based plasticizer, and mixtures thereof; 1 to 50 parts by weight of a metal hydroxide flame-retardant; and 1 to 50 parts by weight of a secondary flame-retardant selected from the group consisting of antinomy compound, boron-based compound, tin compound and molybdenum compound, and mixtures thereof.

Description

technical field [0001] The present invention relates to a resin composition for cable coating materials and an electric cable using the composition. Specifically, the present invention relates to a resin composition for a cable coating material capable of forming an embedding layer having excellent tensile strength and flame retardancy, and an electric cable using the composition. Background technique [0002] Deformation of power cables, control cables and signal cables, etc. (especially used in ships) due to tension and lateral pressure on equipment should be prevented. For this purpose, a cable having a braid layer above the embedding layer and formed by braiding galvanized iron wires, galvanized steel wires or copper-plated iron wires is generally used. Conventionally, a JIS (Japanese Industrial Standard) cable installed in a hazardous area or an area with a risk of explosion must have a braid in or on the cable. However, the braid increases the outer diameter of the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08K3/34H01B3/44C09D127/06C08L23/08
CPCC08L2205/02H01B3/443C08L27/06C08K5/0016H01B7/29C08K3/0058C08L27/24H01B7/295C08K3/016C08L2666/04
Inventor 朴度炫
Owner LG CABLE LTD (KR)
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