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Halogen-free and flame-retarded resin composition and cable using the same

A technology of flame-retardant resin and composition, applied in the direction of insulating cables, cables, circuits, etc., can solve the problems of cable failure, coiling defects, and reduced operating efficiency, and achieve excellent operability, excellent flexibility, and environmental protection. The effect of small load

Inactive Publication Date: 2011-08-31
HITACHI METALS LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, the LAN cable coated with the halogen-free flame-retardant resin composition has a problem that the sheath material is hard, so there is a problem of winding defects during output or use, making it difficult to route and reducing work efficiency.
In addition, after laying, when additionally laying new cables or when a specific cable needs to be pulled out due to abnormalities, maintenance, etc., the sliding property of the cable sheath is poor, and there may be troubles that new cables cannot be passed through or cannot be pulled out.

Method used

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  • Halogen-free and flame-retarded resin composition and cable using the same
  • Halogen-free and flame-retarded resin composition and cable using the same
  • Halogen-free and flame-retarded resin composition and cable using the same

Examples

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Embodiment

[0066] Next, Examples 1 to 10 and Comparative Examples 1 to 12 of the present invention will be described.

[0067]

[0068] First, in Examples 1 to 10 and Comparative Examples 1 to 5 and 7 to 12 other than Comparative Example 6, a silane-grafted ethylene-vinyl acetate copolymer in which a silane compound was graft-copolymerized was used.

[0069] In the process of graft-copolymerizing the silane compound and the ethylene-vinyl acetate copolymer, the raw material ethylene-vinyl acetate copolymer (vinyl acetate content 25, 30, 42 mass%), vinyltrimethoxysilane, di Cumene peroxide is impregnated and mixed at a ratio of 100 / 3 / 0.01 parts by mass or 100 / 5 / 0.02 parts by mass, and the resulting material is mixed with a 40mm extruder (L / D=24) at 200°C according to the residence time of about 5 Extruded in minutes to allow grafting reaction.

[0070] Next, each component of the proportion shown in each example of Table 1 is put into a 37mm twin-screw extruder (L / D=60) together for k...

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Abstract

The invention discloses a halogen-free and flame-retarded resin composition and a cable using the same. The halogen-free and flame-retarded resin composition is small in environmental load, good in pliability and low in friction. The halogen-free and flame-retarded resin composition comprises ethylene-vinyl acetate copolymer (A) which has over 30 mass % of vinyl acetate, crystallized polyolefin resin (B), resin composition (C) having metallic hydroxides in a substrate polymer crosslinked by the ethylene-vinyl acetate copolymer, an acrylic acid series processing auxiliary agent (D) added in the resin composition, and a fatty acidamide lubricant (E).

Description

technical field [0001] The present invention relates to a halogen-free flame-retardant resin composition with a small environmental load and excellent flexibility and low friction, and a cable using the composition with good workability such as wiring workability. Background technique [0002] With the advent of a highly informationized society, the role of the network centered on computer systems is becoming more and more important. With the popularization of computers and broadband lines, LAN cables used to construct LANs (Local Area Networks) are widely used from ordinary homes to corporate offices. [0003] Conventionally, polyvinyl chloride, a halogen-containing material, has been used for the sheath material of LAN cables. However, since global environmental protection activities have increased in recent years, the spread of materials that do not generate toxic gas during combustion and cause little environmental pollution during disposal has rapidly progressed. [0...

Claims

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Application Information

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IPC IPC(8): C08L51/06C08L23/00C08K13/02C08K3/22C08K5/20H01B7/17H01B7/295
Inventor 杉田敬佑菊池龙太郎松冈功
Owner HITACHI METALS LTD
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