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Insulated wire and cable

A technology for insulating wires and cables, applied in the direction of insulated cables, insulated conductors, cables, etc., can solve the problems of decreased mechanical properties, decreased melt fluidity, limited molding machine, etc., and achieves the effect of preventing mold slag

Inactive Publication Date: 2015-11-18
HITACHI METALS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to obtain high flame retardancy that can suppress flame propagation in the event of a fire, a halogen-free flame retardant such as a high filling is required, but the problem with high filling is that the mechanical properties will decrease, and the melt fluidity (melt fluidity) will also decrease. Causes the molding machine to be limited

Method used

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  • Insulated wire and cable
  • Insulated wire and cable
  • Insulated wire and cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～5 and comparative example 1～6

[0079] Examples 1 to 5, Comparative Examples 1 to 6, and Conventional Examples

[0080] made by figure 2 cables shown.

[0081] (1) On the outer circumference of the conductor twisted by 19 bare wires of 0.18mm, as an insulating layer, use a 65mm extruder at 150°C to extrude 0.1mm of coated polyethylene as the inner layer, and extrude the coated polyethylene naphthalene 0.15 mm of butylene glycol formate was used as the outer layer, and then cross-linked by irradiation with electron beams of 10 Mrad to obtain an insulated wire. Three obtained insulated electric wires were twisted to prepare a three-core twisted wire.

[0082] (2) Prepare the various components shown in Table 1, knead them with a pressurized kneader at a starting temperature of 40°C and an ending temperature of 20°C, and then make them into granules (granulation) as a sheath material .

[0083] (3) The obtained cables were evaluated by various evaluation tests shown below. The evaluation results are shown...

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Abstract

The invention provides a insulated wire and cable. The invention aims to provide insulated wire and cable with low temperature properties, flexibility, oil resistance, cold resistance, fire retardancy and mechanical properties. The insulated wire has a conductor and insulated layer formed peripherally around the conductor. The insulated layer is made of a non-halogen flame-retardant resin composition. Metal hydroxide is added in a base polymer containing an ethylene-vinyl acetate copolymer; the metal hydroxide includes magnesium hydroxide; the base polymer has a vinyl acetate content of 20 mass% or higher to below 50 mass%. The insulated layer has advantages of fire retardancy, mechanical properties,low temperature properties and cold resistance.

Description

[0001] This application is a divisional application with a filing date of January 22, 2015, an application number of 201510033124.4, and an invention title of "Halogen-free flame-retardant resin composition and insulated wire and cable using the same". technical field [0002] The invention relates to a halogen-free flame-retardant resin composition and insulated wires and cables coated with the resin composition. Background technique [0003] Awareness of environmental problems is increasing all over the world, requiring the use of so-called halogen-free materials that do not generate halogen-containing gases when burned for insulating wires and cables. For example, an insulated wire using a halogen-free flame retardant such as a metal hydroxide is known (for example, refer to Patent Document 1). [0004] In order to obtain high flame retardancy that can suppress flame propagation in the event of a fire, a halogen-free flame retardant such as a high filling is required, but...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/02H01B7/18H01B7/28H01B7/295
CPCC08L23/0853C08L2201/02C08L2201/22C08L2203/202H01B7/0275H01B7/187H01B7/1875H01B7/28H01B7/295C08L83/04C08K9/04C08K9/06C08K2003/2224
Inventor 藤本宪一朗岩崎周桥本充
Owner HITACHI METALS LTD
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