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Insulated wire

一种绝缘电线、绝缘层的技术，应用在绝缘电缆、绝缘体、绝缘导体等方向，能够解决价格使用范围限制等问题，达到价格低、阻燃性和耐热性优异的效果

Active Publication Date: 2022-08-05
PROTERIAL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, fluoroelastomers are generally expensive materials, so there is a limit to the range of their use in terms of price

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] First, a fluoroelastomer composition for forming an insulating layer was prepared according to the blends shown in Table 1 below. Specifically, 70% by mass of the tetrafluoroethylene-propylene copolymer as the component (a1) and 30% by mass of the ethylene-ethyl acrylate copolymer (the amount of EA, MFR6) as the component (a2) were mixed to prepare As a base polymer (A), 7 parts by mass of an antimony compound (b1), 10 parts by mass of a brominated flame retardant (b2), 2 parts by mass of cross-linking agent (organic peroxide), 5 parts by mass of cross-linking aid (allylic compound), 1 part by mass of acid acceptor (magnesium oxide), 10 parts by mass of inorganic filler (silicon dioxide) , an inorganic filler (calcium carbonate), and these were kneaded with a roll to prepare the fluoroelastomer composition of Example 1.

[0083] Next, the prepared fluoroelastomer composition was extruded to a thickness of 0.4 mm on the outer periphery of a conductor (stranded tinned co...

Embodiment 2、3

[0088] In Examples 2 and 3, except that the mixing ratio of the component (a1) and the component (a2) was changed, a fluoroelastomer composition was prepared in the same manner as in Example 1, and an insulated wire was produced.

Embodiment 4

[0090] In Example 4, except that the compounding amount of the antimony compound (b1) was reduced from 7 parts by mass to 3 parts by mass, and the compounding amount of the brominated flame retardant (b2) was reduced from 10 parts by mass to 5 parts by mass, the same procedure as the implementation was carried out. Example 2 A fluoroelastomer composition was prepared in the same manner to produce an insulated wire.

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Abstract

The present invention provides an insulated wire which is excellent in mechanical properties, flame retardancy and heat resistance, and which is inexpensive compared to an insulated wire using a fluoroelastomer composition in which a base polymer is composed only of a fluoroelastomer. An insulated wire comprising a conductor and an insulating layer disposed on the outer periphery of the conductor, the insulating layer being formed of a fluoroelastomer composition, the fluoroelastomer composition comprising a base polymer (A) and a flame retardant ( B), the base polymer (A) comprises a copolymer (a1) of tetrafluoroethylene and an alpha olefin having 2 to 4 carbon atoms in an amount of not less than 70% by mass and not more than 98% by mass, and an ethylene-ethyl acrylate copolymer (a2) ( Excluding ethylene-ethyl acrylate-maleic anhydride terpolymer) 2 mass % or more and 30 mass % or less, the flame retardant (B) contains an antimony compound (b1) and a brominated flame retardant (b2).

Description

technical field [0001] The present invention relates to insulated wires. Background technique [0002] From the viewpoint of safety in the event of fire, flame retardancy is required for insulated wires used in railway vehicles, automobiles, and the like. In addition, with the high performance of railway vehicles and automobiles, the ambient temperature in which insulated wires are used tends to rise, and thus heat resistance is required so as not to deteriorate even after being left in a high temperature environment for a long time. [0003] In order to satisfy such characteristics, a fluoroelastomer is used as a material for forming the insulating layer provided in the insulated wire. Among the fluoroelastomers, for example, a copolymer of tetrafluoroethylene and an alpha olefin is known as a material excellent in heat resistance, flame retardancy, mechanical properties, oil resistance, chemical resistance, electrical properties, and the like. On the other hand, fluoroel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/18C08L23/08C08K3/36C08K3/26C08K5/14C08K3/22C08K5/03H01B3/44
CPCC08L27/18H01B3/445C08L2201/02C08L2201/08C08L2203/202C08K2003/222C08K2003/265C08L23/0869C08K3/36C08K3/26C08K5/14C08K3/22C08K3/2279C08K5/03H01B7/292H01B7/295C09D127/18C08K13/02C08L23/16C08L23/0815C08F214/265C08L23/06
Inventor 中桥正信
Owner PROTERIAL LTD
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