High-insulativity and high-temperature-resistant cable and manufacturing method therefor

A high-insulation, manufacturing method technology, applied in insulated cables, cable/conductor manufacturing, insulated conductors, etc., can solve the problems of high temperature resistance, short service life, poor insulation, etc., and achieve high temperature resistance and aging resistance. Reasonable structural design, high toughness and the effect of buffering capacity

Active Publication Date: 2017-02-01
天环线缆集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Among the relevant patents that have been applied in China, the patent "A Ceramic Insulated High Temperature Cable" (application number: 201520062210.3, publication date: 2015-07-08) discloses a ceramic layer coated on the surface of the conductor core material. Insulation method, but due to the continuous plating adopted, the ceramic film is very brittle, and the ceramic layer is easily broken after bending, and it is easy to damage the conductor core material and damage the insulating surface material, so that the service life of the final molded product is short, and it is also easy to age and Corrosion, on the other hand, because other materials are not selected high-temperature resistant high-insulation materials, so other parts outside the ceramic part are still not high-temperature resistant, and the insulation is also poor. Because there is no overall design and reasonable combination, the ceramic insulation of the invention is resistant The tensile strength, yield strength, and elongation of high-temperature cables are equivalent to those of ordinary cables, and the comprehensive mechanical properties are not good

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  • High-insulativity and high-temperature-resistant cable and manufacturing method therefor

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Embodiment 1

[0040] A high-insulation high-temperature cable, which is respectively provided with a surface sheath 1, a hollow layer 2, a polytetrafluoroethylene film layer 3, a support layer 4, an inner lining 5, an insulating layer 6, and a conductor 7 from the outside and the inside; the surface sheath 1 is made of heat vulcanized silicone rubber; the support layer 4 is made of alumina ceramic fiber; the inner lining 5 is made of ENB EPDM rubber; the insulating layer 6 is made of epoxy resin and glass fiber in a weight ratio of 9:1 made of mixed materials;

[0041] The manufacturing method of the high-insulation high-temperature cable comprises the following steps:

[0042] 1) Selection and preparation of raw materials

[0043] ① The raw material of the surface sheath 1 is heat vulcanized silicone rubber, and the selection standard is: its volume resistivity is not less than 2×10 15 Ω·cm, dielectric strength not less than 200kV / cm, long-term working temperature range -55~180℃;

[004...

Embodiment 2

[0071] A high-insulation high-temperature cable, which is respectively provided with a surface sheath 1, a hollow layer 2, a polytetrafluoroethylene film layer 3, a support layer 4, an inner lining 5, an insulating layer 6, and a conductor 7 from the outside and the inside; the surface sheath 1 is made of heat vulcanized silicone rubber; the support layer 4 is made of alumina ceramic fiber; the inner lining 5 is made of ENB EPDM rubber; the insulating layer 6 is made of epoxy resin and glass fiber in a weight ratio of 9:1 made of mixed materials;

[0072] The manufacturing method of the high-insulation high-temperature cable comprises the following steps:

[0073] 1) Selection and preparation of raw materials

[0074] ① The raw material of the surface sheath 1 is heat vulcanized silicone rubber, and the selection standard is: its volume resistivity is not less than 2×10 15 Ω·cm, dielectric strength not less than 200kV / cm, long-term working temperature range -55~180℃;

[007...

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Abstract

The invention discloses a high-insulativity and high-temperature-resistant cable and a manufacturing method therefor. The high-insulativity and high-temperature-resistant cable comprises a surface layer sheath, a hollow layer, a supporting layer, an inner lining part, insulating layers and conductors, wherein the cable can bear a working temperature from minus 70 to 200 DEG C for a long time; the cable at least can resist thunder and lightning steep peak value of 5,000kV / s; the yield strength of the cable is not lower than 80N / mm<2>; the ductility of the cable is not lower than 25% and the tensile strength of the cable is not lower than 100N / mm<2>. The extremely excellent high-temperature-resistance and insulation performance of the cable is obtained by steps of weaving ceramic fibers which are manufactured by a specific method into a tubular net to be used as the supporting layer, adding design of the hollow layer, and choosing a high-temperature-resistant and anti-aging material as a base material. The high-insulativity and high-temperature-resistant cable is good in comprehensive mechanical performance, high in insulativity, high in high temperature resistance, resistant to aging, long in service life, and wide in range of application.

Description

technical field [0001] The invention relates to the field of electronic components, in particular to a high-insulation high-temperature cable and a manufacturing method thereof. Background technique [0002] A cable is usually a rope-like cable twisted by several or groups of conductors (at least two in each group). Each group of conductors is insulated from each other and is often twisted around a center. Highly insulating overlay. The cable has the characteristics of internal electrification and external insulation. [0003] The insulating layer is to evenly and hermetically wrap a layer of non-conductive material around the cable conductor, such as: resin, plastic, silicone rubber, PVC, etc., but these materials are limited by their essential properties, and their heat resistance and insulation properties are compared with those of ceramics. Weaker than the base material. [0004] Among the relevant patents that have been applied in China, the patent "A Ceramic Insulat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/02H01B7/18H01B7/28H01B7/29H01B7/42H01B13/00
CPCY02A30/14H01B7/28H01B7/0225H01B7/0291H01B7/1875H01B7/292H01B7/421H01B13/00
Inventor 何琳
Owner 天环线缆集团有限公司
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