A high-insulation high-temperature cable and its manufacturing method

A technology with high insulation and manufacturing methods, applied in the direction of insulated cables, cable/conductor manufacturing, insulated conductors, etc., can solve problems such as low temperature resistance, short service life, and high brittleness of ceramic films, and achieve high temperature and anti-aging performance improvement , The overall structure design is reasonable, and the overall mechanical performance is good.

Active Publication Date: 2017-11-28
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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  • A high-insulation high-temperature cable and its manufacturing method

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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 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℃;

[0044] ② T...

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 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℃;

[0075] ② T...

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Abstract

The invention discloses a high-insulation high-temperature cable and a manufacturing method thereof. The high-insulation high-temperature cable includes a surface sheath, a hollow layer, a support layer, an inner liner, an insulation layer, and a conductor, and can withstand -70°C to 200°C for a long time. ℃ working temperature, at least 5000kV / s lightning resistance peak value, yield strength not less than 80N / mm2, elongation not less than 25%, tensile strength not less than 100N / mm2; The fiber is woven into a network tube as the support layer, the design of the hollow layer is added, and the high temperature and anti-aging material is selected as the base material to obtain excellent high temperature resistance and insulation performance; the high insulation high temperature cable of the present invention has good comprehensive mechanical properties and strong insulation , high temperature resistance, anti-aging, long service life and wide range of use.

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 Patents(China)
IPC IPC(8): H01B7/02H01B7/18H01B7/28H01B7/29H01B7/42H01B13/00
CPCY02A30/14
Inventor 何琳
Owner 天环线缆集团有限公司
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