Insulated cable and preparation method thereof

A technology for insulating cables and insulating layers, which is applied in the direction of cable/conductor manufacturing, organic insulators, conductor/cable insulation, etc., and can solve problems such as physical hazards and life dangers of users

Inactive Publication Date: 2016-05-04
WUHU HANGTIAN SPECIAL CABLE FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although the existing insulated cables can meet most of the production needs, in the specific high-voltage field, the insulation resistance of the insulated cables still needs to be improved, otherwise it will easily cause physical harm to users, even life-threatening

Method used

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Examples

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preparation example Construction

[0012] The invention provides a method for preparing an insulated cable. The insulated cable includes a wire core and an insulating layer, and the insulating layer is coated on the outside of the wire core. The preparation method includes:

[0013] 1) Mixing bisphenol F epoxy resin, cresol-formaldehyde resin, phenolic resin powder, lubricant, white carbon black, cryolite, magnesium hydroxide, diethyl malonate and calcium phosphate thing;

[0014] 2) The kneaded material is coated on the outside of the wire core by extrusion molding to obtain an insulated cable.

[0015] In the present invention, the type of bisphenol F epoxy resin and cresol-formaldehyde resin can be any conventional resin in the art, but in order to make the insulation of the insulated cable obtained is more excellent, preferably, double The molecular weight of phenolic F-type epoxy resin is 3000-7500, and the molecular weight of cresol-formaldehyde resin is 2000-5000.

[0016] In the present invention, the...

Embodiment 1

[0024] 1) Bisphenol F type epoxy resin (weight-average molecular weight is 4000), cresol-formaldehyde resin (weight-average molecular weight is 2500), phenolic resin powder, stearic acid, white carbon black, cryolite, magnesium hydroxide, Diethyl malonate and calcium phosphate were mixed according to the weight ratio of 100:45:6:27:13:9:5:6:6, and then kneaded at 225°C for 1.65h to obtain a kneaded product, in which the ice crystal The particle size of stone is 0.4μm;

[0025] 2) Extrude the kneaded product (die temperature is 211° C.) to obtain the insulated cable A1.

Embodiment 2

[0027] 1) Bisphenol F type epoxy resin (weight-average molecular weight is 3000), cresol-formaldehyde resin (weight-average molecular weight is 1500), phenolic resin powder, stearic acid, white carbon black, cryolite, magnesium hydroxide, Diethyl malonate and calcium phosphate were mixed according to the weight ratio of 100:25:4:16:9:8:4:3:4, and then kneaded at 200°C for 1.3h to obtain a kneaded product, in which the ice crystal The particle size of stone is 0.3μm;

[0028] 2) Extrude the kneaded material (die temperature is 200° C.) to obtain the insulated cable A2.

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Abstract

The invention discloses an insulated cable and a preparation method thereof; the insulated cable comprises a cable core and an insulated layer; the insulated layer is coated outside the cable core; the preparation method comprises the following steps: 1) mixing bisphenol F epoxy resin, cresol-formaldehyde resin, phenolic resin powder, lubricant, silicon dioxide, cryolite, magnesium hydroxide, diethyl malonate and calcium phosphate to obtain a mixture; and 2) coating the mixture outside the cable core by extrusion molding to obtain the insulated cable. The insulated cable prepared with the method has excellent insulation performance, the preparation method is simple and the raw materials are easily available.

Description

technical field [0001] The invention relates to cables, in particular to an insulated cable and a preparation method thereof. Background technique [0002] Insulated cables are one of the essential items in industry and civil use, mainly including cores and insulation layers. At present, insulated cables are mainly made of polymers, which have excellent insulation properties. [0003] Although the existing insulated cables can meet most of the production needs, in the specific high-voltage field, the insulation resistance of the insulated cables still needs to be improved, otherwise it will easily cause physical harm to users, even life-threatening . Contents of the invention [0004] The object of the present invention is to provide an insulated cable and a preparation method thereof. The insulated cable prepared by the method has excellent insulation resistance, and the preparation method is simple and the raw materials are easy to obtain. [0005] In order to achieve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/14H01B3/40C08L63/00C08L61/08C08L61/06C08K13/02C08K3/36C08K3/24C08K3/22C08K3/32
CPCH01B13/148C08L63/00C08L2203/202C08L2205/025C08L2205/03C08L2205/035H01B3/40C08L61/06C08K13/02C08K3/36C08K3/24C08K2003/2224C08K2003/325
Inventor 佘晨何源赵明哲李倩
Owner WUHU HANGTIAN SPECIAL CABLE FACTORY
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