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A kind of preparation method of high temperature resistant electric wire and corresponding composite precursor ceramic belt

A technology of precursor ceramics and manufacturing methods, which is applied in the direction of cable/conductor manufacturing, conductors, circuits, etc., can solve the problems of high manufacturing cost, easy aging and detachment, easy aging, etc., and achieve simple manufacturing process, low cost, and good flexibility Effect

Active Publication Date: 2017-12-29
GUANGZHOU MINGXING CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Organic insulating materials are prone to aging under long-term energized state
The mica film composite tape is actually coated on the wrapped organic carrier with mica material through an adhesive, and it is also easy to age and detach at high temperature, and the manufacturing cost is expensive and the processing is inconvenient.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The fabrication process of the composite precursor ceramic tape is as follows:

[0028] Step 1: Powder ingredients

[0029] By weight percentage: CuO 1%, B 2 o 3 0.3%, LiF 2%, La 2 o 3 0.5%, SrTiO 3 5%, the rest is Al 2 o 3 , carry out powder batching, fully stir to obtain mixed powder;

[0030] Step 2: The first ultrasonic dispersion treatment

[0031] Perform the first ultrasonic dispersion treatment on the mixed powder, and the treatment time is 20 minutes;

[0032] Step 3: The first ball milling treatment

[0033] Use 95% pure industrial alcohol solvent and binary azeotrope formed by butanone in a weight ratio of 3:1 as solvent, and use castor oil as dispersant to fully wet the powder with the solvent; at a ball milling speed of 400 rpm , ball milling for 30 minutes to better disperse the powder; obtain a primary slurry with a viscosity of 3Pa.S;

[0034] Step 4: The second ultrasonic dispersion treatment

[0035] Perform the second ultrasonic dispers...

Embodiment 2

[0048] The fabrication process of the composite precursor ceramic tape is as follows:

[0049] Step 1: Powder ingredients

[0050] By weight percentage: CuO 2%, B 2 o 3 5%, LiF 5%, La 2 o 3 0.8%, SrTiO 3 8%, the rest is Al 2 o 3 , carry out powder batching, fully stir to obtain mixed powder;

[0051] Step 2: The first ultrasonic dispersion treatment

[0052] Perform the first ultrasonic dispersion treatment on the mixed powder, and the treatment time is 20 minutes;

[0053] Step 3: The first ball milling treatment

[0054]Use 95% pure industrial alcohol solvent and binary azeotrope formed by butanone in a weight ratio of 3:1 as solvent, and use castor oil as dispersant to fully wet the powder with the solvent; at a ball milling speed of 400 rpm , ball milling for 30 minutes to better disperse the powder; obtain a primary slurry with a viscosity of 5Pa.S;

[0055] Step 4: The second ultrasonic dispersion treatment

[0056] Perform the second ultrasonic dispersion...

Embodiment 3

[0069] The fabrication process of the composite precursor ceramic tape is as follows:

[0070] Step 1: Powder ingredients

[0071] By weight percentage: CuO 5%, B 2 o 3 8.85%, LiF 6.5%, La 2 o 3 0.8%, SrTiO 3 8%, the rest is Al 2 o 3 , carry out powder batching, fully stir to obtain mixed powder;

[0072] Step 2: The first ultrasonic dispersion treatment

[0073] Perform the first ultrasonic dispersion treatment on the mixed powder, and the treatment time is 20 minutes;

[0074] Step 3: The first ball milling treatment

[0075] Use 95% pure industrial alcohol solvent and binary azeotrope formed by butanone in a weight ratio of 3:1 as solvent, and use castor oil as dispersant to fully wet the powder with the solvent; at a ball milling speed of 400 rpm , ball milling for 30 minutes to better disperse the powder; obtain a primary slurry with a viscosity of 5.5Pa.S;

[0076] Step 4: The second ultrasonic dispersion treatment

[0077] Perform the second ultrasonic di...

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Abstract

The present invention relates to a high temperature-resistant wire and a preparation method of a corresponding composite precursor ceramic tape. According to the embodiments provided by the preparation method, CuO, B2O3, LiF, La2O3, SrTiO3, Al2O3, alcohol, butanone, polyvinyl butyral, dibutyl phthalate, ethylene glycol, n-butanol, ethylene glycol and the like are adopted to prepare the composite precursor ceramic tape; a metal conductor is wrapped with the composite precursor ceramic tape; and the outer layer of the composite precursor ceramic tape is wrapped with a polyamide-imide insulation layer. The high temperature-resistant wire provided by the invention has the advantages of remarkable high temperature resistance and securer application.

Description

technical field [0001] The invention belongs to the field of power transmission and distribution line equipment, and relates to a method for preparing electric wires and corresponding composite precursor ceramic tapes, in particular to a preparation method for high-temperature resistant electric wires and corresponding composite precursor ceramic tapes. Background technique [0002] Electromagnetic wires are mainly divided into two categories: enameled wires and wrapped wires. With the development of high-voltage motors, special motors and electrical appliances, there are more and more wrapped wires made of various film insulating tapes such as polyester film and mica film composite tape. Organic insulating materials are prone to aging when they are energized for a long time. The mica film composite tape is actually coated on the wrapping organic carrier with mica material through an adhesive, and it is also easy to age and detach at high temperature, and the manufacturing c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B7/29H01B13/00C04B35/10C04B35/622C04B35/626
CPCC04B35/10C04B35/622C04B35/6261C04B35/62635C04B35/6264C04B2235/3227C04B2235/3236C04B2235/3281C04B2235/3409C04B2235/445C04B2235/60C04B2235/96H01B7/29H01B13/00
Inventor 范雷方沈刚吴振江
Owner GUANGZHOU MINGXING CABLE