Preparation method of insulation material for electrical equipment

A technology for insulating materials and power equipment, applied in the field of preparation of insulating materials, can solve problems such as poor corrosion resistance, high heat resistance, and affecting the service life of power cables, and achieve strong hydration resistance, reduced material costs, and high resistance. Effect

Inactive Publication Date: 2018-08-14
HEFEI SHANGQIANG ELECTRIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, my country's electric power industry has developed rapidly, the operating voltage level of the grid system has been continuously improved, and the network scale has gradually expanded. The ultra-high or ultra-high voltage transmission network is the backbone and core of the smart grid that the State Grid is building. Significantly improve the transmission capacity of my country's power grid and reduce long-distance power transmission losses, but higher voltage levels and DC transmission pose a major challenge to the safety and reliability of insulating materials widely used in electrical equipment. High-performance insulating materials are components of high-voltage,

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0023] Example 1

[0024] A method for preparing an insulating material for electric equipment, comprising the following steps:

[0025] a. Mix magnesia, silicon dioxide and cellulose, introduce into a ball mill, and ball mill to pass through a 300-mesh sieve to obtain a mixture 1;

[0026] b. Mix epoxy resin, paraffin wax, polytetrafluoroethylene and silane coupling agent into the internal mixer for banburying for 4 hours, the banburying temperature is 420°C, then add plasticizer, inorganic thickener and deionized water, Cool down to 80°C, stir and react at 140r / min for 25min to obtain mixture 2;

[0027] c. Add mixture 1 to mixture 2, then add nano-zinc oxide, nano-calcium carbonate and dispersant, heat and react at 180° C. for 1 hour, and obtain mixture 3;

[0028] d. Add dibenzoyl peroxide, nano-aluminum oxide and anionic surfactant to the mixture three, stir for 40min at a speed of 2000r / min, and then import it into a twin-screw extruder, and melt extrude at 260°C Take...

Example Embodiment

[0036] Example 2

[0037] A method for preparing an insulating material for electric equipment, comprising the following steps:

[0038] a. Mix magnesia, silicon dioxide and cellulose, introduce into a ball mill, and ball mill to pass through a 300-mesh sieve to obtain a mixture 1;

[0039] b. Mix epoxy resin, paraffin wax, polytetrafluoroethylene and silane coupling agent into the internal mixer for banburying for 2 hours, the banburying temperature is 350°C, then add plasticizer, inorganic thickener and deionized water, Cool down to 80°C, stir and react at 120r / min for 25min to obtain mixture 2;

[0040] c. Add mixture 1 to mixture 2, then add nano-zinc oxide, nano-calcium carbonate and dispersant, heat and react at 160°C for 1 hour, and obtain mixture 3;

[0041] d. Add dibenzoyl peroxide, nano-aluminum oxide and anionic surfactant to the mixture three, stir for 30min at a speed of 1200r / min, and then import it into a twin-screw extruder, and melt extrude at 260°C Take o...

Example Embodiment

[0049] Example 3

[0050] A method for preparing an insulating material for electric equipment, comprising the following steps:

[0051] a. Mix magnesia, silicon dioxide and cellulose, introduce into a ball mill, and ball mill to pass through a 500-mesh sieve to obtain a mixture 1;

[0052] b. Mix epoxy resin, paraffin wax, polytetrafluoroethylene and silane coupling agent into the internal mixer for banburying for 4 hours, the banburying temperature is 420°C, then add plasticizer, inorganic thickener and deionized water, Cool down to 100°C, stir and react for 30min at a speed of 140r / min to obtain mixture 2;

[0053] c. Add mixture 1 to mixture 2, then add nano-zinc oxide, nano-calcium carbonate and dispersant, heat and react at 180°C for 2 hours, and obtain mixture 3;

[0054] d. Add dibenzoyl peroxide, nano-aluminum oxide and anionic surfactant to the mixture three, stir for 30min at a speed of 1200r / min, and then import it into a twin-screw extruder, and melt extrude at ...

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PUM

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Abstract

The invention provides a preparation method of an insulation material for electrical equipment. The method comprises the following steps that a, magnesium oxide, silicon dioxide and cellulose are mixed; ball grinding is performed to obtain a first mixture; b, epoxy resin, paraffin, polytetrafluoroethylene and a silane coupling agent are subjected to mixing and banburying; then, a plasticizer, an inorganic thickening agent and deionized water are added; stirring reaction is performed to obtain a second mixture; c, the first mixture is added into the second mixture; then, nanometer zinc oxide, nanometer calcium carbonate and a dispersing agent are added; heating reaction is performed to obtain a third mixture; d, dibenzoyl peroxide, nanometer aluminum oxide and an anionic surfactant are added into the third mixture for stirring; the mixture is guided into a double screw extruder; extrusion molding is formed; cooling is performed to normal temperature. The prepared insulation material hasthe effects of corrosion resistance, humidity resistance, high temperature resistance and flame retardance; good mechanical performance and electric performance are realized; the insulation materialis applicable to various kinds of electric equipment.

Description

technical field [0001] The invention belongs to the technical field of insulating materials, and in particular relates to a method for preparing insulating materials used in electric equipment. Background technique [0002] In recent years, my country's electric power industry has developed rapidly, the operating voltage level of the grid system has been continuously improved, and the network scale has gradually expanded. The ultra-high or ultra-high voltage transmission network is the backbone and core of the smart grid that the State Grid is building. Significantly improve the transmission capacity of my country's power grid and reduce long-distance power transmission losses, but higher voltage levels and DC transmission pose a major challenge to the safety and reliability of insulating materials widely used in electrical equipment. High-performance insulating materials are components of high-voltage, The technical core and key of UHV power transmission and transformation eq...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08L91/06C08L27/18C08L1/28C08K13/02C08K3/22C08K3/36C08K3/26C08K5/14C08K5/12C08K5/11C08K3/04C08K3/34
CPCC08L63/00C08K2003/222C08K2003/2227C08K2003/2296C08K2003/265C08K2201/011C08L1/28C08L1/284C08L1/286C08L27/18C08L91/06C08L2201/02C08L2201/08C08L2203/20C08L2205/035C08K13/02C08K3/22C08K3/36C08K3/26C08K5/14C08K5/12C08K5/11C08K3/04C08K3/346
Inventor 程劲松
Owner HEFEI SHANGQIANG ELECTRIC TECH CO LTD
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