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Mildew-proof and antipollution insulation paper for transformers

A technology for insulating paper and transformers is applied in the field of transformers to achieve the effects of simple production process, improved flame retardancy and long service life

Inactive Publication Date: 2016-02-24
TONGLING SANJIA TRANSFORMER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using mica to modify insulating paper can obtain insulating paper with better performance, but there are few researches on this aspect at home and abroad.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] An anti-mold and anti-pollution transformer insulating paper, prepared from the following raw materials in parts by weight (kg): silane coupling agent kh5500.6, mica 6, glycine 1, silane coupling agent kh5700.3, emulsifier OP, Sodium dodecylsulfonate 0.2, E44 epoxy resin 2, polyacrylamide 0.5, pulp board 500, expanded graphite 1.2, EVA emulsion 1.8, starch cellulose 2.3, nano antimony-doped tin dioxide 0.3, deionized water in proper amount.

[0014] The anti-mildew and anti-pollution transformer insulating paper is prepared by the following specific steps:

[0015] (1) Add the silane coupling agent kh550 into the solution with a mass ratio of ethanol to water of 1:1, heat it in a water bath to 35°C, add dropwise oxalic acid to adjust the pH value to 4, hydrolyze for 1 hour, and dip the mica sheet into Stir and soak in 75% ethanol for 1 h, then ultrasonically wash for 10 min, soak in deionized water for 0.5 h, and finally place in an oven to dry at 110°C for 2 h, grind f...

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Abstract

The invention discloses a mildew-proof and antipollution insulation paper for transformers. The mildew-proof and antipollution insulation paper for transformers is prepared from the following raw materials by weight part: 0.6-0.7 of a silane coupling agent kh550, 6-8 of mica, 1-1.5 of glycine, 0.3-0.4 of a silane coupling agent kh570, 0.1-0.2 of an emulsifier OP-10, 0.2-0.3 of sodium dodecyl sulfate, 2-3 of E44 epoxy resin, 0.5-0.6 of polyacrylamide, 500-550 of a pulp board, 1.2-1.5 of expanded graphite, 1.8-2.2 of an EVA emulsion, 2.3-2.8 of starch cellulose, 0.3-0.5 of nano-antimony doped tin dioxide, and a proper amount of deionized water. The insulation paper prepared by the invention has simple production technology and good controllability, also has good mildew-proof, antipollution, heat-proof, radiation-resistant, moisture-proof and other performance, and has long service life, thus being worth promoting.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to a mold-proof and pollution-proof insulating paper for transformers. Background technique [0002] In recent years, with the rapid development of my country's electric power, electrical, electronics, home appliances and communications industries, people have higher and higher requirements for transformers. Cellulose insulating paper is one of the most widely used internal insulating materials in oil-immersed power transformers. Since it cannot be replaced during operation, its mechanical and insulating properties directly determine the service life of the transformer. In the actual transformer, the insulating paper is subjected to high-intensity electric field stress for a long time, and once a breakdown occurs, the transformer will fail. If the electrical performance of insulating paper can be improved, the usage of insulating paper can be saved, the working life of insulat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H15/12D21H13/44D21H13/28D21H17/67D21H27/12H01B3/52H01F27/32
CPCD21H15/12D21H13/28D21H13/44D21H17/00D21H17/07D21H17/14D21H17/35D21H17/52D21H17/55D21H17/67D21H17/74D21H21/08D21H21/14D21H21/16D21H21/18D21H21/34D21H21/36H01B3/52H01F27/32
Inventor 李新满
Owner TONGLING SANJIA TRANSFORMER
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