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Transformer insulating paper good in chemical properties

A technology of chemical properties and transformers is applied in the field of transformers to achieve the effects of enhancing fire protection, improving whiteness and simple preparation method.

Inactive Publication Date: 2016-03-02
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 insulating paper for transformers with good chemical properties, 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, talcum powder 0.5, polyacrylic acid 0.4, alumina fiber 1.2, magnetic microspheres 0.6, deionized water in proper amount.

[0014] The insulating paper for a transformer with good chemical properties 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 for...

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Abstract

The invention discloses transformer insulating paper good in chemical properties. The transformer insulating paper is prepared from, by weight parts, 0.6-0.7 part of silane coupling agent kh5500, 6-8 parts of mica, 1-1.5 parts of glycine, 0.3-0.4 part of silane coupling agent kh5700, 0.1-0.2 part of emulsifier OP-10, 0.2-0.3 part of sodium dodecyl sulfate, 2-3 parts of E44 epoxy resin, 0.5-0.6 part of polyacrylamide, 500-550 parts of pulp board, 0.5-0.7 part of talc, 0.4-0.6 part of polyacrylic acid, 1.2-1.5 parts of alumina fiber, 0.6-0.8 part of magnetic microspheres and an appropriate amount of deionized water. A method for preparing the transformer insulating paper is simple, the process operability is good, the product stability is high, and the prepared insulating paper is good in chemical properties, resistant to radiation and corrosion, fireproof, insulating and worth popularizing.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to insulating paper for transformers with good chemical properties. 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 insulating...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H15/12D21H13/44D21H17/68D21H27/12H01B3/52H01F27/32
CPCD21H15/12D21H13/44D21H17/00D21H17/07D21H17/14D21H17/37D21H17/52D21H17/55D21H17/68D21H17/74D21H21/08D21H21/14D21H21/18D21H21/30D21H21/38H01B3/52H01F27/32
Inventor 李新满
Owner TONGLING SANJIA TRANSFORMER
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