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Low-loss transformer insulation paper

A technology for transformers and insulating paper is applied in the field of transformers to achieve the effects of improving corrosion resistance, good application prospects and simple preparation method

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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Embodiment Construction

[0013] A low-loss insulating paper for transformers, 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, ten Sodium dialkyl sulfonate 0.2, E44 epoxy resin 2, sodium tripolyphosphate 0.2, pulp board 500, fly ash 0.7, polylysine 0.5, lignin fiber 2.1, cellulose ether 0.6, hydroxyapatite 1.2 , appropriate amount of deionized water.

[0014] Described a kind of insulating paper for transformer with low loss 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 l...

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Abstract

The invention discloses a low-loss transformer insulation paper, which 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, 0.2-0.3 of sodium tripolyphosphate, 500-550 of a pulp board, 0.7-0.9 of fly ash, 0.5-0.7 of polylysine, 2.1-2.5 of lignin fiber, 0.6-0.8 of cellulose ether, 1.2-1.6 of hydroxyapatite, and a proper amount of deionized water. The low-loss transformer insulation paper provided by the invention has simple preparation method, also has good corrosion resistance, high toughness and stability, low loss, and excellent performance, and can have good application prospect in transformers.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to a low-loss 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 insulating paper can be exten...

Claims

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Application Information

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IPC IPC(8): D21H15/12D21H13/44D21H13/38D21H17/68D21H27/12H01B3/52H01F27/32
CPCD21H15/12D21H13/28D21H13/44D21H17/07D21H17/14D21H17/52D21H17/53D21H17/55D21H17/67D21H17/68D21H17/74D21H21/14D21H21/18D21H21/34D21H21/38H01B3/52H01F27/32
Inventor 李新满
Owner TONGLING SANJIA TRANSFORMER
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