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High breakdown strength transformer insulation paper

A high breakdown strength, transformer technology, applied in the field of transformers, achieves good application prospects, is not easy to aggregate, and enhances the effect of weather resistance

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 inorganic fillers 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 high breakdown strength, prepared from the following raw materials in parts by weight (kg): nano-titanium dioxide 12, phenolic resin 2, pulp board 500, sodium silicate 1.3, sodium carboxymethyl cellulose 1, Carbon black 1.3, aramid fiber 4.4, bakelite 25, rosin pentaerythritol ester 0.5, butyl methacrylate 0.5, appropriate amount of deionized water.

[0014] The insulating paper for a transformer with high breakdown strength is prepared by the following specific steps:

[0015] (1) Dry nano-titanium dioxide in an oven at 100°C for 30 minutes, add it to 0.5wt% silane coupling agent kh550 absolute ethanol solution after cooling, and then reflux the solution to condense, take it out, dry and grind it to be use;

[0016] (2) Mix the phenolic resin with a solid content of 15% and the product prepared in step (1) evenly, and then heat to 80°C and stir for 0.5h to react, then add aramid fiber to soak for 4h at a constant temperature, ...

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Abstract

The invention discloses a high breakdown strength transformer insulation paper, which is prepared from the following raw materials by weight part: 12-15 of nano-titanium dioxide, 2-3 of phenolic resin, 500-550 of a pulp board, 1.3-1.5 of sodium silicate, 1-1.3 of sodium carboxymethyl cellulose, 1.3-1.5 of carbon black, 4.4-5 of aramid fiber, 25-30 of bakelite, 0.5-0.7 of pentaerythritol ester of rosin, 0.5-0.7 of butyl methacrylate, and a proper amount of deionized water. The insulation paper provided by the invention has the advantages of long service life, high breakdown voltage, good safety, and good application prospect in transformers.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to insulating paper for transformers with high breakdown strength. Background technique [0002] Insulating paper is widely used as insulating material for equipment such as motors, cables, capacitors and transformers, and is also the main component material of insulating materials such as laminated products, composite materials and prepreg materials. Due to the special use of insulating paper, it is required to have some characteristics different from other paper types, mainly including mechanical properties, electrical properties and thermal stability. Moreover, due to the different environments in which various types of electrical equipment are used, such as motors operating under hot and humid conditions, motors in chemical plants that are often exposed to high concentrations of corrosive chemical media, and motors operating under radioactive radiation, the insulating paper...

Claims

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Application Information

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IPC IPC(8): D21H15/10D21H13/26D21H17/68D21H27/12H01B3/52H01F27/32
CPCD21H15/10D21H13/26D21H17/00D21H17/14D21H17/26D21H17/48D21H17/62D21H17/66D21H17/67D21H17/68D21H17/74D21H21/14D21H21/143D21H21/18D21H21/38H01B3/52H01F27/32
Inventor 李新满
Owner TONGLING SANJIA TRANSFORMER
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