Preparation of corundum fiber insulating paper for transformers

A technology of corundum fiber and insulating paper, applied in the field of transformers, to achieve the effect of low raw material cost, not easy to gather, and wide sources

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

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Problems solved by technology

Using inorganic fillers to modify insulating paper can obtain insulating paper w...

Method used

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Embodiment Construction

[0013] A preparation of corundum fiber insulating paper for transformers, which is 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, corundum Fiber 2.3, ammonium polyphosphate 0.5, urea 0.8, hydroxymethyl starch 0.6, polyethylene oxide 0.2, appropriate amount of deionized water.

[0014] The preparation of the corundum fiber insulating paper for a transformer 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, then add corundum fiber to soak for 4h after heating to 8...

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Abstract

The invention discloses preparation of a corundum fiber insulating paper for transformers. The corundum fiber insulating paper for transformers 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, 2.3-2.6 of corundum fiber, 0.5-0.6 of ammonium polyphosphate, 0.8-0.9 of urea, 0.6-0.8 of hydroxymethyl starch, 0.2-0.4 of polyethylene oxide, and a proper amount of deionized water. The preparation method provided by the invention is simple, the raw materials are low in cost and have wide sources, the prepared insulating paper has good performance and high stability, and has good use prospect as an insulating part of transformers.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to the preparation of corundum fiber insulating paper for transformers. 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 ...

Claims

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Application Information

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IPC IPC(8): D21H15/12D21H13/36D21H17/48D21H17/67D21H27/12H01B3/52H01F27/32
CPCD21H15/12D21H13/36D21H17/07D21H17/28D21H17/48D21H17/52D21H17/66D21H17/67D21H17/74D21H21/14D21H21/143D21H21/18D21H21/34H01B3/52H01F27/32
Inventor 李新满
Owner TONGLING SANJIA TRANSFORMER
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