Chitin modified aramid fiber-based insulation paper for transformer and preparation method thereof

Abstract

The invention discloses chitin modified aramid fiber-based insulation paper for a transformer. The chitin modified aramid fiber-based insulation paper is prepared from the following raw materials in parts by weight: 35-50 parts of aramid fiber, 15-25 parts of glass fiber, 45-70 parts of chlorosulfonic acid, 16-24 parts of phosphorous oxychloride, 3-7 parts of ammonium chloride, appropriate amount of deionized water, appropriate amount of chloroform, 0.2-1 part of vinyl trimethoxy silane, 8-17 parts of nanosilicon dioxide, appropriate amount of absolute ethyl alcohol, appropriate amount of cyclohexanone, 1-2 parts of cuprous bromide, 2-6 parts of dipyridyl, 1-2 parts of antioxidant CA, 1-4 parts of carboxymethyl cellulose sodium, 1-2 parts of urea, 3-6 parts of chitin powder, and 4-9 parts of nanometer TiO2. The aramid fiber and the glass fiber are mixed and pulped, and then a -SO2Cl group is introduced into the fiber surface to react with double-bond modified nanosilicon dioxide, thereby achieving the effect of improving the caking property of a fiber interface, the mechanical property, the corrosion resistance, the high temperature resistance, the strength and other properties of the insulation paper are improved, and the dielectric constant of a product is low.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to a chitin-modified aramid fiber-based insulating paper for transformers and a preparation method thereof. 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. [0003] At present, the insulating paperboard produced in my country is mainly B-grade and F-grade, and there are some deficiencies in some performance aspects, such as unstable performance, poor mechanical strength, insufficient high temperature resistance, poor aging resistance, and p...

AI Technical Summary

Problems solved by technology

[0003] At present, the insulating paperboard produced in my country is mainly B-grade and F-grade, and there are some deficiencies in some performance aspects, such as unstable performance, poor mechanical strength, insufficient high temperature resistance, poor aging resistance, and pollution to the environment. It affects the prospect of transformer equipment developing towards miniaturization, large capacity and UHV