Making method of high-voltage insulating mineral wool compound mica paper

A composite mica and high-voltage insulation technology, which is applied in the direction of insulators, organic insulators, plastic/resin/wax insulators, etc., can solve the problems of single mica paper process, unsatisfactory electrical strength and tensile strength of mica paper, and achieve electric strength and Good tensile strength and effect of improving insulation

Inactive Publication Date: 2013-11-27
ANHUI JIANGWEI PRECISION IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the current production process of mica paper is single, using raw powder or cooked powder for production, the electrical strength and tensile strength of mica paper are not ideal, and a new production process needs to be studied

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] A method for manufacturing high-voltage insulating mineral wool composite mica paper, which is made of the following parts by weight (kg) of raw materials: mica 90, mineral wool fiber 12, nano silica 3, dolomite powder 3, aminopropyl triethoxy Silane 2, water-soluble melamine formaldehyde resin 3, alumina powder 3, wet strength agent PAE 5, polyoxyethylene laureth ether 1, hydrogen peroxide, 4, appropriate amount of water;

[0016] It includes the following steps:

[0017] (1) The mica is calcined at a high temperature of 700-800℃, and calcined for 1-2 hours to obtain mica clinker;

[0018] (2) Add clinker with 4% silane coupling agent KH550 and 3% sodium tripolyphosphate equivalent to the weight of clinker, and grind into powder to obtain 50-120 mesh powder;

[0019] (3) Mix the clinker powder with other remaining raw materials and add water until the water content is 40-50%, heat to 80-90°C, and stir for 1-2 hours;

[0020] (4) Dilute the slurry in step (3) to 3-4% clinker con...

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Abstract

The invention discloses a making method of high-voltage insulating mineral wool compound mica paper. The high-voltage insulating mineral wool compound mica paper is prepared from the following materials in parts by weight: 90-100 parts of mica, 10-12 parts of mineral wool fiber, 2-3 parts of nanometer silicon dioxide, 2-3 parts of dolomite powder, 2-3 parts of aminopropyl triethoxysilane, 3-4 parts of water-soluble melamino-formaldehyde resin, 2-3 parts of aluminum oxide powder, 3-5 parts of wet strength agent PAE (Polyarylether), 1-2 parts of polyoxyethylene lauryl ether, 3-4 parts of hydrogen peroxide and a proper amount of water. According to the manufacturing method of the high-voltage insulated mineral wool compound mica paper, the mineral wool fiber is compounded with the mica, so that the insulation, the heat resistance, the impregnation, the radiation resistance and the high-temperature dimension stability of the mica paper are improved. The mica paper which is made by the making method disclosed by the invention has good electrical strength and good tensile strength.

Description

Technical field [0001] The invention relates to the technical field of mica paper production, in particular to a method for manufacturing high-voltage insulating mineral wool composite mica paper. Background technique [0002] Mica is a naturally occurring layered silicate mineral with excellent physical and electrical properties and the characteristics of maintaining the above properties at high temperatures. It is completely chemically inert and non-flammable. The most important thing is It is resistant to high voltage, corona discharge and radiation protection. [0003] Mica paper is made of broken mica flakes (muscovite, phlogopite, synthetic mica) as raw materials, and is made into paper rolls by chemical pulping or hydraulic mechanical pulping at the slower speed of a cylinder paper machine, and then cut into rolls Roll paper or flat paper, mica paper maintains the excellent properties of natural mica, and has uniform thickness, small dielectric strength fluctuation range, h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/12D21H13/44D21H13/36
Inventor 杨爱军张劲
Owner ANHUI JIANGWEI PRECISION IND
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