CN103410056A - Making method of high-voltage insulating mineral wool compound mica paper - Google Patents

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

The manufacture method of High-Voltage Insulation mineral wool combined mica paper

Technical field

The present invention relates to the mica paper production technical field, particularly a kind of manufacture method of High-Voltage Insulation mineral wool combined mica paper.

Background technology

Mica is a kind of laminar silicic acid salt mineral of Nature creating, the characteristic that has good physical property and electrical resistance and still keep above performance under the condition of high temperature, it has chemical inertness and low flammability completely, the most important thing is that it has anti-high voltage, corona-resistant and radiation-resistant characteristic.

Mica paper is to take fractus master slice (muscovite, phlogopite, artificial mica synthesis) to be raw material, with chemical pulping or hydraulic slurrying, copy into paper roll under the slower speed of a motor vehicle of cylinder mould machine, cut into again roll web or sheet paper, mica paper has kept the premium properties of natural mica, and even thickness, the dielectric strength fluctuation range is little, corona inception voltage is high and stable; The voltage characteristic of its dielectric loss is much more stable than the mica splitting insulation, and thermal conductivity is good.

But it is single to produce at present mica paper technique, adopt fecula or ripe powder production, electrical strength and the TENSILE STRENGTH of mica paper are undesirable, need the new production technology of research.

Summary of the invention

The manufacture method that the purpose of this invention is to provide a kind of High-Voltage Insulation mineral wool combined mica paper.

Technical scheme of the present invention is as follows:

A kind of manufacture method of High-Voltage Insulation mineral wool combined mica paper, it is characterized in that: the raw material by following weight portion is made: mica 90-100, mineral wool fiber 10-12, nano silicon 2-3, dolomite dust 2-3, aminopropyl triethoxysilane 2-3, water-soluble melamine resin 3-4, alumina powder 2-3, wet strength agent PAE 3-5, ethoxylated dodecyl alcohol 1-2, hydrogen peroxide 3-4, water are appropriate;

Comprise the following steps:

(1) by mica 700-800 ℃ of lower high-temperature calcination, calcine 1-2 hour the mica grog;

(2) grog is added to the Silane coupling agent KH550 that is equivalent to grog weight 3-4%, the sodium phosphate trimer of 2-3%, pulverize, obtain 50-120 order powder;

(3) by grog powder and other surplus stock mixing and water adding, to moisture be 40-50%, be heated to 80-90 ℃, stirring reaction 1-2 hour;

(4) step (3) slurry is diluted to clinker content 3-4%, adds the water-based polyhydroxy fluorocarbon resin that is equivalent to grog powder weight 4-5%, dispersed with stirring is even, the cylinder copy paper;

(5) dry: gained paper is dried to moisture 0.2 ~ 0.5% and is got product in drying cylinder.

The present invention take mineral wool fiber and mica compound, improve insulating properties, heat resistance, dipping, radiation resistance, the high temperature dimensional stability of mica paper, mica paper electrical strength and TENSILE STRENGTH that the present invention makes are good.

The specific embodiment

A kind of manufacture method of High-Voltage Insulation mineral wool combined mica paper, by the raw material of following weight portion (kilogram), made: mica 90, mineral wool fiber 12, nano silicon 3, dolomite dust 3, aminopropyl triethoxysilane 2, water-soluble melamine resin 3, alumina powder 3, wet strength agent PAE 5, ethoxylated dodecyl alcohol 1, hydrogen peroxide 4, water are appropriate;

Comprise the following steps:

(1) by mica 700-800 ℃ of lower high-temperature calcination, calcine 1-2 hour the mica grog;

(2) grog is added to the Silane coupling agent KH550 that is equivalent to grog weight 4%, 3% sodium phosphate trimer, pulverize, obtain 50-120 order powder;

(3) by grog powder and other surplus stock mixing and water adding, to moisture be 40-50%, be heated to 80-90 ℃, stirring reaction 1-2 hour;

(4) step (3) slurry is diluted to clinker content 3-4%, adds the water-based polyhydroxy fluorocarbon resin that is equivalent to grog powder weight 4%, dispersed with stirring is even, the cylinder copy paper;

(5) dry: gained paper is dried to moisture 0.2 ~ 0.5% and is got product in drying cylinder.

The mica paper that the present invention makes, TENSILE STRENGTH are 1.5KN/m, breakdown voltage 47KV/mm.

Claims (1)

1. the manufacture method of a High-Voltage Insulation mineral wool combined mica paper, it is characterized in that: the raw material by following weight portion is made: mica 90-100, mineral wool fiber 10-12, nano silicon 2-3, dolomite dust 2-3, aminopropyl triethoxysilane 2-3, water-soluble melamine resin 3-4, alumina powder 2-3, wet strength agent PAE 3-5, ethoxylated dodecyl alcohol 1-2, hydrogen peroxide 3-4, water are appropriate;

Comprise the following steps:

(1) by mica 700-800 ℃ of lower high-temperature calcination, calcine 1-2 hour the mica grog;

(2) grog is added to the Silane coupling agent KH550 that is equivalent to grog weight 3-4%, the sodium phosphate trimer of 2-3%, pulverize, obtain 50-120 order powder;

(3) by grog powder and other surplus stock mixing and water adding, to moisture be 40-50%, be heated to 80-90 ℃, stirring reaction 1-2 hour;

(4) step (3) slurry is diluted to clinker content 3-4%, adds the water-based polyhydroxy fluorocarbon resin that is equivalent to grog powder weight 4-5%, dispersed with stirring is even, the cylinder copy paper;

(5) dry: gained paper is dried to moisture 0.2 ~ 0.5% and is got product in drying cylinder.