CN103408246A

CN103408246A - Making method of high-voltage insulating cooked powder mica paper

Info

Publication number: CN103408246A
Application number: CN2013102840555A
Authority: CN
Inventors: 杨爱军; 张劲
Original assignee: Anhui Jiangwei Precision Manufacturing Co Ltd
Current assignee: Anhui Jiangwei Precision Manufacturing Co Ltd
Priority date: 2013-07-08
Filing date: 2013-07-08
Publication date: 2013-11-27

Abstract

The invention discloses a making method of high-voltage insulating cooked powder mica paper. The high-voltage insulating cooked powder mica paper is prepared from the following materials in parts by weight: 140-150 parts of mica, 2-3 parts of normal propyl alcohol, 3-5 parts of pentolite, 2-3 parts of polyvinyl alcohol, 1-2 parts of white alum, 3-4 parts of acrylic acid, 1-2 parts of sodium persulfate, 12-13 parts of oxidized starch, 1-2 parts of oxidized paraffin and a proper amount of water. According to the making method of the high-voltage insulating cooked powder mica paper, polyvinyl alcohol not only can be used for remarkably improving the surface adhesion of newly generated pulp sheet during a mica paper production process, but also can be used for improving the tension during the mica paper production to reduce the broken paper during the making of paper with pulp, so that the paper is formed by easily forming, the speed of a paper machine is improved, the production efficiency is improved, the production cost is effectively lowered, and the advantages, including puncture resistance, high insulation, heat insulation and the like, of the natural mica are kept. Besides, the mica paper which is made by the making method disclosed by the invention has good electrical strength and tensile strength.

Description

The manufacture method of the ripe mica paper of High-Voltage Insulation

Technical field

The present invention relates to the mica paper production technical field, particularly a kind of manufacture method of ultra-high voltage insulation cooked mica paper.

Background technology

Mica is a kind of laminar silicic acid salt mineral of Nature creating, the characteristic that has good physicals and electrical resistance and still keep above performance under the condition of high temperature, it has unreactiveness and noninflammability 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 (white mica, phlogopite, artificial mica synthesis) to be raw material, with chemical pulping or hydraulicefficiency machinery slurrying, copy into paper roll under the slower speed of a motor vehicle of mould machine, cut into again rolled paper 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 technique of research.

Summary of the invention

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

Technical scheme of the present invention is as follows:

The manufacture method of the ripe mica paper of a kind of High-Voltage Insulation is characterized in that: the raw material by following weight part is made: mica 140-150, n-propyl alcohol 2-3, guar gum 3-5, polyvinyl alcohol 2-3, alum 1-2, vinylformic acid 3-4, Sodium Persulfate 1-2, Sumstar 190 12-13, clorafin 1-2, water are appropriate.

(1) comprise the following steps:

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

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

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

(5) step (3) slurry is diluted to clinker content 3-4%, adds the white glue with vinyl that is equivalent to grog powder weight 4-5%, dispersed with stirring is even, the cylinder copy paper;

(6) dry: gained paper is dried to water content 0.2 ~ 0.5% and is got product in drying cylinder

Polyvinyl alcohol of the present invention can significantly improve newborn lodicule surface adhesion force in the mica paper production process, pulling force while improving mica paper production, disconnected paper while manufacturing paper with pulp with minimizing, thereby realize easily being wound into paper, improve paper machine speed, enhance productivity, effectively reduce production costs, kept again natural mica to resist wearing, high insulation, the advantage such as heat insulation, mica paper electrical strength and tensile strength that the present invention makes are good.

Embodiment

The manufacture method of the ripe mica paper of a kind of High-Voltage Insulation, by the raw material of following weight part (kilogram), made: mica 140, n-propyl alcohol 2, guar gum 5, polyvinyl alcohol 2, alum 2, vinylformic acid 3, Sodium Persulfate 1, Sumstar 190 12, clorafin 2, water are appropriate.

Comprise the following steps:

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

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

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

(4) step (3) slurry is diluted to clinker content 4%, adds the white glue with vinyl that is equivalent to grog powder weight 5%, dispersed with stirring is even, the cylinder copy paper;

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

The mica paper that the present invention makes, tensile strength are 2KN/m, voltage breakdown 42KV/mm.

Claims

1. the manufacture method of the ripe mica paper of High-Voltage Insulation, it is characterized in that: the raw material by following weight part is made: mica 140-150, n-propyl alcohol 2-3, guar gum 3-5, polyvinyl alcohol 2-3, alum 1-2, vinylformic acid 3-4, Sodium Persulfate 1-2, Sumstar 190 12-13, clorafin 1-2, 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 tripoly phosphate sodium STPP of 2-3%, grinding powder, obtain 50-120 order powder;

(4) step (3) slurry is diluted to clinker content 3-4%, adds the white glue with vinyl that is equivalent to grog powder weight 4-5%, dispersed with stirring is even, the cylinder copy paper;