CN103408282A - Production method of high-voltage mica paper - Google Patents

Abstract

The invention provides a production method of high-voltage mica paper. The production method is characterized in that the high-voltage mica paper is produced by adopting the following raw materials in parts by weight: 125-130 parts of mica, 3-4 parts of vinyl triethoxy silane, 3-4 parts of sodium metasilicate, 1-2 parts of ethanol, 2-3 parts of polyvinyl acetate emulsion, 4-5 parts of sepiolite powder, 2-3 parts of vermiculite, 1-2 parts of sodium tripolyphosphate, 1-2 parts of sodium carboxymethyl cellulose, 1-2 parts of sodium persulfate and a right amount of water. The high-voltage mica paper resists high temperature, high voltage, ageing and corrosion; the insulating strength of the high-voltage mica paper reaches grade-A. The high-voltage mica paper cannot be replaced by other materials in terms of high temperature resistance and cycling processability and has good electric strength and tensile strength.

Description

A kind of manufacture method of high voltage mica paper

Technical field

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

Technical scheme of the present invention is as follows:

A kind of manufacture method of high voltage mica paper is characterized in that: the raw material by following weight part is made: mica 125-130, vinyltriethoxysilane 3-4, Starso 3-4, ethanol 1-2, polyvinyl acetate emulsion 2-3, sepiolite powder 4-5, vermiculite power 2-3, tripoly phosphate sodium STPP 1-2, Xylo-Mucine 1-2, Sodium Persulfate 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;

(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 3-4%, adds the polytetrafluorethylepowder powder 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 water content 0.2 ~ 0.5% and is got product in drying cylinder.

The present invention is high temperature resistant, high pressure, ageing-resistant, corrosion-resistant, and insulation strength reaches the A level.Particularly its high temperature resistant and re-workability is that other material institute is irreplaceable, and mica paper electrical strength and tensile strength that the present invention makes are good.

Embodiment

A kind of manufacture method of high voltage mica paper, by the raw material of following weight part (kilogram), made: mica 125, vinyltriethoxysilane 3, Starso 4, ethanol 1, polyvinyl acetate emulsion 2, sepiolite powder 4, vermiculite power 2, tripoly phosphate sodium STPP 2, Xylo-Mucine 2, Sodium Persulfate 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 4%, 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 3-4%, adds the polytetrafluorethylepowder powder 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)

1. the manufacture method of a high voltage mica paper, it is characterized in that: the raw material by following weight part is made: mica 125-130, vinyltriethoxysilane 3-4, Starso 3-4, ethanol 1-2, polyvinyl acetate emulsion 2-3, sepiolite powder 4-5, vermiculite power 2-3, tripoly phosphate sodium STPP 1-2, Xylo-Mucine 1-2, Sodium Persulfate 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;

(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 3-4%, adds the polytetrafluorethylepowder powder 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 water content 0.2 ~ 0.5% and is got product in drying cylinder.