CN103408255A - Making method of mica paper for capacitor - Google Patents

Abstract

The invention discloses a making method of mica paper for a capacitor. The mica paper for the capacitor is prepared from the following materials in parts by weight: 60-70 parts of mica, 10-12 parts of bamboo charcoal powder, 8-10 parts of cassava starch, 2-3 parts of a PAE (Polyarylether) wet strength agent, 1-2 parts of soyabean oil, 4-6 parts of dolomite powder, 2-3 parts of bauxite, 8-10 parts of sodium carboxymethyl cellulose, 1-2 parts of butylnaphthalene sodium sulfonate, 1-2 parts of borax, 1-2 parts of sodium hydroxide, 1-2 parts of ammonium persulfate and a proper amount of water. The mica paper for the capacitor is small in thickness, high in tension stress and high in dielectric strength and can be used for producing a mica capacitor which is small in size and puncture-resistant, so that a novel insulating material is provided for the electromechanical field.

Description

The electrical condenser manufacture method of mica paper

Technical field

The present invention relates to the mica paper production technical field, particularly a kind of electrical condenser manufacture method of 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:

A kind of electrical condenser is by the manufacture method of mica paper, and it is characterized in that: the raw material by following weight part is made: mica 60-70, bamboo charcoal powder 10-12, tapioca (flour) 8-10, PAE Wet Strength Resin 2-3, soybean oil 1-2, ground dolomite 4-6, bauxitic clay 2-3, Xylo-Mucine 8-10, sodium butylnaphthalenesulfonate 1-2, borax 1-2, sodium hydroxide 1-2, ammonium persulphate 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 phytic acid 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.

Electrical condenser prepared by the inventive method mica paper thin thickness, tension stress is high, and dielectric strength is high, can be used for producing little, the anti-mica capacitor punctured of volume, for dynamo-electric field provides new insulating material.

Embodiment

A kind of electrical condenser by the manufacture method of mica paper, is made by the raw material of following weight part (kilogram): mica 60, bamboo charcoal powder 10, tapioca (flour) 8, PAE Wet Strength Resin 3, soybean oil 2, ground dolomite 6, bauxitic clay 2, Xylo-Mucine 8, sodium butylnaphthalenesulfonate 2, borax 2, sodium hydroxide 2, ammonium persulphate 1, 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%, 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 phytic acid that is equivalent to grog powder weight 4-5%, dispersed with stirring is even, the cylinder copy paper;

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 1.6KN/m, voltage breakdown 37KV/mm.

Claims (1)

1. an electrical condenser is by the manufacture method of mica paper, and it is characterized in that: the raw material by following weight part is made: mica 60-70, bamboo charcoal powder 10-12, tapioca (flour) 8-10, PAE Wet Strength Resin 2-3, soybean oil 1-2, ground dolomite 4-6, bauxitic clay 2-3, Xylo-Mucine 8-10, sodium butylnaphthalenesulfonate 1-2, borax 1-2, sodium hydroxide 1-2, ammonium persulphate 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 phytic acid 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.