CN103408257A - Preparation method of high pressure resistant mica paper - Google Patents

Abstract

The invention provides a preparation method of high pressure resistant mica paper. The mica paper is prepared from the following raw materials in parts by weight: 42-52 parts of mica, 12-13 parts of polyester fibers, 2-3 parts of nano bentonite, 1-2 parts of tantalum boride, 1-2 parts of lauryl dimethyl amine oxide, 4-5 parts of white latex, 2-4 parts of lauryl sodium sulfate, 0.6-1 part of gamma-aminopropyltriethoxysilane, 4-5 parts of aluminium hydroxide powder and a defined amount of water. The mica paper has better high pressure resistance and good tensile property and preserves the advantages of natural mica, such as breakdown resistance, high insulativity, heat insulation and the like. The mica paper prepared by the preparation method has good electric strength and tensile strength.

Description

The manufacture method of high pressure resistant mica paper

Technical field

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

Technical scheme of the present invention is as follows:

A kind of manufacture method of high pressure resistant mica paper is characterized in that: the raw material by following weight part is made: mica 42-52, polyster fibre 12-13, nano-bentonite 2-3, tantalum boride 1-2, lauryl dimethyl amine oxide 1-2, white glue with vinyl 4-5, sodium lauryl sulphate 2-4, γ-aminopropyl triethoxysilane 0.6-1, aluminium-hydroxide powder 4-5, 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 carboxymethyl cellulose 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 present invention has high voltage performance preferably, and pull resistance is good, has kept natural mica to resist wearing, high insulation, the advantage such as heat insulation, and mica paper electrical strength and tensile strength that the present invention makes are good.

Embodiment

A kind of manufacture method of high pressure resistant mica paper, by the raw material of following weight part (kilogram), made: mica 42-, polyster fibre 13, nano-bentonite 3, tantalum boride 2, lauryl dimethyl amine oxide 2, white glue with vinyl 4, sodium lauryl sulphate 4, γ-aminopropyl triethoxysilane 0.6, aluminium-hydroxide powder 5, 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%, 2% 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 carboxymethyl cellulose 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.

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

Claims (1)

1. the manufacture method of a high pressure resistant mica paper, it is characterized in that: the raw material by following weight part is made: mica 42-52, polyster fibre 12-13, nano-bentonite 2-3, tantalum boride 1-2, lauryl dimethyl amine oxide 1-2, white glue with vinyl 4-5, sodium lauryl sulphate 2-4, γ-aminopropyl triethoxysilane 0.6-1, aluminium-hydroxide powder 4-5, 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 carboxymethyl cellulose 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.