CN103410055A - Preparation method of mica paper with good impregnation property - Google Patents

Abstract

The invention provides a preparation method of mica paper with good impregnation property. The mica paper is prepared from the following raw materials in parts by weight: 140-150 parts of mica, 6-8 parts of acrylic emulsion, 2-3 parts of fatty acid macrogol ester, 1-2 parts of anilmomethyl triethoxy silane, 16-20 parts of VAE (vinyl acetate ethylene) emulsion DA101, 0.4-0.6 parts of benzotriazole, 1-2 parts of ammonium persulfate, 2-3 parts of maleic anhydride and a defined amount of water. The preparation method has the beneficial effects that the sodium bicarbonate component is added, so that the mica paper can bubble, thus increasing the porosity of the mica paper, improving the impregnation effect, improving the insulating property and maintaining the advantages of natural mica, such as breakdown resistance and heat insulation; the mica paper prepared by the preparation method has good electric strength and tensile strength.

Description

The manufacture method of the mica paper that dipping property is good

Technical field

The present invention relates to the mica paper production technical field, the manufacture method of the mica paper that particularly a kind of dipping property is good.

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 the mica paper that a kind of dipping property is good.

Technical scheme of the present invention is as follows:

The manufacture method of the mica paper that a kind of dipping property is good is characterized in that: the raw material by following weight portion is made: mica 140-150, acrylic emulsion 6-8, fatty acid polyethylene glycol ester 2-3, anilinomethyl triethoxysilane 1-2, VAE emulsion DA101 16-20, phenylpropyl alcohol triazole 0.4-0.6, ammonium persulfate 1-2, maleic anhydride 2-3, 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 sodium bicarbonate that is equivalent to grog powder weight 4-5%, dispersed with stirring is even, the cylinder copy paper;

Dry: gained paper is dried to moisture 0.2 ~ 0.5% and is got product in drying cylinder.

The present invention has increased the sodium bicarbonate composition, can bubble, and has increased the voidage of mica paper, increases dipping effect, improves insulating properties, the advantage such as has kept natural mica to resist wearing, heat insulation, and mica paper electrical strength and TENSILE STRENGTH that the present invention makes are good.

The specific embodiment

The manufacture method of the mica paper that a kind of dipping property is good, by the raw material of following weight portion (kilogram), made: mica 140, acrylic emulsion 6, fatty acid polyethylene glycol ester 2, anilinomethyl triethoxysilane 2, VAE emulsion DA101 16, phenylpropyl alcohol triazole 0.6, ammonium persulfate 1, maleic anhydride 3, 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 sodium bicarbonate that is equivalent to grog powder weight 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 mica paper that the present invention makes, TENSILE STRENGTH are 2.3KN/m, breakdown voltage 42KV/mm.

Claims (1)

1. the manufacture method of the mica paper that dipping property is good, it is characterized in that: the raw material by following weight portion is made: mica 140-150, acrylic emulsion 6-8, fatty acid polyethylene glycol ester 2-3, anilinomethyl triethoxysilane 1-2, VAE emulsion DA101 16-20, phenylpropyl alcohol triazole 0.4-0.6, ammonium persulfate 1-2, maleic anhydride 2-3, 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 sodium bicarbonate 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.