CN103410043A - Preparation method of breakdown-resistant cooked powder mica paper - Google Patents

Abstract

The invention provides a preparation method of breakdown-resistant cooked powder mica paper. The mica paper is prepared from the following raw materials in parts by weight: 130-140 parts of mica, 5-6 parts of white latex, 1-2 parts of potassium tetraborate, 3-4 parts of pentaerythritol, 2-3 parts of sodium hexametaphosphate, 1.2-1.3 parts of triethanolamine, 3-4 parts of glycerin, 1-2 parts of sodium persulfate, 3-4 parts of N-(beta-aminoethyl)-gamma-aminopropyltrimethoxysilane and a defined amount of water.

Description

The anti-manufacture method that punctures ripe mica paper

Technical field

The present invention relates to the mica paper production technical field, particularly a kind of anti-manufacture method that punctures ripe mica paper.

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 purpose of this invention is to provide a kind of anti-manufacture method that punctures ripe mica paper.

Technical scheme of the present invention is as follows:

A kind of anti-manufacture method that punctures ripe mica paper, it is characterized in that: the raw material by following weight portion is made: mica 130-140, white glue with vinyl 5-6, dipotassium tetraborate 1-2, pentaerythrite 3-4, calgon 2-3, triethanolamine 1.2-1.3, glycerine 3-4, sodium peroxydisulfate 1-2, N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane 3-4, 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 redispersable latex powder 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.

Resistance to sparking of the present invention can be good,, dielectric properties consistent to the uniformity are good in length and breadth, TENSILE STRENGTH is higher, permeability and air permeability good, high temperature resistant, 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.

The specific embodiment

A kind of anti-manufacture method that punctures ripe mica paper, by the raw material of following weight portion (kilogram), made: mica 130, white glue with vinyl 6, dipotassium tetraborate 2, pentaerythrite 3, calgon 2, triethanolamine 1.3, glycerine 3, sodium peroxydisulfate 2, N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane 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 redispersable latex 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 moisture 0.2 ~ 0.5% and is got product in drying cylinder.

The mica paper that the present invention makes, thickness 250-500um, TENSILE STRENGTH is 2KN/m, breakdown voltage 42KV/mm.Dielectric strength >=25Kv/mm.

Claims (1)

1. anti-manufacture method that punctures ripe mica paper, it is characterized in that: the raw material by following weight portion is made: mica 130-140, white glue with vinyl 5-6, dipotassium tetraborate 1-2, pentaerythrite 3-4, calgon 2-3, triethanolamine 1.2-1.3, glycerine 3-4, sodium peroxydisulfate 1-2, N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane 3-4, 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 redispersable latex 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 moisture 0.2 ~ 0.5% and is got product in drying cylinder.