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Method for preparation of machinable mica glass ceramic insulating material from waste glass and phlogopite

A mica glass and ceramic insulation technology, applied in the field of engineering ceramic materials, can solve the problems of high cost, high energy consumption, high cost of mica glass ceramics, etc., and achieve the effects of low cost, good electrical insulation performance and high strength

Active Publication Date: 2014-12-31
CHINA UNIV OF GEOSCIENCES (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The melting method needs to heat the glass raw material to a high temperature to melt, and the energy consumption is high, resulting in high cost
In addition, the raw materials for preparing glass powder are mainly chemical raw materials, which also leads to the high cost of mica glass ceramics
This has seriously restricted the marketing and wide application of mica ceramic insulators

Method used

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  • Method for preparation of machinable mica glass ceramic insulating material from waste glass and phlogopite
  • Method for preparation of machinable mica glass ceramic insulating material from waste glass and phlogopite
  • Method for preparation of machinable mica glass ceramic insulating material from waste glass and phlogopite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] First, the waste glass is repeatedly cleaned, dried naturally at room temperature, then crushed, pulverized, sieved with 100 mesh, and then used; the phlogopite is crushed, crushed, and sieved with 100 mesh, and the obtained mica powder is used. The glass powder and the mica powder are mixed and ground according to the mass ratio (the mica accounts for 65%) to obtain the mixed powder. Add 4-5wt% polyvinyl alcohol as a binder to the mixture of glass powder and mica powder, grind again, then weigh about 3.5g of ingredient powder, put it into a mold, and place it on a powder tablet press for dry pressing. The pressure used is 20MPa, and the holding time is about 40s. Cold isostatic pressing is performed immediately after dry pressing. Before isostatic pressing, carefully put the strips of samples into rubber gloves, vacuumize the rubber gloves and tie them tightly, then place them in a cold isostatic press, pressurize to 120MPa at a certain speed, Keep the pressure for 9...

Embodiment 2

[0023] First, the waste glass is repeatedly cleaned, dried naturally at room temperature, then crushed, pulverized, sieved with 100 mesh, and then used; the phlogopite is crushed, crushed, and sieved with 100 mesh, and the obtained mica powder is used. The glass powder and the mica powder are mixed and ground according to the mass ratio (the mica accounts for 65%) to obtain the mixed powder. Add 4-5wt% polyvinyl alcohol as a binder to the mixture of glass powder and mica powder, grind again, then weigh about 3.5g of ingredient powder, put it into a mold, and place it on a powder tablet press for dry pressing. The pressure used is 20MPa, and the holding time is about 40s. Cold isostatic pressing is performed immediately after dry pressing. Before isostatic pressing, carefully put the strips of samples into rubber gloves, vacuumize the rubber gloves and tie them tightly, then place them in a cold isostatic press, pressurize to 120MPa at a certain speed, Keep the pressure for 9...

Embodiment 3

[0026] First, the waste glass is repeatedly cleaned, dried naturally at room temperature, then crushed, pulverized, sieved with 100 mesh, and then used; the phlogopite is crushed, crushed, and sieved with 100 mesh, and the obtained mica powder is used. The glass powder and the mica powder are mixed and ground according to the mass ratio (the mica accounts for 70%) to obtain the mixed powder. Add 4-5wt% polyvinyl alcohol as a binder to the mixture of glass powder and mica powder, grind again, then weigh about 3.5g of ingredient powder, put it into a mold, and place it on a powder tablet press for dry pressing. The pressure used is 20MPa, and the holding time is about 40s. Cold isostatic pressing is performed immediately after dry pressing. Before isostatic pressing, carefully put the strips of samples into rubber gloves, vacuumize the rubber gloves and tie them tightly, then place them in a cold isostatic press, pressurize to 120MPa at a certain speed, Keep the pressure for 9...

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Abstract

The invention relates to a method for preparation of machinable mica glass ceramic insulating material from waste glass and phlogopite. The method specifically includes the steps of: washing the waste glass and phlogopite repeatedly, and conducting breaking, crushing and sieving for standby use; mixing the above two powder according to a mass ratio (with the mica accounting for 50-75%), performing grinding, adding 4-5wt% of polyvinyl alcohol as a binder, carry out dry pressing and cold isostatic pressing molding, placing the molded sample into a muffle furnace to perform pressureless sintering at 800DEG C-1500DEG C, carrying out heat preservation for 2h, performing natural cooling to room temperature, and then taking the sample out, thus obtaining the machinable mica glass ceramic insulating material prepared from waste glass and phlogopite. The material has the advantages of low cost, high strength and good electrical insulation properties, etc.

Description

technical field [0001] The invention provides a machinable mica glass-ceramic insulating material prepared by utilizing waste glass and phlogopite and a preparation method thereof, belonging to the technical field of engineering ceramic materials. Background technique [0002] Mica ceramic insulator is an insulator with mica as the main insulating component. It has the characteristics of high temperature resistance, high mechanical strength, excellent electrical insulation performance, machinability, and stable chemical properties. It is a new type of insulator product with good potential for exploration. . Compared with traditional ceramic insulators and composite insulators, it has many advantages. It can be said that mica ceramic insulators combine the comprehensive advantages of synthetic insulators and ceramic insulators that are widely used at present, and fully meet the requirements of high-speed electric locomotives. [0003] Mica ceramic insulators have very good ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/00
Inventor 吴小文罗炳程曾诚郭金鑫
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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