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High-strength electric ceramic and preparation method thereof

A high-strength, electric-ceramic technology, applied in the field of power materials, can solve problems such as low strength, and achieve the effects of improving bending strength, simple preparation method, and increasing aspect ratio

Inactive Publication Date: 2018-01-09
DEYANG LIJIU YUNZHI KNOWLEDGE PROPERTY OPERATIONS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defect of low strength of the existing electric porcelain, and provide a high-strength electric porcelain and a preparation method thereof; the present invention uses cryolite for the preparation of electric porcelain, which can effectively improve the strength of electric porcelain, and at the same time, utilizes the electric field to Influenced by the growth of the stone phase, the electric porcelain green embryo is fired in an alternating electric field, which increases the aspect ratio of the mullite phase and improves the bending strength of the electric porcelain

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1. Weighing: Weigh raw materials according to 16 parts of kaolin, 42 parts of bauxite, 8 parts of feldspar powder, 7 parts of bentonite, 25 parts of basalt powder, 3 parts of cryolite powder and 6 parts of dolomite for later use;

[0036] 2. Mixing: Mix the weighed raw materials evenly to obtain the mixture;

[0037] 3. Ball milling: Add the mixed material and water into the ball mill according to the mass ratio = 1:1, and perform ball milling in the ball mill for 8 hours to obtain mud;

[0038] 4. Screening: pass the ball-milled mud through a 800-mesh sieve, and take the under-sieve to obtain mud;

[0039] 5. Iron removal: use a wet magnet separator to remove iron from the mud and remove magnetic impurities;

[0040] 6. Squeeze the mud: dehydrate the mud after iron removal by the ball, so that the water content of the mud is 18%;

[0041] 7. Stale: send the squeezed and dehydrated mud into the stale room for 4 days;

[0042] 8. Mud training: put the stale mud materi...

Embodiment 2

[0048] 1. Weighing: Weigh raw materials according to 10 parts of kaolin, 50 parts of bauxite, 10 parts of feldspar powder, 5 parts of bentonite, 20 parts of basalt powder, 5 parts of cryolite powder and 5 parts of dolomite for later use;

[0049] 2. Mixing: Mix the weighed raw materials evenly to obtain the mixture;

[0050] 3. Ball milling: Add the mixed material and water into the ball mill according to the mass ratio = 1:2, and perform ball milling in the ball mill for 10 hours to obtain mud;

[0051] 4. Screening: pass the ball-milled mud through a 400-mesh sieve, and take the under-sieve to obtain mud;

[0052] 5. Iron removal: use a wet magnet separator to remove iron from the mud and remove magnetic impurities;

[0053] 6. Squeeze the mud: dehydrate the mud after iron removal by the ball, so that the water content of the mud is 15%;

[0054] 7. Stale: send the squeezed and dehydrated mud into the stale room for 5 days;

[0055] 8. Mud training: put the stale mud mate...

Embodiment 3

[0061] 1. Weighing: Weigh raw materials according to 20 parts of kaolin, 30 parts of bauxite, 5 parts of feldspar powder, 10 parts of bentonite, 30 parts of basalt powder, 2 parts of cryolite powder and 8 parts of dolomite for later use;

[0062] 2. Mixing: Mix the weighed raw materials evenly to obtain the mixture;

[0063] 3. Ball milling: Add the mixed material and water into the ball mill according to the mass ratio = 1:1, and perform ball milling in the ball mill for 5 hours to obtain mud;

[0064] 4. Screening: pass the ball-milled mud through a 800-mesh sieve, and take the under-sieve to obtain mud;

[0065] 5. Iron removal: use a wet magnet separator to remove iron from the mud and remove magnetic impurities;

[0066] 6. Squeeze the mud: dehydrate the mud after iron removal by the ball, so that the water content of the mud is 20%;

[0067] 7. Stale: put the dehydrated mud into the stale room for 3 days;

[0068] 8. Mud training: put the stale mud material into the h...

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Abstract

The invention discloses high-strength electric ceramic and a preparation method of the electric ceramic. The electric ceramic is prepared from the following raw materials in parts by weight: 10-20 parts of kaoline, 30-50 parts of bauxite, 5-10 parts of feldspar powder, 5-10 parts of bentonite, 20-30 parts of basalt powder, 2-5 parts of cryolite powder and 5-8 parts of dolomite. According to the electric ceramic, cryolite is used for preparing the electric ceramic, so that the strength of the electric ceramic can be effectively improved; and an electric ceramic blank is fired in an alternatingcurrent electric field by utilizing an influence of the electric field on growth of a mullite phase, so that a length-diameter ratio of the mullite phase is increased, and the bending strength of theelectric ceramic is improved.

Description

technical field [0001] The invention relates to the field of electric power materials, in particular to the field of electric porcelain, in particular to a high-strength electric porcelain and a preparation method thereof. Background technique [0002] Electric porcelain is a component used in power systems that mainly supports and insulates, and sometimes also serves as a container for other electrical components. Therefore, there are higher requirements for its mechanical properties, electrical properties, and environmental resistance (hot and cold, anti-pollution, aging, etc.). It is usually classified according to the product shape, voltage level and application environment of electric porcelain. According to the product shape, it can be divided into: disc suspension insulator, pin insulator, rod insulator, hollow insulator, etc.; according to the voltage level, it can be divided into: low voltage (AC 1000V and below, DC 1500V and below) insulators and high voltage ( A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/26C04B33/13C04B33/34C03C8/14C04B41/86
Inventor 李红梅
Owner DEYANG LIJIU YUNZHI KNOWLEDGE PROPERTY OPERATIONS CO LTD