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Electric porcelain insulator and preparation method thereof

An insulator and electric porcelain technology, applied in the field of electric porcelain insulators and their preparation, can solve the problems of electrical performance decline, affecting product quality stability, shortening service life, etc. good performance

Active Publication Date: 2018-06-01
萍乡强盛电瓷制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, organic polymer materials have obvious disadvantages, such as poor temperature resistance and aging resistance.
The maximum operating temperature of general organic insulating materials does not exceed 300°C, and its service life is greatly reduced when the temperature is high
As the ambient temperature rises, the aging speed of organic polymer materials is accelerated, the service life is shortened, and problems such as cracking, mechanical and electrical performance degradation occur, which seriously affect the quality and stability of products, and cannot fully meet the needs of new high-speed power.

Method used

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  • Electric porcelain insulator and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The electric porcelain insulator and the preparation method thereof provided in this embodiment, the preparation method of the electric porcelain insulator is carried out according to the following steps:

[0030] Wet mixing: get the ceramic powder (the ceramic powder is Mg-Ca-Si ternary ceramic powder, and the mass ratio of each oxide in the Mg-Ca-Si ternary ceramic powder measured is respectively MgO 20%, CaO 40%, SiO 2 40%) 40 parts, described mullite powder (comprising the component Al of following mass percent 2 o 3 68%, SiO 2 26.2%, the balance is 20 parts of oxides of Fe, Ti, Ca, Mg, K, Na), 3 parts of the mineralizer (limestone powder) and 2 parts of the rare earth dopant (yttrium trioxide) Place in a mixer for mixing, and the mixing time is 0.5h to obtain a mixed material, and the mass density of the mullite powder is 2.82g / cm 3 .

[0031] Drying: The mixed material is dried by spraying, and the instrument used is a YPG pressure spray dryer to obtain a d...

Embodiment 2

[0039] The electric porcelain insulator and the preparation method thereof provided in this embodiment, the preparation method of the electric porcelain insulator is carried out according to the following steps:

[0040] Wet mixing: get the ceramic powder (the ceramic powder is Mg-Ca-Si ternary ceramic powder, and the mass ratio of each oxide in the Mg-Ca-Si ternary ceramic powder is respectively MgO 25%, CaO 30% %, SiO 2 45%) 50 parts, described mullite powder (comprising the component Al of following mass percent 2 o 3 70.5%, SiO 2 23.2%, the balance being oxides of Fe, Ti, Ca, Mg, K, Na) 25 parts, the mineralizer (talc powder and limestone powder mixture, mass ratio 1:2) 5 parts and the rare earth doped Miscellaneous agent (dilanthanum trioxide and diyttrium trioxide mixture, mass ratio is 1:1) 4 parts are placed in the mixer and mixed, and the mixing time is 45min, and the mixed material is obtained, and the mass of the mullite powder The density is 2.85g / cm 3 .

[...

Embodiment 3

[0049] The electric porcelain insulator and the preparation method thereof provided in this embodiment, the preparation method of the electric porcelain insulator is carried out according to the following steps:

[0050] Wet mixing: get the ceramic powder (the ceramic powder is Mg-Ca-Si ternary ceramic powder, and the mass ratio of each oxide in the Mg-Ca-Si ternary ceramic powder is respectively MgO 30%, CaO 40% %, SiO 2 50%) 60 parts, described mullite powder (comprising the component Al of following mass percent 2 o 3 75%, SiO 2 22.0%, the balance being the oxides of Fe, Ti, Ca, Mg, K, Na) 30 parts, the mineralizer (comprising limestone powder, talcum powder and titanium dioxide, mass ratio is 2:1:0.5) 8 12 parts and 12 parts of the rare earth dopant (including diyttrium trioxide, lanthanum trioxide and samarium trioxide, with a mass ratio of 1:2:1) are placed in a mixer and mixed to obtain a mixed material , the mass density of the mullite powder is 3.24g / cm 3 ;. ...

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Abstract

The invention discloses an electric porcelain insulator and a preparation method thereof, and belongs to the field of electric porcelain insulators. The electric porcelain insulator mainly comprises the following raw materials in parts by weight: 40-60 parts of a ceramic powder, 20-30 parts of a mullite powder, 3-8 parts of a mineralizer, 8-15 parts of a dispersing agent, 0.5-1 part of a forming agent and 2-12 parts of a rare earth doping agent, wherein the mass density of the mullite powder is 2.82-3.24g / cm<3>. The preparation method of the electric porcelain insulator comprises the followingsteps: wet mixing, drying, pre-sintering, smashing, pressing, sintering, glazing and glaze firing. The electric porcelain insulator and the preparation method thereof, disclosed by the invention, have the advantages that cracking is prevented, the mechanical property is high, the stability is high, the yield is high.

Description

technical field [0001] The invention relates to the field of electric porcelain insulators, and more specifically, relates to an electric porcelain insulator and a preparation method thereof. Background technique [0002] Insulators are important components of power systems. In the existing motor-driven electric locomotives, insulators made of organic polymer composite materials such as rubber and resin are commonly used. Compared with traditional ceramic insulators, this insulator has the advantages of relatively simple manufacturing process, easy molding, and high product quality and reliability. . However, the organic polymer material itself has obvious disadvantages, such as poor temperature resistance and aging resistance. The maximum operating temperature of general organic insulating materials does not exceed 300°C, and its service life is greatly reduced when the temperature is high. As the ambient temperature rises, the aging speed of organic polymer materials is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/22C04B35/63C04B33/26
CPCC04B33/26C04B35/22C04B35/6316C04B2235/3206C04B2235/3208C04B2235/3224C04B2235/3225C04B2235/3227C04B2235/3232C04B2235/3463C04B2235/349C04B2235/6562
Inventor 谢锡群谢涛彭清发
Owner 萍乡强盛电瓷制造有限公司
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