阅读说明：本技术 一种电瓷绝缘子及其制备方法 (Electric porcelain insulator and preparation method thereof ) 是由 李雪玲 于 2019-11-28 设计创作，主要内容包括：本发明公开了电瓷绝缘子及其制备方法,涉及电瓷技术领域,所述绝缘子由如下质量份数的原料制成：陶瓷粉30～50份、莫来石粉20～30份、钛白粉3～8份、高岭石5～10份,硅石粉6～12份、三氧化二镧1～2份、石英1～3份、成型剂0.5～1份；制备方法包括：S1、湿混；S2、干燥；S3、预烧；S4、球磨；S5、湿碾；S6、烧成、上釉；S7、干燥；S8、研磨胶装、包装。本发明的有益效果是通过合理选用粘土及材料,使材料的烧成性能、工艺性能得到改进,配方合理；产品机械强度高,提高了产品合格率。(The invention discloses an electric porcelain insulator and a preparation method thereof, and relates to the technical field of electric porcelain, wherein the insulator is prepared from the following raw materials in parts by mass: 30-50 parts of ceramic powder, 20-30 parts of mullite powder, 3-8 parts of titanium dioxide, 5-10 parts of kaolinite, 6-12 parts of silica powder, 1-2 parts of lanthanum oxide, 1-3 parts of quartz and 0.5-1 part of a forming agent; the preparation method comprises the following steps: s1, wet mixing; s2, drying; s3, pre-burning; s4, ball milling; s5, wet grinding; s6, firing and glazing; s7, drying; and S8, grinding, cementing and packaging. The invention has the advantages that the firing performance and the process performance of the material are improved by reasonably selecting the clay and the material, and the formula is reasonable; the product has high mechanical strength and the product percent of pass is improved.)

1. An electric porcelain insulator is characterized in that: the insulator is prepared from the following raw materials in parts by weight: 30-50 parts of ceramic powder, 20-30 parts of mullite powder, 3-8 parts of titanium dioxide, 5-10 parts of kaolinite, 6-12 parts of silica powder, 1-2 parts of lanthanum oxide, 1-3 parts of quartz and 0.5-1 part of forming agent.

2. The electric porcelain insulator according to claim 1, characterized in that: the insulator is prepared from the following raw materials in parts by weight: 35-45 parts of ceramic powder, 22-28 parts of mullite powder, 4-6 parts of titanium dioxide, 6-9 parts of kaolinite, 8-10 parts of silica powder, 1-2 parts of lanthanum oxide, 1-2 parts of quartz and 0.7-0.9 part of forming agent.

3. The method for preparing an electric porcelain insulator according to any one of claims 1 to 2, characterized in that: the method comprises the following steps:

s1, wet mixing: putting the raw materials into a mixing machine for mixing uniformly to obtain a mixed material;

s2, drying: drying the uniformly mixed material by using a spray method to obtain a dried material;

s3, pre-burning: transferring the dried material to a porcelain oven for pre-sintering at the temperature of 1110-1150 ℃ to obtain a pre-sintered material;

s4, ball milling: adding the pre-sintered material into a ball mill for ball milling for 1-5 hours;

s5, wet grinding;

s6, firing and glazing;

s7, drying;

and S8, grinding, cementing and packaging.

Technical Field

The invention relates to the technical field of electric porcelain, in particular to an electric porcelain insulator and a preparation method thereof.

Background

In the prior art, an insulator is a special insulating control and can play an important role in an overhead transmission line. It has been developed that one end of the high voltage wire connection tower is hung with a plurality of disc-shaped insulators, which are usually made of ceramics to increase the creepage distance. The insulator should not fail due to various electromechanical stresses caused by changes in environmental and electrical loading conditions, otherwise the insulator will not function significantly and will compromise the service and operational life of the entire line. Porcelain insulators play two basic roles in overhead transmission lines, namely supporting the conductor and preventing current from flowing back to ground. The porcelain insulator consists of an insulating porcelain body and metal accessories, wherein the surface of the insulating porcelain body is provided with a plurality of round umbrella skirts which are spaced and protruded. The raw materials of the insulating porcelain body are different in selection, the mechanical property and the electrical property are different, and the reasonable selection of the raw materials is an important guarantee for ensuring the product performance and the use safety. The products have various types and different formulas, and the quality of the products is guaranteed only when the products reach the standard.

Insulators are important parts of power systems. The insulator is made of organic polymer composite materials such as rubber and resin and the like, and has the advantages of relatively simple manufacturing process, relatively easy molding, high product quality reliability and the like compared with the traditional ceramic insulator. However, the organic polymer material itself has obvious disadvantages, such as poor temperature resistance and aging resistance. Typical organic insulating materials have a maximum service temperature of no more than 300 c and their service life is greatly compromised at higher temperatures. Along with the rise of the environmental temperature, the aging speed of the organic polymer material is accelerated, the service life is shortened, the problems of cracking, reduction of mechanical and electrical properties and the like are caused, the quality stability of the product is seriously influenced, and the requirement of novel high-speed power cannot be completely met.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects of the prior art: an electric porcelain insulator with good mechanical property and good quality stability and a manufacturing method thereof.

The technical solution of the invention is as follows:

the electric porcelain insulator is prepared from the following raw materials in parts by mass: 30-50 parts of ceramic powder, 20-30 parts of mullite powder, 3-8 parts of titanium dioxide, 5-10 parts of kaolinite, 6-12 parts of silica powder, 1-2 parts of lanthanum oxide, 1-3 parts of quartz and 0.5-1 part of forming agent.

Preferably, the insulator is prepared from the following raw materials in parts by mass: 35-45 parts of ceramic powder, 22-28 parts of mullite powder, 4-6 parts of titanium dioxide, 6-9 parts of kaolinite, 8-10 parts of silica powder, 1-2 parts of lanthanum oxide, 1-2 parts of quartz and 0.7-0.9 part of forming agent.

A preparation method of an electric porcelain insulator comprises the following steps:

s1, wet mixing: putting the raw materials into a mixing machine for mixing uniformly to obtain a mixed material;

s2, drying: drying the uniformly mixed material by using a spray method to obtain a dried material;

s3, pre-burning: transferring the dried material to a porcelain oven for pre-sintering at the temperature of 1110-1150 ℃ to obtain a pre-sintered material;

s4, ball milling: adding the pre-sintered material into a ball mill for ball milling for 1-5 hours;

s5, wet grinding;

s6, firing and glazing;

s7, drying;

s8, grinding, cementing and packaging;

the invention has the beneficial effects that:

the invention has the advantages that: 1. the firing performance and the technological performance of the material are improved by reasonably selecting the clay and the material, and the formula is reasonable. 2. The product has high mechanical strength and the product percent of pass is improved. 3. The electrical performance index and the mechanical performance index meet the use requirement.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

The present invention is further illustrated by the following examples, which are not to be construed as limiting the invention.