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Preparation method of mineral insulated cable porcelain column

A technology of insulated cable porcelain pillars and minerals, applied in the field of preparation of mineral insulated cable porcelain pillars, can solve the problems of high density, troublesome use, and energy consumption of porcelain pillars, achieve weight reduction, convenient use, and improve utilization efficiency Effect

Active Publication Date: 2014-07-16
SHANGHAI TONNOR MATERIAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are two disadvantages in the above-mentioned adhesive: (1) when the adhesive is used, it needs to be melted in a hot water bath before use, which is troublesome to use and consumes energy; After calcination at 1250°C for 7 hours, the moisture in the binder can be completely volatilized, which consumes a lot of energy
Porcelain pillars prepared in the prior art have higher density and higher weight

Method used

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preparation example Construction

[0031] The invention provides a preparation method of mineral insulated cable porcelain column, comprising the following steps:

[0032] Step 1, preparing a binder and magnesium oxide for mineral insulated cable porcelain columns, wherein the binder is prepared by the following method: step (1) using sodium hydroxide to alkalize the cellulose with a polymerization degree of 600-800 0.5~1h, the consumption of sodium hydroxide is 0.5~0.6 times of the quality of cellulose, alkalization temperature is less than or equal to 50 ℃, step (2) adopts propylene oxide and ethyl chloride to the reaction that the step (1) obtains The product is subjected to etherification treatment for 0.5~1h, wherein, the consumption of propylene oxide is 0.1~0.2 times of the quality of cellulose respectively, the consumption of ethyl chloride is 0.8~1.2 times of the quality of cellulose, step (3) is to the quality of cellulose The reaction product that described step (2) obtains carries out follow-up trea...

Embodiment 1

[0056] Step 1, the preparation process of the binder is as follows:

[0057] Step (1) Use sodium hydroxide to alkalize the cellulose with a degree of polymerization of 600 to 800 for 0.5h, the amount of sodium hydroxide is 0.5 times the mass of the cellulose, the alkalization temperature is 40°C, and the alkalization treatment is at Under nitrogen environment, the pressure is always at 0.04MPa;

[0058] Step (2) adopts propylene oxide and ethyl chloride to carry out etherification treatment to the reaction product obtained in the step (1) for 0.5h, wherein, the consumption of propylene oxide is 0.1 times of the quality of cellulose respectively, and ethyl chloride The consumption of cellulose is 0.8 times of the quality of cellulose, and the pressure of the reaction environment of etherification treatment keeps 0.14MPa;

[0059] Step (3) carries out follow-up processing to the reaction product that described step (2) obtains:

[0060] Step (a), separating the liquid in the r...

Embodiment 2

[0075] Step 1, the preparation process of the binder is as follows:

[0076] Step (1) Use sodium hydroxide to alkalize the cellulose with a degree of polymerization of 600 to 800 for 1 hour, the amount of sodium hydroxide is 0.6 times the mass of the cellulose, the alkalization temperature is 50°C, and the alkalization is carried out in a nitrogen environment Under the pressure of 0.05MPa;

[0077] Step (2) adopts propylene oxide and chloroethane to carry out etherification treatment 1h to the reaction product that described step (1) obtains, and wherein, the consumption of propylene oxide is respectively 0.2 times of the mass of cellulose, and the amount of chloroethane The dosage is 1.2 times of the quality of cellulose, and the pressure of the reaction environment of etherification treatment is 0.15MPa;

[0078] Step (3) carries out follow-up processing to the reaction product that described step (2) obtains:

[0079] Step (a), separating the liquid in the reaction produc...

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Abstract

The invention discloses a preparation method of a mineral insulated cable porcelain column. According to the method, cellulose with 600-800 polymerization degree is used as a raw material and then subjected to alkalization and etherification under certain technological conditions to obtain an adhesion agent with 50-80mPa*s viscosity. The adhesion agent has appropriate viscosities so that the calcination temperature of the porcelain column can be reduced to 750 DEG C in the later period of porcelain column manufacturing, and energy consumption is greatly reduced; and the adhesion agent can be dissolved in water at normal temperatures, and energy consumption for dissolving the adhesion agent is saved. The preparation method is used for preparing magnesium oxide of the porcelain column, the energy consumption during magnesium oxide producing is reduced, and the production costs of the magnesium oxide is around 2 / 3 of those of electric smelting magnesium oxide. According to the magnesium oxide porcelain column prepared by the preparation method, the density of the final porcelain column is 2.0g / cm<3>, and the weight of the porcelain column can be reduced by 10%-15% without influencing the production rate of the porcelain column. According to the preparation method of the mineral insulated cable porcelain column, the technical problem during a production process of the mineral insulated cable porcelain column is solved, the energy consumption is greatly reduced, and the production costs of the mineral insulated cable porcelain column are reduced.

Description

technical field [0001] The invention relates to the technical field of mineral insulated cables, in particular to a method for preparing porcelain columns of mineral insulated cables. Background technique [0002] Mineral insulated cables, as fireproof cables, play a very important role in national economic construction. With the development of the economy, the mineral insulated cables are used more and more widely. At present, the main production materials of mineral insulated cables in my country have all been domestically produced, but due to the characteristics of the insulating material magnesium oxide filler, there are always shortcomings such as high energy consumption and low productivity in the cable manufacturing process, which makes it difficult to reduce the production cost of mineral insulated cables. . At the same time, under the background of energy saving and emission reduction, enterprises are paying more and more attention to reducing energy consumption, i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/622C04B35/636C04B35/04
Inventor 张楠崔永坤
Owner SHANGHAI TONNOR MATERIAL SCI
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