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Method for preparing enameled refractory appliance switch material

An electrical switch and fire-resistant technology, which is applied in the field of switch material preparation, can solve problems such as unsatisfactory insulation performance and fire resistance, and poor quality of switch materials, and achieve the effects of easy control of operating conditions, extended service life, and simple operation process

Inactive Publication Date: 2016-11-16
陈毅忠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main technical problem to be solved by the present invention is to provide a method for preparing a vitrified refractory electrical switch material in view of the poor quality of current switch materials and the defects of unsatisfactory insulation performance and fire resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0017] First, measure 100mL of ethanol solution with a mass fraction of 95% and add it to the beaker, and adjust the pH of the ethanol solution to 3.0 with glacial acetic acid, add 2g of silane coupling agent KH-570, stir at 300r / min for 20min, add 100g of kaolin to the beaker, 1.5 g sodium hexametaphosphate, and continue to stir for 30 minutes to obtain a mixed solution, transfer the mixed solution to a ball mill jar, add 800g zirconia beads, place it in a ball mill and mill it for 2 hours, then add it to a 105°C drying oven and dry to constant weight. 20g hydrotalcite, add 180mL deionized water, stir and mix at 300r / min for 15min, add 5g sodium dodecylbenzene sulfonate, 5g Tween-80, continue stirring in 80℃ oil bath After 30 minutes, the mixed slurry was obtained, and the mixed slurry was suction-filtered, and the filter cake was washed with deionized water for 3 times, then transferred to a 105°C drying oven and dried to constant weight to obtain modified hydrotalcite; respe...

example 2

[0020] First, measure 110mL of ethanol solution with a mass fraction of 95% and add it to the beaker, and adjust the pH of the ethanol solution to 3.5 with glacial acetic acid, add 2.2g of silane coupling agent KH-570, stir at 350r / min for 25min, add 150g of kaolin to the beaker, 1.55g of sodium hexametaphosphate, continue to stir for 35 minutes to obtain a mixed solution, transfer the mixed solution into a ball mill tank, add 850g of zirconia beads, put it in a ball mill and mill for 2.5 hours, then add it to a 107°C drying oven to dry to constant weight, Modified kaolin was obtained and set aside; 23g of hydrotalcite was weighed, added to 200mL of deionized water, stirred and mixed at 350r / min for 17min, 5.5g of sodium dodecylbenzenesulfonate and 5.5g of Tween-80 were added, and oil Continue to stir in the bath for 35 minutes to obtain a mixed slurry. Suction filter the mixed slurry, wash the filter cake with deionized water for 4 times, and transfer it to a 107°C drying oven...

example 3

[0023] First, measure 120mL of ethanol solution with a mass fraction of 95% and add it to the beaker, and adjust the pH of the ethanol solution to 4.0 with glacial acetic acid, add 2.4g of silane coupling agent KH-570, stir at 400r / min for 30min, add 120g of kaolin to the beaker, 1.6g of sodium hexametaphosphate, continue stirring for 40min to obtain a mixed solution, transfer the mixed solution into a ball mill jar, add 900g of zirconia beads, place in a ball mill and mill for 3 hours, then add it to a 110°C drying oven and dry to constant weight to obtain Modified kaolin, set aside; weigh 25g of hydrotalcite, add 225mL of deionized water, stir and mix at 400r / min for 20min, add 6g of sodium dodecylbenzenesulfonate, 6g of Tween-80, and continue to Stir for 40 minutes to obtain a mixed slurry, filter the mixed slurry with suction, wash the filter cake with deionized water for 5 times, transfer it to a 110°C drying oven and dry to constant weight to obtain a modified hydrotalcit...

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Abstract

The invention discloses a method for preparing an enameled refractory appliance switch material, and belongs to the field of switch material preparation. The method for preparing the enameled refractory appliance switch material is provided to overcome the defects of poor quality, non-ideal insulation performance and non-ideal refractory performance of an exiting switch material. The method comprises the following steps: uniformly mixing a silane coupler, kaolin and other materials, performing ball milling and drying to prepare modified kaolin; modifying hydrotalcite with a surfactant, washing, drying, and performing ball-milling with the modified kaolin and glass powder in a ball-milling tank to prepare powder; and finally melting and granulating with polystyrene to prepare the enameled refractory appliance switch material. According to the method, kaolin contains massive alumina ingredient and can partially react with oxygen in the air to generate a compact alumina film which covers the surface of a material exposed in the air, and alumina has high mechanical strength, large hardness, high temperature resistance and excellent insulation performance. The enameled refractory appliance switch material has a wide application prospect.

Description

technical field [0001] The invention discloses a preparation method of a switch material for a porcelain refractory electrical appliance, which belongs to the field of switch material preparation. Background technique [0002] In recent years, frequent fires have caused heavy losses to people's lives and property. In the process of fire, it is of great significance to ensure the smooth flow and shutdown of elevators, lighting systems, communication systems, signal control systems and other equipment within a certain period of time to reduce casualties and loss of life and property. When a fire occurs, switch materials need to withstand high temperatures of 300°C to 1000°C for a long time. It is difficult for ordinary switch materials to guarantee their normal use under such conditions. Fire-resistant switch materials are widely used in important departments and public places such as high-rise buildings, subways, power plants, and nuclear power plants. The normal operation ...

Claims

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Application Information

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IPC IPC(8): C08L25/06C08K13/06C08K9/04C08K3/26C08K9/06C08K3/34C08K3/40
CPCC08K13/06C08K3/26C08K3/346C08K3/40C08K9/04C08K9/06C08K2003/265C08L2201/08C08L2203/20C08L25/06
Inventor 陈毅忠王龙陆娜
Owner 陈毅忠