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Preparation method for modified magnesium-aluminium hydrotalcite cable fillers

A magnesium-aluminum hydrotalcite and cable filling technology, which is applied in the direction of plastic/resin/wax insulators, organic insulators, etc., can solve the problems of failing to meet market requirements, poor corrosion resistance, poor high temperature resistance, etc., achieve compact structure, and improve high temperature resistance performance, and the effect of improving corrosion resistance

Inactive Publication Date: 2018-07-24
谢新昇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention: Aiming at the defects of poor high temperature resistance, poor corrosion resistance and poor flame retardancy in the current common cable fillers, which cannot meet the market requirements, a preparation method of modified magnesium aluminum hydrotalcite cable fillers is provided

Method used

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Examples

Experimental program
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Effect test

example 1

[0021]Mix absolute ethanol, ammonia water with a mass fraction of 21% and deionized water in a volume ratio of 4:1:2 and put them into a beaker, stir at a temperature of 32°C for 16 minutes to obtain a mixed solution, and then add the mixed solution to the beaker Ethyl tetrasilicate with a liquid volume of 5% and anhydrous ethanol with a mixed liquid volume of 0.4% were mixed and stirred at a temperature of 52°C for 1 hour to obtain a reaction liquid, and the reaction liquid was taken out, and the reaction liquid, bismaleimide Resin and polyethylene were mixed in a beaker at a mass ratio of 2:1:5, stirred and reacted at a temperature of 86°C for 45 minutes, cooled and discharged to obtain modified polyethylene; weigh 12g of sodium hydroxide and 8g of anhydrous carbonic acid Mix sodium into a beaker with 60mL deionized water and stir for 6 minutes to obtain a mixed alkali solution, then mix magnesium chloride hexahydrate, aluminum trichloride hexahydrate and deionized water at a...

example 2

[0023] According to the volume ratio of 4:1:2, mix absolute ethanol, ammonia water with a mass fraction of 21%, and deionized water into a beaker, stir at a temperature of 40°C for 18 minutes to obtain a mixed solution, and then add the mixed solution to the beaker Tetraethyl silicate with a liquid volume of 5% and anhydrous ethanol with a mixed liquid volume of 0.4% were mixed and stirred at a temperature of 60°C for 2 hours to obtain a reaction liquid, and the reaction liquid was taken out, and the reaction liquid, bismaleimide Resin and polyethylene were mixed in a beaker at a mass ratio of 2:1:5, stirred and reacted at 88°C for 55 minutes, cooled and discharged to obtain modified polyethylene; weigh 14g of sodium hydroxide and 9g of anhydrous carbonic acid Mix sodium into a beaker with 70mL deionized water and stir for 7 minutes to obtain a mixed alkali solution, then mix magnesium chloride hexahydrate, aluminum trichloride hexahydrate and deionized water at a mass ratio of...

example 3

[0025] Mix absolute ethanol, ammonia water with a mass fraction of 21%, and deionized water at a volume ratio of 4:1:2 into a beaker, stir at 48°C for 20 minutes to obtain a mixed solution, and then add the mixed solution to the beaker Tetraethyl silicate with a liquid volume of 5% and anhydrous ethanol with a mixed liquid volume of 0.4% were mixed and stirred at a temperature of 68°C for 3 hours to obtain a reaction liquid, and the reaction liquid was taken out, and the reaction liquid, bismaleimide Resin and polyethylene were mixed in a beaker at a mass ratio of 2:1:5, stirred and reacted at 90°C for 60 minutes, cooled and discharged to obtain modified polyethylene; weigh 16g of sodium hydroxide and 10g of anhydrous carbonic acid Mix sodium into a beaker with 75mL deionized water and stir for 9 minutes to obtain a mixed alkali solution, then mix magnesium chloride hexahydrate, aluminum trichloride hexahydrate and deionized water at a mass ratio of 3:1:5 and stir for 16 minute...

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Abstract

The invention discloses a preparation method for modified magnesium-aluminium hydrotalcite cable fillers and belongs to the technical field of preparation of cable fillers. The preparation method disclosed by the invention has the beneficial effects that firstly a tetraethoxysilane hydrolysis method is utilized for preparing silica sol, and since the silica sol contains silicon dioxide, oxygen inthe air can be effectively isolated from a base material to prevent contact; in addition, bismaleimide resin has heat resistance, and is easily cured on the polyethylene surface to form a triazine-ring structure, so that the compatibility of self-made magnesium-aluminium hydrotalcite with the base material is improved; meanwhile, the self-made magnesium-aluminium hydrotalcite particles are uniformly dispersed on the surface of the base material, so that the surface temperature of the base material is reduced and the flame-retardant effect is achieved; furthermore, in the heat-absorbing and decomposing process of the self-made magnesium-aluminium hydrotalcite, an alkali porous composite oxide is obtained, and can be combined with a carbonized product on the surface of the base material to form a protective film, so that the invasion of heat and oxygen can be effectively prevented, the flame retardance of the cable fillers can be further improved and the application prospect is wide.

Description

technical field [0001] The invention discloses a preparation method of a modified magnesium aluminum hydrotalcite cable filler, which belongs to the technical field of cable filler preparation. Background technique [0002] The wire and cable industry is the second largest industry in China after the automobile industry, and the product variety satisfaction rate and domestic market share both exceed 90%. Worldwide, China's wire and cable output has surpassed that of the United States, becoming the world's largest producer of wire and cable. With the rapid development of China's wire and cable industry, the number of new enterprises has been increasing, and the overall technical level of the industry has been greatly improved. The continuous and rapid growth of China's economy has provided a huge market space for cable products. The strong temptation of the Chinese market has made the world focus on the Chinese market. In just a few decades of reform and opening up, China's ...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L79/08C08K13/06C08K9/02C08K3/26C08K5/41C08K3/36H01B3/44
CPCC08L23/06C08L2201/02C08L2201/08C08L2203/202H01B3/441C08L79/085C08K13/06C08K9/02C08K3/26C08K5/41C08K3/36
Inventor 谢新昇杨明忠陈可
Owner 谢新昇
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