Preparation method of aluminum hydroxide coated talc powder special for flame retardant cable material

A technology of aluminum hydroxide and talcum powder, applied in chemical instruments and methods, fibrous fillers, inorganic pigment treatment, etc., can solve the problems of insufficient flame retardancy of cables, and achieve high temperature and high pressure, easy fire and strong compatibility Effect

Inactive Publication Date: 2016-10-12
JIANGXI GUANGYUAN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to propose a preparation method of aluminum hydroxide-coated talc powder for flame-retardant cable materials in order to solve the problem of insufficient flame retardancy of cables under high temperature and high pressure.

Method used

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  • Preparation method of aluminum hydroxide coated talc powder special for flame retardant cable material
  • Preparation method of aluminum hydroxide coated talc powder special for flame retardant cable material
  • Preparation method of aluminum hydroxide coated talc powder special for flame retardant cable material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The mass ratio of high-quality talcum powder and aluminum sulfate is 2:1 to make an aqueous solution with a solid content of 70%, and then add a polyacrylic acid sodium salt dispersant with a powder mass of 6‰ and a rare earth coupling agent of 3‰ [(C 3 h 7 O) x Re(OCOR′) m (OCOR 2 ) n (OAB) y 〕 compound dispersant, control the slurry temperature between 70-80°C for wet grinding and stirring, and finally prepare a 6000-mesh slurry, pump the stirred and reacted slurry into rapid flash drying, and decompose the powder 6000-mesh powder is obtained after polydispersing.

[0020] The powder is modified with a composite modifier, the modifier is 5‰ aluminate coupling agent, 3‰ stearic acid, 2‰ refined coconut oil and 2‰ alkylbenzene sulfonate Salt anionic surfactants. After modification, the high-speed stirred powder is packaged by an automatic packaging machine.

[0021] The electron micrograph of the aluminum hydroxide coated talcum powder that the present embodime...

Embodiment 2

[0023] The mass ratio of high-quality talcum powder and aluminum sulfate is 3:1 to make an aqueous solution with a solid content of 73%, and then add a polyacrylic acid sodium salt dispersant with a powder mass of 7‰ and a rare earth coupling agent of 4‰ [(C 3 h 7 O) x Re(OCOR′) m (OCOR 2 ) n (OAB) y 〕 compound dispersant, control the slurry temperature between 70-80°C for wet grinding and stirring, and finally prepare a 6000-mesh slurry, pump the stirred and reacted slurry into rapid flash drying, and decompose the powder 6000-mesh powder is obtained after polydispersing.

[0024] The powder is modified with a composite modifier. The modifiers are 6‰ of aluminate coupling agent, 4‰ of stearic acid, 3‰ of refined coconut oil and 3‰ of alkylbenzenesulfonate. Salt anionic surfactants. After modification, the high-speed stirred powder is packaged by an automatic packaging machine.

[0025] The electron micrograph of the aluminum hydroxide coated talcum powder that the pr...

Embodiment 3

[0027] The mass ratio of high-quality talcum powder and aluminum sulfate is 5:1 to make an aqueous solution with a solid content of 75%, and then add a polyacrylic acid sodium salt dispersant with a powder quality of 8‰ and a rare earth coupling agent of 5‰ [(C 3 h 7 O) x Re(OCOR′) m (OCOR 2 ) n (OAB) y 〕 compound dispersant, control the slurry temperature between 70-80°C for wet grinding and stirring, and finally prepare a 6000-mesh slurry, pump the stirred and reacted slurry into rapid flash drying, and decompose the powder 6000-mesh powder is obtained after polydispersing.

[0028] The powder is modified with a compound modifier, the modifier is an aluminate coupling agent of 7‰, stearic acid of 5‰, refined coconut oil of 5‰ and alkylbenzene sulfonate of 5‰ Salt anionic surfactants. After modification, the high-speed stirred powder is packaged by an automatic packaging machine.

[0029] The electron micrograph of the aluminum hydroxide coated talcum powder that the...

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Abstract

A preparation method of aluminum hydroxide-coated talc powder specially used for flame-retardant cable materials. In this method, high-quality talc raw ore is crushed, aluminum sulfate is added with water, and a slurry with a solid content of 70-75% is formulated according to a certain mass ratio, and the slurry is stirred After reaching a certain temperature during the process, add a dispersant and a certain quality of sodium hydroxide and stearic acid, and then wet-grind with constant temperature and high-speed stirring to obtain a 6000-mesh composite slurry, which is depolymerized and dispersed, and compound modified The powder is modified by the agent, and the aluminum hydroxide-coated talc powder for flame-retardant cable materials is finally obtained. The invention can grind the powder particles to 6000 mesh through the wet grinding ultrafine powder processing technology, and the BET specific surface area is greater than or equal to 10 m 2 /g. At the same time, the process of deaggregation and dispersing is adopted to effectively disperse the powder and maintain the particle size of the original particles. The invention adopts a composite modification process to modify the powder, and the activation degree of the product is greater than 97%. The invention coats the aluminum hydroxide on the surface of the talcum powder, which solves the problem that the cable is easy to catch fire when subjected to high temperature and high pressure.

Description

technical field [0001] The invention relates to a preparation method of aluminum hydroxide-coated talc powder specially used for flame-retardant cable materials, and belongs to the technical field of fine chemicals. Background technique [0002] Talc powder is a magnesium silicate mineral. With its unique dry slipperiness, low hardness and high melting point, it has good electrical and thermal insulation, stable chemical properties, and anti-acid and alkali corrosion. In addition, because talc powder has a special layered and flaky structure, filling it in plastic products can significantly improve the product's rigidity, impact strength, creep resistance, hardness, surface scratch resistance, heat resistance, and heat resistance. Therefore, it is widely used in papermaking, cable, rubber, paint, ceramics and other fields. [0003] With the rapid development of the national economy, my country's urbanization and industrialization are also developing simultaneously at a high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/28C09C3/06C09C3/10C09C3/08
CPCC09C1/28C09C3/006C09C3/06C09C3/08C09C3/10
Inventor 邹检生宋建强彭鹤松李永安宋世坤
Owner JIANGXI GUANGYUAN CHEM
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