Preparation method for superfine active brucite composite modified material

A technology of composite modification and active water, which is applied in the field of preparation of ultra-fine active brucite composite modified materials, can solve the problems that modifiers cannot achieve satisfactory results, achieve good hydrophobicity, and improve the effect of flame retardancy

Active Publication Date: 2014-04-16
丹东亿龙高科技材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] When modifying the surface of the powder, the use of a single modifier often cannot achieve satisfactory results, and the modified brucite with high-efficiency flame retardancy can only be compound modified

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Coarse grinding by Raymond mill, fine grinding and classification by jet mill to obtain a powder with a particle size of about 5um, and then brucite powder, dispersion medium sodium hexametaphosphate, grinding medium zirconia and grinding aid polyacrylic acid Put the sodium into the ball mill, add water and stir to make a slurry, so that the grinding aid, dispersion medium, and brucite powder are completely mixed in a uniform system, and then grind through the ball mill. %-50% of the filter cake, then put it into a constant temperature drying box to remove excess water, and use a pulverizer to break it up and make a sample before modification. The particle size of the sample is about 1.0um for D50 and about 1.0um for D97 2.2um.

[0034]Put the prepared ultrafine powder into 2000 parts of suspension medium containing modifier (100 parts by weight of brucite), wherein the suspension medium contains 5 parts of fatty acid and fatty acid sodium mixture, 2 parts of Silane co...

Embodiment 2

[0037] Coarse grinding by Raymond mill, fine grinding and classification by jet mill to obtain a powder with a particle size of about 3um, and then brucite powder, dispersion medium sodium hexametaphosphate, grinding medium zirconia and grinding aid polyacrylic acid Put the sodium into the ball mill, add water and stir to make a slurry, so that the grinding aid, dispersion medium, and brucite powder are completely mixed in a uniform system, and then grind through the ball mill. %-50% of the filter cake, then put it into a constant temperature drying box to remove excess water, and use a pulverizer to break it up and make a sample before modification. The particle size of the sample is about 1.2um for D50 and about 1.2um for D97 2.4um.

[0038] Put the prepared ultrafine powder into 1000 parts of the suspension medium containing the modifier (100 parts by weight of brucite), wherein the suspension medium contains 10 parts of a mixture of linoleic acid and potassium linoleate ,...

Embodiment 3

[0041] Coarse grinding by Raymond mill, fine grinding and classification by jet mill to obtain a powder with a particle size of about 5um, and then brucite powder, dispersion medium sodium hexametaphosphate, grinding medium zirconia and grinding aid polyacrylic acid Put the sodium into the ball mill, add water and stir to make a slurry, so that the grinding aid, dispersion medium, and brucite powder are completely mixed in a uniform system, and then grind through the ball mill. %-50% of the filter cake, then put it into a constant temperature drying box to remove excess water, and use a pulverizer to break it up and make a sample before modification. The particle size of the sample is about 1.1um for D50 and about 1.1um for D97 2.3um.

[0042] Put the prepared superfine powder into 200 parts of suspension medium containing modifier (100 parts by weight of brucite), wherein the suspension medium contains 2 parts of oleic acid and sodium oleate mixture, 5 parts The mixture of t...

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Abstract

The invention discloses a preparation method for superfine brucite, and particularly discloses a composite modifying method for preparing the brucite into active brucite. The specific technological process is implemented through the steps of grinding, pulping, filtering, drying and smashing, modifying and the like. Through the technological method provided by the invention, the active brucite of which the surface is covered with a long carbon chain anionic surfactant is prepared, the surface of magnesium hydrate is provided with a long-chain radical (-C15-20H30-40), and alcohol radicals possibly generated after the hydrolysis of a coupling reagent and residual hydroxide radicals on the surface of the magnesium hydrate are subjected to condensation reaction to form automatic polymerization , as a result, an organic radical with high surface activity is grafted on the surface of the brucite; as the organic radical has good hydrophobicity, the possibility of aggregation among small particles of the brucite is reduced, and the dispersion in plastic is facilitated; the interface interaction between the active brucite and matters like plastic and resin is enhanced, and the flame retardant property of polymers is improved. Therefore, the superfine active brucite provided by the invention can be used in plastic and resin industries.

Description

technical field [0001] The invention relates to a preparation method of an ultrafine active brucite composite modified material. In particular, it relates to a preparation method of active brucite powder which can be used to improve the flame retardancy of plastics and resins. Background technique [0002] After the 1950s, with the development of polymer materials, plastics have become more and more widely used in various fields of production and life, especially in the construction industry, and the share of plastic applications has become larger and larger. At the same time, fires caused by the flammability of plastics have also brought heavy casualties and huge economic losses. Therefore, since the beginning of the 1960s, the development and use of flame-retardant plastics began to appear in people's field of vision. In terms of annual growth rate of output, flame retardants are also in the forefront of various plastic additives. Because of the price advantage, the most...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/06C08K9/04C08K9/00C08K3/22C08L23/12
Inventor 吴德贵江贤梁赵玉柱王征
Owner 丹东亿龙高科技材料有限公司
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