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A preparation method of quaternary ammonium salt modified organic magnesium aluminum silicate for thickening oily system

A technology of magnesium aluminum silicate and quaternary ammonium salt, applied in chemical instruments and methods, inorganic chemistry, silicon compounds, etc., can solve the problem of low electronegativity of magnesium aluminum silicate, limited expansion degree, and thickening of organic magnesium aluminum silicate. Problems such as low viscosity-increasing ability, to achieve the effect of improving hydrophobic and lipophilic properties, improving viscosity and thickening ability, easy dispersion and swelling

Active Publication Date: 2020-01-21
JIANGSU HEMINGS NEW MATERIALS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] (1) Due to the low electronegativity of magnesium aluminum silicate, the amount of intercalation of organic quaternary ammonium salt cations is small, resulting in further improvement of the hydrophobic and lipophilic properties of organic magnesium aluminum silicate
[0006] (2) Because the interlayer bonding force of magnesium aluminum silicate is relatively large, the degree of expansion of organic magnesium aluminum silicate in oily systems (such as xylene, etc.) is limited, which directly leads to its thickening and viscosifying ability being significantly lower than that of inorganic magnesium silicate Thickening and Viscosifying Ability of Aluminum in Aqueous System
[0007] (3) The long-chain hydrocarbon molecules in the organic quaternary ammonium salt cation inserted between the layers can easily extend out of the interlayer region, thus shielding a part of the positively charged side parts, making it difficult to form a "card house" gel structure , which further leads to low thickening and viscosifying ability of organomagnesium aluminum silicate in oily system

Method used

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  • A preparation method of quaternary ammonium salt modified organic magnesium aluminum silicate for thickening oily system

Examples

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Effect test

Embodiment 1

[0024] A quaternary ammonium salt-modified organic magnesium aluminum silicate for thickening oily systems is prepared from the following raw material components in parts by mass according to the following steps:

[0025] (1) First, set the mass concentration of 1 part to 0.01mol·L -1 Add the diluted phosphoric acid aqueous solution to 100 parts of sodium-based montmorillonite powder and stir evenly, then add 1 part of beryllium oxide and 5 parts of La 2 O 3 And continue to stir evenly, and then roast at 150 ℃ for 5 minutes; then take out and add 1000 parts of pure water, fully stir until the montmorillonite is completely dispersed;

[0026] (2) Next, add 10 parts of quaternary ammonium salt octadecyl trimethyl ammonium chloride to 500 parts of pure water, and heat to 75 ℃, under the condition of sufficient stirring, until the quaternary ammonium salt is completely dissolved; The salt solution is added to the montmorillonite suspension prepared in step (1), and the temperature is in...

Embodiment 2

[0028] A quaternary ammonium salt-modified organic magnesium aluminum silicate for thickening oily systems is prepared from the following raw material components in parts by mass according to the following steps:

[0029] (1) First, set the concentration of 5 parts to 0.1mol·L -1 Add the diluted phosphoric acid aqueous solution to 100 parts of montmorillonite powder and stir evenly, then add 2 parts of magnesium oxide, 3 parts of copper oxide, and 10 parts of Ce 2 O 3 , 5 parts Ln 2 O 3 And continue to stir evenly, and then roast at 250 ℃ for 15 minutes; then take out and add 2000 parts of pure water, fully stir until the montmorillonite is completely dispersed;

[0030] (2) Next, add 15 parts of dioctadecyl dimethyl ammonium chloride and 15 parts of dioctadecyl methyl benzyl ammonium chloride to 800 parts of pure water, and heat to 90°C, and stir thoroughly Under the conditions until the quaternary ammonium salt is completely dissolved; then the quaternary ammonium salt solution is...

Embodiment 3

[0032] A quaternary ammonium salt-modified organic magnesium aluminum silicate for thickening oily systems is prepared from the following raw material components in parts by mass according to the following steps:

[0033] (1) First, set the concentration of 3 parts to 0.05mol·L -1 Add the diluted phosphoric acid aqueous solution to 100 parts of montmorillonite powder and stir evenly, then add 1 part of magnesium oxide, 1 part of copper oxide, 1 part of zinc oxide, 3 parts of La 2 O 3 , 3 parts Ce 2 O 3 , 3 parts Ln 2 O 3 And continue to stir evenly, and then roast at 200 ℃ for 10 minutes; then take out and add 1500 parts of pure water, fully stir until the montmorillonite is completely dispersed;

[0034] (2) Next, add 5 parts of octadecyl trimethyl ammonium bromide, 5 parts of dioctadecyl dimethyl ammonium bromide, and 5 parts of octadecyl dimethyl benzyl ammonium chloride to 700 parts In pure water, heat to 80°C, and stir thoroughly until the quaternary ammonium salt is completely...

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Abstract

The invention discloses a preparation method of quaternary ammonium salt modified organic magnesium aluminosilicate for thickening an oily system. The preparation method is characterized by comprisingthe following steps: taking montmorillonite in the nature as a reaction base material; firstly, carrying out high-temperature solid-phase reaction to prepare PO4<3-> / rare earth modified montmorillonite; then carrying out quaternary ammonium salt intercalation modification to produce the organic magnesium aluminosilicate which has strong expansibility, great viscosity and high thickening capability in the oily system. The quaternary ammonium salt modified organic magnesium aluminosilicate has an extremely great application prospect in industries including oil paint, printing ink, high-temperature lubricating grease and the like.

Description

Technical field [0001] The invention relates to the field of organic bentonite, in particular to a preparation method of organic magnesium aluminum silicate with high viscosity and high thickening ability suitable for paint, ink, adhesive and other industries. Background technique [0002] For many years, the research on the intercalation exchange reaction between montmorillonite and quaternary ammonium salt in bentonite has been one of the research hotspots in related fields. Although the scientific name of montmorillonite is called magnesium aluminum silicate, people generally call bentonite concentrate with magnesium aluminum silicate purity not higher than 95% as montmorillonite, and only call it montmorillonite with a purity higher than 95%. As magnesium aluminum silicate. Part A1 in the aluminum oxide octahedral layer in the magnesium aluminum silicate structure 3+ Mg 2+ Instead, the surface of magnesium aluminum silicate is negatively charged. In order to balance these ne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B33/44
CPCC01B33/44
Inventor 张天志张天毅
Owner JIANGSU HEMINGS NEW MATERIALS TECH CO LTD
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