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High-dispersion nano organic clay composition and preparation method thereof

A nano-organic and organic clay technology, applied in the chemical industry, can solve the problems of low stability, poor dispersion performance, difficulty in dispersing and forming peeling nanosheets, etc., to achieve improved wetting performance, good dispersion, and improved wetting and dispersion performance effect

Inactive Publication Date: 2018-09-07
ZHEJIANG FENGHONG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The organoclay prepared by the above method is difficult to disperse and form a complete exfoliated nanosheet in an organic medium, and has poor dispersion performance and low stability.

Method used

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  • High-dispersion nano organic clay composition and preparation method thereof

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Embodiment 1

[0047] Add 1kg of bentonite mineral powder, add 15L of water, stir and disperse to make slurry, then add 50g of sodium carbonate, stir and disperse for 2h. Centrifugal purification to obtain purified montmorillonite slurry. At this time, the solid content of the slurry is 35g / L, and the cation exchange capacity (CEC) is 95mmol / 100g 土 . Take 10L of slurry and raise the temperature to 80°C, adjust the pH to 3-4 with dilute sulfuric acid, stir at constant temperature for 1h, add octadecyltrimethylammonium chloride: 105g (1.0 times CEC), stir at constant temperature for 1h; add lactic acid fatty acid glyceride: 30g, constant temperature stirring reaction for 1h; add titanate: 4g, constant temperature stirring reaction for 1.5h, plate and frame filter press dehydration, drying, pulverization, micronization treatment, control the particle size of the finished dry powder D50≤5um, and obtain quick-dispersion nano-organic clay. Designation FH-1.

Embodiment 2

[0049] Take purified montmorillonite slurry (implementation example 1): 10L, heat the slurry to 60°C, adjust the slurry to pH 5-6 with oxalic acid solution, stir at constant temperature for 1 hour, add dihydrogenated tallow dimethyl ammonium chloride: 192g (1.0 times CEC ), stirred at constant temperature for 1 hour; added glyceryl monostearate: 20g, stirred at constant temperature for 1 hour; added hexanediol: 35g, stirred at constant temperature for 1 hour, dehydrated by plate and frame filter press, dried, pulverized, and micronized to control the finished product The particle size of the dry powder is D50≤5um, and the quick-dispersion nano-organic clay is obtained. Designation FH-2.

Embodiment 3

[0051] Take purified montmorillonite slurry (implementation example 1): 10L, heat the slurry to 60°C, adjust the slurry to pH 5-6 with oxalic acid solution, stir at constant temperature for 1 hour, add dihydrogenated tallow dimethyl ammonium chloride: 200g (1.02 times CEC ), stirred at constant temperature for 1 hour; added triacetin: 15 g, stirred for 1 hour at constant temperature; added fatty alcohol ethoxylate: 5 g, stirred for 1 hour at constant temperature, dehydrated by plate and frame filter press, dried, pulverized, micronized, controlled The particle size of the finished dry powder is D50≤5um, and the quick-dispersion nano-organic clay is obtained. Designation FH-3.

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Abstract

The invention relates to a high-dispersion nano organic clay composition and a preparation method thereof and belongs to the field of the chemical industry. A main surfactant, an auxiliary surfactantand a surface modifier which are different in type are adopted for conducting layer insertion on the surface, modification and decoration on clay, the wetting dispersion performance of the organic clay is improved, and the quick dispersion requirement is met. The high-dispersion nano organic clay product is mainly applied to the fields of paint, ink systems and nano composite materials, and the thixotropic performance mechanical performance, blocking performance and flame retardant performance of the system are improved.

Description

technical field [0001] The invention relates to an organic clay, in particular to a fast-dispersing nano-organic clay composition and a preparation method thereof, belonging to the field of chemical industry. Background technique [0002] Organoclay is a kind of clay that is used as raw material. After cation exchange, organophilic cations are intercalated into the interlayer or end face, and the exchangeable alkali metals or alkaline earth metals in the clay are replaced, so that the surface of the clay becomes hydrophilic. sex into lipophilicity. The raw materials used for organoclay are usually: montmorillonite, hectorite, saponite, rectorite, sepiolite, attapulgite. Their common feature is that they have cation exchange performance and water dispersion performance. [0003] Organoclay has a very important application value in the chemical industry. It can be used as a thickener and thixotropic agent in paints, inks, greases, oil-based drilling fluids, etc. It can also ...

Claims

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Application Information

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IPC IPC(8): C08K9/06C08K9/04C08K3/34C08L67/08
Inventor 李静静王春伟宋海明陈杰何倩刘国栋廖祥磊
Owner ZHEJIANG FENGHONG NEW MATERIAL
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