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A kind of preparation method of bionic superhydrophobic composite organic pigment

A technology of organic pigments and composite pigments, applied in organic dyes, biocide-containing paints, antifouling/underwater coatings, etc., can solve the problems of superhydrophobic performance, poor lubrication effect, high cost, etc., to improve the application Value, low cost, and improved stability

Active Publication Date: 2019-06-18
XIANGTAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Chinese patent CN105102558A introduces a superhydrophobic coating composition, which can include organically modified nanoparticles of silicon dioxide or titanium as a hydrophobic agent, and polyurethane as a binder, the coating composition Materials are suitable for applications such as glass, metal and plastic, and automotive paint, but once the outer surface of the material is abraded, the superhydrophobic properties of the surface will be significantly affected
However, the process is complicated, the cost is expensive, the lubrication effect is not good, and the effect is slow

Method used

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  • A kind of preparation method of bionic superhydrophobic composite organic pigment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1 Preparation method of superhydrophobic composite methylene blue pigment

[0034] (1) Activation of sepiolite: add hydrochloric acid with a concentration of 1.0mol / L to sepiolite according to the solid-liquid ratio of 1:10 for activation, filter and wash with deionized water several times until neutral; dry at 105°C for 12 hours to obtain After activation of sepiolite, BET characterization shows that the specific surface area of ​​activated sepiolite is 184m 2 / g;

[0035] (2) Dissolve 0.2g of methylene blue in 100ml of water, add 10g of sepiolite activated in step (1) under stirring conditions, stir and absorb at room temperature for 4h, filter and centrifuge, and dry at 80°C for 2 hours to obtain (sea pumice / methylene blue) composite pigment; (same type pigments include: methyl violet, methyl red, basic yellow, basic red, rhodamine B, etc.) (the composite pigment here is used as the product of comparative example 1 for follow-up comparison)

[0036] (3) Th...

Embodiment 2

[0048] Example 2 Preparation method of superhydrophobic composite basic yellow pigment

[0049] (1) Activation of sepiolite: add hydrochloric acid with a concentration of 1.0mol / L to sepiolite according to the solid-liquid ratio of 1:10 for activation, filter and wash with deionized water several times until neutral; dry at 105°C for 12 hours to obtain After activation of sepiolite, BET characterization shows that the specific surface area of ​​activated sepiolite is 184m 2 / g;

[0050] (2) Dissolve 0.2g of Basic Yellow in 100ml of water, add 10g of sepiolite activated in step (1) under stirring conditions, stir and absorb at room temperature for 4h, filter and centrifuge, and dry at 80°C for 2 hours to obtain (Sepiolite / basic yellow) composite pigment; (same type of pigments include: methyl violet, methyl red, basic yellow, basic red, rhodamine B, etc.) products, for subsequent comparison)

[0051] (3) The ammonia solution is bubbled through the drying tower and passed thr...

Embodiment 3

[0057] (1) Activation of sepiolite: Add hydrochloric acid with a concentration of 2.0mol / L to sepiolite according to the solid-to-liquid ratio of 1:20 for activation, filter and wash with deionized water several times until neutral, and dry at 105°C for 12 hours to obtain Activated sepiolite;

[0058] (2) Dissolve 0.1g of rhodamine B in 100ml of water, add 10g of sepiolite activated in step (1) under stirring conditions, stir and absorb at room temperature for 6h, filter and centrifuge with suction, and dry at 60°C for 4 hours to obtain (Sepiolite / Rhodamine B) Composite Pigment; (Pigments of the same type include: Methyl Violet, Methyl Red, Basic Yellow, Basic Red, Rhodamine B, etc.)

[0059] (3) The ammonia solution is bubbled through the drying tower and passed through anhydrous ethanol to obtain a saturated ethanol solution of ammonia;

[0060] (4) Take 5g of the composite pigment obtained in step (2) and completely dissolve it in the ethanol saturated solution flask of 80...

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Abstract

The invention discloses a preparation method of a bionic super-hydrophobic composite organic pigment. The preparation method comprises the following steps: activating meerschaum by an acid, using meerschaum to adsorb an organic pigment, and using organic silane to modify meerschaum. According to the preparation method, ethyl n-silicate is used to form a rough outer surface on the surface of an organic composite pigment taking modified meerschaum as the carrier; the thickness of the rough surface can be controlled by controlling the concentration of ethyl n-silicate; at the same time, a silanization agent is added to modified the composite pigment so as to form alkyl groups on the outer surface of the composite pigment, the surface energy of the composite pigment is reduced, and the meerschaum composite organic pigment has a super-hydrophobic property therefore. The synthesis equipment is simple, no pollution is generated, and the investment is little. The obtained super-hydrophobic composite organic pigment has a bright color and luster, also has a super-hydrophobic and self-cleaning function, does not dissolve in liquid acid or alkali, and has a strong performance on resisting organic solvents, heat, and UV aging.

Description

technical field [0001] The invention relates to the fields of material preparation and chemical engineering, in particular to a method for preparing a bionic superhydrophobic composite organic pigment. Background technique [0002] When the contact angle between a water droplet and a solid surface is greater than 150° and the rolling angle is less than 10°, the solid surface is called a superhydrophobic surface. Superhydrophobic surfaces can be used in the fields of self-cleaning, anti-fouling, dust-proof and other aspects of materials, and have great practical application value. There are many superhydrophobic surface organisms in nature, such as the surface of lotus leaves and the feathers of water birds. [0003] Sepiolite has the reputation of "platinum" among stones, mainly because of its large specific surface area, large porosity, low price, and good adsorption performance. Therefore, sepiolite can be widely used to adsorb dyes to form pigment products. [0004] At ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/16C08K9/12C08K9/06C08K9/02C08K7/26C08K5/00C09B67/20
CPCC08K5/0041C08K7/26C08K9/02C08K9/06C08K9/12C09B67/0065C09D5/1612C09D5/1687
Inventor 刘平乐黄金良熊伟郝芳吕扬罗和安熊绍锋刘卫湘谭建杰谢彦陈秋霖
Owner XIANGTAN UNIV
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