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Preparation method for magnetic water-based ink with nano-gold magnetic powder

A technology of water-based ink and nano-gold, which is applied in inks, household utensils, applications, etc., and can solve problems such as easy reunion, affecting writing, printing quality, and chromatic aberration

Inactive Publication Date: 2017-02-22
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantages of existing magnetic water-based inks are that they are poor in stability, easy to agglomerate and cause deterioration, uneven distribution, and sometimes chromatic aberration, which affects writing and printing quality

Method used

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  • Preparation method for magnetic water-based ink with nano-gold magnetic powder

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Experimental program
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Effect test

Embodiment 1

[0022] (1) Fe 3 o 4 For the preparation of nanoparticles, 10.8g FeCl 3 ·6H 2 O and 4.0 g FeCl 2 4H 2 O was dissolved in 50ml of HCl (0.01M) and added dropwise to 500ml of NaOH (1.5M) with stirring. The temperature was maintained at 80 °C during the whole dropwise synthesis process and nitrogen was passed through 2 Divide O 2 , the reaction immediately generates a black precipitate, and the synthesized Fe 3 o 4 The nanoparticles are separated, washed 3 times with 100ml of water, and dispersed in 500ml of tetramethylammonium hydroxide pentahydrate (0.1M) for subsequent use;

[0023] (2) Fe 3 o 4 / Au preparation, take the above 75ml Fe 3 o 4 The nanoparticles were diluted 20 times, then 75ml of sodium citrate (0.1M) was added, stirred at 1000rpm for 15 minutes, the solution was heated to 80°C, and then 7.5ml of hydroxylamine hydrochloride (0.2M) and 6.3ml of 1 % of chloroauric acid (HAuCl 4 ), at this moment, the color of the solution changes from black to deep red,...

Embodiment 2

[0026] (1) Fe 3 o 4 For the preparation of nanoparticles, 8 g FeCl 3 ·6H 2 O and 5g FeCl 2 4H 2 Dissolve O in 60ml of HCl (0.01M), and add it dropwise to 600ml of NaOH (1.5M) under stirring conditions, and keep the temperature at 80°C during the whole dropwise synthesis process and pass N 2 Divide O 2 .The reaction immediately generates a black precipitate, and the synthesized Fe 3 o 4 The nanoparticles are separated, washed 3 times with 100ml of water, and dispersed in 500ml of tetramethylammonium hydroxide pentahydrate (0.1M) for subsequent use;

[0027] (2) Fe 3 o 4 / Au preparation, take the above 75ml Fe 3 o 4 The nanoparticles were diluted 20 times, then 60ml of sodium citrate (0.15M) was added, stirred at a speed of 1000rpm for 15 minutes, the solution was heated to 80°C, and 9ml of hydroxylamine hydrochloride (0.2M) and 6.3ml of 1% Chlorauric acid (HAuCl 4 ), at this moment, the color of the solution changes from black to deep red, and the reaction is conti...

Embodiment 3

[0030] (1) Fe 3 o 4 For the preparation of nanoparticles, 9.6g FeCl 3 ·6H 2 O and 4.5 g FeCl 2 4H 2 Dissolve O in 55ml of HCl (0.01M), and add it dropwise to 500ml of NaOH (1.5M) under stirring conditions, and keep the temperature at 80°C during the whole dropwise synthesis process and pass N 2 Divide O2 , the reaction immediately generates a black precipitate, and the synthesized Fe 3 o 4 The nanoparticles are separated, washed 3 times with 100ml of water, and dispersed in 500ml of tetramethylammonium hydroxide pentahydrate (0.1M) for subsequent use;

[0031] (2) Fe 3 o 4 / Au preparation, take the above 85ml Fe 3 o 4 The nanoparticles were diluted 20 times, then 85ml of sodium citrate (0.1M) was added, stirred at a speed of 1000rpm for 15 minutes, the solution was heated to 80°C, and then 9.5ml of hydroxylamine hydrochloride (0.2M) and 6.3ml of 1 % of chloroauric acid (HAuCl 4 ), the color of the solution changed from black to dark red at this time, and the reacti...

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Abstract

The invention relates to magnetic water-based ink with nano-gold magnetic powder. The magnetic water-based ink comprises the following components in percent by weight: 2-4% of nano-gold magnetic powder and 96-98% of water-based ink. A method for the magnetic water-based ink with the nano-gold magnetic powder comprises the following steps of (S1) preparing Fe3O4 nanoparticles; (S2) preparing Fe3O4 / Au nanoparticles; (S3) continuously reacting for 5-6 hours at the temperature of 80 DEG C, and after separation, washing with water for spare use; (S4) adding water-based colour paste, a solvent, a surface active agent and a corresponding additive into Fe3O4 / Au powder till generating corresponding water-based ink. The magnetic water-based ink and the preparation method have the advantages that (1) the magnetic saturation degree is large, the size is uniform, the dispersity is good, the stability is strong, the timeliness is long, the coloring power is high and the color saturation degree is high; (2) the obvious defects of nano-size Fe3O4 as a permanent magnetic material, such as easy aggregation and loss of magnetism due to certain complex samples, can be overcome; and (3) a layer of Au housing is wrapped outside Fe3O4, so that effective protection for Fe3O4 can be realized.

Description

technical field [0001] The invention relates to a preparation method of water-based ink, which belongs to the field of organic chemical industry. Background technique [0002] Water-based ink is also called water-based ink or water-based ink. It is more environmentally friendly than ink and is often used in screen printing. The screen printing substrate is waterproof nylon fabric, leather, PET\PVC film that cannot be printed with ordinary nylon glue or PU glue. Coated Oxford cloth, raincoats, umbrellas and other water-repellent coated fabrics, etc. [0003] Water-based ink is made of water-soluble resin, advanced pigments, solvents and additives through compound processing and grinding. The water-soluble resin mainly acts as a binder in the ink to disperse the pigment particles evenly, to make the ink have a certain fluidity, to generate adhesion with the substrate material, and to make the ink form a uniform film after printing. The hue in the ink mainly depends on the pi...

Claims

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Application Information

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IPC IPC(8): C09D11/03
CPCC09D11/03
Inventor 熊华玉王渊王升富文为张修华何汉平邹其超
Owner HUBEI UNIV
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