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Cellulose/nano-inorganic particle composite pigment and its preparation method and application

A technology of nano-inorganic particles and composite pigments, which is applied in the field of dyeing pigments. It can solve the problems of poor compatibility between large-sized inorganic particles and plastic substrates, the decline in mechanical properties of plastic products, and poor coloring power of inorganic pigments to achieve durable and firm coloring. Ability, not easy to fall off, strong coloring effect

Active Publication Date: 2022-02-01
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The poor coloring power of traditional commercial inorganic pigments is mainly due to the fact that the inorganic particles are usually in the micron scale, the particle size is large, and the specific surface area is small, so the coloring efficiency is low and the coloring ability is poor
At the same time, the compatibility of large-sized inorganic particles with the plastic matrix is ​​not good, and it also leads to a decrease in the mechanical properties of plastic products.

Method used

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  • Cellulose/nano-inorganic particle composite pigment and its preparation method and application
  • Cellulose/nano-inorganic particle composite pigment and its preparation method and application
  • Cellulose/nano-inorganic particle composite pigment and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Add 0.4mol ferric chloride, 0.2mol ferrous sulfate and cellulose with 16 times the mass of iron to water to form a suspension. Then sodium hydroxide solution (1 mol / L) was added to adjust the pH value of the solution to 9-10, and stirred at 60° C. for 2 hours. Filter and dry to obtain red composite pigment cellulose / iron red.

[0037] Add 0.1mol ammonia water, 0.3mol ferric chloride and cellulose with 18 times the mass of iron to water to form a suspension. Stir at 95°C for 4 hours. Filter and dry to obtain yellow composite pigment cellulose / iron yellow.

[0038] First add 0.3mol potassium ferricyanide and cellulose into deionized water, add hydrochloric acid to adjust its pH value to 1-2, and obtain material A; then dissolve 0.4mol ferrous sulfate in deionized water, add hydrochloric acid to adjust the pH of the solution A value of 1-2 yielded material B. Wherein the mass of cellulose in material A is 25 times of the total mass of iron element in material A and mat...

Embodiment 2

[0044] Add 0.2mol ferric sulfate, 0.1mol ferrous chloride and cellulose with 18 times the mass of iron to water to form a suspension. Then add sodium hydroxide solution (2mol / L) to adjust the pH value to 11-12, and stir at 70°C for 3 hours. Filter and dry to obtain red pigment-cellulose / iron red.

[0045]Add 0.2mol ammonia water, 0.6mol iron sulfate and cellulose with 20 times the mass of iron element into the water. Stir at 80°C for 6 hours. Filter and dry to obtain yellow pigment-cellulose / iron yellow.

[0046] First add 0.6mol potassium ferricyanide and cellulose into deionized water, then add sulfuric acid to adjust the pH value to 1-2 to obtain material A; then dissolve 0.8mol ferrous sulfate in deionized water, add sulfuric acid to adjust the pH value of the solution For 1-2, material B was obtained. The mass of cellulose is 28 times of the total mass of iron element. Mix material A and material B, heat to 60°C and stir for 4 hours. Filter and dry to obtain blue pi...

Embodiment 3

[0049] Add 0.4mol ferric nitrate, 0.2mol ferrous nitrate and cellulose with 20 times the mass of iron element into water to form a suspension. Then potassium hydroxide solution (3 mol / L) was added to adjust the pH value to 9-10, and stirred at 80°C for 1 hour. Filtration and drying yielded red cellulose / iron red.

[0050] Dissolve 0.1mol ammonia water, 0.3mol ferric nitrate and cellulose with 22 times the mass of iron element into water. Stir at 95°C for 3 hours. Filtration and drying yielded yellow cellulose / iron yellow.

[0051] First add 0.15mol of sodium ferricyanide and cellulose into deionized water, then add hydrochloric acid to adjust the pH value of the solution to 1-2, and obtain material A; then dissolve 0.2mol of ferrous nitrate in deionized water, add hydrochloric acid to adjust the solution The pH value is 1-2, and material B is obtained. The mass of cellulose is 30 times of the total mass of iron element. Mix material A and material B, heat to 80°C and stir...

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Abstract

The invention discloses a cellulose / nano inorganic particle composite pigment and its preparation method and application, belonging to the technical field of dyeing pigments. The composite pigment is composed of cellulose and nano-inorganic particles grown in situ on the surface and inside of the cellulose, the size of the nano-inorganic particles is 20-300nm, and the mass fraction of the nano-inorganic particles in the composite pigment is 8-10% . The nano inorganic particles are one of iron red, iron yellow and Prussian blue. The composite pigment is applied to the dyeing of polymer products such as plastic, resin or rubber. The present invention uses cellulose as a raw material, adopts a specific process to grow nano-inorganic particles in situ inside and on the surface of cellulose, and the obtained composite pigment has a durable and firm coloring ability, and when applied to the coloring of a polymer matrix, it can improve the color of the matrix while dyeing. mechanical properties.

Description

technical field [0001] The invention relates to the technical field of dyeing pigments, in particular to a cellulose / nano-inorganic particle composite pigment and its preparation method and application. The prepared composite pigment can be used for dyeing polymer products such as plastics, resins, and rubbers. Background technique [0002] From electronic packaging, artificial skin to 3D printing, polymer products such as plastics, resins, and rubber are playing an increasingly important role in the development of modern technology. With the continuous expansion of the scope of application, people began to have requirements for the appearance of plastics while pursuing the functionality of plastics. For example, through the change of the color of the plastic, it can be applied to different occasions to make the logo clearer. [0003] Pigments used in plastics are generally divided into two categories: organic pigments and inorganic pigments. Commercial organic pigments, s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/12C08K3/22C08J3/20C08L101/00C08L21/00C09C1/22C09C1/24C09C3/10
CPCC08K9/12C08K3/22C08L101/00C08J3/20C09C1/24C09C1/22C09C3/10C08J2300/00C08J2321/00C08K2003/2272C08K2003/2275C08L21/00
Inventor 隋国鑫张阳马娜林国明刘冬艳孙兆松
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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