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Attapulgite-based iron oxide red composite pigment and preparation method thereof

A technology of iron oxide red and composite pigments, applied in the direction of pigment paste, etc., can solve the problems of poor color performance of iron oxide red pigments, high toxicity of cadmium red pigments, low redness and brightness, etc., achieve superior pigment performance and improve dispersibility The effect of improving uniformity and color performance

Active Publication Date: 2021-08-24
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with the most commonly used cadmium red pigment, the color performance of iron oxide red pigment is poor, and the redness and brightness are low
The cadmium red pigment has the disadvantages of high toxicity and high cost.

Method used

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  • Attapulgite-based iron oxide red composite pigment and preparation method thereof
  • Attapulgite-based iron oxide red composite pigment and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A new method for iron oxide red composite pigments, comprising the following steps: 1) adding 8% to 10% (mass fraction, the same below) attapulgite (No. 1) and 8% to 8% to two groups of deionized water respectively 10% red iron oxide (No. 2). 2) Add 0.08%-0.2% sodium hexametaphosphate to No. 1 solution, add 0.08%-0.2% anionic polymer and 0.5%-1% defoamer to No. 2 solution, and stir. 3) At the speed of 950-1250r / min, use a high-speed dispersing mixer to disperse the two groups of solutions for 60-75min. 4) Mix the two groups of solutions, add zirconia beads, grind and immobilize with a dispersing disc mixer for 60-90 minutes at a speed of 1350-1650 r / min. 5) drying, grinding and filtering to obtain attapulgite iron oxide red composite pigment (hb1).

Embodiment 2

[0031] A new method for iron oxide red composite pigments, comprising the following steps: 1) adding 4% to 5% attapulgite (No. 1) and 8% to 10% iron oxide red (2 No). 2) Add 0.08%-0.1% sodium hexametaphosphate to No. 1 solution, add 0.08%-0.2% anionic polymer and 0.4%-0.8% defoamer to No. 2 solution, and stir. 3) At the speed of 950-1200r / min, use a high-speed dispersing mixer to disperse the two groups of solutions for 60-75min. 4) Mix the two groups of solutions, add zirconia beads, grind and immobilize with a dispersing disc mixer for 60-90 minutes at a speed of 1350-1650 r / min. 5) drying, grinding and filtering to obtain attapulgite iron oxide red composite pigment (hb2).

Embodiment 3

[0033] A new method for iron oxide red composite pigments, comprising the following steps: 1) adding 0.5% to 1.5% attapulgite (No. 1) and 2% to 3% iron oxide red (2 No). 2) Add 0.05%-0.1% sodium hexametaphosphate to No. 1 solution, add 0.2%-0.3% anionic polymer and 0.2%-0.4% defoamer to No. 2 solution, and stir. 3) At the speed of 950-1250r / min, use a high-speed dispersing mixer to disperse the two groups of solutions for 60-75min. 4) Mix the two groups of solutions, add zirconia beads, grind and immobilize with a dispersing disc mixer for 60-90 minutes at a speed of 1350-1650 r / min. 5) drying, grinding and filtering to obtain the attapulgite iron oxide red composite pigment (hb3).

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Abstract

The invention discloses an attapulgite-based iron oxide red composite pigment and a preparation method thereof, wherein the attapulgite-based iron oxide red composite pigment comprises the following raw materials in percentage by mass: 0.02%-0.4% of a dispersant, 0.2%-1% of an antifoaming agent, 5%-10% of iron oxide red, 0.5%-10% of attapulgite, and the balance being deionized water. The pigment with better color performance and stability is obtained by controlling the ratio of the attapulgite to the iron oxide red, the content of the dispersant, the dispersing and grinding rate and other conditions. The preparation method of the composite pigment provided by the invention can effectively improve the dispersity and uniformity of the iron oxide red pigment, has the advantages of excellent pigment performance, simple method, simple operation and the like, and provides a more efficient, environment-friendly and convenient method for producing the iron oxide red composite pigment.

Description

technical field [0001] The invention relates to a pigment and a preparation method thereof, in particular to an iron oxide red composite pigment and a preparation method thereof. Background technique [0002] Pigments are indispensable coloring materials in the paint and paint industry. With the growing demand for inorganic pigments, my country has become the world's largest producer of inorganic pigments. However, my country's inorganic pigment production technology level is insufficient, and the products are mainly low-end products, which leads to the low competitiveness of my country's pigment products in the global market and restricts the development of pigment-related industries and industries. In recent years, as people pay more and more attention to the environmental friendliness of materials, it has become an inevitable trend to use natural raw materials to develop non-toxic and environmentally friendly pigments with bright colors, strong tinting strength and low c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D17/00
CPCC09D17/007C09D17/001
Inventor 刘松琴韩奕森单淼李进
Owner SOUTHEAST UNIV
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