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

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...

Examples

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).

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...

Examples

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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