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Preparation method of clay mineral hybridized cobalt blue pigment

A clay mineral, hybrid technology, applied in chemical instruments and methods, inorganic pigment processing, cobalt compounds, etc., to achieve the effects of low energy consumption, high yield, and avoidance of low yield

Pending Publication Date: 2022-05-06
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing clay mineral hybrid cobalt blue pigments, to solve the technical defects of cobalt blue pigments prepared by traditional solid-phase and liquid-phase methods, and to develop new technologies for efficient, clean and continuous preparation of inorganic pigments

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  • Preparation method of clay mineral hybridized cobalt blue pigment
  • Preparation method of clay mineral hybridized cobalt blue pigment
  • Preparation method of clay mineral hybridized cobalt blue pigment

Examples

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Effect test

Embodiment 1

[0023] Put 100 g of attapulgite, 97.61 g of cobalt nitrate, 125.82 g of aluminum nitrate and 122.83 g of aluminum sulfate into a differential-speed co-rotating twin-screw extruder to obtain a precursor. Clay mineral hybrid cobalt blue pigment, the corresponding samples are marked as S-1, L * , a * , b * See Table 1 for color values.

Embodiment 2

[0025] 60 g of kaolinite, 40 g of sepiolite, 95.36 g of cobalt sulfate, 54.58 g of aluminum chloride and 35.27 g of aluminum hydroxide were extruded into a co-rotating twin-screw extruder to obtain a precursor, which was crystallized at 1000ºC for 90 min later, the clay mineral hybrid cobalt blue pigment was obtained by crushing, and the corresponding samples were marked as S-2, L * , a * , b * See Table 1 for color values.

Embodiment 3

[0027] Put 50g montmorillonite, 50g dickite, 20g attapulgite, 32.68g tricobalt tetroxide, 33.80g cobalt acetate, 27.66g alumina and 128.75g aluminum potassium sulfate into co-rotating twin-screw extruder to extrude The precursor was crystallized at 950ºC for 30 minutes, then pulverized to obtain a clay mineral hybrid cobalt blue pigment. The corresponding samples were marked as S-3, L * , a * , b * See Table 1 for color values.

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Abstract

The invention provides a preparation method of a clay mineral hybridized cobalt blue pigment, and belongs to a preparation technology of a nano hybridized pigment. The method comprises the following steps: putting a clay mineral, an aluminum source and a cobalt source into a double-screw extruder, extruding to prepare a precursor, crystallizing at a high temperature of 800-1200 DEG C for 30-240 minutes, and crushing to prepare the clay mineral hybridized cobalt blue pigment. The clay mineral hybridized cobalt blue pigment is prepared by adopting a twin-screw extruder, so that the technical problems of intermittent production and high energy consumption of a traditional solid phase method are solved, and the defects of low yield, more wastes and complicated steps of a liquid phase method are also avoided. The method disclosed by the invention is low in energy consumption, high in yield, green, clean, low in production cost and suitable for industrial continuous production.

Description

technical field [0001] The invention relates to a method for preparing clay mineral hybrid cobalt blue pigment, which belongs to the preparation technology of nanometer hybrid pigment. Background technique [0002] Cobalt blue pigment is a spinel-type high-performance environmentally friendly inorganic pigment with excellent physical and chemical properties, which is irreplaceable in blue pigments. However, cobalt ore is rarely distributed in nature, and cobalt compounds are expensive. For a long time, cobalt blue pigments have been limited to being used as paints. Studies have shown that the introduction of inorganic substrates such as clay minerals can not only effectively reduce the production cost of cobalt blue pigments, but also improve the color performance and high temperature crystallization temperature of cobalt blue pigments. At present, the preparation method of clay mineral-based cobalt blue hybrid pigment is mainly based on the liquid phase method, and the obt...

Claims

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Application Information

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IPC IPC(8): C09C1/40C09C3/06C01G51/00
CPCC09C1/407C09C1/40C09C3/06C01G51/00C01P2002/72C01P2002/01C01P2006/62C01P2006/63C01P2006/64C01P2006/65
Inventor 牟斌王爱勤杨浩王晓雯惠爱平许江
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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