Method for preparing iron oxide red hybridization pigment by means of clay minerals
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A technology of clay minerals and pigments, applied in chemical instruments and methods, inorganic pigment treatment, fibrous fillers, etc., can solve the problems of poor acid resistance, iron red color is not bright enough, and has no color, etc., to achieve good dispersion and bright color , the effect of stable quality
Active Publication Date: 2016-06-22
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology
However, the color of iron red itself is still not bright enough, and its acid resistance is poor, which cannot meet the needs of use in many fields. Therefore, improving the performance of iron red through technological innovation has always attracted great attention.
[0004] 中国专利CN102153148A、CN104860718A、CN104861745A、CN103508493A、CN103539207A、CN104556243A、CN103788707A、CN103818969A、CN103818968A、CN104559341A、CN104386759A、CN103342391A、CN105129866A公开了一系列以不同铁盐为原料,通过不同工艺合成纯铁红(Fe 2 o 3 ) method, but these methods focus more on how to improve the preparation method and process of iron red, or change the particle size of iron red to improve the performance of iron red, and how to construct a new type of red hybrid pigment through material composition optimization and design, so far Still no related reports
However, there are no relevant reports and application precedents for the construction of iron red hybrid pigments using clay minerals.
Method used
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Embodiment 1
[0026] Weigh 10g of bentonite mineral powder that has been crushed and treated by rollers and ball mill for 12min, soak it with an aqueous solution containing 200g of ferric chloride for 2h, stir and mix evenly, then disperse it into 600mL of water, then add 0.15g of tartaric acid, stir well, Then transfer to a 1L hydrothermal reaction kettle, react at a temperature of 160°C and a pressure of 2MPa for 5h, and then cool down to room temperature at a rate of 10°C / min; the solid product is separated, washed, dried, and pulverized to obtain a red complex Chemical pigment (code HR1).
Embodiment 2
[0028] Weigh 100g of Yimeng clay mineral powder that has been crushed and roller-treated, and after ball milling for 120min, soak it with an aqueous solution containing 50g of ferric nitrate for 2h, mix it evenly with mechanical stirring, then disperse it into 400mL of water, add 0.1g of benzoic acid, and Stir evenly, then transfer to a 1L hydrothermal reaction kettle, react at a temperature of 300°C and a pressure of 8MPa for 60h, and then cool down to room temperature at a rate of 10°C / min; the solid product is separated, washed, dried, and pulverized. A red hybrid pigment (code HR2) was obtained.
Embodiment 3
[0030] Weigh 50g of crushed and roller-treated vermiculite ore powder and ball mill for 60min, soak it in an aqueous solution containing 100g of ferric sulfate for 2h, stir and mix evenly, then disperse it into 500mL of water, and then add 0.5g of ethylenediaminetetraacetic acid, Stir well, then transfer to a 1L hydrothermal reaction kettle, react at a temperature of 180°C and a pressure of 3MPa for 24h, then cool down to room temperature at a rate of 10°C / min, and separate, wash, dry, and pulverize the solid product Finally, a red hybrid pigment (No. HR3) is obtained.
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Abstract
The invention discloses a method for preparing an iron oxide red hybridization pigment by means of clay minerals. According to the method, natural clay minerals are dispersed in water to form suspension liquid after being subjected to breaking, double rolling and ball milling, molysite and auxiliaries are then added, evenly dispersed and transferred into a hydrothermal reaction kettle, pH of the solution is controlled to be 0.5-4, reaction lasts for 5-60 h at the pressure of 2-8 MPa and the temperature of 160-300 DEG C, and programmed cooling is conducted at the rate of 10 DEG C/min to indoor temperature; the solid product is separated, washed, dried and smashed to generate the bright red hybridization pigment. Structural evolution and recombination are induced through hydrothermal reaction, reaction parameters are precisely controlled, exchange is conducted between Fe3+ and ions in clay minerals under the action of auxiliaries, in-situ formation of a crystalline phase is achieved, the novel silicon-aluminum iron oxide red hybridization pigment with bright color, high stability and uniform size is obtained, and the cost-effective red hybridization pigment is provided for multiple fields including coating, paint, ceramic and ink.
Description
technical field [0001] The invention relates to a method for preparing iron red hybrid pigments, in particular to a method for preparing iron red hybrid pigments by using clay minerals, and belongs to the technical field of deep processing of natural non-metallic minerals and preparation of nanocomposite materials. 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 largest producer of inorganic pigments in the world. However, my country's inorganic pigment production technology is low, and the products are mainly low-end products, resulting in the low competitiveness of my country's pigment products in the global market, which 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 natur...
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Application Information
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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/24C09C3/06C09C3/08
CPCC09C1/24C09C3/006C09C3/06C09C3/08
Inventor 王文波田光燕王爱勤牟斌张俊平汪琴康玉茹
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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