Method for preparing iron oxide red hybridization pigment by means of clay minerals

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...

AI Technical Summary

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.

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