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[Chemical Knowledge]：Manufacturing method and process of pearlescent pigment

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The manufacturing method
of pearlescent pigment
1. Introduction

pearlescent pigment is a color material with unique optical effect, which is widely used in the field of chemical production raw materials, such as plastics, coatings, inks, etc. The purpose of this paper is to explore the manufacturing methods of pearlescent pigments in order to provide reference for the production of related fields.

2. pearl pigment overview

pearl pigment is mainly composed of mica, titanium dioxide, iron oxide and other raw materials, through special processing technology, the pigment surface has a smooth and regular layered structure, can reflect and interfere with light, resulting in a unique pearlescent effect.

3. manufacturing method

1. raw material preparation

preparation of pearlescent pigment need to prepare mica, titanium dioxide, iron oxide and other raw materials. Among them, mica is the main substrate, and it is necessary to ensure that its lamellar structure is complete and smooth.

2. Mica surface treatment

In order to improve the performance of pearlescent pigments, the mica surface needs to be treated to increase its binding force with the pigment body. A layer of titanium dioxide is usually deposited on the surface of mica by chemical deposition to increase its hardness and optical properties.

3. pigment slurry preparation

the treated mica, titanium dioxide, iron oxide and other raw materials are mixed according to a certain proportion, and an appropriate amount of dispersant and water is added to prepare the pigment slurry.

4. pigment slurry grinding

the pigment slurry into the grinding equipment, grinding treatment, so that the pigment particles become more fine and uniform. At the same time, it is necessary to control the temperature and time during the grinding process to prevent excessive wear of the pigment particles.

5. Washing and drying

After the grinding is completed, the pigment slurry is washed to remove impurities and moisture. Then, the washed pigment slurry is dried to obtain a pearlescent pigment product.

4. precautions

1. In the manufacturing process, it is necessary to strictly control the process parameters to ensure stable product quality.
2. In order to avoid excessive wear of pigment particles, it is necessary to select suitable grinding equipment and process conditions.
3. In the process of washing and drying, it is necessary to pay attention to the operation specifications to prevent the product from being contaminated or damaged.

5. Conclusion The manufacturing method of

pearlescent pigment involves many process links, and it is necessary to strictly control the process parameters and operation specifications to ensure product quality. Through the manufacturing method described in this paper, pearlescent pigments with excellent optical properties can be prepared to provide high-quality color materials for the field of chemical production raw materials. At the same time, in order to better meet the market demand, it is necessary to continuously study and optimize the manufacturing process, improve production efficiency and reduce costs, and create greater economic benefits for enterprises.

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