Manufacturing method of pearlescent pigment
I. Introduction
Pearlescent pigment is a kind of color material with unique optical effect, which is widely used in the field of raw materials for the production of chemicals, such as plastics, paints, inks and so on. The purpose of this paper is to discuss the manufacturing method of pearlescent pigment in order to provide reference for the production in related fields.
II. Overview of Pearlescent Pigment
Pearlescent pigment is mainly composed of raw materials such as mica, titanium dioxide, iron oxide, etc. Through special processing technology, it makes the surface of the pigment have a smooth and regular layered structure, which is capable of reflecting and interfering with the light, and thus produces a unique pearlescent effect. III. Manufacturing method
1. Preparation of raw materials
The preparation of pearlescent pigment requires the preparation of raw materials such as mica, titanium dioxide, iron oxide and so on. 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 pigment, it is necessary to treat the surface of mica to increase its binding force with the main body of pigment. A layer of titanium dioxide is usually deposited on the surface of mica by chemical deposition method 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 appropriate amount of dispersant and water are added to prepare pigment slurry.
4. Pigment slurry grinding
Put the pigment slurry into the grinding equipment, and carry out the grinding process, so that the pigment particles become finer and more uniform. At the same time, the temperature and time of the grinding process should be controlled to prevent excessive wear of the pigment particles. 5. Washing and drying
After grinding, the pigment slurry is washed to remove impurities and water. Then, the washed pigment pulp is dried to get the finished product of pearlescent pigment.
4. Precautions
1. In the manufacturing process, it is necessary to strictly control each process parameter to ensure stable product quality.
2. In order to avoid excessive abrasion of pigment particles, it is necessary to choose suitable grinding equipment and process conditions.
3. In the washing and drying process, it is necessary to pay attention to the operation specification to prevent the product from being polluted or damaged.
V. Conclusion
The manufacturing method of pearlescent pigment involves a number of process links, and it is necessary to strictly control each process parameter and operation specification to ensure product quality. Through the manufacturing method introduced in this paper, pearlescent pigment with excellent optical properties can be prepared to provide high-quality color materials for the field of raw materials for chemical production. At the same time, in order to better meet the market demand, it is also necessary to continuously study and optimize the manufacturing process, improve the production efficiency and reduce the cost to create greater economic benefits for the enterprise.
