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[Chemical Knowledge]：The production and manufacturing method and process of thermosetting coating.

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Thermosetting coating is a type of coating widely used in the field of chemical production raw materials, and its manufacturing method involves multiple links and technologies. This paper will introduce the manufacturing method of thermosetting coating in detail, including raw material preparation, mixing, grinding and dispersing, adjusting pH value, packaging and storage.

1. raw material preparation

thermosetting coatings need to prepare a variety of raw materials, including resins, pigments, fillers, solvents and additives. Among them, the resin is the main film-forming material of the coating, the pigment is used to give the coating color and hiding power, the filler is used to improve the mechanical properties and filling of the coating, the solvent is used to adjust the construction performance and drying speed of the coating, and the additive is used to improve the performance of the coating such as leveling, anti-settling and anti-sagging.

2. mixing and stirring

the prepared raw materials are added into the stirring tank according to a certain proportion, and the various raw materials are fully mixed and evenly by high-speed stirring equipment. In the process of stirring, it is necessary to control the stirring speed and time to avoid excessive stirring or uneven stirring.

3. grinding dispersion

the pigment and filler particles in the thermosetting coating are large, and they need to be ground and dispersed to be fully dispersed in the resin. Grinding and dispersion can be carried out by a sand mill, a ball mill or a three-roll machine, and the pigment and filler particles are ground to a certain fineness and uniformly dispersed in the resin.

4. adjust the pH value

the pH value of thermosetting coatings has an important influence on its construction performance and drying speed, so it is necessary to adjust the pH value according to the specific requirements of the coating. Generally, acidic or alkaline substances are used for adjustment, and attention should be paid to the stable range of pH control.

5. packaging and storage

manufactured thermosetting coatings need to be packaged and stored to ensure their quality and stability. Packaging generally use iron drums, plastic drums or cartons and other containers, storage need to pay attention to avoid direct sunlight and high temperature environment, while the need for regular inspection and maintenance.

The above is a general method for the manufacture of thermosetting coatings. The specific manufacturing process needs to be adjusted and optimized according to the product type and requirements. At the same time, in order to ensure the quality and performance of thermosetting coatings, the following points need to be paid attention to:

1. Strictly control the quality and proportion of raw materials to ensure that the various indicators of the coating meet the requirements;
2. In the process of mixing, stirring and grinding and dispersion, It is necessary to keep the equipment clean and sealed to avoid impurities and pollution;
3. When adjusting the pH value, it is necessary to pay attention to control the dosage and adding speed, avoid excessive adjustment or uneven adjustment of the situation;
4. packaging storage need to choose the appropriate container and storage conditions, to avoid leakage and deterioration and other issues.

In short, the manufacture of thermosetting coatings requires strict control of the process parameters and quality indicators of each link to ensure that the quality and performance of the coatings meet the requirements. At the same time, it is also necessary to continuously explore and improve the manufacturing process, improve production efficiency and quality stability, and contribute to the development of chemical production raw materials.

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