‌The production formula and process flow of PU color paste mainly include the following steps:

1. Material preparation:

Base materials: mainly include polyurethane resin, solvents (such as acetone, methanol, ethanol), diluents (such as butanol), and additives (such as dichloromethane, isopropanol, glass particles, rare earth pigments).

Pigments: including white pigments (such as titanium dioxide, zinc oxide), black pigments (such as carbon black), and colored pigments (organic pigments, inorganic pigments).

Additional agents: coloring agents (such as benzyl acetate, butyl acetate, dyes), anti settling agents (such as polyvinyl alcohol)

2. Production process:

Measurement and feeding: Accurately measure each raw material according to the formula ratio and add them separately to the reaction kettle.

Mixing and Mixing: Start the mixing equipment and thoroughly mix the raw materials in the kettle until they reach a uniform state.

Reaction: Control the reaction temperature and time to promote chemical reactions of various raw materials, forming polyurethane resin.

Filtering: Filter the reacted coating to remove impurities and particles.

Dispersion: Add the pigment to the filtered coating and perform dispersion treatment to evenly disperse the pigment in the coating.

Coloring: Add colorants or dyes as needed and adjust the color to obtain the desired color.

Grouting: The colored paint is processed by high-speed cutting equipment to make the pigment more delicate.

Adjust viscosity: Adjust the viscosity of the coating by adding diluents or thickeners according to the needs of the coating.

Testing and Adjustment: Conduct quality tests on the prepared PU color paste, including viscosity, drying time, wear resistance, and other indicators, and make necessary adjustments based on the test results.

Packaging and Storage: Pack the debugged PU color paste and store it in a suitable container for easy transportation and use

3. Quality control and testing:

Accurate ingredients and quality control: Ensure that raw materials are added in proportion to guarantee product quality. Conduct quality inspections on raw materials to ensure there are no impurities or non-conforming products. Record the raw material information of each batch of products for traceability and quality control purposes

Testing and adjustment: Conduct quality testing on the prepared PU color paste, including viscosity, drying time, wear resistance, and other indicators, and make necessary adjustments based on the test results

Through the above steps, PU color paste with good wear resistance, yellowing resistance, and weather resistance can be produced.