The protection of the environment, the sustainable development of the economy, and environmental protection have been valued by all industrial countries in the world. As an environmentally friendly coating, water-based coatings are being used more and more widely. Aiming at the improvement of production efficiency and quality of water-based coatings, Chen Pinlei conducted research on water-based coating dispersion technology and equipment. The current status of high shear homogenizers, research on water-based coating dispersion technology, including the comparison of traditional dispersion equipment (such as high-speed dispersers, Grinders, etc. ) and high shear equipment. Furthermore, the conventional dispersing effect of the high shear device on the paint, the research on the cavitation dispersion effect of the high shear device, and the engineering application research are analyzed.
Summary: 1. The dispersion of pigments and fillers in water requires extremely strong shearing force or other mechanical external forces. Ordinary high-speed dispersing machines cannot provide high-strength mechanical external forces, and the working mode of the grinding machine determines its low production efficiency. Decentralization faces the contradiction that quality and efficiency cannot be balanced. The use of high-shear devices to disperse them can theoretically solve the above problems.
2. Cavitation is a very critical dispersion effect in high shear dispersion devices.
3. The speed of the impeller and rotor is the most critical factor affecting the cavitation effect.
4. In the actual application process of the high-shear dispersing device, it is necessary to design a dispersion solution for different types of materials according to the characteristics of the water-based coating itself and the requirements of the manufacturing process.
