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Painting & Coating
The function of UF used in ED coating process
Ultrafiltration (UF) is a pressure driven membrane separation process that uses a specific porous membrane separation method. The pore size of the membrane is 10-3-10-2 μ m, which can intercept and block suspended pigments and high molecular weight resins (with a molecular weight greater than 5000) in the working fluid, while allowing water, organic solvents, inorganic ions, and low molecular weight resins in the working fluid to pass through the membrane. The amount of material that the diaphragm passes through, known as the \"UF\" liquid, is called the transmittance, measured in L/m2. h. Within a certain pressure range, the transmittance is related to the solid content of the working fluid, temperature, and membrane flow rate. Another major performance of ultrafiltration membranes is their retention capacity, which represents the ability of UF membranes to retain substances of high molecular weight, usually expressed in terms of solid retention rate.
The reason for applying ultrafiltration technology in electrophoretic coating process is:
1. Implement a \"closed loop\" cleaning method after electrophoresis to improve the utilization rate of the coating;
2. Reduce the amount of dirt in the rinsing water, decrease the amount of wastewater discharged and the cost of treatment, which is beneficial for environmental protection;
When the conductivity of the working fluid is high, drain the UF solution, add pure water, remove impurities and ions from the working fluid, purify the working fluid, and improve the appearance quality of the coating.
dgkede
2025-12-11
The function of UF used in ED coating process
Ultrafiltration (UF) is a pressure driven membrane separation process that uses a specific porous membrane separation method. The pore size of the membrane is 10-3-10-2 μ m, which can intercept and block suspended pigments and high molecular weight resins (with a molecular weight greater than 5000) in the working fluid, while allowing water, organic solvents, inorganic ions, and low molecular weight resins in the working fluid to pass through the membrane. The amount of material that the diaphragm passes through, known as the \"UF\" liquid, is called the transmittance, measured in L/m2. h. Within a certain pressure range, the transmittance is related to the solid content of the working fluid, temperature, and membrane flow rate. Another major performance of ultrafiltration membranes is their retention capacity, which represents the ability of UF membranes to retain substances of high molecular weight, usually expressed in terms of solid retention rate.
The reason for applying ultrafiltration technology in electrophoretic coating process is:
1. Implement a \"closed loop\" cleaning method after electrophoresis to improve the utilization rate of the coating;
2. Reduce the amount of dirt in the rinsing water, decrease the amount of wastewater discharged and the cost of treatment, which is beneficial for environmental protection;
When the conductivity of the working fluid is high, drain the UF solution, add pure water, remove impurities and ions from the working fluid, purify the working fluid, and improve the appearance quality of the coating.
dgkede
2025-12-03
KODEST- Got a comprehensive physical performance testing systerm
KODEST, We have a complete physical testing laboratory to test the various physical properties of coatings.
Including the uniformity, flatness, and smoothness of the coating film, as well as the hardness, adhesion, corrosion resistance, impact resistance, and permeability of the electrophoretic coating film. so can provide more specific analysis of the product.
dgkede
2025-11-17
Kodest Technology has a first-class R&D team in China and has established industry university research
cooperation mechanisms with multiple universities, committed to promoting the development of surface
coating technology towards a more environmentally friendly, economical, and energy-saving direction.
After nearly a decade of development, the Engineering Technology Center has cultivated a group of
technical elites in the coating industry, forming a sustainable talent pool；The center currently has over 50
researchers, of whom 80% have a bachelor\'s degree or above, and 10% have a doctoral or master\'s degree；And
plan to add multiple technical talents with master\'s degrees or above within the planned three years, and
establish postdoctoral research workstations.
The company regularly hires senior professionals in the painting
industry and has established a team of technical expert consultants with senior professional titles.
dgkede
2025-10-27
REPORT