Coating viscosity and influencing factors-A

2020-12-02

Most of the technical indicators of coatings clearly regard viscosity as an important routine testing indicator, which specifies the production range and use range of coating viscosity. This is not only to make the quality of the paint relatively stable, but more importantly, to make the comprehensive properties of the paint film after construction, such as adhesion and decoration, meet the requirements. The viscosity of the coating has a major impact on the coating performance and is an important process control parameter for many coating methods such as spraying. In the spraying process, it is necessary to choose the appropriate viscosity paint. Paints with too high viscosity are not easy to atomize, which will cause paint film defects such as dry spray, orange peel, pinholes, etc.; if the viscosity is too low, the spray volume will increase, but it is easy to cause sagging and other defects.


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