JY/T 0590-2020 "General Rules for swirl/spin Rheometer Measuring method" specifies the principle, instrument requirements, environmental conditions, Sample Handling, operation steps, data reporting and safety precautions for the measurement of rheological properties of solids and liquids (such as solutions, melts, etc.) using swirl/spin Rheometer. The standard applies to the measurement of rheological properties of swirl/spin Rheometer using various measurement rotor systems. Terms and definitions refer to GB/T 2035-2008, which covers related terms such as Rheometer, rheological measurement method, steady-state rheological test, dynamic rheological test, etc., and describes in detail the technical methods for measuring rheological functions such as viscosity, storage modulus, loss modulus, and mechanical loss under different conditions.