Polyacrylamide is widely used as a thickener in oils, paints, plastics, cosmetics and other fields. Its viscosity varies significantly with concentration, and it usually exhibits Newtonian fluid behavior at lower concentrations, but exhibits non-Newtonian behavior at higher concentrations. In order to accurately evaluate its properties, it is necessary to measure its viscosity.
The NDJ-8S Digital Display Rotational Viscometer meets this need. The instrument adopts a high-resolution color screen display, which can directly display viscosity, speed, temperature and other parameters, and supports a variety of measurement modes and data storage functions. For polyacrylamide, a low-viscosity, non-Newtonian fluid, NDJ-8S has excellent sensitivity and repeatability.
Procedure for polyacrylamide viscosity determination
First of all, the preparation phase includes selecting the appropriate rotor (usually rotor No. 4) and ensuring that the equipment is functioning properly, checking that the interface connections are tight. The polyacrylamide sample is then diluted to the appropriate concentration and loaded into the instrument, taking care to avoid air bubbles affecting the test results.Next, set the speed range (0.6 rpm or 1.2 rpm is recommended) and set the necessary parameters such as temperature compensation values. Start the instrument to measure, automatically collect data and display the viscosity value at the current rotational speed. Once you've finished taking a measurement, view the recording or print the results for analysis.Finally, the absolute viscosity or apparent relative viscosity of the sample was calculated based on the measurement data combined with temperature and rotational speed information, and the non-Newtonian behavior of polyacrylamide was verified by comparing the data changes at different concentrations.
Advantages of polyacrylamide viscosity determination
High-precision measurements
The NDJ-8S has a measurement accuracy of ±2%F.S, which can accurately capture the trend of polyacrylamide viscosity with concentration.
Wide range of applicability
The measuring range of the instrument covers up to 2×10^6 mPa·s, which is perfectly suitable for the testing needs of polyacrylamide, a high-viscosity material.
Flexible mode of operation
The NDJ-8S supports curve measurement and recording functions, which is convenient for long-term experimental data archiving and analysis.
Human-computer interaction friendly
The instrument interface is intuitive, and data is stored via USB or RS232 for easy data analysis and reporting.
For polyacrylamide, a fluid with low viscosity but non-Newtonian properties, the NDJ-8S Digital Rotational Viscometer is an efficient and reliable measurement tool. Through its high accuracy, wide range and user-friendly characteristics, it can help researchers or production managers quickly and accurately obtain the viscosity data of samples, so as to ensure product quality and compliance with technical indicators.It is recommended to adjust the rotational speed and parameter settings according to the specific sample characteristics before actual use to obtain better test results.
