Physical properties of alcohol solution based on temperature-controlled ultrasonic grating

The ultrasonic grating method, known for its advantages of requiring a small amount of liquid and high measurement accuracy, is commonly used for detecting the physical properties of transparent liquids. However, this method often results in significant measurement errors for alcohol-based associated liquids, such as ethanol, which are sensitive to temperature changes due to variations in the detection environment. To address this issue, this paper proposes a new method: temperature controllable ultrasonic grating method. This method can prevent the evaporation of alcohol and, by using the controlled variable method, investigates the relationship between sound speed and temperature, thereby deriving the relationship between elastic modulus and temperature. Experimental results show that the sound speed and elastic modulus of 23%-41% alcohol solutions decrease monotonically in the temperature range of 10°C-40°C, with reductions of approximately 160 m/s and 20 MPa, respectively. This study reflects the properties of alcohol-based associated solutions, represented by ethanol, and has certain guiding significance for medical ultrasound imaging and hydrodynamic modeling.