The viscosity of a hot melt can affect its flow and spreadability. Measuring the viscosity of hot melt can help manufacturers determine its fluidity and spreadability, so as to ensure that hot melt can be evenly coated on the surface of objects to achieve better adhesion. The viscosity of the hot melt also affects key parameters such as its bond strength, viscosity stability, and melting point. Measuring the viscosity of hot melts can help manufacturers control these parameters, thereby ensuring consistent and reliable hot melt quality.
Measurement steps
Rotational viscometer is a commonly used viscosity testing equipment, which can be used to measure the viscosity of liquid under force. In the preparation and application of hot melt, viscosity is a very important parameter, because it directly affects the performance and application effect of hot melt. Therefore, the Rotational Viscometer is also widely used in the detection of hot melt viscosity.
The following is a general procedure for hot melt viscosity testing using a Rotational Viscometer:
Prepare samples: Prepare the hot melt samples to be tested, and perform necessary preparation and mixing as required.
Prepare the sample: Put the prepared hot-melt sample into the hot-melt glue gun, melt it and inject it into the measuring chamber of the Rotational Viscometer.
Adjust the Rotational Viscometer: According to the type and requirements of the Rotational Viscometer used, make relevant adjustments, including selecting the rotational speed, selecting a suitable measuring head, etc.
Measure the sample: operate according to the equipment manual, and start the Rotational Viscometer for measurement. During the measurement process, the sample can be heated and cooled as needed to simulate the actual application situation.
Record the results: During the measurement, the Rotational Viscometer will display the measurement results, including the viscosity value and other relevant parameters. After the measurement is completed, these results are recorded and analyzed and compared as necessary.
NBCHAO reminds you: When using a Rotational Viscometer for hot melt viscosity testing, strict safety operating procedures should be followed to ensure the safety of operators and samples, and operations should be performed in accordance with relevant quality standards and regulations. At the same time, it is also necessary to control the temperature of the sample and other factors, so as not to cause too much interference to the accuracy and reliability of the test results.
