How to verify the long-term stability of high-voltage resistor paste through testing?

As an important material in the electronics industry, the long-term stability of high-voltage resistor paste directly affects the performance and lifespan of electronic products. This article will be presented by Advanced Institute (Shenzhen) Technology Co., LtdResearch Platinum YB5309 High Voltage Resistance SlurryFor example, introduce how to verify its long-term stability through a series of testing methods.

1、 Viscosity test

Viscosity is one of the important indicators for measuring the fluidity and coating performance of slurry. By measuring the viscosity changes of the slurry, its stability can be preliminarily evaluated.

• Testing method: Use a rotary viscometer or a through type viscometer to measure the viscosity of the slurry at a standard temperature (such as 25 ℃).
• Testing frequency: It is recommended to conduct testing at regular intervals (such as monthly), record data, and compare changes.
• Data example: The initial viscosity of YB5309 high-voltage resistor paste from Yanbo brand is 150 Pa · s. After 6 months of storage, the viscosity changes to 148 Pa · s, with a small amplitude of change, indicating that it has good stability.

2、 Settlement test

The settling test is used to evaluate the settling velocity of particles in the slurry. By observing the settling of particles under static conditions, the stability of the slurry can be understood.

• Testing method: Place the slurry in a settling tube and record the settling distance of particles within a certain period of time (such as 24 hours).
• Data example: The settling distance of YB5309 high-voltage resistor paste from Yanbo brand is less than 1 centimeter within 24 hours, indicating that its particles are evenly dispersed and stable.

3、 Centrifugal testing

Centrifugal testing simulates the behavior of slurry under high centrifugal force conditions to evaluate its stratification and precipitation.

• Test method: Use a centrifuge to centrifuge the slurry at a set high speed for a period of time (such as 30 minutes), and observe the stratification and precipitation of the slurry.
• Data example: After centrifugal testing, the YB5309 high-voltage resistor paste from Yanbo brand did not show obvious layering or precipitation, indicating its good stability.

4、 Heating test

Heating test is used to evaluate the stability of the slurry under high temperature conditions. By heating the slurry and observing its changes, its thermal stability can be understood.

• Testing method: Place the slurry on a hot box or hot plate, heat it to a certain temperature (such as 85 ℃), hold it for a certain time (such as 2 hours), and observe the changes in the slurry.
• Data example:Research Platinum YB5309 High Voltage Resistance SlurryAfter heating at 85 ℃ for 2 hours, there was no significant change in appearance and viscosity, indicating that it has good thermal stability.

5、 Solid content testing

The solid content test evaluates the stability of the slurry by measuring the content of solid components in it.

• Testing method: Place the slurry in a container and take samples at regular intervals to measure the solid content.
• Data example: After standing for 3 months, the solid content of YB5309 high-voltage resistor paste from Yanbo brand increased from the initial 95% to 94.8%, with a small change amplitude, indicating good stability.

6、 Electrical resistivity test

The resistivity test can reflect the distribution state of the conductive agent in the slurry, thereby evaluating its dispersion effect and stability.

• Testing method: Apply the slurry evenly onto the insulating film, heat and dry it, and measure the resistivity of the coating.
• Data example: The resistivity of YB5309 high-voltage resistor paste from Yanbo brand remained stable within a certain range after coating, without significant fluctuations, indicating good dispersibility and stability.

7、 Zeta potential test

Zeta potential is an important indicator for characterizing the stability of colloidal dispersion systems, and measuring Zeta potential can evaluate the stability of the slurry.

• Test method: Use a Zeta potential analyzer to measure the Zeta potential of the slurry.
• Data example: The absolute value of Zeta potential of YB5309 high-voltage resistor paste from Yanbo brand is relatively high, indicating that its dispersion system is stable and not prone to agglomeration or agglomeration.

conclusion

Through the above series of testing methods, the long-term stability of high-voltage resistor paste can be comprehensively evaluated.Research Platinum YB5309 High Voltage Resistance SlurryIt has shown good stability in various tests and is suitable for the manufacturing of electronic products such as high-voltage resistors and high-voltage focusing potentiometers. In practical applications, it is recommended to choose appropriate testing methods and frequencies based on specific needs and conditions to ensure the stability of the slurry and product quality.
The above data is for reference only, and specific performance may vary due to production processes and product specifications.