Graphite powder has high conductivity. The conductivity of graphite powder is an important factor of conductive graphite powder. There are many factors affecting the conductivity of conductive graphite powder, such as the ratio of graphite powder, external pressure, environmental humidity, humidity and even light, usually can be used to measure the conductivity of graphite powder in the following ways:
1, voltammetry resistance measurement
Specific method: use precision range small electric quantity measurement scale, or resistance multimeter measurement contrast test you use a small bulb, according to the brightness of his conductivity, if the lamp gun is brighter, the resistance is smaller.
2. The conductivity of conductive graphite powder is measured by resin method
Buy some conductive paint resin, add the same amount of conductive graphite powder, apply it to a board and measure its conductivity with a digital multimeter.
3. Some other factors for measuring the resistivity of conductive graphite powder
Conductivity will change with external factors, and more sensitive. Early microphones were made of graphite powder, because the electrical conductivity between the graphite particles changed by the vibration of the sound, changing the current to produce an analog signal. As you can imagine, you need to measure his conductivity in an experimental environment.
The conductive effect of graphite powder is an important factor to make conductive products, so it is very important to measure the conductivity of graphite powder.
Post time: Oct-22-2021