The conductivity of graphite powder is an important factor in making conductive products, so it is very important to measure the conductivity of graphite powder. The conductivity of graphite powder is an important factor of graphite powder conductive products. There are many factors that affect the conductivity of conductive graphite powder, such as the ratio of graphite powder, external pressure, environmental humidity, humidity and even light. Generally, the following methods can be used to measure the conductivity of graphite powder:
1. Measure the conductivity of conductive graphite powder by resin method.
Buy some resin for conductive paint, add the same amount of conductive graphite powder, and then coat it on a board to measure its conductivity with a digital multimeter.
2. Some other factors for measuring the resistivity of conductive graphite powder.
Conductivity will change with external factors, and it is sensitive. Early microphones were all made of graphite powder, because the vibration of sound changed the conductivity between graphite powders, so as to change the current and generate analog signals. It is conceivable that you need the experimental environment requirements for measuring his conductivity.
3. Voltammetric resistance measurement
Specific method: Use a small electric meter with a precise measuring range or a resistance multimeter to measure the contrast test. You can use a small bulb to see its conductivity according to the brightness. If the bulb is brighter, the resistance is smaller.
Post time: Nov-28-2022