Test methods for antistatic shoes
Anti-static shoe test
Our customers usually buy a sample shoe and take it to the testing department for testing before ordering anti-static shoes in bulk. Below I have prepared the following detection methods for you.
Preparation of test samples
A. Sample preparation
Clean the surface of the tested shoe sole with ethanol. Wash the soles with distilled water and allow to dry according to the specified conditions. It is forbidden to use organic substances that will corrode the soles and swell and deform. The surface of the sole should not be worn, and a conductive layer with an area of 180*40MM should be placed on the cleaned sole and dried under the specified environmental conditions.
Measurement of the resistance value of conductive coatings.
The device for measuring the resistance value of the conductive coating consists of three conductive metal pillars, and the radius of the top of the metal pillars is 3MM±2MM. Among them, the distance between two sides and three columns is 35MM±0.2MM. and connected with metal wires. The third column is 160MM±5MM away from the midpoint of the connection between the other two columns, and is insulated from the other two columns.
Place the shoes coated with the conductive layer on the specified metal posts. The forefoot part of the shoe is placed on two pillars with a distance of 35MM, the heel part is placed on the third pillar, and all three pillars must be in contact with the conductive coating. Then use the specified test instrument to measure the resistance between the front two-sided three-pole column and the third column, and measure the circuit principle measurement result, the resistance value must be less than 1KΩ.
Anti-static shoes test conditions
Environmental requirements: temperature 20 ℃ ± 2 ℃; relative humidity: 30% ± 3%.
A. Place the test sample under the specified environmental conditions for more than 24 hours.
B. If the test cannot be carried out in the specified environment, the test must be completed within 5 minutes after the test sample is removed from the environment.
Anti-static shoes test steps
Fill the test shoes with steel balls according to the regulations (if the height of the upper is not enough to fit all the conductive steel balls, the height of the upper can be increased with insulating materials). Put the test sample of the loaded steel ball on the specified outer electrode, and connect the specified DC power supply between the inner and outer electrodes for 1min. Measuring circuit principle.
Record or calculate the voltage value and current value after reaching the specified time.