How to test whether the thermal conductive silicone sheet is resistant to high temperature

Thermally conductive silicone sheets are often used in the heat conduction and heat dissipation of electronic products. They have excellent thermal conductivity and can maintain excellent stability under high temperature, acid and alkali conditions. How to test whether the thermally conductive silicone sheets really have high temperature resistance?

The commonly used method to test whether the thermally conductive silicone sheet is resistant to high temperature is a simple aging test. The important goal of this test is to see how the silicon molecule volatilizes the thermally conductive silicone sheet at high temperature. The specific methods are as follows:

1. Select 10 samples and place them in a drying oven at 35 ℃ for 80--100h

2. Put the sample into the oven at 200℃ and dry it continuously for 200h

3. Take out the sample and place it in a drying oven at 35 ℃ for 80--100h

4. Separately and accurately weigh the weight G1 of 10 samples

5. Separately and accurately weigh the weight G2 of the 10 samples again.

6. Design component loss: (G1-G2)/G1×100%

Judgment scale:

1. The component loss is less than 1%

2. All chemical and physical properties are stable after high temperature

Through the above test steps, you can probably judge the high temperature resistance of a thermally conductive silicone sheet, and provide more reference for choosing a suitable thermally conductive silicone sheet.