How to test the aging resistance of thermal silica film?

Today, let’s learn how to test the aging resistance of thermal conductive silicone sheet? Introduction to the anti-aging method of thermal silica film. Aging refers to the change in appearance or product performance caused by radiation or influence of different conditions such as light and temperature. So what does it mean that the thermal conductive silicone sheet is resistant to aging? The aging resistance of thermally conductive silicone sheet, that is, weathering resistance, is a popular term to guide thermal silicone sheet to withstand the influence of these different conditions. There are a variety of design ideas for the aging test of thermally conductive silicone sheets. The method introduced this time is called the rapid temperature test method.

The test instrument of this method: rapid temperature change damp heat test box; test conditions: temperature 26℃, humidity 42%RH.

Introduction to the aging resistance test index and process flow of thermal conductive silicone sheet

1. Test the initial parameters of the thermally conductive silicone sheet: thermal conductivity, hardness, tensile strength, withstand voltage, volume resistance, flame retardant grade, etc.;

2. Rapid temperature repeated impact: Keep the tested thermally conductive silicone sheet at a low temperature of -40°C for 30 minutes, and quickly increase the temperature to 120°C and keep it for 30 minutes, so as to continuously impact 500 cycles;

3. Take out the thermal conductive silicone film and place it at room temperature for 30 minutes. Test the parameters of the thermal conductive silicone film after impact: thermal conductivity, hardness, tensile strength, withstand voltage, volume resistance, flame retardant grade, etc., and make the initial parameter values Quantitative comparison and analysis;

4. Based on the quantitative comparison and analysis, the service life of the thermally conductive silicone sheet is inferred.

Through the above test steps, it is possible to judge the aging resistance of a thermally conductive silicone sheet, which provides more reference for choosing a suitable thermally conductive silicone sheet.