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Moisture Resistance Testing of Thermal Conductive Silica Gel Pads

Thermal conductive silica gel pads, crucial components in electronic devices, require effective moisture resistance to ensure optimal performance and longevity. This article delves into a comprehensive testing method for evaluating the water vapor transmission rate (WVTR) of these pads.


Electronic components are sensitive to moisture, which can lead to corrosion, short circuits, and reduced reliability. Thermal conductive silica gel pads, often used to facilitate heat dissipation between electronic chips and radiators, play a vital role in preventing moisture ingress. Their moisture resistance properties directly impact the protection of sensitive internal components.

The electrolytic sensor method, a widely recognized standard, is employed to measure the WVTR of thermal conductive silica gel pads. This technique involves creating a controlled environment with a high humidity chamber on one side and a low humidity chamber on the other. A sample of the thermal conductive silica gel pad is placed between these chambers. Water vapor diffusing through the pad is then quantified by measuring the electrolytic current generated as the vapor is absorbed and electrolyzed within a specialized cell.


The C330H Water Vapor Transmission Rate Tester, developed by Jinan Labthink Instruments Co., Ltd., is a sophisticated instrument designed for WVTR testing. It offers precise control over temperature, humidity, and gas flow rates, ensuring accurate and reliable results. The system's user-friendly interface simplifies the testing process, making it accessible to researchers and quality control professionals.

By accurately measuring the WVTR of thermal conductive silica gel pads, the electrolytic sensor method provides valuable insights into their moisture resistance properties. The C330H test system offers a reliable and efficient means of conducting these tests, ensuring the quality and performance of electronic devices. Understanding the moisture resistance characteristics of these pads is essential for selecting appropriate materials and designing effective moisture barriers in electronic applications.

As the demand for functional packaging materials grows, testing methods are evolving to ensure a more comprehensive evaluation of packaging films. Labthink encourages collaboration with packaging industry companies for quality control! Visit the website www.labthink.com to learn more!

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