Evaluating Moisture Resistance of Thermal Conductive Silica Gel Pads

Labthink C330H Water Vapor Transmission Rate Test System supports this test

Moisture resistance is vital for the lifespan and performance of electronic devices. Thermal conductive silica gel pads fill gaps between heat sources and radiators, but their water vapor barrier properties can impact how much moisture reaches the electronics.

The test follows ISO 15106-3:2003, which uses an electrolytic sensor method to determine water vapor transmission rate.

Labthink C330H Water Vapor Transmission Rate Test System is used. This system separates a chamber into high and low humidity sections. Nitrogen gas carries water vapor through the sample from the high humidity side to the low humidity side. An electrolytic cell with phosphorus pentoxide detects the water vapor and calculates the transmission rate.

The result showed that the average water vapor transmission rate for the tested brand of thermal conductive silica gel pad was 8.044 g/(m²·24h), indicating good moisture resistance.

In Conclusion, this test method along with the test instrument provides a simple and accurate way to assess the moisture resistance of thermal conductive silica gel pads, helping to choose the right pad for electronic

device protection.

C330H Water Vapor Transmission Rate Test System

C330H Water Vapor Transmission Rate Test System, is designed and manufactured based on the electrolytic sensor method and conforms to the requirements of ISO 15106-3. This instrument can be used to measure the water vapor transmission rate of barrier materials with high and medium moisture barrier properties with a wide testing range and high testing efficiency. The instrument is featured with patented design of integrated block consisting of 3 test cells. Equipped with high precision sensors and professional computer-controlled system, the instrument can regulate and control the temperature, humidity and flow rate precisely, guaranteeing the testing sensitivity and repeatability of test results.