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yungman
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What is the conductivity of epoxy when dry? Also is there any expansion or contraction when epoxy cure? That is if you fill epoxy in a gap, would it pull or push the two side when dry?
Thanks
Thanks
Studiot said:Here's some choice.
CPC-Farnell are also in the US
You can get datasheets on any potting compound from them
http://uk.farnell.com/jsp/search/br...Ntt=potting+compound&Ntx=mode+matchallpartial
Epoxy conductivity refers to the ability of epoxy resins to conduct electricity. This is achieved by incorporating conductive fillers such as carbon, metal, or graphite into the epoxy mixture. The conductivity of epoxy can be tailored by adjusting the type and amount of filler used.
Epoxy expansion and contraction can have a significant impact on its performance. These changes occur due to temperature fluctuations and can cause stress on the epoxy structure, leading to cracking or delamination. It is essential to consider the coefficient of thermal expansion when selecting an epoxy for a specific application.
The conductivity of epoxy can be influenced by several factors, such as the type and amount of conductive filler used, the curing process, and the environment. Higher filler content and a more thorough curing process can increase the epoxy's conductivity, while exposure to moisture or temperature changes can decrease it.
Epoxy conductivity is typically measured by its resistance to electrical current. The lower the resistance, the higher the conductivity. This can be measured using a multimeter or specialized equipment such as a four-point probe. The measurement is usually expressed in ohms per square inch (Ω/in²) or ohms per cubic inch (Ω/in³).
Conductive epoxy has a wide range of applications, including electronics, aerospace, automotive, and medical industries. It is commonly used for bonding and encapsulating electronic components, creating conductive traces on circuit boards, and shielding electronic devices from electromagnetic interference. It is also used in the production of sensors, batteries, and fuel cells.