Epoxy resin operating temperature
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Can epoxy resin be used for a long time at 100 degrees?
High-temperature resistant epoxies can even be used at 190 degrees with no problem
True epoxy resins cannot withstand such high temperatures; what is mentioned are modified versions. Be careful, my friend!
This is closely related to the curing system; generally, systems that cure at high temperatures require higher operating temperatures, while those that cure at low temperatures require lower ones. Of course, this is just a general rule.
It is possible, but the Tg varies depending on the curing system
There are many types of epoxy resins: glycidyl ethers, glycidyl esters, glycidyl amines, linear aliphatic types, and alicyclic types. Epoxy resins inherently do not have very high temperature resistance, but by adding different curing agents, their temperature resistance can be **improved**. Epoxy resins of the trihydroxyphenylmethane type, for example, have a heat deformation temperature of over 260 degrees, allowing them to be used at high temperatures for extended periods of time. Generally, incorporating rigid groups such as benzene rings or heterocycles into the structural design can **improve temperature resistance; however, this also affects other properties of the epoxy resin, such as its toughness.
Epoxy resins brominated with high Tg can reach 190°C, and the degree of heat resistance varies depending on the curing system used.
It depends on the Tg value of the curing system..