Is silicone rubber resistant to acetic acid corrosion?
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There is a device that uses cylindrical glass viewports; the pressure is 1.3 MPa, the medium is acetic acid, and the temperature is 180 degrees. Metal wound gaskets are used, but the viewports keep breaking. If silicone rubber is applied, the pressure test can be passed, but it is not known whether silicone rubber can resist corrosion by acetic acid. I would appreciate expert advice on whether there are any better cushions available
Silicone rubber possesses excellent properties such as heat resistance, cold resistance, dielectric properties, ozone resistance, and resistance to atmospheric aging. Its standout feature is its wide operating temperature range, allowing it to be used over extended periods at temperatures ranging from -60°C (or lower) to +250°C (or higher). However, silicone rubber has poor mechanical properties such as tensile strength and tear resistance; at room temperature its physical and mechanical properties are inferior to those of most synthetic rubbers. Moreover, aside from nitrile silicone and fluorosilicone rubbers, ordinary silicone rubbers have poor resistance to oils and solvents. Therefore, silicone rubber is not suitable for use in ordinary conditions, but it is highly appropriate for many specific applications. It is worth noting that in biomedical engineering, polymer materials play a very important role. Silicone rubber is a particularly important type of medical polymer material; it possesses excellent physiological inertness, is non-toxic, odorless, non-corrosive, anticoagulant, and has good biocompatibility with the body. It can also withstand harsh disinfection conditions. It can be processed into tubes, sheets, films, and custom-shaped components as needed, and can be used in medical devices, artificial organs, etc. Today, there is specialized medical-grade silicone rubber available both domestically and internationally.
The second floor only discussed the many excellent properties of silicone rubber but did not answer whether it can resist acetic acid corrosion. Thank you!
It won’t work; it’s 180 degrees. Use a PTFE gasket directly; placing one on each side of the lens will prevent it from breaking. Tetrafluoride can handle 200 degrees without issue