Does 32% NaOH cause corrosion to PE at 40 and 50 degrees?
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Does 32% NaOH cause corrosion to PE at 40 and 50 degrees? Is the corrosion severe? Are tanks with a steel lining and PE easy to install?
At such temperatures, there is no corrosion to PE. But if it is a lining, the strength of the lining layer needs to be taken into consideration, as the adhesion between polyethylene and any other material is very weak.
Polyethylene is not resistant to oxidizing acids (such as sodium hydroxide), right? Newcomer’s speech practice* Please bear with us
Reply to 1# orange1984: Does 32% NaOH cause corrosion to PE at 40 and 50 degrees? Is the corrosion severe? Are tanks with a steel lining and PE easy to install? Under these operating conditions, PE is corrosion-resistant; however, with a steel-lined PE design, attention must be paid to the quality of PE layer construction, and equipment reliability also needs to be considered. Generally, issues such as cracking in the PE layer occur after 3–5 years. When moving tank containers, it is recommended to use 304L stainless steel; the cost increase is not significant, but corrosion resistance and reliability are **improved, with the equipment’s service life typically exceeding 10 years.