Is fiberglass resistant to strong alkalis?
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I would like to ask the experts: Is fiberglass resistant to strong alkalis?
Is it possible to use a fiberglass tank made of epoxy resin for storing 35% caustic soda at 100°C? Thank you
Fiberglass is a composite material composed of glass fibers (inorganic non-metallic materials) and plastic (organic non-metallic materials) in a certain proportion. In English, it is often referred to as Fibre Glass. If resistance to strong corrosion (from strong acids and alkalis) is required, the manufacturer of fiberglass products can be asked to select appropriate resins and fiber materials.
Thank you, Tonglin Niao-ENE! I am looking for a material that can withstand 5% sulfuric acid at room temperature, and 30-40% caustic soda at 95-100°C. What material would be suitable for this purpose? It needs to be economical and durable. Thank you!
Vinyl resin can meet your requirements, but when choosing the inner layer, be sure to opt for organic felt
It is recommended that the poster use PP polypropylene storage tanks
Economical and durable using pure polypropylene or reinforced polypropylene
Using epoxy resin under the conditions you mentioned is not suitable, because although epoxy resin can resist both acids and bases, the temperature at which it is used is too high; it cannot withstand such high temperatures. Its maximum operating temperature is generally fine at 80 degrees Celsius, but it cannot be used for extended periods at 100 degrees Celsius – short-term use is possible. Epoxy resin can tolerate the concentration of strong bases you mentioned
I agree with cailong123’s suggestion. If the original poster thinks the strength of the PP tank is not sufficient, a composite tank made of PP as the lining and reinforced with fiberglass could be used.