Not all plastics can resist to hydrofluoric acid etching:

Polychlorotrifluoroethylene (PCTPE, F-3), perfluorinated ethylene propylene (FEP, referred to as the F-46) are corrosion resistant to hydrofluoric acid

Polyethylene (PE) excellent corrosion resistance, non-oxidizing acid (hydrochloric acid, sulfuric acid, hydrofluoric acid, etc.), dilute nitric acid, alkali and salt solution with good corrosion resistance.

PTFE can resist the corrosive effects and strong oxidizing medium. It is resistant to fuming sulfuric acid, concentrated nitric acid, concentrated hydrochloric acid, hydrofluoric acid, boiling sodium hydroxide, hydrogen peroxide, chlorine and even in aqua regia etching.

The present invention discloses a double semi-rigid plastic sheet acid tank rubber lining. The adhesive agent attached to the tank wall full by vulcanization. Its adhesive, primer and rubber surfaces, respectively, smoked sheet as the main raw material, in parts by weight were added sulfur powder, magnesium oxide, clay, calcium carbonate , turpentine iron oxide, talc and accelerators, anti-aging agent materials, kneading, refined into heat. Such semi-rigid plastic sheet rubber lining, not only corrosion resistance, heat resistance temperature is 40 ℃, brittle temperature is -70 ℃, and medium resistance to impact and friction tank, not only adapt to a single medium, and It applies to sulfuric acid, hydrochloric acid, hydrofluoric acid containing mixture.