| 摘要 |
A low energy coating composition for use in jacketed autoclaves comprises fluoropolymer granules, a curing agent and a thermosetting liquid epoxy resin. The composition may be prepared by dispersing the fluoropolymer in a solvent, adding the curing agent and mixing, the solvent is removed by heating and the resulting fluoropolymer and curing agent are added to the liquid epoxy resin with stirring. The coating may be applied to the substrate surface of an autoclave and cured at 90°C for between 4 and 16 hours. The substrate may be preheated to the required temperature prior to the application of the coating. Preferred components are PTFE for the fluoropolymer (MW 30005/mol, mean diameter 4µm), IPA for the solvent, triethylene tetra amine (TETA) for the curing agent, and a liquid epoxy resin derived from unfilled bisphenol A and epichlorohydrin. Use of the coating substantially reduces the fouling of the interior walls through wax deposits. |
