{"id":1316,"date":"2024-11-21T14:25:41","date_gmt":"2024-11-21T14:25:41","guid":{"rendered":"https:\/\/peflon.com\/ptfe-vs-pfa\/"},"modified":"2024-11-21T14:25:41","modified_gmt":"2024-11-21T14:25:41","slug":"ptfe-vs-pfa","status":"publish","type":"post","link":"https:\/\/peflon.com\/es\/ptfe-vs-pfa\/","title":{"rendered":"PTFE VS PFA"},"content":{"rendered":"

Both PTFE <\/a>y PFA <\/a>are important in industry and daily life. They are both fluoropolymers, but many people are always confused about choosing the suitable one between them. This article discusses their differences.<\/p>\n

PTFE and PFA are both plastic materials. They are both found by the Dupont company, and Teflon is a trademark belonging to Dupont, including PTFE and PFA material.<\/p>\n

PTFE and PFA have different properties<\/p>\n

PTFE and PFA Property data chart<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Item<\/td>\nPTFE<\/td>\nPFA<\/td>\n<\/tr>\n
Apearance<\/strong><\/td>\nWhite <\/td>\nTransparent granule<\/td>\n<\/tr>\n
Shape<\/td>\nPowder<\/td>\nPellet<\/td>\n<\/tr>\n
Punto de fusi\u00f3n<\/td>\n327\u00b0C (620.6\u00b0F)<\/strong><\/td>\n305\u00b0C (581\u00b0F)<\/strong><\/td>\n<\/tr>\n
Melt viscosity<\/td>\n1011<\/sup>~11013<\/sup> (380\u2103)<\/td>\n104<\/sup>~105<\/sup>(380\u2103)<\/td>\n<\/tr>\n
Continuously Work Temperature<\/td>\n-200 – +250\u2103<\/td>\n-80\u2103- +260\u2103<\/td>\n<\/tr>\n
Hardness (shore)<\/td>\nD50~D65<\/td>\nD60<\/td>\n<\/tr>\n
Tensile strength<\/td>\n25~40<\/td>\n28~35<\/td>\n<\/tr>\n
Elongation (%)<\/td>\n250~450<\/td>\n300~400<\/td>\n<\/tr>\n
Impact strength<\/td>\n160~170<\/td>\nNo cracks<\/td>\n<\/tr>\n
Specific gravity<\/td>\n2.13~2.22<\/td>\n2.12~2.27<\/td>\n<\/tr>\n
Molding shrinkage<\/td>\n0.02~0.05<\/td>\n0.4<\/td>\n<\/tr>\n
Dielectric constant<\/td>\n2.1<\/td>\n2.1<\/td>\n<\/tr>\n
Electric breakdown strength<\/td>\n19<\/td>\n20<\/td>\n<\/tr>\n
Weather resistance<\/td>\nExcelente<\/td>\nExcelente<\/td>\n<\/tr>\n
Resistance to chemical reagents<\/td>\nExcelente<\/td>\nExcelente<\/td>\n<\/tr>\n
Fire resistance<\/td>\n95<\/td>\n95<\/td>\n<\/tr>\n
Volume resistivity (\u03a9*cm)<\/td>\n>10^18<\/td>\n>10^18<\/td>\n<\/tr>\n
Static friction coefficient<\/td>\n0.02<\/td>\n0.05<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n

The appearance<\/strong><\/h2>\n

PTFE resin is a white, powder with a waxy feel and is easy to stick on your hands. PFA resin is a semi-transparent granule. some factories produce in lentil shapes and others in pellet forms.<\/p>\n

\n
\"PTFE<\/a>
PTFE Powder<\/figcaption><\/figure>\n
\"\"<\/a>
PFA Pellet<\/figcaption><\/figure>\n<\/figure>\n

PTFE Dispersion is a milky liquid, But FEP Dispersion is a Translucent liquid.<\/strong><\/p>\n

\n
\"Peflon<\/a>
Dispersi\u00f3n de FEP<\/a><\/figcaption><\/figure>\n
\"\"<\/a>
Dispersi\u00f3n de PTFE<\/a> <\/figcaption><\/figure>\n<\/figure>\n

The processing methods<\/strong> different<\/h2>\n

Different applications with different processing methods. PTFE has a very high viscosity and cannot be melt-extruded. It can only be compression molding or paste-extruded, and then sintering. When making cables, they must be paste-extruded, sintered at high temperatures, or wrapped and sintered. PFA can be formed through compression molding, extrusion, injection molding, and transfer molding. For cable production, PFA can be melt-extruded and formed in one step, with different grades of PFA chosen based on the cable specifications.<\/p>\n

Different applications with different processing methods.<\/p>\n

\n\n\n\n\n\n\n\n\n\n
Solicitud<\/strong><\/td>\nPTFE<\/strong><\/td>\nPFA<\/strong><\/td>\n<\/tr>\n
Parts, Valves, Plugin, Sealing<\/td>\ncompression molding, Sintering<\/td>\nCompression molding<\/td>\n<\/tr>\n
Tube, tape, Wire, Cable<\/td>\npaste-extruded, Wape, Sintering<\/td>\nInjection molding<\/td>\n<\/tr>\n
Rod, Tube, Pipe<\/td>\nRam Extruded<\/td>\nExtruded<\/td>\n<\/tr>\n
Film, Sheets, Sealing<\/td>\nSkived<\/td>\nCalendering<\/td>\n<\/tr>\n
Revestimiento<\/td>\nElectrostatic spraying<\/td>\nElectrostatic spraying<\/td>\n<\/tr>\n
Packing <\/td>\nImpregnation<\/td>\nImpregnation<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n
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