Fluororesin: "What are the differences in types of resins?"

I will explain the differences between the representative fluororesins "PTFE," "PFA," and "FEP."

Types and Characteristics of Representative Fluororesins ■Resin Name PTFE (Polytetrafluoroethylene) ■Characteristics It has the highest continuous use temperature of 260°C, and is excellent in heat resistance, non-stick properties, and low friction characteristics. It has a high melt viscosity, making common molding methods for thermoplastic resins unsuitable. ■Also Known As Tetrafluoroethylene, 4F ■Resin Name PFA (Perfluoroalkoxyalkane Polymer) ■Characteristics An improved resin of PTFE, it has the same continuous use temperature of 260°C. It has a low thermal melt viscosity, allowing processing using molding methods for thermoplastic resins such as injection molding and extrusion. ■Resin Name FEP (Perfluoroethylene Propylene Copolymer) ■Characteristics An improved resin of PTFE, but with lower heat resistance than PTFE. Similar to PFA, it can be processed using molding methods for thermoplastic resins. ■Also Known As 4F6F, Tetrahexafluoride

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basic information

Properties of Fluororesin ■Non-stick It has excellent release properties against strongly adhesive substances, meaning it does not stick or is difficult to stick. ■Water and Oil Repellency It repels water and oil well when they come into contact with the surface, making it difficult for dirt to adhere and easy to clean. ■Heat and Cold Resistance Among resins, it has high heat resistance, enduring high temperatures (up to 260°C). It also withstands low temperatures down to -260°C. ■Low Friction It has a slippery surface with a low friction coefficient and exhibits excellent lubricity. ■Chemical Resistance It is rarely affected or corroded by chemical substances such as acids and alkalis. While a thin coating is not compromised, chemicals and solutions can penetrate the coating and corrode the substrate, so a thicker coating is applied to prevent substrate corrosion. ■Electrical Properties It has high dielectric strength (resistance to electrical breakdown), volume resistivity, and surface resistivity, demonstrating excellent electrical insulation properties.