PTFE Delrin 美国杜邦 8A 铁氟龙 阻燃级 高滑动 高光泽 高刚性

产品参数

Teflon®PTFE 8A

聚四氟乙烯

TheChemours Company

产品说明:

Teflon ® PTFE 8A X is a free-flowing white powder composed ofrelatively large particles. It has high bulk density and goodpowder flow. It's most unique features are improved moldability atlower pressure and improved surface smoothness of finished parts.The high bulk density and low compression ratio of Teflon® PTFE 8AX permit the use of shallow molds for small parts and complexshapes. Good powder flow is necessary for use in e thatfeeds resin automatically, and for filling deep and narrow moldsthat are pressed isostatically. Reduced pressure is an advantagefor moldings with large surface area and for isostatic molding.Teflon ® PTFE 8A X is often preferred for molding thick sheets andfor isostatic moldings. It is sometimes used for ram extrusion ofrod and tubing with thicker cross sections. Properly processedproducts made from neat Teflon ® PTFE 8A X provide the superiorproperties typical of the fluoropolymer resins: retention ofproperties after service at 260 °C (500 °F), useful properties at-240 °C (-400 °F), chemical inertness to nearly all industrialchemicals and solvents, and low friction and antistick surfaces.Dielectric properties are outstanding and stable with frequency andtemperature. Molded products have moderate stiffness and highultimate elongation. In a flame situation, products of Teflon ®PTFE 8A X resist ignition and do not themselves promote flamespread. When ignited by flame from other sources, theircontribution of heat is small and with very little smoke.Statements, or data, regarding behavior in a flame situation arenot intended to reflect hazards presented by this or any othermaterial when under actual fire conditions.

Typical Applications
Many end products are fabricated from moldings of Teflon ® PTFE 8AX, including small parts such as ball valve seats, seals, discs,and lab ware. Thick molded sheets are stock shapes made from Teflon® PTFE 8A X. It is also chosen for lining pipes, valves, and valveplugs—and for ducting, expansion bellows, piston rings, and otherlarge complex moldings.