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| Teflon PTFE 640 |
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Teflon PTFE 640 is a white powder composed of agglomerate particles.
Typical of all grades of Teflon PTFE(polytetrafluoroethylene) fine powders, it can be lubricated and extruded by standard paste extrusion techniques.
Compared with other grades of PTFE fine powder, Teflon PTFE 640 is a resin that has increased melt strength and low shrinkage.
It is one of the most consistent and easy-to-process resins.
It is most suitable for products with medium-to-high reduction ratio extrusions.
Properly processed products made from neat Teflon PTFE 640 provide the superior properties typical of the fluoropolymer resins: retention of properties after service at 260'C(500'F), useful properties at -240'C(-400'F), chemical inertness to nearly all industrial chemicals and solvents, and low friction and antistick surfaces.
Dielectric properties are outstanding and stable with frequency and temperature.
Products have moderate stiffness and high ultimate elongation.
In a flame situation, products of Teflon PTFE 640 resist ignition and do not themselves promote flame spread.
When ignited by flame from other sources, their contribution of heat is small and with very little smoke.
Statements, or data, regarding behavior in a flame situation are not intended to reflect hazards presented by this or any other material when under actual fire conditions. |
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Bulk Density, g/L: 475
Average Particle Diameter, mm: 400
Standard Specific Gravity: 2.17
Rheometer Pressure, MPa(psi): 34.5(5,000) |
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