铁氟龙, 氟橡胶, 铁氟龙FEP, PVDF法国阿科玛9000HD, ETFE日本旭硝子C-88AX, PFA美国杜邦340, PA66/F/PTFE美国液氮RFL-403, PA66/PTFE美国液氮RL-4040, POM/PTFE基础创新塑料KL004
铁氟龙, 氟橡胶, 铁氟龙FEP, PVDF法国阿科玛9000HD, ETFE日本旭硝子C-88AX, PFA美国杜邦340, PA66/F/PTFE美国液氮RFL-403, PA66/PTFE美国液氮RL-4040, POM/PTFE基础创新塑料KL004
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| Teflon® PTFE 640XT X | |||
| Polytetrafluoroethylene | |||
| Product Description: | |||
| DuPont ™ Teflon ® PTFE 640XT X is a polytetrafluoroethylene fine powder resin used primarily for paste extrusion. Teflon ® PTFE 640XT X offers the excellent combination of properties typical of the Teflon ® fluoropolymer resins: | |||
| non-aging characteristics; | |||
| chemical inertness to nearly all industrial chemicals and solvents; | |||
| exceptional dielectric properties, stable with frequency and temperature; | |||
| toughness and flexibility; | |||
| low coefficient of friction; | |||
| non-stick characteristics; | |||
| negligible moisture absorption; | |||
| excellent weather resistance; | |||
| service temperature up to 260°C (500°F); | |||
| useful properties at -240 °C (-400 °F); | |||
| Teflon ® PTFE 640XT X is designed for processing over a wide extrusion reduction ratio range (250:1 to 5000:1), with excellent performance even at the top of this range. Due to its outstanding transformation characteristics, Teflon ® PTFE 640XT X can be extruded with very low lubricant levels over a wide reduction ratio range, while the extrusion pressure remains low. For example, Teflon ® PTFE 640XT X can be extruded into wire with excellent performance in the reduction ratio range of 1000:1 to 4500:1 with a single lubricant level of 16% (based on total weight). This means that a single PTFE/lubricant mixture can be used for many constructions being manufactured in the same size extruder line. | |||
| In addition, the excellent high reduction ratio performance means that products made in small-bore machines with other lower reduction ratio rated fine powders can now be extruded in larger ones, which represent a considerable economic advantage, since more material can be extruded per extrusion. This also means that longer lengths of wire or tubing can be achieved in one extrusion. | |||
| Teflon ® PTFE 640XT X meets the requirements of ASTM D 4895-10, Type I, Grade 1, Class C. | |||
| Typical Applications | |||
| Teflon ® PTFE 640XT X is mainly used for insulation of high-performance wire and cables, as well as tubing. It is also suitable for other typical applications such as additives where some properties of PTFE are required. | |||
| General | |||
| Features | Food Contact Acceptable | Good Flexibility | Low Friction |
| Good Chemical Resistance | Good Toughness | Low Moisture Absorption | |
| Good Electrical Properties | Good Weather Resistance | Solvent Resistant | |
| Uses | Additive | Tubing | |
| Insulation | Wire & Cable Applications | ||
| Agency Ratings | EU 10/2011 | FDA 21 CFR 177.1550 | |
| Forms | Powder | ||
| Processing Method | Extrusion | ||
| Physical | Nominal Value | Unit | Test Method |
| Specific Gravity | 2.16 | g/cm³ | ISO 12086, ASTM D4895 |
| Apparent Density | 0.5 | g/cm³ | ASTM D4895, ISO 12086 |
| Average Particle Size | |||
| -- | 450 | µm | ISO 12086 |
| -- | 450 | µm | ASTM D4895 |
| Thermal | Nominal Value | Unit | Test Method |
| Melting Temperature | ASTM D4591, ISO 12086 | ||
| -- 2 | 326 | °C | |
| -- 3 | 344 | °C | |
| Thermal Instability Index | |||
| -- | < 15.0 | ISO 12086 | |
| -- | < 15.0 | ASTM D4895 | |
| Additional Information | Nominal Value | Unit | Test Method |
| Extrusion Pressure | |||
| at RR = 1600:1 | 22 | MPa | ISO 12086 |
| at RR = 1600:1 | 22 | MPa | ASTM D4895 |
| at RR = 2500:1 | 28 | MPa | ASTM D4895 |
| at RR = 2500:1 | 28 | MPa | ISO 12086 |
