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PFA is a fluoropolymer with excellent thermal and chemical resistance.
PFA is similar in composition to the fluoropolymers PTFE and FE, sharing low coefficient of friction, non-stick properties and non-reactivity characteristics. PFA resists UV light and has better heat resistance, higher melt strength and can be used within a temperature range of -200oC to 260oC.
PFA also offers stability at high processing temperatures, excellent crack and stress resistance whilst maintaining more than ten times the flex life of FEP. A low dielectric constant allows PFA to be used in semiconductor manufacturing and many electrical applications. PFA coating is ideal when extended services are required in hostile environments including chemical, thermal and mechanical stress.
As with other thermoplastic resins PFA can be extruded, injection moulded, blow moulded and transfer moulded for applications such as tubing, receptacles, lining and wire coating.
Item | Unit | DS702 | DS701 | DS700 | DS708 | Test Method/Standards |
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| A | B | C |
| Appearance | / | Translucent particle, with impurities such as metal debris and sand, containing visible black particles percentage point less than
2% | / | Melting Index | g/10min | 0.8-2.5 | 2.6-6 | 6.1-12 | 12.1-16 | 16.1-24 | >24 | GB/T 3682 | Relative density
(25oC) | / | 2.12-2.17 | GB/T 1033 | Melting Point | oC | 300-310 | GB/T28724 | Continuous use Temperature | oC | 260 | / | Tensile Strength(23oC),≥ | Mpa | 32 | 30 | 28 | 26 | 24 | 24 | GB/T 1040 | Elongation at break(23oC) | % | 300 | 300 | 350 | 350 | 350 | 350 | GB/T 1040 | Moisture,< | % | 0.01 | GB/T 6284 | Moisture,< | / | 2.2(Non-flammable, Non-toxic Gas) |
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| Flammability Limits(volume) | % | 1.1-47.0 |
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The process temperature should not exceed 425°oC, to prevent PFA decomposition and equipment corrosion. not to stay long time in high temperature.DS702:used for lining of pipe, valve, pump and bearing;
DS701:used for pipe, insulation jacket of wire,membranes;
DS700:used for extrusion process, mainly used for the jackets of wire and cable;
DS708:used for high-speed extruded wire and cable.
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