Teflon® FEP CJ 99

About
For inventory control purposes product name may be followed by an X. Products labeled FEP CJ 99 and FEP CJ 99 X are equivalent and all information in this document is applicable to both. Typical Application Wire and cable insulation, small tubing and injection molded parts. DuPont Teflon ® FEP CJ 99 is a melt-processible copolymer of tetrafluoroethylene and hexafluoropropylene without additives that meets the requirements of ASTM D 2116 type I. Thanks to the unique combination of a Melt Flow Rate in the range of 9 g/10 min and MIT flexlife above 40 000 cycles, this resin offers both attractive processing speeds and high stress-rack resistance in addition to the excellent characteristics typical of Teflon ® fluoropolymer resins, such as non-ageing characteristics, chemical inertness, exceptional electrical properties, low flammability, heat resistance, toughness and flexibility, low coefficient of friction, non-stick characteristics, negligible moisture absorption and excellent weather resistance. The increased transparency of Teflon ® FEP CJ 99 will also allow better colourability. Stress crack resistance is an important element in establishing end-use performance. Extensive testing of wire and cable constructions is required for definitive performance evaluation. Well-known and most comprehensive tests for stress rack resistance of wire and cable are mandrel wrap tests as described in the military specification MIL-W-22759 (aerospace) and ISO 6722/LV112 (automotive). Experience has shown that the MIT folding endurance or flex life test, based on ASTM D 2176, performed on a thin film of resin, gives a good correlation with stress crack resistance. Resins with a higher MIT flex life, perform better in the stress-crack resistance tests. Teflon ® FEP CJ 99 has a higher degree of stress crack resistance than most FEP resins with similar viscosity (MFR) and offers higher productivity than FEP resins with similar stress crack resistance (MIT). We recommend that for applications involving repeated thermal and flex cycling, specific tests on the final cable always should be undertaken. The MIT test results should be viewed as guide to comparative performance of the various grades of resin.&&

About

For inventory control purposes product name may be followed by an X. Products labeled FEP CJ 99 and FEP CJ 99 X are equivalent and all information in this document is applicable to both. Typical Application Wire and cable insulation, small tubing and injection molded parts. DuPont Teflon ® FEP CJ 99 is a melt-processible copolymer of tetrafluoroethylene and hexafluoropropylene without additives that meets the requirements of ASTM D 2116 type I. Thanks to the unique combination of a Melt Flow Rate in the range of 9 g/10 min and MIT flexlife above 40 000 cycles, this resin offers both attractive processing speeds and high stress-rack resistance in addition to the excellent characteristics typical of Teflon ® fluoropolymer resins, such as non-ageing characteristics, chemical inertness, exceptional electrical properties, low flammability, heat resistance, toughness and flexibility, low coefficient of friction, non-stick characteristics, negligible moisture absorption and excellent weather resistance. The increased transparency of Teflon ® FEP CJ 99 will also allow better colourability. Stress crack resistance is an important element in establishing end-use performance. Extensive testing of wire and cable constructions is required for definitive performance evaluation. Well-known and most comprehensive tests for stress rack resistance of wire and cable are mandrel wrap tests as described in the military specification MIL-W-22759 (aerospace) and ISO 6722/LV112 (automotive). Experience has shown that the MIT folding endurance or flex life test, based on ASTM D 2176, performed on a thin film of resin, gives a good correlation with stress crack resistance. Resins with a higher MIT flex life, perform better in the stress-crack resistance tests. Teflon ® FEP CJ 99 has a higher degree of stress crack resistance than most FEP resins with similar viscosity (MFR) and offers higher productivity than FEP resins with similar stress crack resistance (MIT). We recommend that for applications involving repeated thermal and flex cycling, specific tests on the final cable always should be undertaken. The MIT test results should be viewed as guide to comparative performance of the various grades of resin.&&

Product Description
Supplier	Chemours
Generic	FEP
Material Status	Commercial: Active
Features	Weather resistance is good,Good flexibility,Good Electrical Properties,Low coefficient of friction,Quick molding cycle,Food contact compliance,High Heat Resistance,Solvent resistance,Low moisture absorption,High ESCR,Good coloring,V-0
Availabilitys	North America,Latin America,Asia Pacific,Europe
Process Methods	Extrusion

Technical Data
PHYSICAL	Nominal value	Unit	Test method
Density
—	2.13	g/cm³	ASTM D792
—	2.13	g/cm³	ISO 1183
Melt Flow Rate
372℃，5.0kg	9.0	g/10min	ASTM D2116
372℃，5.0kg	9.0	g/10min	ISO 12086
Water absorption rate
24hr	< 0.010	%	ASTM D570

MECHANICAL	Nominal value	Unit	Test method
Shore hardness
Shaw’s D	56		ISO 868
Shaw’s D	56		ASTM D2240
tensile strength
Yield, 23 ℃	28.0	MPa	ISO 12086
Yield, 23 ℃	28.0	MPa	ASTM D638
Tensile strain
Fracture, 23 ℃	300	%	ISO 12086
Fracture, 23 ℃	300	%	ASTM D638

IMPACT	Nominal value	Test method
Impact strength of cantilever beam notch
23℃	No Break	ASTM D256
23℃	No Break	ISO 180

THERMAL	Nominal value	Unit	Test method
Continuous use temperature	205	℃
Melting temperature	255	℃

Electrical performance	Nominal value	Unit	Test method
Dielectric strength
0.25 mm	> 100	kV/mm	IEC 60243-1
0.25 mm	> 100	kV/mm	ASTM D149
Dielectric constant			ASTM D150
1 kHz	2.03		ASTM D150
1.00 GHz	2.03		ASTM D150
Relative permittivity			IEC 60250
1 kHz	2.03		IEC 60250
1.00 GHz	2.03		IEC 60250
Dissipation factor			ASTM D150
1 kHz	5.0E-5		ASTM D150
1 GHz	8.0E-4		ASTM D150
Dissipation factor			IEC 60250
1 kHz	5.0E-5		IEC 60250
1 GHz	8.0E-4		IEC 60250

FLAME CHARACTERISTICS	Nominal value	Unit	Test method
Flame retardant level	V-0		UL 94
Extreme oxygen index	> 95	%	ASTM D2863
Extreme oxygen index	> 95	%	ISO 4589-2

Supplementary information	Nominal value	Unit	Test method
Critical Shear Rate（372℃）	29.0	sec^-1	Internal Method
Guide DDR Range（for cable extrusion）	60.0 to 120
MIT flexural strength (film, 200.0 µ m)	4.0E+4	Cycles	ASTM D2176

Notes
1. Typical properties: these are not to be construed as specifications.
2. The continuous service temperature is based on accelerated heat-aging tests, and represents the temperature at which tensile strength and ultimate elongation retains 50% of the original values, after 20 000 h thermal aging When considering the use of Teflon ® FEP at elevated temperatures especially in combination with mechanical, electrical or chemical exposure, preliminary testing should be done to verify suitability.
3. ASTM D4591 / D3418
4. Method A (Short-Time)
5. – These results are based on laboratory tests, under controlled conditions, and do not reflect performance under actual fire conditions. – Current rating is a typical theoretical value
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