Insulation & Sheath Material Properties In General

Characteristics of High Temp. Insulation and Sheath Materials

Designation			Electrical
VDE initial-code	Abbre-viations	Materials	Density	Break down voltage	Specific volume resistivity	Dielectric-constant	Dielectric loss factor tan δ
			g/cm3	KV/mm (20°C)	Ohm·cm 20°C	50 Hz/20°C
10Y	PVDF	Polyvinylidene fluoride	1,7–1,9	25	1014	9–7	1,4 x 10–2
7Y	ETFE	Ethylene-Tetrafluorethylene	1,6–1,8	36	1016	2,6	8 x 10–4
6Y	FEP	Fluorinated ethylene propylene	2,0–2,3	25	1018	2,1	3 x 10–4
5YX	PFA	Perfluoroalkoxypolymeric	2,0–2,3	25	1018	2,1	3 x 10–4
5Y	PTFE	Polytetrafluorethylene	2,0–2,3	20	1018	2,1	3 x 10–4
	E-CTFE	Ethylene-Chlorotrifluoroethylene	1,67–1,69	39	1015	2.5	9 x 10–3

Designation			Thermic
VDE initial-code	Abbre-viations	Materials	Working temp		Melt-temp	Oxygen index LOI	Heating value H0	Thermal-conductivity	Corrosive gases in case of fire	Radiation resistance
			Perma-nent (°C)	Short time(°C)	+°C	(% O2)	MJ·kg-1	W·K-1·m-1		Mrad
10Y	PVDF	Polyvinylidene fluoride	– 40+135	+160	＞170	40–45	15	0,17	Hydrofluoric	10
7Y	ETFE	Ethylene-Tetrafluore-thylene	–100+150	+180	＞265	30–35	14	0,24	Yes	10
6Y	FEP	Fluorinated ethylene propylene	–100+205	+230	＞225	＞95	5	0,26	Yes	1
5YX	PFA	Perfluoroalkoxy-polymeric	–190+260	+280	＞290	＞95	5	0,21	Yes	0.1
5Y	PTFE	Polytetra-fluorethylene	–190+260	+300	＞325	＞95	5	0,26	Yes	0,1
	E-CTFE	Ethylene-Chlorotri-fluoroethylene	–100+140	+170	＞242	＞60	14	0,14	YES	0.01

Designation			Mechanical				Halogen
VDE initial-code	Abbre-viations	Materials	Tensile strength	Elongation at break	Shore hardness	Water absorbtion	Halogen-free
			N/mm2	%		%
10Y	PVDF	Polyvinylidene fluoride	50–80	150	75–80 (D)	0,01	No
7Y	ETFE	Ethylene-Tetrafluorethylene	40–50	150	70–75 (D)	0,02
6Y	FEP	Fluorinated ethylene propylene	15–25	250	55–60 (D)	0,01
5YX	PFA	Perfluoroalkoxy-polymeric	25–30	250	55–60 (D)	0,01
5Y	PTFE	Polytetra-fluorethylene	80	50	55–60 (D)	0,01
	E-CTFE	Ethylene-Chlorotri-fluoroethylene	48	200-300	75()D	0.1

Designation			Properties
VDE initial-code	Abbre-viations	Materials	Oxidation resistance	Heat resis-tance	Oil resis-tance	Low-tempe-rature flexibility	Weather, sun resistance	Ozone resis-tance	Abrasion resistance	Flame resis-tance
10Y	PVDF	Polyviny-lidene fluoride	O	O	E	F	E-O	E	E	E
7Y	ETFE	Ethylene-Tetrafluore-thylene	E	E	E	E	E	E	E	G
6Y	FEP	Fluorinated ethylene propylene	O	O	O	O	O	E	E	O
5YX	PFA	Per-fluoroalkoxy-polymeric	E	E	E	E	E	E	G	E
5Y	PTFE	Polytetra-fluorethylene	O	O	E-O	O	O	O	O	E
	E-CTFE	Ethylene-Chlorotri-fluoroethylene	O	O	O	O	O	E	E	E-O

P = Poor; F= Fair; G = Good; E = Excellent; O = Outstanding

Designation			Properties
VDE initial-code	Abbre-viations	Materials	Water resis-tance	Acid resis-tance	Alkali resis-tance	Aliphatic hydrocarbons resistance (Gasoline, kerosene, etc)	Aromatic hydrocarbons resistance (Benzol, toluol, etc.)	Halogenated hydrocarbons resistance (Degreaser solvents)	Alcohol resis-tance
10Y	PVDF	Polyviny-lidene fluoride	E	G-E	E	E	G-E	G	E
7Y	ETFE	Ethylene-Tetrafluore-thylene	E	E	E	E	E	E	E
6Y	FEP	Fluorinated ethylene propylene	E	E	E	E	E	E	E
5YX	PFA	Per-fluoroalkoxy-polymeric	E	E	E	E	E	E	E
5Y	PTFE	Polytetra-fluorethylene	E	E	E	E	E	E	E
	E-CTFE	Ethylene-Chlorotri-fluoroethylene	E	E	E	E	E	E	E

P = Poor; F= Fair; G = Good; E = Excellent; O = Outstanding