聚四氟乙烯技術說明書

 

1/45

property

unit

ASTM

standard

PTFE

PFA

FEP

ETFE

ECTFE

PVDF

Physical
property

Melting Point

°C
F

 

327 621

306 582

260 500

267 512

245

156
-170

Specific Gravity

g/cm3

D792

2.14 -2.20

2.12 -2.17

2.12 -2.17

1.70

1.68 -1.69

1.75 -1.78

Mechanical
Properties

Tensile Strength

kgf/cm2

D638

140 -350

 

190 -220

460

490

350-440

Elongation

%

D638

200 -400

300

250 -330

100-400

200-300

80-300

Impact Strength

kgfcm/cm

D256A

16.3

No break

No break

No Break

No break

16.3-38.1

Hardness Rockwell R

 

D785

R58

R60

R45

R50

R95

R110

Hardness

 

D2240

D50
-55

D64

D60-65

D75

D55

 

Flexural Modulus

10³kgf/cm²

D790

5.6

8.4

5.6 -6.7

14

6.7 -7.0

20.4-25.3

Tensile modulus

103kgf/cm2

D638

4.1 -5.6

 

3.5

8.4

 

13.4-15.5

Coefficient of kinetic friction

 

7kgf/cm2
3m/mim

0.10

0.2

0.3

0.4

 

0.39

Thermal
property

Thermal conductivity

(BTU/hr/in)

C177

1.75

1.80

1.40

1.65

1.06

1.5

Specific heat

Cal/°C/g

 

0.25

0.25

0.28

0.46-0.47

 

0.33

Coefficient Of Linear Thermal

10-5/°C

D696

10

12

8.3-10.5

5.9

8

7-14

Temperature

°C

 

180

230

170

185

   

18.5kgf/cm²

°C

D648

55

47

50

74

77

87-115

4.6kgf/cm2

°C

D648

121

74

72

104

116

149

Maximum use of Temperature
(continuous)

°C

 

260

260

200

150-180

165-180

150

Electrical
Property

Volume Resistivity

Ω-cm

D257
(50%RH.
23°C)

>1018

>1018

>1018

>1017

3*9>1014

2*>1016

Dielectic Strength*

Kv/mm
(3.2mm)

D149

19

20

20-24

16

20

10-11

60 Hz

 

D150

< 2.1

< 2.1

2.1

2.6

2.6

8.4

103 Hz

 

D150

< 2.1

< 2.1

2.1

2.6

2.6

7.72

106HZ

 

D150

< 2.1

< 2.1

2.1

2.6

2.6

6.43

60 Hz

 

D150

< 0.0002

< 0.0002

< 0.0002

< 0.0006

< 0.0005

< 0.049

103HZ

 

D150

< 0.0002

< 0.0002

< 0.0002

0.0008

0.0015

0.018

106HZ

 

D150

< 0.0002

< 0.0002

< 0.0002

0.005

< 0.015

0.17

Durability

sec

D495

> 300

> 300

> 300

75

18

50-70

Chemical
Property

Water Absorption,24 h

 

D570

< 0.01

0.03

< 0.01

0.029

0.01

0.04-0.06

Flame Rating*

 

(UL-94)

V-0

V-0

V-0

V-0

V-0

V-0

3.2cm thickness flammability

 

D2863

> 95

> 95

> 95

30

60

44

Direct to Sunlight

   

No Effect

No Effect

No Effect

No Effect

No Effect

No Effect

Chemical / Solvent Resistance

 

D543

No Effect

No Effect

No Effect

No Effect

No Effect

No Effect

Impact for strong acid

 

D543

No Effect

No Effect

No Effect

No Effect

No Effect

Fuming
Sulfuric
acid

Weak Alkali

 

D543

No Effect

No Effect

No Effect

No Effect

No Effect

No Effect

Strong Alkali

 

D543

No Effect

No Effect

No Effect

No Effect

No Effect

No Effect

Solvent

 

D543

No Effect

No Effect

No Effect

No Effect

Resist for most of solvent

Resist for most of solvent

總計 : 0