Items

Unit

Disperse PTFE -- 7D

Grade 1

Grade 2

Grade 3

1

Mould Ability

Extruding press ,

27.5 +/- 13.5 MPa

-----------------

Appearance of extrudee

Continuous , straight ,smooth

2

Volume density

g/L

475 +/- 100

3

Average grain

Um

425 +/- 150

4

Moisture

%

0.04% Max

5

Melting point

°C

327+/-10 °C

Property of Moulding samples result

2

Tensile strength

MPa

24 Min

20.7 Min

18.6 Min

3

Extension at break

%

350 Min

350 Min

300 Min

7

Standard relative density

2.17 – 2.23

2.17-2.25

8

Thermal instability index 

20 Max

30 Max

9

Dielectric constant

2.1 Max

10

Dielectric Dissipation factor

3 x 10 ^–4