Item

    DF-20 1

Excellent

Grade A

Qualified

1

Smoothness & Cleaness

White sheet surface, even texture, no gravel and metal powder, ≤1 for mechanical impurity (≥0.5m) or organic impurity (≥ 2mm)

White sheet surface, fiber is average, no gravel and metal powder, allow 0.5mmm organic impurity.

2

Tensile Strength,(Mpa)≥

2 4 .0

20.7

18.6

3

Elong. at Rupture(%)≥

3 5 0

4

Volume Density,(g/L)

475±100

5

Extrude pressure ( RR100) Mpa

9.7±4.2

6

Average Grain ( μ m)

525±150

7

Moisture Content.(%)≤

0.04

8

Melting Point(℃

327±5

9

Stand Relative Density

2.200

10

Thermal Inst, Index ≤

50

11

Electric Strength(KV/MM)≤

2.1

-----

12

Dielectric Dissipation factor

3*10¯4

13

For check

Execute according to requirement of HG/T3028-1999

14

For process

Paste extrusion

15

usage

It is suitable for making unsintered tape.

16

Packing, Storage Transportation

1、 PTFE is packed in double layer PVC bags inside and in

hard circular barrels outside, on the barrel, there should

be attached label and quality certificate, on which there

are brand, trademark, executive criterion. type, grade, lot

NO. and net content, pack date, checker, packager.

2、 PTFE should be stored in clean dry warehouse to prevent

from dust, moisture, etc. foreign matters.

3、 The products are transported according to non-dangerous

products, Heat ,moisture, freezing and strong shock

should be avoided during transportation. Over-bumpiness

and compression is apt to make the resin bind together.