PTFE Powder CGF-206

Productname:PTFE Powder CGF-206

Details

PTFE Powder CGF-206
(for paste extrusion)

Molecular formula: [CF2--CF2]n
Properties and Applications
In addtion to all excellent properties of PTFE material, CGF-206 has outstanding performance in  paste extrusion to manufacture sealing tape, etc.. The resin are processed by mixing them with some organic solvents, 100# aero kerosene for example,   to obtain paste which are made into coherent, smooth and flat semifinished products after ram extrusion. Druing this progression the extruding pressure remains steady .The semifinished products are further processed to produce unsintered tape by calendering, enlongating and removing solvent with heat.
Normally 4 diameters are set for CGF-206 extruded   straps : 5.0mm, 4.5mm, 3.2mm, 2.8mm.
Specification :

GRADE	CGF-206
Apparent Density	360 ~ 400 g/l
Average Particles Size	700 + - 80 um
R. R'/400 Extrusion Pressure	12.0 ~ 18.5 MPa (14.5 ~ 16.0 MPa is recommended)
Tensile Strength	no less than 18 MPa
Elongation	no less than 330%
Main Applications	Non-cutting apart oil-free unsintered tape
Tape Width	12 mm	15 mm	20 mm	25 mm
Tape Density	2.17 ~ 2.19

Processing of the oil-free unsintered tape
1. Solvent: Aero Kerosene 100#
2. Amount of slvent used : 20.1 ~ 20.6 g per 100g resin . 20.7 ~ 20.8 g per 100g resin is recommended.
3. Temp. and time for solvent infiltration  before extrusion :  8 ~ 10 hr. at 45OC ~ 55 OC
4. Ram extrusion temp.: 50OC ~ 60 OC
5. Calendering temp. : 60 + - 10 OC
6. Oil removing temp. (for drying) : 200 + - 10 OC
7. Elongating temp. : 285 + - 15 OC
8. Tape thickness could be reached : 0.070 + - 0.005 mm