Virgin Molding – F4 RB
HaloPolymer PTFE Fluoroplast-4 grade RB (F-4RB) is a product of suspension polymerization of TFE subjected to grinding.
This fully fluorinated resin has excellent chemical stability, electrical and mechanical properties and can be used for production of a variety of general purpose articles by compression molding technique. This material can be used for production of articles for chemical, mechanical and low-friction applications.
Typical applications: Can be used as a raw material for production of pre-sintered and fine cut grades. Grade RB can also be used fot general purposes: molded sheets, small parts, etc.
Availability: 28 kg cardbox with 2 x 14 kg polyethylene inserts.
TYPICAL PROPERTIES OF PTFE GRADE RB
| PROPERTIES | UNITS | TYPICAL VALUE | TEST METHOD |
| Appearance | – | White, easily lumping powder, without visible inclusions | Visual
(internal method1) |
| Particle size, average diameter (d50) | μm | 150-250 | Laser-diffraction analyses
(internal method1) |
| Water content, max | % wt | 0,02 | internal method1 |
| Bulk density | g/l | 450-600 | internal method1 |
| Density (SSG) | g/sm3 | 2,15 – 2,17 | internal method1 |
| Tensile strength at break, min | MPa | 20 | internal method1 |
| Elongation at break, min | % | 250 | internal method1 |
| Mould shrinkage | % | 2,2 | internal method1 |
| Melting point | ˚C | 342 | ASTM D4894 |
Note:
1) The value of the parameters is per GOST, because manufactured products are analyzed according to GOST (Russian State Standard). The sample preparation procedure has a difference with the ASTM. The standard of the company is GOST 10007-80 (Specific molding pressure is 29.4 MPa with dwell time of 1 minute, temperature of heat treatment of plates for the samples is 380-390 °C, and time of heat treatment is 13 hours).
More detailed information:
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