We offer mutually beneficial cooperation and suggest considering the use of modified fluoroplast-4 (Ф-4РМ20) obtained by means of radiation and thermal processing of standard billets (bushings, rods, discs, plates and sheets) produced of polytetrafluoroethylene (PTFE).

Ф-4РМ20belongs to materials of the new generation and of new possibilities in the world of seals. It enables operation in extreme conditions in which well-known composites are destructed by pressure, temperature, friction or radiation. It has been developed in cooperation with specialists in radiophysics and polymer chemistry.

Characteristics

Ф-4

Ф-4РМ20

Coefficient of friction in the pin-disc kinematic configuration

0.06 – 0.08

0.06 – 0.08

Coefficient of friction in the shaft-bushing kinematic configuration

0.10 – 0.12

0.08 – 0.14

Wear in the pin-disc kinematic configuration at the stress of 25 kg/cm2 and the sliding speed of 1m/s; mg/hour

900

0.1

Wear in the shaft-bushing kinematic configuration at the stress of 6.8 kg/cm2 and the shaft rotation speed of 0.5 m/s; mg/m

25

0.06

Tensile strength (film, 100 – 250 μm); MPa

25 - 30

20 - 25

Tensile strength (plate, 2 mm); MPa

20 - 25

15 - 20

Elongation at break, %

350 - 450

300 - 400

Tensile modulus (plate, 2 mm); MPa

280

350

Yield point (plate, 2 mm); MPa

14

22

Creep at room temperature at the static loading stress of 70% of tensile strength, 100 hours; %

150

1 - 2

Creep at 250 °C at the static loading stress of 0.5 MPa, 2 hours; %

11

1.5

Compression deformation at the loading stress of 14 MPa, 24 hours; %

16

10

Permanent compression deformation in 24 hours after the removal of load equaling 14 MPa; %

75

0

Compression deformation at the loading stress of 28 MPa, 24 hours; %

41

29

Permanent compression deformation in 24 hours after the removal of load equaling 28 MPa; %

61

30

Dielectric permittivity at 109 Hz

2.1

2.1 – 2.2

Dielectric absorption at 109 Hz

2.0×10-4

(2.0 – 3.0) × 10-4

Optical transparency (film, 500 μm); %

40 - 50

70 - 80

Melting point, °C

327

300

Chemical resistance

High

No changes

Radiation resistance, Mrad

1

100 - 300

We are ready to provide trial samples of the material for testing.