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PTFE materials

Catalogue <<< POLYMERS MATERIALS <<< PTFE materials
 
PTFE sheet
in detail
PTFE rods
in detail
no photo
PTFE tape
in detail
PTFE packing tape
in detail
PTFE packing cord
in detail
PTFE tube
in detail
 

  The unique properties of fluoroplastic make things out of him indispensable in the chemical, electrical engineering, mechanical engineering, food processing, light industry and medical industry, is in great demand in the oil refining industry. From fluoroplastic manufactured parts, chemical equipment, membranes, valves, gaskets, pipes, pipe bends, columns and bearings, conveyor belts, and many others.

 Depending on the conditions of use are products of a mixture of fluoroplastic 4 with the various components: coke, molybdenum disulfide and carbon fiber. The introduction of additives increased abrasion resistance, hardness, compression strength, reduced deformation under load, while most part of valuable qualities of fluoroplastic -4 does not change.

 Application of fluoroplastic products provides a quick payback of all costs due to enhanced functionality and increased equipment life, saves energy and costs for maintenance and repair, increases the reliability of the equipment.

 Composite materials based on fluoroplastic  is used for the manufacture of plain bearings, sleeves, sealing rings, gaskets hydraulic systems (machines, vehicles), mechanical devices, seals and plunger piston compressors, directing assembly lines and loading machines, equipment for processing food, guide ropes cars industrial and construction equipment, moving the supports of bridges, railways, cars, clutch plates for precision machinery, parts of aircraft control systems neutralizing the gas system device which is reversible motor.

Fluoroplastic  SPECIFICATIONS:

 

Physical properties   of  PTFE

Density, gram/sm3

2,14-2,26

Thermal capacity, kal/g°C

0,25

Factor of linear expansion 1х10-5 / ° С

8-25

 

Heat conductivity, kcal/m. h °С

0,2

Temperature of fusion, °С

327

The minimal working temperature, °С

-269

The maximal working temperature, °С

260

Water absorption for 24 hours, %

0

Temperature constancy on Vick, °С

110

Breaking point at a stretching, МPa

Not less than 22.5

Thermostability at 415 °C , H

Not less than 100

 

 

Mechanical properties of  PTFE

Strength at a stretching, kgs/sm2

200-300

Lengthening at break, %:

300-350

Relative

350-500

Residual

250-350

Strength at compression, kgs/sm2

120

The module of elasticity at compression, kgs/sm2

7000

Strength at a static bend, kgs/sm2

110-140

The module of elasticity at a bend (at 20°С),kgs/sm2

4700

Specific impact strength, kgs. Sm/sm2

More than 100

Hardness on Brinelju, kgs/mm2

3-4

 

Factor of friction on steel

0,2

Quality of machining

Excellent

 

 

Chemical properties of  PTFE

Temperature of decomposition, °С

Above 415

Loss of weight for 5 hours, %

0,2 (at 420°С for 3 hours)

Combustibility

Does not burn

Atmosphere resistance

Excellent

Stability to acids

It is steady

Stability to alkalis

It is steady

 

Electroisolation Properties of  PTFE

Specific volumetric electric resistance, Оm.sm

1017-1020

Specific superficial resistance, Om

Not less than 1017

Electric durability, Watt/meter

Not less than 25.106

Dielectric permeability at frequency of 103 Hz

1.9-2.2

Tangent of a corner of dielectric losses at frequency of 103 Hz

0.0002-0.0003

Arc resistance, seconds

250

 

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