Characteristics£ºPTFE can resist high /low temp., it can work well in -250¡æ¡«260¡æ £» good abrasion£¬lowest static friction coefficient, self-lubricant, good insulation, it is not be affected by environment, humidity£¬temp. and frequency. It can resist electrical arc and chemical corrosion . It can wrok well in strong acid, strong alkali, strong oxidant, grease, acetone, ether and alcohol
Characteristics£ºFEP's property is similar to PTFE £¬operational temp.£º-250¡æ¡«200¡æ£¬Compared to PTFE £¬ it offer higher impact flexibility, better sealing capacity, good adhesion to metal, and glass. It can work well in acid , alkali , solvent and oxidant .
Properties of F4, F46, Po, RPP £¨ see manual od corrosive data£© |
Name |
Polytetrafluoroethylene F4 |
F46 |
Po |
RPP |
SG g/cm3 |
2.1¡«2.2 |
2.14¡«2.17 |
0.91¡«0.96 |
0.92¡«1.00 |
Tensile strength MPa |
19.6¡«22 |
19¡«22 |
10¡«18 |
¡Ý35 |
compressive strength MPa |
12 |
15 |
36 |
¡Ý90 |
elastic modulus MPa |
410 |
350 |
130¡«250 |
130¡«250 |
hardness MPa |
55 |
R25 |
25 |
¡Ý90 |
coefficient of linear expansion 10¡«6/¡æ |
100 |
90 |
100¡«120 |
¡Ý9¡«11 |
ultimate elongation % |
200¡«400 |
25¡«330 |
300¡«500 |
250¡«250 |
Mp ¡æ |
327 |
288 |
130 |
145 |
Temp. ¡æ |
-200¡«260 |
-150¡«200 |
-60¡«110 |
-60¡«120 |
operational temp.Operational pressure of F4, F46, RPP(PP), Po lined products |
Type |
operational temp.¡æ |
Operational pressureMPa |
F4 lined pipe and equipment |
-50¡«200 |
positive pressure type £ºcan not resist negative pressure, internal pressure ¡Ü1.6 |
negative pressure type DN¡Ü100£¬
-0.098¡«1.6
DN is increased, negative pressure resistance is less |
F46 lined pipe and equipment |
-50¡«150 |
RPP(PP) lined pipe and equipment |
-20¡«110 |
Po lined pipe and equipment |
-50¡«100 |
-0.098¡«1.6 |
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