At present, the most commonly used filter cloth is made of synthetic fiber, including terylene, Vinylon, polypropylene and Kapron etc.
Performances of filter cloth:
Properties | Terylene | Kapron | Polypropylene | Vinylon |
Acid resistance | Strong | Poor | Excellent | not resistant to acid |
Alkali resistance | Resistant to weak alkali | Excellent | High | Resistant to strong alkali |
Electrical conductivity | Very poor | Fairly good | Excelletn | So-so |
Elongation at break | 30%-40% | 18%-45% | Better than terylene | 12%-25% |
Recovery property | Excellent | 90% up recovery rate at 10% longation | Slightly better than terylene | Fairly poor |
Wear resistance | Excellent | Excellent | Good | Fairly good |
Thermal endurance | 170 °C | 130 °C slight shrink | 90 °C slight shrink | 100 °C shrink |
Softening point | 230 -240 °C | 180 °C | 140 -150 °C | 200 °C |
M.P. | 255 -265 °C | 210 -215 °C | 165 -170 °C | 220 °C |
Common types of filter cloth: | ||
filter cloth housing | Embedding type anti-seepage filter cloth | |
Compound filter cloth |