|
Physical properties of filtering cloth materials |
””””””Material/
””properties |
Polyester fibre |
Polyamide fibre |
Polypropylene fibre |
Poly£vinyl alcohol fibre |
|
acid-resisting |
good |
weak |
good |
weak |
|
alkali-resisting |
weakness-resisting |
good |
good |
good |
|
splitting and elongation(%) |
20”«50 |
20”«40 |
18”«35 |
12”«26 |
|
Softening point(”ę) |
238”«240 |
180 |
140”«160 |
200”«230 |
|
melting point(”ę) |
255”«265 |
215”«220 |
165”«173 |
Non-clear |
|
specific weight |
1.38 |
1.14 |
0.91 |
1.26”«1.30 |
|
chemical items names |
polyethylence terephthakate |
polyamide |
polypropylene |
poly-vinyl alcohol |
|