of HDPE Porous Plastic
Throughout all HDPE porous plastic runs an intricate network of opencelled,
onmi-directional pores. These pores, which can be made in average pore
sizes down to one micron, give porous plastics their unique combination
of filtering capability and structural strength.
Unlike the direct passages in woven synthetic materials and metal screens,
the pores in porous plastic join to form many tortuous paths giving porous
plastics a dual filtering capability. Not only do they act as surface
filters by trapping particles large than their average pore size, they
also trap much smaller particulate matter deep in their complex channels
for a "depth filter" effect. This tortuous path structure is
so efficient that, as a rule of thumb, with an average pore size of 25
microns, offer you approximately the same filtration as many five micron-rated
HDPE can be used in continuous service at temperatures up to 180°F
(82°C) and intermittently at 240°F (116°C). If not stressed,
it is stable at 212°F (100°C) in continuous service.
HDPE Porous Plastics are naturally hydrophobic, but aqueous solutions
can be forced through under pressure. The material is cleanable with HCI
(muriatic acid) or chlorine.
Not recommended in presence of strong oxidizing acids, prolonged fire
and sunlight and solvents above 176°F (80°C).