| 摘要 |
<p>A porous material of ultrahigh molecular weight polyethylene containing numerous interconnected pores, having permeability and being useful as filters, carriers and so forth; and a process for effectively producing said material. This material comprises minute particles of plasticized ultrahigh molecular weight polyethylene fused with one another so as to form interconnected pores communicating with the outer atmosphere. It is produced by injecting the plasticized ultrahigh molecular weight polyethylene into the cavity of a mold at a shear rate of 5 x 104 sec-1 or above and filling therein in such a manner that the ratio of G¿0? to V0 will be 0.7 g/cm?3¿ or less, wherein G¿0? represents product weight (g) and V0 represents product volume (cm?3¿).</p> |
