Ultrahigh molecular weight polyethylene and lightly-filled compo

Details Ultrahigh molecular weight polyethylene and lightly-filled compo Ultrahigh molecular weight polyethylene and lightly-filled compo

1991-04-11

1994-03-08

Thibodeau, Paul J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

428331, 428332, 428402, 428407, 428521, 526352, 5263522, B32B 516

Patent

active

052925846

ABSTRACT:
Homogeneous, particulate composites are provided, of about 75-99.5 weight percent ultrahigh molecular weight polyethylene (UHMWPE) and about 0.5-25 weight percent of at least one filler compound, and wherein the composites have a surface area of at least about 4 m.sup.2 /g. The particulate UHMWPE is also provided without the filler. Dense, load-bearing articles of these materials are formed by cold-pressing and free-sintering procedures. Cold-pressable, free-sinterable blends of commercial UHMWPE containing at least 25 weight percent of the composites or unfilled UHMWPE of the invention are also provided.

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