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发表于 2009-6-23 11:44:26
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sintering of ultra high molecular weight polyethylene
Abstract. Ultra high molecular weight polyethylene (UHMWPE) is a high performance polymer having low
coefficient of friction, good abrasion resistance, good chemical resistance etc. It is used in shipbuilding, textile
industries and also in biomedical applications. UHMWPE is processed by powder processing technique because
of its high melt viscosity at the processing temperature. Powder processing technique involves compaction of
polymeric powder under pressure and sintering of the preforms at temperature above its melting point. In this
study, we report our results on compaction and sintering behaviour of two grades of UHMWPE with reference
to the powder morphology, sintering temperatures and strength development. |
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