Influence of adding graft UHMWPE and nanofillers onto wear resistance of Ultra-High Molecular Weight Polyethylene (UHMWPE) mixture

S. Piriyayon, S. V. Panin, L. R. Ivanova

Результат исследований: Материалы для книги/типы отчетовМатериалы для конференции

Аннотация

UHMWPE (Ultra High Molecular Weight Polyethylene) is widely used in the medical application and is a promising structural material for application in mining, chemical, mechanical engineering. Having very low friction coefficient it might be used even instead of metal friction parts but it calls for further increase of its physical mechanical properties. It is one of the very high resistant materials but it is difficult to bond with other substances. One of perspective ways to bond UHMW-PE with filler is its grafting. There is one more interesting approach, when graft UHMWPE is added to UHMW-PE in order to react both with latter and nanofiller. This might be achieved be adding different kind of fillers, in particular nanoscale ones. In this paper we attempted to increase the mixture ability of UHMWE-graft-SMA with Cu, CNF and Al 2O3 for enhancing its wear resistance properties and study the changing of hardness after mixing. We employed UHMWPE powder and graft UHMWPE with anhydride and carboxyl functional groups realized by modification of the polymers in reacting gases (UHMWPE-g-SMA). It was assumed that grafting will provide adhesion between UHMWPE particles. UHMWPE-g-SMA and UHMWPE were mixed using a high speed homogenizer in dry form. The mixture was pure UHMWPE with 0, 3, 5, 10 and 20 wt% of UHMWPE-g-SMA. This material is denoted as UHMWPE-g 0, 3, 5, 10, 20 respectively. And then add 0.5% CNF (Carbon Nano Fiber), 0.5% Cu (nanosize) and 0.5% Al2O3 (nanosize) to their mixture. The wear resistance of UHMWPE + UHMWPE-g-SMA specimens is increased when UHMWPE-g-SMA is mixed with UHMWPE powder and nanofillers. Cu, CNF and Al2O3 nano filler were added to UHMWPE the wear intensity is rather different from UHMWPE in initial state (pure) and give rise to increase wear resistance. The results of the wear tests have shown that the highest wear resistances of each group of fillers are UHMWPE-g 3 with 0.5% Cu, UHMWPE-g 3 with 0.5% CNF and UHMWPE-g 10 with 0.5% Al2O3. However, in contrast with this result, wear resistances is increased when UHMWPE-g-SMA and nanofillers were added. In case of hardness property, hardness does not change effectively.

Язык оригиналаАнглийский
Название основной публикацииProceedings - 2012 7th International Forum on Strategic Technology, IFOST 2012
DOI
СостояниеОпубликовано - 1 дек 2012
Событие2012 7th International Forum on Strategic Technology, IFOST 2012 - Tomsk, Российская Федерация
Продолжительность: 18 сен 201221 сен 2012

Конференция

Конференция2012 7th International Forum on Strategic Technology, IFOST 2012
СтранаРоссийская Федерация
ГородTomsk
Период18.9.1221.9.12

ASJC Scopus subject areas

  • Management of Technology and Innovation

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