THE EFFECT OF CHROMIC-ACID TREATMENT ON THE MECHANICAL AND TRIBOLOGICAL PROPERTIES OF ARAMID FIBER-REINFORCED ULTRA-HIGH-MOLECULAR-WEIGHT POLYETHYLENE COMPOSITE

Citation
Jm. Hofste et al., THE EFFECT OF CHROMIC-ACID TREATMENT ON THE MECHANICAL AND TRIBOLOGICAL PROPERTIES OF ARAMID FIBER-REINFORCED ULTRA-HIGH-MOLECULAR-WEIGHT POLYETHYLENE COMPOSITE, Journal of materials science. Materials in medicine, 9(10), 1998, pp. 561-566
Citations number
61
Categorie Soggetti
Engineering, Biomedical","Materials Science, Biomaterials
ISSN journal
09574530
Volume
9
Issue
10
Year of publication
1998
Pages
561 - 566
Database
ISI
SICI code
0957-4530(1998)9:10<561:TEOCTO>2.0.ZU;2-7
Abstract
Surface oxidation of ultra-high molecular weight polyethylene (UHMWPE) powder has an influence on the mixing procedure of chopped fibres and UHMWPE powder. Due to this oxidation hydrogen bonds can be formed bet ween the fibres and powder particles, leading to a more homogeneous fi bre-powder mixture. This treatment improves the fibre-matrix interface and thus the physical properties of the composite. Chromic acid treat ment also has an influence on the mechanical and tribological properti es of the aramid-UHMWPE composite. Although only a relatively small im provement is observed in the modulus, yield stress and stress at break , of 33, 17 and 9%, respectively, a substantial enhancement in wear re sistance of 117% is observed.