Reducing friction with Al2O3/SiO2-nanoparticles in NBR

被引：10

作者：

Busse, L. ^{[1
]}

Peter, K. ^{[2
]}

Karl, C. W. ^{[1
]}

Geisler, H. ^{[1
]}

Klueppel, M. ^{[1
]}

机构：

[1] Deutsch Inst Kautschuktechnol eV, D-30519 Hannover, Germany

[2] RWTH Aachen eV, DWI, D-52074 Aachen, Germany

来源：

WEAR | 2011年 / 271卷 / 7-8期

关键词：

Sliding friction; PAOS; Nanoparticles; Tribology; NBR elastomer; Rubber; CONTACT MECHANICS; SLIDING FRICTION; RUBBER-FRICTION; ELASTOMERS;

D O I：

10.1016/j.wear.2011.05.017

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Friction is a phenomenon that is sometimes desired and sometimes to be avoided. In the past, material development grants have not focused on this task. In this article, we present a new and alternative method of reducing elastomer friction when sliding on different kinds of substrates by inducing hard alumina/silica nanostructures on the elastomer surface. The formation of Al2O3/SiO2 nanostructures is based on an in situ sot-gel process of a dispersion of spherical aluminum oxide nanoparticles in a silica liquid precursor polymer - hyperbranched polyalkoxysiloxane (PAOS) - in an elastomer mixture. The influence of variable amounts of Al2O3/PAOS dispersion, variable amounts of carbon black fillers and annealing time on the friction coefficient is studied fora large velocity range. Experiments were conducted with and without lubricant and discussed with regard to material and surface properties of the samples. It is found that sufficient PAOS concentrations significantly decrease friction for all systems and prevent stick-slip phenomena. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：1066 / 1071

页数：6

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