Rubber adhesion at high rolling speeds

Roberts A. D., . Rubber adhesion at high rolling speeds. pp. 239-260. ISSN 0127-7065

A rolling drum apparatus has been constructed to measure the surface adhesion of rubber up to high speeds. In this a ball rolls freely on a continuous track of smooth-surfaced rubber. With speed increase the rolling resistance rises to a maximum then falls. The rise can be described in terms of a rate-dependent peel energy characteristic of the particular rubber compound under test. The fall at high speed appears due to a loss in grip either because of reduced contact duration or air film entrainment. Lost surface adhesion means that rolling resistance then becomes largely due to ploughing hysteresis in the bulk of the rubber. The relative importance of contact duration and air entrainment were assessed by study of such factors as rubber crosslink density glass transition temperature and ambient temperature. Repeated rolling over the same portion of rubber track caused surface roughening. Experimental evidence suggests that the rolling action pulls fragments of rubber out of the track at a rate that can be estimated from the crack-growth characteristic of the track vulcanisate.

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Abstract

A rolling drum apparatus has been constructed to measure the surface adhesion of rubber up to high speeds. In this a ball rolls freely on a continuous track of smooth-surfaced rubber. With speed increase the rolling resistance rises to a maximum then falls. The rise can be described in terms of a rate-dependent peel energy characteristic of the particular rubber compound under test. The fall at high speed appears due to a loss in grip either because of reduced contact duration or air film entrainment. Lost surface adhesion means that rolling resistance then becomes largely due to ploughing hysteresis in the bulk of the rubber. The relative importance of contact duration and air entrainment were assessed by study of such factors as rubber crosslink density glass transition temperature and ambient temperature. Repeated rolling over the same portion of rubber track caused surface roughening. Experimental evidence suggests that the rolling action pulls fragments of rubber out of the track at a rate that can be estimated from the crack-growth characteristic of the track vulcanisate.

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Item Type:	Article
AGROVOC Term:	Natural rubber
AGROVOC Term:	Measurement
AGROVOC Term:	Surface area
AGROVOC Term:	Rolling
AGROVOC Term:	Rotational speed
AGROVOC Term:	Speed
AGROVOC Term:	Ploughing
AGROVOC Term:	Cross-linking
AGROVOC Term:	Density
AGROVOC Term:	Relative humidity
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:28
URI:	http://webagris.upm.edu.my/id/eprint/23564

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