Natural rubber truck tyre compounds for improved wear performance

Wallace I. R, . and Baker C. S. L., . Natural rubber truck tyre compounds for improved wear performance. pp. 270-285. ISSN 0127-7065

The trend to pre-cure treads has reduced the need to use NR in heavy-duty truck tyre retreading. Thus NR compounds have had to compete solely on a tread life basis where under normal highway conditions with relatively low severity SBR/BR compounds would probably be found superior owing to the reversion characteristics of NR. A high stearic acid semi-EV system has been developed for NR whose abrasion resistance does not as is usually observed deteriorate on overcure. In fleet trials 80/20 NR/BR treads based on this formulation were found to come close to a high mileage SBR/BR tread under low severity conditions and surpass it under high severity conditions. Rig testing has also shown the new NR compound to have improved rolling resistance and lower running temperatures. In a second series of trials NR dominant compounds with this new curing system and an increased proportion of BR were examined and a formulation has been found which has a longer tread life than the synthetic control under low severity conditions.

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Abstract

The trend to pre-cure treads has reduced the need to use NR in heavy-duty truck tyre retreading. Thus NR compounds have had to compete solely on a tread life basis where under normal highway conditions with relatively low severity SBR/BR compounds would probably be found superior owing to the reversion characteristics of NR. A high stearic acid semi-EV system has been developed for NR whose abrasion resistance does not as is usually observed deteriorate on overcure. In fleet trials 80/20 NR/BR treads based on this formulation were found to come close to a high mileage SBR/BR tread under low severity conditions and surpass it under high severity conditions. Rig testing has also shown the new NR compound to have improved rolling resistance and lower running temperatures. In a second series of trials NR dominant compounds with this new curing system and an increased proportion of BR were examined and a formulation has been found which has a longer tread life than the synthetic control under low severity conditions.

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Item Type:	Article
AGROVOC Term:	Natural rubber
AGROVOC Term:	Tyres
AGROVOC Term:	Trucks
AGROVOC Term:	Physical properties
AGROVOC Term:	Hardness
AGROVOC Term:	Tensile strength
AGROVOC Term:	Strength
AGROVOC Term:	Heat resistance
AGROVOC Term:	Vehicle performance
AGROVOC Term:	Performance testing
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:28
URI:	http://webagris.upm.edu.my/id/eprint/23620

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