Rice husk ash as filler in tread compounds to improve rolling resistance

AUTOR(ES)

Fernandes, Mônica Romero Santos, Sousa, Ana Maria Furtado de, Furtado, Cristina Russi Guimarães

FONTE

Polímeros

DATA DE PUBLICAÇÃO

2017-03

RESUMO

Abstract In the tire industry carbon black is being replaced by silica as a filler in recent due to the development of “green tires”. Amorphous precipitated silica in combination with a silane coupling agent as a filler in tread compounds can result in fuel savings of 3% to 4% compared to a tire having treads made from compounds with carbon black. This means a 20% reduction of the rolling resistance and consequently lower greenhouse gas emissions. On the other hand, rice is one of the most important food crops generating around 22% in weight of husk during its milling, a material that is mainly used as fuel for energy generation, resulting in ash. Rice husk ash (RHA) contains over 70% of silica in amorphous form. In this paper we evaluated the effect of replacing carbon black with RHA in a basic tread formulation. Compounds mechanical, dynamic properties and morphology were analyzed.

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