Effect of silane on the dispersion and properties of silica in natural rubber for use in tyre tread compounds

Lawton J.M.D., . and Ansarifar A., . and Nijhawan R., . Effect of silane on the dispersion and properties of silica in natural rubber for use in tyre tread compounds. pp. 149-166. ISSN 1511-1768

Synthetic silicas are used increasingly in tyre tread compounds. Their benefit to rubber propertiesis problematic unless a silane coupling agent is also used. The silane is added to silica often by in situ reaction. The effect of the coupling agent bis-(3-triethoxysilylpropyl) tetrasulphane (TESPT)on the properties of a sulphur-cured natural rubber compound containing a small amount of precipitated amorphous white silica was studied. TESPT was added to bind the silica to the rubber and to prevent it from interfering with the reaction mechanism of the sulphur-cure system. This study showed that bound rubber hardness cyclic fatigue life and cohesive tear strength were improved whereas tensile strength elongation at break and stored energy density at rupture deteriorated with the addition of TESPT to the rubber. The inclusion of TESPT offered limited benefits to the silica dispersion and rubber properties.

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Abstract

Synthetic silicas are used increasingly in tyre tread compounds. Their benefit to rubber propertiesis problematic unless a silane coupling agent is also used. The silane is added to silica often by in situ reaction. The effect of the coupling agent bis-(3-triethoxysilylpropyl) tetrasulphane (TESPT)on the properties of a sulphur-cured natural rubber compound containing a small amount of precipitated amorphous white silica was studied. TESPT was added to bind the silica to the rubber and to prevent it from interfering with the reaction mechanism of the sulphur-cure system. This study showed that bound rubber hardness cyclic fatigue life and cohesive tear strength were improved whereas tensile strength elongation at break and stored energy density at rupture deteriorated with the addition of TESPT to the rubber. The inclusion of TESPT offered limited benefits to the silica dispersion and rubber properties.

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Item Type:	Article
AGROVOC Term:	Dispersions
AGROVOC Term:	Silica
AGROVOC Term:	Natural rubber
AGROVOC Term:	Tyres
AGROVOC Term:	Carbon black
AGROVOC Term:	Electron microscopy
AGROVOC Term:	Technical properties
AGROVOC Term:	Rubber industry
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:28
URI:	http://webagris.upm.edu.my/id/eprint/23133

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