Effect of different paraffin waxes and antiozonant on the processing and mechanical properties of natural rubber

Meskel Y. H., . and Ansarifar A., . and Ellis R. J., . and Kamaruddin A. N., . and Saeed F., . Effect of different paraffin waxes and antiozonant on the processing and mechanical properties of natural rubber. pp. 35-45. ISSN 1511-1768

Three commercial paraffin waxes (carbon numbers 20-40) and one alkyl-aryl-p-phenylene- diamine antiozonant were mixed individually with natural rubber to produce rubber compounds. The compounds contained a precipitated amorphous white silica nanofiller the surface of which was pre-treated with bis(3-triethoxysilylpropyl-)tetrasulphane (TESPT). The rubber compounds were cured via the tetrasulphane groups of TESPT by adding a sulphenamide accelerator and zinc oxide. The viscosity cure properties hardness tensile strength elongation at break stored energy density at break Youngs modulus modulus at different strain amplitudes tear strength and cyclic fatigue life of the rubber vulcanisates were measured. The viscosity scorch time and rate of cure increased but the optimum cure time decreased when the waxes and antiozonant were added to the rubber. The highest tensile strength stored energy density at break modulus at different strain amplitudes and the longest cyclic fatigue life were measured for the vulcanisate with the antiozonant. The rubber vulcanisate containing one of the waxes had the highest tear strength.

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Abstract

Three commercial paraffin waxes (carbon numbers 20-40) and one alkyl-aryl-p-phenylene- diamine antiozonant were mixed individually with natural rubber to produce rubber compounds. The compounds contained a precipitated amorphous white silica nanofiller the surface of which was pre-treated with bis(3-triethoxysilylpropyl-)tetrasulphane (TESPT). The rubber compounds were cured via the tetrasulphane groups of TESPT by adding a sulphenamide accelerator and zinc oxide. The viscosity cure properties hardness tensile strength elongation at break stored energy density at break Youngs modulus modulus at different strain amplitudes tear strength and cyclic fatigue life of the rubber vulcanisates were measured. The viscosity scorch time and rate of cure increased but the optimum cure time decreased when the waxes and antiozonant were added to the rubber. The highest tensile strength stored energy density at break modulus at different strain amplitudes and the longest cyclic fatigue life were measured for the vulcanisate with the antiozonant. The rubber vulcanisate containing one of the waxes had the highest tear strength.

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Item Type:	Article
AGROVOC Term:	Paraffin
AGROVOC Term:	Waxes
AGROVOC Term:	Glycols
AGROVOC Term:	Swelling
AGROVOC Term:	Natural rubber
AGROVOC Term:	Mechanical properties
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:28
URI:	http://webagris.upm.edu.my/id/eprint/22989

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