Influence of Various Types of Fatty Acid Zinc Soaps on the Dynamic Mechanical Properties of Silica Filled Composites Based on Natural Rubber

O. A. Al-Hartomy(1), A. A. Al-Ghamdi(2), S. A. Fahra Al-Said(3), N. Dishovsky(4*), M. Mihaylov(5), M. Ivanov(6)

(1) Department of Physics, Faculty of Science, King Abdulaziz University, Saudi Arabia
(2) Department of Physics, Faculty of Science, King Abdulaziz University, Saudi Arabia
(3) Department of Physics, Faculty of Science, King Abdulaziz University, Saudi Arabia
(4) Department of Polymer Engineering, University of Chemical Technology and Metallurgy, Bulgaria
(5) Department of Polymer Engineering, University of Chemical Technology and Metallurgy, Bulgaria
(6) Department of Polymer Engineering, University of Chemical Technology and Metallurgy, Bulgaria
(*) Corresponding author


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Abstract


The aim of this study is to investigate the influence of different fatty acid zinc salts on the dynamic mechanical properties of the composites based on natural rubber, filled with silica and containing bi-functional organosilanes in the presence or absence of zinc oxide. The results achieved demonstrate that the combination of zinc oxide and zinc soaps has a strongly expressed anti-reversion effect. The absence of reversion in the cure curves of the rubber compounds, comprising a combination of zinc oxide, stearic acid and zinc soaps, results in retention of their dynamic properties even after overcure
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Keywords


Rubber; Vulcanization; Activators; Reversion

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References


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