Abstract
Objectives. To investigate the possibility of using a cheaper ingredient, such as magnetite, in the synthesis of rubber compounds based on butadiene–styrene rubber by examining its effect on the process of sulfuric vulcanization of butadiene–styrene rubber in the presence of various accelerators.Methods. The influence of magnetite on the vulcanization kinetics was studied using an Alpha Technologies PRPA 2000 rotorless rheometer. Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) were performed using a Mettler Toledo TGA/DSC 2 device to evaluate the effect of magnetite on the butadiene–styrene rubber-based vulcanizates’ oxidation.Results. Magnetite was found to affect the kinetics of SBR-1500 butadiene–styrene rubber sulfuric vulcanization in the presence of thiazole-type accelerators (2-MBT, 2-MBS); in contrast, magnetite was inactive in the case of diphenylguanidine, sulfenamide T, and tetramethylthiuram disulfide. The obtained TGA/DSC data showed that magnetite has no significant effect on the butadiene–styrene rubber-based vulcanizates’ oxidation and thermal destruction.Conclusions. The obtained data confirmed magnetite’s capability to act as a butadiene–styrene rubber sulfuric vulcanization activator in the presence of various accelerators. The most significant effect was observed in the presence of thiazole-type accelerators.
Highlights
Influence of iron ore concentrate on the kinetics of butadiene–styrene rubber-based blend curing in the presence of different accelerators
To investigate the possibility of using a cheaper ingredient, such as magnetite, in the synthesis of rubber compounds based on butadiene–styrene rubber by examining its effect on the process of sulfuric vulcanization of butadiene–styrene rubber in the presence of various accelerators
Magnetite was found to affect the kinetics of SBR-1500 butadiene–styrene rubber sulfuric vulcanization in the presence of thiazole-type accelerators (2-MBT, 2-MBS); in contrast, magnetite was inactive in the case of diphenylguanidine, sulfenamide T, and tetramethylthiuram disulfide
Summary
Влияние железорудного концентрата (магнетита) на кинетику вулканизации резиновых смесей на основе бутадиен-стирольного каучука в присутствии различных ускорителей. Изучить возможность применения в рецептурах резиновых смесей на основе бутадиен-стирольного каучука более дешевого ингредиента – магнетита путем оценки его влияния на процесс серной вулканизации бутадиен-стирольного каучука в присутствии различных ускорителей. Методами термогравиметрического анализа (ТГА) и дифференциально-сканирующей калориметрии (ДСК) оценили влияние магнетита на процесс окисления вулканизатов на основе бутадиен-стирольного каучука на приборе Mettler Toledo TGA/DSC 2. Что магнетит влияет на кинетику серной вулканизации бутадиен-стирольного каучука SBR-1500 в присутствии ускорителей тиазолового ряда (дибензотиазолдисульфид, 2-меркаптобензотиазол), в то время как в случае с 1,3-дифенилгуанидином, сульфенамидом Т (N-трет-бутил-2-бензтиазолсульфенамид) и тиурамом (тетраметилтиурамдисульфид) магнетит малоактивен. Исследовано влияние магнетита на кинетику процесса серной вулканизации бутадиен-стирольного каучука в присутствии различных ускорителей.
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