Abstract
Studies of experimental adhesion modifiers based on a mixture of fatty acids from the production of light vegetable oils. The properties of rubber compounds and their vulcanizates obtained using experimental adhesion promoters KK with cobalt content from 7.5 to 16.5% are investigated. The plastic-elastic and vulcanization properties of the properties of breaker rubber compounds based on polyisoprene, the physical and mechanical properties of breaker rubbers and the bond strength in the “rubber-brass-plated steel cord system” were studied. When testing belt rubbers containing experienced adhesion promoters or an imported analog of Manobond 680C, the following features were revealed. The plasticity of the prototypes was in the range of 0.2-0.4. This indicates satisfactory processing properties. The Mooney viscosity of the prototypes was lower than that of the production sample. The use of experienced adhesion promoters instead of the analogue (Manobond 680C) increases the resistance to scorching. On the basis of the analysis of elastic-strength properties, it was found that in terms of the conditional tensile strength, the prototypes were inferior to the serial ones. However, rubbers containing the KK-12, KK-13.5, KK-15 promoters met the control standards. The tensile elongation at break of the experimental rubbers is higher than that of the serial sample. This may indicate the formation of a more uniform cure network in the presence of the test products. When testing rubber-metal-hard composites, it was noted that, under normal conditions, the experienced adhesion promoters have advantages over Manobond 680C. However, at elevated temperatures, under conditions of salt and steam-air aging, they are slightly inferior to Manobond 680C. It has been established that the experimental adhesion promoters provide the required set of technical properties of belt rubbers with a CO2 + content of 12–16.5% wt. Thus, it is possible to recommend the adhesion promoters KK 12, KK-13.5, KK 15 for practical use in the composition of belt rubber compounds. This will allow replacing a foreign-made product and reducing the cost of production.
Highlights
120 °С должно составлять от 7 до 20 мин для к скорчингу всех исследуемых смесей, оцененная мягких резиновых смесей, от 20 до 35 мин – по скорости подвулканизации, удовлетворидля большинства резиновых смесей, от 35 до тельная
Studies of experimental adhesion modifiers based on a mixture of fatty acids from the production of light vegetable oils
The plastic-elastic and vulcanization properties of the properties of breaker rubber compounds based on polyisoprene, the physical and mechanical properties of breaker rubbers and the bond strength in the “rubber-brass-plated steel cord system” were studied
Summary
Оригинальная статья/Research article Open Access Available online at vestnik-vsuet.ru. Исследование свойств резино-металлокордных композитов в присутствии новых промоторов адгезии. Исследованы свойства резиновых смесей, вулканизатов, резино-металлокордных композитов, полученных с использованием опытных промоторов адгезии КК с содержанием кобальта от 7,5 до 16,5 %. В ходе испытаний брекерных резиновых смесей, полученных с использованием опытных промоторов адгезии и импортного аналога Манобонд 680С выявлено: пластичность опытных брекерных резиновых смесей находилась в пределах 0,2-0,4, что указывает на удовлетворительные технологические свойства; вязкость по Муни опытных образцов ниже, чем серийного образца. Анализ упруго-прочностных свойств брекерных резин показал, что по условной прочности при растяжении опытные образцы уступают серийному, но резины, содержащие промоторы КК-12, КК-13,5, КК-15 соответствуют нормам контроля. При испытании резино-металлокрдных композитов отмечено, что при нормальных условиях опытные промоторы адгезии имеют преимущества по сравнению с Манобондом 680С. Установлено, что опытные промоторы адгезии обеспечивают требуемый комплекс технических свойств брекерных резин при содержании в них Со2+ 12–16,5% мас. Research of the properties of rubber-cord composites in the presence of new adhesion promoters
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