Determinación de los efectos de agregados en mezclas de caucho auto extinguible.

Abstract

The company Icobandas SA in its continuous improvement and creation of new products, decided to start the investigation of conveyor belts for use in underground mining, due to the risks that have occurred in recent years with the use of conveyor belts in mining Underground. In the development of this work, a formulation for self-extinguishing rubber that complies with standard mechanical properties was documented and carried out with the purpose of offering customers an adequate service based on research and experimentation to comply with international standards (ISO 340) that governs the implementation of fire-retardant conveyors in underground mining. In this work, a methodology is developed that starts from a careful selection of ingredients to be used to obtain a material with fire retardant properties, as well as properties such as wear resistance and fatigue resistance. The measurement of these properties starts with the fire resistance property which is based on the ISO 340 standard which consists of placing a rubber sample exposed to flame for one minute and evaluating the time it takes to shut down after being eliminated The flame source, then the wear resistance must be evaluated by means of Universidad de Pamplona Pamplona - Norte de Santander - Colombia Tels: (7) 5685303 - 5685304 - 5685305 - Fax: 5682750 - www.unipamplona.edu.co Formando líderes para la construcción de un nuevo país en paz xii the loss of weight of the material in a specific range of cycles of the abrasimeter, increasing this index decreases the resistance to wear. Fatigue and adhesion, the first one evaluated the failure due to repetitive loads; Which includes the initiation and propagation of a crack or set of cracks to the final failure by fracture and the second is performed to determine the adhesion strength of the material or the strength of the adhesive bond between two materials, in this case the adhesion between the Rubber and canvas. With respect to the property of fire resistance it is concluded that using 70 phr of alumina trihydrate the fire effect is observed and there is little deterioration in the rubber samples, in terms of the abrasion property, it was concluded that there is a good abrasion Employing large amounts of carbon black, but this property is affected with large amounts of flame retardants such as alumina trihydrate and zinc borate. It is also necessary to increase the amount of chemical load to the rubber matrix increases hardness and reduces abrasion. Finally a formulation is defined that complies with all the properties already mentioned and is established as the new formula of self-extinguishing rubber for the company Icobandas S.A.