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Abstract
This paper presents the effect of variation in concentration of the components formulation of rubber (EPDM) and the vulcanizing conditions to minimize the required time to reach 90% of the required hardness of the vulcanized product. The study was carried out using a split design 211-7. The formulations were evaluated and optimal responses were generated separately for a desirability function. The results shown are employed in the development of unconventional manufacturing rubber process which improves the product quality characteristics in comparison with conventional processes used in the industry.
Significant: The contribution of this work is the optimization of a new process of rubber whose impact environmentally friendly by introducing natural fiber in the formulation and generating knowledge about the effect of the parameters-formulation process to obtain the best performance of a manufacturing process by desirability function.
Keywords
Vulcanized, desirability function, Fractional Designs, EPDM
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1. Introduction
The development of manufacturing processes for vulcanized products has generated a great interest in the rubber industry, creating several formulations that allow for optimization of quality characteristics of the process. There is little knowledge of the factors that have influence in the process such as activators, accelerants, load, vulcanizing time and mixing temperature. Adhesion is the key for success in a good design of a polymeric and natural fiber compound (date palm fiber). Studied the influence of the treatment concentrations of sodium hydroxide, fiber length, diameter of the fiber embedded in the epoxy matrix. The result revealed that the medium point of the sodium hydroxide treatment is the best, producing a fiber that can maintain a good interfacial adherence with the epoxy matrix. The size of the fiber has a great influence because obtained better results with 10 mm fiber length [1]. Using an injection molding process manufactured compounds of recycled low density polyethylene, wood flour and Pinus radiata cortex flour, where the effect of the flour contents and three physical-mechanical properties were evaluated. This analysis used comparative tests and multiple linear regression analysis. The flour content was found to be the variable with the greatest effect on evaluated properties. The obtained result was that the flour content is the variable that affects more the evaluated properties [2]. An experimental study was made...