Wear Resistance of Elastomeric Based Composites by Continuous Multi-Cycle Indentation Used in Manufacturing Engineering

Abstract

Wear resistance is an important rubber compound property related to useful product life. The rubber compound properties that affect wear behavior are very complicated. Wear is related to a rubber compound’s cut resistance, tear resistance, fatigue resistance hardness, etc. The most commonly used test method to determine the wear resistance of rubber materials is abrasion test. Tested compounds are usually compared on a “volume loss” basis which is calculated from the weight loss and density of the compound. This method is known to be variable and doesn’t give additional information for the wear behavior. For this reason we propose alternative approaches for examination of the wear behavior of rubber composites, giving information not only for the wear resistance but also for elastic the modulus, stiffness of the material, damage mechanism, etc. Continuous multi-cycle indentation is used to determine the indentation hardness, elastic modulus and the stiffness with two indenter types –Vickers and sphero-conical. Comparison of both results is made in order to investigate the effect of the indenter type.

Investigation on strategies for optimizing process definition in rubber processing: A study on mechanical and chemical properties of vulcanizates as basis for the development of a new calculation model for quality prediction

“…Thereby, measurements are conducted at various temperatures to obtain the respective vulcanization isotherms, which are then normalized to display the temperature-dependent progress of the degree of cure over time. 3,[12][13][14][15][16] From the results, process settings are defined, aiming, for example, at a degree of cure of 0.8. In addition, and in the sense of productivity, the cycle time is considered as well.…”

“…First and foremost, measuring the reaction kinetics with proper devices, for example, a rubber process analyzer (RPA), is certainly the common method that is used to derive the definitions required. Thereby, measurements are conducted at various temperatures to obtain the respective vulcanization isotherms, which are then normalized to display the temperature‐dependent progress of the degree of cure over time 3,12–16 . From the results, process settings are defined, aiming, for example, at a degree of cure of 0.8.…”