Monsanto Processability Tester

The Monsanto Processability Tester is a widely used instrument in the rubber industry for measuring the viscosity of rubber compounds during processing. It is named after its developer, the Monsanto Chemical Company. The tester consists of a cylindrical die with a diameter of 0.1 inches and a length of 1 inch. A small amount of … Continued

Garvey Die Extrusion Grading System

The Garvey Die Extrusion test is a widely used method for evaluating the processability of rubber compounds. It involves measuring the pressure required to extrude a rubber sample through a standardized die under controlled conditions. The test is typically conducted using a Garvey die, which consists of a cylindrical cavity with a 0.3-inch diameter and … Continued

Creep

Creep is a phenomenon that occurs in rubber materials when they are subjected to a constant load or stress over time. When a rubber material is compressed or stretched and held under a constant load, it will continue to deform over time even if the load remains constant. This process is called creep and is … Continued

Stress Relaxation

Stress relaxation is a phenomenon that occurs in rubber materials when they are subjected to a constant deformation or strain over time. When a rubber material is stretched or compressed and held in a deformed state for a period of time, its stress level will decrease over time while the deformation remains constant. This process … Continued

Set Recovery

Set recovery is a measure of the ability of rubber materials to return to their original shape after being subjected to deformation or compression. When a rubber material is compressed or stretched, it undergoes a process called “set” or “permanent set,” where it retains a portion of the deformation even after the load is removed. … Continued

Fatigue Life

Fatigue life refers to the number of cycles of stress a material can withstand before it fails due to fatigue. When a material is subjected to repeated cyclic loading, cracks can form and propagate through the material, leading to failure. A shortening of the fatigue life of a material means that the material can withstand … Continued

ASTM D2000 Material Designation (Type & Class)

ASTM D2000 is a widely used standard specification that defines the requirements for rubber products in terms of their physical and chemical properties. The specification includes a system of type and class designations that help to identify the properties of rubber materials and their intended applications.   The ASTM D2000 type designation consists of two … Continued

ANOVA Analysis of Variance

ANOVA (Analysis of Variance) is a statistical method used to test for significant differences between two or more groups or variables. It is often used in research studies to analyze the effects of one or more independent variables on a dependent variable. In an ANOVA study, the researcher first identifies the independent variables that are … Continued