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

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