Rubber and a functional group undergo vulcanization, a chemical process that is typically triggered by heat. As a result, the product is more durable, elastic, resilient, and resistant to solvent action and temperature fluctuations than the original polymer was.

Chemical vulcanization involves heating rubber at 140–160 °C with sulphur, an accelerator, and an activator. Longer rubber molecules are cross-linked during the process to improve elasticity, resilience, tensile strength, viscosity, hardness, and weather resistance.

Rubber is reduced in size by vulcanization without changing or deforming its shape. Additionally, it keeps its shape, guarding against further deformation of the rubber.

Using the most common vulcanizing agent to vulcanize the rubber Rubber that is not saturated begins to cross-link when sulphur is added. Sulphur, as a vulcanizing agent, does not, however, work quickly. Chemical reactions involving rubber and hydrocarbons frequently include double bonds or C==C, and each cross-linking requires 40–55 sulphur atoms without an accelerator.

The torque range of NextGen’s Oscillating / Automatic Disc Rheometer (ODR) is 0 – 20nm

Click here to obtain a personalized quote from NextGen Material Testing.