Activator definition and meaning
![a tire on a conveyor belt in a factory.](https://rerev.com/wp-content/uploads/tire-activator.jpg)
![A beautiful woman in a red jacket sitting in a car.](https://rerev.com/wp-content/uploads/lilit-farmazian-32x32.jpg)
Activator chemicals are typically sulfur-based compounds, which act as catalysts to promote vulcanization in car tires. Other types of activators, such as zinc oxide, can also be used. The amount of activator used in a rubber compound varies depending on the type of vulcanization process being used and the desired properties of the finished product.