The substances that can vulcanize rubber under certain conditions are collectively called vulcanizing agents. The so-called vulcanization is the transformation of the linear molecular structure of rubber into a three-dimensional mesh structure through the "bridging" of vulcanizing agents, which leads to a significant improvement of the mechanical and physical properties of rubber.

Rubber vulcanizing agents include elemental sulfur, selenium, tellurium, sulfur-containing compounds, peroxides, quinones, amines, resins, metal oxides, and isocyanates. The most commonly used are elemental sulfur and sulfur-containing compounds.

Sulfur and carbon black are added to raw rubber and heated at high pressure to turn it into vulcanized rubber, a process called vulcanization. But to achieve the ideal vulcanization process, in addition to the selection of the best vulcanization conditions, the choice of compounding agent, especially the choice of accelerator is of decisive significance.

The vulcanizing agent is divided into two categories: inorganic and organic. The former category has sulfur yellow, sulfur chloride, selenium, tellurium, etc.. In the latter category there are sulfur-containing accelerators (such as accelerator TMTD), organic peroxides (such as benzoyl peroxide), quinone oxime compounds, polysulfide polymers, ethyl carbamate, maleimide derivatives, etc.
Rubber vulcanizing agents include elemental sulfur, selenium, tellurium, sulfur-containing compounds, peroxides, quinones, amines, resins, metal oxides, and isocyanates. Elemental sulfur and sulfur-containing compounds are the most commonly used.
Elemental sulfur and sulfur-containing compounds are the most commonly used. Its sulfurizing agents are harmful substances harmful to people
The common industrial sulfur additives TMTD, TETD, etc. can produce carcinogenic N-nitrosodimethylamine when vulcanized.
Currently platinum vulcanizing agent (low vulcanization temperature, fast vulcanization speed) as a vulcanizing agent for silicone rubber in some special products are important applications
The vulcanizing agent is suitable for all kinds of natural rubber and synthetic rubber, according to the need, different varieties of vulcanizing agent can be used together.