Rubber vulcanizing agent
Rubber additives have many different kinds, the role is also complex, the current international use of a total of more than 3000 kinds. According to their nature, can be classified as the following categories: curing agent, accelerator, active agent, reinforcing filler, plasticizer, antioxidant, coloring agent, and latex special additives and other special purpose additives. One curing agent is an important family of rubber additives, let us know.
Rubber vulcanization refers to the rubbery linear macromolecular chain through the chemical cross-linking to form three-dimensional network structure of the chemical process. Through this process, the chemical structure of rubber has undergone fundamental changes, and the performance was significantly improved. Therefore, the rubber vulcanization agent as a necessary cross-linking agent, its classification has become a popular concern.
Rubber vulcanization agent can make the molecular chain of rubber from the cross-linking reaction, the linear molecules to form three-dimensional network structure, plasticity decreased, the elastic strength of the material.
In the rubber vulcanization system, the earliest use of curing agent is sulfur, rubber crosslinking process was named vulcanization. With the development of rubber science, it was found that the traditional sulfur system can not meet the needs of rubber in actual production. The new vulcanizing agents such as peroxides, metal oxides, resin compounds, quinone derivatives and other non-sulfur vulcanizing agents It came into being, and in the rubber vulcanization process play an increasingly important role.