History of rubber vulcanization systems
The vulcanization reaction was discovered in 1839 by Charles Goodyear, an American, who mixed sulfur yellow with rubber and heated it to produce a material with better properties. This discovery was the most important milestone in the history of rubber development. The Englishman Hancock first used this method for industrial production, his friend Brockeden called this production process vulcanization, until today, rubber process scientists still use this term.
Resin vulcanization and quinone oxime vulcanization methods were discovered one after another in 1940; sulfur-giving body vulcanization was discovered in 1943. After the Second World War, there are new vulcanization systems, such as radiation vulcanization found in the 50s, the 70s of the urethane vulcanization system and the 80s of the proposed balanced vulcanization system and so on. Nevertheless, sulfur yellow is still the best vulcanizing agent due to its low price, abundant resources and good vulcanizing performance. After more than 100 years of research and development, has formed several basic sulfur yellow vulcanization system at different levels, the composition level is expressed as follows.
Vulcanization reaction is a complex chemical reaction process involving multiple components. It contains a series of chemical reactions between rubber molecules and vulcanizing agent and other cooperating agents, accompanied by a variety of side reactions in the formation of the mesh structure. Among them, the reaction between rubber and vulcanizing agent is dominant, which is the basic reaction to form the spatial network.
Environmental protection. Avoid workshop dust pollution, protect workers' health.
Rubber additives are chemicals that bring high added value to rubber products and can reduce costs. However, the traditional rubber additives not only produce a lot of dust and toxic and harmful gases when used,
A rubber vulcanizing agent is a substance that induces a vulcanizing reaction in rubber. Vulcanization is the process by which rubber undergoes a chemical reaction to form a cross-linked structure, increasing elasticity and wear resistance. In industrial production, rubber vulcanizing agent is widely used in automobile tires, rubber hoses, flooring, cables and other fields.
Rubber vulcanizing agent manufacturers tell you that the activation temperature is low, the curing speed is fast, and the crosslinking degree is high. However, it is easy to burn, poor flatness, improper vulcanization operation, easy to cause insufficient sulfur or too much sulfur. It is suitable for fast vulcanizing thin products of butyl rubber and EPDM rubber, room temperature vulcanizing products, latex products and vulcanizing products.
Rubber vulcanizing agent is a substance that enables natural rubber and synthetic rubber to cross-link at high temperatures, thus improving rubber properties. Rubber vulcanizing agent has the following advantages:
At first glance, vulcanizing agents appear to be chemicals used in our industrial production or in certain specific situations, but we should never underestimate the role and use of our vulcanizing agents.