Process autoclave

medical

The autoclave vulcanisation process is crucial in the manufacture of rubber products, as it allows raw rubber to be converted into final products with the physical and chemical properties required for a wide variety of industrial applications, from tyres and seals to components for the aerospace and medical industry. Among the main advantages, vulcanisation makes the material much more durable, resistant to wear, tensile and abrasion resistant, improves dimensional stability, temperature and chemical resistance, as well as elasticity and flexibility. The vulcanization process basically consists of placing the molded rubber parts into the autoclave, where they are subjected to heat and pressure for a specific period of time, usually between 15 minutes and several hours, depending on the thickness and complexity of the parts. During the process, the chemical compounds present in the rubber mixture, especially the vulcanizing agents, react with the rubber polymers to form cross-links between the polymer chains. These cross-links are responsible for improving the mechanical and chemical properties of the rubber. There are several autoclave vulcanization methods: – Direct steam vulcanization: Steam is introduced directly into the autoclave to provide the necessary heat for the vulcanization of the rubber. – Hot air vulcanization: In this process, compressed air is injected to pressurize the autoclave and an air circuit is created inside that circulates through a battery of electrical resistances or a coil of steam or thermal oil to increase the temperature.