quality assurance nigeria vulcanizing agent insoluble sulfur
quality assurance nigeria vulcanizing agent insoluble sulfur
quality assurance nigeria vulcanizing agent insoluble sulfur
quality assurance nigeria vulcanizing agent insoluble sulfur
quality assurance nigeria vulcanizing agent insoluble sulfur
  • Which vulcanizing agent is used in a rubber compound?
  • Three types of the vulcanizing agent are extensively used; the sulphur, insoluble sulphur, and peroxides. After all, sulphur is the most generic vulcanization agent as it is easily available, inexpensive and effectively enhanced the rubber compound (Chandrasekaran, 2007).
  • What are vulcanizing agents?
  • Vulcanizing agents can be classified roughly into sulfur and sulfur donor. The sulfur includes powdered sulfur, surface treated sulfur, precipitated sulfur, colloidal sulfur and insoluble sulfur. The sulfur donor includes dithiodimorpholine, alkylphenol disulfide, polysulfide and some accelerators.
  • What is insoluble sulphur used for?
  • Insoluble sulphur is mainly used as a vulcanising agent for rubber It allows for a more solid adhesion of the rubber, prevents the rubber from breaking apart and improves resistance to heat and tyre wear, and is therefore an essential raw material in tyre production.
  • Does sulfur affect vulcanization of rubber?
  • The efficient vulcanization process requires incorporation of a relatively high amount of sulfur. However, rubber compositions containing high sulfur amount may exhibit an undesirable sulfur migration effect from the bulk to their surface.
  • What happens during sulfur vulcanization?
  • During vulcanization, the rubber molecule becomes cross-linked and a three-dimensional network structure is formed. During vulcanization rubber loses its tackiness and it is more resistant to solvents, heats, light, etc. Fig. 1.20 shows the schematic representation of sulfur vulcanization. Figure 1.20.
  • How vulcanise rubber compounds?
  • Many systems have been developed to vulcanise rubber compounds, among which sulphur and peroxide curing systems remain the most desirable. The application of sulphur systems leads to the forming of sulphidic cross-links between elastomer chains, while carbon–carbon bonds are formed in peroxidecuring.