Insoluble sulfur is named after its insolubility in rubber and carbon disulfide, and its scientific name is polymeric sulfur, abbreviated as IS. Insoluble sulfur is produced by reacting high-purity sulfur or hydrogen sulfide with sulfur dioxide, and has the characteristic of being insoluble in rubber. It is used in rubber to exist in a dispersed state. Therefore, the rubber material does not spray frost and has good viscosity. At the same time, it has good dispersibility in production and can prevent the accumulation of sulfur, reducing the burning of the rubber material during storage. The insoluble sulfur powder oil filling type and the supplementary oil type, which are used for vulcanization of rubber products, belong to the former. Regarding their oil filling, the insoluble sulfur manufacturer will discuss them next.
Ordinary insoluble sulfur products are in powder form with a particle size of 150 μ Around m, it is easy to fly and inconvenient to transport. At the same time, it is not easy to evenly disperse in the rubber during use. The insoluble sulfur manufacturer pointed out that this does not conform to our original intention of using this type of vulcanizing agent, and it will also have a certain impact on the production environment. Therefore, oil filling measures can be taken for its powder to prevent dust formation, and it can also make the vulcanizing agent better dispersed in the rubber material, avoiding rubber product frost and burning of the rubber material.
Insoluble sulfur filling oil is generally made of aromatic oil and naphthenic oil obtained from petroleum refining, with a filling oil content of 10% to 34%. Refined aromatic oil and naphthenic oil have good dispersion function and solubility, but their processing and production costs are relatively high. Therefore, the price of oil filled insoluble sulfur used for radial tire sulfur is correspondingly high.