Insoluble Sulfur is a homopolymer of sulphur, also known as polymerised sulphur (IS), non-toxic flammable yellow powder, is a highly polymerised isoform of ordinary sulphur and polymer modified varieties, insoluble in carbon disulphide and rubber. Insoluble sulphur IS60 and IS90 on the market refer to the products containing 60% and 90% of insoluble sulphur. Insoluble sulfur (hd7720) is a large number of sulfur atoms polymerisation of long-chain linear polymers, is an important rubber vulcanising crosslinking agent, divided into oil-filled and non-oil-filled type 2 categories. The oil-filled type is filled with a certain amount of petroleum-based special oil in insoluble sulphur, the amount of oil is generally 4% ~ 34%, different oils have different effects on the thermal stability of insoluble sulphur. About 99% of the insoluble sulphur used in rubber industry is oil-filled products.
Insoluble sulfur (cas 9035 99 8) in the production of rubber tyres can effectively prevent the rubber spray frost, improve the tyre's heat resistance, wear resistance, reduce scorching, prolong the rubber storage time, so it is an important raw material essential to the production of tyres. Especially in the production of automobile all-wire radial tyres, insoluble sulfur is the best rubber vulcanising agent and accelerator, can make the rubber products and semi-finished products on the surface of the frost, accelerate the speed of vulcanisation, reduce the amount of sulphur and ensure uniform vulcanisation, so that the radial, steel wire and rubber adhesion is more solid, saving adhesive paste and gasoline, there is no alternative product. At present, insoluble sulphur in the foreign tyre industry has accounted for 40% of the total amount of sulphur, and is still increasing.
Insoluble sulfur (9035 99 8) can also be used in cables, rubber rollers, oil seals, hoses, rubber materials, can prevent early vulcanisation, so that the rubber to maintain a good viscosity. At the same time also used in light-coloured rubber products, special rubber products and family rubber products, latex products, etc., so that the rubber has a good self-adhesive, can effectively improve the adhesive strength of multi-layer rubber products and product quality, with ordinary sulfur incomparable advantages. In addition, insoluble sulphur can be widely used in dyestuff, textile, pesticide, metallurgy, environmental protection and other fields. Rubber products such as belts, inner tubes, insulating rubber parts, various automobile rubber parts, etc.