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Insoluble Sulfur (Oil-filled) CAS No.: 9035-99-8 |
Technical Data |
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Model |
IS7520 |
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Appearance |
Yellow oil-filled powder |
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Total content of sulfur (%) |
79.0-81.0 |
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Sulfur (In total S) Content Insoluble (%) |
≥94.0 |
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Oil content (%) |
19.0-21.0 |
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Heat Loss(80±2℃) (%) |
≤ 0.50 |
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Ash(600±25℃) (%) |
≤ 0.15 |
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Residue (150μm) (%) |
≤ 0.50 |
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Acidity(as H₂SO₄) (%) |
≤ 0.05 |
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Application:Vulcanizing agent for radial tires,OTR tires,conveyor belts,hoses,and seals.Ideal for high - temperature mixing and carbon black-filled compounds,preventing blooming and enhancing abrasion resistance/dynamic properties. Combined with accelerators(e.g.,TBBS,CBS),zinc oxide,and stearic acid to optimize curing profiles and crosslink density. Cable insulation,rubber rollers,shoe soles requiring high sulfur dispersion. Package: 25kgs/bag Validity: 12 months |
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Product advantages
The insoluble sulfur content is as high as over 75%, resulting in a faster vulcanization process and more thorough cross-linking, significantly enhancing the hardness and wear resistance of the rubber products. Its thermal stability is superior to that of conventional types. It does not decompose easily during high-temperature mixing, effectively reducing the risk of scorching. The oil-filled formula ensures excellent powder fluidity, preventing agglomeration during feeding, and is suitable for automated production lines. The impurity content is extremely low, with strong adhesion to steel wires and fibers, significantly improving the structural stability of rubber products, and suitable for high-end radial tires, precision seals, and other products.
FAQ
Q: What are the differences between IS7520 and IS7020?
A: The core difference is that IS7520 has a higher content of insoluble sulfur (≥75%), and it has better vulcanization efficiency and adhesion, making it suitable for higher standard production requirements.
Q: Which rubber products are applicable?
A: High-end radial tires, high-strength rubber tubes, precision seals, steel wire bonding rubber compounds, etc.
Q: What should be noted when using?
A: The mixing temperature should be controlled at 120-140℃. Avoid prolonged heating at high temperatures. Storage requires sealing against moisture and keeping away from heat sources.
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