Stearic Acid: 1860
CAS No.: 57-11-4
Stearic acid is the most commonly used general-purpose activator in rubber processing. It is characterized by low cost and high compatibility. Unlike specialized activators, it has multiple functions including activation, lubrication, and plasticization, with excellent cost-effectiveness. It is made from natural oils through hydrogenation, fractionation, and refinement, and comes in white or slightly yellow waxy particles. It has no obvious odor and is soluble in hot ethanol and vegetable oil, but insoluble in water. It has excellent compatibility with various rubbers, vulcanizing agents, and accelerators, and is widely used in the processing of various rubber products such as tires, rubber hoses, and seals.
Product Index: Appearance: Massive, Flake, Powder or Granular; Iodine Value ≤8.0gI; 2/100g;
Acid Value:192~218 mg KOH/g;
Saponification Value:193~220 mg KOH/g;
Colour ≤400Hazen;
Titre ≥50°C;
Moisture ≤0.6%;
Inorganic acid≤0.001%
Specification
| Appearance | Massive, Flake, Powder or Granular |
| Iodine Value | ≤8.0gI; 2/100g; |
| Acid Value | 192~218 mg KOH/g; |
| Saponification Value | 193~220 mg KOH/g; |
| Colour | ≤400Hazen; |
| Titre | ≥50°C; |
| Moisture | ≤0.6%; |
| Inorganic acid | ≤0.001% |
Product advantages
The core advantage is the integration of multiple functions. It can not only activate the vulcanizing agent and accelerator, accelerate the vulcanization process, reduce the vulcanization temperature, and improve the vulcanization efficiency, but also play a lubricating role, improve the processing fluidity of the rubber compound, avoid roller and mold sticking; it has extremely strong compatibility, is compatible with all rubber formulations, does not require process adjustment, is easy to operate; it is cost-effective, with a cost-performance ratio far exceeding that of dedicated activators, suitable for batch-scale production; it can also slightly enhance the gloss of rubber products, reduce surface defects of the products, and at the same time enhance the demolding performance of rubber and metal molds.
Application
Stearic acid 1860 can be used as a vulcanization activator, softener, dispersant, etc. in the rubber industry.
Packaging
25kgs/bag
Validity
12 months
FAQ
Q: What is the main role of stearic acid in rubber?
A: The core function is to activate the vulcanization system, accelerate the vulcanization process, and also have lubricating and demolding effects, improving the processability.
Q: What is the conventional addition amount?
A: Generally, add 1-3 parts. Adjust according to the type of rubber and the vulcanization formula, without excessive addition.
Q: What should be noted when storing and using?
A: Store in a sealed container in a cool and dry place, away from high temperatures, to avoid melting and caking; preheat during mixing to make the dispersion faster.
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