Appearance: White waxy flakes/particles (bead shaped), with a slight oily odor, insoluble in water; Melting point 54-58 ℃ 
Packaging: 25kg woven bag lined with PE bag 
Classic combination of tire formula: Zinc oxide+stearic acid (vulcanization activation system), combined with aromatic oil and 6PPD anti-aging agent. 
Core Advantages (Key Rubber Formula) 
1. Sulfurization activator (core function) 
Reacting with zinc oxide to produce zinc stearate (zinc soap), which is soluble in rubber, activates vulcanization accelerators, accelerates sulfur cross-linking, increases cross-linking density, enhances the tensile strength, tear strength, and wear resistance of vulcanized rubber, shortens vulcanization time, and stabilizes the vulcanization curve. 
2. Internal and external lubrication to improve processing performance 
Internal lubrication: reduces friction between rubber molecules, lowers Mooney viscosity, makes mixing easier, and reduces energy consumption; 
External lubrication: prevents the adhesive from sticking to the rollers and molds, making extrusion and rolling smoother, and ensuring a smooth surface of the product. 
3. Filler dispersant 
Improve the wettability of powder fillers such as carbon black, white carbon black, zinc oxide, etc., prevent filler agglomeration, evenly disperse reinforcing fillers in the rubber material, stabilize batch performance, and avoid local stress defects. 
4. Assist in softening and plasticizing 
A small amount of softened rubber material to enhance its plasticity; At the same time, it can assist in improving the dispersion of anti-aging agents (6PPD, etc.) in the rubber compound, better exerting the anti-aging effect. 
5. Good stability and high cost-effectiveness 
Saturated fatty acids, no double bonds, not easily oxidized or deteriorated; Low dosage (conventional formula 0.5-3 parts), low cost, almost all rubber formulas come standard with small ingredients. 
Main applications 
-Tire industry: tread, sidewall, inner tube (NR/SBR/BR/IR universal) 
-Rubber products: conveyor belts, rubber hoses, shock absorbers, seals, rubber shoe soles, recycled rubber 
-Other: plastic lubricants, PVC heat stabilizers, coatings, daily chemical products, candles