Zinc Oxide for Rubber
KosNano provides high-activity zinc oxide for rubber, model KOSN-3001.
This zinc oxide powder is specifically used to improve the wear resistance, mechanical properties, and vulcanization efficiency of high-performance rubber products.
We use a special production process, providing high surface activity and good dispersibility.
It is suitable for rubber products with high requirements for wear resistance.
Basic Properties of Our Zinc Oxide Powder
Appearance
Light yellow fine powder
Chemical Composition
Mainly composed of zinc oxide and zinc spinel structure composites
Properties
High activity, enhanced wear resistance, excellent reinforcing performance, and good processing adaptability
Our Technical Advantages
1. Improved Wear Resistance
Through surface modification treatment, the bonding with rubber molecular chains is enhanced, improving the resistance of rubber products to abrasive cutting and fatigue wear under severe operating conditions.
According to laboratory testing, in a standard formulation, DIN abrasion loss can be reduced by up to 40%.
2. High Vulcanization Activity
It has a relatively high concentration of oxygen vacancies and density of active sites, which can effectively promote the crosslinking reaction in sulfur vulcanization systems.
It can improve vulcanization efficiency by approximately 10–15% and helps form a denser and more uniform crosslinked network structure.
3. Reinforcing Performance
The zinc spinel structure, together with the active sites of zinc oxide, can improve the tensile strength, tear resistance, and modulus at specified elongation of rubber compounds.
At the same time, it helps maintain resilience and reduce dynamic heat build-up.
4. Processing Performance
Surface modification treatment improves compatibility with commonly used rubbers such as Natural Rubber (NR), Styrene-Butadiene Rubber (SBR), Butadiene Rubber (BR), and Nitrile Butadiene Rubber (NBR).
It provides uniform dispersion during mixing, fast incorporation, and stable Mooney viscosity, which is beneficial for extrusion and calendering operations.
5. Recommended Addition Level
Due to its higher activity, under the condition of achieving equivalent performance, the recommended addition level can be approximately 10–15% lower than that of conventional zinc oxide.
This helps optimize formulation costs.
6. Multiple Rubber-Grade Zinc Oxide Options
In addition to KOSN-3001, KOSNANO can support different rubber-grade zinc oxide directions based on wear resistance, vulcanization activity, dispersion requirement, zinc content, and processing needs.
Available directions include high-activity zinc oxide for wear-resistant rubber, rubber-grade zinc oxide for vulcanization support, grinding-grade active zinc oxide, and lightweight active zinc oxide for applications requiring lower density and good dispersibility.
Physical and Chemical Specifications
Standard Parameters
| Test Item | Unit | Specification | Test Method |
|---|---|---|---|
| Zinc Oxide (ZnO) Content | % | 85 ± 3 | Enterprise Standard |
| Zinc Spinel Content | % | 12–18 | Enterprise Standard |
| Loss on Ignition (800°C, 2h) | % | ≤ 0.8 | GB/T 5211.3 |
| Moisture | % | ≤ 0.5 | GB/T 6284 |
| Sieve Residue (45 μm) | % | ≤ 0.5 | GB/T 5211.18 |
| Lead (Pb) | mg/kg | ≤ 50 | ICP-MS |
| Cadmium (Cd) | mg/kg | ≤ 5 | ICP-MS |
| Specific Surface Area | m²/g | 7–20 | BET Method |
| Apparent Density | g/cm³ | 1.2–1.5 | GB/T 5211.4 |
Zinc Oxide Uses in Rubber
Tires
Engineering radial tires, mining tires, truck and bus tire tread compounds, etc.
Industrial Belts
High-strength conveyor belts and elevator belts
Wear-Resistant Products
Track pads, liners, rubber components for sand pumps, and slurry pistons
Footwear
Safety shoe soles and sports shoe outsoles
Other
Rubber components requiring high wear resistance and high strength
Request KOSN-3001 Zinc Oxide Evaluation
Send your requirement and our team will reply as soon as possible.