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ZnO-A50 is a high‑purity, Grade A indirect zinc oxide powder. It serves as a multifunctional additive in rubber compounds, providing vulcanization activation, reinforcement, and heat conduction. Suitable for both sulfur curing and metal oxide curing systems, it is a reliable choice for general rubber goods, tires, shoe soles, and EVA foams.
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Surfactant Series
Grade A Zinc Oxide (Indirectly Processed Zinc Oxide) Type
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- Chemical composition: Grade A Zinc Oxide Coating
- Complex carrier: /
- Characteristics: Inorganic activators, reinforcing agents, heat-conducting agents, and colorants for both natural and synthetic rubbers—also suitable as vulcanizing agents for chloroprene rubber when used in conjunction with magnesium oxide to enhance scorch resistance. Additionally, they exhibit activating effects on accelerators such as thiazoles, sulfonamides, guanidines, and thiurams. Commonly employed as activators in insulating rubber hoses and EVA products.
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When it comes to choosing a zinc oxide for general rubber goods, most manufacturers care about two things: stability and value. You don't always need nano‑grade activity, but you do need consistent batch‑to‑batch quality and a competitive price. ZnO-A50 is designed exactly for that. It is a standard‑grade indirect‑process zinc oxide with a content of 99.5% or higher. Nothing fancy — just high purity, low impurities, and solid cost‑performance. Yes, the powder form creates dust. But the real advantage is its wide compatibility. Whether you use sulfur curing or metal oxide curing, whether you work with thiazoles, sulfenamides, or guanidines, ZnO-A50 works reliably. For high‑volume general products like tyres, hoses, shoe soles, and EVA foams, it serves as a dependable workhorse. In CR (chloroprene rubber) compounds, ZnO-A50 can be used together with magnesium oxide to improve scorch safety and heat resistance. That is one reason why this basic grade remains a long‑term choice for many rubber factories. Typical reference data: - Zinc oxide content: ≥ 99.5% - Production method: Indirect (French) process - Appearance: White fine powder - Recommended dosage: Typically 3–5 phr (please test for your specific formulation) - Packaging: 25 kg paper bag with inner PE liner - Storage stability: 12 months in unopened packaging under cool, dry conditions Nothing fancy — just reliable. If you would like a sample, just let us know.
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