安徽征越新材料科技有限公司
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Introduction
Marine engineering, ceramic manufacturing and fine chemical sectors are constantly seeking reliable inorganic functional materials with stable chemical properties. Cuprous oxide (Cu₂O), a characteristic reddish powder, stands out thanks to its unique biological inhibition effect and high-temperature tinting performance. It is most widely recognized as a core ingredient for ship bottom antifouling coatings. Beyond marine applications, it serves as a coloring agent for ceramics, enamel and red glass, and can also be deployed in fungicide formulations and chemical reagent production. This article explores its inherent properties, key technical indicators and practical application value for formulators and manufacturers.
Basic Properties & Quality Standard of Cuprous Oxide
Cuprous oxide has a specific gravity of 6.00, melting point at 1235°C and boiling point at 1800°C. It dissolves in hydrochloric acid, ammonium chloride and ammonia solution, yet is insoluble in water and alcohol. The material maintains stability under dry air, but will slowly oxidize into copper oxide when exposed to humid environments.
Qualified cuprous oxide should comply with HG/T2961-2010 superior grade specifications. Key indicators include cuprous oxide content ≥97.0%, total copper ≥87.0%, metallic copper impurity ≤1.0%. Impurities such as chloride and sulfate are limited to ≤0.1%, moisture below 0.5%. The 45μm sieve residue is controlled within 0.3%. Manufacturers can also select 500-mesh ultra-fine specifications according to formulation demands. Tightly controlled impurity levels help avoid unexpected side effects in end products.
1. Raw Material for Ship Bottom Antifouling Coatings
Marine organisms such as barnacles and algae easily attach to hull surfaces, increasing navigation resistance and fuel consumption. Cuprous oxide is the classic biocide for antifouling paint. Slowly released copper ions restrain the survival and adhesion of low-grade marine organisms, realizing long-term antifouling protection. Consistent purity ensures stable ion release speed and prolongs the service cycle of coatings.
2. Colorant for Ceramics, Enamel and Red Glass
Benefiting from its distinctive reddish tone, cuprous oxide is widely used as an inorganic colorant in ceramic glaze, enamel and red glass production. It presents uniform and bright color after high-temperature firing. Stable particle size distribution helps manufacturers achieve consistent color rendering between different batches of finished products.
3. Fungicide & Fine Chemical Raw Material
With biological inhibition capability, cuprous oxide can be processed into fungicides for multiple scenarios. It also works as raw material to synthesize various copper salts, analytical reagents, and supporting materials for rectification electroplating in the electrical industry.
Q1: What influence will excess metallic copper impurities bring to antifouling coatings?
A: Excessive metallic copper may accelerate oxidation inside the coating system, affect the storage stability and shorten the effective antifouling duration. Therefore, superior grade raw material is recommended for long-effect antifouling formulations.
Q2: When is ultra-fine 500-mesh cuprous oxide preferred?
A: Ultra-fine powder delivers better dispersion in paint and glaze systems, suitable for formulas requiring finer texture and uniform color.
As a multi-functional inorganic powder, cuprous oxide still holds irreplaceable status in marine antifouling coatings, ceramic coloring and fine chemical industries. Strict indicator control is the foundation to guarantee stable performance in different formulations.
Reliable suppliers can provide cuprous oxide meeting HG/T2961-2010 superior grade standards, with sealed composite paper packaging (25kg or 500kg) to prevent moisture-induced oxidation. Custom particle sizes are available to match different production formulas.
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