Overview
Shell powder water-based coating is a sustainable alternative to conventional paints, utilizing calcium carbonate-rich crushed seashells as its primary filler. Developed in response to demand for green building materials, it combines traditional lime paint principles with modern emulsion technology. Unlike synthetic coatings, its natural composition eliminates harmful emissions while providing unique benefits like humidity regulation and air purification. The product aligns with global trends toward circular economy solutions by repurposing shellfish industry waste.
Physical and Chemical Properties
The coating exhibits alkaline properties (pH 9-11) due to calcium carbonate content, creating an inhospitable environment for mold and bacteria. Its porous microstructure enables moisture absorption up to 70g/m² per hour, outperforming standard latex paints by 30%. Key technical parameters include adhesion strength (≥1.0MPa), scrub resistance (>5,000 cycles), and 85%+ light reflectance. The water-based formula achieves rapid drying (2-4 hours recoat time) with near-zero flammable risk (flash point >100°C).
Main Applications
Widely adopted in healthcare and education sectors, the coating's antimicrobial properties meet China's GB/T 21866-2008 standard for antibacterial paints. Hospitals utilize it in operating rooms and ICUs where sterility is critical. In residential construction, developers value its formaldehyde-absorbing capability (85%+ removal rate per JG/T 1074-2019). Specialty applications include heritage restoration due to material compatibility with traditional lime plaster substrates.
Safety and Storage
Classified as non-hazardous per GHS standards, the coating requires no special PPE beyond basic ventilation during application. Shelf life extends 12-18 months in original sealed containers at room temperature. Storage precautions include preventing temperature extremes (<0°C or >40°C) that may cause emulsion breakdown. Bulk shipments should avoid prolonged transit in subzero conditions to prevent irreversible viscosity changes.
B2B Procurement Guide
Professional buyers should prioritize suppliers with complete third-party certifications including China Environmental Labeling (Type I) and France A+ emissions standards. Technical specifications should confirm shell powder content (30-60% by weight) and absence of synthetic preservatives. For large projects, request factory production records verifying batch consistency. Sample testing should evaluate practical performance under project-specific conditions (humidity, substrate type). MOQs typically start at 1 metric ton for custom formulations.
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