Overview
Electronic ceramic dispersion is a colloidal suspension of fine ceramic particles (e.g., barium titanate, alumina) in a liquid medium. It serves as a precursor for manufacturing high-performance electronic components through processes like tape casting or screen printing. This material is critical in industries requiring miniaturization and reliability, such as consumer electronics and automotive systems. Its formulation ensures homogeneity and optimal rheology for precise deposition.
Physical and Chemical Properties
The dispersion exhibits pseudoplastic flow behavior, enabling smooth application during fabrication. Particle sizes typically range from 0.1 to 1.0 µm to ensure dense packing after sintering. Key chemical attributes include pH stability (often 8–10) and low ionic contamination to prevent device failure. Additives like dispersants and binders are tailored to prevent agglomeration and improve green strength.
Main Applications
Primarily used in multilayer ceramic capacitors (MLCCs), which account for ~70% of global demand. The dispersion enables ultra-thin dielectric layers (<1 µm) for high-capacitance designs. Other uses include piezoelectric actuators, LTCC (low-temperature co-fired ceramic) substrates, and thermal management coatings. Emerging applications span 5G antennas and energy storage systems.
Safety and Storage
While generally low-risk, prolonged skin contact may cause dryness due to solvent content. Use nitrile gloves and ventilated workspaces. Storage requires regular agitation to prevent settling. Shelf life is typically 6–12 months; monitor for viscosity changes or phase separation. Dispose per local regulations for solvent-bearing wastes.
B2B Procurement Guide
Specify particle size distribution (D50/D90), solid loading (usually 40–60 wt%), and organic content. Request certified test data for dielectric loss (<0.5%) and sintering shrinkage rates. Audit suppliers for batch consistency and contamination control. Bulk orders (100+ kg) often qualify for 10–15% discounts. Consider regional logistics due to flammability classifications.
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