Non-Contact Corona Poling Service for Thin Films (±20 kV)
Technical Specifications & Test Capabilities
| Parameter / Metric | Specification Range & Accuracy | Operational Notes |
|---|---|---|
| Corona Voltage Range | DC 0 to 10 kV / 20 kV / -20 kV (Positive / Negative) | Single-needle or multi-needle needle-mesh array |
| Temperature Range | Room Temperature to 180°C | Uniform heated sample ground stage |
| Grid Stabilization | Bias-controlled grid mesh for uniform surface potential | Eliminates localized pinhole breakdown |
| Target Substrates | PVDF, P(VDF-TrFE), cellular polypropylene, electrets, powders | Specimen dimensions up to A5 (20 × 20 cm) |
Specimen Geometry & Preparation Guide
| Material Form | Recommended Dimensions | Dimensional Limits | Electrode & Poling Notes |
|---|---|---|---|
| Thin Film Coupons | Diameter ≤ 45 mm, single-sided bottom electrode | Thickness 5–200 µm | Top surface remains bare for charge deposition |
| Large-Area Polymer Sheets | A5 size or 20 × 20 cm | Single-sided metallized bottom | Uniform area poling |
| Electret & Piezoelectric Powders | ≤ 2 g batch | Deposited/fixed onto conductive metallic plate | Allows high-field dipole alignment without pelletizing |
Testing Function
Conventional contact poling of thin polymer films or porous cellular membranes frequently suffers from pinhole dielectric breakdown caused by microscopic defects. Corona poling employs sharp needle-tip gas ionization and grid control to deposit charged ions gently onto the exposed dielectric surface, generating an immense electric field that aligns dipoles without destructive electrical punch-through.
Testing Conditions
Primary Instruments: SPD Corona Poling System, FCP Film Corona Polarizer
Standard Turnaround: Within 5 working days
Key Standards: IEEE 176 / ASTM Standards on Corona Charging and Electret Stability
Sample Requirements
Please review the detailed specimen dimensions, electrode requirements, and poling conditions in the table above. Custom dimensions and special sample geometry can be accommodated upon technical consultation.
Testing Standards
- IEEE 176 / ASTM Standards on Corona Charging and Electret Stability
Test Results
Clients receive comprehensive test reports with raw exported ASCII/txt data files, high-resolution curve plots (temperature spectra, impedance plots, or hysteresis loops), and experimental condition parameters stamped by our CMA accredited testing center.
Turnkey Equipment for Your Own Laboratory
Prefer in-house characterization? Every test in our laboratory is performed using MatMeas turnkey instruments. Verify measurement quality with sample testing before capital procurement.
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