Thermoplastic resin composition for electromagnetic wave absorber, and molded article for electromagnetic wave absorber
The thermoplastic resin composition with controlled carbon black and filler ratios addresses anisotropy and moldability issues, providing effective electromagnetic wave absorption and rigidity for millimeter-wave radar systems.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- TOYO INK MFG CO LTD
- Filing Date
- 2025-12-19
- Publication Date
- 2026-06-25
AI Technical Summary
Conventional electromagnetic wave absorbers for millimeter-wave radar systems lack sufficient electromagnetic wave absorption properties, rigidity, and moldability, and exhibit anisotropy due to the orientation of carbon black and carbon nanotubes, leading to reduced detection accuracy and interference with signal transmission.
A thermoplastic resin composition comprising a thermoplastic resin, carbon black, and a filler with specific particle sizes and ratios, which suppresses anisotropy and maintains excellent electromagnetic wave absorption and rigidity, particularly in the 60 to 90 GHz frequency band.
The composition achieves low return loss and transmission loss, ensuring consistent electromagnetic wave absorption and rigidity, enhancing the performance of millimeter-wave radar systems by reducing anisotropy and maintaining moldability.
Smart Images
Figure JP2025044583_25062026_PF_FP_ABST