Polyurethane foam wedge-shaped absorbing material is a special type of material that uses polyurethane foam as the base, and through the design of wedge-shaped structure and the compounding of functional absorbing agents, it achieves efficient absorption of electromagnetic waves.
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The polyurethane foam wedge-shaped absorbing material is similar to the polyurethane foam cone-shaped absorbing material of the same height. It exhibits excellent performance within the frequency range of 30 MHz to 110 GHz. It is mainly applied in large compression field anechoic chambers and cone-shaped anechoic chambers. Its main function is to reduce the backward scattering caused by the sharp cone, thereby achieving a high static zone static degree.
Properties and parameters of polyurethane foam wedge-shaped absorbing material
Physical properties
● Shape: wedge-shaped, blue (optional)
● Soft and flexible
● Long-term use without drooping, the absorption wave performance remains unchanged for 10 years.
Flame retardant property
● The oxygen index is greater than 29%, which falls under the B2 non-flammable grade.
● Meets the requirements of GB/T2406-2009 and complies with the standards of GB/T8624-2012
● Working temperature: -50℃ to 90℃; Short-term temperature: -100℃ to 120℃
● Relative humidity: 55% + 15%
Absorptive performance
● The ratio of material thickness to wavelength (d/) affects the reflectivity; the greater the thickness, the lower the reflectivity.
Environmental protection performance
● The materials used meet environmental protection requirements, being non-toxic, odorless and non-volatile.
● Generally, it can be adhered to the shielding body using an environmentally friendly adhesive.
● The material can be installed using Velcro fasteners at an altitude of 500 meters or by using hook-and-loop fasteners for hanging.
| Model | Base size (mm×mm) | Number of unit sharp prisms (pieces) | Unit size H×L×h (mm×mmxmm) | Standard weight (kg/m²) | Package box size H×L×h (mm×mmxmm) | Number of packages (pieces) |
| ZKPUR-200W | 610*610 | 6 | 200*100*50 | 8 | 1280*650*650 | 12 |
| ZKPUR-300W | 610*610 | 6 | 300*100*60 | 10 | 1280*650*650 | 8 |
| ZKPUR-500W | 610*610 | 3 | 495*200*65 | 16 | 1280*650*650 | 4 |
| ZKPUR-700W | 610*610 | 2 | 700*200*130 | 20 | 1280*650*650 | 4 |
Parameters of vertical reflection characteristics of polyurethane foam wedge-shaped absorbing material
| Model | Reflection loss at vertical incidence (-dB) | Power capacity kW/m2 | ||||||
| 0.5(Ghz) | 1(Ghz) | 3(Ghz) | 6(Ghz) | 10(Ghz) | 18(Ghz) | 40(Ghz) | ||
| ZKPUR-200W | 25 | 32 | 35 | 42 | 48 | 50 | 1.5 | |
| ZKPUR-300W | 30 | 38 | 45 | 48 | 50 | 50 | 1.5 | |
| ZKPUR-500W | 20 | 35 | 43 | 50 | 50 | 50 | 50 | 1.5 |
| ZKPUR-700W | 25 | 40 | 50 | 50 | 50 | 50 | 50 | 1.5 |
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