Research on cenosphere surface chemical plating Ni–P and microwave infrared compatible performance

AbstractIn this paper, the fly ash cenosphere was coated evenly on the surface with Ni–P alloy in chemical plating method. The coated cenosphere was used for coating as filler, and its heat insulation performance and absorbing performance was tested. The results show that the cenosphere chemical nickel plating material complex dielectric constant is bigger than complex permittivity in both real part and imaginary part. The imaginary part of complex permeability is close to zero, which means it belongs to the electromagnetic loss type materials. e″ appeared the maximum 20·3 when the frequency is 4 GHz. We tested the cenosphere heat insulation coating with self-made heat insulation device. The temperature difference between back coating at balance point and the blank sample reached 10°C, indicating obvious heat insulation effect.