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制备了纳米炭球、炭/铁磁体和炭基/铁磁体的红外烟幕材料,采用傅里叶变换红外光谱仪的KBr压片法测试了其在波长2.5～25μm区间的红外透过率,根据朗伯-比尔定律计算了质量消光系数。结果表明:与传统的乙炔黑等炭质红外衰减材料相比,纳米炭球的红外消光性能优异,在2.5～11.95μm波段的质量消光系数均大于0.3 m2/g。在2.5～14μm波段,炭/镍铁氧体/镍铁合金的最大质量消光系数最大,炭/钴铁磁体次之;炭/镍铁氧体/镍铁合金在8～14μm的远红外波段最大消光系数达到1.10 m2/g,远远超过了活性炭的0.31 m2/g和炭球的0.52 m2/g。炭/钴铁磁体在2.5～14μm波段的最大消光系数达到1.27 m2/g,平均消光系数达到0.9 m2/g。炭基/锌铁磁体在2.5～7.5μm波段的质量消光系数全部超过0.6 m2/g,最大消光系数达到0.9 m2/g。
The infrared smoke screen material of carbon nanosphere, carbon / ferromagnetic and carbon-based / ferromagnetic was prepared. The infrared transmittance of the infrared smoke screen in the range of 2.5 ~ 25μm was measured by KBr tablet method of Fourier transform infrared spectroscopy. The Bir-Beer rule calculates the mass extinction coefficient. The results show that compared with the traditional carbonaceous infrared attenuating materials such as acetylene black, the carbon nanosphere has excellent infrared extinction performance, and the mass extinction coefficients in the range of 2.5 ~ 11.95μm are both greater than 0.3 m2 / g. The maximum mass extinction coefficient of carbon / nickel ferrite / nickel-iron alloy is the largest in the range of 2.5-14μm, followed by carbon / cobalt ferrite; the maximum extinction coefficient of the carbon / nickel ferrite / nickel-iron alloy in the far infrared range of 8-14μm Reaching 1.10 m2 / g, far exceeding the 0.31 m2 / g of activated carbon and 0.52 m2 / g of carbon spheres. The maximum extinction coefficient of carbon / cobalt ferrite in the wavelength range of 2.5 ~ 14μm reached 1.27 m2 / g and the average extinction coefficient reached 0.9 m2 / g. The mass extinction coefficients of carbon-based / zinc-iron magnets in the wavelength range of 2.5-7.5μm all exceeded 0.6 m2 / g and the maximum extinction coefficient reached 0.9 m2 / g.