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陈珂等:低发射率SiO2/A山,O,纳米复合粉体的制备和红外隐身性能 ·1299· 增加总体呈下降趋势,在3.51μm处存在最大值 值41.04%,远红外发射率的平均值为46.19%.结 76.91%,在4.90um处存在最小值36.74%,中红外 晶态Si02/Al203纳米复合粉体在2.5~25um波长 发射率的平均值为45.65%:在远红外波段范围内, 范围内的红外发射率均低于非晶态Si02/A山,0,纳米 远红外发射率随波长的增加先增大后减小,在12.14 复合粉体,是一种低发射率的红外隐身复合纳米 μm处存在最大值52.77%,在8.06μm处存在最小 材料 表3Si02/A山203纳米复合粉体在全波段、中红外波段和远红外波段的范围内发射率值 Table 3 Emissivity of Si0,/Al,O nanocomposite powders in full,intermediate and far infrared band % Si02/Al203 2.5-25m 3~5m 8~14μm 纳米复合粉体 最大值 最小值 平均值 最大值 最小值 平均值 最大值 最小值 平均值 非品态 88.14 34.97 59.18 86.46 66.83 75.13 80.83 37.74 61.67 结品态 79.43 36.74 47.67 76.91 36.74 45.65 52.77 41.04 46.19 90 photonic crystal.Opt Mater,2014,37:343 4]Yuan L.Weng X L,Du W F,et al.Optical and magnetic proper- 非晶态 ties of Al/Fe core shell low infrared emissivity pigments. Alloys Compd,2014,583:492 [5]Zheng G C,Chen Y L,Xu L H,et al.High reflectivity broad- band infrared mirrors with all dielectric subwavelength gratings. 0 pt Commun,2014,318(5):57 6]Bu X H,Zhou Y M,He M,et al.Fabrication and characteriza- tion of optically active polyacetylene@WO,nanorodhybrids with 4 low infrared emissivity.Mater Lett,2014,120:239 结晶态 30 7]Yang Y,Zhou Y M,Wang T H.Preparation of optically active 4 681012141618202224 波长am polyurethane/TiO2/Mn02 multilayered nanorods for low infrared emissivity.Mater Lett,2014,133(10):269 图5Si02/Al203纳米复合粉体在2.5~25μm波长范围内的发 8]Fang S J.Wang W,Yu X L,et al.Preparation of ZnO:(Al, 射率曲线 La)/polyacrylonitrile (PAN)nonwovens with low infrared emis- Fig.5 Emissivity curves of the Si0,/Al2O3 nanocomposite powders sivity via eleetrospinning.Mater Let,2015.143:120 in2.5-25μm ] Tan W M,Wang LF,Yu F,et al.Preparation and characteriza- tion of a greenish yellow lackluster coating with low infrared emis- 3结论 sivity based on Prussian blue modified aluminum.Prog Org Coat, 2014,77(7):1163 (1)采用溶胶-凝胶法制备的两种相结构Si02/ [10]Zhang W G,Xu G Y,Shi X,et al.Ultra-ow infrared emissivity A山,0,纳米复合粉体均呈不规则颗粒状,其中结晶态 at the wavelength of 3-5 um from Ge/ZnS one-dimensional pho- Si0,/AL,0,纳米复合粉体的平均晶粒尺寸约为18nm. tonic crystal.Photonics Nanostruct Fundam Appl,2015,14:46 (2)结晶态Si02/A山,0,纳米复合粉体在2.5~25 [11]Bu X H.Zhou Y M.He M,et al.Optically active SiO,/TiO,/ m波长范围内的红外发射率均低于非晶态复合粉 polyacetylene multilayered nanospheres:preparation,character- 体,其3~5μm内发射率平均值为45.65%,8~14um ization,and application for low infrared emissivity.Appl Surf Si,2014,288(1):444 内发射率平均值为46.19%,是一种低发射率的红外 02] Mao Z P,Yu X L,Zhang L P,et al.Novel infrared stealth 隐身复合纳米材料. property of cotton fabrics coated with nano Zn:(Al,La)parti- des.Vacm,2014,104(2):111 参考文献 03] WangT,HeJP,Zhou JH,et al.Electromagnetic wave absorp- 1]Wang Y J,Zhou Y M,Zhang T,et al.Acetate-intercalated Ni-n tion and infrared camouflage of ordered mesoporous carbon-lumi- layered double hydroxides with low infrared emissivity:synthesis, na nanocomposites.Microporous Mesoporous Mater,2010,134 delamination and restacked to form the multilayer films.Appl Surf (1-3):58 Sci,2014,288(2):710 [14]Ye X Y,Cheng C,Xiao X Q,et al.Fabrication of silver shells 2]Zhang W G.Xu C Y,Ding R Y,et al.Microstructure,optimum onto silica sphere for infrared emissivity.Ade Mater Res,2012, pigment content and low infrared emissivity of polyurethane/Ag 479-481:479 composite coatings.Phys B,2013,422(4)36 05] Wang Y J,Zhou Y M,Zhang T,et al.Fabrication of core-shell B3]Zhang W G,Xu G Y,Zhang JC,et al.Infrared spectrally selec- structural SiODNA-LDH nanocomposite with low infrared tive low emissivity from Ge/ZnS one-dimensional heterostructure emissivity.Chem Eng J,2015,266:199陈 珂等: 低发射率 SiO2 /Al2O3 纳米复合粉体的制备和红外隐身性能 增加 总 体 呈 下 降 趋 势,在 3. 51 μm 处 存 在 最 大 值 76. 91% ,在 4. 90 μm 处存在最小值 36. 74% ,中红外 发射率的平均值为 45. 65% ; 在远红外波段范围内, 远红外发射率随波长的增加先增大后减小,在 12. 14 μm 处存在最大值 52. 77% ,在 8. 06 μm 处存在最小 值 41. 04% ,远红外发射率的平均值为 46. 19% . 结 晶态 SiO2 /Al2O3 纳米复合粉 体 在 2. 5 ~ 25 μm 波 长 范围内的红外发射率均低于非晶态 SiO2 /Al2O3 纳米 复合粉 体,是一种低发射率的红外 隐身复合纳米 材料. 表 3 SiO2 /Al2O3 纳米复合粉体在全波段、中红外波段和远红外波段的范围内发射率值 Table 3 Emissivity of SiO2 /Al2O3 nanocomposite powders in full,intermediate and far infrared band % SiO2 /Al2O3 纳米复合粉体 2. 5 ~ 25 μm 3 ~ 5 μm 8 ~ 14 μm 最大值 最小值 平均值 最大值 最小值 平均值 最大值 最小值 平均值 非晶态 88. 14 34. 97 59. 18 86. 46 66. 83 75. 13 80. 83 37. 74 61. 67 结晶态 79. 43 36. 74 47. 67 76. 91 36. 74 45. 65 52. 77 41. 04 46. 19 图 5 SiO2 /Al2O3 纳米复合粉体在 2. 5 ~ 25 μm 波长范围内的发 射率曲线 Fig. 5 Emissivity curves of the SiO2 /Al2O3 nanocomposite powders in 2. 5--25 μm 3 结论 ( 1) 采用溶胶--凝胶法制备的两种相结构 SiO2 / Al2O3 纳米复合粉体均呈不规则颗粒状,其中结晶态 SiO2 /Al2O3 纳米复合粉体的平均晶粒尺寸约为 18 nm. ( 2) 结晶态 SiO2 /Al2O3 纳米复合粉体在 2. 5 ~ 25 μm 波长范围内的红外发射率均低于非晶态复合粉 体,其 3 ~ 5 μm 内发射率平均值为 45. 65% ,8 ~ 14 μm 内发射率平均值为 46. 19% ,是一种低发射率的红外 隐身复合纳米材料. 参 考 文 献 [1] Wang Y J,Zhou Y M,Zhang T,et al. Acetate-intercalated Ni--In layered double hydroxides with low infrared emissivity: synthesis, delamination and restacked to form the multilayer films. Appl Surf Sci,2014,288( 2) : 710 [2] Zhang W G,Xu G Y,Ding R Y,et al. Microstructure,optimum pigment content and low infrared emissivity of polyurethane /Ag composite coatings. Phys B,2013,422( 4) : 36 [3] Zhang W G,Xu G Y,Zhang J C,et al. Infrared spectrally selec￾tive low emissivity from Ge /ZnS one-dimensional heterostructure photonic crystal. Opt Mater,2014,37: 343 [4] Yuan L,Weng X L,Du W F,et al. Optical and magnetic proper￾ties of Al /Fe3O4 core shell low infrared emissivity pigments. J Alloys Compd,2014,583: 492 [5] Zheng G G,Chen Y L,Xu L H,et al. High reflectivity broad￾band infrared mirrors with all dielectric subwavelength gratings. Opt Commun,2014,318( 5) : 57 [6] Bu X H,Zhou Y M,He M,et al. Fabrication and characteriza￾tion of optically active polyacetylene@ WO3 nanorodhybrids with low infrared emissivity. Mater Lett,2014,120: 239 [7] Yang Y,Zhou Y M,Wang T H. Preparation of optically active polyurethane /TiO2 /MnO2 multilayered nanorods for low infrared emissivity. Mater Lett,2014,133( 10) : 269 [8] Fang S J,Wang W,Yu X L,et al. Preparation of ZnO: ( Al, La) /polyacrylonitrile ( PAN) nonwovens with low infrared emis￾sivity via electrospinning. Mater Lett,2015,143: 120 [9] Tan W M,Wang L F,Yu F,et al. Preparation and characteriza￾tion of a greenish yellow lackluster coating with low infrared emis￾sivity based on Prussian blue modified aluminum. Prog Org Coat, 2014,77( 7) : 1163 [10] Zhang W G,Xu G Y,Shi X,et al. Ultra-low infrared emissivity at the wavelength of 3--5 μm from Ge /ZnS one-dimensional pho￾tonic crystal. Photonics Nanostruct Fundam Appl,2015,14: 46 [11] Bu X H,Zhou Y M,He M,et al. Optically active SiO2 /TiO2 / polyacetylene multilayered nanospheres: preparation,character￾ization,and application for low infrared emissivity. Appl Surf Sci,2014,288( 1) : 444 [12] Mao Z P,Yu X L,Zhang L P,et al. Novel infrared stealth property of cotton fabrics coated with nano ZnO: ( Al,La) parti￾cles. Vacuum,2014,104( 2) : 111 [13] Wang T,He J P,Zhou J H,et al. Electromagnetic wave absorp￾tion and infrared camouflage of ordered mesoporous carbon-alumi￾na nanocomposites. Microporous Mesoporous Mater,2010,134 ( 1--3) : 58 [14] Ye X Y,Cheng C,Xiao X Q,et al. Fabrication of silver shells onto silica sphere for infrared emissivity. Adv Mater Res,2012, 479--481: 479 [15] Wang Y J,Zhou Y M,Zhang T,et al. Fabrication of core-shell structural SiO2 @ DNA--LDH nanocomposite with low infrared emissivity. Chem Eng J,2015,266: 199 ·1299·
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