聚合物交替多层聚碳酸酯/聚甲基丙烯酸甲酯近红外高反膜的设计
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摘要
提出了一种能够实现近红外区域(780～1100nm)高反射的聚合物交替多层聚碳酸酯(PC)/聚甲基丙烯酸甲酯(PMMA)周期性光学薄膜的设计方案,验证了利用微纳层叠共挤设备制备特殊多层光学膜结构的可行性。利用遗传算法搜索出4个周期的最优布拉格中心波长,得出了最优膜的总厚度。仿真了4个周期叠加多层膜的光谱特性,讨论了入射角及厚度误差对多层膜近红外区域总反射率的影响。研究结果表明,所提方案满足对太阳光的隔热及内部智能采光的需求。
A scheme for designing polycarbonate(PC)/polymethyl methacrylate(PMMA)polymer alternating multilayer optical films with high reflectivity in near-infrared region(780～1100 nm)is proposed.The feasibility for the fabrication of the special multilayer optical films by the micro-nano laminated co-extrusion device is demonstrated.The optimal four-periodic Bragg center wavelength is retrieved by the genetic algorithm,and the optimum film thickness is obtained.The spectral characteristics of four-periodic superimposed multilayer films are simulated and the effects of thickness error and incident angle on the total reflectivity of the multilayer film in the near-infrared region are discussed.The results show that the proposed scheme can meet the requirements of solar heat insulation and intelligent interior lighting.
A scheme for designing polycarbonate(PC)/polymethyl methacrylate(PMMA)polymer alternating multilayer optical films with high reflectivity in near-infrared region(780～1100 nm)is proposed.The feasibility for the fabrication of the special multilayer optical films by the micro-nano laminated co-extrusion device is demonstrated.The optimal four-periodic Bragg center wavelength is retrieved by the genetic algorithm,and the optimum film thickness is obtained.The spectral characteristics of four-periodic superimposed multilayer films are simulated and the effects of thickness error and incident angle on the total reflectivity of the multilayer film in the near-infrared region are discussed.The results show that the proposed scheme can meet the requirements of solar heat insulation and intelligent interior lighting.
引文
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[4]Liu J,Zhu J J,Zhu Y H.The new technology for building glass film[J].China Building Materials Science&Technology,2013,22(5):47-50.刘鲸,朱加尖,朱熠弘.建筑玻璃贴膜新技术[J].中国建材科技,2013,22(5):47-50.
[5]Xu Q Q,Wang S Y,Liu Z,et al.Discussion on energy saving ways and measures of power plant thermal system.[J].Technology Innovation and Application,2012(26):204.徐倩倩,王术园,刘鐘,等.关于电厂热力系统节能途径及措施探讨[J].科技创新与应用,2012(26):204.
[6]Li L,Zhang Y C,Jiao Z W,et al.Progress of the building energy-saving membrane preparation technology[J].Plastics,2018,47(3):118-121,125.李莉,张有忱,焦志伟,等.建筑节能膜制备技术进展[J].塑料,2018,47(3):118-121,125.
[7]Jonza J M,Ouderkirk A J,Stover C A,et al.Optical film:US5882774[P].1999-03-16[2018-07-29].
[8]Stover C A,Hebrink T J,Liu Y Q,et al.Method for making PEN/PMMA multilayer optical films:US0218707[P].2009-09-03[2018-07-30].
[9]Kim S C,Yoon J H,Lee H M.Comparative experimental study on heating and cooling energy performance of spectrally selective glazing[J].Solar Energy,2017,145:78-89.
[10]Yang R,Han A J,Ye M Q,et al.Synthesis,characterization and thermal performance of Fe/N codoped MgTiO3as a novel high near-infrared reflective pigment[J].Solar Energy Materials and Solar Cells,2017,160:307-318.
[11]Granqvist C G.Transparent conductors as solar energy materials:a panoramic review[J].Solar Energy Materials and Solar Cells,2007,91(17):1529-1598.
[12]Chen P Z,Yu L Y,Niu P J,et al.Investigation and preparation of highly reflective one dimensional photonic crystal based on silicon thin films[J].Chinese Journal of Luminescence,2017,38(10):1403-1408.陈培专,于莉媛,牛萍娟,等.高反射率硅基薄膜一维光子晶体的研究制备[J].发光学报,2017,38(10):1403-1408.
[13]Li K W,Li X C,Chen P A,et al.High reflector designed with one-dimensional photonic crystal in 3-5μm infrared region based on hetero-structure[J].Acta Optica Sinica,2018,38(9):0922001.李康文,李享成,陈平安,等.基于异质结构的一维光子晶体红外3~5μm高反射镜设计[J].光学学报,2018,38(9):0922001.
[14]Meng L J,Teixeira V,dos Santos M P.Effect of the deposition rate on ITO thin film properties prepared by ion beam assisted deposition(IBAD)technique[J].Physica Status Solidi(A),2010,207(7):1538-1542.