Study on Thermal Insulation Properties of Nano-VO2 Modified Plexi Glass
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摘要: 通过将纳米二氧化钒粉体制备成纳米二氧化钒浆料添加到甲基丙烯酸甲酯的预聚体中，在低温和高温聚合的条件下得到具有红外智能隔热的有机玻璃。通过扫描电镜、光学性能以及隔热性能的测试对智能隔热有机玻璃进行表征，研究了纳米二氧化钒粉体形貌及纳米二氧化钒浆料的不同添加量对聚甲基丙烯酸甲酯的光学性能和红外隔热性能的影响。结果表明：用形貌为球形、粒径为50 nm的二氧化钒粉体制备得到的纳米二氧化钒浆料，且纳米二氧化钒浆料添加量为10%时，获得的纳米二氧化钒智能隔热有机玻璃性能相对最好，其可见光透过率为40%，红外阻隔率为85%，紫外阻隔率为99%。Abstract: In this paper,the plexi glass with infrared intelligent heat insulation was prepared respectively at low and high temperature polymerization conditions,via adding nano-vanadium dioxide slurry obtained from nano-vanadium dioxide powder into the prepolymerof methyl methacrylate.The plexi glass with infrared intelligent heat insulation was characterized by scanning electron microscopy,optical and thermal insulation performances tests.The effects of morphology of nano-vanadium dioxide powder and addition amount of nano-vanadium dioxide slurry on the optical and infrared thermal insulation properties of the polymethyl methacrylate were investigated.The results show that with addition of 10% nano-vanadium dioxide slurry prepared from spherical nano-vanadium dioxide powder having a particle size of 50 nm,the obtained plexi glass has the best properties with a visible lighttransmittance of 40%,infrared and ultraviolet blocking rate of 85% and 99%,respectively.
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