六硼化镧与氧化石墨烯共混制备PVB透明隔热薄膜及其光学性能和热稳定性的研究  

Preparation of transparent LaB_6–GO/PVB heat insulation thin films and study on their optical properties and thermal stability

作　　者：汤洪波[1] TANG Hong-bo(Key Laboratory of Jiangxi University for Applied Chemistry and Chemical Biology,Yichun University,Yichun 336000,Chin)

机构地区：[1]宜春学院江西省高校应用化学与化学生物学重点实验室,江西宜春336000

出　　处：《电镀与涂饰》2018年第14期621-625,共5页Electroplating & Finishing

摘　　要：将六硼化镧(La B6)、氧化石墨烯(GO)与基料聚乙烯醇缩丁醛(PVB)共混,制备了纳米复合涂料,并通过提拉法在玻璃上制成透明隔热薄膜。采用X射线衍射仪、扫描电镜和红外光谱仪对薄膜的结构进行表征,用紫外-可见-近红外分光光度计和热重分析仪测试了薄膜的光学性能和热稳定性。添加0.25%GO和0.30%La B6的PVB薄膜不仅在可见光区有较好的透过率(73.4%),对近红外光有较好的阻隔(平均阻隔率33.3%),而且热稳定性相比纯PVB薄膜有一定程度的提高。A nanocomposite coating material was prepared by blending polyvinyl butyral（PVB） with lanthanum hexaboride（LaB_6） and graphene oxide（GO）, and then used to form a transparent heat insulation thin film on glass by dip coating method. The structures of different thin films were characterized by X-ray diffraction, scanning electron microscopy, and infrared spectroscopy, and their optical properties and thermal stability were tested using ultraviolet-visible-near infrared spectrophotometer and thermogravimetric analyzer. The PVB film containing 0.25% GO and 0.30% LaB_6 not only has a good transmittance（73.4%） in visible light region and good barrier effect to near infrared light（average infrared blocking rate 33.3%）, but also has a better thermal stability as compared with the pure PVB film.

关 键 词：六硼化镧 氧化石墨烯 聚乙烯醇缩丁醛 透明隔热涂料 热稳定性 光学 透过率 

分 类 号：TQ630.7[化学工程—精细化工]