| 聚乙烯醇薄膜的红外吸收特性与保温性的关联 |
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| 作者姓名： | Cui HL Xu WG He FQ Wang ZH Jiao HW Lu SX |
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| 作者单位： | 北京理工大学理学院化学系;北京华盾雪花塑料集团有限责任公司;广东华南精细化工研究院 |
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| 基金项目： | 国家自然科学基金项目(20773014,20933001)资助 |
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| 摘 要： | 将聚乙烯醇(PVA)、聚乙烯(PE)、乙烯-乙酸乙烯酯共聚物(EVA)吹制成膜,分别研究了三种薄膜的光学性能、红外透射率及其对农业温室增温、保温能力的影响。PVA薄膜雾度值较PE和EVA薄膜分别降低了15%和12%,可有效提升薄膜覆盖温室的白日增温能力;在温室夜晚辐射散热集中的7～14μm波长范围内,PVA薄膜的红外透射率仅为16.2%,比EVA棚膜低20%,比PE棚膜低50%,PVA薄膜覆盖温室可大幅提高温室保温能力。
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| 关 键 词： | 透光率 雾度 红外吸收率 红外透射率 保温能力 |
The relationship between FTIR spectra of PVA film and its heat preservation capability |
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| Cui HL,Xu WG,He FQ,Wang ZH,Jiao HW,Lu SX.The relationship between FTIR spectra of PVA film and its heat preservation capability[J].Spectroscopy and Spectral Analysis,2012,32(1):96-98. |
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| Authors: | Cui Hai-long Xu Wen-guo He Fu-qing Wang Zhao-hui Jiao Hong-wen Lu Shi-xiang |
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| Institution: | Department of Chemistry, School of Science, Beijing Institute of Technology, Beijing 100081, China. cuihailong1976@sina.com |
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| Abstract: | Polyvinyl alcohol (PVA), polyethylene (PE) and ethylene-vinyl acetate copolymer (EVA) film was prepared. The optic capability, infrared transmittance and heat preservation capability of the films were studied respectively. The result indicated that the haze degree of the PVA film decreased about 15% and 12% than PE film and EVA film; PVA film transmittance of IR was more or less than other films in the 7-14 microm wavelength range so that the temperature of greenhouse could be increased effectively in daylight. It was just 16.2% about 20% less than EVA film, and 50% less than PE film. The PVA film could be used as agricultural film in greenhouse to promote heat preservation performance greatly. |
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| Keywords: | Light transmittance Haze Absorbance of IR Transmittance of IR Heat preservat ion capability |
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