光谱学与光谱分析, 2012, 32 (1): 96, 网络出版: 2012-02-20
聚乙烯醇薄膜的红外吸收特性与保温性的关联
The Relationship between FTIR Spectra of PVA Film and Its Heat Preservation Capability
透光率 雾度 红外吸收率 红外透射率 保温能力 Light transmittance Haze Absorbance of IR Transmittance of IR Heat preservation capability
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7～14 μm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。
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 μm 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.
崔海龙, 徐文国, 何福庆, 王朝晖, 焦红文, 卢士香. 聚乙烯醇薄膜的红外吸收特性与保温性的关联[J]. 光谱学与光谱分析, 2012, 32(1): 96. CUI Hai-long, XU Wen-guo, HE Fu-qing, WANG Zhao-hui, JIAO Hong-wen, LU Shi-xiang. The Relationship between FTIR Spectra of PVA Film and Its Heat Preservation Capability[J]. Spectroscopy and Spectral Analysis, 2012, 32(1): 96.
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