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

作　　者：崔海龙[1,2] 徐文国[1] 何福庆[2] 王朝晖 焦红文 卢士香[1] 

机构地区：[1]北京理工大学理学院化学系,北京100081 [2]北京华盾雪花塑料集团有限责任公司,北京100160 [3]广东华南精细化工研究院,广东新会529141

出　　处：《光谱学与光谱分析》2012年第1期96-98,共3页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金项目(20773014;20933001)资助

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。Polyvinyl alcohol（PVA）,polyethylene（PE） and e thylene-vinyl acetate copolymer（EVA） film was prepared.The optic capability, i nfrared transmittance and heat preservation capability of the films were studied respectively.The result indicated that the haze degree of the PVA film decreas ed 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 tem p erature 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 perform ance greatly.

关 键 词：透光率 雾度 红外吸收率 红外透射率 保温能力 

分 类 号：TQ325.1[化学工程—合成树脂塑料工业]