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.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
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
关键词
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 preservat ion capability
作者简介
崔海龙，1976年生，北京理工大学理学院化学系博士研究生e-mail：cuihailong1976@sina．com，zhaohui7512@163．com
