Preparation of EVOH Film and Infrared Spectroscopic Study of Its Heat Preservation Property
CUI Hai-long1, 3，WANG Zhao-hui2，JIAO Hong-wen3，LU Shi-xiang1，XU Wen-guo1
1. Chemistry Department, School of Science, Beijing Institute of Technology, Beijing 100081, China 2. Guangdong Huanan Fine Chemical Research Institute，Xinhui 529141, China 3. Beijing Huadunxuehua Plastics Corporation Co., Ltd., Beijing 100160，China
Abstract：EVOH, PE and EVA films were prepared by extrusive blowing techniques, the optic capability, transmittance, haze, infrared anti-transmittance and heat preservation of the films were studied by IR spectroscopy and optic block. The result indicated that the haze degree of the EVOH film decreased about 10% and 5% compared to PE film and EVA film respectively, EVOH film’s transmission of IR is much less than other films in the 2.5～25 μm wavelength range, it is just 9.03% in 7～14 μm wavelength range, and about 27% less than EVA film, while much less than PE film. It was found that EVOH film has much better capability of infrared anti-transmittance and point-blank light transmission than other two kinds of films. It was good for calefaction and heat preservation of greenhouse.
Key words：Agricultural film;Heat preservation;Haze;Infrared anti-transmittance;Transmission of IR
崔海龙1, 3，王朝晖2，焦红文3，卢士香1，徐文国1 . EVOH树脂薄膜制备及其保温性能的红外光谱研究 [J]. 光谱学与光谱分析, 2011, 31(06): 1518-1520.
CUI Hai-long1, 3，WANG Zhao-hui2，JIAO Hong-wen3，LU Shi-xiang1，XU Wen-guo1 . Preparation of EVOH Film and Infrared Spectroscopic Study of Its Heat Preservation Property . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2011, 31(06): 1518-1520.
