摘要
采用熔融共混法制备了线性低密度聚乙烯 (LLDPE) /纳米SiO2 复合材料并吹制成膜。用红外光谱法和紫外光谱法对薄膜的红外吸收性能和紫外吸收性能进行了研究 ,用雾度计测定了薄膜的透光率和雾度。结果表明 ,复合材料薄膜对 7～ 11μm波段的长波红外线和 30 0nm以下的紫外光具有很好的吸收性能 ;薄膜的透光率与基体无明显差别 ,但雾度显著提高。纳米SiO2 的表面处理方法对复合材料薄膜光学性能有显著影响。
An agricultural film composed of LLDPE and nano-silica has been prepared and characterized by FTIR, UV-Vis spectrophotometry and haze value measurement. The film shows good ability to absorb infrared light ranged from 7 μm to 11 μm and ultraviolet below 300 nm. For example, the IR absorptivity of film containing 9.1%(mass fraction) nano-silica was 58%, nearly 3 times that of the pure LLDPE film. Increase of the content of nano-silica powder significantly led to the increase of the haze value of the film,but little changed the visible light transmittance. The surface-treatment method of nano-SiO 2 has great influence on the optical properties of the composites film.
出处
《应用化学》
CAS
CSCD
北大核心
2003年第7期638-642,共5页
Chinese Journal of Applied Chemistry
基金
中国石油化工股份有限公司基础研究基金资助项目 (X5 0 0 0 0 7)
