通过熔融插层法制备了具有光转换功能的纳米聚乙烯薄膜,用XRD、UV-Vis、FL、TGA等方法对转光膜的性能进行了分析研究,结果表明新型纳米转光膜能有效地吸收对植物有害、对温室棚膜有破坏作用的206～360 nm的紫外光,发射360～500 nm的蓝紫光,且其具有良好的抗荧光衰减性能.转光膜在红橙光和蓝紫光区的光质比例分别比对照高2.43％和1.82％,有利于植物进行光合作用,且在UV-A、UV-B、UV-C光区的光质比例分别低于对照1.35％,4.97％,5.54％,这在一定程度上会降低紫外线对塑棚温室内作物及棚膜的损害.与对照膜相比,纳米转光膜有良好的保温性能,且可有效提高塑棚温室内的空气温度和土壤温度,利于作物生长,农田试验结果表明,新型纳米转光膜可有效促进生菜的生长,用其处理的生菜鲜重比对照增加了14.03％,可有效提高作物的产量.
The nano photo conversion films were prepared by intercalation method.The films were characterized by XRD,UV Vis,FL,TGA.The results showed that the photo-conversion film could effectively absorb uhraviolet light ranged from 206 to 360 nm which was harmful to plants and greenhouse film,convert it into blue-vi olet light ranged from 380 to 485 nm and show a good performance of fluoresence anti attention.In the red-or ange and blue violet region,the transmittances of photo conversion film were 2.43％ and 1.82％ respectively higher than that of the control,which wasconducive to plant photosynthesis.In the UV-A,UV-B,UV-C light district,the transmittanceswere 1.35％,4.97％,5.54％ respectively lower than that of the control,which could reduce UV darnage to the plastic indoor crops and greenhouse film to some extent.Compared with the control membrane,the new nano conversion film has good heat resistance,and can raise the air and soil temperature several degrees,which is favorable to crop growth.Results of farmland experiment show that the nano photo conversion films could effectively promote the growth of lettuce and the average fresh weigh value of lettuce in creased 14.03％ compared to the control.Thus,the photo-conversion films promote more crops growth.
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