Blue tungsten oxide nano powder may be applied for producing thermal absorption agricultural plastic film. The agricultural plastic film obtained has the characteristics of visible light transmittance of 86%~92% and haze less than 0.8%. Also, it is anti-fog. Besides, such film has a thickness of 0.008mm, which meets national mandatory standards. In addition, the transparent agricultural film produced by adding nano grain size blue tungsten oxide powder has a certain anti-ultraviolet ding, so that the ultraviolet rays irradiated through the agricultural film are sufficient. In other words, the crop is prevented from being excessively exposed to ultraviolet rays. And the agricultural film can play a certain bactericidal effect.
Moreover, compared with the general agricultural film, the thermal absorption agricultural film of nano grain size blue tungsten oxide has excellent performances such as sun protection, aging resistance, anti-corrosion, acid resistance and alkali resistance. And therefore it can be effectively used outdoors for many years, eliminating complicated processes such as changing films and reducing the cost of film replacement.
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