Reflection type diffuse scattering greenhouse film and preparation method thereof

Abstract

The invention discloses a reflective diffuse-scattering greenhouse film and a preparation method thereof, and belongs to the technical field of agricultural film production, the reflective diffuse-scattering greenhouse film comprises an outer layer, a middle layer and an inner layer which are sequentially arranged, the middle layer comprises low density polyethylene (LDPE), metallocene linear low density polyethylene (mLLDPE), a light stabilizer, an antioxidant, an ultraviolet light absorber and silver masterbatch, and the inner layer comprises an outer layer, a middle layer and an inner layer which are sequentially arranged. The silver masterbatch comprises polyethylene, aluminum powder and mica powder. According to the reflective diffuse scattering greenhouse film and the preparation method thereof, the aluminum powder and the mica powder in a certain proportion are added into the middle layer, silver spots are generated in the agricultural film to reflect and scatter light rays, the light ray transmittance can be reduced, the transmitted light rays can be scattered, and the light rays are prevented from being scattered. The agricultural film reduces the light transmittance by reflecting light instead of absorbing light, so that the service life of the agricultural film can be remarkably prolonged, and meanwhile, a cooling effect can be achieved.

Description

technical field [0001] The invention relates to a reflective diffuse scattering greenhouse film and a preparation method thereof, belonging to the technical field of agricultural film production. Background technique [0002] Greenhouses formed by agricultural film covering can provide suitable temperature, humidity, light and other environments for crop growth in four seasons, so greenhouses are widely used in agricultural planting and horticultural facilities coverage. Diffuse scattering agricultural film is to add functional fillers to the agricultural film raw materials, so that the light will be scattered when passing through the agricultural film, and the light will be distributed more evenly after reaching the shed, which can irradiate more crop leaves and enhance the photosynthesis of crops. Increase the utilization rate of light and promote the growth of crops. Moreover, the increase in the proportion of diffuse light can also eliminate the peak temperature at noon...

AI Technical Summary

Problems solved by technology

However, for areas with strong sunlight or crops that require lower light intensity, ordinary diffuse scattering products cannot be applied due to insufficient scattering or high light transmittance.

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