Diffusion agricultural film

An agricultural film and diffusion technology, which is applied in the field of agricultural film formulations, can solve problems such as damage to concave and convex parts, and achieve the effects of reducing damage, increasing yield, and reducing shadow area

Active Publication Date: 2014-10-01
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method produces astigmatism agricultural film, which needs to upgrade the existing equipment, and because the matrix material of the agricultural f

Method used

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  • Diffusion agricultural film
  • Diffusion agricultural film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Diffuse masterbatch is prepared according to the following formula in weight ratio:

[0024] LDPE: 7.5 parts; LLDPE: 2.5 parts; Zinc oxide: 1 part; Talc powder: 1 part; Magnesium stearate: 0.5 parts; Polyethylene wax: 0.3 parts.

[0025] Preparation method of agricultural film: Stir the well-proportioned masterbatch evenly, so that all the additives evenly adhere to the surface of the plastic, put it on the extruder, extrude and granulate. Using LDPE as the matrix resin, blow molding is carried out according to the ratio of masterbatch: matrix resin = 1:20, and the thickness of the prepared film is 0.03mm. Before blow molding, phthalocyanine blue dye, dripping agent and anti-ultraviolet agent are added, so that the prepared agricultural film has high-performance agricultural film with blue color, anti-dripping and anti-aging properties while scattering and penetrating sunlight.

[0026] As shown in the accompanying drawings, wherein N represents the traditional agricul...

Embodiment 2

[0028] Diffuse masterbatch is prepared according to the following formula in weight ratio:

[0029] LDPE: 10 parts; LLDPE: 1 part; Magnesium oxide: 1.5 parts; Talc powder: 1 part; Magnesium stearate: 0.8 parts; Polyethylene wax: 0.2 parts.

[0030] Preparation method of agricultural film: Stir the well-proportioned masterbatch evenly, so that all the additives evenly adhere to the surface of the plastic, put it on the extruder, extrude and granulate. Using LDPE as the matrix resin, blow molding is performed according to the ratio of masterbatch: matrix resin = 1:10, and the thickness of the prepared film is 0.1mm. Before blow molding, dripping agent and anti-ultraviolet agent are added, so that the prepared agricultural film has milky white high-performance, long-life scattering agricultural film with anti-dripping and anti-aging properties while scattering sunlight.

Embodiment 3

[0032] Diffuse masterbatch is prepared according to the following formula in weight ratio:

[0033] LDPE: 9 parts; LLDPE: 2 parts; Zinc oxide: 0.6 parts; Magnesium oxide: 0.7 parts; Talc powder: 0.8 parts; Magnesium stearate: 1 part; Polyethylene wax: 0.4 parts.

[0034] Preparation method of agricultural film: Stir the well-proportioned masterbatch evenly, so that all the additives evenly adhere to the surface of the plastic, put it on the extruder, extrude and granulate. Using LDPE as the matrix resin, blow molding is carried out according to the ratio of masterbatch: matrix resin = 1:40, and the thickness of the prepared film is 0.02mm. Before blow molding, the dripping agent and anti-ultraviolet agent purchased from the market are added, so that the prepared agricultural film has milky white high-performance, long-life scattering agricultural film with anti-dripping and anti-aging properties while scattering sunlight.

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Abstract

The invention provides a diffusion agricultural film which is prepared by uniformly mixing a diffusion parent material with matrix resin and subsequently performing blow molding; and LDPE (Low-Density Polyethylene) is taken as the matrix resin. The diffusion agricultural film is characterized in that the diffusion parent material comprises at least one of zinc oxide or magnesium oxide; both the zinc oxide and the magnesium oxide are greatly different from refractive index of the matrix resin LDPE and take a shielding effect on infrared light. The prepared diffusion agricultural film has functions of achieving irradiation uniformity of light in a greenhouse and reducing the shaded area caused by direct irradiation of the light and the damage to the crops; and meanwhile, the zinc oxide and the magnesium oxide take a good shielding effect the on infrared light, so that the agricultural film has good heat insulation property. Compared with the conventional agricultural film, the temperature in the greenhouse is increased by 2-3 DEG C, so that the greenhouse effect is achieved to a certain extent, thus the effect of increasing the yield of the crops can be achieved.

Description

technical field [0001] The invention relates to a formulation of an agricultural film, in particular to an agricultural film that can irradiate crops in the form of scattering or diffusion after light passes through the film. Background technique [0002] The traditional transparent agricultural film mainly passes through direct sunlight, and the crops on the back side cannot receive sunlight and realize photosynthesis. Moreover, the upper part of the crop itself will also block the lower part, resulting in uneven sunlight irradiation on the crops, some of which are receiving sunlight, and the other part cannot perform photosynthesis due to the emergence of shadows. In summer, the crops under direct sunlight will have local high temperature, which will cause the semipermeability loss of plant cells and biofilm, the passivation and deformation of proteins, and in severe cases, it can cause the death of plants. The traditional agricultural film can hardly improve the uneven g...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/08C08K3/22C08K3/34C08K5/098
CPCC08J3/226C08J5/18C08J2323/06C08J2423/06C08J2423/08C08L23/06C08L2203/16C08L2205/025C08L2205/035C08L2207/066C08L23/0815C08K2003/2296C08K2003/222C08K3/34C08K5/098
Inventor 徐刚梁溥森熊斌李育坚
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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