An agricultural vegetable greenhouse film that can specifically filter light waves below 390nm

Abstract

The invention provides an agricultural vegetable greenhouse film capable of specifically filtering light waves below 390 nm, and relates to the field of polymer film materials. The film comprises thefollowing components in parts by weight: 80-100 parts of polyvinyl chloride resin, 40-55 parts of polyvinylidene fluoride resin, 10-20 parts of cerium oxide coated nano zinc oxide, 0.1-0.5 parts of dicumyl peroxide, 5-15 parts of bismaleamic acid, 3-8 parts of starch, 1-5 parts of chitin, 1-5 parts of lauryl alcohol polyoxyethylene ether, 0.2-1 part of triphenyl phosphate, 1-2 parts of leveling agents BYK-346, 1-5 parts of dispersant agents, 1-5 parts of defoaming agents, 5-10 parts of toughening filler, and 10-16 parts of plasticizer. The vegetable greenhouse film has excellent tensile property and good light transmittance, and can specifically filter ultraviolet light with wavelengths below 390 nm.

Description

technical field [0001] The invention relates to the field of polymer film materials, in particular to an agricultural vegetable greenhouse film which can specifically filter light waves below 390nm. Background technique [0002] The vegetable greenhouse is a frame-covered structure with excellent thermal insulation performance. It appears that people can eat off-season vegetables. Generally, vegetable greenhouses use a bamboo structure or steel structure skeleton, covered with one or more layers of thermal insulation plastic film, thus forming a greenhouse space. The film can well prevent the loss of carbon dioxide produced by the growth of internal vegetables, so that the inside of the shed Has a good thermal insulation effect. [0003] In recent years, with the gradual promotion of greenhouses, more and more people are engaged in the production of vegetables in greenhouses. Greenhouses not only provide a comfortable growth environment for vegetables, but also provide fav...

AI Technical Summary

Problems solved by technology

In the preparation method of a long-acting light-converting agricultural plastic film of the present invention, the polyvinylidene chloride emulsion is automatically immersed in the Eu alkaline earth metal sulfide doped with rare earth ions, so that the metal sulfide is effectively wrapped, and the metal sulfide is prevented from directly contacting with the sulfide. Oxygen, water and carbon dioxide in the air react directly to increase the service life of the film. Although this invention improves the service life of the film, it has no positive effect on the control of agricultural pests

[0008] The patent with the notification number CN 108164830 A discloses a polypropylene material for filtering ultraviolet rays, including the following raw material components: polypropylene, modified ultraviolet filter glass powder, polymethyl methacrylate microbeads, SiO 2 / Al 2 o 3 / ZnO, the modified UV filter glass powder is prepared by the reaction of UV filter glass powder, Span 60, acrylic acid, methyl methacrylate, butyl methacrylate and 184 photoinitiator, and the UV filter glass powder is made of UV Filter glass, glass beads, high borate glass and rutile titanium dioxide reaction prepared, polymethyl methacrylate beads from sodium chloride aqueous solution, methyl methacrylate, Span 80, hydroxyethyl acrylate, poly Prepared by the reaction of oxyethylene lanolin ether, sorbitan monopalmitate and dibenzoyl peroxide, SiO 2 / Al 2 o 3 / ZnO is produced by the reaction of zinc oleate, aluminum tristearate, dimethyl silicone oil, ammonium carbonate, triethanolamine and Schiff base surfactants. Although this invention has excellent UV filter performance, the UV filter used Optical glass powder has poor filtering effect on 200-400nm ultraviolet light, and is not suitable for use in greenhouse films

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