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Multifunctional polyvinyl shed film

A multifunctional, polyethylene technology, applied in the field of shed film, can solve the problems of poor aging resistance, insufficient strength, environmental pollution, etc., and achieve the effect of improving the puncture strength

Inactive Publication Date: 2014-04-16
安徽大诚明农业科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing polyethylene shed film is mainly processed from ordinary polyethylene resin. Its disadvantages lie in many problems such as single function, no light conversion ability, poor aging resistance, inability to prevent fog droplets, and insufficient strength. In agricultural production, it is not conducive to the growth of crops, and the product life is short, easy to wear and tear, and it also causes different degrees of pollution to the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] A multifunctional polyethylene shed film, the composition of which raw materials includes, in parts by mass: low-density polyethylene as base material 95, metallocene linear polyethylene base material 18, red-orange light conversion agent 0.05, blue light conversion agent 0.05, Antioxidant 0.6, monoglyceride 0.5, ultraviolet absorber 0.3; after mixing the above raw materials, heat them, the heating temperature is 180 ℃, and the heating time is 6h. Squeeze into a machine head to discharge the material, the discharge material is cooled by cooling air, and then go through the secondary traction to the primary traction, and finally wind and pack the finished product.

[0011] Further, the antioxidant is selected from 1076, and the ultraviolet absorber is selected from UV-531.

Embodiment 2

[0013] A multifunctional polyethylene shed film, the composition of which raw materials includes, in parts by mass: low-density polyethylene as base material 110, metallocene linear polyethylene base material 22, red-orange light conversion agent 1.1, blue light conversion agent 1.1, Antioxidant 1.6, monoglyceride 1.4, ultraviolet absorber 0.8; after mixing the above raw materials, heat them at a temperature of 190°C for a heating time of 7 hours. Squeeze into a machine head to discharge the material, the discharge material is cooled by cooling air, and then go through the secondary traction to the primary traction, and finally wind and pack the finished product.

Embodiment 3

[0015] A multifunctional polyethylene shed film, the composition of which raw materials includes, in parts by mass: low-density polyethylene as the base material 100, metallocene linear polyethylene base material 20, red-orange light conversion agent 0.08, blue light conversion agent 0.08, Antioxidant 0.8, monoglyceride 0.9, ultraviolet absorber 0.5; the above raw materials are mixed and then heated at a heating temperature of 185°C for a heating time of 6.5 hours. After the heating is completed, three extruders feed simultaneously. And squeeze into a machine head to discharge the material, the material is cooled by cooling air, and then it is drawn from the second to the first, and finally the finished product is rolled and packaged.

[0016] Extrusion equipment used to process the film was commercially available.

[0017] Among the above examples, Example 3 has the best effect. Through photoconversion and modification of materials, the ultraviolet light at 290-390nm in sunli...

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PUM

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Abstract

The invention discloses a multifunctional polyvinyl shed film which comprises the following raw materials in parts by weight: 95-110 parts of low density polyethylene, 18-22 parts of metallocene linear polyvinyl base, 0.05-1.1 parts of a red and orange light conversion agent, 0.05-1.1 parts of a blue light conversion agent, 0.6-1.6 parts of an anti-oxidant, 0.5-1.4 parts of monoglyceryl ester and 0.3-0.8 part of an ultraviolet light absorber. The prepared process comprises the following steps: mixing the raw materials, heating at the temperature of 185 DEG C for 6.5 hours, performing feeding by three extruding machines after the heating, discharging by one extruded machine head, cooling the discharging by cooling air, performing secondary traction to primary traction, finally, winding and packing finished products. The agricultural film produced has 5-year effective life, anti-drop available period extended to 6 months, and the stretching and puncture strength improved by 20 percent, and meanwhile, has high transmission rate and low haze both similar to that of the pure EVA film. Due to the adoption of the shed film, the crop yield is increased by 25 percent.

Description

[0001] technical field [0002] The invention relates to a greenhouse film, in particular to a multifunctional polyethylene greenhouse film. Background technique [0003] The existing polyethylene shed film is mainly processed from ordinary polyethylene resin. Its disadvantages lie in many problems such as single function, no light conversion ability, poor aging resistance, inability to prevent fog droplets, and insufficient strength. In agricultural production, it is not conducive to the growth of crops, and the product life is short, easy to wear and tear, and it also causes pollution to the environment to varying degrees. Contents of the invention [0004] The purpose of the present invention is to overcome the above-mentioned shortcomings in the prior art, and provide a multifunctional polyethylene shed film with light conversion, aging resistance, anti-fogging and high strength. [0005] In order to achieve the above object, the technical means adopted in the pres...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/08C08K13/08C08K11/00
CPCC08L23/06C08J5/18C08J2323/06C08J2423/06C08L2203/16C08L2205/025C08L2207/066
Inventor 张猛
Owner 安徽大诚明农业科技股份有限公司