A kind of degradable multifunctional polyethylene film for agriculture and preparation method thereof

A multifunctional, polyethylene technology, applied in the agricultural field, can solve the problems of inconvenience, low absorption rate and poor air permeability of pesticides and herbicides, and achieve the effects of being suitable for large-scale production, stable release and simple preparation method.

Active Publication Date: 2019-01-08
容鑫新材料(江苏)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is more time-consuming and inefficient
Moreover, after covering the plastic film, it also brings inconvenience to the pesticides and herbicides, and due to the covering of the plastic film, the absorption rate is low
[0004] On the other hand, most of the existing mulches are hard-to-degrade plastic mulches, which are not environmentally friendly, and the recycling is time-consuming and laborious, which is not convenient enough
Moreover, the existing plastic mulches generally have poor water retention and air permeability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A degradable multifunctional polyethylene mulch film for agriculture, the raw material of which includes the following components:

[0049] 85wt% polyethylene,

[0050] Polyvinyl alcohol 6wt%,

[0051] Multifunctional masterbatch 6wt%,

[0052] Lubricant (calcium stearate) 1.5wt%,

[0053] Doped nano titanium dioxide (doped with N, P, K with a total doping amount of 2wt%) 1wt%,

[0054] Silane coupling agent (KH550) 0.5%.

[0055] Wherein, the multifunctional masterbatch includes a quick-release layer, a slow-release layer and a coating layer from the inside to the outside; the quick-release layer is composed of the following materials: chemical oxygenator (calcium peroxide) 20wt%, insecticide Ingredients (dinotefuran) 10wt%, herbicidal particles 18wt%, composite gel carrier 45wt%, modified calcium oxide 5wt%, povidone 2wt%; the sustained release layer is composed of the following materials: chemical oxygenator (over Calcium oxide) 20wt%, insecticidal ingredient (dinotefuran) 10w...

Embodiment 2

[0058] A degradable multifunctional polyethylene mulch film for agriculture, the raw material of which includes the following components:

[0059] 80wt% polyethylene,

[0060] Polyvinyl alcohol 8wt%,

[0061] Multifunctional masterbatch 8wt%,

[0062] Lubricant (oxidized polyethylene wax, paraffin wax) 1.75% by weight,

[0063] Doped nano titanium dioxide (doped with Fe and Ca with a total doping amount of 1wt%) 1.5wt%,

[0064] Silane coupling agent (KH560) 0.75%.

[0065] Wherein, the multifunctional masterbatch includes a quick-release layer, a slow-release layer and a coating layer in turn from the inside to the outside; the quick-release layer is composed of the following substances: chemical oxygenator (carbamide peroxide) 15wt%, insecticide Ingredients (clothianidin) 15wt%, herbicidal particles 20wt%, composite gel carrier 45wt%, modified calcium oxide 4wt%, povidone 1wt%; the sustained release layer is composed of the following materials: chemical oxygenator (over Urea oxide) 15...

Embodiment 3

[0068] A degradable multifunctional polyethylene mulch film for agriculture, the raw material of which includes the following components:

[0069] Polyethylene 90wt%,

[0070] Polyvinyl alcohol 4wt%,

[0071] Multifunctional masterbatch 4wt%,

[0072] Lubricant (glyceryl stearate) 1.25wt%,

[0073] Doped nano titanium dioxide (doped with N, Fe, Ca with a total doping amount of 3wt%) 0.5wt%,

[0074] Silane coupling agent (KH570) 0.25%.

[0075] Wherein, the multifunctional masterbatch includes a quick-release layer, a slow-release layer and a coating layer from the inside to the outside; the quick-release layer is composed of the following substances: chemical oxygenator (sodium percarbonate) 25wt%, insecticide Ingredients (thiacloprid, imidacloprid) 5wt%, herbicidal particles 16wt%, composite gel carrier 45wt%, modified calcium oxide 6wt%, povidone 3wt%; the sustained release layer is composed of the following substances: chemical oxygenator (Sodium percarbonate) 25wt%, insecticidal in...

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Abstract

The invention relates to the field of agriculture and discloses an agricultural degradable multifunctional polyethylene mulching film and a preparation method thereof. The agricultural degradable multifunctional polyethylene mulching film comprises the following components: 80-90wt% of polyethylene, 4-8wt% of polyvinyl alcohol, 4-8wt% of multifunctional master batch, 0.5-2.5wt% of a lubricant, 0.5-1.5wt% of doped nano titanium dioxide and 0.25-0.75% of a silane coupling agent. Due to the doped nano titanium dioxide and the multifunctional master batch, the agricultural degradable multifunctional polyethylene mulching film disclosed by the invention has functions of natural photocatalytic degradation, water retention, breathability, oxygen production, insect killing and weeding. In addition, a slow-release effect can be achieved for chemical oxygen producers and insect killing components, and active components can be continuously and stably released. The preparation method disclosed by the invention is simple, reasonable, and applicable to large-scale production.

Description

Technical field [0001] The invention relates to the field of agriculture, in particular to a degradable multifunctional polyethylene film for agriculture and a preparation method thereof. Background technique [0002] When the plant is in the seedling stage, it is in the rapid growth stage, especially the roots grow very fast. Rapid growth requires the roots to absorb a lot of water and nutrients, and the absorption of water and nutrients mainly depends on the roots for a large amount of respiration to provide energy. Therefore, in order to enhance the respiration of seedling roots, it is necessary to loosen the soil frequently, keep the soil fluffy, and increase the oxygen content. But at the same time, because the seedlings are fragile, they usually need to be covered with mulch to keep the soil warm and water. As a result, artificial soil loosening cannot be easily carried out after covering with mulch. For this reason, people have developed an aerator that can release oxyg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08L29/04C08L23/30C08L91/06C08L39/06C08L5/16C08L33/08C08K13/06C08K9/04C08K3/22C08K5/5435C08K5/544C08J3/22
CPCA01G13/0275C08J3/226C08J5/18C08J2323/06C08J2429/04C08K2201/011C08K2201/014C08L23/06C08L2201/06C08L2203/16C08L2205/025C08L2205/035C08L29/04C08L39/06C08L5/16C08L33/08C08K13/06C08K9/04C08K2003/2241C08K5/098C08K5/544C08K2003/2206C08L23/30C08L91/06C08K5/5435C08K5/103
Inventor 彭万鹏
Owner 容鑫新材料(江苏)有限公司
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