Agricultural black polyethylene mulching film and preparation method thereof

A polyethylene and polyvinyl alcohol technology, applied in the agricultural field, can solve the problems of lack of slow release effect, time-consuming and laborious recycling, poor air permeability, etc., to achieve strong redox ability, improve degradability, and improve air permeability. Effect

Active Publication Date: 2017-05-31
广州宇润包装制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the role of its oxygenizer is to provide oxygen for bacterial respiration, not for plant roots, so the amount of oxygen released and the release time are not applicable to seedlings
Moreover, the above-mentioned oxygenates are easy to be released in large quantities at the initial stage, and do not have a stable slow-release effect, resulting in a short time period for oxygenation.
[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 kind of agricultural black polyethylene film, its raw material comprises following components:

[0049] Polyethylene 75wt%,

[0050] Black masterbatch 5wt%

[0051] Polyvinyl alcohol 6wt%,

[0052] Multifunctional masterbatch 6wt%,

[0053] Lubricant (calcium stearate) 1.5wt%,

[0054] Doped nano-titanium dioxide (doped with a total doping amount of 2wt% N, P, K) 1wt%,

[0055] Silane coupling agent (KH550) 0.5%.

[0056] Wherein, the multifunctional masterbatch includes an immediate-release layer, a sustained-release layer and a coating layer from the inside to the outside; the immediate-release layer is composed of the following substances: chemical oxygenate (calcium peroxide) 25wt%, insecticidal Composition (dinotefuran) 15wt%, composite gel carrier 53wt%, modified calcium oxide 5wt%, povidone 2wt%; The slow-release layer is made up of the following substances: chemical oxygen enhancer (calcium peroxide) 25wt% 15 wt% of the insecticidal component (dinotefura...

Embodiment 2

[0059] A kind of agricultural black polyethylene film, its raw material comprises following components:

[0060] Polyethylene 75wt%,

[0061] Black masterbatch 5wt%,

[0062] Polyvinyl alcohol 8wt%,

[0063] Multifunctional masterbatch 8wt%,

[0064] Lubricant (oxidized polyethylene wax, paraffin) 1.75wt%,

[0065] Doped nano-titanium dioxide (doped with a total doping amount of 1wt% Fe, Ca) 1.5wt%,

[0066] Silane coupling agent (KH560) 0.75%.

[0067] Wherein, the multifunctional masterbatch includes an immediate-release layer, a sustained-release layer, and a coating layer from the inside to the outside; the immediate-release layer is composed of the following materials: chemical oxygenate (carbamide peroxide) 20wt%, insecticidal Composition (clothianidin) 20wt%, composite gel carrier 55wt%, modified calcium oxide 4wt%, povidone 1wt%; The slow-release layer is made up of the following substances: chemical oxygenate (carbamide peroxide) 20wt% , 20 wt% of the insecticid...

Embodiment 3

[0070] A kind of agricultural black polyethylene film, its raw material comprises following components:

[0071] Polyethylene 85wt%,

[0072] Black masterbatch 5wt%,

[0073] Polyvinyl alcohol 4wt%,

[0074] Multifunctional masterbatch 4wt%,

[0075] Lubricating agent (glyceryl stearate) 1.25wt%,

[0076] Doped nano titanium dioxide (doped with a total doping amount of 3wt% N, Fe, Ca) 0.5wt%,

[0077] Silane coupling agent (KH570) 0.25%.

[0078] Wherein, the multifunctional masterbatch includes an immediate-release layer, a sustained-release layer and a coating layer from the inside to the outside; the immediate-release layer is composed of the following materials: chemical oxygenate (sodium percarbonate) 30wt%, insecticidal Composition (thiacloprid, imidacloprid) 10wt%, composite gel carrier 51wt%, modified calcium oxide 6wt%, povidone 3wt%; The slow-release layer is made up of the following materials: chemical oxygen enhancer (sodium percarbonate) 30wt%, insecticidal ...

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Abstract

The invention relates to the field of agriculture and discloses an agricultural black polyethylene mulching film and a preparation method thereof. The agricultural black polyethylene mulching film comprises the following components: 75-85wt% of polyethylene, 4-6wt% of black master batch, 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. The agricultural black polyethylene mulching film is black and capable of shielding light, so that weeds cannot survive as photosynthesis is inhibited. The multifunctional master batch has functions of water retention, oxygen production and insect killing. 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 doped nano titanium dioxide has a photocatalysis property, and thus the mulching film can be slowly degraded. 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 black polyethylene mulch 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, and its root system is not sound enough, so the ability to snatch nutrients in the soil is not strong enough, and herbicides generally need to be applied. Herbicides refer to agents that can completely or selectively kill weeds, also known as herbicides, a class of substances used to eliminate or inhibit plant growth. The commonly used species are organic compounds, which can be widely used to control harmful plants such as weeds, shrubs, and trees in farmland, orchards, flower nurseries, grasslands and non-cultivated land, railway lines, rivers, reservoirs, warehouses, etc. However, although herbicides have certain selectivity, they still have more or less negative effects on seedlings. [0003] In a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L29/04C08L23/12C08L67/00C08K13/06C08K9/06C08K3/04C08K3/22C08J3/22A01G13/02
CPCA01G13/0275C08J3/226C08J5/18C08J2323/06C08J2423/06C08J2423/12C08J2467/00C08K2201/011C08L23/06C08L2201/06C08L2203/16C08L2205/02C08L2205/035C08L29/04C08K13/06C08K9/06C08K3/04C08K2003/2241
Inventor 彭万鹏
Owner 广州宇润包装制品有限公司
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