Weeding mulching film masterbatch and preparation method thereof

A technology for weeding film and masterbatch, which is applied in the direction of plant protection cover and the like, can solve the problems of environmental protection or performance defects of weeding film masterbatch, unreasonable dosage of herbicides, and volatile pollution of the environment, etc., so as to improve the control effect and prolong the weeding period. , the effect of expanding the scope of weeding

Inactive Publication Date: 2013-01-30
常璟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Weed-killing mulch film containing sunscreening agent. This kind of mulch film is based on low-density polyethylene resin and linear low-density polyethylene resin, and is added with black masterbatch and additives. It is blown into a film, and its thickness is controlled at (0.008± 0.002) mm, there is also a large amount of production abroad, but this kind of mulch affects the rise of ground temperature
[0006] Therefore, the single-layer weed-killing mulch film containing medicine on both sides is widely used in my country's agriculture. However, the production of weed-killing mulch film is from the ratio of raw materials to the production of mulch film products. Due to the characteristics of its manufacturing process, the process of blown mulch film The raw material is generally liquid, so its disadvantages are: due to the unreasonable amount of herbicide, it is easy to slip during the extrusion process, resulting in unstable extrusion, uneven thickness of the film, and the herbicide is always in the liquid state. Volatile pollution, etc.
[0011] In summary, the selection of herbicides in Chinese patent 200410024009.2 directly leads to defects in the environmental protection or performance of the prepared herbicide mulch masterbatch, and most of these herbicides are selective, and the weeding range is small, which affects the weeding performance
Therefore, there is an urgent need in China for a method that can solve the problem of unreasonable dosage of herbicides, which can easily slip during the extrusion process, resulting in unstable extrusion, uneven thickness of the film, and herbicides that are always in a liquid state and are volatile and pollute the environment. Masterbatches for the manufacture of weed-killing mulches that can guarantee its weed-killing performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Grind 75 kg of sodium silicate into micron or nanometer grades for later use, then mix 20 kg of low-density polyethylene with 3 kg of fenfebicide + dimethyltetrachloride at a weight ratio of 2:3 for later use, and then mix 1.6 kg of The 2101 emulsifier, sodium silicate and 0.4 kg of epoxidized soybean oil were placed in the mixed solution of low-density polyethylene and fenben+dimethyltetrachloride and stirred evenly, and then extruded with an extruder to granulate and dry.

Embodiment 2

[0027] 54 kilograms of calcium carbonate is pulverized into micron or nanoscale for later use, and then 40 kilograms of linear low density polyethylene and 4.7 kilograms of simazine+dimethyltetrachloride compounded with a weight ratio of 1:1 are evenly mixed for later use, and then the Put 1 kg of Nongru 500 emulsifier, calcium carbonate and 0.3 kg of epoxy resin into the compound mixture of linear low density polyethylene and simazine + dimethyltetrachloride and stir evenly, then extrude and granulate and dry with an extruder .

Embodiment 3

[0029] Grind 45 kg of magnesium sulfate into micron or nano-scale for later use, then mix 46.9 kg of high-density polyethylene with 5 kg of bentazone + dimethyltetrachloride compound with a weight ratio of 3:2 for further use, and then mix 3 kg of The 2101 emulsifier, magnesium sulfate and 0.1 kg of epoxidized soybean oil were placed in the compound mixture of high-density polyethylene and bentazone + dimethyltetrachloride and stirred evenly, and then extruded with an extruder to granulate and dry.

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PUM

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Abstract

The invention discloses a weeding mulching film masterbatch, wherein weed killers with different weeding spectrums are mixed for use; meanwhile, a granular product is provided for the production of a weeding mulching film; and the weeding mulching film masterbatch can be directly used for the production of the weeding mulching film, so that the problems of high production cost caused by liquid formula, uneven mulching film in thickness caused by slippage of an extruding technology and volatility of the weeding killers and the like are prevented. The weeding mulching film masterbatch comprises the following components in weight percentage: 20-50% of polyethylene, 3-5% of weed killers, 1-3% of emulsifier, 45-75% of inorganic fillers and 0.1-0.4% of plasticizing stabilizer. The preparation method of the weeding mulching film masterbatch comprises the following steps of: grinding the inorganic fillers in micron scale or nanoscale for use, uniformly mixing polyethylene with the weed killers for use, adding the emulsifier, the inorganic fillers and the plasticizing stabilizer into a mixed solution of the polyethylene and the weed killers, uniformly stirring, extruding through an extruder, granulating and drying.

Description

technical field [0001] The invention relates to a weed-killing mulch, in particular to a masterbatch for making a weed-killing mulch. Background technique [0002] Weeding mulch is a new chemical weeding method developed in recent years. It is made by adding destructive or selective chemical herbicides to the production process of ordinary mulch. It is mainly used in new fields. [0003] Herbicide mulch can be divided into mulch containing herbicides and mulch containing sunscreens. [0004] Herbicide-containing mulch films include single-layer mulch films containing drugs on both sides, double-layer mulch films containing drugs on one side, and mulch films with herbicides on one side. Among them, double-layer mulch films containing drugs on one side and Weed-killing mulches with one-sided application of herbicides are difficult to popularize in China due to high production costs and complicated processes. Therefore, the domestic production of single-layer herbicide-contai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08K13/02C08K5/32C08K5/095C08K5/3492C08K5/46C08K5/435C08J3/22A01G13/02
Inventor 常璟
Owner 常璟
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