A liquid fully degradable mulch film and its preparation method

A fully degradable, mulching technology, used in biocide-containing paints, coatings, antifouling/underwater coatings, etc., can solve problems such as soil compaction, soil erosion, crop yield decline, etc. The effect of hardening and preventing pests and diseases

Active Publication Date: 2021-12-24
LIAONING SHUNYI AGRI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to increase food production, agricultural plastic film is a good choice, but plastic film is difficult to degrade in the soil, and the microplastics formed after fragmentation not only pollute the soil and water environment, but even endanger human health
The plastic film has been mixed in the land for a long time, causing soil compaction and serious soil erosion. In this case, even if fertilizer is applied, the fertilizer effect cannot be well exerted, and the crop yield shows a downward trend.

Method used

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  • A liquid fully degradable mulch film and its preparation method
  • A liquid fully degradable mulch film and its preparation method

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preparation example Construction

[0037] The present invention also provides a preparation method of the liquid fully degradable mulch film, comprising the following steps:

[0038] (1) Fermenting, drying and refining after mixing corn stalks and fermentation bacteria to obtain organic materials;

[0039] (2) mixing carboxymethyl cellulose, silica sol, surfactant and water to obtain a mixed solution;

[0040] (3) Mix organic material, mixed solution, lignin sulfonate and plant extract to obtain the liquid fully degradable mulch film.

[0041] In the present invention, the fermentation temperature in the step (1) is preferably 70-80°C, more preferably 72-78°C, more preferably 74-76°C; the fermentation time is preferably 15-25 days, More preferably, it is 16 to 24 days, and more preferably, it is 18 to 22 days.

[0042] In the present invention, the drying temperature is preferably 50-60°C, more preferably 52-58°C, more preferably 54-56°C; the finer particle size is preferably 300-400nm, more preferably 320nm ...

Embodiment 1

[0049] Configure liquid fully degradable mulch film raw materials according to the following standards:

[0050]70 parts of corn stalks, 4 parts of yeast, 20 parts of carboxymethyl cellulose, 10 parts of silica sol, 35 parts of calcium lignosulfonate, 20 parts of Tween 60, 12 parts of plant extracts, and 250 parts of water.

[0051] The mass concentration of the silica sol is 35 wt %, and the mass ratio of eugenol, picralin and azadirachtin in the plant extract is 1:0.5:0.25.

[0052] Prepare the liquid fully degradable mulch film according to the following method:

[0053] Mix corn stalks and yeasts and ferment at 75°C for 20 days. After the fermentation, dry at 60°C until the water content is 8%, and then refine them. The particle size after refinement is 320nm to obtain organic materials;

[0054] Carboxymethyl cellulose, silica sol, Tween 60 and water were stirred at 800 rpm for 60 min to obtain a mixed solution;

[0055] Stir the organic material, mixed solution, calciu...

Embodiment 2

[0058] Configure liquid fully degradable mulch film raw materials according to the following standards:

[0059] 60 parts of corn stalks, 3 parts of lactic acid bacteria, 25 parts of carboxymethyl cellulose, 8 parts of silica sol, 32 parts of sodium lignosulfonate, 15 parts of Span 20, 5 parts of plant extracts, 200 parts of water.

[0060] The mass concentration of the silica sol is 30 wt %, and the mass ratio of eugenol, picralin and azadirachtin in the plant extract is 1:0.45:0.28.

[0061] Prepare the liquid fully degradable mulch film according to the following method:

[0062] Mix corn stalks and lactic acid bacteria and ferment at 80°C for 15 days. After the fermentation, dry at 50°C until the water content is 7%, and then refine them. The particle size after refinement is 350nm to obtain organic materials;

[0063] Stir carboxymethyl cellulose, silica sol, Span 20 and water at 900 rpm for 50 min to obtain a mixed solution;

[0064] Stir the organic material, mixed so...

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Abstract

The invention belongs to the technical field of agricultural production. The invention provides a liquid fully degradable mulch film, which comprises corn stalks, fermentation bacteria, carboxymethyl cellulose, silica sol, lignosulfonate, surfactant, plant extract and water. The liquid fully degradable mulch film provided by this application is fermented after mixing corn stalks and fermentation bacteria, and then refined and dried to obtain organic materials, so that the degraded mulch film has the effect of fertilizing, and can well retain water and maintain the environment stability; adding carboxymethyl cellulose, silica sol and lignosulfonate to the liquid fully degradable mulch can form a good film after spraying and ensure the covering time of the mulch. The mulch film provided by this application has environmentally friendly and degradable raw materials. While alleviating soil compaction and providing nutrients, it can also degrade by itself. It is harmless to the environment and can be used in combination with herbicides. sustainable development.

Description

technical field [0001] The invention relates to the technical field of agricultural production, in particular to a liquid fully degradable mulch film and a preparation method thereof. Background technique [0002] "Food is paramount to the people", which expresses the relationship between people and food. Food self-sufficiency is the foundation of an international sustainable development. In order to increase food production, agricultural plastic film is a good choice, but plastic film is difficult to degrade in the soil, and the microplastics formed after fragmentation not only pollute the soil and water environment, but even endanger human health. The plastic film has been mixed in the land for a long time, causing soil compaction and serious soil erosion. In this case, even if fertilizer is applied, the fertilizer effect cannot be well exerted, and the crop yield shows a downward trend. Contents of the invention [0003] The purpose of the present invention is to overc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D197/02C09D101/28C09D197/00C09D7/61C09D7/65C09D5/14C05G3/00C05G3/40C05G3/50C05G3/60C05G3/70C05G3/80C05G5/16
CPCC09D197/02C09D7/61C09D7/65C09D5/14C05G3/00C05G3/40C05G3/50C05G3/60C05G3/70C05G3/80C05G5/16C05F11/00C08L2201/06C08L1/286C08L97/005C08K3/36C08K5/13C08K5/1535C05F17/20
Inventor 冯良山杨宁刘春峰邵敏刘国惠刘国为王英丹杜晓宁王丽李婷婷冯晨李颖向午燕赵凤艳
Owner LIAONING SHUNYI AGRI TECH CO LTD
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