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Preparation method of high-toughness ageing-resistant agricultural plastic mulching film

An agricultural mulch film and anti-aging technology, which is applied in the direction of botanical equipment and methods, application, climate change adaptation, etc., can solve the problems of easy aging and poor mechanical properties of agricultural mulch film, achieve low porosity, improve aging resistance, and toughness Good results

Inactive Publication Date: 2018-11-13
FOSHAN WANYANG BIOLOGICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention: Aiming at the defects of poor mechanical properties and easy aging of the current agricultural mulch film, a preparation method of high toughness and anti-aging agricultural mulch film is provided

Method used

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  • Preparation method of high-toughness ageing-resistant agricultural plastic mulching film

Examples

Experimental program
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Effect test

example 1

[0024] Weigh 500g of straw and put it into a beaker, soak the straw with a 10% sodium hydroxide solution, put the beaker into a water bath with a water bath temperature of 90°C, and react at a constant temperature for 90 minutes, filter to obtain a filter residue, and put the filter residue in a Dry in an oven at a temperature of 60°C for 2 hours. After drying, use a pulverizer to crush through a 300-mesh sieve to obtain dry fibers. Mix the dry fibers and polyvinyl alcohol at a mass ratio of 1:2 to obtain a suspension, and set aside; bagasse Put the sodium hydroxide solution with a mass fraction of 17% into a beaker at a mass ratio of 1:2, mix and stir at a speed of 200r / min for 120min at room temperature, filter to obtain a filter residue, wash with distilled water and absolute ethanol three times in turn, and Put it in an oven and dry it at 105°C for 50 minutes to prepare the reaction pulp; put the above reaction pulp and 25% sodium hydroxide solution into a flask at a mass r...

example 2

[0026]Weigh 600g of straw and put it into a beaker, soak the straw with 12% sodium hydroxide solution by mass fraction, put the beaker into a water bath with a water bath temperature of 92°C and react at a constant temperature for 95min, filter to obtain a filter residue, put the filter residue in Dry in an oven at a temperature of 62°C for 2.5 hours. After drying, use a pulverizer to crush through a 300-mesh sieve to obtain dry fibers. Mix the dry fibers and polyvinyl alcohol at a mass ratio of 1:2 to obtain a suspension, and set aside; sugarcane The slag and the sodium hydroxide solution with a mass fraction of 18% were put into a beaker at a mass ratio of 1:2, mixed and stirred at a speed of 220r / min for 130min at room temperature, filtered to obtain the filter residue, and washed with distilled water and absolute ethanol four times in sequence. And put it in an oven to dry at 107°C for 55 minutes to prepare the reaction pulp; put the above reaction pulp and 27% sodium hydro...

example 3

[0028] Weigh 700g of straw and put it into a beaker, soak the straw with a 15% sodium hydroxide solution, put the beaker into a water bath with a water bath temperature of 95°C, and react at a constant temperature for 100 minutes, filter to obtain a filter residue, and put the filter residue in Dry in an oven at a temperature of 65°C for 3 hours. After drying, use a pulverizer to crush through a 300-mesh sieve to obtain dry fibers. Mix the dry fibers and polyvinyl alcohol at a mass ratio of 1:2 to prepare a suspension for later use; bagasse Put the sodium hydroxide solution with a mass fraction of 19% into a beaker at a mass ratio of 1:2, mix and stir at a speed of 240r / min for 140min at room temperature, filter to obtain a filter residue, wash it with distilled water and absolute ethanol for 5 times, and Put it in an oven and dry it at 110°C for 60 minutes to prepare the reaction pulp; put the above reaction pulp and 30% sodium hydroxide solution in a mass ratio of 1:10 into a...

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Abstract

The invention relates to a preparation method of high-toughness ageing-resistant agricultural plastic mulching film, and belongs to the technical field of agricultural material preparation. The methodcomprises the steps that bagasse serves as a raw material, a plant fiber in the bagasse is extracted by immersing the bagasse in a sodium hydrate solution repeatedly, and carbon disulfide is used forvulcanizing the plant fiber; the plant fiber extracted from the bagasse is short and thick and has a good mechanical property, the carbon disulfide is used for vulcanizing the plant fiber, and the carbon disulfide and the plant fiber generate sodium cellulose xanghate, so that the distance among cellulose macromolecules is reduced. The preparation method of the high-toughness aging-resistant agricultural plastic mulching film has the advantages that straw serves as the raw material, a straw plant fiber is extracted at high temperature and is combined with polyvinyl alcohol, the straw fiber has abundant cellulose, lignin and hemicellulose, has a tight granular structure and lower porosity, and can improve the mechanical performance of the mulching film; the obtained macromolecular organiccompound has a stable chemical property and excellent ageing-resistant performance, can effectively improve the ageing-resistant performance of the mulching film; the method has a wide application prospect.

Description

technical field [0001] The invention relates to a method for preparing a high-toughness and aging-resistant agricultural mulch film, which belongs to the technical field of agricultural material preparation. Background technique [0002] Mulch film is the ground covering film, usually transparent or black PE film, and there are also green and silver films, which are used for ground covering to increase soil temperature, maintain soil moisture, maintain soil structure, prevent pests from invading crops and diseases caused by certain microorganisms, etc. , the function of promoting plant growth. my country is a big agricultural country, and the use of agricultural mulch products has made great contributions to my country's agricultural production and harvest. Its excellent heat preservation, fertilizer preservation and moisturizing effects have played a decisive role in increasing crop production and income. In recent years, it has been widely promoted and applied in my count...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G13/02C08L97/02C08L3/02C08L29/04C08J5/18
CPCA01G13/0275C08J5/18C08J2397/02C08J2403/02C08J2429/04Y02A40/28
Inventor 刘茂龙蒋梦成朱彩娣
Owner FOSHAN WANYANG BIOLOGICAL TECH CO LTD
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