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A kind of degradable slow-release multifunctional agricultural film and its preparation method

An agricultural film and multi-functional technology, applied in the field of degradable slow-release multi-functional agricultural film and its preparation, to achieve the effects of performance improvement, excellent slow release, and reduced usage

Active Publication Date: 2019-03-12
四川中科惠泽环保科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the performance of agricultural films in the prior art needs to be further improved in terms of slow release, biodegradability, anti-mildew and anti-bacteria properties, insect resistance, etc., the present invention provides a degradable slow-release multifunctional agricultural film and its preparation method

Method used

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  • A kind of degradable slow-release multifunctional agricultural film and its preparation method
  • A kind of degradable slow-release multifunctional agricultural film and its preparation method
  • A kind of degradable slow-release multifunctional agricultural film and its preparation method

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Effect test

Embodiment 1

[0024] A kind of degradable slow-release multifunctional agricultural film, its preparation method comprises the following steps:

[0025] (1), take by weighing 100 parts of agricultural straw (wheat straw), 27 parts of hydrofluoric acid (mass concentration is 40%), 33 parts of oxalic acid (anhydrous), 0.4 part of ferric fluoride, 85 parts of water, 28 parts of hydrochloric acid ( The mass concentration is 30%), 3 parts of dilute nitric acid (mass concentration is 8%), and 21 parts of ethanol are added in the reactor, the stirring speed is 105r / min, and the reaction is 0.6h under the condition of maintaining the system temperature at 93°C. After 1mol / L Sodium hydroxide solution is neutralized to pH to 7.0, centrifuged in 10000r / min centrifuge for 10min, sediment is washed 3 times through 500mL (each washing consumption, other examples have the same meaning) water, 500mL (each washing consumption, other The meaning of the embodiment is the same) washing with ethanol for 3 times...

Embodiment 2

[0030] A kind of degradable slow-release multifunctional agricultural film, its preparation method comprises the following steps:

[0031](1), weigh 100 parts of agricultural straw (wheat straw), 19 parts of hydrofluoric acid (mass concentration is 40%), 26 parts of oxalic acid, 0.1 part of ferric fluoride, 79 parts of water, 20 parts of 30% (wt.% ) of hydrochloric acid, 1 part of dilute nitric acid (mass concentration is 8%), and 15 parts of ethanol are added in the reactor, and the stirring speed is 90r / min, and the reaction is 0.5h under the condition of maintaining the system temperature at 85°C, and after 1mol / L sodium hydroxide solution Neutralize until the pH reaches 7.0, centrifuge in a centrifuge at 10000r / min for 10min, wash the sediment three times with 500mL of water and three times with 500mL of ethanol, and dry it in vacuum at 65°C and -0.08MPa for 1h to obtain nanocellulose;

[0032] (2), Weigh 100 parts of Abutilon, 18 parts of water, 9 parts of ethanol, 3 part...

Embodiment 3

[0036] A kind of degradable slow-release multifunctional agricultural film, its preparation method comprises the following steps:

[0037] (1), weigh 100 parts of agricultural straw (wheat straw), 38 parts of hydrofluoric acid (mass concentration is 40%), 40 parts of oxalic acid, 0.9 part of ferric fluoride, 115 parts of water, 33 parts of 30% (wt.% ) hydrochloric acid, 9 parts of dilute nitric acid (mass concentration is 8%), and 32 parts of ethanol are added in the reactor, and the stirring speed is 130r / min, and the temperature of the system is maintained at 100°C for 2 hours. and until the pH reaches 7.0, centrifuge in a centrifuge at 10000r / min for 10min, wash the sediment three times with 500mL of water and three times with 500mL of ethanol, and dry it in vacuum at 65°C and -0.08MPa for 1h to obtain nanocellulose;

[0038] (2), Weigh 100 parts of Abutilon, 29 parts of water, 14 parts of ethanol, 9 parts of ethylene glycol, and 16 parts of betaine and add them to the free...

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Abstract

The invention discloses a degradable sustained-release multifunctional agricultural film and a preparation method thereof. The degradable sustained-release multifunctional agricultural film contains the following raw material components in parts by mass: 100 parts of polylactic acid, 25-55 parts of straw powder, 7-16 parts of ginkgo leaf powder, 5-13 parts of tea powder, 6-19 parts of crab shells powder, 3-8 parts of abutilon fiber, 1-4 parts of sodium polyacrylate, 1-7 parts of polyacrylamide, 2-9 parts of nano-crystalline cellulose, 6-10 parts of dioctyl pentaerythritol diphosphite and 4-8 parts of phenyl salicylate. According to the degradable sustained-release multifunctional agricultural film disclosed by the invention, the usage amount of pesticides and chemical fertilizers is effectively reduced, and pollution of the environment, water bodies and foods caused by usage of the chemical fertilizers and pesticides can be avoided; and moreover, the performances such as sustained-release property, biodegradability, mildew-proof and antibacterial property, and insect resistance are obviously improved.

Description

technical field [0001] The invention relates to a degradable slow-release multifunctional agricultural film and a preparation method thereof, belonging to the field of films. Background technique [0002] Agricultural film is an agricultural production product other than seeds, fertilizers, and pesticides. The application of agricultural film has brought a revolution to my country's agricultural production and has made important contributions to the efficiency and income increase of agricultural products. It mainly includes modern agricultural covering materials such as sunshade net, shed film, forage film, mulch film, and insect net. Commonly used agricultural films are polyvinyl chloride film, polyethylene film, polyethylene multifunctional composite film and EVA multifunctional composite film. With the rapid development of agricultural science and technology, the demand for agricultural film will continue to grow. [0003] At present, agricultural films need to be furth...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/04C08L97/02C08L5/08C08L1/02C08L33/02C08L33/26C08K5/524C08K5/134A01G13/02
CPCA01G13/0275C08J5/18C08J2367/04C08J2497/02C08L67/04C08L2201/06C08L2201/08C08L2203/16C08L2205/02C08L2205/035C08L2205/16C08L97/02C08L5/08C08L1/02C08L33/02C08L33/26C08K5/524C08K5/1345
Inventor 李彩虹苏珺余旺旺汪勇张奥涵
Owner 四川中科惠泽环保科技集团有限公司