Full-degradation deworming mulching film and preparation method thereof

A fully degradable and mulching technology, applied in animal repellants, animal husbandry, applications, etc., can solve problems such as inability to absorb and utilize crops, crop production reduction agricultural operations, and harvest decline, so as to maintain full biodegradability and reduce harm to humans. Threat, effect of reducing material cost

Inactive Publication Date: 2013-02-20
WUHAN HUALI BIOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] While plastic film mulching technology has brought huge benefits to my country's agricultural production increase, it has also brought serious pollution to the soil, and there is a potential danger of white pollution.
Since most of the mulch films currently used are polyethylene or polyvinyl chloride mulch films, the stability of this type of mulch film is extremely high, and the fragments left in the soil cannot be degraded by soil microorganisms, nor can they be absorbed and utilized by crops.
A large number of plastic film residues have brought serious negative impacts on the ecological environment of farmland and agricultural production, causing a series of problems such as soil structure d

Method used

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  • Full-degradation deworming mulching film and preparation method thereof
  • Full-degradation deworming mulching film and preparation method thereof
  • Full-degradation deworming mulching film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The diatomite powder was completely soaked in peppermint oil, ultrasonically oscillated for 4 hours, suction filtered, and dried to obtain diatomite powder loaded with peppermint oil. Disperse the powder in a glycerol solution of polyvinyl alcohol, spray the mixture into an inert hot air current to make the droplets shrink into a spherical shape, and then dry to obtain peppermint oil microcapsules.

[0044] 40 parts by mass of PBAT, 20 parts by mass of polylactic acid, 20 parts by mass of cornstarch, 5 parts by mass of glycerin, 2 parts by mass of BASF chain extender JONCRYL ADR-4368, 5 parts by mass of peppermint oil microcapsules and 8 parts by mass of light Calcium carbonate is mixed evenly in a high-speed mixer, and then the mixture is mixed in a twin-screw extruder, and the temperature of each section of the twin-screw extruder is set to T 1 =140°C, T 2 =150℃, T 3 =150℃, T 4 =155℃, T 5 =155℃, T 6 =155°C, the speed of the twin-screw extruder is R=300r·min -1; ...

Embodiment 2

[0049] The diatomite powder was completely soaked in cinnamon oil, ultrasonically oscillated for 6 hours, filtered and dried to obtain diatomite powder loaded with cinnamon oil. Disperse the powder in a glycerol solution of polyvinyl alcohol, spray the mixture into an inert hot air stream to make the droplets shrink into a spherical shape, and then dry to obtain cinnamon oil microcapsules.

[0050] Mix 30 parts by mass of PBAT, 30 parts by mass of polylactic acid, 10 parts by mass of tapioca starch, 5 parts by mass of ethylene glycol, 20 parts by mass of cinnamon oil microcapsules and 5 parts by mass of talc in a high-speed mixer, and then mix the mixture in Mixing in the twin-screw extruder, the temperature of each section of the twin-screw extruder is set to T 1 =155℃, T 2 =160°C, T 3 =165°C, T 4 =165°C, T 5 =160°C, T 6 =165°C, the speed of the twin-screw extruder is R=300r·min -1 ; Afterwards, extrude, cool, and granulate to obtain materials for fully degradable insec...

Embodiment 3

[0055] Diatomaceous earth powder was completely soaked in Artemisia chrysanthemum oil, ultrasonically oscillated for 8 hours, filtered, and dried to obtain diatomite powder loaded with Artemisia chrysanthemum oil. Then disperse the powder in the glycerin solution of polyvinyl alcohol, and then spray the mixture into an inert hot air flow to make the droplets shrink into a spherical shape, and then dry them to obtain Artemisia chrysanthemum oil microcapsules.

[0056] Mix 60 parts by mass of poly PBAT, 10 parts by mass of polylactic acid, 10 parts by mass of cornstarch, 5 parts by mass of propylene glycol, 10 parts by mass of Artemisia chrysanthemum oil microcapsules and 5 parts by mass of light calcium carbonate in a high-speed mixer, and then The mixture is mixed in the twin-screw extruder, and the temperature of each section of the twin-screw extruder is set to T 1 =145°C, T 2 =155℃, T 3 =160°C, T 4 =160°C, T 5 =165°C, T 6 =165°C, the speed of the twin-screw extruder is...

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Abstract

The invention relates to a full-degradation deworming mulching film and a preparation method thereof. The full-degradation deworming mulching film comprises as follows in parts by mass: PBAT 30-60%, polylactic acid 10-30%, starch 10-30%, plasticizer 5-10%, chain extender 0-2%, filler 5-10%, plant source pesticide-sustained-release microcapsule 5-20% and full-degradation color master batch 0-5%. The preparation method comprises the steps of firstly absorbing plant source pesticide on diatomaceous earth, then processing with polyvinyl alcohol according to specific technology to obtain the plant source pesticide-sustained-release microcapsule, and then manufacturing materials for the full-degradation deworming mulching film with the PBAT, starch, polylactic acid, plasticizer, chain extender and the filler according to a specific production technology. The biological full-degradation mulching film has deworming effect, has important significance on crop pesticide residue reduction and environment protection, and meets the requirement of sustainable development.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a fully degradable insect-repelling mulch film and a preparation method thereof. Background technique [0002] Plastic film is one of the important means of production in agricultural production. It can not only improve ground temperature, water conservation, soil conservation, fertilizer conservation and fertilizer efficiency, but also can kill weeds, prevent diseases and insect pests, prevent drought and waterlogging, suppress salt and protect seedlings, and improve near-ground light. thermal conditions, make the product hygienic and clean and many other functions. [0003] As a large agricultural country, my country has a vast territory and great climate differences across regions. Therefore, the application and development of mulch film has been very rapid in the past 30 years. It is the country with the largest consumption of mulch film, the largest cov...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L67/04C08L3/02C08K13/06C08K9/12C08K9/10C08K3/34C08K3/26C08K3/22C08K5/053C08K5/17A01G13/02A01M29/12
CPCY02A40/28
Inventor 危伟张立斌金国轴盖付亮王淑敏
Owner WUHAN HUALI BIOLOGY CO LTD
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