Biodegradable mulching film suitable for long-period growing plants

A biodegradable, long-term technology, applied to plant protection covers, etc., to achieve the effects of increased yield and harvest, simple manufacturing method, and cheap and easy-to-obtain components

Pending Publication Date: 2022-04-29
杭州泽同新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] This invention application has the advantages of being completely degraded into carbon dioxide and water by microorganisms after use, without residue, reducing environmental pollution, and improving the reliability of agricultural sustainable development, but it still does not solve the above problems

Method used

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  • Biodegradable mulching film suitable for long-period growing plants
  • Biodegradable mulching film suitable for long-period growing plants
  • Biodegradable mulching film suitable for long-period growing plants

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] This embodiment provides a biodegradable mulch film suitable for long-term growth plants, including 80 parts by mass of PCL resin, 10 parts of polyvinyl alcohol, 5 parts of plant fiber, 15 parts of calcium carbonate, 0.1 part of Light stabilizer, 0.1 part of antioxidant, 3 parts of modified nano-montmorillonite, 1 part of paraffin and 0.5 part of 2-ethylhexanol acetate.

[0024] Wherein, the light stabilizer is light stabilizer 944; the antioxidant is antioxidant 1010; the plant fiber is bamboo fiber.

[0025] The modified nano-montmorillonite is prepared by the following method: adding nano-montmorillonite to an aqueous solution of sodium hydroxide with a pH value of 8, heating at 80°C for 20 minutes, filtering while hot, drying at 80°C for 30 minutes after filtration, and cooling for 5 minutes after drying to 10°C to obtain modified nano-montmorillonite.

[0026] Light stabilizer 944 is also known as hindered amine light stabilizer HS-944, and its molecular formula i...

Embodiment 2

[0029] This embodiment provides a biodegradable mulch film suitable for long-term growth plants, including 60 parts by mass of PCL resin, 20 parts of polyvinyl alcohol, 10 parts of plant fiber, 25 parts of calcium carbonate, 1 part of Light stabilizer, 1 part of antioxidant, 7 parts of modified nano-montmorillonite, 2 parts of paraffin and 2 parts of 2-ethylhexanol acetate.

[0030] Among them, the light stabilizer is light stabilizer 944; the antioxidant is antioxidant 1010; the plant fiber is a mixture of rice straw and corn stalks at a mass ratio of 1:1.

[0031] The modified nano-montmorillonite was prepared by the following method: adding nano-montmorillonite to an aqueous solution of sodium hydroxide with a pH value of 10, heating at 90°C for 40 minutes, filtering while hot, drying at 100°C for 60 minutes after filtration, and cooling for 3 minutes after drying to 5°C to obtain modified nano-montmorillonite.

Embodiment 3

[0033] This embodiment provides a biodegradable mulch film suitable for long-term growth plants, including 70 parts by mass of PCL resin, 15 parts of polyvinyl alcohol, 8 parts of plant fiber, 20 parts of calcium carbonate, 0.5 parts of Light stabilizer, 0.5 parts of antioxidant, 5 parts of modified nano-montmorillonite, 1.5 parts of paraffin and 1 part of 2-ethylhexanol acetate.

[0034] Wherein, the light stabilizer is light stabilizer 944; the antioxidant is antioxidant 1010; the plant fiber is cotton fiber.

[0035] The modified nano-montmorillonite is prepared by the following method: add the nano-montmorillonite to the sodium hydroxide aqueous solution with a pH value of 9, heat at 85°C for 30 minutes, filter while it is hot, dry at 90°C for 45 minutes after filtration, and cool for 4 minutes after drying to 8°C to obtain modified nano-montmorillonite.

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Abstract

The invention relates to the technical field of composite materials, in particular to a biodegradable mulching film suitable for long-period growing plants. The invention provides a biodegradable mulching film suitable for plants growing in a long period, aiming at the problems that most biodegradable mulching films in the prior art are short in degradation period, the biodegradable mulching films are broken or lose efficacy due to degradation, and adverse effects are caused on growth and harvesting of cotton, and the biodegradable mulching film comprises degradable matrix resin, the composite material further comprises polyvinyl alcohol, plant fibers, calcium carbonate, a light stabilizer, an antioxidant and a degradation control component. The degradation control component is added, so that the degradation speed of the biodegradable mulching film can be effectively delayed, and the yield can be effectively increased when the biodegradable mulching film is applied to plants with a relatively long growth cycle, such as Xinjiang cotton.

Description

technical field [0001] The invention relates to the technical field of degradable materials, in particular to a biodegradable mulch suitable for long-period growing plants. Background technique [0002] Biodegradable mulch refers to a type of plastic mulch that can be degraded by microorganisms under natural environmental conditions. After microorganisms such as bacteria, fungi, and actinomycetes erode plastic films, the polymer components are hydrolyzed, ionized, or protonated due to cell growth, mechanically destroyed, and split into oligomer fragments. Enzymes secreted by fungi or bacteria decompose or oxidatively degrade water-soluble polymers into water-soluble fragments, generate new small molecular compounds, and finally decompose into CO 2 and H 2 O. [0003] Biodegradable mulch film is a new type of ground covering film, which is mainly used for ground covering to increase soil temperature, maintain soil moisture, maintain soil structure, prevent pests from invad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L29/04C08L97/02C08L1/02C08L91/06C08K3/26C08K9/02C08K3/34C08K5/101C08J5/18A01G13/02
CPCC08J5/18A01G13/0275C08J2367/04C08J2429/04C08J2497/02C08J2401/02C08J2491/06C08K2003/265C08K9/02C08K3/346C08K5/101C08K2201/011
Inventor 邢春联屠小明沈俊
Owner 杭州泽同新材料科技有限公司
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