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Degradable environmental-friendly mulching film and preparation method thereof

A mulching and environmental protection technology, applied in plant protection cover, climate change adaptation, etc., can solve the problems of complex processing, high cost, poor time control of degradation time, etc.

Inactive Publication Date: 2013-11-27
沈婧
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problems of complex processing, high cost and poor time control of degradation time in the existing degradable plastic film, the present invention proposes a degradable environmental protection plastic film and its manufacturing method

Method used

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  • Degradable environmental-friendly mulching film and preparation method thereof
  • Degradable environmental-friendly mulching film and preparation method thereof
  • Degradable environmental-friendly mulching film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Example 1 Preparation of common type environmental protection plastic film

[0052] 1.1 Components and dosage of photothermal biodegradable multi-component composition (percentage by weight)

[0053] TiO 2 30

[0054] Cobalt stearate 40

[0055] Calcium Stearate 3

[0056] Zinc stearate 3

[0057] Antioxidant 246 20

[0058] GW944 1

[0059] N-Lauroyl Glutamic Acid 3

[0060] In the above formula, TiO 2 For the anatase crystal structure, TiO 2 Perform coating. The chemical name of antioxidant 246 is 2,4,6-tri-tert-butylphenol. GW944 is a hindered amine light stabilizer, the chemical name is poly-{[6-[(1,1,3,3-tetramethylbutyl)-imino]-1,3,5-triazine-2,4 -Diyl][2-(2,2,6,6-tetramethyl-4-piperidinyl)-nitrilo]-hexamethylene-[4-(2,2,6,6-tetramethyl Base-4-piperidinyl)-nitrilo]}.

[0061] 1.2 Ordinary degradable masterbatch

[0062] The various components described in 1.1 are weighed according to the weight percentage of each component, an...

Embodiment 2

[0068] Example 2 Preparation of slow-speed environmental protection film

[0069] 2.1 Components and dosage (percentage by weight) of photothermal biodegradable multi-component composition - slow type

[0070] Cerium stearate 50

[0071] Calcium stearate 5

[0072] Zinc stearate 5

[0073] Antioxidant 264 20

[0074] GW944 20

[0075] In the above formula, the chemical name of antioxidant 264 is 2,6-di-tert-butyl-4-methylphenol.

[0076] 2.2 Slow degradable masterbatch

[0077] The various components described in 2.1 are weighed according to the weight percentage of each component, and each component is dried separately, and then put into a shear mixer, and the components are physically fused and chemically reacted by using high shear force. Add the mixed material to low-melting low-density polyethylene (such as ExxonMobil LD654 in the United States, with a melting point of 96) in a proportion of 5%. o In C), add a twin-screw granulator to make a slow degradable mast...

Embodiment 3

[0083] Example 3 Rapid environmental protection film

[0084] 3.1 Components and dosage of photothermal biodegradable multi-component composition (weight percent)

[0085] TiO 2 30

[0086] Cobalt stearate 40

[0087] Antioxidant BHA 10

[0088] N-Lauroyl Glutamic Acid 20

[0089] In the above formula, TiO2 has an anatase crystal structure, and organic matter is used as the coating material of TiO2, such as polyethylene glycol and triethanolamine. The chemical name of the antioxidant BHA is tert-butylhydroxyanisole.

[0090] 3.2 Rapid Degradable Masterbatch

[0091] The various components described in 3.1 are weighed according to the weight percentage of each component, and each component is dried separately, and then put into a shear mixer, and the components are physically fused and chemically reacted by using high shear force. Add the mixed material to low-melting low-density polyethylene (such as Exxon Mobil LD654 in the United States, with a...

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Abstract

The invention relates to an environmental-friendly mulching film which can endow universal plastics with properties of photothermal oxidative degradation and biodegradation. The invention specifically discloses a degradable material which is prepared from photothermal oxidative degradation granules, a thermal stabilizer, a photostabilizer, an antioxidant, a biodegradation guiding agent and the like; and after the degradable material is added to the universal plastics (such as polyethylene, polypropylene, polystyrene and the like), the plastics can be subjected to photothermal oxidative degradation and biodegradation. The environmental-friendly mulching film capable of being subjected to oxidative biodegradation can be produced through preparing a degradable master batch from the degradable material and low-density and low-melting-point polyethylene by a twin-screw granulator and adding the degradable master batch to mulching film production. The degradable environmental-friendly mulching film disclosed by the invention not only has the advantages of simplicity in preparation, low production cost, environmental friendliness and no pollution, but also has very good time controllability; and the degradation time of the mulching film can be changed through adjusting the content of ingredients of the mulching film, so that the requirements of different crops for growth are met, and the mulching film is very applicable to the needs of agricultural planting.

Description

technical field [0001] The invention relates to the technical field of degradable materials, in particular to a degradable environmental protection film and a manufacturing method thereof. Background technique [0002] Film mulching is one of the key technical measures for dry farming, water-saving agriculture and increasing the growth period of crops. Film mulching cultivation technology has effectively improved the scientific and technological level of food production. However, with the increase of plastic film coverage, traditional plastic film is neither degradable nor recyclable, and the problem of residual film pollution is becoming more and more serious. If the film recovery rate is increased only by increasing the thickness of the film, it will not only fail to achieve 100% recycling, but will also increase the burden on farmers and cause waste of materials. Therefore, the research and development of naturally degradable mulch and the return of mulch waste to nature...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/08C08K13/06C08K13/02C08K9/10C08K3/22C08K5/098C08K5/13C08K5/17C08K3/26A01G13/02
CPCY02A40/28
Inventor 陆海荣孙建设燕维福
Owner 沈婧
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