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Corn field special-purpose degradable environmental protection mulch film, and preparation method thereof

A technology of corn field and plastic film, which is applied in botany equipment and methods, applications, plant protection, etc., can solve the problems of difficult control of degradation time, increase of corn planting cost, and difficult farmers' wide acceptance, so as to improve mechanical properties and degradation performance , Particle size reduction, apparent viscosity reduction effect

Inactive Publication Date: 2019-01-11
袁志平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after using conventional plastic film covering, manual costs are required to remove the film, which increases the cost of corn planting, and at the same time causes residues of plastic film, resulting in white pollution
The existing degradable mulch films mainly include biodegradable mulch films, photodegradable mulch films, and photogenerated double-degradable mulch films. The existing problems mainly include high cost, incomplete degradation, and difficulty in controlling the degradation time.
Therefore, the existing degradable plastic film products generally have defects and are difficult to be widely accepted by farmers.

Method used

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  • Corn field special-purpose degradable environmental protection mulch film, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A special degradable environmental protection mulch film for corn fields, comprising the following raw materials in weight fractions:

[0026] 90 parts of linear low-density polyethylene; 10 parts of low-density polyethylene; 40 parts of modified tapioca starch; 7 parts of modified nano-calcium carbonate; 5 parts of bagasse powder; 2 parts of polyvinyl alcohol; 0.08 parts of photosensitizer iron stearate ; 0.05 part of phosphite type antioxidant; 0.3 part of thermal degradation accelerator cobalt stearate powder; 1 part of compatibilizer acrylic acid modified polylactic acid oligomer; 2 parts of plasticizer ethylene glycol; wherein bagasse powder The fineness is above 1000 mesh;

[0027] The preparation method of the modified tapioca starch is as follows: (1) drying the tapioca starch at 100° C. for 3 hours to obtain dried tapioca starch, then putting the tapioca starch into an ultrasonic oscillator and vibrating ultrasonically at 80 MHz for 3 hours, Obtain micronized ...

Embodiment 2

[0033] A special degradable environmental protection mulch film for corn fields, comprising the following raw materials in weight fractions:

[0034] 95 parts of linear low-density polyethylene; 13 parts of low-density polyethylene; 45 parts of modified tapioca starch; 10 parts of modified nano-calcium carbonate; 8 parts of bagasse powder; 2.5 parts of polyvinyl alcohol; 0.12 parts of photosensitizer iron stearate 0.08 part of phosphite type antioxidant; 0.4 part of thermal degradation accelerator iron laurate; 2 parts of compatibilizer monomer fatty acid glyceride; 4 parts of plasticizer propylene glycol; The fineness of described bagasse powder is at 1000 above the order;

[0035] The preparation method of the modified tapioca starch is as follows: (1) drying the tapioca starch at 110° C. for 2.5 hours to obtain dried tapioca starch, then putting the tapioca starch into an ultrasonic oscillator and vibrating ultrasonically at 85 MHz for 2.5 hours, Obtain micronized tapioca ...

Embodiment 3

[0040] A special degradable environmental protection mulch film for corn fields, comprising the following raw materials in weight fractions:

[0041] 100 parts of linear low-density polyethylene; 15 parts of low-density polyethylene; 50 parts of modified tapioca starch; 12 parts of modified nano-calcium carbonate; 10 parts of bagasse powder; 3 parts of polyvinyl alcohol; 0.2 parts of photosensitizer iron stearate 0.1 part of phosphite type antioxidant; 0.5 part of thermal degradation accelerator cobalt stearate powder; 3 parts of compatibilizer acrylic acid modified polylactic acid oligomer and 5 parts of plasticizer glycerol; described sugarcane The fineness of slag powder is above 1000 mesh;

[0042] The preparation method of the modified tapioca starch is as follows: (1) drying the tapioca starch at 120° C. for 2 hours to obtain dried tapioca starch, and then putting the tapioca starch into an ultrasonic oscillator and ultrasonically vibrating at 90 MHz for 2 hours, Obtain...

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Abstract

The invention belongs to the technical field of agricultural plastic mulching film, and more specifically relates to a corn field special-purpose degradable environmental protection mulch film, and apreparation method thereof. The corn field special-purpose degradable environmental protection mulch film comprises, by weight, 90 to 100 parts of linear low density polyethylene, 10 to 15 parts of low density polyethylene, 40 to 50 parts of modified cassava starch, 7 to 12 parts of modified nanometer calcium carbonate, 5 to 10 parts of bagasse powder, 2 to 3 parts of polyvinyl alcohol, 0.08 to 0.2 part of photosensitizer iron stearate, 0.05 to 0.1 part of a phosphite ester type anti-oxidant, 0.3 to 0.5 part of a thermal degradation promoter, 1 to 3 parts of a compatibilizer, and 2 to 5 partsof a plasticizer. The corn field special-purpose degradable environmental protection mulch film is invented based on corn growth rules and light illumination and temperature climate factors; photosensitizer iron stearate, the phosphite ester type anti-oxidant, and the thermal degradation promoter are introduced, so that problems in the prior art that degradation of mulch film in soil is difficultto realize, and degradation induction period is difficult to control are solved; the obtained corn field special-purpose degradable environmental protection mulch film is easily degradable, is green,is friendly to the environment; no white pollution is caused; and field pollution is reduced.

Description

technical field [0001] The invention belongs to the technical field of agricultural plastic film preparation, and in particular relates to a special degradable environmental protection plastic film for corn fields and a preparation method thereof. Background technique [0002] my country is a large agricultural country with a large population. Agricultural issues are important strategic issues related to the national economy and people's livelihood. Agricultural film is one of the important material materials for agricultural production. Agricultural film is a general term for plastic films used in agricultural production. It plays a very important role in moisturizing and heat preservation during the sowing period. In agricultural production, mulching with agricultural film not only has the functions of preserving fertilizer, preventing insects and weeds, but also can maintain soil moisture, improve water use efficiency, improve the growth environment of crops, increase cro...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L23/06C08L3/04C08L97/02C08K9/04C08K3/26C08K5/098C08K5/524C08K13/06C08J5/18A01G13/02
CPCA01G13/0275C08J5/18C08J2323/08C08J2403/04C08J2423/06C08K5/098C08K5/524C08K9/04C08K13/06C08K2003/265C08K2201/011
Inventor 袁志平席小兵张惠柳
Owner 袁志平
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