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Degradable compound fertilizer slow-release plastic mulching film and preparation method thereof

A plastic mulch and compound fertilizer technology, applied in the field of plastics, can solve problems such as overuse, pollution, and non-degradable plastic mulch, and achieve the effects of solving fertilizer abuse, simple production process, and long slow-release period

Inactive Publication Date: 2018-07-27
合肥善腾塑料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a degradable compound fertilizer slow-release plastic mulch and its preparation method, which solves the problem that the plastic mulch cannot be degraded and causes pollution in the market, and at the same time can slow-release the compound fertilizer to avoid excessive fertilizer use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A degradable composite fertilizer slow-release plastic mulch film and a preparation method thereof, comprising the steps of:

[0026] (1) Add 6 parts of compound fertilizer into the reaction kettle, add ethanol and stir until completely dissolved, add 6 parts of nano-calcium carbonate, stir evenly, and continue stirring for 6 hours at 40°C. Filter, vacuum overnight at 40°C, and dry to fine particles.

[0027] (2) Put the above particles into a blender, add 50 parts of ethanol, stir, then add 10 parts of β-cyclodextrin, stir for 24 hours, filter, dry in the air, vacuum overnight at 50°C, and prepare slow-release compound fertilizer after drying particle.

[0028] (3) Add 70 parts of polylactic acid, 20 parts of polyvinyl alcohol, 0.5 parts of paraffin, 2 parts of phthalates, and 40 parts of deionized water into the reaction kettle, and stir evenly at 60°C;

[0029] (4) Add compound fertilizer slow-release particles and mix evenly to obtain mother liquor;

[0030] (5) ...

Embodiment 2

[0032] A degradable composite fertilizer slow-release plastic mulch film and a preparation method thereof, comprising the steps of:

[0033] (1) Add 8 parts of compound fertilizer into the reaction kettle, add ethanol and stir until completely dissolved, add 8 parts of nano-calcium carbonate, stir evenly, and continue stirring for 6 hours at 40°C. Filter, vacuum overnight at 40°C, and dry to fine particles.

[0034] (2) Put the above particles into a blender, add 50 parts of ethanol, stir, then add 13 parts of β-cyclodextrin, stir for 24 hours, filter, dry in the air, vacuum overnight at 50°C, and prepare slow-release compound fertilizer after drying particle.

[0035] (3) Add 80 parts of polylactic acid, 30 parts of polyvinyl alcohol, 0.8 parts of paraffin, 3 parts of phthalates, and 50 parts of deionized water into the reaction kettle, and stir evenly at 70 °C;

[0036] (4) Add compound fertilizer slow-release particles and mix evenly to obtain mother liquor;

[0037] (5)...

Embodiment 3

[0039] A degradable composite fertilizer slow-release plastic mulch film and a preparation method thereof, comprising the steps of:

[0040] (1) Add 10 parts of compound fertilizer into the reaction kettle, add ethanol and stir until completely dissolved, add 10 parts of nano-calcium carbonate, stir evenly, and continue stirring for 6 hours at 40°C. Filter, vacuum overnight at 40°C, and dry to fine particles.

[0041] (2) Add the above particles into the mixer, add 50 parts of ethanol, stir, then add 15 parts of β-cyclodextrin, stir for 24 hours, filter, dry in the air, vacuum overnight at 50°C, and prepare slow-release compound fertilizer after drying particle.

[0042] (3) Add 100 parts of polylactic acid, 40 parts of polyvinyl alcohol, 1 part of paraffin, 5 parts of phthalate, and 70 parts of deionized water into the reaction kettle, and stir evenly at 90 °C;

[0043] (4) Add compound fertilizer slow-release particles and mix evenly to obtain mother liquor;

[0044] (5) ...

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PUM

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Abstract

The invention discloses a degradable compound fertilizer slow-release plastic mulching film and a preparation method thereof. The preparation method for the mulching film comprises the following steps: preparing compound fertilizer slow-release microparticles from 6 to 10 parts of a compound fertilizer, 6 to 10 parts of nanometer calcium carbonate and 10 to 15 parts of beta-cyclodextrin; adding 70-100 parts of polylactic acid, 20-40 parts of polyvinyl alcohol, 0.5-1 part of a lubricant, 2-5 parts of a plasticizer and 40-70 parts of deionized water into a reaction kettle and carrying out uniform mixing under stirring at a certain temperature; then adding the compound fertilizer slow-release microparticles and carrying out uniform mixing to obtain mother liquid; and carrying out casting to form the film. The plastic mulching film prepared in the invention contains the compound fertilizer slow-release microparticles, so the compound fertilizer is released in the use of the film and is long in a slow release period; the plastic mulching film is degradable and does not cause pollution; and the preparation method is simple in production process and suitable for industrial production.

Description

technical field [0001] The invention relates to the technical field of plastics, in particular to a degradable compound fertilizer slow-release plastic mulch film and a preparation method thereof. Background technique [0002] The use of chemical fertilizers is one of the indispensable and important measures to increase production and economic benefits in current agricultural production. However, the abuse of chemical fertilizers is not only harmful to the growth and development of crops, but also causes serious environmental pollution. Plastic mulch has the function of heat preservation and moisturizing, which can reduce the loss of water and nutrients, prevent the growth of weeds, and provide a favorable ecological environment for crop growth. Therefore, it is also an important means of production in contemporary agricultural production. However, a large number of non-degradable plastic mulches cause "white pollution", which is not conducive to sustainable ecological devel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L29/04C08L91/06C08K5/12C08J5/18C05G3/00
CPCC05D3/02C05G3/00C05G5/45C08J5/18C08J2367/04C08J2429/04C08J2491/06C08K5/12C05G1/00
Inventor 董如兵
Owner 合肥善腾塑料科技有限公司
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