Biodegradable light-weight base soil and preparation method thereof

A biodegradable and light-weight technology, applied in fertilizer mixtures, organic fertilizers, fertilization devices, etc., can solve problems such as easy pollution, poor water retention effect, and inconformity with the concept of green environmental protection, and achieve easy control of the production process and excellent toughness and compatibility, light weight effect

Inactive Publication Date: 2020-08-18
长沙华脉新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the culture soil contains two-component hot-melt bonded composite fibers. Although it can be recycled, it is a non-degradable plastic. Discarding it in the environment will easily cause pollution, which does not meet the current concept of green environmental protection.
The existing biochar cotton is a soilless nutritional bowl made of biochar, peat, pearl cotton, imported slow-release fertilizer, high molecular polymer, etc., which can directly replace the base soil and container of potted plants, and has the advantages of cleanliness, sanitation, and high survival rate. High, convenient management, easy to replace, etc., but its water retention effect is not good, and plants must be planted normally under the condition of artificial normal watering and fertilization. It is not suitable for planting green plants in a water-deficient environment, and its composition contains Non-degradable substances, which are easy to cause pollution if discarded in the environment

Method used

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  • Biodegradable light-weight base soil and preparation method thereof
  • Biodegradable light-weight base soil and preparation method thereof
  • Biodegradable light-weight base soil and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0043] Porous composite material among the present invention is made up of biodegradable polymer, polycaprolactone, starch and cellulose, and its preparation method comprises the following steps:

[0044] 1) The plant straw is dried in the sun, crushed, hydrolyzed in 50% sulfuric acid solution for 30 minutes, then neutralized with NaOH solution, washed with distilled water until neutral, and dried to obtain plant cellulose.

[0045] 2) Surface-modified plant cellulose: soak the above-mentioned plant cellulose in 2mol / L NaOH solution and silane impregnating agent, soak for 2-3 hours at 50-70°C, filter and dry to obtain surface-modified fibers element; Wherein, the mass ratio of NaOH solution and silane impregnating agent is 1:(2-3).

[0046] 3) Cellulose / polycaprolactone mixing: Mix the above-mentioned surface-modified cellulose and polycaprolactone evenly, and react at a pressure of 5-8MPa and a temperature of 80-100°C for 1-2h to obtain crosslinking A mixture of cellulose / po...

Embodiment 1

[0050] Embodiment 1: Preparation of biodegradable light base soil A1

[0051] (1) Dry and pulverize the straw to obtain a plant fiber powder with a length of 4 mm, then 30 parts of the plant fiber powder, 20 parts of loess, 15 parts of diatomite, 5 parts of zeolite, 15 parts of attapulgite, and vermiculite 8 parts and 7 parts of the base soil base material of the above-mentioned porous composite material were mixed and stirred evenly.

[0052] (2) Sterilize the soil base material mixed and configured in step (1), heat it at 160-170°C for 5 minutes, and use a molding device to mold the plastic soil into a film to obtain a plastic soil block A1. Then the porosity, water holding capacity, plant growth status, stability of the base soil, pH value and soil particle composition of the plastic base soil block were tested according to the above test method, and the measured test results are shown in Table 2.

Embodiment 2

[0053] Embodiment 2: the preparation of biodegradable light base soil A2

[0054] The preparation method of A2 is the same as that of A1 in Example 1, and the specific steps are with reference to Example 1. It is worth noting that the base soil base material ratio in A2 is 40 parts of plant fiber powder, 15 parts of loess, 10 parts of diatomaceous earth, 5 parts of zeolite, 15 parts of attapulgite, 8 parts of vermiculite, and 7 parts of porous composite material. The test results are shown in Table 2.

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Abstract

The invention discloses biodegradable light-weight base soil and a preparation method thereof, and relates to the field of preparation of nutrient soil. The biodegradable light base soil is prepared from base soil, plant fibers, diatomite, zeolite, attapulgite, vermiculite and a porous composite material. The preparation method includes the following steps: firstly, uniformly stirring and mixing the base soil, the plant fibers, diatomite, the zeolite, the attapulgite, the vermiculite and the porous composite material, then carrying out low-temperature sterilization treatment and heating and pressurizing treatment. The biodegradable light-weight base soil provided by the invention has the characteristics of plasticity, light weight, difficulty in soil scattering and no environmental pollution; the three-dimensional greening planting device is simple in structure and convenient to use, can be used for planting various different plants, has excellent water-retaining property and air permeability so as to satisfy the reusable requirements of the three-dimensional greening industry, and can also satisfy the degradable use requirements of dry soil mechanical planting and desertificationplant planting.

Description

technical field [0001] The invention belongs to the field of preparation of nutrient soil, in particular to a biodegradable light weight plastic nutrient soil. Background technique [0002] Nutrient soil is a bed soil specially formulated to meet the growth and development of seedlings, containing a variety of mineral nutrients, loose and ventilated, strong in water and fertilizer retention, and free from pests and diseases. In order to meet the needs of the growth and development of flower seedlings, according to the different requirements of various varieties of soil, artificially configured soils are rich in nutrients, have good drainage and air permeability, can keep moisture and keep fertilizer, do not crack when dry, and are not sticky when wet. Cultivation soil that does not form skin after watering. With global warming, pollution intensifies, modern people's awareness of environmental protection increases, and then drives the rapid development of landscaping and flo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/80
CPCC05D9/00C05G3/00C05G3/80C05F11/00
Inventor 曾智
Owner 长沙华脉新材料有限公司
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