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Preparation method of light artificial soil material for green roof

A kind of artificial soil and light-weight technology, applied in the direction of botany equipment and methods, application, soilless cultivation, etc., can solve the problems of unseen literature reports and applications, and achieve light weight, ensure nutrients and porosity, and low price Effect

Inactive Publication Date: 2013-01-30
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the invention of the roof greening cultivation medium mainly composed of waste polymer foam material and organic polymer water-absorbing resin has not been reported and applied in the literature at home and abroad.

Method used

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  • Preparation method of light artificial soil material for green roof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1) Preparation of acrylic acid-acrylamide composite water-absorbent resin

[0032] a. Take 3 g of NaOH and 9 mL of water to make a NaOH aqueous solution with a concentration of 7.5 mol / L, and then place it in an ice-water bath to cool to 0 °C.

[0033] b. Put a closed container in an ice-water bath, first add 7 g of acrylic acid monomer, and slowly add NaOH aqueous solution dropwise under the condition of stirring to obtain a mixed solution.

[0034] c. Then 2.8 g of acrylamide and 0.02 g of cross-linking agent N,N-dimethylenebisacrylamide were added to the mixed solution, and stirred evenly.

[0035] d. After complete dissolution, nitrogen gas was passed through the container for 10 min to remove oxygen. Then 0.03 g of initiator potassium persulfate was added, stirred vigorously, and reacted at 65 °C for 1 h, and the product was a colorless and transparent elastomer. The product is taken out, dried at a constant temperature, and pulverized to obtain an acrylic ac...

Embodiment 2

[0041] 1) Preparation of acrylic acid-acrylamide composite water-absorbent resin

[0042] a. Take 2.4 g of NaOH and 9 mL of water to make a NaOH aqueous solution with a concentration of 6 mol / L, and then place it in an ice-water bath to cool to 0 °C.

[0043] b. Put a closed container in an ice-water bath, first add 7 g of acrylic acid monomer, and slowly add NaOH aqueous solution dropwise under the condition of stirring to obtain a mixed solution.

[0044] c. Then 1 g of acrylamide and 0.0007 g of cross-linking agent N,N-dimethylenebisacrylamide were added to the mixed solution, and stirred evenly.

[0045] d. After complete dissolution, nitrogen gas was passed through the container for 10 min to remove oxygen. Then 0.007 g of initiator potassium persulfate was added, stirred vigorously, and reacted at 70 °C for 1 h, and the product was a colorless and transparent elastomer. The product is taken out, dried at a constant temperature, and pulverized to obtain an acrylic a...

Embodiment 3

[0051] 1) Preparation of acrylic acid-acrylamide composite water-absorbent resin

[0052] a. Take 1.2 g of NaOH and 9 mL of water to make a NaOH aqueous solution with a concentration of 3 mol / L, and then place it in an ice-water bath to cool to 0 °C.

[0053] b. Put a closed container in an ice-water bath, first add 7 g of acrylic acid monomer, and slowly add NaOH aqueous solution dropwise under the condition of stirring to obtain a mixed solution.

[0054] c. Then 2.1 g of acrylamide and 0.0027 g of crosslinking agent N,N-dimethylenebisacrylamide were added to the mixed solution, and stirred evenly.

[0055] d. After complete dissolution, nitrogen gas was passed through the container for 10 min to remove oxygen. Then 0.018 g of initiator potassium persulfate was added, stirred vigorously, and reacted at 70 °C for 1 h, and the product was a colorless and transparent elastomer. The product is taken out, dried at a constant temperature, and pulverized to obtain an acrylic ...

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Abstract

The invention relates to a preparation method of a light artificial soil material for a green roof. The preparation method comprises the following specific steps of: synthesis of acrylic acid-acrylic amide water-absorption resin by a water solution method; and preparation of light artificial soil, wherein a waste macromolecule foam material and high-water-absorption resin are taken as host materials, the mass ratio of the resin to the foam material is 1:(40-68), and other ground substances, such as attapulgite, activated carbon, a slow release fertilizer and grits, are added into the host materials according to different ratios, thus obtaining the light artificial soil. Compared with the prior art, the light artificial soil material has the advantages of low cost, low carbon, environment protection, long service life, high water content and the like. The light artificial soil material prepared by the method is light in mass, and has wet density of only 588-800 kg / m<3> which is a third to half of the wet density of garden soil and is less than the weight density (of about 900 kg / m<3>) of the conventional invented culture medium, thus meeting the load requirements of more roofs.

Description

technical field [0001] The invention relates to a method for preparing a lightweight artificial soil material used for greening roofs, and prepares a lightweight artificial soil composite material used in greening roofs as a cultivation medium, which belongs to the technical field of functional composite materials. Background technique [0002] Green roofs play an important role in increasing the "greenness" of the city, purifying the air, lowering the temperature, reducing light hazards, and eliminating the heat island effect. The existing roof is usually paved with asphalt, waterproof coating, waterproof membrane and polymer thermal insulation board on the load-bearing layer to play the role of waterproof, thermal insulation, and these polymer materials are affected by factors such as light and heat. It is easy to age and has a short lifespan. However, after the roof is covered with green vegetation, most of the light and heat radiation received by the roof is blocked, ab...

Claims

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Application Information

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IPC IPC(8): A01G31/00C05G3/00C08F220/06C08F220/56C08F222/38
Inventor 贺英施周邱细妹蔡计杰唐先斌潘照东张瑶斐王均安
Owner SHANGHAI UNIV
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