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Super absorbent resin for vertical greening and preparation method thereof

A super absorbent resin, vertical greening technology, applied in chemical instruments and methods, applications, chemical/physical processes, etc., can solve problems such as water loss, high maintenance costs, and fast bacterial growth, and achieve the effect of improving speed.

Active Publication Date: 2020-07-14
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the cross-linked network structure and hydrogen bonding of the resin itself limit the infinite expansion of the gel.
[0004] Currently, superabsorbent resins are generally not used in the matrix materials used for vertical greening, but the irrigation method is adopted. Since most of the water will be lost during the irrigation process of the vertical facade, it must be watered frequently, and its maintenance cost is high.
At the same time, due to the lack of sunlight on some vertical facades, bacteria grow quickly, which can easily cause plant root rot, and lead to unfavorable plant growth and even plant death.

Method used

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  • Super absorbent resin for vertical greening and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The preparation method of solid acid catalyst: first ZrOCl 2 ·8H 2 Dissolve O in distilled water, slowly add concentrated ammonia water with a concentration of 10mol / L under stirring, adjust the pH value to 9, and form a gel, then age at room temperature until the upper layer solution is clear, filter with suction, and wash until there is no Cl - was detected, and Zr(OH) was obtained 4 , followed by Zr(OH) 4 Dry in an oven at 105°C for 20 hours, grind into a fine powder, pass through a 120-mesh sieve to obtain a solid powder, and then use dilute H with a concentration of 1.0mol / L 2 SO 4 After impregnation, filter with suction, dry the filter cake in an oven at 100°C for 20 hours, and finally roast it at 650°C for 1 hour, grind it into fine powder, and pass it through a 200-mesh sieve to obtain a solid acid catalyst.

Embodiment 2

[0050] The preparation method of solid acid catalyst: first ZrOCl 2 ·8H 2 Dissolve O in distilled water, slowly add concentrated ammonia water with a concentration of 12 mol / L under stirring, adjust the pH value to 9.5, and form a gel, then age at room temperature until the upper layer solution is clear, filter with suction, and wash until there is no Cl - was detected, and Zr(OH) was obtained 4 , followed by Zr(OH) 4 Dry in an oven at 108°C for 22 hours, grind into a fine powder, pass through a 135-mesh sieve to obtain a solid powder, and then use dilute H with a concentration of 1.2mol / L 2 SO 4 After impregnation, filter with suction, dry the filter cake in an oven at 102°C for 22 hours, and finally roast it at 675°C for 2 hours, grind it into fine powder, and pass it through a 225-mesh sieve to obtain a solid acid catalyst.

Embodiment 3

[0052] The preparation method of solid acid catalyst: first ZrOCl 2 ·8H 2 Dissolve O in distilled water, slowly add concentrated ammonia water with a concentration of 13mol / L under stirring, adjust the pH value to 10, and form a gel, then age at room temperature until the upper layer solution is clear, filter with suction, and wash until there is no Cl - was detected, and Zr(OH) was obtained 4 , followed by Zr(OH) 4 Dry in an oven at 110°C for 24 hours, grind into a fine powder, pass through a 150-mesh sieve to obtain a solid powder, and then use dilute H with a concentration of 1.5mol / L 2 SO 4 After impregnation, filter with suction, dry the filter cake in an oven at 105°C for 24 hours, and finally roast it at 700°C for 3 hours, grind it into fine powder, and pass through a 250-mesh sieve to obtain a solid acid catalyst.

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Abstract

The invention relates to super absorbent resin for vertical greening and a preparation method of the super absorbent resin, the whole resin is of a three-dimensional network structure and is composedof a three-dimensional network matrix and slow-release degradable catalyst particles dispersed in the three-dimensional network matrix. A molecular chain of the three-dimensional network matrix is composed of an acrylic acid chain segment, a sodium acrylate chain segment, an acrylic acid-2-ethylhexyl ester chain segment, an acrylamide chain segment, a vinyl benzyl trialkyl quaternary phosphonium salt chain segment and a diacrylamide-terminated polyether type polyurethane chain segment; the slow-release degradation catalyst particles are PBS-coated solid acid catalysts; the preparation method comprises the following steps: preparing; acrylic acid, sodium acrylate, acrylic acid-2-ethylhexyl ester, acrylamide and vinyl benzyl trialkyl phosphonium salt are used as reaction monomers; the superabsorbent resin for vertical greening is prepared by taking diacrylamide-terminated polyether polyurethane as a cross-linking agent and taking slow-release degradable catalyst particles as an additiveand carrying out polymerization reaction under the action of an initiator.

Description

technical field [0001] The invention relates to a method for preparing a superabsorbent resin for vertical greening, and belongs to the technical field of functional polymer material synthesis. Background technique [0002] Vertical greening is to use the site conditions of the vertical plane to carry out greening on the three-dimensional space of the wall, fence, fence, column and flower stand of the building. The population density of the metropolis is high, the area that can be greened is limited, and the per capita green space occupancy rate is low. To improve the greening level of the metropolis, it is not enough to increase the green area of ​​the land plane alone. Only by making a fuss about three-dimensional greening (vertical greening, roof greening, hanging greening) and other aspects can the green rate of the metropolis be improved. Three-dimensional greening can not only effectively increase the green area of ​​the city, but also has the functions of heat insula...

Claims

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Application Information

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IPC IPC(8): C08F290/06C08F220/06C08F220/56C08F220/18C08F230/02B01J27/053C09K17/42C09K17/52
CPCB01J27/053C08F290/067C09K17/42C09K17/52C08F220/06C08F220/56C08F230/02
Inventor 邹黎明许永静李文刚许溢群邢强冯依呈何钧炜王艳丽
Owner DONGHUA UNIV
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