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Parcel type heat resistant slow release ammonium carbonate and its preparation method

A wrapped type, ammonium bicarbonate technology, applied in ammonium salt fertilizer, nitrogen fertilizer, fertilizer mixture, etc., to reduce pollution, avoid burning seedlings or loss with water, and broaden the application field

Inactive Publication Date: 2004-12-22
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a packaged heat-resistant slow-release ammonium bicarbonate and its preparation method in view of the practical problems existing in the current ammonium bicarbonate fertilizer and its preparation method

Method used

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  • Parcel type heat resistant slow release ammonium carbonate and its preparation method
  • Parcel type heat resistant slow release ammonium carbonate and its preparation method
  • Parcel type heat resistant slow release ammonium carbonate and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Preparation of coating layer mixed solution: Weigh 5 parts of liquid mulch film, 5 parts of epoxy resin and 5 parts of low-temperature curing agent according to 1g each, add an appropriate amount of diluent or co-solvent, and stir evenly at room temperature to obtain the content of the coating layer material Mix solution for 15g of coating layer, set aside. In this embodiment, the epoxy resin is E52, the low-temperature curing agent is T31, and the diluent or co-solvent is chloroform.

Embodiment 2

[0029] Get 85g of sheet-like ammonium bicarbonate (about 0.5 ± 0.1g each weighing about 0.5 ± 0.1g) whose geometrical dimension is 10mm * 4mm by tablet press molding, spray into the coating mixed solution prepared in Example 1 under agitation, while spraying While adding an appropriate amount of talcum powder, after spraying, dry at room temperature for 24 hours, and then place it indoors for at least 24 hours to obtain sample 1 of wrapped heat-resistant slow-release ammonium bicarbonate particles.

[0030] During specific implementation, the ammonium bicarbonate particles can also be granular or spherical or other three-dimensional geometric shapes.

Embodiment 3

[0032] Preparation of the coating mixed solution: Weigh 4 parts of liquid mulch, 4 parts of epoxy resin and 4 parts of low-temperature curing agent according to 1g each, add an appropriate amount of diluent or co-solvent, and stir evenly at room temperature to obtain the content of the coating layer Mix solution for 12g of coating layer, set aside. In this embodiment, the epoxy resin is E52, the low-temperature curing agent is T31, and the diluent or co-solvent is chloroform.

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PUM

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Abstract

A process for preparing the slow-releasing refractory coated ammonium carbonate fertilizer includes proportionally mixing biodegradable liquid-state ground film, epoxy resin, low-temp solidifying agent, auxiliary and organic solvent to obtain coating liquid, adding antisticking agent, coating the ammonium carbonate particles, and drying.

Description

technical field [0001] The invention belongs to the technical field of fertilizers, and relates to an ammonium bicarbonate fertilizer capable of delaying decomposition and release in an aqueous solution and a preparation method thereof, in particular to a packaged heat-resistant slow-release ammonium bicarbonate and a preparation method thereof. Background technique [0002] Ammonium bicarbonate is a better chemical fertilizer variety without harmful side components, suitable for various soils and various crops, and long-term application has no adverse effects on farmland. However, the structure of ammonium bicarbonate is unstable and easily thermally decomposed. This not only causes the utilization rate of ammonium bicarbonate in the application process to be the lowest of all nitrogen fertilizer varieties (in the case of surface application, the average is only 27%), but also causes a large amount of loss in its storage and circulation. The nitrogen loss rate can reach 75...

Claims

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Application Information

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IPC IPC(8): C05C3/00C05G3/00C05G5/00
Inventor 殷以华王治流程镕时
Owner NANJING UNIV
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