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Preparation method and application of guar-gum-containing coating material

A technology of wrapping materials and guar gum, which is applied in the direction of application, layered/coated fertilizers, fertilizer mixtures, etc., can solve the problems of low fertilizer utilization efficiency and poor controlled release effect of fertilizers, and is conducive to popularization and application and health promotion The effect of moderate growth and controlled release rate of fertilizer

Inactive Publication Date: 2016-04-20
张莘蔓
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a preparation method of a wrapping material containing guar gum and its application to solve the problems of poor fertilizer controlled release effect and low fertilizer utilization efficiency

Method used

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  • Preparation method and application of guar-gum-containing coating material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A preparation method for a wrapping material comprising guar gum, comprising the following steps:

[0025] S1: Warm up the guar gum with 40 parts by weight to 63° C., adjust the pH value of the guar gum to 11.3, and prepare guar gum A;

[0026] S2: Adding 4 parts by weight of polyaluminum sulfate and 1 part of magnesium oxide to the guar gum A prepared in step S1, reacted for 90 minutes at 300 r / min, and added 2 parts by weight of potassium hypochlorite, 1 part after the temperature was raised to 70 ° C. 1 part of glutaraldehyde, reacted at 400r / min for 60min, cooled to 55°C, and added parts by weight of 1 part of zinc sulfate, 1 part of potassium polyacrylate, and 1 part of humic acid, and reacted at 200r / min for 80min to obtain guar Glue B;

[0027] S3: Add 8 parts of diatomite, 8 parts of kaolin, 6 parts of peat, 2 parts of ammonium tripolyphosphate powder, 2 parts of ammonium nitrate powder, and 200 parts of water to the guar gum B prepared in step S2 and mix evenl...

Embodiment 2

[0029] A preparation method for a wrapping material comprising guar gum, comprising the following steps:

[0030] S1: Warming up 60 parts by weight of guar gum to a temperature of 64° C., adjusting the pH value of the guar gum to 11.5 to obtain guar gum A;

[0031] S2: Add 6 parts by weight of polyaluminum sulfate and 2 parts of magnesium oxide to the guar gum A prepared in step S1, react for 70 minutes at 400 r / min, and add 3 parts by weight of potassium hypochlorite, 2 parts after the temperature is raised to 72 ° C. Parts of glutaraldehyde, reacted at 500r / min for 50min, cooled to 60°C, added parts by weight of 2 parts of zinc sulfate, 1.5 parts of potassium polyacrylate, and 1.5 parts of humic acid, and reacted at 300r / min for 70min to obtain guar Glue B;

[0032] S3: Add 12 parts of diatomite, 12 parts of kaolin, 10 parts of peat, 6 parts of ammonium tripolyphosphate powder, 6 parts of ammonium nitrate powder, and 600 parts of water to the guar gum B prepared in step S2 ...

Embodiment 3

[0034] A preparation method for a wrapping material comprising guar gum, comprising the following steps:

[0035] S1: Warm up 50 parts by weight of guar gum to a temperature of 64° C., adjust the pH value of the guar gum to 11.4, and obtain guar gum A;

[0036] S2: Add 5 parts by weight of polyaluminum sulfate and 2 parts of magnesium oxide to the guar gum A prepared in step S1, react at 350r / min for 80min, and add 3 parts by weight of potassium hypochlorite, 2 parts after the temperature is raised to 72°C. Parts of glutaraldehyde, reacted at 450r / min for 55min, cooled to 58°C, added parts by weight of 2 parts of zinc sulfate, 1.5 parts of potassium polyacrylate, and 1.5 parts of humic acid, and reacted at 250r / min for 75min to obtain guar Glue B;

[0037] S3: Add 10 parts of diatomite, 10 parts of kaolin, 8 parts of peat, 4 parts of ammonium tripolyphosphate powder, 4 parts of ammonium nitrate powder, and 400 parts of water to the guar gum B prepared in step S2 and mix evenl...

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Abstract

The invention discloses a preparation method and an application of a guar-gum-containing coating material and belongs to the technical field of preparation of controlled release fertilizer. The guar-gum-containing coating material is prepared through steps of temperature and pH regulation of guar gum, reaction with a moisture-proof agent, an oxidizing agent, a coupling agent and the like, mixing, drying and the like. The guar-gum-containing coating material has the advantages that the controlled release rate of fertilizer can be moderate and stable, the fertilizer loss rate can be reduced effectively, the utilization efficiency of the fertilizer can be improved, healthy growth of plants can be promoted, and yield can be increased; the preparation method of the guar-gum-containing coating material is simple to operate and facilitates popularization and application.

Description

【Technical field】 [0001] The invention belongs to the technical field of preparation of controlled-release fertilizers, and in particular relates to a preparation method and application of a wrapping material containing guar gum for controlled-release fertilizers. 【Background technique】 [0002] In the rainy season, on the one hand, it is not convenient for fertilization work, and on the other hand, the fertilizer applied is easy to be lost with frequent rainfall, which affects the efficiency of fertilization. Soluble inorganic fertilizers will dissolve at a faster speed, resulting in fertilizer waste. It has caused eutrophication pollution of water bodies, which greatly restricts the promotion and use of fertilizers in our country. [0003] For this reason, someone prepares slow release (controlled release) fertilizer by increasing the mode of coating on the fertilizer surface. For example, the patent document (patent number: ZL201120068726.0) discloses a slow-release comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/08C05G3/90
CPCC05G3/90C05G5/30
Inventor 张莘蔓
Owner 张莘蔓
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