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Preparation method and application of novel coating material

A wrapping material and a new type of technology are applied in the field of preparation of new fertilizer controlled release wrapping materials, which can solve the problems of poor fertilizer controlled release effect and low fertilizer utilization efficiency, and achieve the effects of improving utilization efficiency, promoting healthy growth of plants and increasing yield.

Inactive Publication Date: 2016-05-11
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 and application of a new type of wrapping material 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 novel coating material

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Experimental program
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Effect test

Embodiment 1

[0024] A preparation method of a novel wrapping material includes the following steps:

[0025] S1: heating 40 parts by weight of guar gum to 62° C., adjusting the pH of the guar gum to 11.2, to obtain guar gum A;

[0026] S2: Add 4 parts by weight of polyaluminum sulfate and 1 part of magnesium oxide to the guar gum A prepared in step S1, react at 300r / min for 80 minutes, and then add 2 parts by weight of calcium hypochlorite after heating to 70°C , 1 part of furfural, react at 400r / min for 50min, add 1 part by weight of zinc sulfate, 1 part of polyacrylamide, 1 part of borax after cooling to 55°C, react at 200r / min for 70min to prepare guar gum B;

[0027] S3: Add 8 parts by weight of diatomaceous earth, 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 vegetable gum B prepared in step S2 and mix it evenly. Dry it at 63°C to a moisture content of 22%, and a new type of wrapping materi...

Embodiment 2

[0029] A preparation method of a novel wrapping material includes the following steps:

[0030] S1: heating 60 parts by weight of guar gum to 63° C., adjusting the pH of the guar gum to 11.4, 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 at 400r / min for 60 minutes, and add 3 parts by weight of calcium hypochlorite after heating to 72°C , 2 parts of furfural, react at 500r / min for 40min, add 2 parts by weight of zinc sulfate, 1.5 parts of polyacrylamide, 1.5 parts of borax after cooling to 60℃, and react at 300r / min for 60min to prepare guar gum B;

[0032] S3: Add 12 parts by weight of diatomaceous earth, 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 by weight to the vegetable gum B prepared in step S2 and mix it evenly. Dried at 65°C to a moisture content of 24%, a new type of ...

Embodiment 3

[0034] A preparation method of a novel wrapping material includes the following steps:

[0035] S1: Heat 50 parts by weight of guar gum to 63° C., adjust the pH of guar gum to 11.3, and prepare 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 70 minutes, and add 3 parts by weight of calcium hypochlorite after heating to 72°C , 2 parts of furfural, react at 450r / min for 45min, after cooling to 58℃, add 12 parts by weight of zinc sulfate, 1.5 parts of polyacrylamide, 1.5 parts of borax, react at 250r / min for 65min to prepare guar gum B;

[0037] S3: Add 10 parts by weight of diatomaceous earth, 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 by weight to the vegetable gum B prepared in step S2 and mix it evenly. Dry it at 64°C to a moisture content of 23%, and a new type of wrappi...

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Abstract

The invention discloses a preparation method and application of a novel coating material, and belongs to the technical field of controlled-release fertilizer preparation. The novel coating material is prepared through the steps of regulating the temperature and pH value of guar gum, reacting with a moisture proof agent, an oxidizing agent, a coupling agent and the like, mixing, drying and the like. The novel coating material can enable the controlled-release rate of fertilizer to be moderate and stable, loss rate of the fertilizer can be lowered effectively, utilization efficiency of the fertilizer is increased, healthy growth of plants is promoted, and yield is increased; the novel coating material is green, environment friendly and free of pollution to the environment; the preparation method of the novel coating material is simple to operate and beneficial to popularization and application.

Description

【Technical Field】 [0001] The invention belongs to the technical field of controlled release fertilizer preparation, and specifically relates to a preparation method and application of a novel fertilizer controlled release coating material. 【Background technique】 [0002] In rainy seasons, on the one hand, it is inconvenient for the fertilization work, and on the other hand, the fertilizer applied is easy to lose with frequent rainfall, which affects the efficiency of fertilization. The soluble inorganic fertilizer will dissolve at a faster rate, causing fertilizer waste. It has caused eutrophication pollution of water bodies, which greatly restricts the promotion and use of fertilizers in my country. [0003] For this reason, some people prepare slow-release (controlled-release) fertilizers by adding a coating on the surface of the fertilizer. For example, the patent document (Patent No.: ZL201120068726.0) discloses a slow-release compound fertilizer coated with a so-called organic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
CPCC05B7/00C05G3/00C05C1/00C05D3/00C05D5/00C05D9/00C05D9/02C05F11/00C05F11/02C05G5/37
Inventor 张莘蔓
Owner 张莘蔓
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