Salt-tolerant agricultural nutritional type super absorbent resin and preparation method thereof

A superabsorbent resin and nutrient-based technology, applied in chemical instruments and methods, applications, agriculture, etc., can solve problems such as poor salt tolerance and inability to provide nutrients for crop growth, achieve strong water-locking performance, and improve soil buffering capacity, growth-promoting effect

Inactive Publication Date: 2015-11-25
李桂武
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Superabsorbent resins, which are widely used in agriculture now, can achieve a certain water absorption effect, but this kind of water-absorbent resin has poor salt tolerance, and when used in agriculture, it cannot provide effective nutrients to crops and promote crop growth. , and absorb nutrients from the soil around the crops

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] In the present embodiment, the percentage by weight of raw materials is: 4% xanthan gum, 5% guar gum, 4% sodium humate, 8% monoammonium phosphate, 40% acrylic acid, 12% sodium hydroxide, 11% reinforcing agent %, initiator 7%, crosslinking agent 9%.

[0017] The preparation method of salt-tolerant agricultural nutritional superabsorbent resin, the steps are as follows:

[0018] 1) Prepare a sodium hydroxide solution with a mass concentration of 35%, and neutralize acrylic acid, and the neutralization degree is 65% for later use;

[0019] 2) Add xanthan gum and guar gum to the reaction vessel, and pass through nitrogen protection, heat in a water bath, activate at 60°C for 2 hours, cool at 50°C, add a mixture of humic acid and monoammonium phosphate, and then neutralize well The acrylic acid, reinforcing agent, initiator, and crosslinking agent were added in a water bath, and nitrogen gas was introduced at the same time, the reaction temperature was controlled at 50°C, t...

Embodiment 2

[0024] In the present embodiment, the percentage by weight of raw materials is: 4% xanthan gum, 5% guar gum, 6% sodium humate, 7% monoammonium phosphate, 38% acrylic acid, 13% sodium hydroxide, 10% reinforcing agent %, initiator 8%, crosslinking agent 9%.

[0025] The preparation method of salt-tolerant agricultural nutritional superabsorbent resin, the steps are as follows:

[0026] 1) Prepare a sodium hydroxide solution with a mass concentration of 30%, and neutralize acrylic acid, and the neutralization degree is 65% for later use;

[0027] 2) Add xanthan gum and guar gum to the reaction vessel, and pass through nitrogen protection, heat in a water bath, activate at 60°C for 1.5 hours, cool at 40°C, add a mixture of humic acid and monoammonium phosphate, and then neutralize well The acrylic acid, reinforcing agent, initiator, and crosslinking agent were added in a water bath, and nitrogen gas was introduced at the same time, the reaction temperature was controlled at 70°C,...

Embodiment 3

[0032] In the present embodiment, the percentage by weight of raw materials is: 6% xanthan gum, 5% guar gum, 7% sodium humate, 8% monoammonium phosphate, 31% acrylic acid, 12% sodium hydroxide, 12% reinforcing agent %, initiator 8%, crosslinking agent 11%.

[0033] The preparation method of salt-tolerant agricultural nutritional superabsorbent resin, the steps are as follows:

[0034] 1) Prepare a sodium hydroxide solution with a mass concentration of 25%, and neutralize acrylic acid, with a neutralization degree of 70% for subsequent use;

[0035] 2) Add xanthan gum and guar gum to the reaction vessel, and pass through nitrogen protection, heat in a water bath, activate at 70°C for 1 hour, cool at 45°C, add a mixture of humic acid and monoammonium phosphate, and then neutralize well The acrylic acid, reinforcing agent, initiator, and crosslinking agent were added in a water bath, and nitrogen gas was introduced at the same time, the reaction temperature was controlled at 65°...

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PUM

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Abstract

The invention provides salt-tolerant agricultural nutritional type super absorbent resin and a preparation method thereof. The salt-tolerant agricultural nutritional type super absorbent resin comprises the following raw materials in percentage by weight: 3%-6% of xanthan gum, 4%-7% of guar gum, 2%-7% of sodium humate, 4%-9% of monoammonium phosphate, 30%-45% of acrylic acid, 5%-15% of sodium hydroxide, 4%-15% of a reinforcing agent, 5%-15% of an initiator and 5%-15% of a cross-linking agent. The preparation process of the salt-tolerant agricultural nutritional type super absorbent resin is simple, the utilized raw materials are easily available, and prepared absorbent resin has relatively high water-absorbing capacity and salt tolerance and can supply nutrient substances required for the growth of crops.

Description

technical field [0001] The invention relates to the field of water-absorbent resins, in particular to a salt-tolerant agricultural nutritional superabsorbent resin and a preparation method thereof. Background technique [0002] With the rapid growth of the number of human beings on the earth in the past two centuries, especially after the industrial revolution, human beings have taken a lot of resources from the earth, especially the use of fresh water resources, and the use of fresh water in agriculture has become increasingly serious To invent a superabsorbent resin that can be widely used in agriculture is also an important direction for scientists to study. [0003] Superabsorbent resins, which are widely used in agriculture now, can achieve a certain water absorption effect, but this kind of water-absorbent resin has poor salt tolerance, and when used in agriculture, it cannot provide effective nutrients to crops and promote crop growth. , and absorb nutrients from the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F251/00C08F220/06C09K17/32C05G3/04C05G3/80
Inventor 李桂武
Owner 李桂武
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