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A kind of starch water retaining agent and preparation method thereof

A technology of water-retaining agent and starch, which is applied in the direction of chemical instruments and methods, applications, organic fertilizers, etc., can solve the problems of easy moisture, long preparation cycle, etc., and achieve the effect of safe and convenient operation, easy implementation, and high practicability

Inactive Publication Date: 2016-01-06
FUJIAN AGRI & FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The preparation method of the above-mentioned new starch water-retaining agent, in addition to the free radical copolymerization, is to obtain the water-retaining agent by aqueous solution polymerization, and the preparation cycle is long, and it is prone to moisture after drying.

Method used

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  • A kind of starch water retaining agent and preparation method thereof
  • A kind of starch water retaining agent and preparation method thereof
  • A kind of starch water retaining agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Materials and reagents: soluble starch (BR), urea (analytical grade), acrylic acid (CP), acrylamide (AR), sodium hydroxide (AR), potassium persulfate (AR), absolute ethanol (AR), argon .

[0035] Experimental equipment: three-neck round bottom flask, stirrer, constant temperature water bath, electronic balance, glass rod, beaker, constant temperature oven, mortar.

[0036] A preparation method of starch water retaining agent, specifically comprising the following steps:

[0037] (1) Starch gelatinization: Weigh 5g of 3.30wt% soluble starch solution into a three-necked round-bottomed flask, add 150mL of distilled water, keep warm in a constant temperature water bath at 90°C, and stir at a constant speed for 90min to make the starch into a transparent paste;

[0038] (2) Cooling treatment: Infuse argon gas, add 6.60g of 0.044g / mL urea solution to the gelatinized starch, and stir at a constant speed until the temperature drops to 65°C;

[0039] (3) Adhesive preparation: ...

Embodiment 2

[0044] Materials and reagents: soluble starch (BR), urea (analytical grade), acrylic acid (CP), acrylamide (AR), sodium hydroxide (AR), potassium persulfate (AR), absolute ethanol (AR), argon .

[0045] Experimental equipment: three-neck round bottom flask, stirrer, constant temperature water bath, electronic balance, glass rod, beaker, constant temperature oven, mortar.

[0046] A preparation method of starch water retaining agent, specifically comprising the following steps:

[0047] (1) Starch gelatinization: Weigh 5g of 2.30wt% soluble starch solution into a three-necked round-bottomed flask, add 150mL of distilled water, keep warm in a constant temperature water bath at 90°C, stir at a constant speed for 70min, and make the starch into a transparent paste;

[0048] (2) Cooling treatment: Infuse argon gas, add 0.044g / mL urea solution 6.60g to the gelatinized starch, and stir at a constant speed until the temperature drops to 55°C;

[0049] (3) Adhesive preparation: mix 16g...

Embodiment 3

[0054] Materials and reagents: soluble starch (BR), urea (analytical grade), acrylic acid (CP), acrylamide (AR), sodium hydroxide (AR), potassium persulfate (AR), absolute ethanol (AR), argon .

[0055] Experimental equipment: three-neck round bottom flask, stirrer, constant temperature water bath, electronic balance, glass rod, beaker, constant temperature oven, mortar.

[0056] A preparation method of starch water retaining agent, specifically comprising the following steps:

[0057] (1) Starch gelatinization: Weigh 5g of 3.00wt% soluble starch solution into a three-necked round-bottomed flask, add 150mL of distilled water, keep warm in a constant temperature water bath at 90°C, stir at a constant speed for 100min, and make the starch into a transparent paste;

[0058] (2) Cooling treatment: Infuse argon gas, add 6.60 g of 0.044 g / mL urea solution to the gelatinized starch, and stir at a constant speed until the temperature drops to 60 °C;

[0059] (3) Adhesive preparation...

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Abstract

The invention discloses a method for preparing a starch water-retaining agent. The main preparation steps include: gelatinization of starch, cooling treatment, preparation of an adhesive, polymerization of an initiator, and drying. Resin obtained by copolymerization and crosslinking. The method in the present invention does not require aseptic operation, and the preparation process is simple. The obtained water-retaining agent has the advantages of enhancing soil water retention, improving soil structure, reducing soil moisture and nutrient loss, and improving water and fertilizer utilization. Its operation is safe and convenient and has high practicability . It has broad application development prospects in agricultural production.

Description

technical field [0001] The invention relates to a starch water-retaining agent and a preparation method thereof, belonging to the field of soil drought control. Background technique [0002] Drought and water shortage are the main constraints to the sustainable development of agriculture worldwide, especially in Northwest China. At present, the average annual precipitation in 45% of my country's regions is less than 400mm, and the water shortage in irrigated farmland is more than 30 billion / m 2 . In the part where plants use precipitation, the transpiration that is ineffectively consumed by plants accounts for more than 95% of the water used by plants. Therefore, reducing soil surface evaporation and crop transpiration has become the focus of improving farmland water use efficiency. In the practice of agricultural production, the most direct and effective way is chemical water-saving technology, and water-retaining agent is one of the effective methods used to solve droug...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F251/00C09K17/32C09K101/00
Inventor 潘大仁刘崟艳游纪萍何海斌黄慧蓉李旭丹
Owner FUJIAN AGRI & FORESTRY UNIV
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