Water retaining agent and preparation method thereof

A technology of water-retaining agent and initiator, applied in the direction of chemical instruments and methods, applications, organic fertilizers, etc., can solve the problems of difficult formation of water-retaining layer, poor effect of anti-seepage and fertilizer retention, etc., and achieve strong viscoelasticity and convenient Effect of granulation and high water content

Pending Publication Date: 2018-06-22
北京乾建绿化工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of use, the anti-seepage and water-retaining agent is first applied to the soil, and then the soil is irrigated. During the irrigation process, the water-retaining agent absorbs water and swells, but the form of the water-retaining agent is solid powder. Even if the water-retaining agent absorbs water and swells, the soil surface It is also difficult to form a water-retaining layer, and the effect of anti-seepage and fertilizer retention is not good

Method used

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  • Water retaining agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] S1: Add 110 kg of acrylic acid, 80 kg of 1,3-diaminocarbazide, 7 kg of hydrogen peroxide, and 120 kg of water into the autoclave. The temperature of the autoclave is 100°C, the stirring speed is 35r / min, and the uniform stirring is 135 min. The concentration of S2 is 1.2g / L; S2: Add 45kg of potassium chloride and 27kg of potassium dihydrogen sulfate to the autoclave, and stir evenly for 35min;

[0029] S3: Raise the temperature of the high-pressure reactor to 145°C, and the stirring speed to 54r / min, while continuously introducing carbon dioxide, the flow rate of carbon dioxide is 33m 2 / h, slowly drip 22 kg of polyoxyethylene sorbitan trioleate, 22 kg of polyoxyethylene sorbitan laurate, and 12 kg of polyacrylamide into the reaction kettle. After the addition is completed, react for 45 minutes;

[0030] S4: Increase the stirring speed of the autoclave to 66r / min, and stir uniformly for 4.5h. After the stirring is completed, reduce the temperature of the autoclave to room tem...

Embodiment 2

[0032] S1: Add 100kg of acrylic acid, 70kg of 1,3-diaminocarbazide, 5kg of hydrogen peroxide, and 140kg of water into the autoclave. The temperature of the autoclave is 110°C, the stirring speed is 30r / min, and the uniform stirring is 135min. The concentration of S2 is 1.4g / L; S2: Add 40kg of potassium chloride and 25kg of potassium dihydrogen sulfate to the high-pressure reactor, and stir evenly for 30min;

[0033] S3: Raise the temperature of the high-pressure reactor to 140°C, the stirring speed to 58r / min, and the helium gas is continuously introduced at the same time, the flow rate of the helium gas is 36m 2 / h, slowly drip 20 kg of polyoxyethylene sorbitan trioleate, 24 kg of polyoxyethylene sorbitan laurate, and 14 kg of polyacrylamide into the reaction kettle. After the addition is completed, react for 40 minutes;

[0034] S4: Increase the stirring speed of the autoclave to 64r / min, and stir uniformly for 4 hours. After the stirring is completed, reduce the temperature of th...

Embodiment 3

[0036] S1: Add 120kg of acrylic acid, 70kg of 1,3-diaminocarbazide, 5kg of potassium persulfate, and 140kg of water into the autoclave. The temperature of the autoclave is 90℃, the stirring speed is 40r / min, and the uniform stirring is 150min. The concentration is 1g / L;

[0037] S2: Add 40 kg of potassium chloride and 29 kg of potassium dihydrogen sulfate to the high-pressure reaction vessel, and stir evenly for 30 minutes;

[0038] S3: Raise the temperature of the high-pressure reactor to 140°C, and the stirring speed to 58r / min, while continuously introducing carbon dioxide, the flow of carbon dioxide is 30m 2 / h, slowly drip 24 kg of polyoxyethylene sorbitan trioleate, 24 kg of polyoxyethylene sorbitan laurate, and 14 kg of polyacrylamide into the reaction kettle. After the addition is complete, react for 40 minutes;

[0039] S4: Increase the stirring speed of the autoclave to 68r / min, and stir uniformly for 4 hours. After the stirring is completed, reduce the temperature of the a...

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Abstract

The invention relates to a water retaining agent and a preparation method thereof. The water retaining agent comprises the raw materials of: in parts by weight, 100-120 parts of acrylic acid, 70-90 parts of 1,3-diamino urea, 5-9 parts of initiator, 100-140 parts of water, 20-24 parts of polyoxyethylene sorbitan trioleate, 22-26 parts of polyoxyethylene sorbitan laurate, 40-50 parts of potassium chloride, 25-29 parts of potassium dihydrogen sulfate and 10-14 parts of polyacrylamide. The water retaining agent is solid particles of 1-2 mm, water absorption and swelling are conducted after the water retaining agent is applied to soil, and a water retaining layer is formed on the surface layer of the soil, so that anti-seepage and fertilizer-maintaining effects are achieved.

Description

Technical field [0001] The invention relates to the field of agricultural water retention, more specifically, it relates to a water retention agent and a preparation method thereof. Background technique [0002] Water retention agent, also known as water absorbing agent and soil moisturizer, is a kind of polymer material with special functions developed at home and abroad in recent years. It is widely used in agriculture and forestry because of its good water absorption performance and high water retention performance without dehydration. [0003] At present, the main components of the commonly used water-retaining agents on the market are polyacrylic acid and sodium polyacrylate, and a small amount of bentonite or attapulgite is also used as a water-retaining agent to increase the water-retaining effect of the water-retaining agent. The patent application document with the application announcement number CN 102329621A discloses an anti-seepage water-retaining agent. The patent pr...

Claims

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Application Information

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IPC IPC(8): C09K17/40C08F120/06C09K101/00
CPCC08F120/06C09K17/40C09K2101/00
Inventor 白海峰张婵婵
Owner 北京乾建绿化工程有限公司
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