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A kind of water-soluble fertilizer synergistic additive and preparation method thereof

A technology of synergistic additive and water-soluble fertilizer, applied in fertilization device, fertilizer mixture, application and other directions, can solve the problems of limited nutrient fixation, difficult to use in large areas, single synergist, etc., so as to improve the utilization rate of fertilizer and prevent the loss of fertilizer efficiency. , the effect of preventing nutrient loss

Inactive Publication Date: 2016-04-06
蒋浩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The application of the above fertilizer synergists in compound fertilizers and slow-release fertilizers has certain synergistic properties, but with the large-scale promotion of water-soluble fertilizers, these synergists have been difficult to adapt to market applications due to factors such as singleness and insolubility
Through chemical reaction inhibitors, the use of urease inhibitors and nitrification inhibitors is limited due to their high tendency to pollute water bodies
In order to prevent the volatilization and leakage of fertilizer nutrients, the nutrient is fixed by the adsorption material of the porous material. Since the porous material is difficult to dissolve in water, it is not suitable for water-soluble fertilizer. Even if polyamino acid is used for complexation, the nutrient fixation is extremely limited. It can only have a complexation effect on some nutrient ions, and the cost of polyamino acid is high, so it is not easy to use in a large area

Method used

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  • A kind of water-soluble fertilizer synergistic additive and preparation method thereof
  • A kind of water-soluble fertilizer synergistic additive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) 70 parts by weight of fumed silica colloidal nanoparticles with a particle diameter of 50nm, 20 parts by weight of methyl acrylate with a molecular weight of 1000-1500, and 10 parts by weight of polyethylene with a molecular weight of 120,000 and a degree of alcoholysis of 88% Alcohol and 0.2 parts by weight of polydimethylsiloxane dispersant are uniformly mixed in a high-speed mixer, and then sent to a reflective pulverizer through mechanical pulverization and gas collision, and the material forms a powder with an interpenetrating network structure at a dispersion speed of 1200rpm. body.

[0040] (2) Put the powder obtained in step (2) and 0.2 parts by weight of copper hydrogen peroxide into the reaction kettle, pass nitrogen protection in the dry powder state, heat to 60-80°C, and stir the reaction at a high speed of 400rpm with the stirring blade 45min, obtain composite polymer;

[0041] (3) Mix the composite polymer obtained in step (2) with 2 parts by weight o...

Embodiment 2

[0047] (1) 75 parts by weight of fumed silica colloidal nanoparticles with a particle diameter of 80nm, 18 parts by weight of ethyl methacrylate with a molecular weight of 1000-1500, 20 parts by weight of a medium-polymerization degree with a molecular weight of 130,000 and a degree of alcoholysis of 88%. Polyvinyl alcohol and 0.3 parts by weight of polyoxyethylene sorbitan monooleate dispersant are uniformly mixed in a high-speed mixer and then sent to a reflective pulverizer through mechanical pulverization and gas collisions, and the materials are formed into mutual particles at a dispersion speed of 1300rpm. Powder with network structure.

[0048] (2) Send the powder obtained in step (2) and 0.2 parts by weight of ferric hydrogen peroxide into the reaction kettle, pass nitrogen protection in the dry powder state, heat to 60-80°C, and stir the reaction at a high speed of 500rpm with the stirring blade 40min, obtain composite polymer;

[0049] (3) Mixing the composite polym...

Embodiment 3

[0051] (1) 80 parts by weight of fumed silica colloidal nanoparticles with a particle diameter of 60nm, 15 parts by weight of propyl acrylate with a molecular weight of 1000-1500, and 15 parts by weight of polyethylene with a molecular weight of 150,000 and a degree of alcoholysis of 88% Alcohol and 0.2 parts by weight of sorbitan monopalmitic acid ester dispersant are mixed uniformly in a high-speed mixer and then sent to a reflective pulverizer through mechanical pulverization and gas collision, and the material forms an interpenetrating network structure powder at a dispersion speed of 1500rpm body.

[0052] (2) Put the powder obtained in step (2) and 0.5 parts by weight of ferric chloride into the reaction kettle, pass nitrogen protection in the dry powder state, heat to 60-80°C, stir the reaction at a high speed of 500rpm for 30min , to obtain composite polymer;

[0053] (3) Mix the composite polymer obtained in step (2) with 2 parts by weight of a copolymer of 2-acrylam...

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Abstract

The invention discloses a water-soluble fertilizer synergist additive. The water-soluble fertilizer synergist additive comprises the following components in parts by weight: 70-80 parts of white carbon black, 15-20 parts of acrylate, 10-15 parts of polyvinyl alcohol, 1-2 parts of stabilizing agent, 0.2-0.5 part of initiating agent and 0.2-0.3 part of dispersing agent. By virtue of dry process interpenetrating network, three materials are interpenetrated and wound to form a stable polymer, and the original performance of the materials before interpenetrating is guaranteed; meanwhile, three hydrophilic, adsorbed and water-soluble materials can complement defects in properties each other, so that the water-soluble fertilizer synergist additive can meet hydrophilic, adsorption and water solubility properties when being applied to a water-soluble fertilizer. By virtue of interpenetrating network, water-soluble nutrients in the water-soluble fertilizer are adsorbed, especially acrylate and nutrient ions in the water-soluble fertilizer form a stable compound, nutrients are prevented from being lost, and excellent decomposition on calcium carbonate, calcium hydroxide and calcium phosphate in water is realized, so that efficiency of the water-soluble fertilizer is improved.

Description

technical field [0001] The invention relates to the field of synergistic fertilizers, in particular to a synergistic additive for water-soluble fertilizers and a preparation method thereof. Background technique [0002] As an important agricultural material, chemical fertilizers play a pivotal role in increasing food production. Although my country has a large amount of fertilizer, its fertilizer use efficiency is far lower than that of developed countries in the world. In my country's traditional fertilizer fertilization, the utilization rate of nitrogen fertilizer is 30% to 35%, the seasonal utilization rate of phosphorus fertilizer is 8% to 20%, and the utilization rate of potassium fertilizer is about 50%. Most of the nutrients are lost in the air and groundwater with leakage and evaporation. , not only waste serious, but also cause soil, air, groundwater pollution. Therefore, modifying fertilizers to improve fertilizer efficiency is an effective way to reduce fertilizer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00C05G3/08C05G3/90
Inventor 陈庆曾军堂
Owner 蒋浩
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