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A kind of water-soluble ternary polymer phosphate fertilizer synergist and its preparation method and application

A technology of ternary polymer and synergist, applied in the application, fertilizer mixture, fertilization device and other directions, can solve the problems of poor biodegradability, unfavorable long-term development, soil pollution, etc., to improve biodegradability and cost of use Not high, the effect of reducing soil pollution

Active Publication Date: 2019-01-08
河南福联生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing polymer synergists have fewer types, poor biodegradability, and soil pollution caused by the application of phosphorus fertilizers into the soil, which is not conducive to long-term development

Method used

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  • A kind of water-soluble ternary polymer phosphate fertilizer synergist and its preparation method and application
  • A kind of water-soluble ternary polymer phosphate fertilizer synergist and its preparation method and application
  • A kind of water-soluble ternary polymer phosphate fertilizer synergist and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Terpolymer IA / MA / AA was prepared as follows

[0028] The preparation of the polymer is as follows: (a) Weigh the molar ratio of IA:MA:AA=1:1:1 (each 0.5mol), and the initiator ammonium persulfate accounting for 2% to 10% of the total monomer mass or potassium persulfate, carry out semi-neutralization treatment to monomer IA with alkaline solution sodium hydroxide or potassium hydroxide, and the initiator is configured into a solution with a concentration of 25%, for subsequent use; (b) MA and processed IA Add to the reactor, add deionized water whose mass is 2.5 to 9 times the total mass of the monomer, pass nitrogen gas for 7 to 15 minutes, stir and heat, and after the monomer is completely dissolved and the temperature reaches 65 to 95°C, the initiator and acrylic acid are mixed at a uniform speed Add it dropwise into the reactor, and the dropping time is controlled at 40-50 minutes; (c) heat preservation reaction for 1-6 hours, stop heating and stirring, cool down an...

Embodiment 2

[0052] Structural Analysis of Terpolymer IA / MA / AA

[0053] The polymer IA / MA / AA prepared under the optimum formula in example 1 is carried out structural analysis, adopts KBr tabletting method to carry out infrared spectrogram characterization, the result is as follows Figure 1 shown. from figure 1 It can be seen that: 3430cm-1 is the O-H stretching vibration peak in the carboxyl group, and 1717.11cm-1 is the C=O double bond stretching vibration peak. The absorption peak of the double bond does not appear in the figure, indicating that the monomer residue is very small. From the infrared spectrum The data can prove that the synthesized product is a ternary polymer of IA, MA and AA.

Embodiment 3

[0055] Study on Biodegradation of Terpolymer IA / MA / AA

[0056] The polymer IA / MA / AA prepared under the optimal formulation in Example 1 was investigated for biodegradability.

[0057] (a) claim that 100g vegetable garden soil is dissolved in one liter of distilled water, filter after standing, and the clarified solution is used as inoculum for subsequent use. (b) Polymer IA / MA / AA is made into solution 4 that mass fraction is 5% with distilled water, adds appropriate amount of nutrient salt (composition of nutrient salt: calcium chloride, magnesium sulfate, ammonium sulfate, three ferric chloride, phosphate buffer solution), appropriate amount of inoculum. (c) Take distilled water instead of the polymer IA / MA / AA solution to be tested, add the same amount of nutrient salt and inoculum, and do a blank control experiment. (d) Divide the prepared above-mentioned mixed solution into 100ml Erlenmeyer flasks, with 50ml of mixed solution in each bottle, seal with a parafilm, tie it t...

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PUM

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Abstract

The invention discloses a water-soluble ternary polymer phosphate-fertilizer synergist and a preparation method and application thereof. The ternary polymer is prepared from itaconic acid, maleic anhydride, acrylic acid and an initiating agent, wherein the itaconic acid, the maleic anhydride, the acrylic acid and the initiating agent are polymerized in an aqueous solution. The preparation method includes the steps that firstly, the processed itaconic acid and maleic anhydride and an appropriate amount of deionized water are added into a four-mouth flask, nitrogen is introduced into the flask for 7-15 minutes, and heating is conducted till monomers completely dissolve and a reaction temperature is reached; then, the initiating agent of which the concentration is 25% and the acrylic acid are added dropwise into the flask at a constant speed through a constant pressure liquid funnel; after the addition is finished, reaction is conducted at a constant temperature for a certain period of time, cooling and discharging are conducted, and the IA / MA / AA ternary polymer is obtained. The ternary polymer is good in water solubility, biodegradability and chelating performance, can improve the utilization rate of phosphate fertilizers and adjust the pH value of soil, and has vast application prospects and economic value.

Description

technical field [0001] The invention relates to the technical field of synergistic phosphate fertilizer and ternary polymerization, in particular to a water-soluble ternary polymer phosphate fertilizer synergist and its preparation method and application. Background technique [0002] Phosphorus is one of the main nutrients necessary for plant growth and development. It is not only a component of many important organic compounds in plants, but also participates in various metabolic processes in plants in various ways. Therefore, phosphorus fertilizer plays an extremely important role in agricultural production. [0003] With the development of industry, the amount of phosphorus fertilizer used in agriculture continues to increase. Due to the specific physical and chemical properties in the soil and the chemical behavior of phosphate, the utilization rate of phosphorus fertilizer by crops is very low, and the utilization rate in the current season is generally only 8% to 25%....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F222/02C08F222/06C08F220/06C05G3/00
CPCC05G3/00C08F220/06C08F222/02C08F222/06
Inventor 吴鸣建李雅琪游霞崔步云沈国鹏王好斌侯翠红许秀成
Owner 河南福联生物科技有限公司