A kind of functional urea based on modified wax retaining agent and preparation method thereof

Abstract

The invention discloses a functional urea based on a modified wax retaining aid and a preparation method thereof. The modified wax retaining aid is prepared by the following method: melting the composite wax under the protection of an inert gas and heating and stirring , then drip the grafted monomer that dissolves the initiator under stirring, then add eumelanin dropwise, the mass ratio of composite wax, initiator, grafted monomer and eumelanin is (80-90): (1.5-4.5 ): (5-15): (0.5-3.5), heated and reacted with stirring to obtain a modified wax retention assistant. The life-preserving auxiliary agent prepared by the present invention has low melting point and good light-shielding property, and the mixing of the life-keeping auxiliary agent and melatonin can better isolate melatonin from the air, avoiding directly adding melatonin to urea The risk of oxidative inactivation of the element.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a functional urea based on a modified wax retention assistant and a preparation method thereof. Background technique [0002] Chemical fertilizers are important means of production in agricultural production to ensure increased yields. With the increase of human food demand, the amount of chemical fertilizers is also increasing. At present, urea is the solid nitrogen fertilizer with the widest spectrum and the largest amount of use. After being applied to the soil, under various conditions, there will be a large amount of residue, volatilization, and loss, and a small amount will be absorbed by crops, resulting in a waste of resources. negative impact on the environment and sustainable agricultural development. On the basis of reducing the amount of common urea, improving the absorption rate of crops, reducing the damage to environmental resources, and improving the comprehe...

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Problems solved by technology

Patent CN104371473A discloses a new type of paraffin, whose glass transition temperature is 70-100°C. The high temperature is mainly to improve the high-temperature exudation performance of existing paraffin-based coatings, although the new type of paraffin has good heat resistance and wear resistance. It can effectively improve the high-temperature exudation performance of existing paraffin-based coatings, but this new type of paraffin has no direct protective effect on functional substances, and functional substances cannot be efficiently combined with urea to play a synergistic effect

Patent CN106631480A discloses a functional fertilizer, which can effectively transform heavy metals in the soil and achieve the double benefits of high yield and repairing heavy metals in the soil. However, a large amount of modified functional substances are simply mixed in the compound fertilizer, which is cumbersome and expensive.

Patent CN109748718A discloses a functional compound fertilizer, which has a good fertilizer source, can effectively kill germs in the soil, and effectively reduce crop root pests, but the method of adding functional components is simple, and direct mixing cannot make the functional components effective. achieve the best

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