Preparation method of diuron slow-release composite material
The encapsulation layer formed by self-assembly of biochar and azobenzene derivatives and pectin solves the problems of insufficient loading rate and easy damage to the walls in the Dicaolong sustained release composite materials, achieving efficient and controllable sustained release effects and plant growth promotion.
CN120283782APending Publication Date: 2025-07-11ANHUI GUANGXIN AGROCHEM
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Patent Information
- Application Number
- CN202510434823.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-08
- Publication Date
- 2025-07-11
AI Technical Summary
Technical Problem
In the prior art, the effective ingredient utilization rate of Dicaolong is low, the microcapsule load rate is insufficient, and the wall material is prone to damage, resulting in sustained release failure.
Method used
Biochar prepared by pyrolysis of straw and adsorbing dicaolone, self-assembled with azobenzene derivative and pectin to form an encapsulation layer to form a light/biological enzyme dual response sustained release composite material.
Benefits of technology
It improves the load rate and controllable sustained release performance of Dicaolong, enhances the mechanical strength of the material, extends the medicinal efficacy cycle and promotes plant growth.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention discloses a preparation method of a diuron slow-release composite material, and belongs to the technical field of herbicide preparation. Comprising the following steps: S1, cleaning straw, airing, crushing, drying, grinding and sieving to obtain a biochar precursor; performing pyrolysis, acid leaching, washing, drying, grinding and sieving on the biochar precursor under vacuum to obtain biochar; s2, mixing the biochar, diuron and deionized water, oscillating, and filtering to obtain diuron-adsorbed biochar; stirring the diuron-adsorbed biochar, an azobenzene derivative, pectin, EDC, NHS and absolute ethyl alcohol overnight, and performing centrifugal washing and freeze-drying to obtain the diuron slow-release composite material. The preparation method of the azobenzene derivative comprises the following steps: mixing and stirring 4-aminoazobenzene and triethylamine, adding chloralkane, refluxing and stirring, filtering and washing to obtain the azobenzene derivative.
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