Micro-mixing channel and micro-fluidic chip for preparing nano-pesticide

By designing micro-mixing channels and microfluidic chips, and employing a shrink-expansion mixing chamber and a date-shaped baffle structure, the problem of uniformity and stability of nano-pesticides in large-scale production was solved, enabling efficient preparation and industrial application.

CN120132738BActive Publication Date: 2026-05-29EAST CHINA UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
EAST CHINA UNIV OF SCI & TECH
Filing Date
2024-10-24
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing technologies struggle to maintain the uniformity and stability of nanopesticides in large-scale production. The lack of equipment capable of producing stable and controllable nanoformulations from early development to commercial application limits the industrialization process of nanopesticides.

Method used

A micro-mixing channel and microfluidic chip are designed, employing a combination of contraction-expansion mixing chambers and a date-shaped baffle structure. By changing the channel cross-sectional area and splitting and recombining fluid flow, fluid mixing is enhanced, making it suitable for the preparation of nano-pesticides.

Benefits of technology

It has achieved efficient preparation of nano-pesticides with small particle size and good dispersion, which meets the needs of industrial scale-up production and improves mixing efficiency and stability.

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Abstract

The present application belongs to the field of microfluidic chip, and particularly relates to a micro mixing channel and a microfluidic chip for preparing nano-pesticide. The micro mixing channel comprises at least two feeding ports, at least two inlet channels communicated with the feeding ports, one inlet communication channel communicated with the other ends of all the inlet channels away from the feeding ports, at least two micro mixing units communicated with the inlet communication channel, one outlet communication channel communicated with the last micro mixing unit, and one discharging port communicated with the outlet communication channel; the micro mixing unit is a contraction-expansion mixing chamber with a date kernel-shaped baffle arranged inside, which comprises an inlet of the contraction-expansion mixing chamber, a middle structure with the date kernel-shaped baffle arranged inside, and an outlet of the contraction-expansion mixing chamber, and the contraction-expansion mixing chamber of the last micro mixing unit is communicated with the contraction-expansion mixing chamber of the next micro mixing unit through the outlet of the contraction-expansion mixing chamber. The micro mixing channel and the microfluidic chip can be used for preparing nano-pesticide, and have simple structure, convenient processing and wide application range.
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