Anti-clogging microreactor for synthesizing high-viscosity silicone rubber and continuous preparation method

By using a microreactor with a fractal microchannel network and a low surface energy coating, combined with online monitoring and closed-loop feedback control, the clogging problem in the synthesis of high-viscosity silicone rubber was solved, realizing a continuous preparation method with stable production and high energy consumption, thus improving product quality consistency and production efficiency.

CN121372243APending Publication Date: 2026-01-23XINJIANG HESHENG SILICON NEW MATERIAL CO LTD
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Patent Information

Application Number
CN202511782106.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-11-29
Publication Date
2026-01-23

AI Technical Summary

Technical Problem

Existing microreactors are prone to clogging during the synthesis of high-viscosity silicone rubber, making it difficult to operate stably for a long time. They also result in inconsistent product quality, low production efficiency, and high energy consumption.

Method used

The microreactor, which employs a fractal structure design for its microchannel network and a low surface energy material coating, combined with an online monitoring and closed-loop feedback control system, achieves efficient mixing and heat transfer, ensuring stable system operation and precise control of product quality.

Benefits of technology

The problem of microreactor clogging has been solved, enabling long-term stable production of high-viscosity silicone rubber, improving production efficiency and product consistency, and significantly reducing energy consumption.

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Abstract

The present invention relates to the technical field of high polymer material synthesis, and discloses an anti-clogging microreactor for high viscosity silicone rubber synthesis, the anti-clogging microreactor comprises a microreactor chip, and the interior of the microreactor chip is provided with a tree-shaped bifurcated microchannel network based on fractal structure design; the invention relates to a continuous preparation method of an anti-clogging microreactor for synthesizing high-viscosity silicone rubber. The continuous preparation method comprises the following steps: S1, precisely metering a methyl cyclosiloxane monomer and a vinyl siloxane monomer, and then inputting the methyl cyclosiloxane monomer and the vinyl siloxane monomer into the microreactor; s2, carrying out a controllable ring-opening polymerization reaction in the microchannel; and S3, quickly terminating the reaction by injecting a terminating agent on line, and controlling the molecular weight and distribution of the polymer. Compared with the prior art, the method has the advantages that the problems that an existing microreactor is prone to blockage and difficult to operate stably for a long time when treating a high-viscosity siloxane polymerization system are solved, meanwhile, the method can achieve accurate control over product quality and continuity and intellectualization of the production process, the production efficiency is remarkably improved, and energy consumption is reduced.
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