Method for preparing quartz glass microchannel core plate

Abstract

The invention relates to a method for preparing a quartz glass microchannel core plate. Quartz glass is used as a substrate to prepare a boss quartz glass plate substrate by machining; a quartz glasscapillary is welded on a boss surface according to a specific trend by using a hot melting technology; a groove quartz glass plate substrate is prepared by using a grooving machine; and finally the boss quartz glass plate substrate and the groove quartz glass plate substrate are combined to form the complete quartz glass microchannel core plate by using a hot melting technology. According to the invention, the quartz glass is selected as the substrate material, so that higher heat resistance and light transmittance are achieved. In the method, a common machining technology is combined with thehot melting technology, and operation is simple. Compared with a method for preparing a glass microchannel by mechanical micromachining, the method has the advantages that the surface quality of theinner wall of the microchannel is high; chemical reactions can be stably carried out; the phenomenon of reaction liquid leakage does not occur; the size of the microchannel can be accurately adjustedthrough the quartz glass capillary; and the trend and length of the microchannel can be adjusted according to requirements of the chemical reactions. The space between the microchannel and the groovecan be reserved for heating and heat exchange.

Description

Technical field [0001] The invention relates to a method for preparing a quartz glass microchannel core plate, and belongs to the technical field of microreactors. Background technique [0002] The choice of the material of the microchannel reactor largely depends on its application needs, including operating conditions, physical properties of the mixture, cost, mass production capacity, and ease of manufacturing. Currently, glass, silicon, metal and polymer are widely used. The glass-based microchannel reactor is suitable for a variety of chemical reactions, is transparent and easy to observe, and captures changes in chemical reactions. At the same time, it can also realize photocatalytic reactions that are difficult to amplify by traditional reactors, such as rapid drug screening and heterogeneous catalytic reactions. [0003] Compared with ordinary glass, quartz glass has extremely low thermal expansion coefficient, high temperature resistance, excellent chemical stability, exc...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for preparing a quartz glass microchannel core plate, which solves the problems of high manufacturing cost, mechanical load stress concentration, poor surface quality of glass channels, adhesives or fixtures in existing glass-based microchannel reactors. Poor sealing effect, prone to leakage, time-consuming and other problems

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