Micro-fluidic chip for geological process chemical corrosion study and making method

Abstract

The invention discloses a micro-fluidic chip for geological process chemical corrosion study and a making method. The making method includes following steps: preparing a micro-fluidic chip body, etching upper, middle and lower base layer channels, and bonding and encapsulating upper, middle and lower base layers with the micro-fluidic chip body to finally obtain the micro-fluid chip. The micro-fluidic chip body can be made of easy-to-get universal materials like sodium chloride crystal and tested rock slices, silicate glass slide having transparent characteristic or organic glass of epoxy resin is adopted as upper and lower substrates, the micro-fluidic chip can be prepared at normal temperature and normal pressure generally, and total making time is 2-3h. The method has the advantages ofhigh channel making accuracy, simple chip encapsulating process, short preparation time, flexible application and convenience for mass production, and the method expands micro-fluidic technology fromthe field of biomedicine to subjects like geophysics and energy environment.

Description

technical field [0001] The invention belongs to the technical field of microfluidic control, and specifically refers to a microfluidic chip used for chemical dissolution research in geological processes and a manufacturing method. Background technique [0002] There are often multi-component and multi-phase fluids (such as air, water, and non-aqueous pollutants, etc.) in the deep porous fractured rock mass and near-surface unsaturated rock-soil pores. The dynamical movement characteristics between them and the material exchange between rock and soil have great influence on the research of shale oil (gas) exploitation, CO 2 Geological storage and groundwater pollutant transport are of great significance. However, limited by the non-optical characteristics of rock and soil, the problem of clear and real-time monitoring of fluid movement in rock-soil pores / cracks and its impact on the surrounding environment has not been resolved, which hinders our deep understanding of pore / c...

AI Technical Summary

Problems solved by technology

However, limited by the non-optical characteristics of rock and soil, the problem of clear and real-time monitoring of fluid movement in rock-soil pores / cracks and its impact on the surrounding environment has not been resolved, which hinders our deep understanding of pore / crack media Movement and material exchange process of multiphase flow in medium

[0004] At present, the microfluidic chip materials widely used in the fields of biology and medicine mostly use crystalline silicon, glass, quartz and various polymer materials, and the conditions required for the production process are relatively strict, especially when bonding chips. , requires a variety of equipment to assist, such as crystalline silicon, glass and quartz chip bonding requires high temperature (~800°C) and high pressure, and often due to operational technical problems, defects such as Newton rings appear on the glass surface that affect experimental observation, resulting in chips Lower production yield

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