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Optical oxygen sensing diaphragm as well as preparation method and application thereof

An oxygen sensing film and optical technology, which is applied in the field of oxygen sensing and detection, can solve the problems of inability to detect the change of oxygen concentration in solution and air at the same time, high cost, complicated process of oxygen sensing film, etc., so as to improve the detection accuracy and cost. Low, good response reversibility

Pending Publication Date: 2022-04-12
上海前瞻创新研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an optical oxygen sensing membrane and its preparation method and application, to solve the problem that the existing oxygen sensing membrane has complex process, high cost, and cannot detect the change of oxygen concentration in the solution and the air at the same time

Method used

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  • Optical oxygen sensing diaphragm as well as preparation method and application thereof
  • Optical oxygen sensing diaphragm as well as preparation method and application thereof
  • Optical oxygen sensing diaphragm as well as preparation method and application thereof

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preparation example Construction

[0042] A second aspect of the present invention provides a method for preparing an optical oxygen sensing diaphragm, comprising the following steps:

[0043] Step 1. Import the 3D model file of the chip layer into the relevant software of the 3D printer, perform 3D printing to obtain the printed structure, and then perform ultraviolet curing on the printed structure to obtain the chip layer;

[0044] Step 2, preparing a fluorescent oxygen sensing film layer;

[0045]Step 3: Evenly smear a UV-curable adhesive on the upper surface of the chip layer, bond the fluorescent oxygen sensing film layer to the upper surface of the chip layer correspondingly, and cure under ultraviolet light to obtain an optical oxygen sensing membrane.

[0046] In some embodiments of the present invention, the software used by the 3D printer in step 1 is Preform.

[0047] In some embodiments of the present invention, in step 1, the support structure of the chip layer, layer thickness, printing material...

Embodiment 1

[0069] Embodiment 1: Preparation of Optical Oxygen Sensing Diaphragm

[0070] (1) Preparation of chip layer

[0071] Import the 3D model file into the relevant software of the 3D printer—Preform, set the parameters such as the support structure, layer thickness and material required for 3D printing, and then connect to the 3D printer for printing; among them, the support structure is as follows: figure 1 As shown, it includes dual channels set in parallel, 4 detection areas, 2 inlets, and 2 outlets.

[0072] After printing, soak the printed structure in isopropanol solution for 3 hours to wash off excess uncured printing material; then put it into a UV post-curing box for post-curing. The temperature of the curing box is set at 35°C and the curing time is 3 hours. ~5h.

[0073] (2) Preparation of fluorescent oxygen sensing film layer

[0074] S1. Configure the fluorescent indicator solution, and dissolve the fluorescent indicator tris(4,7-biphenyl-1,10-phenanthroline) ruthe...

Embodiment 2

[0081] Embodiment 2: The usage method of optical oxygen sensing diaphragm

[0082] The performance test of the optical oxygen sensing diaphragm is carried out by using a fluorescence spectrometer. The two channels are respectively passed into the sample (gas or liquid) saturated with nitrogen and oxygen, and the flow rate of the two peristaltic pumps is mixed and adjusted through the three-way valve. Adjust the concentration of nitrogen and oxygen, connect through the pipeline, and finally enter the entrance of the optical oxygen sensing diaphragm, place the optical oxygen sensing diaphragm in the detection sample cell of the fluorescence spectrometer, adjust the parameters of the spectrometer, the excitation wavelength is 460nm, the slit width is 10nm, Collect the wavelength range of 480-800nm, detect the fluorescence intensity, and determine the oxygen concentration.

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Abstract

The invention relates to the technical field of oxygen sensing detection, in particular to an optical oxygen sensing diaphragm as well as a preparation method and application thereof. The optical oxygen sensing membrane comprises a fluorescent oxygen sensing membrane layer and a chip layer, and the fluorescent oxygen sensing membrane layer is bonded to the upper surface of the chip layer; the fluorescent oxygen sensing film comprises a polymer matrix and a fluorescent indicator uniformly dispersed in the polymer matrix. The optical oxygen sensing membrane provided by the invention integrates a micro-fluidic channel and an optical oxygen sensing membrane, can sensitively and quickly respond to gaseous oxygen and dissolved oxygen, and can improve the detection accuracy through dual-channel detection; the chip layer is manufactured by adopting a 3D printing technology, and is simple in manufacturing process, good in air tightness, small in size, convenient to carry and capable of being repeatedly used.

Description

technical field [0001] The invention relates to the technical field of oxygen sensing and detection, in particular to an optical oxygen sensing diaphragm and its preparation method and application. Background technique [0002] Oxygen detection is very important for biomedicine and water environment monitoring. Divers need to carry respirators when working underwater. The partial pressure of oxygen in the respirator will increase with the increase of diving depth. When the air supply is abnormal, if it cannot be detected in time and Taking corresponding measures may lead to hypoxia or oxygen poisoning, which will directly endanger human life. In order to ensure the safety of the respiratory system of underwater workers, effective real-time monitoring of the oxygen content in the respirator is required. The detection of dissolved oxygen in water is of great significance to the fields of environmental monitoring and aquaculture. [0003] As a recognized high-tech at home and...

Claims

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Application Information

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IPC IPC(8): G01N21/64B32B27/28B32B3/04B32B3/26B32B7/12B32B38/00B32B38/16B32B27/00B32B27/08B29D7/01
Inventor 梁丽娟赵建龙
Owner 上海前瞻创新研究院有限公司
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