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Preparation method of dissolved oxygen sensing membrane head and dissolved oxygen sensing membrane head

A technology for sensing film and dissolved oxygen, which is applied in the manufacture of microstructure devices, processes for producing decorative surface effects, fluorescence/phosphorescence, etc., which can solve the problems of easy fall off of the fluorescent layer and long response time

Pending Publication Date: 2022-07-15
杭州凯米斯物联传感科技有限公司
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a preparation method of a dissolved oxygen sensing film head and a dissolved oxygen sensing film head, aiming to solve the problems of long response time and easy fall-off of the fluorescent layer in the sensing film head in the prior art

Method used

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  • Preparation method of dissolved oxygen sensing membrane head and dissolved oxygen sensing membrane head
  • Preparation method of dissolved oxygen sensing membrane head and dissolved oxygen sensing membrane head
  • Preparation method of dissolved oxygen sensing membrane head and dissolved oxygen sensing membrane head

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preparation example Construction

[0031] A preparation method of a dissolved oxygen sensing membrane head, comprising the following steps:

[0032] Preparation of fluorescent layer: Dissolve 18-22 parts by mass of the indicator in 0.8-1.2 parts by volume of tetrahydrofuran solution to obtain an indicator solution, and add the indicator solution to 18-22 parts by volume of 2wt% polyphenylene-containing solution under stirring In the emulsion of ethylene microspheres, stir for 50-70min to obtain the first mixed solution; then add 0.08-0.12 parts by volume of 0.1M calcium chloride aqueous solution to the first mixed solution, stir for 28-32min, and then ultrasonicate for 4-6min to obtain the second Mixed solution; pour the second mixed solution onto the quartz plate, volatilize at room temperature for 7.5-8.5 hours, and dry at 95-105° C. for 28-32 minutes to solidify to obtain a fluorescent layer; the 1 part by mass: 1 part by volume=1 mg: 1ml; wherein, the indicator is octaethylporphyrin platinum.

[0033] Prep...

Embodiment 2

[0052] This embodiment provides a dissolved oxygen sensing membrane head, which is prepared by the preparation method of a dissolved oxygen sensing membrane head described in any one of the embodiments of the first embodiment; including a quartz plate, a fluorescent layer, a light-reflecting layer and a light-shielding layer .

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Abstract

The invention provides a preparation method of a dissolved oxygen sensing membrane head and the dissolved oxygen sensing membrane head, and aims to solve the problems of long response time and easy falling of a fluorescent layer in the sensing membrane head in the prior art. The preparation method comprises the following steps: dissolving an indicator in a tetrahydrofuran solution to obtain an indicator solution, and adding the indicator solution into an emulsion of polystyrene microspheres while stirring; adding a calcium chloride aqueous solution, stirring, carrying out ultrasonic treatment, pouring onto a quartz plate, volatilizing, drying and curing to obtain a fluorescent layer; adding acrylic resin, styrene, ethyl acetate, xylene and organic silicone into a test tube, stirring and dissolving, spraying on the fluorescent layer, and drying to obtain a reflecting layer; dichloromethane, butyl acetate, polyacrylic resin, polystyrene, carbon black, paraformaldehyde, sulfonamide formaldehyde resin, simethicone, titanium dioxide powder, polyvinyl chloride, ethyl cellulose and stearic acid are mixed, stirred and dissolved, then sprayed to the reflecting layer and dried, and the shading layer is obtained. The fluorescent layer is not easy to elute.

Description

technical field [0001] The invention belongs to the technical field of dissolved oxygen sensors, and in particular relates to a preparation method of a dissolved oxygen sensing membrane head and a dissolved oxygen sensing membrane head. Background technique [0002] Dissolved oxygen sensor is a sensing device used to measure the dissolved amount of oxygen in water. The measurement of dissolved oxygen concentration in water plays an important role in water quality monitoring; in the prior art, when measuring dissolved oxygen, the dissolved oxygen is detected by fluorescence. Oxygen sensor, the sensing membrane head of this type of dissolved oxygen sensor mainly includes a water-permeable and breathable membrane, a fluorescent layer and a quartz plate; the fluorescent layer in the existing sensing membrane head is mostly obtained by coating / silane polymerization, which is easily eluted Affect the service life or limit the use of low-polarity indicators; in addition, the sensin...

Claims

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Application Information

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IPC IPC(8): G01N21/64B81C1/00
CPCG01N21/64B81C1/00349
Inventor 龚伟华王磊张猛
Owner 杭州凯米斯物联传感科技有限公司
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