WO2016029530A1 - Capteur de dioxyde de carbone basé sur des réseaux de fibres theed et son procédé de préparation - Google Patents

Capteur de dioxyde de carbone basé sur des réseaux de fibres theed et son procédé de préparation Download PDF

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Publication number
WO2016029530A1
WO2016029530A1 PCT/CN2014/088111 CN2014088111W WO2016029530A1 WO 2016029530 A1 WO2016029530 A1 WO 2016029530A1 CN 2014088111 W CN2014088111 W CN 2014088111W WO 2016029530 A1 WO2016029530 A1 WO 2016029530A1
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Prior art keywords
theed
pcb board
carbon dioxide
micro
nano
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PCT/CN2014/088111
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English (en)
Chinese (zh)
Inventor
陈然
阮晓东
刘伟庭
傅新
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浙江大学
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Application filed by 浙江大学 filed Critical 浙江大学
Publication of WO2016029530A1 publication Critical patent/WO2016029530A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid

Definitions

  • the invention relates to the field of carbon dioxide sensors, in particular to a carbon dioxide sensor based on THEED (N, N, N', N'-tetrahydroxyethyl ethylene diamine) fiber array and a preparation method thereof.
  • THEED N, N, N', N'-tetrahydroxyethyl ethylene diamine
  • the object of the present invention is to provide a carbon dioxide sensor based on THEED fiber array and a preparation method thereof according to the deficiencies of the prior art.
  • a carbon dioxide sensor based on THEED fiber array comprising a PCB board substrate, at least one pair of equidistantly arranged electrodes on the PCB board substrate; two opposite sides
  • the PCB board substrate between the electrodes is hollowed out with a pitch of 5-10 mm; the PCB board substrate and the electrodes constitute a sensing unit PCB board; and each pair of electrodes is connected with a plurality of directed and non-intersecting carbon dioxide sensitive micro/nano fibers; the carbon dioxide is sensitive
  • the micro-nano fiber is composed of a THEED polymer micro-nano fiber and a nickel-chromium alloy film resistive layer attached to the surface of the THEED polymer micro-nano fiber.
  • a method for preparing a carbon dioxide sensor based on the THEED fiber array comprising the following steps:
  • the catheter is connected to the micro-injection pump, and the conductive part of the electrospinning needle is connected with the high-pressure source;
  • the THEED solution is fed at a rate of 6-10 ml/h through a micro-injection pump, the high-voltage source is adjusted to 10-12 KV, and the linear high-speed mobile station is operated to 5 -10mm / s speed laterally uniform motion, to obtain the directional density controllable THEED polymer micro-nano fiber array;
  • the invention has the beneficial effects that the invention adopts the electrospinning and magnetron sputtering method, and combines the linear high-speed mobile station feeding to realize the preparation of the directed hydrogen-sensitive micro-nano fiber array; the whole preparation process is short in time and consumes less energy. High efficiency; only a small amount of polymer solution and target are used in materials, and the material cost is low; by adjusting the feed speed of the linear high-speed mobile station, the density of the directed micro-nano fiber array can be freely controlled; by solvent parameters and operating parameters The adjustment can more precisely control the diameter of the directed micro-nano fiber array; by adjusting the sputtering parameters, the thickness of the thin film resistive layer can be adjusted.
  • FIG. 1 is a schematic view of an apparatus for electrospinning a THEED polymer micro/nano fiber array
  • FIG. 2 is a schematic structural view of a PCB of a sensing unit
  • Figure 3 is a schematic diagram of a linear feed electrode pair electrospinning method
  • FIG. 4 is a schematic structural view of a carbon dioxide sensor based on a THEED fiber array
  • Figure 5 is a schematic view showing the structure of a carbon dioxide sensitive micro/nano fiber array
  • sensor unit PCB board 1 linear high speed mobile station 2, bracket 3, high voltage source 4, electrospinning needle 5, solution delivery catheter 6, micro syringe pump 7, electrode 8, PCB board substrate 9, THEED polymer Micro-nano fiber 10, carbon dioxide-sensitive micro-nano fiber 11, and nickel-chromium alloy film resistive layer 12.
  • the THEED polymer micro-nano fiber array electrospinning preparation platform consists of a sensing unit PCB board 1, a linear high-speed moving table 2, a bracket 3, a high-voltage source 4, an electrospinning needle 5, a solution conveying conduit 6 and The microinjection pump 7 is composed.
  • the sensing unit PCB board 1 is mounted on the linear high-speed moving table 2, and the electrode 8 is grounded; the bracket 3 is placed directly above the linear high-speed moving table 2, and the electrospinning needle 5 is mounted on the bracket 3 to adjust the electrospinning needle
  • the height and position of 5 are such that the front end thereof is perpendicular to the center line of the sensing unit PCB board 1, and the rear end of the electrospinning needle 5 is connected to the micro syringe pump 7 through the solution delivery conduit 6.
  • the conductive portion of the electrospinning needle 5 is connected to the high voltage source 4; finally, the THEED solution is fed by the microinjection pump 7 at a speed of 6-10 ml/h, the high voltage source is adjusted to 4 to 10-12 KV, and the computer operates the linear high speed mobile station 2 to The 5-10mm/s speed moves at a uniform speed in the transverse direction. At the end of the stroke, an array of THEED polymer micro/nano fibers 10 with controlled directional density is obtained.
  • the preparation process of the THEED solution is as follows: The THEED particles are added to a solvent of chloroform at room temperature, and stirred to obtain a THEED solution having a mass fraction of 20% to 30%.
  • the sensing unit PCB board 1 is composed of a PCB board substrate 9 and electrodes 8, and at least one pair of equidistantly arranged electrodes 8 are provided on the PCB board substrate 9, preferably 4 pairs;
  • the PCB board substrate 9 between the electrodes 8 is hollowed out with a pitch of 5-10 mm.
  • the principle of the electrospinning method for the linear feed electrode is as follows: the high voltage source 4 provides a potential of 10 kV during spinning, and the electric field is generated by the electrospinning needle 5 pointing to the grounded electrode 8 on the surface, and the THEED solution is electrospun.
  • the charge at the needle 5 is moved along the electric field line to one side of the pair of electrodes 8; when the solution contacts the electrode 8, the electrode 8 in contact with the solution is instantaneously charged due to the influence of the charge of the solution, and the electric field is deflected, causing the solution to be At the same time, the linear high-speed mobile station 2 drives the electrode 8 to move in the direction of the vertical electric field; after the solution leaves the electrospinning needle 5, the solvent evaporates in the air to cause the solute to solidify, forming a directed THEED between the electrodes 8 10 arrays of polymeric micro/nanofibers.
  • the sensing unit PCB board 1 is sent into the magnetron sputtering machine cavity, and the mask board is covered on the surface of the sensing unit PCB board 1.
  • the mask board blocks the electrode 9 and the PCB board substrate 9, and the THEED polymer micro-nano
  • the array of fibers 10 is partially sputtered to obtain a nickel-chromium alloy film resistive layer 12 having a single-sided thickness of 50-80 nm; cooling and drying to realize preparation of a carbon dioxide sensor based on THEED fiber array.
  • the resulting carbon dioxide sensor based on THEED polymer micro/nano fiber array is shown in Figure 4.
  • a plurality of directional and non-intersecting carbon dioxide-sensitive micro-nano fibers 11 are connected between each pair of electrodes 8, and the carbon dioxide-sensitive micro-nano fibers 11 are made of THEED polymer micro-nano fibers 10 and nickel-chromium alloys attached to the surface of the THEED polymer micro-nano fibers 10.
  • the thin film resistive layer 12 is composed of a THEED polymer micro/nano fiber 10 as a main sensitive material, and a nickel-chromium alloy thin film resistive layer 12 as a signal conversion medium. When contacted with carbon dioxide, the volume of the THEED polymer micro/nano fiber 10 changes, resulting in nickel. The resistance value of the chrome alloy film resistive layer 12 is changed, and the carbon dioxide concentration is detected by measuring the resistance value.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

L'invention concerne un capteur de dioxyde de carbone basé sur des réseaux de fibres THEED et son procédé de préparation. Dans le procédé de préparation, par pulvérisation d'une solution de polymère par un dispositif de filage électrostatique en combinaison avec une alimentation par une table se déplaçant à une grande vitesse linéaire (2), le filage de réseaux de microfibres/nanofibres de polymère THEED orientées à densité contrôlable est obtenu ; ensuite, par modification d'une couche de résistance d'un film mince d'alliage de nickel et de chrome par le biais d'une pulvérisation magnétron, le capteur de dioxyde de carbone basé sur des réseaux de fibres THEED est obtenu. Dans le procédé de préparation, seule une petite quantité de solution de polymère et de matériau cible est utilisée, le matériau ayant un faible coût ; en ajustant la vitesse d'alimentation de la table se déplaçant à une grande vitesse linéaire, la densité des réseaux de microfibres/nanofibres orientées peut être librement contrôlée ; en ajustant les paramètres de solvant et les paramètres de fonctionnement, le diamètre des microfibres/nanofibres orientées peut être contrôlé avec plus de précision ; et en ajustant les paramètres de pulvérisation cathodique, l'ajustement de l'épaisseur de la couche de résistance en film mince peut être obtenu.
PCT/CN2014/088111 2014-08-25 2014-10-08 Capteur de dioxyde de carbone basé sur des réseaux de fibres theed et son procédé de préparation WO2016029530A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410422521.6A CN104215668A (zh) 2014-08-25 2014-08-25 基于theed纤维阵列的二氧化碳传感器及其制备方法
CN201410422521.6 2014-08-25

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WO2016029530A1 true WO2016029530A1 (fr) 2016-03-03

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CN111321475A (zh) * 2020-04-17 2020-06-23 中广核达胜加速器技术有限公司 一种无机纤维原丝纺丝***及其纺丝方法
CN114734452B (zh) * 2022-05-17 2024-02-23 浙江理工大学 一种基于压阻信号的机械臂碰撞监测方法
CN114808279B (zh) * 2022-05-20 2023-06-27 俞平 汽车坐垫用织物传感阵列的制造方法及产品

Citations (6)

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CN1065527A (zh) * 1991-04-05 1992-10-21 明尼苏达州采矿制造公司 以毫微结构复合膜为基的传感器
US20080101994A1 (en) * 2006-10-28 2008-05-01 Shabnam Virji Polyaniline Nanofiber Hydrogen Sensors
US20090101501A1 (en) * 2007-10-17 2009-04-23 Tao Xiao-Ming Room temperature gas sensors
CN101563599A (zh) * 2006-12-22 2009-10-21 研究三角协会 聚合物纳米纤维基电子鼻
CN103336092A (zh) * 2013-06-14 2013-10-02 浙江大学 基于涡街与压电薄膜的氢气传感器及其制备方法
CN103344673A (zh) * 2013-06-14 2013-10-09 浙江大学 基于微纳纤维的氢气传感器及其制备方法

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EP1461360B1 (fr) * 2002-01-03 2010-08-18 Bayer Schering Pharma Aktiengesellschaft Conjugues comprenant un anticorps specifique du domaine ed-b de la fibronectine et leur utilisation pour detecter et traiter les tumeurs
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CN1065527A (zh) * 1991-04-05 1992-10-21 明尼苏达州采矿制造公司 以毫微结构复合膜为基的传感器
US20080101994A1 (en) * 2006-10-28 2008-05-01 Shabnam Virji Polyaniline Nanofiber Hydrogen Sensors
CN101563599A (zh) * 2006-12-22 2009-10-21 研究三角协会 聚合物纳米纤维基电子鼻
US20090101501A1 (en) * 2007-10-17 2009-04-23 Tao Xiao-Ming Room temperature gas sensors
CN103336092A (zh) * 2013-06-14 2013-10-02 浙江大学 基于涡街与压电薄膜的氢气传感器及其制备方法
CN103344673A (zh) * 2013-06-14 2013-10-09 浙江大学 基于微纳纤维的氢气传感器及其制备方法

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Title
CAO, ZHONG ET AL.: "Studies on Coated Piezoelectric Crystal Carbon Dioxide Sensor", JOURNAL OF HUNAN UNIVERSITY, vol. 23, no. 6, 31 December 1996 (1996-12-31), pages 58 - 63, ISSN: 1674-2974 *

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