CN104117396B - Liquid-transfering gun rifle head with super-hydrophobicity and preparation method thereof - Google Patents

Liquid-transfering gun rifle head with super-hydrophobicity and preparation method thereof Download PDF

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CN104117396B
CN104117396B CN201310150523.XA CN201310150523A CN104117396B CN 104117396 B CN104117396 B CN 104117396B CN 201310150523 A CN201310150523 A CN 201310150523A CN 104117396 B CN104117396 B CN 104117396B
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fiber
liquid
rifle head
transfering gun
gun rifle
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CN104117396A (en
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董智超
马杰
江雷
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Institute of Chemistry CAS
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Institute of Chemistry CAS
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Abstract

The invention belongs to biological detection, field of chemical detection, particularly to liquid-transfering gun rifle head with super-hydrophobicity and preparation method thereof.The liquid-transfering gun rifle head of commercialization is dipped in the coating solution being mixed to get by fluorinated polymer and inorganic nano-fiber and organic solvent, the most slowly pull out and be dried, the film being compounded to form by fluorinated polymer and inorganic nano-fiber on the surface of liquid-transfering gun rifle head is modified, and have the raised structures of the nano-scale being compounded to form by described fluorinated polymer and described inorganic nano-fiber on the surface of described film, thus obtain the liquid-transfering gun rifle head with super-hydrophobicity.The tube wall surface of this liquid-transfering gun rifle head with super-hydrophobicity is more than 170 ° to the contact angle of water droplet in atmosphere, rolling angle is less than 2 °, uses this to have the liquid-transfering gun rifle head of super-hydrophobicity and can get the minimum volume drop in picoliters rank in the case of need not complex instrument.

Description

Liquid-transfering gun rifle head with super-hydrophobicity and preparation method thereof
Technical field
The invention belongs to biological detection, field of chemical detection, particularly to the liquid-transfering gun rifle with super-hydrophobicity Head and preparation method thereof.
Background technology
The liquid-transfering gun rifle head with super-hydrophobicity is used to get the drop of nanoliter rank for chemical analysis, life Analyte detection, biomedicine field have highly important effect.There is the liquid-transfering gun rifle head of super-hydrophobicity Use can save the amount of detection liquid, particularly reduces the consumption of expensive drugs.Super hydrophobic material has The characteristic of adhesion low to water droplet, therefore uses the liquid-transfering gun rifle head with super-hydrophobicity to efficiently reduce The adhesiveness of the rifle head drop to getting.The use of this liquid-transfering gun rifle head with super-hydrophobicity is conducive to Drop leaves rifle head surface, it is possible to efficiently reduce the residual of rifle head surface drop so that the drop got Volume the most accurate.Additionally, compared to traditional liquid-transfering gun rifle head, use the shifting with super-hydrophobicity Drop need not be contacted by liquid rifle rifle head with orifice plate or liquid level, it is possible to increase the distribution speed of drop.Therefore How to find a kind of simple and effective method to obtain having the liquid-transfering gun rifle head of super-hydrophobicity and just become rifle head Production firm and analysis, experimenter institute questions of common interest.
Summary of the invention
An object of the present invention is to provide a kind of liquid-transfering gun rifle head with super-hydrophobicity.
The two of the purpose of the present invention are that providing a kind of liquid-transfering gun rifle head for modifying commercialization to become has The coating solution containing fluorinated polymer and inorganic nano-fiber of the liquid-transfering gun rifle head of super-hydrophobicity and system thereof Preparation Method.
The three of the purpose of the present invention are to provide the preparation method of a kind of liquid-transfering gun rifle head with super-hydrophobicity.
The liquid-transfering gun rifle head with super-hydrophobicity of the present invention is to be modified with by fluorine on the surface of liquid-transfering gun rifle head The film that fluidized polymer and inorganic nano-fiber are compounded to form, and have by described fluorine on the surface of described film The raised structures of the nano-scale that fluidized polymer and described inorganic nano-fiber are compounded to form.
The contact to water droplet in atmosphere of the tube wall surface of the liquid-transfering gun rifle head with super-hydrophobicity of the present invention Angle is more than 170 °, and rolling angle is less than 2 °.
The width of described film is not particularly limited, and generally 200 μm can the (point from liquid-transfering gun rifle head Hold the tail end to liquid-transfering gun rifle head).
Fluorinated polymer in the film that described fluorinated polymer and inorganic nano carbon fiber are compounded to form and nothing The weight ratio of machine nanofiber is 1:1~5:3.
Described fluorinated polymer selected from fluorinated polypropylene, Kynoar, fluorination polyisobutylene, poly-four One in fluorothene.
Described inorganic nano-fiber is selected from carbon nano-fiber, zinc oxide nano fiber, nano titania One in fiber.
Described carbon nano-fiber, zinc oxide nano fiber, titanium dioxide nanofiber fibre length all It it is 100nm to 2 μm.
The preparation method of the liquid-transfering gun rifle head with super-hydrophobicity of the present invention comprises the following steps:
(1) at room temperature, fluorinated polymer is mixed with inorganic nano-fiber and organic solvent, stirring, Obtain the coating solution containing fluorinated polymer Yu inorganic nano-fiber;Wherein, inorganic in coating solution The content of nanofiber is 5~30wt%, the content of fluorinated polymer is 5~50wt%, surplus is organic Solvent;
(2) the liquid-transfering gun rifle head of commercialization is dipped in the coating solution that step (1) obtains, keeps one Fix time, slowly pull out and be dried, by fluorinated polymer with inorganic on the surface of liquid-transfering gun rifle head is modified The film that nanofiber is compounded to form, and have by described fluorinated polymer with described on the surface of described film The raised structures of nano-scale that is compounded to form of inorganic nano-fiber, thus obtain that there is super-hydrophobicity Liquid-transfering gun rifle head.
Described organic solvent selected from methanol, ethanol, propanol, butanol, acetone, butanone, pentane, One in normal hexane, normal heptane, normal octane, benzene, toluene, oxolane, Carbon bisulfide.
The present invention for preparation have super-hydrophobicity liquid-transfering gun rifle head containing fluorinated polymer with inorganic The coating solution of nanofiber is made up of with inorganic nano-fiber and organic solvent fluorinated polymer, wherein: The content of inorganic nano-fiber is 5~30wt%, the content of fluorinated polymer is 5~50wt%, surplus is Organic solvent.
Described polymer is selected from fluorinated polypropylene, Kynoar, fluorination polyisobutylene, polytetrafluoroethyl-ne One in alkene.
Described inorganic nano-fiber is selected from carbon nano-fiber, zinc oxide nano fiber, nano titania One in fiber.
Described carbon nano-fiber, zinc oxide nano fiber, titanium dioxide nanofiber fibre length all It it is 100nm to 2 μm.
Described organic solvent selected from methanol, ethanol, propanol, butanol, acetone, butanone, pentane, One in normal hexane, normal heptane, normal octane, benzene, toluene, oxolane, Carbon bisulfide.
The liquid-transfering gun rifle head with super-hydrophobicity of the present invention is to repair on the surface of the liquid-transfering gun rifle head of commercialization Being decorated with the film being compounded to form by fluorinated polymer and inorganic nano-fiber, this film has with liquid-transfering gun rifle head material There is strong affinity, and there is good water resistant stream frictional behaviour.The present invention containing fluorinated polymer Coating solution with inorganic nano-fiber can directly spread over the surface of liquid-transfering gun rifle head, formed after film without Aftertreatment technology.This film has super-hydrophobicity (water and the contact angle of film are more than 170 ° in atmosphere), and In atmosphere water is had the characteristic of low adhesion less than 5 micro-cattle.Survey to the adhesion of water droplet in air Amount uses high sensitivity micro electro mechanical balance system (DataPhysics, DCAT11Germany). The water droplet metal cap of 3 microlitre sizes is fixed and in air atmosphere, with 0.005mms-1Speed controlling Water droplet and film surface contact squeeze, then set back, with the change of computer recording whole process power, And read the film surface adhesion in atmosphere to water droplet.
The present invention is inorganic by commercialization containing fluorinated polymer and the coating solution of inorganic nano-fiber Nanofiber and fluorinated polymer are dissolved according to a certain percentage and obtain in organic solvent.The present invention contains Fluorinated polymer is had to have good cohesive with the coating solution of inorganic nano-fiber with liquid-transfering gun rifle head material, And the existence of inorganic nano-fiber adds the water resistant stream frictional behaviour of liquid-transfering gun rifle head surface film, anti-friction Wiping performance to increase with the increase of the amount of inorganic nano-fiber, the surfacing of liquid-transfering gun rifle head is viscous with film Conjunction property increases, containing the painting of fluorinated polymer Yu inorganic nano-fiber with the increase of the amount of fluorinated polymer The viscosity of material solution increases along with the increase of fluorinated polymer amount.
The surface of the liquid-transfering gun rifle head with super-hydrophobicity of the present invention has by fluorinated polymer and inorganic nano The compound film formed of the coating solution of fiber, the microstructure of this film can capture substantial amounts of air, from And water and the contact area on coarse structure surface can be reduced, it is thus achieved that there is aerial super-hydrophobicity.
The surface of the liquid-transfering gun rifle head with super-hydrophobicity of the present invention has the characteristic of adhesion low to water droplet, Therefore use the liquid-transfering gun rifle head with super-hydrophobicity of the present invention that drop can be conducive to leave rifle head surface, The residual of rifle head surface drop can be efficiently reduced so that the volume of the drop got is the most accurate, makes Corpusculum can be got in the case of need not complex instrument with this liquid-transfering gun rifle head with super-hydrophobicity Amass the drop in picoliters rank.
Accompanying drawing explanation
Fig. 1. there is the liquid-transfering gun rifle head with super-hydrophobicity of super-hydrophobic coat on the surface of the embodiment of the present invention 1 A) the contrast optical photograph of the liquid-transfering gun rifle head b) of coating is not had with surface.
Fig. 2. the glass surface scribbling coating solution of the embodiment of the present invention 1 measures water droplet in atmosphere, and (3 is micro- Rise) the picture of contact angle, the contact angle on the surface of the film that water is formed at coating solution is more than 170 °.
Detailed description of the invention
Embodiment 1.
(1), under room temperature, adding 25g fibre length in 2L round-bottomed flask is the zinc oxide of 500nm Nanofiber, the fluorinated polypropylene of 25g and the oxolane of 400g, magnetic agitation mix homogeneously, To coating solution;
(2) the liquid-transfering gun rifle head of commercialization is dipped in the coating solution that step (1) obtains, keeps 5 Minute, slowly pull out and be dried, by fluorinated polypropylene and zinc oxide on the surface of liquid-transfering gun rifle head is modified The film that nanofiber is compounded to form, this film is more than 170 ° to the contact angle of water droplet in atmosphere, rolling angle Less than 1 °, the adhesion of water droplet is less than 5 micro-cattle;And have by fluorination poly-third on the surface of described film The raised structures of the nano-scale that alkene and zinc oxide nano fiber are compounded to form, thus obtains having super-hydrophobic The liquid-transfering gun rifle head of property.
Fig. 1 shows when using liquid-transfering gun (loading 0.5 10 μ L) to get 0.5 μ L drop, is clapped The surface taken the photograph has the liquid-transfering gun rifle head a) with super-hydrophobicity of super-hydrophobic coat and surface not to have the shifting of coating The contrast optical photograph of liquid rifle rifle head b).The surface of the liquid-transfering gun rifle head a) with super-hydrophobicity does not has liquid Residual, and surface does not has the outer surface of liquid-transfering gun rifle head b) of coating to have the residual of liquid.
Fig. 2 shows and measures water droplet (3 in atmosphere after coating solution obtained above is coated in glass surface Microlitre) contact angle, the contact angle on the surface of the film that water is formed at coating solution is more than 170 °.
Embodiment 2.
(1), under room temperature, adding 150g fibre length in 2L round-bottomed flask is the titanium dioxide of 600nm Titanium nanofiber, the Kynoar of 250g and the toluene of 100g, magnetic agitation mix homogeneously, obtain Coating solution;
(2) the liquid-transfering gun rifle head of commercialization is dipped in the coating solution that step (1) obtains, keeps 5 Minute, slowly pull out and be dried, by Kynoar and titanium dioxide on the surface of liquid-transfering gun rifle head is modified The film (width of film is 200 μm) that titanium nanofiber is compounded to form;And have on the surface of described film by The raised structures of the nano-scale that Kynoar and titanium dioxide nanofiber are compounded to form, thus obtains There is the liquid-transfering gun rifle head of super-hydrophobicity.
Embodiment 3.
(1), under room temperature, adding 150g fibre length in 2L round-bottomed flask is the titanium dioxide of 800nm Titanium nanofiber, the fluorination polyisobutylene of 250g and the toluene of 100g, magnetic agitation mix homogeneously, To coating solution;
(2) the liquid-transfering gun rifle head of commercialization is dipped in the coating solution that step (1) obtains, keeps 5 Minute, slowly pull out and be dried, by fluorination polyisobutylene and dioxy on the surface of liquid-transfering gun rifle head is modified Change the film that titanium nanofiber is compounded to form;And have by fluorination polyisobutylene and dioxy on the surface of described film Change the raised structures of the nano-scale that titanium nanofiber is compounded to form, thus obtain the shifting with super-hydrophobicity Liquid rifle rifle head.
Embodiment 4.
(1), under room temperature, 2L round-bottomed flask adds the carbon nanometer that 100g fibre length is 100nm Fiber, the fluorination polyisobutylene of 100g and the toluene of 300g, magnetic agitation mix homogeneously, obtain coating Solution;
(2) the liquid-transfering gun rifle head of commercialization is dipped in the coating solution that step (1) obtains, keeps 5 Minute, slowly pull out and be dried, being received with carbon by fluorination polyisobutylene on the surface of liquid-transfering gun rifle head is modified The film that rice fiber composite is formed;And have by fluorination polyisobutylene and carbon nano-fiber on the surface of described film The raised structures of the nano-scale being compounded to form, thus obtains the liquid-transfering gun rifle head with super-hydrophobicity.
Embodiment 5.
(1), under room temperature, 2L round-bottomed flask adds the carbon Nanowire that 200g fibre length is 1 μm Dimension, the politef of 100g and the toluene of 300g, magnetic agitation mix homogeneously, obtain coating solution;
(2) the liquid-transfering gun rifle head of commercialization is dipped in the coating solution that step (1) obtains, keeps 5 Minute, slowly pull out and be dried, by politef and carbon nanometer on the surface of liquid-transfering gun rifle head is modified The film that fiber composite is formed;And have on the surface of described film and to be combined with carbon nano-fiber by politef The raised structures of the nano-scale formed, thus obtains the liquid-transfering gun rifle head with super-hydrophobicity.
Embodiment 6.
(1), under room temperature, 2L round-bottomed flask adds the titanium dioxide that 200g fibre length is 1 μm Nanofiber, the politef of 150g and the toluene of 250g, magnetic agitation mix homogeneously, it is coated with Material solution;
(2) the liquid-transfering gun rifle head of commercialization is dipped in the coating solution that step (1) obtains, keeps 5 Minute, slowly pull out and be dried, by politef and titanium dioxide on the surface of liquid-transfering gun rifle head is modified The film that titanium nanofiber is compounded to form;And have by politef and titanium dioxide on the surface of described film The raised structures of the nano-scale that nanofiber is compounded to form, thus obtains the liquid-transfering gun with super-hydrophobicity Rifle head.

Claims (9)

1. there is a liquid-transfering gun rifle head for super-hydrophobicity, it is characterized in that: repair on the surface of liquid-transfering gun rifle head Be decorated with the film being compounded to form by fluorinated polymer and inorganic nano-fiber, and have on the surface of described film by The raised structures of the nano-scale that described fluorinated polymer and described inorganic nano-fiber are compounded to form;
Fluorinated polymer in the film that described fluorinated polymer and inorganic nano-fiber are compounded to form is with inorganic The weight ratio of nanofiber is 1:1~5:3.
The liquid-transfering gun rifle head with super-hydrophobicity the most according to claim 1, is characterized in that: described Fluorinated polymer in fluorinated polypropylene, Kynoar, fluorination polyisobutylene, the politef One.
The liquid-transfering gun rifle head with super-hydrophobicity the most according to claim 1, is characterized in that: described Inorganic nano-fiber in carbon nano-fiber, zinc oxide nano fiber, the titanium dioxide nanofiber A kind of.
The liquid-transfering gun rifle head with super-hydrophobicity the most according to claim 3, is characterized in that: described Carbon nano-fiber, zinc oxide nano fiber, the fibre length of titanium dioxide nanofiber be all 100nm To 2 μm.
5. one kind according to the liquid-transfering gun rifle head with super-hydrophobicity described in Claims 1 to 4 any one Preparation method, is characterized in that, described preparation method comprises the following steps:
(1) at room temperature, fluorinated polymer is mixed with inorganic nano-fiber and organic solvent, stirring, Obtain the coating solution containing fluorinated polymer Yu inorganic nano-fiber;Wherein, inorganic in coating solution The content of nanofiber is 5~30wt%, the content of fluorinated polymer is 5~50wt%, surplus is organic Solvent;
(2) liquid-transfering gun rifle head is dipped in the coating solution that step (1) obtains, pulls out and be dried, The film being compounded to form by fluorinated polymer and inorganic nano-fiber in the surface modification of liquid-transfering gun rifle head, and The surface of described film has by described fluorinated polymer and receiving that described inorganic nano-fiber is compounded to form The raised structures of meter ruler cun, obtains the liquid-transfering gun rifle head with super-hydrophobicity.
Preparation method the most according to claim 5, is characterized in that, described organic solvent is selected from first Alcohol, ethanol, propanol, butanol, acetone, butanone, pentane, normal hexane, normal heptane, normal octane, One in benzene, toluene, oxolane, Carbon bisulfide.
7. there is for preparation a coating solution for the liquid-transfering gun rifle head of super-hydrophobicity, it is characterized in that: institute The coating solution stated is made up of with inorganic nano-fiber and organic solvent fluorinated polymer, wherein: inorganic The content of nanofiber is 5~30wt%, the content of fluorinated polymer is 5~50wt%, surplus is organic Solvent.
Coating solution the most according to claim 7, is characterized in that: described polymer is selected from fluorination One in polypropylene, Kynoar, fluorination polyisobutylene, politef;
Described inorganic nano-fiber is selected from carbon nano-fiber, zinc oxide nano fiber, nano titania One in fiber.
Coating solution the most according to claim 8, is characterized in that: described carbon nano-fiber, oxygen Change zinc nanofiber, the fibre length of titanium dioxide nanofiber is all 100nm to 2 μm.
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CN108722511A (en) * 2018-08-09 2018-11-02 中国标准化研究院 Draw the liquid-transfering gun pipette tips and preparation method thereof of thick liquid
CN109354771A (en) * 2018-10-25 2019-02-19 嘉兴齐越医疗器械有限公司 Filling-modified PP material and its application
CN110180613B (en) * 2019-06-27 2020-02-14 电子科技大学 Liquid-transfering gun based on surface charge
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