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Pipette tip for sucking viscous liquid and preparation method thereof

A technology for viscous liquids and pipettes, which is applied in measuring tubes/pipettes, chemical instruments and methods, and laboratory containers. Reduced accuracy and other issues, to achieve the effect of improving practical value, convenient observation, and accurate volume

Pending Publication Date: 2018-11-02
CHINA NAT INST OF STANDARDIZATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The pipette gun is a kind of pipette, which is often used for pipetting a small amount or a small amount of liquid in the laboratory. Pipette guns of different specifications use different sizes of pipette tips. However, after the pipette tip is pumped out, it will The liquid left on the tip of the gun causes waste and affects the accuracy of the liquid
Especially for viscous liquids, more will be left on the tip of the pipette, and the accuracy of liquid discharge will be greatly reduced. When using a pipette gun, the viscous liquid can only be pumped out when the droplet is in contact with the orifice or the page, reducing Improve the droplet distribution efficiency and increase the experiment time

Method used

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  • Pipette tip for sucking viscous liquid and preparation method thereof
  • Pipette tip for sucking viscous liquid and preparation method thereof
  • Pipette tip for sucking viscous liquid and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) At room temperature of 25°C, using xylene as a solvent, 15% of the mass fraction of nano-silica with a particle diameter of 50nm and 20% of the mass fraction of aminoacrylic acid resin are mixed at high speed to obtain aminoacrylic resin containing Coating solution with nano silica.

[0025] (2) Spray the coating solution that step (1) obtains evenly on the inner and outer surfaces of the pipette tip with a sprayer, and put the pipette tip after the spraying into a drying box to dry naturally, so that the pipette gun The inner and outer surfaces of the head have nanometer-sized protruding structures formed by compounding the aminoacrylic resin and nano silicon dioxide.

[0026] (3) Use a sprayer to spray a thin layer of tridecafluorooctyltriethoxysilane solution on the inner and outer surfaces of the pipette tip dried in step (2), and put it in an oven after standing for 30 minutes, at 60°C After curing for 2 hours, a superhydrophobic and oleophobic coating with go...

Embodiment 2

[0030] (1) At room temperature of 25°C, using acetate as a solvent, mix 20% of the mass fraction of nano-titanium dioxide with a particle size of 300nm and 30% of the mass fraction of aminoacrylic resin under high-speed shearing and stirring to obtain a mixture containing aminoacrylic resin and nano Coating solution of titanium dioxide.

[0031] (2) Spray the coating solution that step (1) obtains evenly on the inner and outer surfaces of the pipette tip with a sprayer, and put the pipette tip after the spraying into a drying box to dry naturally, so that the pipette gun The inner and outer surfaces of the head have nanometer-sized protruding structures formed by compounding aminoacrylic resin and nano-titanium dioxide.

[0032] (3) Spray a thin layer of perfluorodecyltriethoxysilane solution on the inner and outer surfaces of the pipette tip dried in step (2) with a sprayer, put it in an oven after standing for 30 minutes, and cure at 60°C After 2 hours, a superhydrophobic a...

Embodiment 3

[0034] (1) At room temperature of 25°C, using butanol as a solvent, the nano-zinc oxide with a mass fraction of 15% of a particle diameter of 500nm and the aminoacrylic resin with a mass fraction of 40% are mixed under high-speed shear to obtain a mixture containing aminoacrylic resin and Coating solution of nano zinc oxide.

[0035] (2) Spray the coating solution obtained in step (1) evenly on the inner and outer surfaces of the pipette tip with a sprayer, and put the sprayed pipette tip into a drying oven to dry naturally. Therefore, the inner and outer surfaces of the tip of the pipette have a nanometer-sized protrusion structure formed by compounding the aminoacrylic resin and nano-zinc oxide.

[0036] (3) Spray a thin layer of perfluorodecyltriethoxysilane solution on the inner and outer surfaces of the pipette tip dried in step (2) with a sprayer, put it in an oven after standing for 30 minutes, and cure at 60°C After 2 hours, a superhydrophobic and oleophobic coating w...

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Abstract

The invention discloses a pipette tip for sucking viscous liquid. The pipette tip for sucking viscous liquid comprises a pipette tip body which is of a hollow tubular structure, and further comprisesa composite layer and a hydrophobic oil layer. The composite layer is arranged on the surface of the inner and outer tube walls of the pipette tip body, the composite layer comprises an amino acrylicresin and inorganic nano-particles; the surface of the composite layer has a nano-sized protruding structure formed by combining the amino acrylic resin and the inorganic nano-particles; the hydrophobic oil layer is arranged on the composite layer, and the hydrophobic oil layer comprises fluoroalkyl silane. The invention also discloses a preparation method of a pipette tip for sucking viscous liquid. The pipette tip for sucking viscous liquid disclosed the invention not only has good hydrophobicity, but also has oleophobicity, and is mainly used for sucking viscous liquid, effectively reducingthe residue of droplets on the surface of the tip, so that the volume of the droplets dropped is more precise; the spraying method is used to distribute the inorganic nano-particles evenly and make the coating thickness uniform, which is suitable for large-scale standardized production.

Description

technical field [0001] The invention relates to a pipette tip and a preparation method thereof, in particular to a pipette tip for absorbing viscous liquid and a preparation method thereof. Background technique [0002] No matter in ordinary laboratories or research laboratories, measuring instruments are necessary instruments in biochemical analysis, and the accuracy of their use directly affects the test results. In the process of operation, the first thing that the operator thinks of is an appliance with high precision, full functions and easy use. [0003] The pipette gun is a kind of pipette, which is often used for pipetting a small amount or a small amount of liquid in the laboratory. Pipette guns of different specifications use different sizes of pipette tips. However, after the pipette tip is pumped out, it will The liquid left on the tip of the gun causes waste and affects the accuracy of the liquid. Especially for viscous liquids, more will be left on the tip of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01L3/02
CPCB01L3/0213B01L3/0275B01L2200/12B01L2300/12
Inventor 赵琳兰韬吴琦云振宇刘文宋瑞瑞
Owner CHINA NAT INST OF STANDARDIZATION
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