CN113528009A - Conductive and antistatic liquid and preparation method thereof - Google Patents

Conductive and antistatic liquid and preparation method thereof Download PDF

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CN113528009A
CN113528009A CN202110890717.8A CN202110890717A CN113528009A CN 113528009 A CN113528009 A CN 113528009A CN 202110890717 A CN202110890717 A CN 202110890717A CN 113528009 A CN113528009 A CN 113528009A
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walled carbon
silica gel
mass
color paste
carbon nanotube
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陈艳芳
尹峰
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Suzhou Naplus Nano Materials Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
    • C09D183/04—Polysiloxanes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/24—Electrically-conducting paints
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/80—Processes for incorporating ingredients
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/001—Conductive additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/017—Additives being an antistatic agent
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/04—Antistatic

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  • Engineering & Computer Science (AREA)
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Abstract

The invention discloses a conductive and antistatic liquid and a preparation method thereof, and the conductive and antistatic liquid comprises a single-walled carbon nanotube, silica gel, a solvent and color paste, wherein the share of the single-walled carbon nanotube is 5-40%, the share of the silica gel is 10-40%, the share of the solvent is 10-54.9%, the share of the color paste is 0.1-10%, the content of single-walled carbon nano powder in the single-walled carbon nanotube is 0.4%, a platinum catalyst is contained in the silica gel, the single-walled carbon nanotube is single-walled carbon nanotube powder or single-walled carbon nanotube dispersion liquid, and the content of the single-walled carbon nanotube accounts for 5-40% by mass, preferably 10-30% by mass, and more preferably 15-25% by mass. According to the conductive and antistatic liquid and the preparation method thereof, the silica gel antistatic coatings with different colors can be formed through high-temperature curing, the antistatic effect is excellent, the surface resistance can reach 106-109 omega, and the antistatic liquid can be prepared into antistatic coatings with different colors and has excellent antistatic performance.

Description

Conductive and antistatic liquid and preparation method thereof
Technical Field
The invention relates to the field of static prevention, in particular to a conductive and static-prevention liquid and a preparation method thereof.
Background
The carbon nano tube is a one-dimensional tubular structure nano material combined by carbon-carbon covalent bonds, has super strong mechanical, electrical and heat conduction properties, theoretically calculates that the tensile strength of the carbon nano tube can reach 150GPa, the elastic modulus is 1TPa, is 100 times that of steel, has the density of only 1/6, is known as ultimate carbon fiber, and has the carrier concentration of 109A/cm2, which is 1000 times that of copper. In combination with the super-large length-diameter ratio, particularly the super-low conductivity threshold value is 1-2 orders of magnitude lower than that of the traditional carbon black, and the conductive filler has excellent stability and is the most superior conductive filler at present. Compared with graphene, the carbon nanotube structure is more controllable, controllable preparation can be realized from the multi-wall carbon nanotube to the single-wall carbon nanotube, and a conductive path is easier to form due to a large length-diameter ratio. The one-dimensional network structure formed based on the method has a lower conductive threshold value and more stable conductive stability, and can withstand large-size deformation and maintain better conductive stability. The conductive threshold of the carbon nano tube is only 1/5-1/10 of graphene generally, the light transmittance of the carbon nano tube can reach more than 98%, and along with the continuous development of science and technology, the requirements of people on the manufacturing process of the antistatic liquid are higher and higher.
The existing antistatic liquid has certain disadvantages when in use, the carbon nano tube is widely applied to the antistatic field due to the excellent conductivity, the electrostatic value is stable, compared with an antistatic agent such as ionic liquid, the antistatic performance of the carbon nano tube does not depend on the change of humidity, compared with conductive high polymer pedot/pss, the carbon nano tube is not easy to be oxidized, the resistance is high, the antistatic performance is poor, the use of people is not facilitated, and certain adverse effects are brought to the use process of people.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the conductive and antistatic liquid and the preparation method thereof, silica gel antistatic coatings with different colors can be formed through high-temperature curing, the antistatic effect is excellent, the surface resistance can reach 106-.
(II) technical scheme
In order to achieve the purpose, the invention adopts the technical scheme that: the conductive and antistatic liquid comprises a single-walled carbon nanotube, silica gel, a solvent and color paste, wherein the share of the single-walled carbon nanotube is 5-40%, the share of the silica gel is 10-40%, the share of the solvent is 10-54.9%, the share of the color paste is 0.1-10%, the content of single-walled carbon nano powder in the single-walled carbon nanotube is 0.4%, and a platinum catalyst is contained in the silica gel.
As a preferable technical scheme, the single-walled carbon nanotube is single-walled carbon nanotube powder or single-walled carbon nanotube dispersion liquid, and the content of the single-walled carbon nanotube accounts for 5-40% by mass, preferably 10-30% by mass, and more preferably 15-25% by mass.
As a preferable technical scheme, the silica gel is an organopolysiloxane, and is a high-molecular elastomer with-Si-O-as a main chain and organic groups as side chains.
As a preferable technical scheme, the silica gel needs a platinum catalyst for thermal curing, the thermal curing temperature of the silica gel is generally 60-400 ℃, and the content of the silica gel accounts for 10-40% by mass, preferably 15-35% by mass, and more preferably 20-30% by mass.
As a preferred technical scheme, the color paste can be an oily color paste or an aqueous color paste, and the content of the color paste accounts for 0.1-10% by mass, preferably 1-8% by mass, and more preferably 3-5% by mass.
As a preferred technical scheme, the solvent can be one or a mixture of two or more of water, alcohol, ester or aromatic hydrocarbon, and the content of the solvent accounts for 10-54.9% by mass, preferably 15-45% by mass, and more preferably 20-40% by mass.
A preparation method of a conductive and antistatic liquid comprises the following operation steps:
s1: preparation of materials: preparing a certain amount of single-walled carbon nanotubes, silica gel, a solvent and color paste, filling the mixture into a specified container with scales, and proportioning;
s2: grinding and mixing: taking out the single-walled carbon nanotubes, introducing the single-walled carbon nanotubes into a grinding bowl, simultaneously putting silica gel, and dispersing the single-walled carbon nanotubes in the silica gel through grinding;
s3: color paste mixing: carrying out high-speed shearing operation on the color paste, and dispersing the color paste in the silica gel dispersion liquid of the single-walled carbon nanotube by high-speed shearing;
s4: stirring and mixing: adding a diluent solvent into the dispersion liquid, and uniformly stirring;
s5: and (3) thermosetting molding: the coating is coated on plastic base materials such as PET, PE and the like in the modes of roll coating, blade coating, spraying and the like, and the silica gel antistatic coating with different colors is formed through thermocuring.
As a preferable technical scheme, in the step S2, the single-walled carbon nanotubes are uniformly dispersed in the silica gel by a grinding dispersion method, and in the step S3, the color paste is uniformly dispersed in the silica gel dispersion liquid of the single-walled carbon nanotubes by a high-speed shearing dispersion method.
(III) advantageous effects
Compared with the prior art, the invention provides a conductive and antistatic liquid and a preparation method thereof, and the conductive and antistatic liquid has the following beneficial effects: the conductive and antistatic liquid and the preparation method thereof can form silica gel antistatic coatings with different colors through high-temperature curing, have excellent antistatic effect, surface resistance of 106 plus 109 omega, can be prepared into antistatic coatings with different colors and simultaneously have excellent antistatic performance, a certain amount of single-walled carbon nanotubes, silica gel, solvent and color paste are prepared and put into a specified container with scales for proportioning, the single-walled carbon nanotubes are taken out and led into a grinding pot, the silica gel is put into the grinding pot at the same time, the single-walled carbon nanotubes are dispersed in the silica gel through grinding, the color paste is subjected to high-speed shearing operation, the color paste is dispersed in the silica gel dispersion liquid of the single-walled carbon nanotubes through high-speed shearing, a diluent solvent is added into the dispersion liquid, the mixture is uniformly stirred, and is coated on plastic substrates such as PET, PE and the like through roll coating, blade coating, spraying and the like, and is thermally cured, the silica gel antistatic coating with different colors is formed, the whole antistatic liquid is simple in structure and convenient to operate, and the using effect is better than that of the traditional mode.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment-an embodiment six in the conductive and antistatic liquid and the preparation method thereof of the present invention.
Fig. 2 is a schematic structural diagram of a conductive and antistatic liquid and a preparation method thereof according to the seventh embodiment to the twelfth embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings and the detailed description, but those skilled in the art will understand that the following described embodiments are some, not all, of the embodiments of the present invention, and are only used for illustrating the present invention, and should not be construed as limiting the scope of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
The conductive and antistatic liquid comprises a single-walled carbon nanotube, silica gel, a solvent and color paste, wherein the content of the single-walled carbon nanotube is 5-40%, the content of the silica gel is 10-40%, the content of the solvent is 10-54.9%, the content of the color paste is 0.1-10%, the content of single-walled carbon nano powder in the single-walled carbon nanotube is 0.4%, and a platinum catalyst is contained in the silica gel.
The single-walled carbon nanotube is single-walled carbon nanotube powder or single-walled carbon nanotube dispersion liquid, and the content of the single-walled carbon nanotube accounts for 5-40% by mass, preferably 10-30% by mass, and more preferably 15-25% by mass.
Silica gel is a kind of organic polysiloxane, and is a kind of high molecular elastomer with-Si-O-as main chain and organic radical as side chain.
The platinum catalyst is needed for the silica gel heat curing, the silica gel heat curing temperature is generally 60-400 ℃, and the silica gel content accounts for 10-40% by mass, preferably 15-35% by mass, and more preferably 20-30% by mass.
The color paste can be oil color paste or water color paste, and the color paste accounts for 0.1-10% by mass, preferably 1-8% by mass, and more preferably 3-5% by mass.
The solvent can be one or a mixture of two or more of water, alcohol, ester or aromatic hydrocarbon, and the content of the solvent accounts for 10-54.9% by mass, preferably 15-45% by mass, and more preferably 20-40% by mass.
A preparation method of a conductive and antistatic liquid comprises the following operation steps:
s1: preparation of materials: preparing a certain amount of single-walled carbon nanotubes, silica gel, a solvent and color paste, filling the mixture into a specified container with scales, and proportioning;
s2: grinding and mixing: taking out the single-walled carbon nanotubes, introducing the single-walled carbon nanotubes into a grinding bowl, simultaneously putting silica gel, and dispersing the single-walled carbon nanotubes in the silica gel through grinding;
s3: color paste mixing: carrying out high-speed shearing operation on the color paste, and dispersing the color paste in the silica gel dispersion liquid of the single-walled carbon nanotube by high-speed shearing;
s4: stirring and mixing: adding a diluent solvent into the dispersion liquid, and uniformly stirring;
s5: and (3) thermosetting molding: the coating is coated on plastic base materials such as PET, PE and the like in the modes of roll coating, blade coating, spraying and the like, and the silica gel antistatic coating with different colors is formed through thermocuring.
And in the step S2, the single-walled carbon nanotubes are uniformly dispersed in the silica gel in a grinding and dispersing mode, and in the step S3, the color paste is uniformly dispersed in the silica gel dispersion liquid of the single-walled carbon nanotubes in a high-speed shearing and dispersing mode.
The first step is as follows: dispersing the single-walled carbon nanotube in silica gel by grinding,
the second step is that: dispersing the color paste into the silica gel dispersion liquid of the single-walled carbon nanotube in the first step by high-speed shearing,
the third step: adding a diluent solvent, uniformly stirring,
the fourth step: the coating is coated on a PET substrate by roll coating, silica gel antistatic coatings with different colors are formed by thermal curing at 150 ℃, and the surface resistance is tested by a surface resistance tester.
The first embodiment is as follows:
wherein the content of the single-walled carbon nanotube dispersion liquid is 5 percent, and the content of the silica gel is 5 percent40 percent, color paste content of 0.1 percent, solvent content of 54.9 percent and surface resistance of 10 percent9Ω。
Example two:
wherein the content of the single-walled carbon nanotube dispersion liquid is 10 percent, the content of the silica gel is 35 percent, the content of the color paste is 1 percent, the content of the solvent is 54 percent, and the surface resistance of the material is 10 percent8Ω。
Example three:
wherein the content of the single-walled carbon nanotube dispersion liquid is 15 percent, the content of the silica gel is 30 percent, the content of the color paste is 3 percent, the content of the solvent is 52 percent, and the surface resistance of the material is 10 percent7Ω。
Example four:
wherein the content of the single-walled carbon nanotube dispersion liquid is 25 percent, the content of the silica gel is 20 percent, the content of the color paste is 5 percent, the content of the solvent is 50 percent, and the surface resistance of the material is 10 percent6Ω。
Example five:
wherein the content of the single-walled carbon nanotube dispersion liquid is 30 percent, the content of the silica gel is 15 percent, the content of the color paste is 8 percent, the content of the solvent is 47 percent, and the surface resistance of the material is 10 percent6Ω。
Example six:
wherein the content of the single-walled carbon nanotube dispersion liquid is 40 percent, the content of the silica gel is 10 percent, the content of the color paste is 10 percent, the content of the solvent is 40 percent, and the surface resistance of the material is 10 percent6Ω。
By the above examples, the present invention has excellent antistatic property.
The following examples are added with color pastes of different colors to obtain antistatic silica gel coatings of different colors.
Example seven:
wherein the content of the single-walled carbon nanotube dispersion liquid is 10 percent, the content of the silica gel is 35 percent, the content of the color paste is 1 percent, the content of the solvent is 54 percent, the color paste is red, the color of the coating is red, and the surface resistance of the coating is 108Ω。
Example eight:
wherein the content of the single-walled carbon nanotube dispersion liquid is 10 percent, the content of the silica gel is 35 percent, the content of the color paste is 1 percent, the content of the solvent is 54 percent, and the content of the color paste isThe color of the coating is blue, and the surface resistance of the coating is 108Ω。
Example nine:
wherein the content of the single-walled carbon nanotube dispersion liquid is 15 percent, the content of the silica gel is 30 percent, the content of the color paste is 1 percent, the content of the solvent is 54 percent, the color paste is yellow, the color of the coating is yellow, and the surface resistance of the coating is 108Ω。
Example ten:
wherein the content of the single-walled carbon nanotube dispersion liquid is 25 percent, the content of the silica gel is 20 percent, the content of the color paste is 1 percent, the content of the solvent is 54 percent, the color paste is green, the color of the coating is green, and the surface resistance of the coating is 108Ω。
Example eleven:
wherein the content of the single-walled carbon nanotube dispersion liquid is 30 percent, the content of the silica gel is 15 percent, the content of the color paste is 1 percent, the content of the solvent is 54 percent, the color paste is purple, the color of the coating is purple, and the surface resistance of the coating is 108Ω。
Example twelve:
wherein the content of the single-walled carbon nanotube dispersion liquid is 40 percent, the content of the silica gel is 10 percent, the content of the color paste is 1 percent, the content of the solvent is 54 percent, the color paste is orange, the color of the coating is orange, and the surface resistance of the coating is 108Ω。
The examples show that the invention can be used for preparing antistatic coatings with different colors and has excellent antistatic performance.
The working principle is as follows: preparing a certain amount of single-walled carbon nanotubes, silica gel, a solvent and color paste, putting the single-walled carbon nanotubes, silica gel, the solvent and the color paste into a specified container with scales, proportioning, taking out the single-walled carbon nanotubes, introducing the single-walled carbon nanotubes into a grinding bowl, simultaneously putting the silica gel into the grinding bowl, dispersing the single-walled carbon nanotubes in the silica gel through grinding, carrying out high-speed shearing operation on the color paste, dispersing the color paste into silica gel dispersion liquid of the single-walled carbon nanotubes through high-speed shearing, adding a diluent solvent into the dispersion liquid, uniformly stirring, coating the mixture on plastic base materials such as PET, PE and the like through roll coating, blade coating, spraying and the like, and forming silica gel antistatic coatings with different colors through thermosetting.
It is noted that, herein, relational terms such as first and second (a, b, etc.) and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.

Claims (8)

1. The conductive and antistatic liquid comprises a single-walled carbon nanotube, silica gel, a solvent and color paste, and is characterized in that: the single-walled carbon nanotube comprises 5-40% of single-walled carbon nanotubes, 10-40% of silica gel, 10-54.9% of solvent, 0.1-10% of color paste, 0.4% of single-walled carbon nano powder in the single-walled carbon nanotubes and a platinum catalyst in the silica gel.
2. A conductive, antistatic liquid as claimed in claim 1 wherein: the single-walled carbon nanotube is single-walled carbon nanotube powder or single-walled carbon nanotube dispersion liquid, and the content of the single-walled carbon nanotube accounts for 5-40% by mass, preferably 10-30% by mass, and more preferably 15-25% by mass.
3. A conductive, antistatic liquid as claimed in claim 1 wherein: the silica gel is a high-molecular elastomer which takes-Si-O-as a main chain and organic groups as side chains.
4. A conductive, antistatic liquid as claimed in claim 1 wherein: the silica gel needs a platinum catalyst for thermal curing, the thermal curing temperature of the silica gel is generally 60-400 ℃, and the content of the silica gel accounts for 10-40% by mass, preferably 15-35% by mass, and more preferably 20-30% by mass.
5. A conductive, antistatic liquid as claimed in claim 1 wherein: the color paste can be oil color paste or water color paste, and the content of the color paste is 0.1-10% by mass, preferably 1-8% by mass, and more preferably 3-5% by mass.
6. A conductive, antistatic liquid as claimed in claim 1 wherein: the solvent can be one or a mixture of two or more of water, alcohol, ester or aromatic hydrocarbon, and the content of the solvent accounts for 10-54.9% by mass, preferably 15-45% by mass, and more preferably 20-40% by mass.
7. A preparation method of a conductive and antistatic liquid comprises the following operation steps:
s1: preparation of materials: preparing a certain amount of single-walled carbon nanotubes, silica gel, a solvent and color paste, filling the mixture into a specified container with scales, and proportioning;
s2: grinding and mixing: taking out the single-walled carbon nanotubes, introducing the single-walled carbon nanotubes into a grinding bowl, simultaneously putting silica gel, and dispersing the single-walled carbon nanotubes in the silica gel through grinding;
s3: color paste mixing: carrying out high-speed shearing operation on the color paste, and dispersing the color paste in the silica gel dispersion liquid of the single-walled carbon nanotube by high-speed shearing;
s4: stirring and mixing: adding a diluent solvent into the dispersion liquid, and uniformly stirring;
s5: and (3) thermosetting molding: the coating is coated on plastic base materials such as PET, PE and the like in the modes of roll coating, blade coating, spraying and the like, and the silica gel antistatic coating with different colors is formed through thermocuring.
8. The method for preparing an electrically conductive and antistatic liquid as claimed in claim 7, wherein the method comprises the following steps: and in the step S2, the single-walled carbon nanotubes are uniformly dispersed in the silica gel in a grinding and dispersing mode, and in the step S3, the color paste is uniformly dispersed in the silica gel dispersion liquid of the single-walled carbon nanotubes in a high-speed shearing and dispersing mode.
CN202110890717.8A 2021-08-04 2021-08-04 Conductive and antistatic liquid and preparation method thereof Pending CN113528009A (en)

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