CN113956701A - Anti-static damping coating and application thereof - Google Patents
Anti-static damping coating and application thereof Download PDFInfo
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- CN113956701A CN113956701A CN202111355482.9A CN202111355482A CN113956701A CN 113956701 A CN113956701 A CN 113956701A CN 202111355482 A CN202111355482 A CN 202111355482A CN 113956701 A CN113956701 A CN 113956701A
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- ferroferric oxide
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- 239000011248 coating agent Substances 0.000 title claims abstract description 50
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Images
Classifications
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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
- 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
- C09D125/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
- C09D125/02—Homopolymers or copolymers of hydrocarbons
- C09D125/04—Homopolymers or copolymers of styrene
- C09D125/08—Copolymers of styrene
- C09D125/14—Copolymers of styrene with unsaturated esters
-
- 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
- C09D131/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid, or of a haloformic acid; Coating compositions based on derivatives of such polymers
- C09D131/02—Homopolymers or copolymers of esters of monocarboxylic acids
- C09D131/04—Homopolymers or copolymers of vinyl acetate
-
- 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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
-
- 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
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- 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
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2265—Oxides; Hydroxides of metals of iron
- C08K2003/2275—Ferroso-ferric oxide (Fe3O4)
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- 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
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- 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
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- 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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
Abstract
The application provides an antistatic damping coating and application, wherein the coating comprises the following components in percentage by weight: 40-50% of matrix resin emulsion; 15 to 25 percent of modified filler; 7 to 17 percent of graphite powder; 7 to 20 percent of water; 6 to 12 percent of wood fiber; 0.2 to 1 percent of dispersant; 0.5 to 1 percent of defoaming agent; 2 to 4 percent of flame retardant; 0.5 to 5 percent of film forming auxiliary agent; the matrix resin emulsion is selected from one or more of styrene-acrylic emulsion, pure acrylic emulsion and VAE emulsion; the modified filler is a silane modified ferroferric oxide and polyaniline composite material. Compared with the existing coating, the coating has the characteristics of good mechanical property, low cost, simple synthesis, good conductivity and the like, and is beneficial to the application of the coating in antistatic of floor damping coatings.
Description
Technical Field
The application belongs to the technical field of coating, especially, relate to a floor prevents static damping coating and application, promptly prevent static damping coating mainly used floor, damping coating can prevent static.
Background
The damping paint product for floor slab is mainly composed of high molecular resin, filler and functional assistant, but some problems are found in the process of realizing sound insulation, such as electrostatic problems are often involved in printing plants, pharmaceutical plants and some plants for producing inflammable and explosive products. Static electricity is ubiquitous in life and brings great harm to production and life. In summary, there are two types of hazards, the first being from interactions with charged bodies: in a printing factory, static electricity between paper sheets can cause the paper sheets to be bonded together and difficult to separate, which brings troubles to printing; in pharmaceutical factories, the drugs may not reach the standard purity due to electrostatic attraction of dust. The second kind of harm is the influence caused by electrostatic discharge, such as in some production sites with dust, oil mist or flammable and explosive materials, high voltage electrostatic discharge causes electric shock, which is very easy to cause explosion and fire; in the electronics industry, electrostatic discharge can cause electronic devices to malfunction, causing electromagnetic interference.
In order to reduce the negative effects of static electricity, the use of antistatic coating products is a good method. The antistatic coating is generally composed of high molecular resin, filler and functional auxiliary agent, wherein the high molecular resin and the filler play a main antistatic role. Common conductive polymers include polyacetylene, polypyrrole, polythiophene, polyaniline, etc., which are conductive and have an ability to transport charges due to the pi electronic structure and delocalization, and thus are called intrinsic conductive polymers. The conductive filler can be classified into carbon-based and non-carbon-based, and the carbon-based mainly includes carbon black, carbon nanotubes, graphene, and the like. The non-carbon system mainly comprises metal, oxide thereof and conductive inorganic matters, and the conduction mechanism of the non-carbon system is that electrons are transferred to the surface of the coating layer through a conductive network formed among fillers, so that the effect of releasing static electricity is achieved.
Some prior arts apply conductive polymer to paint, for example, chinese patent publication No. CN 102604456a prepares a photocuring nano polyaniline-epoxy acrylic resin interpenetrating network antistatic paint, which is obtained by polymerizing aniline in an in-situ emulsion in epoxy acrylic resin, and then adding a dilutable monomer, a catalyst, an initiator, a filler, a polymerization inhibitor, etc. to obtain the antistatic paint. The coating has good glossiness and stable conductivity, can be used in places such as electronics, electrostatic dust-proof floors, bridges and the like, but has the defects of high price, to-be-improved conductivity and the like.
Disclosure of Invention
In view of this, the present application provides an anti-static damping coating and an application thereof as a floor coating, and the anti-static damping coating has the characteristics of good electrical conductivity, low cost and the like.
The invention provides an antistatic damping coating which comprises the following components in percentage by weight:
40-50% of matrix resin emulsion;
15 to 25 percent of modified filler;
7 to 17 percent of graphite powder;
7 to 20 percent of water;
6 to 12 percent of wood fiber;
0.2 to 1 percent of dispersant;
0.5 to 1 percent of defoaming agent;
2 to 4 percent of flame retardant;
0.5 to 5 percent of film forming auxiliary agent;
the matrix resin emulsion is selected from one or more of styrene-acrylic emulsion, pure acrylic emulsion and VAE emulsion; the modified filler is a silane modified ferroferric oxide and polyaniline composite material.
In an embodiment of the present invention, the modified filler is prepared in the following manner: firstly, modifying ferroferric oxide by adopting a silane coupling agent KH550, and then polymerizing doped polyaniline on the surface of the modified particles in situ to obtain the silane modified ferroferric oxide-polyaniline composite material.
In the embodiment of the invention, in the preparation process of the modified filler, the mass ratio of ferroferric oxide to the silane coupling agent KH550 is 1: 40-60.
In the embodiment of the invention, the graphite powder comprises 120-mesh graphite, 200-mesh graphite and 400-mesh graphite, and the mass ratio of the 120-mesh graphite to the 200-mesh graphite to the 400-mesh graphite is 1-2: 3-5: 1-3.
In the embodiment of the invention, the grain diameter of the wood fiber is 18-200 μm.
In an embodiment of the present invention, the flame retardant is a phosphorus-based flame retardant; the anti-static damping paint also comprises a bactericide.
In the embodiment of the invention, the weight percentage of the film-forming additive is 1-4%; the weight percentage of the bactericide is 0.5-1.5%.
The invention also provides the application of the antistatic damping coating as described in the foregoing as a floor coating.
The embodiment of the invention provides an antistatic damping floor coating, which comprises the following raw materials in parts by weight: 40-50% of matrix resin emulsion, 15-25% of silane modified ferroferric oxide and polyaniline composite material, 7-17% of graphite powder, 7-20% of water and 6-12% of wood fiber; and a small amount of damping coating functional auxiliary agent. In the prior art, cheap and easily-obtained ferroferric oxide powder is mostly directly added into the coating, so that the ferroferric oxide powder is easy to settle in the coating, the compatibility with the coating is poor, and the antistatic capability can also be improved. Different from the prior art, the invention mainly adopts modified ferroferric oxide/polyaniline and graphite with different proportions as the composite conductive admixture, and the polyaniline/modified Fe3O4The composite filler and the graphite with low price form a conductive net structure through the conductive synergistic effect, and the surface paint film resistance is reduced, so that the floor antistatic damping paint with low cost and excellent antistatic capability is prepared. Compared with the existing coating, the coating has the characteristics of good mechanical property, low cost, simple synthesis, good conductivity and the like, and is beneficial to the application of the coating in antistatic of floor damping coatings.
Drawings
FIG. 1 is a schematic of the morphology of modified fillers in some embodiments of the invention.
Detailed Description
The technical solutions in the embodiments of the present application are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. 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 application.
The application provides an antistatic damping coating, which comprises the following components in percentage by weight:
40-50% of matrix resin emulsion;
15 to 25 percent of modified filler;
7 to 17 percent of graphite powder;
7 to 20 percent of water;
6 to 12 percent of wood fiber;
0.2 to 1 percent of dispersant;
0.5 to 1 percent of defoaming agent;
2 to 4 percent of flame retardant;
0.5 to 5 percent of film forming auxiliary agent;
the matrix resin emulsion is selected from one or more of styrene-acrylic emulsion, pure acrylic emulsion and VAE emulsion; the modified filler is a silane modified ferroferric oxide and polyaniline composite material.
Aiming at the defects of the prior anti-static coating technology, the technical scheme of the invention is to provide the anti-static damping coating with good conductivity, and the anti-static damping coating is simple in raw material synthesis, low in cost and beneficial to application.
The damping paint raw material comprises 40-50% of matrix resin emulsion, such as 40%, 45% and 50% according to weight ratio. The matrix resin in the matrix resin emulsion can be formed into a coating film layer and is selected from one or more mixtures of styrene-acrylic emulsion, pure acrylic emulsion and VAE emulsion, and the specific examples are as follows: basf 7080 styrene-acrylic emulsion, basf 2438 (acrylic emulsion), Beijing petrochemical BJ-707(VAE emulsion), etc. The VAE emulsion is a vinyl acetate-ethylene copolymer emulsion for short, and is a high molecular emulsion prepared by using vinyl acetate and ethylene monomers as basic raw materials, adding an emulsifier and an initiator and copolymerizing by a high-pressure emulsion polymerization method, wherein the vinyl acetate content is usually in the range of 70-95%. The VAE emulsion paint film has good flexibility and aging resistance.
The styrene-acrylic emulsion (styrene-acrylic ester emulsion) is prepared by copolymerizing styrene and acrylic ester monomers through emulsion, has good adhesive force, good water resistance, oil resistance, heat resistance and aging resistance, and has the technical parameters as follows: the solid content is 40-50%, the viscosity is 80-2000 mPa.s, the monomer residual quantity is 0.5%, and the pH value is 8-9. All the acrylic ester is adopted as the raw material of the pure acrylic emulsion, so that the weather resistance is excellent.
In the invention, the antistatic damping paint comprises the following components: 15-25% of modified filler and 7-17% of graphite powder; the modified filler is a silane modified ferroferric oxide and polyaniline composite material. The ferroferric oxide powder is a conductor with very good conductivity, Fe2+And Fe3+Is disordered in the octahedral positions, and electrons can be transferred between the two oxidation states. Polyaniline belongs to a conjugated system (at least an unsaturated bond system), pi bond electrons in a long chain are more active, and particularly, after a charge transfer complex is formed with a dopant, the polyaniline is easy to escape from a track to form free electrons; the conductive energy band formed by overlapping pi electron tracks in the macromolecular chain provides a channel for the transfer and transition of current carriers, and current can be conducted under the push of external energy and the vibration of the macromolecular chain.
In the embodiment of the invention, KH550 modified ferroferric oxide is adopted to increase the compatibility of the ferroferric oxide with a resin matrix, so that the ferroferric oxide is not easy to settle, and doped polyaniline is polymerized in situ on the surface of the ferroferric oxide, namely the modified filler. The preparation process of the modified ferroferric oxide/polyaniline composite material provided by the embodiment of the invention is divided into two parts; the first part is to prepare modified ferroferric oxide, which comprises experimental raw materials of ferroferric oxide (Fe)3O4) KH550, water and absolute ethyl alcohol. The chemical name of the silane coupling agent KH550 is gamma-aminopropyltriethoxysilane, which is soluble in water and hydrolyzed in water. The preparation process of the silane modified ferroferric oxide is as follows:
(1) weighing a proper amount of ferroferric oxide, wherein the mass ratio of the ferroferric oxide to the silane coupling agent KH550 is preferably 1:40-60, more preferably 1: 45-55, wherein the mass ratio of the ferroferric oxide to the absolute ethyl alcohol to the KH550 to the absolute ethyl alcohol to the absolute ethyl: 3: 50: 50.
(2) firstly, ferroferric oxide and absolute ethyl alcohol are mixed and stirred for 15min, and in addition, a silane coupling agent KH550 is hydrolyzed for 20 min.
(3) Pouring the two of (2) into a reaction kettle, preferably stirring at high speed for 120min at the water bath temperature of 70 ℃, then separating with a magnet, and repeatedly washing with absolute ethyl alcohol.
(4) Drying and grinding to obtain modified ferroferric oxide particles with about 100 meshes.
In the embodiment of the invention, the second part is the preparation of the polyaniline/modified Fe composite material by the in-situ polymerization method3O4The method comprises the following experimental raw materials: the modified ferroferric oxide, 0.2mol/L aniline solution, 0.4mol/L ferric trichloride hexahydrate solution and 0.4mol/L levo-camphorsulfonic acid solution; the preparation method comprises the following steps:
(1) weighing a proper amount of modified ferroferric oxide powder, adding the modified ferroferric oxide powder into the levo-camphorsulfonic acid solution, and stirring for 30 min.
(2) Adding ferric trichloride hexahydrate and aniline solution into the step (1), and stirring to react for 30 min.
(3) After stirring, filtering out polyaniline/modified Fe3O4Repeatedly washing the compound with absolute ethyl alcohol and distilled water, and drying to obtain polyaniline/modified Fe3O4The composite of (a); the particle size of the polyaniline/modified ferroferric oxide is 270-400 mu m.
In the embodiment of the invention, 15-25% of modified ferroferric oxide/polyaniline filler is adopted, preferably 15%, 16%, 20% or 25% and the like. In addition, the invention also adopts cheap graphite powder, and the weight percentage of the graphite powder is 7-17%, and the preferential percentage is 7-12%. The layered graphite structure itself has conductivity, which is compatible with the polyaniline/modified Fe described above3O4The composite filler forms a conductive net structure through the conductive synergistic effect, so that the resistance of the surface paint film is favorably reduced, and the antistatic capability is improved.
In the specific embodiment of the invention, the particle size of the graphite powder is 120 meshes, 200 meshes and 400 meshes, and the mass ratio of graphite in the particle sizes can be 1-2: 3-5: 1-3. The graphite with three particle sizes can be uniformly filled in a network made of polyaniline/ferroferric oxide, and the conductive effect is good and the cost is low.
The anti-static damping coating comprises 6-12 wt% of wood fiber, preferably 6-10%; specifically, the particle size of the wood fiber is 18-200 μm, and a commercial product is adopted. The wood fiber can enhance the strength and flexibility of the damping coating, and the components and sources are not limited.
The functional assistant can be a mixture of a plurality of defoaming agents, dispersing agents, flame retardants, film-forming aids and bactericides, and in a preferred embodiment of the invention, the antistatic damping coating comprises: 0.2 to 1 percent of dispersant; 0.5 to 1 percent of defoaming agent; 2 to 4 percent of flame retardant; 0.5 to 5 percent of film forming additive; 0.5 to 1.5 percent of bactericide. Wherein the flame retardant is preferably a phosphorus-based flame retardant; the weight percentage of the film-forming aid is preferably 1-4%. Preferably, the dispersant may be polymethacrylate; the defoaming agent is higher alcohol fatty acid ester; the film-forming auxiliary agent is dodecyl alcohol ester; the bactericide is isothiazolinone. The method specifically comprises the following steps: the dispersing agent is Naxiang SPA202, the defoaming agent is Sanding Jia SDJ8003, the flame retardant is a Baotai phosphorus flame retardant, the film-forming auxiliary agent is Kayin chemical OE-300, the bactericide is stand upright GY-916 and other products.
In the invention, the antistatic damping coating comprises 7-20 wt% of water, preferably 8-19 wt% of water (water is generally required to be added in the process of mixing the filler). The preparation of the antistatic damping coating preferably comprises the following steps: mixing and stirring two or more kinds of resin emulsion at the stirring speed of 800-1000 rpm for 30 min. Then, the rotating speed is adjusted to 1200-1500 rpm, and the polyaniline/modified Fe prepared by the first two parts is used3O4Graphite powder and wood fiber are sequentially added into the matrix resin emulsion, and a defoaming agent, a bactericide, a flame retardant and a film-forming assistant are added to prepare the antistatic damping coating.
In addition, the invention also provides the application of the antistatic damping paint as the floor coating. The anti-static damping coating disclosed by the invention has no pungent smell, good mechanical properties such as flexibility and impact resistance, good conductivity, excellent anti-static capability and low cost, and can be used as a floor anti-static damping coating.
In order to better understand the technical content of the invention, specific examples are provided below to further illustrate the invention. In the present invention, the amounts referred to in the present invention are all mass percentages unless otherwise specified.
Example 1
1. Preparation process of modified ferroferric oxide/polyaniline material
(1) The preparation process of the modified ferroferric oxide is as follows: weighing ferroferric oxide, wherein the mass ratio of the ferroferric oxide to absolute ethyl alcohol, KH550 and water is 1: 3: 50: 50. mixing and stirring ferroferric oxide and absolute ethyl alcohol for 15min, hydrolyzing a silane coupling agent KH550 for 20min, pouring the mixture into a reaction kettle, stirring at a high speed for 120min under the condition that the water bath temperature is 70 ℃, separating by using a magnet, repeatedly washing by using absolute ethyl alcohol, drying and grinding to obtain modified ferroferric oxide particles with the particle size of about 100 meshes.
(2) In-situ polymerization method for preparing polyaniline/modified Fe composite material3O4Raw materials comprise the modified ferroferric oxide, 0.2mol/L aniline solution, 0.4mol/L ferric trichloride hexahydrate solution and 0.4mol/L levo-camphorsulfonic acid solution; the preparation method comprises the following steps: weighing a proper amount of modified ferroferric oxide powder, adding the modified ferroferric oxide powder into a levocamphorsulfonic acid solution (ferroferric oxide: levocamphorsulfonic acid: 3: 1), and stirring for 30 min. Adding ferric trichloride hexahydrate and an aniline solution into the steps, and stirring to react for 30 min. After stirring, filtering out polyaniline/modified Fe3O4Repeatedly washing the compound with absolute ethyl alcohol and distilled water, and drying to obtain polyaniline/modified Fe3O4The composite material of (1).
The particle size of the polyaniline/modified ferroferric oxide is 270-400 mu m, and the mass fraction is 20-25%; the shape structure of the modified filler is shown in fig. 1, and fig. 1 is a schematic diagram of the shape structure of the modified filler in some embodiments of the invention, and doped polyaniline is polymerized in situ on the main surface of ferroferric oxide.
2. The preparation of the antistatic damping paint comprises the following steps: mixing the two resin emulsions (styrene-acrylic emulsion and pure acrylic emulsion or VAE emulsion) at a stirring speed of 1000 rpm for 30min, and regulating the stirring speed to 1200 rpmPolyaniline/modified Fe3O4Graphite powder and wood fiber are sequentially added into the matrix resin emulsion, and a defoaming agent, a bactericide, a flame retardant and a film-forming assistant are added to prepare the anti-static damping coating.
The components of the coating formula are shown in table 1, corresponding to formula 1 #.
Examples 2 to 6
Antistatic damping coatings were prepared according to the formulation # 2-6 # of table 1 and the method of example 1, respectively.
Comparative examples 1 to 2
Damping coatings were prepared according to the methods of Table 1, formulations # 7-8 # and example 1, respectively.
TABLE 1 formulations 1-8# (wt%) of the embodiments
In the above examples, the dispersant is Naxiang SPA202, polymethacrylate; the antifoaming agent is Sanding Jia SDJ8003 and high-carbon alcohol fatty acid ester, the flame retardant is a Baotai phosphorus flame retardant, and the film-forming auxiliary agent is Kai Yin chemical OE-300 and dodecyl alcohol ester; the bactericide is Stand GY-916, isothiazolinone. Particle size of ground calcium carbonate: 400-600 mesh.
The paint is subjected to performance tests, and the results are as follows:
table 2: results of Performance test of coating compositions Nos. 1 to 8
And (4) testing standard: flexibility: GB/T1731-1993; impact resistance: GB/T1732 + 1993; coating film surface resistivity: GB/T169906-1997; composite loss factor: GB/T16406-1996; drying time: GB/T17281979 (1989); 45 ° angle combustion experiment: Q/CR 546.3-2016; salt spray resistance: GB/T1771-2007.
From the above results, it can be seen that the composite loss factor is 0.104-0.114 at room temperature of 20 ℃, and is greater than 0.09, and the comparison with the comparative example shows that the invention has good damping performance. The resistivity of the coating film is less than 1010Omega/cm, which shows very good antistatic properties. The antistatic damping coating has the characteristics of good conductivity, low cost and the like, and is beneficial to application.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. The anti-static damping coating is characterized by comprising the following components in percentage by weight:
40-50% of matrix resin emulsion;
15 to 25 percent of modified filler;
7 to 17 percent of graphite powder;
7 to 20 percent of water;
6 to 12 percent of wood fiber;
0.2 to 1 percent of dispersant;
0.5 to 1 percent of defoaming agent;
2 to 4 percent of flame retardant;
0.5 to 5 percent of film forming auxiliary agent;
the matrix resin emulsion is selected from one or more of styrene-acrylic emulsion, pure acrylic emulsion and VAE emulsion; the modified filler is a silane modified ferroferric oxide and polyaniline composite material.
2. The antistatic damping coating of claim 1 wherein the modified filler is prepared by: firstly, modifying ferroferric oxide by adopting a silane coupling agent KH550, and then polymerizing doped polyaniline on the surface of the modified particles in situ to obtain the silane modified ferroferric oxide-polyaniline composite material.
3. The antistatic damping paint as claimed in claim 2, wherein in the preparation process of the modified filler, the mass ratio of ferroferric oxide to silane coupling agent KH550 is 1: 40-60.
4. The antistatic damping paint as claimed in any one of claims 1 to 3, wherein the graphite powder comprises 120 mesh graphite, 200 mesh graphite and 400 mesh graphite in a mass ratio of 1-2: 3-5: 1-3.
5. The antistatic damping paint as claimed in claim 4, wherein the wood fiber particle size is 18-200 μm.
6. The antistatic damping coating of claim 5 wherein the flame retardant is a phosphorus based flame retardant; the anti-static damping paint also comprises a bactericide.
7. The antistatic damping paint as claimed in claim 6, wherein the weight percentage of the film forming additive is 1-4%; the weight percentage of the bactericide is 0.5-1.5%.
8. Use of the antistatic damping paint as claimed in any one of claims 1 to 7 as a floor coating.
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| CN101633809A (en) * | 2009-08-14 | 2010-01-27 | 吉林正基科技开发股份有限公司 | Water-soluble conducting polyaniline static-free damping paint and preparation method thereof |
| CN102604456A (en) * | 2012-02-27 | 2012-07-25 | 孝感学院 | Preparation method of light-cured nano-grade polyaniline-epoxy acrylic resin interpenetrating network antistatic paint |
| CN103289400A (en) * | 2013-06-21 | 2013-09-11 | 山西大同大学 | Ferroferric oxide/polypyrrole composite material and preparation method thereof |
| CN105419544A (en) * | 2015-12-31 | 2016-03-23 | 优链新材料科技（上海）有限公司 | Water-based damping coating and preparation method thereof |
| CN107417914A (en) * | 2017-09-07 | 2017-12-01 | 张家港市汇鼎新材料科技有限公司 | A kind of ferroso-ferric oxide Pt/Polypyrrole composite material and preparation method thereof |
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| CN101633809A (en) * | 2009-08-14 | 2010-01-27 | 吉林正基科技开发股份有限公司 | Water-soluble conducting polyaniline static-free damping paint and preparation method thereof |
| CN102604456A (en) * | 2012-02-27 | 2012-07-25 | 孝感学院 | Preparation method of light-cured nano-grade polyaniline-epoxy acrylic resin interpenetrating network antistatic paint |
| CN103289400A (en) * | 2013-06-21 | 2013-09-11 | 山西大同大学 | Ferroferric oxide/polypyrrole composite material and preparation method thereof |
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