CN111574875A - EB (Epstein-Barr) curing antistatic coating - Google Patents
EB (Epstein-Barr) curing antistatic coating Download PDFInfo
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- CN111574875A CN111574875A CN202010484145.9A CN202010484145A CN111574875A CN 111574875 A CN111574875 A CN 111574875A CN 202010484145 A CN202010484145 A CN 202010484145A CN 111574875 A CN111574875 A CN 111574875A
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- 238000000576 coating method Methods 0.000 title claims abstract description 51
- 239000011248 coating agent Substances 0.000 title claims abstract description 48
- 239000002216 antistatic agent Substances 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 19
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 17
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 8
- 239000000178 monomer Substances 0.000 claims abstract description 4
- -1 polytetrafluoroethylene Polymers 0.000 claims description 35
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 29
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 29
- 238000001227 electron beam curing Methods 0.000 claims description 14
- 239000002518 antifoaming agent Substances 0.000 claims description 9
- 238000009832 plasma treatment Methods 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 7
- MYWOJODOMFBVCB-UHFFFAOYSA-N 1,2,6-trimethylphenanthrene Chemical compound CC1=CC=C2C3=CC(C)=CC=C3C=CC2=C1C MYWOJODOMFBVCB-UHFFFAOYSA-N 0.000 claims description 6
- 150000003863 ammonium salts Chemical class 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000012266 salt solution Substances 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 239000012265 solid product Substances 0.000 claims description 6
- 239000000243 solution Substances 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000004814 polyurethane Substances 0.000 claims description 4
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 239000004593 Epoxy Substances 0.000 claims description 3
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 3
- KNSXNCFKSZZHEA-UHFFFAOYSA-N [3-prop-2-enoyloxy-2,2-bis(prop-2-enoyloxymethyl)propyl] prop-2-enoate Chemical class C=CC(=O)OCC(COC(=O)C=C)(COC(=O)C=C)COC(=O)C=C KNSXNCFKSZZHEA-UHFFFAOYSA-N 0.000 claims description 3
- MPIAGWXWVAHQBB-UHFFFAOYSA-N [3-prop-2-enoyloxy-2-[[3-prop-2-enoyloxy-2,2-bis(prop-2-enoyloxymethyl)propoxy]methyl]-2-(prop-2-enoyloxymethyl)propyl] prop-2-enoate Chemical compound C=CC(=O)OCC(COC(=O)C=C)(COC(=O)C=C)COCC(COC(=O)C=C)(COC(=O)C=C)COC(=O)C=C MPIAGWXWVAHQBB-UHFFFAOYSA-N 0.000 claims description 3
- 239000002270 dispersing agent Substances 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 229920000570 polyether Polymers 0.000 claims description 3
- 239000002562 thickening agent Substances 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000010894 electron beam technology Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 8
- 238000005406 washing Methods 0.000 abstract description 5
- 239000003973 paint Substances 0.000 abstract description 4
- 239000002344 surface layer Substances 0.000 abstract description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 125000001153 fluoro group Chemical group F* 0.000 abstract description 2
- 230000002045 lasting effect Effects 0.000 abstract description 2
- 238000003756 stirring Methods 0.000 description 15
- 238000001723 curing Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000010410 layer Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000006229 carbon black Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000007542 hardness measurement Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002052 molecular layer Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
- C09D163/10—Epoxy resins modified by unsaturated compounds
-
- 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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/06—Unsaturated polyesters having carbon-to-carbon unsaturation
-
- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
-
- 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
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
- C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
-
- 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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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to the technical field of coatings, in particular to an EB (Electron beam) curing antistatic coating. In order to prepare an acrylate-based water-based paint with stable and lasting antistatic performance, the invention provides an EB (Electron Beam) curing antistatic paint which comprises, by weight, 30-50 parts of acrylate resin, 1-3 parts of an antistatic agent, 10-20 parts of an active monomer, 1-5 parts of an auxiliary agent and 10-15 parts of water, wherein the molecular structure of the prepared antistatic agent is provided with double bonds, the antistatic agent is chemically bonded with the acrylic resin with the double bonds in a paint system in an EB (Electron Beam) curing process, so that the antistatic agent is effectively prevented from falling off due to water washing or friction, the molecular structure of the antistatic agent is also provided with a small amount of F atoms, the antistatic agent is enriched at a position close to the surface layer of a coating film, and the high-concentration antistatic agent on the surface layer of the coating film enables the surface of the coating film to obtain.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to an EB (Electron beam) curing antistatic coating.
Background
The antistatic coating is a functional coating with the capability of conducting electricity and removing accumulated static charges, and when the surface resistivity is less than 109 omega · m, the electrostatic charge accumulated on the surface of an object can be timely discharged by utilizing the discharge effect of the static electricity, so that various problems caused by the accumulation of the static electricity are avoided, and the antistatic coating is widely applied to various industrial fields of electronics, electrical appliances, aviation, chemical industry, printing and the like.
The antistatic coating is prepared by adding carbon black, metal powder and organic antistatic agent into the coating to enhance the conductivity, but the addition of carbon black and metal powder can color the object and affect the transparency of the object. The action mechanism of the organic antistatic agent is that hydrophilic groups of the antistatic agent migrate to the surface of the material to form a water adsorption layer, the effect of improving the conductivity is realized through the effect of the water adsorption layer, the antistatic agent continuously migrates to the surface of the material, and an antistatic layer falling off from the surface of the material due to washing or friction is supplemented, so that the durability of the antistatic layer is improved. For example, the chinese patent invention CNCN 102690582 a directly adds an antistatic agent to a resin coating to obtain a good antistatic effect, but cannot ensure the antistatic durability of the coating, and the antistatic agent in the coating system continuously migrates to the surface of the material and gradually falls off along with washing or friction, so that the coating finally loses the antistatic effect. Therefore, it is a matter of research to find a method for preparing a permanent coating with stable antistatic properties.
EB curing, i.e. electron beam curing, is to utilize electric field to make the electron beam emitted from cathode ray tube undergo the process of linear acceleration to make its energy be up to 100-400 KeV; the electron beam irradiates the coating containing unsaturated double bonds to initiate the polymerization of the coating, thereby achieving the purpose of curing the coating. Low volatile organic solvent content (VOC) from EB curing; the curing speed is high, the reaction is complete, and the energy consumption is low; the curing temperature is low; the equipment is compact and has strong controllability; the performance of the cured product is excellent; the method has unique functions in the aspects of industrial technical transformation, product upgrading and updating, energy consumption reduction, environmental pollution reduction and the like ((lywei, jiaxian, penjia, dulrich. (2013); research on electron beam curing of polyurethane acrylate, guangdong chemical industry, 103-104)).
Disclosure of Invention
Aiming at the problems in the prior art, the technical problems to be solved by the invention are as follows: the antistatic coating obtained by directly adding the organic antistatic agent into the coating system has poor antistatic stability and durability.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention provides an EB (Epstein-Barr) curing antistatic coating which comprises the following components in parts by weight:
the auxiliary agent comprises the following components in parts:
specifically, the acrylate resin is one or more of epoxy acrylic resin, polyurethane acrylic resin, polyester acrylic resin or silicon modified acrylic resin.
Specifically, the preparation method of the antistatic agent comprises the following steps:
(1) plasma treatment of low molecular weight polytetrafluoroethylene micropowder
Performing radio frequency discharge on the low molecular weight polytetrafluoroethylene by adopting an outer electrode and a 13.56MHz radio frequency power generator, fixing the pressure of discharge gas to be 50Pa, the discharge power to be 50w, discharging for 5min, and placing the low molecular weight polytetrafluoroethylene in the air for 10min after the discharge is finished;
(2) dissolving 10 parts by weight of methacryloyl chloroethyl dodecane dimethyl ammonium bromide in water to obtain an ammonium salt solution with the mass concentration of 20 wt.%, adding 1 part by weight of low molecular weight polytetrafluoroethylene micro powder subjected to plasma treatment in the step (1), heating in a water bath at 80 ℃ for 24 hours, filtering the reaction solution to obtain a solid, and ultrasonically cleaning the obtained solid product in water for 20 minutes to obtain the antistatic agent.
Specifically, the low molecular weight polytetrafluoroethylene micropowder is U.S. 3M PTEE J24 or U.S. dupont MP 1400.
Specifically, the active monomer is one or more of pentaerythritol tetraacrylate, ethoxylated pentaerythritol tetraacrylate, and dipentaerythritol hexaacrylate.
Specifically, the leveling agent is a BYK-346 leveling agent.
Specifically, the thickening agent is BYK-420 or BYK-425.
Specifically, the dispersant is BYK-142 or BYK-154.
Specifically, the defoaming agent is an organic silicon defoaming agent or a polyether defoaming agent.
Specifically, the EB cured antistatic coating was prepared according to the following steps:
(1) under the condition of low-speed stirring, adding water and an antistatic agent in a formula amount in turn, and then adjusting the rotating speed to 1500-2000 rpm;
(2) adding acrylate and an active monomer into the mixed system obtained in the step (1), and stirring for 30-50 min;
(3) and (3) adding an auxiliary agent into the mixed system obtained in the step (2), and stirring for 25-30min to obtain the EB curing antistatic coating.
The invention has the beneficial effects that:
(1) the molecular structure of the antistatic agent prepared by the invention is provided with double bonds, and the antistatic agent is chemically bonded with acrylic resin with double bonds in a coating system in an EB (Electron beam) curing process, so that the antistatic agent is firmly fixed in the molecular structure of the acrylic resin, and the antistatic agent is prevented from falling off due to washing or friction to a great extent;
(2) the molecular structure of the antistatic agent prepared by the method has a small amount of F atoms, so that the antistatic agent prepared by the method is mostly enriched at a position close to the surface layer of an EB (electron beam) curing coating, the high-concentration antistatic agent on the surface layer of the coating adsorbs water molecules in air, and a continuous water molecular layer with a certain thickness is formed on the surface of the coating, so that the electric conductivity of the surface of the coating is greatly improved, and the EB curing coating obtains a stable and lasting excellent antistatic effect;
(3) the main component of the antistatic agent prepared by the invention is polytetrafluoroethylene, the polytetrafluoroethylene has the characteristics of high temperature resistance, chemical solvent resistance and low friction coefficient, and the modified polytetrafluoroethylene and an acrylic resin matrix also have good compatibility, so that the comprehensive performance of the antistatic coating is greatly improved.
Detailed Description
The present invention will now be described in further detail with reference to examples.
The leveling agent used in the following examples and comparative examples of the present invention was BYK-346 leveling agent, the thickener was BYK-420 or BYK-425, the dispersant was BYK-142 or BYK-154, and the defoaming agent was an organosilicon defoaming agent or a polyether defoaming agent.
Example 1
(1) Plasma treatment of low molecular weight polytetrafluoroethylene micropowder
Performing radio frequency discharge on the low molecular weight polytetrafluoroethylene by adopting an outer electrode and a 13.56MHz radio frequency power generator, fixing the pressure of discharge gas to be 50Pa, the discharge power to be 50w, discharging for 5min, and placing the low molecular weight polytetrafluoroethylene in the air for 10min after the discharge is finished;
(2) dissolving 10 parts by weight of methacryloyl chloroethyl dodecane dimethyl ammonium bromide in water to obtain an ammonium salt solution with the mass concentration of 20 wt.%, adding 1 part by weight of low molecular weight polytetrafluoroethylene micro powder treated by the plasma in the step (1), heating in a water bath at 80 ℃ for 24 hours, filtering the reaction solution to obtain a solid, and ultrasonically cleaning the obtained solid product in water for 20 minutes to obtain the antistatic agent;
(3) under low-speed stirring, sequentially adding 10 parts by weight of water and 1 part by weight of antistatic agent, and then adjusting the rotating speed to 1500 rpm;
(4) adding 30 parts by weight of epoxy acrylic resin and 10 parts by weight of pentaerythritol tetraacrylate into the mixed system obtained in the step (3), and stirring for 30 min;
(5) and (4) adding 1 part of auxiliary agent into the mixed system obtained in the step (4), and stirring for 25min to obtain the EB curing antistatic coating.
Example 2
(1) Plasma treatment of low molecular weight polytetrafluoroethylene micropowder
Performing radio frequency discharge on the low molecular weight polytetrafluoroethylene by adopting an outer electrode and a 13.56MHz radio frequency power generator, fixing the pressure of discharge gas to be 50Pa, the discharge power to be 50w, discharging for 5min, and placing the low molecular weight polytetrafluoroethylene in the air for 10min after the discharge is finished;
(2) dissolving 10 parts by weight of methacryloyl chloroethyl dodecane dimethyl ammonium bromide in water to obtain an ammonium salt solution with the mass concentration of 20 wt.%, adding 1 part by weight of low molecular weight polytetrafluoroethylene micro powder treated by the plasma in the step (1), heating in a water bath at 80 ℃ for 24 hours, filtering the reaction solution to obtain a solid, and ultrasonically cleaning the obtained solid product in water for 20 minutes to obtain the antistatic agent;
(3) under low-speed stirring, adding 15 parts by weight of water and 3 parts by weight of antistatic agent in sequence, and then adjusting the rotating speed to 2000 rpm;
(4) adding 50 parts by weight of polyurethane acrylic resin and 20 parts by weight of ethoxylated pentaerythritol tetraacrylate into the mixed system obtained in the step (3), and stirring for 50 min;
(5) and (4) adding 5 parts of auxiliary agent into the mixed system obtained in the step (4), and stirring for 30min to obtain the EB curing antistatic coating.
Example 3
(1) Plasma treatment of low molecular weight polytetrafluoroethylene micropowder
Performing radio frequency discharge on the low molecular weight polytetrafluoroethylene by adopting an outer electrode and a 13.56MHz radio frequency power generator, fixing the pressure of discharge gas to be 50Pa, the discharge power to be 50w, discharging for 5min, and placing the low molecular weight polytetrafluoroethylene in the air for 10min after the discharge is finished;
(2) dissolving 10 parts by weight of methacryloyl chloroethyl dodecane dimethyl ammonium bromide in water to obtain an ammonium salt solution with the mass concentration of 20 wt.%, adding 1 part by weight of low molecular weight polytetrafluoroethylene micro powder treated by the plasma in the step (1), heating in a water bath at 80 ℃ for 24 hours, filtering the reaction solution to obtain a solid, and ultrasonically cleaning the obtained solid product in water for 20 minutes to obtain the antistatic agent;
(3) under low-speed stirring, sequentially adding 12 parts by weight of water and 2 parts by weight of antistatic agent, and then adjusting the rotating speed to 1500 rpm;
(4) adding 40 parts by weight of polyester acrylic resin and 15 parts by weight of dipentaerythritol hexaacrylate into the mixed system obtained in the step (3), and stirring for 50 min;
(5) and (4) adding 3 parts of auxiliary agent into the mixed system obtained in the step (4), and stirring for 30min to obtain the EB curing antistatic coating.
Example 4
(1) Plasma treatment of low molecular weight polytetrafluoroethylene micropowder
Performing radio frequency discharge on the low molecular weight polytetrafluoroethylene by adopting an outer electrode and a 13.56MHz radio frequency power generator, fixing the pressure of discharge gas to be 50Pa, the discharge power to be 50w, discharging for 5min, and placing the low molecular weight polytetrafluoroethylene in the air for 10min after the discharge is finished;
(2) dissolving 10 parts by weight of methacryloyl chloroethyl dodecane dimethyl ammonium bromide in water to obtain an ammonium salt solution with the mass concentration of 20 wt.%, adding 1 part by weight of low molecular weight polytetrafluoroethylene micro powder treated by the plasma in the step (1), heating in a water bath at 80 ℃ for 24 hours, filtering the reaction solution to obtain a solid, and ultrasonically cleaning the obtained solid product in water for 20 minutes to obtain the antistatic agent;
(3) under low-speed stirring, adding 15 parts by weight of water and 3 parts by weight of antistatic agent in sequence, and then adjusting the rotating speed to 2000 rpm;
(4) adding 35 parts by weight of silicon modified acrylic resin and 15 parts by weight of pentaerythritol tetraacrylate into the mixed system obtained in the step (3), and stirring for 30 min;
(5) and (4) adding 2 parts of auxiliary agent into the mixed system obtained in the step (4), and stirring for 25min to obtain the EB curing antistatic coating.
Comparative example 1 differs from example 1 in that: the amount of the antistatic agent added was 5 parts by weight.
Comparative example 2 differs from example 1 in that: the amount of pentaerythritol tetraacrylate added was 5 parts by weight.
Comparative example 3 differs from example 1 in that: the amount of pentaerythritol tetraacrylate added was 25 parts by weight.
The antistatic coatings prepared in examples 1 to 4 and comparative examples 1 to 3 were cured by EB curing equipment, EB energy in EB curing equipment was 150 keV 200keV, EB curing dose was 20 kGy 50kGy, hardness of the antistatic coating films prepared in examples 1 to 4 and comparative examples 1 to 3 was measured by GB/T6739-1996 coating film pencil hardness measurement method, adhesion of the coating films was measured according to GB/T9286-1998, ISO 2409:1992, water resistance was measured according to GB1733-93 paint film water resistance measurement method, aging resistance was measured according to ISO11341:2004, alkali resistance was measured according to GB/T9265-2009, washing resistance was measured according to GBT9266-2009, antistatic performance was measured according to ASTMD257(25 ℃, relative humidity RH 60%), and the results were shown in Table 1:
TABLE 1
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (9)
1. The EB curing antistatic coating is characterized by comprising the following components in parts by weight:
the auxiliary agent comprises the following components in parts:
2. the EB cured antistatic coating of claim 1, wherein: the acrylic resin is one or more of epoxy acrylic resin, polyurethane acrylic resin, polyester acrylic resin or silicon modified acrylic resin.
3. The EB cured antistatic coating of claim 1, wherein: the preparation method of the antistatic agent comprises the following steps:
(1) plasma treatment of low molecular weight polytetrafluoroethylene micropowder
Performing radio frequency discharge on the low molecular weight polytetrafluoroethylene by adopting an outer electrode and a 13.56MHz radio frequency power generator, fixing the pressure of discharge gas to be 50Pa, the discharge power to be 50w, discharging for 5min, and placing the low molecular weight polytetrafluoroethylene in the air for 10min after the discharge is finished;
(2) dissolving 10 parts by weight of methacryloyl chloroethyl dodecane dimethyl ammonium bromide in water to obtain an ammonium salt solution with the mass concentration of 20 wt.%, adding 1 part by weight of low molecular weight polytetrafluoroethylene micro powder subjected to plasma treatment in the step (1), heating in a water bath at 80 ℃ for 24 hours, filtering the reaction solution to obtain a solid, and ultrasonically cleaning the obtained solid product in water for 20 minutes to obtain the antistatic agent.
4. An EB cured antistatic coating according to claim 3, characterized in that: the low molecular weight polytetrafluoroethylene micropowder is US 3M PTEE J24 or US DuPont MP 1400.
5. The EB cured antistatic coating of claim 1, wherein: the active monomer is one or more of pentaerythritol tetraacrylate, ethoxylated pentaerythritol tetraacrylate and dipentaerythritol hexaacrylate.
6. The EB cured antistatic coating of claim 1, wherein: the leveling agent is a BYK-346 leveling agent.
7. The EB cured antistatic coating of claim 1, wherein: the thickening agent is BYK-420 or BYK-425.
8. The EB cured antistatic coating of claim 1, wherein: the dispersant is BYK-142 or BYK-154.
9. The EB cured antistatic coating of claim 1, wherein: the defoaming agent is an organic silicon defoaming agent or a polyether defoaming agent.
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| CN202010484145.9A CN111574875A (en) | 2020-06-01 | 2020-06-01 | EB (Epstein-Barr) curing antistatic coating |
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| CN202010484145.9A CN111574875A (en) | 2020-06-01 | 2020-06-01 | EB (Epstein-Barr) curing antistatic coating |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1552781A (en) * | 2003-06-02 | 2004-12-08 | 深圳市海川实业股份有限公司 | Ultraviolet photocurable anti-static paint |
| CN104356927A (en) * | 2014-11-07 | 2015-02-18 | 广东希贵光固化材料有限公司 | UV-curable antistatic coating |
| CN105860778A (en) * | 2016-03-23 | 2016-08-17 | 珠海市佳伟力环保科技有限公司 | Waterborne radiation-curable coating decorative plate and preparation method thereof |
| CN106752863A (en) * | 2016-12-07 | 2017-05-31 | 上海乘鹰新材料有限公司 | Aqueous hard, antistatic photocureable coating high and preparation method thereof |
-
2020
- 2020-06-01 CN CN202010484145.9A patent/CN111574875A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1552781A (en) * | 2003-06-02 | 2004-12-08 | 深圳市海川实业股份有限公司 | Ultraviolet photocurable anti-static paint |
| CN104356927A (en) * | 2014-11-07 | 2015-02-18 | 广东希贵光固化材料有限公司 | UV-curable antistatic coating |
| CN105860778A (en) * | 2016-03-23 | 2016-08-17 | 珠海市佳伟力环保科技有限公司 | Waterborne radiation-curable coating decorative plate and preparation method thereof |
| CN106752863A (en) * | 2016-12-07 | 2017-05-31 | 上海乘鹰新材料有限公司 | Aqueous hard, antistatic photocureable coating high and preparation method thereof |
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Application publication date: 20200825 |