CN113801567A - Coating for coating plastic bottom case of notebook computer - Google Patents
Coating for coating plastic bottom case of notebook computer Download PDFInfo
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- CN113801567A CN113801567A CN202111181004.0A CN202111181004A CN113801567A CN 113801567 A CN113801567 A CN 113801567A CN 202111181004 A CN202111181004 A CN 202111181004A CN 113801567 A CN113801567 A CN 113801567A
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- notebook computer
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- 239000011248 coating agent Substances 0.000 title claims abstract description 84
- 238000000576 coating method Methods 0.000 title claims abstract description 84
- 229920003023 plastic Polymers 0.000 title claims abstract description 35
- 239000004033 plastic Substances 0.000 title claims abstract description 35
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 33
- 229920006150 hyperbranched polyester Polymers 0.000 claims abstract description 30
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims abstract description 29
- 239000002904 solvent Substances 0.000 claims abstract description 29
- 239000003973 paint Substances 0.000 claims abstract description 22
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims abstract description 19
- 239000002270 dispersing agent Substances 0.000 claims abstract description 18
- 125000003118 aryl group Chemical group 0.000 claims abstract description 17
- 239000003999 initiator Substances 0.000 claims abstract description 14
- WRQUOKZRJAVFGC-UHFFFAOYSA-N 4-ethenyl-2,8-bis(trifluoromethyl)quinoline Chemical compound C1=CC=C(C(F)(F)F)C2=NC(C(F)(F)F)=CC(C=C)=C21 WRQUOKZRJAVFGC-UHFFFAOYSA-N 0.000 claims abstract description 12
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims abstract description 12
- BRTALTYTFFNPAC-UHFFFAOYSA-N boroxin Chemical compound B1OBOBO1 BRTALTYTFFNPAC-UHFFFAOYSA-N 0.000 claims abstract description 12
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000004814 polyurethane Substances 0.000 claims abstract description 12
- 229920002635 polyurethane Polymers 0.000 claims abstract description 12
- 239000000843 powder Substances 0.000 claims abstract description 12
- NOWKCMXCCJGMRR-UHFFFAOYSA-N Aziridine Chemical compound C1CN1 NOWKCMXCCJGMRR-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims description 22
- 239000002518 antifoaming agent Substances 0.000 claims description 15
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 8
- SWXVUIWOUIDPGS-UHFFFAOYSA-N diacetone alcohol Chemical group CC(=O)CC(C)(C)O SWXVUIWOUIDPGS-UHFFFAOYSA-N 0.000 claims description 6
- 239000006224 matting agent Substances 0.000 claims description 6
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 claims description 6
- KMNCBSZOIQAUFX-UHFFFAOYSA-N 2-ethoxy-1,2-diphenylethanone Chemical compound C=1C=CC=CC=1C(OCC)C(=O)C1=CC=CC=C1 KMNCBSZOIQAUFX-UHFFFAOYSA-N 0.000 claims description 4
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical group CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 claims description 4
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 claims description 4
- 239000012752 auxiliary agent Substances 0.000 claims description 4
- 229920006217 cellulose acetate butyrate Polymers 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 229920000058 polyacrylate Polymers 0.000 claims description 4
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical group [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 4
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims description 4
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 4
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 claims description 4
- MSAHTMIQULFMRG-UHFFFAOYSA-N 1,2-diphenyl-2-propan-2-yloxyethanone Chemical compound C=1C=CC=CC=1C(OC(C)C)C(=O)C1=CC=CC=C1 MSAHTMIQULFMRG-UHFFFAOYSA-N 0.000 claims description 3
- PTTPXKJBFFKCEK-UHFFFAOYSA-N 2-Methyl-4-heptanone Chemical group CC(C)CC(=O)CC(C)C PTTPXKJBFFKCEK-UHFFFAOYSA-N 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229920000142 Sodium polycarboxylate Polymers 0.000 claims description 3
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 claims description 3
- 239000012965 benzophenone Substances 0.000 claims description 3
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 abstract description 8
- 239000000853 adhesive Substances 0.000 abstract description 7
- 230000001070 adhesive effect Effects 0.000 abstract description 7
- 239000002987 primer (paints) Substances 0.000 description 24
- 239000011257 shell material Substances 0.000 description 18
- 238000000034 method Methods 0.000 description 9
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 238000004132 cross linking Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 229920000178 Acrylic resin Polymers 0.000 description 4
- 239000004925 Acrylic resin Substances 0.000 description 4
- 230000032683 aging Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical class OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 description 4
- 239000013538 functional additive Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000001723 curing Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 241001128004 Demodex Species 0.000 description 2
- 230000008033 biological extinction Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 238000003878 thermal aging Methods 0.000 description 2
- RAXXELZNTBOGNW-UHFFFAOYSA-N 1H-imidazole Chemical group C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 1
- YZSRICFIQLVSMQ-UHFFFAOYSA-N 2-(trifluoromethyl)quinoline Chemical group C1=CC=CC2=NC(C(F)(F)F)=CC=C21 YZSRICFIQLVSMQ-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical group Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 229920007019 PC/ABS Polymers 0.000 description 1
- 238000003848 UV Light-Curing Methods 0.000 description 1
- 239000002318 adhesion promoter Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- HGAZMNJKRQFZKS-UHFFFAOYSA-N chloroethene;ethenyl acetate Chemical compound ClC=C.CC(=O)OC=C HGAZMNJKRQFZKS-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000000016 photochemical curing Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Classifications
-
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/002—Priming 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
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a coating for coating a plastic bottom shell of a notebook computer, which comprises a primer and a finish; the primer comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 100 (2-5); the component A comprises: 50-70 parts of carboxyl-containing hyperbranched poly (amine-ester) acrylate, 10-20 parts of carboxyl-terminated aromatic hyperbranched polyester, 2-4 parts of functional assistant and 20-30 parts of solvent A; the component B comprises: aziridine crosslinking agent XR-10060-80 parts and butyl acetate 25-35 parts; the finish paint comprises: 60-75 parts of hyperbranched perfluorinated polyurethane acrylate oligomer, 3-5 parts of 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, 2-4 parts of 2,4, 6-trivinyl boroxine, 0.1-0.3 part of 1-allyl-3-vinyl imidazole chloride salt, 4-6 parts of matting powder, 0.8-1.2 parts of flatting agent, 1-2 parts of dispersing agent, 0.8-1.2 parts of initiator and 40-50 parts of solvent B. The coating for coating the plastic bottom shell of the notebook computer disclosed by the invention has the advantages of good impact resistance, excellent wear resistance, excellent heat and humidity resistance, excellent cold and heat cycle resistance and excellent heat stability, and sufficient environmental protection property and adhesive force.
Description
Technical Field
The invention relates to the technical field of coating of notebook computer shells, in particular to a coating for coating a plastic bottom shell of a notebook computer.
Background
The bottom shell of the notebook computer is an important component of the notebook computer, and plays roles of protecting other components and dissipating heat in the notebook computer. Meanwhile, as an appearance part of the notebook computer, the quality of the notebook computer directly affects the appearance, normal working stability and service life of the notebook computer. In order to better protect the notebook computer, the coating of the bottom case of the notebook computer is an important part of the manufacturing process of the notebook computer, and the coating not only provides colorful decoration for the computer, but also can protect the bottom case material, enhance the scratch resistance, wear resistance and durability in use, thereby being concerned and valued by the industry.
The currently common notebook computer bottom shell material is a PC/ABS alloy material, and the coating for coating comprises a primer and a finish. The primer has a very large effect, and can insulate a base material and improve the adhesive force of the finish paint. However, the traditional primer for bottom case coating is a single-component paint prepared by matching thermoplastic acrylic resin with vinyl chloride-vinyl acetate resin, the paint has poor environmental protection performance due to containing halogen, and other primers for bottom case coating of notebook computers on the market have the defects of long drying time, high cost, low production efficiency, insufficient adhesive force and poor environmental protection performance more or less; the finish paint is another important part of the coating for coating the notebook computer, and the appearance and the service life of the notebook computer are directly influenced by the performance of the finish paint. The existing finish paint has low impact strength, and the wear resistance, the damp and heat resistance, the cold and heat cycle resistance and the heat resistance stability need to be further improved.
In order to solve the problems, the chinese invention patent CN102977756B discloses a two-component primer coating matched with a UV coating for coating a plastic case of a notebook computer, which comprises a main agent and a curing agent, wherein the main agent comprises the following components by weight: 10-20% of low hydroxyl value hydroxyl acrylic resin, 10-20% of medium and low hydroxyl value hydroxyl acrylic resin, 20-40% of medium hydroxyl value hydroxyl acrylic resin, 5-15% of cellulose acetate butyrate resin, 0-2% of adhesion promoter, 0.2-0.5% of flatting agent, 0.2-0.5% of defoaming agent, 5-30% of pigment slurry and 15-25% of solvent; the curing agent comprises the following components in parts by weight: 70-80% of hexamethylene diisocyanate and 20-30% of solvent. The invention also relates to a preparation method of the two-component primer. The double-component primer is suitable for spraying notebook computer shells, has good adherence to plastic parts such as ABS, PC, ABS + PC and the like, and can be well combined with UV finish paint. However, the aging resistance thereof is to be further improved; and the specific composition of the UV finishing paint is not disclosed, the impact strength is low, and the wear resistance, the humidity resistance and the performance stability are required to be further improved.
The field still needs a coating for coating the plastic bottom shell of the notebook computer, which has the advantages of good impact resistance, excellent wear resistance, heat and humidity resistance, cold and hot cycle resistance and heat stability, sufficient environmental protection and adhesive force and convenient construction.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the coating for coating the plastic bottom shell of the notebook computer, which has the advantages of good impact resistance, excellent wear resistance, heat and humidity resistance, cold and heat cycle resistance and heat stability, sufficient environmental protection and adhesive force and convenient construction.
In order to achieve the purpose, the invention adopts the technical scheme that: a coating for coating a plastic bottom shell of a notebook computer is characterized by comprising a primer and a finish; the primer comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 100 (2-5); the component A comprises the following raw materials in parts by weight: 50-70 parts of carboxyl-containing hyperbranched poly (amine-ester) acrylate, 10-20 parts of carboxyl-terminated aromatic hyperbranched polyester, 2-4 parts of functional assistant and 20-30 parts of solvent A; the component B comprises the following raw materials in parts by weight: aziridine crosslinking agent XR-10060-80 parts and butyl acetate 25-35 parts; the finish paint comprises the following components in parts by weight: 60-75 parts of hyperbranched perfluorinated polyurethane acrylate oligomer, 3-5 parts of 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, 2-4 parts of 2,4, 6-trivinyl boroxine, 0.1-0.3 part of 1-allyl-3-vinyl imidazole chloride salt, 4-6 parts of matting powder, 0.8-1.2 parts of flatting agent, 1-2 parts of dispersing agent, 0.8-1.2 parts of initiator and 40-50 parts of solvent B.
Preferably, the source of the hyperbranched poly (amine-ester) acrylate containing carboxyl is not particularly required, and in one embodiment of the invention, the hyperbranched poly (amine-ester) acrylate containing carboxyl is prepared according to the method of example 8 in patent CN 101993532A.
Preferably, the carboxyl-terminated aromatic hyperbranched polyester is at least one of carboxyl-terminated hyperbranched polyester Hyper C101, carboxyl-terminated hyperbranched polyester Hyper C102, carboxyl-terminated hyperbranched polyester Hyper C103 and carboxyl-terminated hyperbranched polyester Hyper C104; purchased from Wuhan super-branched resin science and technology Co.
Preferably, the functional auxiliary agent is a mixture formed by mixing a defoaming agent, a leveling agent and a dispersing agent according to a mass ratio of (1-3) to (2) (1-2); the defoaming agent is one or more of tributyl phosphate, a defoaming agent Demodex 3100 and a defoaming agent BYK 088; the flatting agent is one or more of a polyacrylate flatting agent, a cellulose acetate butyrate flatting agent and a polyvinyl butyral flatting agent; the dispersing agent is sodium hexametaphosphate and/or sodium polycarboxylate.
Preferably, the solvent A is at least one of ethyl acetate, butyl acetate and propylene glycol methyl ether acetate.
Preferably, the source of the hyperbranched perfluorinated urethane acrylate oligomer is not particularly required, and in one embodiment of the invention, the hyperbranched perfluorinated urethane acrylate oligomer is prepared by the method of example 1 in patent CN 105482680B.
Preferably, the matting agent is degussa matting agent OK 412.
Preferably, the initiator is at least one of benzoin ethyl ether, benzoin isopropyl ether, benzophenone and 2-hydroxy-2-methyl-1-phenyl acetone.
Preferably, the solvent B is methyl isobutyl ketone, diisobutyl ketone, propylene glycol methyl ether acetate, diacetone alcohol or a mixture thereof.
Detailed Description
The following detailed description of preferred embodiments of the invention will be made.
A coating for coating a plastic bottom shell of a notebook computer is characterized by comprising a primer and a finish; the primer comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 100 (2-5); the component A comprises the following raw materials in parts by weight: 50-70 parts of carboxyl-containing hyperbranched poly (amine-ester) acrylate, 10-20 parts of carboxyl-terminated aromatic hyperbranched polyester, 2-4 parts of functional assistant and 20-30 parts of solvent A; the component B comprises the following raw materials in parts by weight: aziridine crosslinking agent XR-10060-80 parts and butyl acetate 25-35 parts; the finish paint comprises the following components in parts by weight: 60-75 parts of hyperbranched perfluorinated polyurethane acrylate oligomer, 3-5 parts of 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, 2-4 parts of 2,4, 6-trivinyl boroxine, 0.1-0.3 part of 1-allyl-3-vinyl imidazole chloride salt, 4-6 parts of matting powder, 0.8-1.2 parts of flatting agent, 1-2 parts of dispersing agent, 0.8-1.2 parts of initiator and 40-50 parts of solvent B.
Preferably, the source of the hyperbranched poly (amine-ester) acrylate containing carboxyl is not particularly required, and in one embodiment of the invention, the hyperbranched poly (amine-ester) acrylate containing carboxyl is prepared according to the method of example 8 in patent CN 101993532A.
Preferably, the carboxyl-terminated aromatic hyperbranched polyester is at least one of carboxyl-terminated hyperbranched polyester Hyper C101, carboxyl-terminated hyperbranched polyester Hyper C102, carboxyl-terminated hyperbranched polyester Hyper C103 and carboxyl-terminated hyperbranched polyester Hyper C104; purchased from Wuhan super-branched resin science and technology Co.
Preferably, the functional auxiliary agent is a mixture formed by mixing a defoaming agent, a leveling agent and a dispersing agent according to a mass ratio of (1-3) to (2) (1-2); the defoaming agent is one or more of tributyl phosphate, a defoaming agent Demodex 3100 and a defoaming agent BYK 088; the flatting agent is one or more of a polyacrylate flatting agent, a cellulose acetate butyrate flatting agent and a polyvinyl butyral flatting agent; the dispersing agent is sodium hexametaphosphate and/or sodium polycarboxylate.
Preferably, the solvent A is at least one of ethyl acetate, butyl acetate and propylene glycol methyl ether acetate.
Preferably, the source of the hyperbranched perfluorinated urethane acrylate oligomer is not particularly required, and in one embodiment of the invention, the hyperbranched perfluorinated urethane acrylate oligomer is prepared by the method of example 1 in patent CN 105482680B.
Preferably, the matting agent is degussa matting agent OK 412.
Preferably, the initiator is at least one of benzoin ethyl ether, benzoin isopropyl ether, benzophenone and 2-hydroxy-2-methyl-1-phenyl acetone.
Preferably, the solvent B is methyl isobutyl ketone, diisobutyl ketone, propylene glycol methyl ether acetate, diacetone alcohol or a mixture thereof.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
(1) according to the coating for coating the plastic bottom shell of the notebook computer, the prepared coating has the advantages of good impact resistance, excellent wear resistance, heat and humidity resistance, excellent cold and heat cycle resistance and heat stability, sufficient environmental protection and adhesive force and convenience in construction due to the mutual matching of the primer and the finish paint and the synergistic effect of the components and the formula.
(2) According to the coating for coating the plastic bottom shell of the notebook computer, the primer comprises the component A and the component B which are respectively stored, so that the stability of the paint is effectively ensured, and the shelf life of the paint is prolonged; the used raw materials do not contain components which can cause influence on the environment by halogens, so that the environment-friendly performance of the coating is better; aziridine on an aziridine crosslinking agent XR-100 can react with carboxyl on carboxyl-containing hyperbranched poly (amine-ester) acrylate and carboxyl-terminated aromatic hyperbranched polyester to crosslink, the crosslinking process can be carried out at room temperature, the drying is fast, and the finishing coat can be sprayed after the crosslinking process is placed for an indefinite period; and the cross-linking reaction does not produce environmental pollution; through the hyperbranched poly (amine-ester) acrylate containing carboxyl and the aromatic hyperbranched polyester terminated with carboxyl, and the introduction of amine-ester, hyperbranched polyester and aromatic group structures, the mutual influence of the amine-ester, the hyperbranched polyester and the aromatic group structures ensures that the final primer film has good mechanical property and good compatibility and adhesion with a substrate and a fabric; unsaturated ethylenic bonds contained in the hyperbranched poly (amine-ester) acrylate containing carboxyl can participate in UV photocuring reaction of the finish after the finish is coated, so that the primer and the finish are connected by chemical bonds, and the adhesion is further improved.
(3) The invention provides a coating for coating a plastic bottom shell of a notebook computer, which is prepared from the following components in parts by weight: 60-75 parts of hyperbranched perfluorinated polyurethane acrylate oligomer, 3-5 parts of 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, 2-4 parts of 2,4, 6-trivinyl boroxine, 0.2-0.5 part of 1-allyl-3-vinyl imidazole chloride salt, 4-6 parts of matting powder, 0.8-1.2 parts of flatting agent, 1-2 parts of dispersing agent, 0.8-1.2 parts of initiator and 40-50 parts of solvent B. The existing hyperbranched perfluorinated polyurethane acrylate oligomer in the prior art is used as a film forming substance, monomers containing unsaturated ethylenic bonds such as 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, 2,4, 6-trivinyl boroxine and 1-allyl-3-vinyl imidazole chloride salt and the film forming substance are subjected to cross-linking curing reaction in the UV curing process to form an interpenetrating network structure, and a trifluoromethyl quinoline structure, boroxine and an imidazole salt structure are simultaneously introduced on the molecular chain of the film forming substance and are mutually matched and act together, so that the prepared coating has the advantages of good impact resistance, wear resistance, humidity and heat resistance, excellent cold and heat cycle resistance and heat stability, sufficient environmental protection and adhesive force, and convenient construction.
(4) According to the coating for coating the plastic bottom shell of the notebook computer, the 1-allyl-3-vinyl imidazole chloride salt is added, so that on one hand, the antibacterial and antistatic properties can be improved, and in addition, the coating can perform an ion exchange reaction with a carboxylic group which is not subjected to a crosslinking reaction in a primer, and chloride ions are volatilized and removed in a hydrogen chloride form, so that the coating is low in chlorine and good in environmental protection property; meanwhile, the connection tightness between the primer and the finish paint can be improved.
The invention will be further described with reference to specific examples, but the scope of protection of the invention is not limited thereto:
example 1
A coating for coating a plastic bottom shell of a notebook computer is characterized by comprising a primer and a finish; the primer comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 100: 2; the component A comprises the following raw materials in parts by weight: 50 parts of carboxyl-containing hyperbranched poly (amine-ester) acrylate, 10 parts of carboxyl-terminated aromatic hyperbranched polyester, 2 parts of functional assistant and 20 parts of solvent A; the component B comprises the following raw materials in parts by weight: aziridine crosslinking agent XR-10060 parts and butyl acetate 25 parts; the finish paint comprises the following components in parts by weight: 60 parts of hyperbranched perfluorinated polyurethane acrylate oligomer, 3 parts of 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, 2 parts of 2,4, 6-trivinyl boroxine, 0.1 part of 1-allyl-3-vinyl imidazole chloride salt, 4 parts of matting powder, 0.8 part of flatting agent, 1 part of dispersant, 0.8 part of initiator and 40 parts of solvent B.
The hyperbranched poly (amine-ester) acrylate containing carboxyl is prepared according to the method of example 8 in the patent CN 101993532A; the carboxyl-terminated aromatic hyperbranched polyester is carboxyl-terminated hyperbranched polyester Hyper C101; purchased from Wuhan super-branched resin science and technology Co.
The functional auxiliary agent is a mixture formed by mixing a defoaming agent, a flatting agent and a dispersing agent according to the mass ratio of 1:2: 1; the defoaming agent is tributyl phosphate; the flatting agent is a polyacrylate flatting agent; the dispersant is sodium hexametaphosphate; the solvent A is ethyl acetate.
The hyperbranched perfluorinated polyurethane acrylate oligomer is prepared by the method of embodiment 1 in the patent CN 105482680B; the extinction powder is Texaco extinction powder OK 412; the initiator is benzoin ethyl ether; the solvent B is methyl isobutyl ketone.
Example 2
The coating for coating the plastic bottom shell of the notebook computer is basically the same as that in the embodiment 1, except that the coating is prepared from the following raw materials in parts by weight: the primer comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 100: 3; the component A comprises the following raw materials in parts by weight: 55 parts of carboxyl-containing hyperbranched poly (amine-ester) acrylate, 12 parts of carboxyl-terminated aromatic hyperbranched polyester, 2.5 parts of functional additive and 23 parts of solvent A; the component B comprises the following raw materials in parts by weight: aziridine crosslinking agent XR-10065 parts and butyl acetate 28 parts; the finish paint comprises the following components in parts by weight: 65 parts of hyperbranched perfluorinated polyurethane acrylate oligomer, 3.5 parts of 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, 2.5 parts of 2,4, 6-trivinyl boroxine, 0.15 part of 1-allyl-3-vinyl imidazole chloride salt, 4.5 parts of matting powder, 0.9 part of flatting agent, 1.2 parts of dispersing agent, 0.9 part of initiator and 43 parts of solvent B.
Example 3
The coating for coating the plastic bottom shell of the notebook computer is basically the same as that in the embodiment 1, except that the coating is prepared from the following raw materials in parts by weight: the primer comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 100: 3.5; the component A comprises the following raw materials in parts by weight: 60 parts of carboxyl-containing hyperbranched poly (amine-ester) acrylate, 15 parts of carboxyl-terminated aromatic hyperbranched polyester, 3 parts of functional additive and 25 parts of solvent A; the component B comprises the following raw materials in parts by weight: aziridine crosslinking agent XR-10070 parts and butyl acetate 30 parts; the finish paint comprises the following components in parts by weight: 68 parts of hyperbranched perfluorinated polyurethane acrylate oligomer, 4 parts of 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, 3 parts of 2,4, 6-trivinyl boroxine, 0.2 part of 1-allyl-3-vinyl imidazole chloride salt, 5 parts of matting powder, 1 part of flatting agent, 1.5 parts of dispersing agent, 1 part of initiator and 45 parts of solvent B.
Example 4
The coating for coating the plastic bottom shell of the notebook computer is basically the same as that in the embodiment 1, except that the coating is prepared from the following raw materials in parts by weight: the primer comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 100: 4.5; the component A comprises the following raw materials in parts by weight: 65 parts of carboxyl-containing hyperbranched poly (amine-ester) acrylate, 18 parts of carboxyl-terminated aromatic hyperbranched polyester, 3.5 parts of functional additive and 28 parts of solvent A; the component B comprises the following raw materials in parts by weight: aziridine crosslinking agent XR-10075 parts and butyl acetate 33 parts; the finish paint comprises the following components in parts by weight: 73 parts of hyperbranched perfluorinated polyurethane acrylate oligomer, 4.5 parts of 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, 3.5 parts of 2,4, 6-trivinyl boroxine, 0.25 part of 1-allyl-3-vinyl imidazole chloride salt, 5.5 parts of matting powder, 1.1 parts of flatting agent, 1.8 parts of dispersing agent, 1.1 parts of initiator and 48 parts of solvent B.
Example 5
The coating for coating the plastic bottom shell of the notebook computer is basically the same as that in the embodiment 1, except that the coating is prepared from the following raw materials in parts by weight: the primer comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 100: 5; the component A comprises the following raw materials in parts by weight: 70 parts of carboxyl-containing hyperbranched poly (amine-ester) acrylate, 20 parts of carboxyl-terminated aromatic hyperbranched polyester, 4 parts of functional additive and 30 parts of solvent A; the component B comprises the following raw materials in parts by weight: aziridine crosslinking agent XR-10080 parts and butyl acetate 35 parts; the finish paint comprises the following components in parts by weight: 75 parts of hyperbranched perfluorinated polyurethane acrylate oligomer, 5 parts of 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, 4 parts of 2,4, 6-trivinyl boroxine, 0.3 part of 1-allyl-3-vinyl imidazole chloride salt, 6 parts of matting powder, 1.2 parts of flatting agent, 2 parts of dispersant, 1.2 parts of initiator and 50 parts of solvent B.
Comparative example 1
A coating material for coating a plastic bottom case of a notebook computer, which is substantially the same as in example 1, except that 4-vinyl-2, 8-bis (trifluoromethyl) quinoline is not added.
Comparative example 2
A coating material for coating a plastic bottom case of a notebook computer, which is substantially the same as in example 1, except that 1-allyl-3-vinylimidazole chloride salt is not added.
In order to further explain the beneficial technical effects of the coating for coating the plastic bottom shell of the notebook computer, which is related to each embodiment, the component A and the component B of the primer are uniformly mixed, coated on the plastic bottom shell, baked at 80 ℃ for 25 minutes, cooled to room temperature at normal temperature, coated with finish paint, and cured for 30 minutes at 60 ℃ by adopting ultraviolet light with the wavelength of 220 nm; then, relevant performance tests are carried out according to the current national standard of China or the conventional method in the field, and the test results are shown in table 1. The heat aging resistance is measured by the retention rate of the abrasion resistance RCA of the paper tape after the materials prepared in each example are placed in hot air at 85 ℃ and are subjected to manual accelerated aging for 96 hours, and the larger the value is, the better the heat aging resistance is. The test load for abrasion resistance was 175 gf.
TABLE 1
| Test items | Unit of | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Comparative example 1 | Comparative example 2 |
| Adhesion force | Stage | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| Abrasion resistance RCA of paper tape | Next time | 568 | 572 | 579 | 584 | 590 | 497 | 535 |
| Moisture and heat resistance | Hour(s) | 148 | 153 | 160 | 163 | 168 | 120 | 138 |
| Thermal aging resistance | % | 98.6 | 99.0 | 99.3 | 99.5 | 99.7 | 94.8 | 98.0 |
| Impact strength | kg·cm | 55 | 55 | 55 | 60 | 60 | 50 | 50 |
As can be seen from the above table, the coating for coating the plastic bottom case of the notebook computer disclosed in the embodiment of the present invention has more excellent impact strength, wear resistance, moist heat resistance and thermal aging resistance than the comparative example, and the impact strength is higher, which is a result of the synergistic effect of the raw materials.
The above-mentioned embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the invention, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.
Claims (10)
1. A coating for coating a plastic bottom shell of a notebook computer is characterized by comprising a primer and a finish; the primer comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 100 (2-5); the component A comprises the following raw materials in parts by weight: 50-70 parts of carboxyl-containing hyperbranched poly (amine-ester) acrylate, 10-20 parts of carboxyl-terminated aromatic hyperbranched polyester, 2-4 parts of functional assistant and 20-30 parts of solvent A; the component B comprises the following raw materials in parts by weight: aziridine crosslinking agent XR-10060-80 parts and butyl acetate 25-35 parts; the finish paint comprises the following components in parts by weight: 60-75 parts of hyperbranched perfluorinated polyurethane acrylate oligomer, 3-5 parts of 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, 2-4 parts of 2,4, 6-trivinyl boroxine, 0.1-0.3 part of 1-allyl-3-vinyl imidazole chloride salt, 4-6 parts of matting powder, 0.8-1.2 parts of flatting agent, 1-2 parts of dispersing agent, 0.8-1.2 parts of initiator and 40-50 parts of solvent B.
2. The coating for coating the plastic bottom case of the notebook computer according to claim 1, wherein the carboxyl-terminated aromatic hyperbranched polyester is at least one of carboxyl-terminated hyperbranched polyester Hyper C101, carboxyl-terminated hyperbranched polyester Hyper C102, carboxyl-terminated hyperbranched polyester Hyper C103 and carboxyl-terminated hyperbranched polyester Hyper C104.
3. The coating for coating the plastic bottom case of the notebook computer as claimed in claim 1, wherein the functional auxiliary agent is a mixture formed by mixing an antifoaming agent, a leveling agent and a dispersing agent according to a mass ratio of (1-3) to (2) to (1-2).
4. The coating for coating the plastic bottom case of the notebook computer as claimed in claim 3, wherein the antifoaming agent is one or more of tributyl phosphate, antifoaming agent humble 3100 and antifoaming agent BYK 088.
5. The coating for coating the plastic bottom shell of the notebook computer as claimed in claim 3, wherein the leveling agent is one or more of a polyacrylate leveling agent, a cellulose acetate butyrate leveling agent and a polyvinyl butyral leveling agent.
6. The coating for coating the plastic bottom case of the notebook computer as claimed in claim 3, wherein the dispersant is sodium hexametaphosphate and/or sodium polycarboxylate.
7. The coating for coating the plastic bottom case of the notebook computer as claimed in claim 1, wherein the solvent A is at least one of ethyl acetate, butyl acetate and propylene glycol methyl ether acetate.
8. The coating for coating the plastic bottom shell of the notebook computer as claimed in claim 1, wherein the matting agent is degussa matting agent OK 412.
9. The coating for coating the plastic bottom case of the notebook computer as claimed in claim 1, wherein the initiator is at least one of benzoin ethyl ether, benzoin isopropyl ether, benzophenone, and 2-hydroxy-2-methyl-1-phenyl acetone.
10. The coating for coating the plastic bottom case of the notebook computer as claimed in claim 1, wherein the solvent B is methyl isobutyl ketone, diisobutyl ketone, propylene glycol methyl ether acetate, diacetone alcohol or a mixture thereof.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111181004.0A CN113801567A (en) | 2021-10-11 | 2021-10-11 | Coating for coating plastic bottom case of notebook computer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111181004.0A CN113801567A (en) | 2021-10-11 | 2021-10-11 | Coating for coating plastic bottom case of notebook computer |
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| CN113801567A true CN113801567A (en) | 2021-12-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115851065A (en) * | 2022-11-25 | 2023-03-28 | 湖北双键精细化工有限公司 | Modified acrylic emulsion for single-component primer matched with UV finishing paint and preparation method thereof |
-
2021
- 2021-10-11 CN CN202111181004.0A patent/CN113801567A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115851065A (en) * | 2022-11-25 | 2023-03-28 | 湖北双键精细化工有限公司 | Modified acrylic emulsion for single-component primer matched with UV finishing paint and preparation method thereof |
| CN115851065B (en) * | 2022-11-25 | 2023-08-15 | 湖北双键精细化工有限公司 | Modified acrylic emulsion for single-component primer matched with UV finishing paint and preparation method thereof |
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