CN111087907A - Super-weather-resistant thermosetting powder coating - Google Patents
Super-weather-resistant thermosetting powder coating Download PDFInfo
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- CN111087907A CN111087907A CN201911339783.5A CN201911339783A CN111087907A CN 111087907 A CN111087907 A CN 111087907A CN 201911339783 A CN201911339783 A CN 201911339783A CN 111087907 A CN111087907 A CN 111087907A
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- 238000000576 coating method Methods 0.000 title claims abstract description 70
- 239000011248 coating agent Substances 0.000 title claims abstract description 69
- 239000000843 powder Substances 0.000 title claims abstract description 54
- 229920001187 thermosetting polymer Polymers 0.000 title claims abstract description 42
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 28
- 229920005749 polyurethane resin Polymers 0.000 claims abstract description 17
- 239000000945 filler Substances 0.000 claims abstract description 16
- 239000002270 dispersing agent Substances 0.000 claims abstract description 14
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 8
- 239000010703 silicon Substances 0.000 claims abstract description 8
- LYRFLYHAGKPMFH-UHFFFAOYSA-N octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(N)=O LYRFLYHAGKPMFH-UHFFFAOYSA-N 0.000 claims description 18
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 claims description 15
- JXOOCQBAIRXOGG-UHFFFAOYSA-N [B].[B].[B].[B].[B].[B].[B].[B].[B].[B].[B].[B].[Al] Chemical compound [B].[B].[B].[B].[B].[B].[B].[B].[B].[B].[B].[B].[Al] JXOOCQBAIRXOGG-UHFFFAOYSA-N 0.000 claims description 14
- SKKMWRVAJNPLFY-UHFFFAOYSA-N azanylidynevanadium Chemical compound [V]#N SKKMWRVAJNPLFY-UHFFFAOYSA-N 0.000 claims description 14
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 claims description 12
- YMHQVDAATAEZLO-UHFFFAOYSA-N cyclohexane-1,1-diamine Chemical compound NC1(N)CCCCC1 YMHQVDAATAEZLO-UHFFFAOYSA-N 0.000 claims description 12
- ZETYUTMSJWMKNQ-UHFFFAOYSA-N n,n',n'-trimethylhexane-1,6-diamine Chemical compound CNCCCCCCN(C)C ZETYUTMSJWMKNQ-UHFFFAOYSA-N 0.000 claims description 12
- 229910002431 Ce0.8Gd0.2O1.9 Inorganic materials 0.000 claims description 11
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 9
- 229920002554 vinyl polymer Polymers 0.000 claims description 9
- LAAVYEUJEMRIGF-UHFFFAOYSA-N 2,4,4-trimethylpent-2-ene Chemical compound CC(C)=CC(C)(C)C LAAVYEUJEMRIGF-UHFFFAOYSA-N 0.000 claims description 5
- HGQSXVKHVMGQRG-UHFFFAOYSA-N dioctyltin Chemical compound CCCCCCCC[Sn]CCCCCCCC HGQSXVKHVMGQRG-UHFFFAOYSA-N 0.000 claims description 5
- DDPRYTUJYNYJKV-UHFFFAOYSA-N 1,4-diethylpiperazine Chemical compound CCN1CCN(CC)CC1 DDPRYTUJYNYJKV-UHFFFAOYSA-N 0.000 claims description 4
- 239000003973 paint Substances 0.000 claims description 4
- JAZBEHYOTPTENJ-JLNKQSITSA-N all-cis-5,8,11,14,17-icosapentaenoic acid Chemical compound CC\C=C/C\C=C/C\C=C/C\C=C/C\C=C/CCCC(O)=O JAZBEHYOTPTENJ-JLNKQSITSA-N 0.000 claims description 3
- 229960005135 eicosapentaenoic acid Drugs 0.000 claims description 3
- JAZBEHYOTPTENJ-UHFFFAOYSA-N eicosapentaenoic acid Natural products CCC=CCC=CCC=CCC=CCC=CCCCC(O)=O JAZBEHYOTPTENJ-UHFFFAOYSA-N 0.000 claims description 3
- 235000020673 eicosapentaenoic acid Nutrition 0.000 claims description 3
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 claims description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 abstract description 8
- 239000004721 Polyphenylene oxide Substances 0.000 abstract description 5
- 229920000570 polyether Polymers 0.000 abstract description 5
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 abstract description 4
- OQILCOQZDHPEAZ-UHFFFAOYSA-N Palmitinsaeure-octylester Natural products CCCCCCCCCCCCCCCC(=O)OCCCCCCCC OQILCOQZDHPEAZ-UHFFFAOYSA-N 0.000 abstract description 4
- 229920003171 Poly (ethylene oxide) Polymers 0.000 abstract description 4
- 239000004734 Polyphenylene sulfide Substances 0.000 abstract description 4
- GJQLBGWSDGMZKM-UHFFFAOYSA-N ethylhexyl palmitate Chemical compound CCCCCCCCCCCCCCCC(=O)OC(CC)CCCCC GJQLBGWSDGMZKM-UHFFFAOYSA-N 0.000 abstract description 4
- 150000002191 fatty alcohols Chemical class 0.000 abstract description 4
- -1 polyoxyethylene Polymers 0.000 abstract description 4
- 229920000069 polyphenylene sulfide Polymers 0.000 abstract description 4
- 125000005375 organosiloxane group Chemical group 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 9
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 description 9
- 229940037312 stearamide Drugs 0.000 description 7
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 4
- 239000004593 Epoxy Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 125000000217 alkyl group Chemical group 0.000 description 3
- 125000000753 cycloalkyl group Chemical group 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000006750 UV protection Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 230000004224 protection Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000012855 volatile organic compound Substances 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- OENIXTHWZWFYIV-UHFFFAOYSA-N 2-[4-[2-[5-(cyclopentylmethyl)-1h-imidazol-2-yl]ethyl]phenyl]benzoic acid Chemical group OC(=O)C1=CC=CC=C1C(C=C1)=CC=C1CCC(N1)=NC=C1CC1CCCC1 OENIXTHWZWFYIV-UHFFFAOYSA-N 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- GLUUGHFHXGJENI-UHFFFAOYSA-N diethylenediamine Natural products C1CNCCN1 GLUUGHFHXGJENI-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000009775 high-speed stirring Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
-
- 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
- C09D5/03—Powdery paints
- C09D5/033—Powdery paints characterised by the additives
-
- 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
-
- 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
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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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)
- Paints Or Removers (AREA)
Abstract
The invention discloses an ultra-weather-resistant thermosetting powder coating which comprises, by weight, 40-50 parts of an organic silicon modified polyurethane resin, 5-7 parts of polyphenylene sulfide, 6-8 parts of a curing agent, 2-4 parts of a polyether modified organosiloxane, 1-3 parts of a dispersing agent, 10-15 parts of a filler, 0.2-0.4 part of ethylhexyl palmitate, 0.5-0.8 part of dialkyl citrate, 12-14 parts of a weather-resistant agent, 1-2 parts of β - (3, 4-epoxycycloalkyl) alkyltrialkoxysilane and 0.2-0.4 part of polyoxyethylene fatty alcohol ether.
Description
Technical Field
The invention belongs to the technical field of powder coatings, and particularly relates to an ultra-weather-resistant thermosetting powder coating.
Background
The thermosetting powder coating does not discharge VOC (volatile organic compounds), has no pollution, high utilization rate, low energy consumption and simple process, and is a 4E type (high production efficiency, excellent coating performance, ecological environmental protection and economy) coating which is accepted by people at present. At present, the paint is mainly applied to the fields of metal coating, household appliances, automobiles, aluminum materials and the like. According to statistics, the consumption of thermosetting powder coating in China is 105 ten thousand tons in 2012, 112 ten thousand tons in 2013, 124 ten thousand tons in 2014, increases to about 135 ten thousand tons in 2015, has the sales volume of 142 ten thousand tons in 2016 and reaches 160.5 ten thousand tons in 2017, and shows a trend of increasing year by year. The thermosetting powder coating mainly comprises an epoxy resin powder coating, a polyester powder coating, a polyurethane powder coating, an acrylic acid powder coating, a fluorocarbon powder coating, a mixed powder coating, an Ultraviolet (UV) curing powder coating and the like. The existing thermosetting powder coating has poor wettability and adhesion and poor weather resistance.
Disclosure of Invention
Aiming at the problems of the existing super-weather-resistant thermosetting powder coating, the invention provides a super-weather-resistant thermosetting powder coating.
In order to solve the technical problems, the invention adopts the technical scheme that:
an ultraweatherable thermosetting powder coating, wherein: the paint comprises the following components in parts by weight:
preferably, the super weatherable thermosetting powder coating, wherein: the curing agent comprises 2-4 parts of diaminocyclohexane, 3-5 parts of diethylenetriamine and 2-4 parts of trimethylhexamethylenediamine.
Preferably, the super weatherable thermosetting powder coating, wherein: the dispersing agent is one of octadecanamide, vinyl distearamide and eicosapentaenoic acid.
Preferably, the super weatherable thermosetting powder coating, wherein: the filler comprises 2-4 parts of vanadium nitride, 1-3 parts of titanium carbide and 0.5-1 part of aluminum boride.
Preferably, the super weatherable thermosetting powder coating, wherein: the weather resistant agent comprises 2-4 parts of Nb4AlC33-5 parts of Ce0.8Gd0.2O1.9And 1-3 parts of yttrium oxide.
Preferably, the super weatherable thermosetting powder coating, wherein: also comprises 0.6-1 part of dioctyltin.
Preferably, the super weatherable thermosetting powder coating, wherein: also comprises 0.5-2 parts of N, N' -diethyl piperazine.
Preferably, the super weatherable thermosetting powder coating, wherein: also comprises 0.5-2 parts of 2, 4, 4-trimethyl-2-pentene.
Preferably, the super weatherable thermosetting powder coating, wherein: the number average molecular weight of the organic silicon modified polyurethane resin is 10000-30000.
Has the advantages that:
(1) the super weather-resistant thermosetting powder coating disclosed by the invention has excellent outdoor exposure performance, impact resistance, adhesive force and weather resistance.
(2) The ultra-weather-resistant thermosetting powder coating has the advantages that the polyphenylene sulfide improves the mechanical strength, high temperature resistance, chemical resistance and thermal stability of the coating, the polyether modified organic siloxane improves the leveling property and uniformity of the polyether modified organic siloxane, the ethylhexyl palmitate and the dialkyl citrate synergistically improve the thermal stability and weather resistance of the powder coating, β - (3, 4-epoxy cycloalkyl) alkyl trialkoxysilane improves the compatibility of a filler and organic silicon modified polyurethane resin, and the polyoxyethylene fatty alcohol ether improves the low-temperature cracking performance and high-temperature flexibility of the coating.
Detailed Description
The following examples further illustrate embodiments of the present invention. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The invention provides an ultra-weather-resistant thermosetting powder coating, which comprises the following components in part by weight: the paint comprises the following components in parts by weight:
the organic silicon modified polyurethane resin has excellent heat resistance and weather resistance, the polyphenylene sulfide improves the mechanical strength, high temperature resistance, chemical resistance and heat stability of the coating, the polyether modified organic siloxane promotes the coating to form a flat, smooth and uniform coating film in the drying film forming process, the surface tension of a finishing liquid can be effectively reduced, the leveling property and the uniformity of the coating film are improved, the heat stability and the weather resistance of the powder coating are improved by the cooperation of ethylhexyl palmitate and dialkyl citrate, the compatibility of β - (3, 4-epoxy cycloalkyl) alkyl trialkoxysilane improves the filler and the organic silicon modified polyurethane resin, and the low-temperature cracking performance and the high-temperature flexibility of the coating are improved by polyoxyethylene fatty alcohol ether.
As another embodiment of the present disclosure, wherein: the curing agent comprises 2-4 parts of diaminocyclohexane, 3-5 parts of diethylenetriamine and 2-4 parts of trimethylhexamethylenediamine.
As another embodiment of the present disclosure, wherein: the dispersant is one of octadecanamide, vinyl bis-stearamide and eicosapentaenoic acid.
As another embodiment of the present disclosure, wherein: the filler comprises 2-4 parts of vanadium nitride, 1-3 parts of titanium carbide and 0.5-1 part of aluminum boride. Vanadium nitride, titanium carbide and aluminum boride are particle type addition additives, and the addition additives are taken as an integral additive and act synergistically with each other, so that the ultraviolet resistance, the water resistance, the high temperature resistance, the low temperature resistance and the weather resistance of the coating can be further improved; vanadium nitride can improve the ultraviolet resistance, high temperature resistance and low temperature resistance of the coating, and titanium carbide can improve the waterproof performance and weather resistance of the coating; the aluminum boride can improve the high temperature resistance, low temperature resistance and weather resistance of the coating. Wherein, the particle size of vanadium nitride, titanium carbide and aluminum boride should be limited, and the particle size of each is preferably 80-100 nm.
As another embodiment of the present disclosure, wherein: the weather resisting agent comprises 2-4 parts of Nb4AlC33-5 parts of Ce0.8Gd0.2O1.9And 1-3 parts of yttrium oxide.
As another embodiment of the present disclosure, wherein: also comprises 0.6-1 part of dioctyltin.
As another embodiment of the present disclosure, wherein: also comprises 0.5-2 parts of N, N' -diethyl piperazine. The best curing effect is achieved by adding dioctyl tin and N, N' -diethyl piperazine for catalyzing resin curing and synergistic effect.
As another embodiment of the present disclosure, wherein: also comprises 0.5-2 parts of 2, 4, 4-trimethyl-2-pentene. After the 2, 4, 4-trimethyl-2-pentene is combined with the organic silicon modified polyurethane resin, the expansion and shrinkage amplitude of the coating at high and low temperatures can be reduced, and the adhesion property of the powder coating can be improved, so that the weather resistance of the powder coating is improved.
As another embodiment of the present disclosure, wherein: the number average molecular weight of the organic silicon modified polyurethane resin is 10000-30000.
A preparation method of an ultra-weather-resistant thermosetting powder coating comprises the following steps:
organosilicon modified polyurethane resin, polyphenylene sulfide, a curing agent, polyether modified organic siloxane, a dispersing agent, a filler, ethylhexyl palmitate, dialkyl citrate, a weather-resistant agent, β - (3, 4-epoxy cycloalkyl) alkyl trialkoxy silane, polyoxyethylene fatty alcohol ether, dioctyl tin, N' -diethyl piperazine, 2, 4, 4-trimethyl-2-pentene are added into a high-speed stirring pot, stirred for 3 to 6 minutes, extruded by a reciprocating damping type single-screw extruder, cooled and crushed into fine fragments, and the fragments are added into air for grading, grinding, crushing and screening to prepare the super weather-resistant powder coating without influencing the gluing.
Specific examples and comparative examples are listed below:
example 1:
the super weather-resistant thermosetting powder coating comprises the following components in parts by weight:
curing agent bag2 parts of diaminocyclohexane, 3 parts of diethylenetriamine and 2 parts of trimethylhexamethylenediamine; the dispersant is octadecanamide; the filler comprises 2 parts of vanadium nitride, 1 part of titanium carbide and 0.5 part of aluminum boride; the weather resistant agent comprises 2 parts of Nb4AlC33 parts of Ce0.8Gd0.2O1.9And 1 part yttria; the number average molecular weight of the silicone-modified polyurethane resin was 10000.
Example 2:
the super weather-resistant thermosetting powder coating comprises the following components in parts by weight:
the curing agent comprises 3 parts of diaminocyclohexane, 4 parts of diethylenetriamine and 3 parts of trimethylhexamethylenediamine; the dispersing agent is vinyl bis stearamide; the filler comprises 3 parts of vanadium nitride, 2 parts of titanium carbide and 0.6 part of aluminum boride; the weather resisting agent comprises 3 parts of Nb4AlC34 parts of Ce0.8Gd0.2O1.9And 2 parts yttria; the number average molecular weight of the silicone-modified polyurethane resin is 20000.
Example 3:
the super weather-resistant thermosetting powder coating comprises the following components in parts by weight:
the curing agent comprises 4 parts of diaminocyclohexane, 5 parts of diethylenetriamine and 4 parts of trimethylhexamethylenediamine; the dispersing agent is vinyl bis stearamide; the filler comprises 4 parts of vanadium nitride, 3 parts of titanium carbide and 1 part of aluminum boride; the weather resisting agent comprises 4 parts of Nb4AlC35 portions ofCe0.8Gd0.2O1.9And 3 parts yttria; the number average molecular weight of the silicone-modified polyurethane resin was 30000.
Comparative example 1:
the super weather-resistant thermosetting powder coating comprises the following components in parts by weight:
the curing agent comprises 2 parts of diaminocyclohexane, 3 parts of diethylenetriamine and 2 parts of trimethylhexamethylenediamine; the dispersant is octadecanamide; the filler comprises 2 parts of vanadium nitride, 1 part of titanium carbide and 0.5 part of aluminum boride; the weather resistant agent comprises 2 parts of Nb4AlC33 parts of Ce0.8Gd0.2O1.9And 1 part yttria; the number average molecular weight of the silicone-modified polyurethane resin was 10000.
Comparative example 2:
the super weather-resistant thermosetting powder coating comprises the following components in parts by weight:
the curing agent comprises 2 parts of diaminocyclohexane, 3 parts of diethylenetriamine and 2 parts of trimethylhexamethylenediamine; the dispersant is octadecanamide; the filler comprises 2 parts of vanadium nitride, 1 part of titanium carbide and 0.5 part of aluminum boride; the weather resistant agent comprises 2 parts of Nb4AlC33 parts of Ce0.8Gd0.2O1.9And 1 part yttria; the number average molecular weight of the silicone-modified polyurethane resin was 10000.
Comparative example 3:
the super weather-resistant thermosetting powder coating comprises the following components in parts by weight:
the curing agent comprises 3 parts of diaminocyclohexane, 4 parts of diethylenetriamine and 3 parts of trimethylhexamethylenediamine; the dispersing agent is vinyl bis stearamide; the filler comprises 2 parts of titanium carbide and 0.6 part of aluminum boride; the weather resisting agent comprises 3 parts of Nb4AlC34 parts of Ce0.8Gd0.2O1.9And 2 parts yttria; the number average molecular weight of the silicone-modified polyurethane resin is 20000.
Comparative example 4:
the super weather-resistant thermosetting powder coating comprises the following components in parts by weight:
the curing agent comprises 3 parts of diaminocyclohexane, 4 parts of diethylenetriamine and 3 parts of trimethylhexamethylenediamine; the dispersing agent is vinyl bis stearamide; the filler comprises 3 parts of vanadium nitride and 2 parts of titanium carbide; the weather resisting agent comprises 3 parts of Nb4AlC34 parts of Ce0.8Gd0.2O1.9And 2 parts yttria; the number average molecular weight of the silicone-modified polyurethane resin is 20000.
Comparative example 5:
the super weather-resistant thermosetting powder coating comprises the following components in parts by weight:
the curing agent comprises 4 parts of diaminocyclohexane, 5 parts of diethylenetriamine and 4 parts of trimethylhexamethylenediamine; the dispersing agent is vinyl bis stearamide; the filler comprises 4 parts of vanadium nitride, 3 parts of titanium carbide and 1 part of aluminum boride; the weather resisting agent comprises 4 parts of Nb4AlC35 parts of Ce0.8Gd0.2O1.9And 3 parts yttria; number of Silicone-modified polyurethane resinThe average molecular weight was 30000.
Comparative example 6:
the super weather-resistant thermosetting powder coating comprises the following components in parts by weight:
the curing agent comprises 4 parts of diaminocyclohexane, 5 parts of diethylenetriamine and 4 parts of trimethylhexamethylenediamine; the dispersing agent is vinyl bis stearamide; the filler comprises 4 parts of vanadium nitride, 3 parts of titanium carbide and 1 part of aluminum boride; the weather resisting agent comprises 4 parts of Nb4AlC35 parts of Ce0.8Gd0.2O1.9And 3 parts yttria; the number average molecular weight of the silicone-modified polyurethane resin was 30000.
The results of the performance tests of the examples and comparative examples are set forth below:
as can be seen from the data of the above examples 1-3 and comparative examples 1-6, the super weather-resistant thermosetting powder coating of the invention has excellent outdoor exposure, impact resistance, adhesion and weather resistance.
The embodiments of the present invention have been described in detail with reference to the examples, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.
Claims (9)
1. An ultra-weather-resistant thermosetting powder coating is characterized in that: the paint comprises the following components in parts by weight:
2. the super weatherable thermosetting powder coating of claim 1, characterized by: the curing agent comprises 2-4 parts of diaminocyclohexane, 3-5 parts of diethylenetriamine and 2-4 parts of trimethylhexamethylenediamine.
3. The super weatherable thermosetting powder coating of claim 1, characterized by: the dispersing agent is one of octadecanamide, vinyl distearamide and eicosapentaenoic acid.
4. The super weatherable thermosetting powder coating of claim 1, characterized by: the filler comprises 2-4 parts of vanadium nitride, 1-3 parts of titanium carbide and 0.5-1 part of aluminum boride.
5. The super weatherable thermosetting powder coating of claim 1, characterized by: the weather resistant agent comprises 2-4 parts of Nb4AlC33-5 parts of Ce0.8Gd0.2O1.9And 1-3 parts of yttrium oxide.
6. The super weatherable thermosetting powder coating of claim 1, characterized by: also comprises 0.6-1 part of dioctyltin.
7. The super weatherable thermosetting powder coating of claim 1, characterized by: also comprises 0.5-2 parts of N, N' -diethyl piperazine.
8. The super weatherable thermosetting powder coating of claim 1, characterized by: also comprises 0.5-2 parts of 2, 4, 4-trimethyl-2-pentene.
9. The super weatherable thermosetting powder coating of claim 1, characterized by: the number average molecular weight of the organic silicon modified polyurethane resin is 10000-30000.
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