CN110527412A - A kind of solidification thermal transfer powder of environmental protection and preparation method thereof - Google Patents
A kind of solidification thermal transfer powder of environmental protection and preparation method thereof Download PDFInfo
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- CN110527412A CN110527412A CN201911003335.8A CN201911003335A CN110527412A CN 110527412 A CN110527412 A CN 110527412A CN 201911003335 A CN201911003335 A CN 201911003335A CN 110527412 A CN110527412 A CN 110527412A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/68—Polyesters containing atoms other than carbon, hydrogen and oxygen
- C08G63/695—Polyesters containing atoms other than carbon, hydrogen and oxygen containing silicon
- C08G63/6954—Polyesters containing atoms other than carbon, hydrogen and oxygen containing silicon derived from polxycarboxylic acids and polyhydroxy compounds
- C08G63/6956—Dicarboxylic acids and dihydroxy compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/78—Preparation processes
- C08G63/82—Preparation processes characterised by the catalyst used
- C08G63/85—Germanium, tin, lead, arsenic, antimony, bismuth, titanium, zirconium, hafnium, vanadium, niobium, tantalum, or compounds thereof
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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
- 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
- C09D167/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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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
- C09D5/03—Powdery paints
- C09D5/033—Powdery paints characterised by the additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses solidification thermal transfer powder of a kind of environmental protection and preparation method thereof, and thermal transfer powder is prepared by following weight percent raw material: polyester resin 50~60%, curing agent 1~3%, levelling agent 0.5~1.5%, transfer wax 0.5~3%, styrax 0.3~0.8%, blanc fixe 34~40%, pigment 0.5~3%, salt spray resistance auxiliary agent 0.5~5%.The thermal transfer powder that the present invention obtains is polyester/HAA system thermal transfer type powdery paints, asepsis environment-protecting and has excellent thermal transfer effect, and transfer rear surface is smooth, lines is clear, pattern is true to nature, and not viscous transfer paper, paper-tear picture are easy.
Description
Technical field
The present invention relates to powder coating technology field, solidification thermal transfer powder of specifically a kind of environmental protection and preparation method thereof.
Background technique
Thermal transfer is also referred to as heat sublimation, is to be printed on various patterns on high-precision paper using transfer ink, and turned using heat
Printing apparatus is heated to set temperature in a short time, is transferred to the pattern on transfer paper in the materials such as aluminum profile coating
A kind of special process.The technology is capable of providing bright in luster, and level transfer pattern abundant reaches the purpose of imitation wood line, stone image,
The use of a large amount of non-renewable natural resources can be saved, therefore is well received by the public from after occurring, market increases quick.To glass
Plate, metal plate etc. need when thermal transfer first coating thermal transfer coating on its surface, and thermal transfer coating is mostly that liquid applies at present
Expect, has used organic solvent etc. that often there is toxicity in coating, be harmful to the human body, have pollution to environment.Powdery paints is a kind of
It is novel, be free of solvent, easily operated, the environmental protection coating material of 100% solid powdery, utilization efficiency is high.
But the existing thermal transfer powdery paints that is used for is there are not smooth enough the exquisiteness in surface, and texture is not enough clearly forced after transfer
Very, the defects of thermal deformation leads to surface breakdown can occur when transferring hot-working.And it currently, is applied on the market for thermal transfer type powder
Material is mainly polyester/TGIC system, and polyester/HAA system thermal transfer type powdery paints is less.Since three-glycidyl isocyanide is urinated
Acid esters (TGIC) has certain physiological-toxicity, is included in eliminates the backward production facilities by Ministry of Industry and Information at present, therefore develop in the market
It has been trend of the times that one kind, which can substitute the cured powdery paints of TGIC, in numerous TGIC substitute products, hydroxyalkyl amide
(HAA, product name T105) is current most popular one kind, and performance is close to TGIC curing system and asepsis environment-protecting.Often at present
Rule application field has had some HAA cured powdery paints supply market, but is commercialized in thermal transfer art of powder coatings
Product it is seldom.
Summary of the invention
The object of the present invention is to provide solidification thermal transfer powder of a kind of environmental protection and preparation method thereof, which is poly-
Ester/HAA system thermal transfer type powdery paints, asepsis environment-protecting and has excellent thermal transfer effect, and rear surface is smooth for transfer, line
Road is clear, pattern is true to nature, and not viscous transfer paper, paper-tear picture are easy.
Technical solution of the present invention is realized in the following manner:
A kind of solidification thermal transfer powder of environmental protection, is prepared by following weight percent raw material: polyester resin 50~60%, solidification
Agent 1~3%, levelling agent 0.5~1.5%, transfer wax 0.5~3%, styrax 0.3~0.8%, blanc fixe 34~40%, pigment
0.5~3%, salt spray resistance auxiliary agent 0.5~5%.
The polyester resin is mainly obtained by the monomer component of following mass percentage by melt polycondensation reaction: new penta
Glycol 24~40%, terephthalic acid (TPA) 27~33%, M-phthalic acid 28~37%, phenyl silicone 1~15%, trihydroxy methyl
Propane 0.1~0.5%, Mono-n-butyltin 0.01~0.2%.The polyester resin acid value is 40~55mgKOH/g, and 200 DEG C molten
2000~3500mPa.s of body viscosity.
The curing agent is mixed to get by HAA and PT912 with weight ratio 1:1.
The levelling agent activity is 66~68%, and density is 0.45~0.6g/cm3。
The transfer wax is polytetrafluoroethylwax wax modified poly ethylene micro mist wax, polyethylene wax micro mist, polyamide wax micropowder, gathers
One of tetrafluoroethene wax micro mist or two or more mixtures.
The size of the blanc fixe is 10~100nm.
The pigment is one in rutile titanium dioxide, phthalocyanine blue, phthalocyanine green, iron oxide yellow, insulation carbon black, F3RK bright red
Kind or two or more hybrid pigments.Further, using paint as import pigment.
The salt spray resistance auxiliary agent is boron oxide.
The function introduction of each raw material used in the present invention is as follows:
Polyester resin is the heterochain producing high-molecular being branched using polyalcohol, polyacid through line style made of high-temperature polycondensation or slightly
Close object.Polyester resin of the present invention is applicable in HAA curing agent and is solidified, and has shorter curing time, the powder of preparation
Last paint coatings have good transferring effect, while having good levelability and excellent mechanical performance etc..
HAA is the general name of hydroxyalkyl amide class curing agent, is a kind of very important curing agent in polyester powder coating, is
A kind of reactive compound containing polyhydroxy functional groups.It acts not only as the crosslinking agent of powdery paints, it can also be used to aqueous, molten
The crosslinking agent of agent coating.The curing mechanism of HAA is its hydroxyl and the esterification of polyester carboxyl, and it is secondary for reacting the water of generation
Product.Using film made of HAA, gloss retention is still maintained at 50% or more after shining, and water-disintegrable, thermal stability and UV are steady
Qualitative is comparable relative to TGIC, but toxicity is far below TGIC, and amount ratio TGIC is few, and solidification temperature ratio TGIC is low, therefore phase
More environmentally friendly for TGIC, coating cost is lower, and energy-saving effect is more significant.Contain tertiary amine in HAA structure, powdery paints can be made to have
Have good tribocharging.
PT912 is the mixture of 60% terephthalic acid diglycidyl ester and 40% trimellitic acid three-glycidyl ester.
PT912 and HAA is used in combination, Primid/PT912 dual cure systems environmental protection powder toxicity is low, incorporates polyester/TGIC and gathers
The advantages of ester/Primid, the shortcomings that being avoided as much as both.
Levelling agent is a kind of common coating additive, it can promote coating formed during the drying and film forming process one it is smooth,
Smooth, uniform film can reduce rapidly the surface tension of coating, and coating is promoted quickly to flow before film-forming, eliminate
Or the surface defects such as tangerine peel, brush mark, ripple, shrinkage cavity are reduced, improve coating film gloss and vividness.
It transfers wax to be applied in thermal transfer powdery paints, paper-tear picture is easy after addition and transfer lines is clear, while can be increased
Strong film plumpness and smooth feeling, improve scratch resistance.Polytetrafluoroethylwax wax modified polyethylene wax micro mist has high hardness, has and disappears
Light, smooth, scratch resistance, prevent adhesion and stain resistant effect.Polyethylene wax micro mist hardness with higher, wearability is good, prevents adhesion
And stain resistant, resistance to marring, mar-resistance and smooth feel.Polyamide wax micropowder resist blocking and that, extinction effect are obvious, grinability
With smoothness, recoatability, anti-settling property, good permeability, salt fog and dampproof effect can be promoted, the levelability on surface when improving baking.
Polytetrafluoroethylwax wax micro mist molecular structure stabilized has excellent chemical resistance, electrical insulating property, anti-flammability, self-lubrication, heat steady
Qualitative, high-weatherability, ageing resistance, heat-resisting quantity, and anti-scratch, scratch resistant, good hand touch, glossiness are good.
A kind of degasser of the styrax as powdery paints can eliminate the pin hole bubble etc. that coating generates in the curing process
Disadvantage, moreover it is possible to it is well miscible with levelling agent, improve film coated surface tension, adjusts film coated surface levelling.Styrax can effectively be gone
Flash removed, and more smooth at chamfering, raising precision can be made, enhance workpiece gloss degree, solution manually polishes indeterminable ask
Topic.
Blanc fixe is mixed by barium sulfide solution with the saltcake solution being added after removing calcium, magnesium, is carried out in 80 DEG C anti-
It answers, generates precipitating, after suction filtration, washing and pickling, adjust pH value 5~6, refilter, dry, pulverize obtained.Also baryta yellow can be used
Halogen and saltcake solution reaction are made.Blanc fixe appearance is white amorphous powder, and relative density is 4.50 (15 DEG C), is melted
Point is 1580 DEG C.Due to refractive index with higher (1.63~1.65), it is whiter and have certain covering power to show color.
Blanc fixe can improve fast light product, weather-proof, chemically-resistant and electrochemical corrosion and product decoration effect, enhance the anti-of coating
Impact strength.Nanofiller not only can be improved the mechanical property of film, also contributed to due to its special nano effect
Improve ageing-resistant performance, corrosion resistance and the radiation resistance etc. of film.Adding suitable nanoscale blanc fixe can
With the mechanical property, ageing-resistant performance, weather resistance etc. for improving film.
Import pigment mass stabilization, strong coloring force, lovely luster, environmental protection, easily dispersion, high temperature resistant and good weatherability.
Salt spray resistance auxiliary agent can generate electricresistance effect in the coating, generate potential difference with metal cation, while generating masking
Effect；Inert inorganic complexing layer can be generated with metal, the effects of to prevent block, corrosion, delay metal erosion to reach
Effect.It is extremely significant for the tolerance of salt air corrosion to aoxidize boron component, in Primid/PT912 dual cure systems environmental protection powder
The ability that boron oxide can make coating system significantly improve resisting salt fog corrosion is added in coating.
The preparation method of thermal transfer powder the following steps are included: weigh polyester resin, curing agent, levelling by weight percentage
Agent, transfer wax, styrax, blanc fixe, pigment, salt spray resistance auxiliary agent, are pre-mixed, melting extrusion, cooling broken, powder
It is broken, it is sent into automatic sieving recycling machine and is sieved, sieving qualified powder is thermal transfer powder finished product obtained.
Further, the preparation method of thermal transfer powder the following steps are included: weigh polyester resin, solidification by weight percentage
Agent, levelling agent, transfer wax, styrax, blanc fixe, pigment, salt spray resistance auxiliary agent, carry out premixing 3-5min, melting extrusion,
Squeezing out area's temperature is 100-110 DEG C, and squeezing out two area's temperature is 110-120 DEG C, screw speed 40-45Hz, cooling broken, powder
It is broken, it is sent into automatic sieving recycling machine and is sieved, sieving qualified powder is thermal transfer powder finished product obtained.
The application method of thermal transfer powder: being made thermal transfer bottom powder template with thermal transfer powder, and template obtained is turned by heat
It prints Pyrograph machine and carries out thermal transfer, thermal transfer template is made.
The beneficial effects of the present invention are:
Thermal transfer powder of the invention is combined as curing agent using polyester resin as resin component, using PT912 and HAA,
The advantages of Primid/PT912 dual cure systems environmental protection powder toxicity is low, incorporates polyester/TGIC and polyester/Primid, and to the greatest extent
The shortcomings that possibly avoiding both.The thermal transfer powder obtained through the invention is polyester/HAA system thermal transfer type powder
Coating, asepsis environment-protecting and has excellent thermal transfer effect, and transfer rear surface is smooth, lines is clear, pattern is true to nature, not viscous transfer
Paper, paper-tear picture are easy, while not influencing hardness of film, and coating leveling can be good with mechanical performance, weather resistance, there is certain salt tolerant
Mist.
Specific embodiment
For the more detailed introduction present invention, below with reference to embodiment, the present invention will be further described.
Embodiment 1
A kind of solidification thermal transfer powder of environmental protection, is prepared by following weight percent raw material: polyester resin 50%, curing agent 1%,
Levelling agent 1.5%, transfer wax 1.5%, styrax 0.5%, blanc fixe 40%, import pigment 0.5%, boron oxide 5%.
The polyester resin is mainly obtained by the monomer component of following mass percentage by melt polycondensation reaction: new penta
Glycol 40%, terephthalic acid (TPA) 27%, M-phthalic acid 28%, phenyl silicone 4%, trihydroxy methyl propane 0.5%, monobutyl
Tin oxide 0.2%.The polyester resin acid value is 40~55mgKOH/g, 200 DEG C of 2000~3500mPa.s of melt viscosity.
The curing agent is mixed to get by HAA and PT912 with weight ratio 1:1.
The levelling agent activity is 66~68%, and density is 0.45~0.6g/cm3。
The transfer wax is polyethylene wax micro mist.
The size of the blanc fixe is 10~100nm.
The import pigment is rutile titanium dioxide.
The preparation method of thermal transfer powder the following steps are included: weigh polyester resin, curing agent, levelling by weight percentage
Agent, transfer wax, styrax, blanc fixe, import pigment, boron oxide, carry out premixing 3min, and melting extrusion squeezes out an area
Temperature is 100 DEG C, and squeezing out two area's temperature is 120 DEG C, screw speed 45Hz, cooling broken, is crushed, and automatic sieving recycling is sent into
Machine is sieved, and sieving qualified powder is thermal transfer powder finished product obtained.
Embodiment 2
A kind of solidification thermal transfer powder of environmental protection, is prepared by following weight percent raw material: polyester resin 55%, curing agent 2%,
Levelling agent 1%, transfer wax 1%, styrax 0.5%, blanc fixe 37%, import pigment 1.3%, boron oxide 2.2%.
The polyester resin is mainly obtained by the monomer component of following mass percentage by melt polycondensation reaction: new penta
Glycol 32%, terephthalic acid (TPA) 30%, M-phthalic acid 32%, phenyl silicone 5%, trihydroxy methyl propane 0.3%, monobutyl
Tin oxide 0.1%.The polyester resin acid value is 40~55mgKOH/g, 200 DEG C of 2000~3500mPa.s of melt viscosity.
The curing agent is mixed to get by HAA and PT912 with weight ratio 1:1.
The levelling agent activity is 66~68%, and density is 0.45~0.6g/cm3。
The transfer wax is polytetrafluoroethylwax wax modified poly ethylene micro mist wax.
The size of the blanc fixe is 10~100nm.
The import pigment is that F3RK is bright red.
The preparation method of thermal transfer powder the following steps are included: weigh polyester resin, curing agent, levelling by weight percentage
Agent, transfer wax, styrax, blanc fixe, import pigment, boron oxide, carry out premixing 4min, and melting extrusion squeezes out an area
Temperature is 105 DEG C, and squeezing out two area's temperature is 115 DEG C, screw speed 42Hz, cooling broken, is crushed, and automatic sieving recycling is sent into
Machine is sieved, and sieving qualified powder is thermal transfer powder finished product obtained.
Embodiment 3
A kind of solidification thermal transfer powder of environmental protection, is prepared by following weight percent raw material: polyester resin 60%, curing agent 3%,
Levelling agent 0.5%, transfer wax 0.5%, styrax 0.3%, blanc fixe 34%, import pigment 0.5%, boron oxide 1.2%.
The polyester resin is mainly obtained by the monomer component of following mass percentage by melt polycondensation reaction: new penta
Glycol 24%, terephthalic acid (TPA) 33%, M-phthalic acid 37%, phenyl silicone 6%, trihydroxy methyl propane 0.1%, monobutyl
Tin oxide 0.01%.The polyester resin acid value is 40~55mgKOH/g, 200 DEG C of 2000~3500mPa.s of melt viscosity.
The curing agent is mixed to get by HAA and PT912 with weight ratio 1:1.
The levelling agent activity is 66~68%, and density is 0.45~0.6g/cm3。
The transfer wax is the mixture of polyamide wax micropowder, polytetrafluoroethylwax wax micro mist.
The size of the blanc fixe is 10~100nm.
The import pigment is iron oxide yellow.
The preparation method of thermal transfer powder the following steps are included: weigh polyester resin, curing agent, levelling by weight percentage
Agent, transfer wax, styrax, blanc fixe, import pigment, boron oxide, carry out premixing 5min, and melting extrusion squeezes out an area
Temperature is 110 DEG C, and squeezing out two area's temperature is 110 DEG C, screw speed 40Hz, cooling broken, is crushed, and automatic sieving recycling is sent into
Machine is sieved, and sieving qualified powder is thermal transfer powder finished product obtained.
Application Example
Thermal transfer bottom powder template is made in the thermal transfer powder made from embodiment 1-3 respectively, and template obtained is scalded by thermal transfer
Picture machine carries out thermal transfer, and thermal transfer template is made.
The various performance indicators of film on test gained thermal transfer template, test result is as follows shown in table:
In table, levelling is PCI grade, and 1-10 grades, numerical value is bigger, and flow leveling is more excellent, and numerical value is smaller, and levelling is poorer；Hardness
It is detected by GB/T6739-2006 standard.
As it can be seen that thermal transfer powder produced by the present invention have excellent thermal transfer effect, clear patterns, easy paper-tear picture after transfer,
Hardness of film is not influenced simultaneously, and coating leveling can be good with mechanical performance, salt spray resistance.
Claims (6)
1. a kind of solidification thermal transfer powder of environmental protection, which is characterized in that the thermal transfer powder is prepared by following weight percent raw material
It forms: polyester resin 50~60%, curing agent 1~3%, levelling agent 0.5~1.5%, transfer wax 0.5~3%, styrax 0.3~
0.8%, blanc fixe 34~40%, pigment 0.5~3%, salt spray resistance auxiliary agent 0.5~5%；
The polyester resin is obtained by the monomer component of following mass percentage by melt polycondensation reaction: 24~40% new penta
Glycol, 0.1~0.5% trihydroxy methyl propane, 1~15% phenyl silicone, 27~33% terephthalic acid (TPA)s, 28~37% isophthalic
Dioctyl phthalate, 0.01~0.2% Mono-n-butyltin；The polyester resin acid value reaches 40~55mgKOH/g, 200 DEG C of melt viscosities
2000~3500mPa.s；
The curing agent is mixed to get by HAA and PT912 with weight ratio 1:1.
2. environmentally friendly solidification thermal transfer powder according to claim 1, which is characterized in that the levelling agent activity is 66~68%,
Density is 0.45~0.6g/cm3。
3. environmentally friendly solidification thermal transfer powder according to claim 1, which is characterized in that the transfer wax is polytetrafluoroethylwax wax
One of modified poly ethylene micro mist wax, polyethylene wax micro mist, polyamide wax micropowder, polytetrafluoroethylwax wax micro mist or two kinds with
Upper mixture.
4. environmentally friendly solidification thermal transfer powder according to claim 1, which is characterized in that the size of the blanc fixe is 10
~100nm.
5. environmentally friendly solidification thermal transfer powder according to claim 1, which is characterized in that the pigment is rutile-type titanium dioxide
Titanium, phthalocyanine blue, phthalocyanine green, iron oxide yellow, insulation carbon black, F3RK be one of bright red or two or more hybrid pigments.
6. environmentally friendly solidification thermal transfer powder according to claim 1, which is characterized in that the preparation method of thermal transfer powder include with
Lower step:
Polyester resin, curing agent, levelling agent, transfer wax, styrax, blanc fixe, pigment, salt tolerant are weighed by weight percentage
Mist auxiliary agent, is pre-mixed, melting extrusion, cooling broken, is crushed, and is sent into automatic sieving recycling machine and is sieved, screening is qualified
Powder be thermal transfer powder finished product obtained.
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| CN112048236A (en) * | 2020-09-09 | 2020-12-08 | 黄山佳杰新材料科技有限公司 | Extinction type thermal transfer powder coating and preparation method and application thereof |
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Application publication date: 20191203 |