CN111808508A - Anti-ultraviolet powder coating and preparation method and application method thereof - Google Patents
Anti-ultraviolet powder coating and preparation method and application method thereof Download PDFInfo
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- CN111808508A CN111808508A CN202010771610.7A CN202010771610A CN111808508A CN 111808508 A CN111808508 A CN 111808508A CN 202010771610 A CN202010771610 A CN 202010771610A CN 111808508 A CN111808508 A CN 111808508A
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
- B05D1/04—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field
- B05D1/06—Applying particulate materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
- B05D7/26—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials synthetic lacquers or varnishes
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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
- 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
- C09D5/32—Radiation-absorbing paints
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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Abstract
The invention discloses an anti-ultraviolet powder coating, a preparation method and an application method thereof, wherein the anti-ultraviolet powder coating comprises the following raw materials in parts by weight: 40-60 parts of saturated carboxyl polyester resin, 30-50 parts of bisphenol A epoxy resin, 6-10 parts of curing agent, 0.5-1.5 parts of flatting agent, 0.8-1.5 parts of ultraviolet absorbent and 0.2-0.6 part of defoaming agent. After the powder coating is applied to a plate, the powder coating has excellent uvioresistant performance, can prevent the coating from aging, and has high adhesive force and impact resistance retention, so that the service life of the coating after the powder coating is cured is greatly prolonged.
Description
Technical Field
The invention relates to the technical field of powder coatings, in particular to an anti-ultraviolet powder coating and a preparation method and an application method thereof.
Background
Powder coatings represent a rapidly growing area in the overall coating technology. Because the VOC emission is almost zero, the rapid development of the VOC is driven by the environmental protection requirement. The requirements of global and Chinese environmental protection laws and regulations are more and more strict, and the development of the environmental protection powder coating industry is effectively promoted.
After the existing powder coating is applied to a plate, the plate is exposed outdoors and is easy to become brittle, the adhesive force is greatly reduced, and a white powder coating layer can also be yellowed, which is mainly caused by that ultraviolet rays accelerate the breakage of macromolecular chains and the degradation of plastics, so that the coating loses elasticity or toughness and becomes very brittle, the adhesive force is also reduced and falls off, and the coating loses the necessary isolating and anti-corrosion functions.
Disclosure of Invention
In view of the above, the invention provides an anti-ultraviolet powder coating, and a preparation method and an application method thereof.
An uvioresistant powder coating comprises the following raw materials in parts by weight:
preferably, the raw materials comprise the following components in parts by weight:
preferably, the saturated carboxyl polyester resin is synthesized by n-amyl alcohol, butanediol, isophthalic acid and benzyl triethyl amine chloride; the mass ratio of the n-amyl alcohol, the butanediol, the isophthalic acid and the benzyltriethylammonium chloride is 60-80:15-20:110-130: 2-5.
Preferably, the bisphenol A type epoxy resin has an average molecular weight of 4000-7000.
Preferably, the curing agent is one of TGIC, PT910, GMA and polyisocyanate.
Preferably, the leveling agent is polydimethylsiloxane or polyether polyester modified organic siloxane.
Preferably, the ultraviolet absorber is one of phenyl ortho-hydroxybenzoate, 2- (2 '-hydroxy-5' -methylphenyl) benzotriazole, 2, 4-dihydroxybenzophenone, and 2-hydroxy-4-methoxybenzophenone.
Preferably, the defoamer is a modified silicone defoamer.
A preparation method of an anti-ultraviolet powder coating comprises the following steps:
respectively drying saturated carboxyl polyester resin and bisphenol A epoxy resin at 40-60 deg.C for 20-30 min;
pulverizing the dried saturated carboxyl polyester resin and bisphenol A epoxy resin to 30-80 meshes to obtain mixed resin;
adding a curing agent, a flatting agent, an ultraviolet absorbent, a defoaming agent and mixed resin into a pre-mixer, and pre-mixing for 10-25min to obtain a mixed material;
adding the mixed materials into a double-screw extruder, and setting the temperature of a first zone as follows: 75-90 ℃, and setting the temperature of the second zone as follows: melting and extruding at the temperature of 115 ℃ and the temperature of a machine head of 120 ℃ to obtain an extrudate;
and tabletting the hot extruded material while the hot extruded material is hot, crushing the flaky extruded material after cooling, and sieving the powder through a 150-mesh and 250-mesh sieve to obtain the powder coating.
An application method of an anti-ultraviolet powder coating comprises the following steps:
sieving the powder coating by a 200-300-mesh sieve;
spraying the powder coating on the surface-treated plate by an electrostatic spray gun, wherein the thickness of the paint film is 80-120 mu m, and fully curing at 180-agent temperature of 200 ℃/10-15min to obtain the powder coating.
The invention provides an anti-ultraviolet powder coating, a preparation method and an application method thereof.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
An uvioresistant powder coating comprises the following raw materials in parts by weight:
wherein, the saturated carboxyl polyester resin is synthesized by n-amyl alcohol, butanediol, isophthalic acid and benzyl triethyl ammonium chloride; the mass ratio of n-amyl alcohol, butanediol, isophthalic acid and benzyl triethyl amine chloride is 60-80:15-20:110-130: 2-5; the average molecular weight of the bisphenol A epoxy resin is 4000-7000; the curing agent is one of TGIC, PT910, GMA and polyisocyanate; the flatting agent is polydimethylsiloxane or polyether polyester modified organic siloxane; the ultraviolet absorbent is one of phenyl ortho-hydroxybenzoate, 2- (2 '-hydroxy-5' -methylphenyl) benzotriazole, 2, 4-dihydroxybenzophenone and 2-hydroxy-4-methoxybenzophenone; the defoaming agent is a modified organic silicon defoaming agent.
A preparation method of an anti-ultraviolet powder coating comprises the following steps:
respectively drying saturated carboxyl polyester resin and bisphenol A epoxy resin at 40-60 deg.C for 20-30 min;
pulverizing the dried saturated carboxyl polyester resin and bisphenol A epoxy resin to 30-80 meshes to obtain mixed resin;
adding a curing agent, a flatting agent, an ultraviolet absorbent, a defoaming agent and mixed resin into a pre-mixer, and pre-mixing for 10-25min to obtain a mixed material;
adding the mixed materials into a double-screw extruder, and setting the temperature of a first zone as follows: 75-90 ℃, and setting the temperature of the second zone as follows: melting and extruding at the temperature of 115 ℃ and the temperature of a machine head of 120 ℃ to obtain an extrudate;
and tabletting the hot extruded material while the hot extruded material is hot, crushing the flaky extruded material after cooling, and sieving the powder through a 150-mesh and 250-mesh sieve to obtain the powder coating.
An application method of an anti-ultraviolet powder coating comprises the following steps:
sieving the powder coating by a 200-300-mesh sieve;
spraying the powder coating on the surface-treated plate by an electrostatic spray gun, wherein the thickness of the paint film is 80-120 mu m, and fully curing at 180-agent temperature of 200 ℃/10-15min to obtain the powder coating.
Detailed description of the preferred embodiment 1
An uvioresistant powder coating comprises the following raw materials in parts by weight:
wherein, the saturated carboxyl polyester resin is synthesized by n-amyl alcohol, butanediol, isophthalic acid and benzyl triethyl ammonium chloride; the mass ratio of n-amyl alcohol, butanediol, isophthalic acid and benzyl triethyl amine chloride is 60:20:130: 2; the average molecular weight of the bisphenol A epoxy resin is 4000-7000; the curing agent is TGIC; the flatting agent is polydimethylsiloxane; the ultraviolet absorbent is phenyl ortho-hydroxybenzoate; the defoaming agent is a modified organic silicon defoaming agent.
A preparation method of an anti-ultraviolet powder coating comprises the following steps:
respectively drying saturated carboxyl polyester resin and bisphenol A epoxy resin at 60 deg.C for 20 min;
pulverizing the dried saturated carboxyl polyester resin and bisphenol A epoxy resin to 30 meshes to obtain mixed resin;
adding a curing agent, a flatting agent, an ultraviolet absorbent, a defoaming agent and mixed resin into a pre-mixer, and pre-mixing for 25min to obtain a mixed material;
adding the mixed materials into a double-screw extruder, and setting the temperature of a first zone as follows: 75-80 ℃, and setting the temperature of the second zone as follows: melting and extruding at the temperature of 100 ℃ and 110 ℃ and the temperature of a head of 115 ℃ and 118 ℃ to obtain an extrudate;
and tabletting the hot extruded material while the hot extruded material is hot, cooling, crushing the flaky extruded material, and sieving the powder with a 150-mesh sieve to obtain the powder coating.
An application method of an anti-ultraviolet powder coating comprises the following steps:
sieving the powder coating with a 200-mesh sieve;
and spraying the powder coating on the surface-treated plate by using an electrostatic spray gun, wherein the thickness of a paint film is 80 mu m, and fully curing at 200 ℃/10min to obtain the powder coating.
Specific example 2
An uvioresistant powder coating comprises the following raw materials in parts by weight:
wherein, the saturated carboxyl polyester resin is synthesized by n-amyl alcohol, butanediol, isophthalic acid and benzyl triethyl ammonium chloride; the mass ratio of n-amyl alcohol, butanediol, isophthalic acid and benzyl triethyl amine chloride is 65:18:115: 3; the average molecular weight of the bisphenol A epoxy resin is 5000-7000; the curing agent is GMA; the leveling agent is polyether polyester modified organic siloxane; the ultraviolet absorbent is 2, 4-dihydroxy benzophenone; the defoaming agent is a modified organic silicon defoaming agent.
A preparation method of an anti-ultraviolet powder coating comprises the following steps:
respectively drying saturated carboxyl polyester resin and bisphenol A epoxy resin at 40-60 deg.C for 20-30 min;
pulverizing the dried saturated carboxyl polyester resin and bisphenol A epoxy resin to 40 meshes to obtain mixed resin;
adding a curing agent, a flatting agent, an ultraviolet absorbent, a defoaming agent and mixed resin into a pre-mixer, and pre-mixing for 15min to obtain a mixed material;
adding the mixed materials into a double-screw extruder, and setting the temperature of a first zone as follows: the temperature of the second zone is set to be between 80 and 90 ℃: melting and extruding at the temperature of between 100 and 110 ℃ and the temperature of a machine head of between 115 and 117 ℃ to obtain an extrudate;
and tabletting the hot extruded material while the hot extruded material is hot, cooling, crushing the flaky extruded material, and sieving the powder with a 180-mesh sieve to obtain the powder coating.
An application method of an anti-ultraviolet powder coating comprises the following steps:
sieving the powder coating with a 220-mesh sieve;
and spraying the powder coating on the surface-treated plate by using an electrostatic spray gun, wherein the thickness of a paint film is 100 mu m, and fully curing at 190 ℃/12min to obtain the powder coating.
Specific example 3
An uvioresistant powder coating comprises the following raw materials in parts by weight:
wherein, the saturated carboxyl polyester resin is synthesized by n-amyl alcohol, butanediol, isophthalic acid and benzyl triethyl ammonium chloride; the mass ratio of n-amyl alcohol, butanediol, isophthalic acid and benzyl triethyl amine chloride is 80: 15: 110: 5; the average molecular weight of the bisphenol A epoxy resin is 4000-6000; the curing agent is PT 910; the leveling agent is polyether polyester modified organic siloxane; the ultraviolet absorbent is 2- (2 '-hydroxy-5' -methylphenyl) benzotriazole; the defoaming agent is a modified organic silicon defoaming agent.
A preparation method of an anti-ultraviolet powder coating comprises the following steps:
respectively drying saturated carboxyl polyester resin and bisphenol A epoxy resin at 40 deg.C for 30 min;
pulverizing the dried saturated carboxyl polyester resin and bisphenol A epoxy resin to 80 meshes to obtain mixed resin;
adding a curing agent, a flatting agent, an ultraviolet absorbent, a defoaming agent and mixed resin into a pre-mixer, and pre-mixing for 10min to obtain a mixed material;
adding the mixed materials into a double-screw extruder, and setting the temperature of a first zone as follows: the temperature of the second zone is set to be between 80 and 90 ℃: melting and extruding at the temperature of 105-115 ℃ and the head temperature of 116-120 ℃ to obtain an extrudate;
and tabletting the hot extruded material while the hot extruded material is hot, cooling, crushing the flaky extruded material, and sieving the powder with a 250-mesh sieve to obtain the powder coating.
An application method of an anti-ultraviolet powder coating comprises the following steps:
sieving the powder coating with a 300-mesh sieve;
and spraying the powder coating on the surface-treated plate by using an electrostatic spray gun, wherein the thickness of the coating film is 120 mu m, and fully curing at 180 ℃/15min to obtain the powder coating.
Specific example 4
An uvioresistant powder coating comprises the following raw materials in parts by weight:
wherein, the saturated carboxyl polyester resin is synthesized by n-amyl alcohol, butanediol, isophthalic acid and benzyl triethyl ammonium chloride; the mass ratio of n-amyl alcohol, butanediol, isophthalic acid and benzyl triethyl amine chloride is 75:18:125: 4; the average molecular weight of the bisphenol A epoxy resin is 4500-; the curing agent is polyisocyanate; the flatting agent is polydimethylsiloxane; the ultraviolet absorbent is 2-hydroxy-4-methoxybenzophenone; the defoaming agent is a modified organic silicon defoaming agent.
A preparation method of an anti-ultraviolet powder coating comprises the following steps:
respectively drying saturated carboxyl polyester resin and bisphenol A epoxy resin at 55 deg.C for 25 min;
pulverizing the dried saturated carboxyl polyester resin and bisphenol A epoxy resin to 60 meshes to obtain mixed resin;
adding a curing agent, a flatting agent, an ultraviolet absorbent, a defoaming agent and mixed resin into a pre-mixer, and pre-mixing for 22min to obtain a mixed material;
adding the mixed materials into a double-screw extruder, and setting the temperature of a first zone as follows: 75-85 ℃, and setting the temperature of the second zone as follows: melting and extruding at the temperature of between 100 and 110 ℃ and the temperature of a machine head of between 117 and 120 ℃ to obtain an extrudate;
and tabletting the hot extruded material while the hot extruded material is hot, cooling, crushing the flaky extruded material, and sieving the powder with a 230-mesh sieve to obtain the powder coating.
An application method of an anti-ultraviolet powder coating comprises the following steps:
sieving the powder coating with a 280-mesh sieve;
and spraying the powder coating on the surface-treated plate by using an electrostatic spray gun, wherein the thickness of the coating film is 90 mu m, and fully curing at 195 ℃/12min to obtain the powder coating.
Specific example 5
An uvioresistant powder coating comprises the following raw materials in parts by weight:
wherein, the saturated carboxyl polyester resin is synthesized by n-amyl alcohol, butanediol, isophthalic acid and benzyl triethyl ammonium chloride; the mass ratio of n-amyl alcohol, butanediol, isophthalic acid and benzyl triethyl amine chloride is 75:18:118: 4; the average molecular weight of the bisphenol A epoxy resin is 5000-; the curing agent is GMA; the leveling agent is polyether polyester modified organic siloxane; the ultraviolet absorbent is 2- (2 '-hydroxy-5' -methylphenyl) benzotriazole; the defoaming agent is a modified organic silicon defoaming agent.
A preparation method of an anti-ultraviolet powder coating comprises the following steps:
respectively drying saturated carboxyl polyester resin and bisphenol A epoxy resin at 55 deg.C for 25 min;
pulverizing the dried saturated carboxyl polyester resin and bisphenol A epoxy resin to 70 meshes to obtain mixed resin;
adding a curing agent, a flatting agent, an ultraviolet absorbent, a defoaming agent and mixed resin into a pre-mixer, and pre-mixing for 18min to obtain a mixed material;
adding the mixed materials into a double-screw extruder, and setting the temperature of a first zone as follows: 75-85 ℃, and setting the temperature of the second zone as follows: melting and extruding at the temperature of 105-112 ℃ and the head temperature of 115-120 ℃ to obtain an extrudate;
and tabletting the hot extruded material while the hot extruded material is hot, cooling, crushing the flaky extruded material, and sieving the powder with a 180-mesh sieve to obtain the powder coating.
An application method of an anti-ultraviolet powder coating comprises the following steps:
sieving the powder coating with a 280-mesh sieve;
and spraying the powder coating on the surface-treated plate by using an electrostatic spray gun, wherein the thickness of a paint film is 110 mu m, and fully curing at 195 ℃/12min to obtain the powder coating.
The powder coatings of specific examples 1 to 5 were applied to panels and subjected to adhesion (test method: SY/T0442-97), impact resistance (GB/T1732-1993), salt spray resistance test 1000h (GB/T1771-2007) at different UV acceleration times (test method: GB/T23987-2009) with a commercially available "Epike technology" UV resistant powder coating (comparative example 1), with the following test results:
as can be seen from the above table: compared with the powder coating of the comparative example 1, after the same accelerated ultraviolet treatment, the powder coating of the examples 1 to 5 does not yellow, and after 24 months, the adhesion, impact strength and salt spray resistance of the coating are all kept good, so that the powder coating of the examples 1 to 5 has a great performance advantage compared with the existing powder coating of the comparative example 1.
The steps in the method of the embodiment of the invention can be sequentially adjusted, combined and deleted according to actual needs.
The present invention has been described in detail, and the principle and embodiments of the present invention are explained by applying specific examples, which are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
Claims (10)
1. An anti-ultraviolet powder coating is characterized by comprising the following raw materials in parts by weight:
2. the ultraviolet-resistant powder coating as claimed in claim 1, wherein the raw materials comprise, by weight:
3. the uv-resistant powder coating according to claims 1-2, characterized in that the saturated carboxylic polyester resin is synthesized from n-pentanol, butanediol, isophthalic acid, benzyltriethylammonium chloride; the mass ratio of the n-amyl alcohol, the butanediol, the isophthalic acid and the benzyltriethylammonium chloride is 60-80:15-20:110-130: 2-5.
4. The UV-resistant powder coating composition as claimed in claims 1-2, wherein the bisphenol A epoxy resin has an average molecular weight of 4000-7000.
5. The UV-resistant powder coating according to claims 1-2, wherein the curing agent is one of TGIC, PT910, GMA and polyisocyanate.
6. The UV-resistant powder coating according to claims 1-2, wherein the leveling agent is polydimethylsiloxane or polyether polyester modified organosiloxane.
7. The anti-uv powder coating of claims 1-2, wherein the uv absorber is one of phenyl ortho-hydroxybenzoate, 2- (2 '-hydroxy-5' -methylphenyl) benzotriazole, 2, 4-dihydroxybenzophenone, and 2-hydroxy-4-methoxybenzophenone.
8. The uv-resistant powder coating according to claims 1-2, characterized in that the defoamer is a modified silicone defoamer.
9. A preparation method of an anti-ultraviolet powder coating is characterized by comprising the following steps:
respectively drying saturated carboxyl polyester resin and bisphenol A epoxy resin at 40-60 deg.C for 20-30 min;
pulverizing the dried saturated carboxyl polyester resin and bisphenol A epoxy resin to 30-80 meshes to obtain mixed resin;
adding a curing agent, a flatting agent, an ultraviolet absorbent, a defoaming agent and mixed resin into a pre-mixer, and pre-mixing for 10-25min to obtain a mixed material;
adding the mixed materials into a double-screw extruder, and setting the temperature of a first zone as follows: 75-90 ℃, and setting the temperature of the second zone as follows: melting and extruding at the temperature of 115 ℃ and the temperature of a machine head of 120 ℃ to obtain an extrudate;
and tabletting the hot extruded material while the hot extruded material is hot, crushing the flaky extruded material after cooling, and sieving the powder through a 150-mesh and 250-mesh sieve to obtain the powder coating.
10. An application method of an anti-ultraviolet powder coating is characterized by comprising the following steps:
sieving the powder coating by a 200-300-mesh sieve;
spraying the powder coating on the surface-treated plate by an electrostatic spray gun, wherein the thickness of the paint film is 80-120 mu m, and fully curing at 180-agent temperature of 200 ℃/10-15min to obtain the powder coating.
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| CN202010771610.7A CN111808508A (en) | 2020-08-04 | 2020-08-04 | Anti-ultraviolet powder coating and preparation method and application method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113667384A (en) * | 2021-08-03 | 2021-11-19 | 芜湖思瀚新材料有限公司 | Light filtering powder coating and preparation method thereof |
| CN116239929A (en) * | 2022-12-29 | 2023-06-09 | 安徽鑫友高分子新材料科技有限公司 | Ultraviolet aging resistant epoxy resin coating and processing method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004083839A (en) * | 2001-12-19 | 2004-03-18 | Asahi Denka Kogyo Kk | Low temperature curable epoxy resin, method for producing the same and composition for powder coating using the same |
| CN106752767A (en) * | 2016-12-12 | 2017-05-31 | 衡阳山泰化工有限公司 | A kind of low temperature cured powder coating |
| CN110819216A (en) * | 2019-10-10 | 2020-02-21 | 广东绿色大地化工有限公司 | Low-temperature curing powder coating and preparation method thereof |
-
2020
- 2020-08-04 CN CN202010771610.7A patent/CN111808508A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004083839A (en) * | 2001-12-19 | 2004-03-18 | Asahi Denka Kogyo Kk | Low temperature curable epoxy resin, method for producing the same and composition for powder coating using the same |
| CN106752767A (en) * | 2016-12-12 | 2017-05-31 | 衡阳山泰化工有限公司 | A kind of low temperature cured powder coating |
| CN110819216A (en) * | 2019-10-10 | 2020-02-21 | 广东绿色大地化工有限公司 | Low-temperature curing powder coating and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113667384A (en) * | 2021-08-03 | 2021-11-19 | 芜湖思瀚新材料有限公司 | Light filtering powder coating and preparation method thereof |
| CN116239929A (en) * | 2022-12-29 | 2023-06-09 | 安徽鑫友高分子新材料科技有限公司 | Ultraviolet aging resistant epoxy resin coating and processing method thereof |
| CN116239929B (en) * | 2022-12-29 | 2024-05-07 | 安徽鑫友高分子新材料科技有限公司 | Ultraviolet aging resistant epoxy resin coating and processing method thereof |
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Application publication date: 20201023 |