CN104356916A - High-gloss polyurethane heat transfer printing powder paint for aluminium profile and preparation method thereof - Google Patents
High-gloss polyurethane heat transfer printing powder paint for aluminium profile and preparation method thereof Download PDFInfo
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- CN104356916A CN104356916A CN201410673867.3A CN201410673867A CN104356916A CN 104356916 A CN104356916 A CN 104356916A CN 201410673867 A CN201410673867 A CN 201410673867A CN 104356916 A CN104356916 A CN 104356916A
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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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/06—Polyurethanes from polyesters
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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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/16—Catalysts
- C08G18/22—Catalysts containing metal compounds
- C08G18/24—Catalysts containing metal compounds of tin
- C08G18/242—Catalysts containing metal compounds of tin organometallic compounds containing tin-carbon bonds
-
- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4202—Two or more polyesters of different physical or chemical nature
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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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/80—Masked polyisocyanates
- C08G18/8061—Masked polyisocyanates masked with compounds having only one group containing active hydrogen
- C08G18/807—Masked polyisocyanates masked with compounds having only one group containing active hydrogen with nitrogen containing compounds
- C08G18/8074—Lactams
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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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/47—Levelling agents
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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
- 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
- C09D7/61—Additives non-macromolecular inorganic
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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
- 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
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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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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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
- 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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- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Polymers & Plastics (AREA)
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- Powder Metallurgy (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses high-gloss polyurethane heat transfer printing powder paint for aluminium profile and a preparation method thereof. The high-gloss polyurethane heat transfer printing powder paint is prepared from the following raw materials in percentage by weight: 38-44% of hydroxyl-terminated saturated polyester resin A, 10-16% of hydroxyl-terminated saturated polyester resin B, 10-20% of an isocyanate curing agent, 5-35% of precipitated barium sulfate, 0-30% of titanium dioxide and 0.3-0.5% of a catalyst. The high-gloss polyurethane heat transfer printing powder paint disclosed by the invention is powder paint which has the advantages of super-high-definition transfer printing effect, extremely good leveling property, full and fine surface as well as weather resistance and high impact resistance which satisfy the requirements, and the like. The high-gloss polyurethane heat transfer printing powder paint disclosed by the invention is suitable for coating building profiles and other outdoor metal products.
Description
Technical field
The present invention relates to a kind of powder coating, be specifically related to hot transfer printing powder coating of a kind of aluminium section bar high gloss urethane and preparation method thereof.
Background technology
The hot transfer printing powder coating of the existing high gloss of China, takes as the leading factor mainly with polyester/TGIC system, and this system exists the smooth not exquisiteness in surface, and after transfer printing, texture is clear not true to nature, the defect such as the inadequate and levelling of surperficial fullness ratio is bad.
Summary of the invention
Object of the present invention, is the deficiency overcoming the hot transfer printing powder coating of existing polyester/TGIC type, provides a kind of aluminium section bar high gloss polyurethane powder coating and preparation method thereof.The present invention has hot transferring effect more true to nature, has higher hardness of film, the more smooth exquisiteness in surface.
For achieving the above object, the present invention adopts following technical scheme: a kind of aluminium section bar high gloss polyurethane powder coating, and they starting material comprising weight percent are as follows:
Preferably, described aluminium section bar high gloss polyurethane powder coating, they starting material comprising weight percent are as follows:
In order to realize the present invention better, described titanium dioxide is rutile-type.
Particularly, described terminal hydroxy group saturated polyester resin A hydroxyl value is 30-50mgKOH/g, and at 160 DEG C, viscosity is 40-60Pa.s; Described terminal hydroxy group saturated polyester resin B hydroxyl value is 80-120mgKOH/g, and at 160 DEG C, viscosity is 10-30Pa.s; Described isocyanate curing agent is the isophorone diisocyanate B1530 that hexanolactam is closed, and it is produced by German Degussa company limited; Described catalyzer is organic tin compound, and it is produced by Estren Chemical Co., Ltd. of the U.S..
Further, powder coating formulation of the present invention also comprises flow agent, and its weight percent accounts for 0.8 ~ 1.2% of described powder coating formulation; Powder coating formulation of the present invention also comprises brightening agent, and its weight percent accounts for 0.3 ~ 0.8% of described powder coating formulation; Also comprise pigment, it is more than one in colour carbon black, iron oxide red, permanent yellow or pthalocyanine blue, and the total weight percent of described pigment accounts for 0.1 ~ 4.5% of described powder coating formulation.
Particularly, described flow agent is the homopolymer of butyl acrylate, and described brightening agent is the multipolymer of acrylate, and described wax powder is polyethylene wax.
The above-mentioned aluminium section bar preparation method of the hot transfer printing powder coating of high light urethane, its step is as follows successively:
The first step, the starting material of described powder coating are dropped into pre-mixing in compounding jar by the weight percent of its correspondence, and the time is 3-4 minute;
The starting material of pre-mixing are melt extruded, compressing tablet by second step, broken;
3rd step, carries out Crushing of Ultrafine by the material of fragmentation;
4th step, sieves fine material and is classified into powder coating;
Particularly, melt extruding in described second step, for melt extruding with the starting material of screw extrusion press to pre-mixing, wherein, the temperature in forcing machine I district is 105 DEG C-115 DEG C, and the temperature in forcing machine II district is 95 DEG C-105 DEG C.
Particularly, Crushing of Ultrafine in described 3rd step is 10-100 micron for carrying out being crushed to powder diameter with ACM mill.
Particularly, the screen sizing excessively in described 4th step, is the rotating screen with 180 eye mesh screens, fines is sieved into finished product powder coating.
The aluminium section bar of the present invention hot transfer printing powder coating of high light urethane has following features:
1. adopt polyurethane system, compared with conventional polyester/TGIC, because its solidifying agent is the polyisocyanates that end is closed, so do not react before non-deblocking, make coating have the sufficient melt-flow time, so film has excellent levelling property.
2. the present invention adopts the terminal hydroxy group saturated polyester resin B that hydroxyl value is 30-50mgKOH/g, viscosity is 40-60Pas (160 DEG C) terminal hydroxy group saturated polyester resin A and hydroxyl value are 80-120mgKOH/g, viscosity is 10-30Pa.s (200 DEG C), middle hydroxyl value (80-120mgKOH/g) resin is due to many than low hydroxyl value of functional group, the cross-linking density that film is very large can be given, and the characteristic of low-viscosity (10-30Pas) resin ensure that the levelling property of coating, film is made to meet the requirement of high-decoration; Low hydroxyl value (30-50mgKOH/g) resin reaction activity is low, imparts the good storage stability of powder coating and resistance to boiling water.
3. the hydroxyl value of the polyester used in the present invention is compared with the acid number of polyester in polyester/TGIC system, obviously much bigger, so the film cross-linking density after solidification can be larger, hardness is higher, thus makes thermally transferred pattern more clear.
4. add catalysts for polyurethanes in the present invention: organic tin catalyzer can accelerate the reaction between isocyano (NCO) and hydroxyl (OH), therefore contribute to improving coating cross-linking density further, strengthen coatingsurface hardness, film transfer paper after transfer printing is made to be easy to come off, not sticky paper, and film coated surface is without vaporific, wood grain lines is clear, more true to nature.
Below in conjunction with drawings and Examples, the invention will be further described.
Accompanying drawing explanation
Fig. 1 is schema of the present invention.
Embodiment
Embodiment one
Prepare the hot transfer printing powder coating of the high light urethane of aluminium section bar in the steps below:
The first step, the starting material pre-mixing by following formula:
Second step, carries out melting mixing by the starting material twin screw extruder after pre-mixing and extrudes, and wherein, the temperature in forcing machine 1 district is 115 DEG C, and the temperature in 2nd district is 105 DEG C;
3rd step, by carrying out fine powder with ACM mill again after the materials result extruded, cooling, fragmentation, to be broken to powder diameter be 10 ~ 100 microns;
4th step, is sized to powder diameter 20 ~ 80 microns by the fine powder pulverized powder coating rotating screen of 180 eye mesh screens, makes powder coating product.
Preferably, the flow agent of the present embodiment adopt Ningbo South-sea Chemical Co., Ltd. to produce 588, the 701B that brightening agent adopts Ningbo South-sea Chemical Co., Ltd. to produce.
Wherein, described forcing machine 1 district is forcing machine melting mixing section, and described forcing machine 2 district is forcing machine feeding section.
The powder coating product produced is tested by relevant criterion, meets the requirement of National Standard of the People's Republic of China " aluminum alloy building section Part IV: powder spraying section bar " (GB5237.4--2008).
Embodiment two
Prepare the hot transfer printing powder coating of the high light urethane of aluminium section bar in the steps below:
The first step, the starting material pre-mixing by following formula:
Second step, carries out melting mixing by the starting material twin screw extruder after pre-mixing and extrudes, and wherein, the temperature in forcing machine 1 district is 115 DEG C, and the temperature in 2nd district is 105 DEG C;
3rd step, by carrying out fine powder with ACM mill again after the materials result extruded, cooling, fragmentation, to be broken to powder diameter be 10 ~ 100 microns;
4th step, is sized to powder diameter 20 ~ 80 microns by the fine powder pulverized powder coating rotating screen of 180 eye mesh screens, makes powder coating product.
Preferably, the flow agent of the present embodiment adopt Ningbo South-sea Chemical Co., Ltd. to produce 588, the 701B that brightening agent adopts Ningbo South-sea Chemical Co., Ltd. to produce.
Wherein, described forcing machine 1 district is forcing machine melting mixing section, and described forcing machine 2 district is forcing machine feeding section.
The powder coating product produced is tested by relevant criterion, meets the requirement of National Standard of the People's Republic of China " aluminum alloy building section Part IV: powder spraying section bar " (GB5237.4--2008).
Embodiment three
Prepare the hot transfer printing powder coating of the high light urethane of aluminium section bar in the steps below:
The first step, the starting material pre-mixing by following formula:
Second step, carries out melting mixing by the starting material twin screw extruder after pre-mixing and extrudes, and wherein, the temperature in forcing machine 1 district is 115 DEG C, and the temperature in 2nd district is 105 DEG C;
3rd step, by carrying out fine powder with ACM mill again after the materials result extruded, cooling, fragmentation, to be broken to powder diameter be 10 ~ 100 microns;
4th step, is sized to powder diameter 20 ~ 80 microns by the fine powder pulverized powder coating rotating screen of 180 eye mesh screens, makes powder coating product.
Preferably, the flow agent of the present embodiment adopt Ningbo South-sea Chemical Co., Ltd. to produce 588, the 701B that brightening agent adopts Ningbo South-sea Chemical Co., Ltd. to produce.
Wherein, described forcing machine 1 district is forcing machine melting mixing section, and described forcing machine 2 district is forcing machine feeding section.
The powder coating product produced is tested by relevant criterion, meets the requirement of National Standard of the People's Republic of China " aluminum alloy building section Part IV: powder spraying section bar " (GB5237.4--2008).
Embodiment four
Prepare the hot transfer printing powder coating of the high light urethane of aluminium section bar in the steps below:
The first step, the starting material pre-mixing by following formula:
Second step, carries out melting mixing by the starting material twin screw extruder after pre-mixing and extrudes, and wherein, the temperature in forcing machine 1 district is 115 DEG C, and the temperature in 2nd district is 105 DEG C;
3rd step, by carrying out fine powder with ACM mill again after the materials result extruded, cooling, fragmentation, to be broken to powder diameter be 10 ~ 100 microns;
4th step, is sized to powder diameter 20 ~ 80 microns by the fine powder pulverized powder coating rotating screen of 180 eye mesh screens, makes powder coating product.
Preferably, the flow agent of the present embodiment adopt Ningbo South-sea Chemical Co., Ltd. to produce 588, the 701B that brightening agent adopts Ningbo South-sea Chemical Co., Ltd. to produce.
Wherein, described forcing machine 1 district is forcing machine melting mixing section, and described forcing machine 2 district is forcing machine feeding section.
The powder coating product produced is tested by relevant criterion, meets the requirement of National Standard of the People's Republic of China " aluminum alloy building section Part IV: powder spraying section bar " (GB5237.4--2008).
Embodiment five
Prepare the hot transfer printing powder coating of the high light urethane of aluminium section bar in the steps below:
The first step, the starting material pre-mixing by following formula:
Second step, carries out melting mixing by the starting material twin screw extruder after pre-mixing and extrudes, and wherein, the temperature in forcing machine 1 district is 115 DEG C, and the temperature in 2nd district is 105 DEG C;
3rd step, by carrying out fine powder with ACM mill again after the materials result extruded, cooling, fragmentation, to be broken to powder diameter be 10 ~ 100 microns;
4th step, is sized to powder diameter 20 ~ 80 microns by the fine powder pulverized powder coating rotating screen of 180 eye mesh screens, makes powder coating product.
Preferably, the flow agent of the present embodiment adopt Ningbo South-sea Chemical Co., Ltd. to produce 588, the 701B that brightening agent adopts Ningbo South-sea Chemical Co., Ltd. to produce.
Wherein, described forcing machine 1 district is forcing machine melting mixing section, and described forcing machine 2 district is forcing machine feeding section.
The powder coating product produced is tested by relevant criterion, meets the requirement of National Standard of the People's Republic of China " aluminum alloy building section Part IV: powder spraying section bar " (GB5237.4--2008).
Comparative example one
Prepare the hot transfer printing powder coating of the high light polyester/TGIC of aluminium section bar in the steps below:
The first step, the starting material pre-mixing by following formula:
Second step, by the starting material after pre-mixing, carries out melting mixing with twin screw extruder and extrudes, and wherein, the temperature in forcing machine 1 district is 115 DEG C, and the temperature in 2nd district is 105 DEG C;
3rd step, by extrude materials result, cooling, after fragmentation, then carrying out fine powder with ACM mill, to be broken to powder diameter be 10 ~ 100 microns;
4th step, by fine powder pulverized powder coating, being sized to powder diameter with the rotating screen of 180 eye mesh screens is 20 ~ 80 microns, makes powder coating product.
Wherein, described forcing machine 1 district is forcing machine melting mixing section, and described forcing machine 2 district is forcing machine feeding section.
Preferably, the flow agent of this comparative example adopt Ningbo South-sea Chemical Co., Ltd. to produce 588, the 701B that brightening agent adopts Ningbo South-sea Chemical Co., Ltd. to produce.
By obtained powder coating product, test by relevant criterion, meet the requirement of National Standard of the People's Republic of China's " aluminum alloy building section Part IV: powder spraying section bar ".
Comparative example two
Prepare the hot transfer printing powder coating of the high light polyester/TGIC of aluminium section bar in the steps below:
The first step, the starting material pre-mixing by following formula:
Second step, by the starting material after pre-mixing, carries out melting mixing with twin screw extruder and extrudes, and wherein, the temperature in forcing machine 1 district is 115 DEG C, and the temperature in 2nd district is 105 DEG C;
3rd step, by extrude materials result, cooling, after fragmentation, then carrying out fine powder with ACM mill, to be broken to powder diameter be 10 ~ 100 microns;
4th step, by fine powder pulverized powder coating, being sized to powder diameter with the rotating screen of 180 eye mesh screens is 20 ~ 80 microns, makes powder coating product.
Wherein, described forcing machine 1 district is forcing machine melting mixing section, and described forcing machine 2 district is forcing machine feeding section.
Preferably, the flow agent of this comparative example adopt Ningbo South-sea Chemical Co., Ltd. to produce 588, the 701B that brightening agent adopts Ningbo South-sea Chemical Co., Ltd. to produce.
By obtained powder coating product, test by relevant criterion, meet the requirement of National Standard of the People's Republic of China's " aluminum alloy building section Part IV: powder spraying section bar ".
Comparative example three
Prepare the hot transfer printing powder coating of the high light polyester/TGIC of aluminium section bar in the steps below:
The first step, the starting material pre-mixing by following formula:
Second step, by the starting material after pre-mixing, carries out melting mixing with twin screw extruder and extrudes, and wherein, the temperature in forcing machine 1 district is 115 DEG C, and the temperature in 2nd district is 105 DEG C;
3rd step, by extrude materials result, cooling, after fragmentation, then carrying out fine powder with ACM mill, to be broken to powder diameter be 10 ~ 100 microns;
4th step, by fine powder pulverized powder coating, being sized to powder diameter with the rotating screen of 180 eye mesh screens is 20 ~ 80 microns, makes powder coating product.
Wherein, described forcing machine 1 district is forcing machine melting mixing section, and described forcing machine 2 district is forcing machine feeding section.
Preferably, the flow agent of this comparative example adopt Ningbo South-sea Chemical Co., Ltd. to produce 588, the 701B that brightening agent adopts Ningbo South-sea Chemical Co., Ltd. to produce.
By obtained powder coating product, test by relevant criterion, meet the requirement of National Standard of the People's Republic of China's " aluminum alloy building section Part IV: powder spraying section bar ".
Table 1: high light urethane of the present invention hot transfer printing powder coating (polyester/TGIC type high gloss powder coating technology performance comparison similar with existing.
Table 1
The present invention is not limited to above-mentioned embodiment, if do not depart from the spirit and scope of the present invention to various change of the present invention or modification, if these are changed and modification belongs within claim of the present invention and equivalent technologies scope, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. the hot transfer printing powder coating of aluminium section bar high gloss urethane, is characterized in that, they starting material comprising weight percent are as follows:
2. the hot transfer printing powder coating of aluminium section bar high gloss urethane as claimed in claim 1, it is characterized in that, they starting material comprising weight percent are as follows:
3. the hot transfer printing powder coating of aluminium section bar high gloss urethane as claimed in claim 1, is characterized in that: described terminal hydroxy group saturated polyester resin A hydroxyl value is 30-50mgKOH/g, and at 160 DEG C, viscosity is 40-60Pa.s; Described terminal hydroxy group saturated polyester resin B hydroxyl value is 80-120mgKOH/g, and at 160 DEG C, viscosity is 10-30Pa.s.
4. the hot transfer printing powder coating of aluminium section bar high gloss urethane as claimed in claim 1, it is characterized in that: also comprise brightening agent, its weight percent accounts for 0.3 ~ 0.8% of described powder coating formulation.
5. the hot transfer printing powder coating of aluminium section bar high gloss urethane as claimed in claim 1, is characterized in that: described isocyanate curing agent is the isophorone diisocyanate B1530 that hexanolactam is closed.
6. the hot transfer printing powder coating of aluminium section bar high gloss urethane as claimed in claim 1, it is characterized in that: also comprise polyethylene wax powder, its weight percent accounts for 0.3 ~ 0.5% of described powder coating formulation.
7. the hot transfer printing powder coating of aluminium section bar high gloss urethane as claimed in claim 1, it is characterized in that: also comprise organotin catalysts, its weight percent accounts for 0.3 ~ 0.5% of described powder coating formulation.
8. the aluminium section bar preparation method of the hot transfer printing powder coating of high light urethane as claimed in claim 1 or 2, it is characterized in that, its step is as follows successively:
The first step, by the starting material pre-mixing of described formula;
Starting material after pre-mixing are carried out melting mixing and extrude by second step;
3rd step, then carries out fine pulverizing by the materials result extruded, cooling, fragmentation;
4th step, sieves the powder coating after fine pulverizing.
9. the aluminium section bar preparation method of the hot transfer printing powder coating of high light urethane as claimed in claim 8, it is characterized in that: the melting mixing in described second step is extruded, refer to and with twin screw extruder the starting material of premix to be carried out to melting is mixed extrudes, wherein, the temperature in forcing machine 1 district is 105 ~ 115 DEG C, and the temperature in 2nd district is 95 ~ 105 DEG C.
10. the aluminium section bar preparation method of the hot transfer printing powder coating of high light urethane as claimed in claim 8, is characterized in that: the fine pulverizing of described 3rd step, refers to carry out fine powder with ACM mill to the material after fragmentation to be broken to powder diameter be 10 ~ 100 microns.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410673867.3A CN104356916A (en) | 2014-11-21 | 2014-11-21 | High-gloss polyurethane heat transfer printing powder paint for aluminium profile and preparation method thereof |
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| CN201410673867.3A CN104356916A (en) | 2014-11-21 | 2014-11-21 | High-gloss polyurethane heat transfer printing powder paint for aluminium profile and preparation method thereof |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105350876A (en) * | 2015-12-02 | 2016-02-24 | 东莞欧景乐厨卫有限公司 | Stainless steel cabinet transfer print door plank and manufacturing process thereof |
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| CN112831258A (en) * | 2021-03-04 | 2021-05-25 | 四川和乐门业有限公司 | Environment-friendly hot-press-resistant transparent finishing powder and preparation method thereof |
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| CN114316178A (en) * | 2021-12-14 | 2022-04-12 | 上海汇得科技股份有限公司 | Polyurethane resin for thermal transfer printing, preparation method thereof, working slurry and thermal transfer printing film |
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| CN105496029A (en) * | 2015-12-02 | 2016-04-20 | 东莞欧景乐厨卫有限公司 | Stainless steel cabinet and manufacturing technology thereof |
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| CN109913112A (en) * | 2019-03-04 | 2019-06-21 | 浙江超浪新材料有限公司 | A kind of aluminium shape surface treatment process |
| CN109913112B (en) * | 2019-03-04 | 2021-11-02 | 浙江超浪新材料有限公司 | Polyurethane wood grain powder coating for aluminum profile |
| CN112831258A (en) * | 2021-03-04 | 2021-05-25 | 四川和乐门业有限公司 | Environment-friendly hot-press-resistant transparent finishing powder and preparation method thereof |
| CN113308184A (en) * | 2021-06-18 | 2021-08-27 | 佛山市南海嘉多彩粉末涂料有限公司 | Bending-resistant weather-resistant powder coating composition for stainless steel and preparation method thereof |
| CN114316178A (en) * | 2021-12-14 | 2022-04-12 | 上海汇得科技股份有限公司 | Polyurethane resin for thermal transfer printing, preparation method thereof, working slurry and thermal transfer printing film |
| CN114316178B (en) * | 2021-12-14 | 2023-10-24 | 上海汇得科技股份有限公司 | Polyurethane resin for thermal transfer printing, preparation method thereof, working slurry and thermal transfer printing film |
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