CN109834026A - A kind of preparation method of the powder spray heat-insulation aluminum section of surface-engraved - Google Patents
A kind of preparation method of the powder spray heat-insulation aluminum section of surface-engraved Download PDFInfo
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Abstract
The present invention relates to the preparation methods of a kind of aluminum profile more particularly to a kind of powder spray heat-insulation aluminum section of surface-engraved.It passes sequentially through following steps and is prepared: aluminum profile preparation: aluminium ingot being smelted into liquid aluminium, the titanium dioxide of zirconium package and the SiO 2 powder of zirconium package is added and is kept for 3-5 hours under melting temperature；Then aluminum profile is demoulded out after a series of pressurizations heating, heat preservation and cooling；Polyurethane adiabatic gum component A and B component are prepared；Heat-insulation aluminum section preparation: component A and B component are poured into aluminum profile groove, form heat-insulation aluminum section after static cooling and solidifying；Modified powder coating；Electrostatic spraying；Carving processing: carry out carving to by carving surface, paint for the first time: be specifically current density is 4-5 amperes/square decimeter, in electrolyte that temperature is 22-28 DEG C carry out hard anodizing；Second of colouring.Inventive article has dust-proof antibiotic property and impact resistance, wearability and weather resistance be good, glossiness is high.
Description
Technical field
The present invention relates to the preparation sides of a kind of aluminum profile more particularly to a kind of powder spray heat-insulation aluminum section of surface-engraved
Method.
Background technique
Adiabatic gum aluminum profile is a kind of New Building Materials.It is built with the nonmetallic materials connection aluminium alloy of lower thermal conductivity
Building has heat-insulated, sound insulation function composite material made of profile.It is strong as structure possessed by architectural shape in addition to having
It spends outside characteristic, also there is excellent thermal insulation property and sound insulation property.Principle is to utilize plastic material by two layers of aluminium alloy of indoor and outdoor
Not only an entirety had been separated but also closely connected into, a kind of new heat-insulated aluminum profile is constituted, this innovation structure design takes into account
The advantage of two kinds of materials of plastics and aluminium alloy, while meeting a variety of requirements of decorative effect and door and window intensity and durability energy.
CN102828073B (2014-1-8) discloses a kind of production method of powder spray aluminium alloy extrusions, however the aluminium
The performance of alloy profile still has much room for improvement.
Summary of the invention
The purpose of the present invention is improving a kind of dust-proof antibacterial and impact resistance, wearability and weather resistance are good, gloss
Spend high heat-insulation aluminum section.
Above-mentioned technical purpose of the invention has the technical scheme that
A kind of preparation method of the powder spray heat-insulation aluminum section of surface-engraved, including aluminum profile groove and setting are in the aluminium profiles
Polyurethane adiabatic gum in material groove, the aluminium shape surface are coated with modified powder coating, it passes sequentially through following steps
It is prepared:
(1) prepared by aluminum profile: aluminium ingot being smelted into liquid aluminium, the titanium dioxide of zirconium package and the silicon dioxide powder of zirconium package is added
End is simultaneously kept for 3-5 hours under melting temperature；Then it is poured under 1.1-1.5MPa pressure in 600 DEG C or more of mold, so
Cooling afterwards, heat preservation, demoulds out aluminum profile；
(2) polyurethane adiabatic gum is prepared:
1. component A is prepared: preparing 20-85 parts of the first polyalcohol, 10-90 parts of the second polyalcohol, full methyl-etherified trimerization by weight
3-8 parts of melamine resin, 10-20 parts of small molecule dihydric alcohol, 2-5 parts of defoaming agent, catalyst, surfactant, fire retardant and 0.2-
0.8 part of toughened with silicon rubber agent vacuum dehydration and cools and solidifies after being warming up to 60-80 DEG C after being uniformly mixed, and discharging sealing is simultaneously
Component A is obtained with helium protective packaging；
First polyalcohol is the polymer of ethylene glycol and propylene glycol, degree of functionality 3, hydroxyl value 45-99mgKOH/g；
Second polyalcohol is the polyol of trimethylolpropane and epoxy butane, and epoxy butane content is greater than 60%, hydroxyl
Value 3-22mgKOH/g；
The small molecule dihydric alcohol is at least one of methyl propanediol, dipropylene glycol, diethylene glycol；
The defoaming agent is organosilicon fluorine class compound；
2. B component prepare: by isocyanate content be 40-55% poly methylene poly phenyl poly isocyanate modifier in 88-95
It is stirred under vacuum at DEG C and cools down after mixing, discharging, which seals and fills helium protective packaging, obtains B component；
(3) heat-insulation aluminum section prepare: be poured into after the component A and B component are mixed evenly according to mass ratio 6-8:1 with
In the mobile aluminum profile groove of 0.15-0.2m/s speed, heat-insulation aluminum section is formed after static cooling and solidifying；
(4) modified powder coating: polyester resin 58-68 parts of preparation, 4-7 parts of hydroxyalkyl amide, zirconium wrap up by weight
10-15 parts of titanium dioxide, 3-6 parts of silica, 4-6 parts of acrylic copolymer, 5-12 parts of toner and polyacrylate 2-5
Part, it is uniformly mixed, in 130-140 DEG C of melting extrusion, cooling broken acquisition modified powder coating；
(5) electrostatic spraying and solidification: by the modified powder coating electrostatic spraying to heat-insulation aluminum section, then in 100-120
Solidify 10-18min at DEG C；
(6) carving is handled:
I I takes bed die to fix the aluminum profile after solidification, then carving is carried out to by carving surface with numerical control carving machine, by carving surface
Pattern depth be the aluminum profile thickness 1/3-1/2;
II II paints for the first time: carrying out horniness anode oxide film coloring treatment to aluminium shape surface；Specifically it is in current density
4-5 amperes/square decimeter, temperature be to carry out hard anodizing in 22-28 DEG C of electrolyte, contain in the electrolyte:
Sulfuric acid 150-230g/ liter, acetic acid 4-8g/ liter, the mixed liquor 25- of 1:1 is mixed into molar ratio hydroxyacetic acid and succinic acid
35g/ liter；
Second of colouring of III.
The invention has the advantages that
1. aluminum profile internal performance prepared by the present invention is stable, comprehensive performance such as draftability, hardness and strength is good, for post-processing
The performance of processing is good；
2. good by the mechanical property that specific component and method prepare polyurethane adiabatic gum, it can be achieved that room temperature casting, the temperature of adaptation
It is wide to spend range, it is long to pour the phase, and when being used for pouring heat insulating aluminum profile, aluminum profile of different shapes can be obtained；
3. modified powder coating of the invention can be improved the erosiveness of the mechanical performance and anti-medium of film, reduces powder and apply
Expect cost；
4. modified powder coating of the invention is sprayed on heat-insulation aluminum section, assign the excellent dust-proof anti-microbial property of aluminum profile and
Heat-proof quality, ageing-resistant performance, impact resistance and wearability；The diverse requirements that consumer can be met simultaneously, are widely used in filling
It repairs on material such as door and window product；
5. making surface-engraved processing on the aluminum products after heat insulation spray finishing, the aluminum products of stereo concave-convex aesthetic pattern can be manufactured,
And surface color and decorative pattern color can be distinguished, it is easier than chromatography in processing；It is visually more attractive and exquisite.
Preferably, being also added with 8-16 parts of ethylene oxide and propylene oxide copolyethers in step (2) component A.
Preferably, (2) second polyalcohol of step is to be formed with bimetallic cyanide complex catalyst is used
Trimethylolpropane and epoxy butane polyol.
Preferably, step (2) catalyst is 1-3 parts of triethylene diamines.
Preferably, step (2) fire retardant is the sulfonate salt flame of 0.2-0.5 parts by weight.
Preferably, step (4) polyester is the polyethylene terephthalate that 1:1:1 is mixed into molar ratio, gathers
Butylene terephthalate and carboxyl end group saturated polyester resin mixture.
The mechanical performance of film and the erosiveness of anti-medium can be further increased using coating prepared by the polyester.
Preferably, described be crushed refers to that classification grinding to powder diameter is 1-15 microns.
Preferably, second colouring successively includes drawing carving style drawing at quarter to carve on paper；Patch carves and draws paper；Formulated oil
Paint；To knurling section primer spray and the paint；Last complementary color and board-washing；The paint formulation is by weight are as follows: polyurethane 58-68
Part, toner or 5-10 parts of mill base, 4-7 parts of hydroxyalkyl amide, 6-13 parts of polyacrylate, 8-12 parts of deionized water.
Cooperate using paint of the invention, while with priming paint, makes paint firm coloration on ridge design, and glossiness
It is good.
Preferably, the step (1) is after 30-40 DEG C of speed is cooled to 80-100 DEG C of heat preservation 1-2 hours on an hourly basis
To the first heat preservation product；The first heat preservation product are heated to 380-440 DEG C, heat preservation obtains the second heat preservation product in 0.5-1 hours；Then
Product extrusion molding is kept the temperature by described second using extruder；Molding to be extruded is down to 80-100 DEG C, quenches 20-40s, then often
Temperature cooling obtains aluminum profile.
Aluminum profile internal performance prepared by the present invention is stable, comprehensive performance such as draftability, hardness and strength is good.
Specific embodiment
Component A prepares one: preparing 85 parts of the first polyalcohol, 90 parts of the second polyalcohol, full methyl-etherified melamine by weight
3 parts of polyimide resin, 20 parts of small molecule dihydric alcohol, 5 parts, 3 parts triethylene diamine catalyst of organosilicon fluorine class compound defoaming agent, 4 parts
B8002 surfactant, the sulfonate salt flame of 0.5 parts by weight and 0.8 part of toughened with silicon rubber agent, heat up after being uniformly mixed
It vacuum dehydration and is cooled and solidified after to 80 DEG C, discharging seals simultaneously with helium protective packaging acquisition component A；8 are also added in component A
Part ethylene oxide and propylene oxide copolyethers；
First polyalcohol is the polymer of ethylene glycol and propylene glycol, degree of functionality 3, hydroxyl value 45-99mgKOH/g；
Second polyalcohol is the polyol of trimethylolpropane and epoxy butane, and epoxy butane content is greater than 60%, hydroxyl value 3-
22mgKOH/g；
Small molecule dihydric alcohol is methyl propanediol；
B component prepares one: the poly methylene poly phenyl poly isocyanate modifier that isocyanate content is 40-55% (is purchased from upper
Hai Youliang Chemical Industry Science Co., Ltd) it is stirred under vacuum at 95 DEG C and cools down after mixing, discharging, which seals, simultaneously fills helium protection packet
Dress obtains B component；
Component A prepares two: preparing 20 parts of the first polyalcohol, 10 parts of the second polyalcohol, full methyl-etherified melamine tree by weight
8 parts of rouge, 10 parts of small molecule dihydric alcohol, 2 parts, 1 part triethylene diamine catalyst of organosilicon fluorine class compound defoaming agent, 2 parts of B8002
Surfactant, the sulfonate salt flame of 0.2 parts by weight and 0.2 part of toughened with silicon rubber agent, are warming up to 60 after being uniformly mixed
It vacuum dehydration and is cooled and solidified after DEG C, discharging seals simultaneously with helium protective packaging acquisition component A；8 parts of rings are also added in component A
Oxidative ethane and propylene oxide copolyethers；
First polyalcohol is the polymer of ethylene glycol and propylene glycol, degree of functionality 3, hydroxyl value 45-99mgKOH/g；
Second polyalcohol is the polyol of trimethylolpropane and epoxy butane, and epoxy butane content is greater than 60%, hydroxyl value 3-
22mgKOH/g；
Small molecule dihydric alcohol is dipropylene glycol；
B component prepares two: the poly methylene poly phenyl poly isocyanate modifier that isocyanate content is 40-55% (is purchased from upper
Hai Youliang Chemical Industry Science Co., Ltd) it is stirred under vacuum at 88 DEG C and cools down after mixing, discharging, which seals, simultaneously fills helium protection packet
Dress obtains B component；
Component A prepares three: preparing 65 parts of the first polyalcohol, 70 parts of the second polyalcohol, full methyl-etherified melamine tree by weight
5 parts of rouge, 15 parts of small molecule dihydric alcohol, 3 parts, 2 parts triethylene diamine catalyst of organosilicon fluorine class compound defoaming agent, 3 parts of B8002
Surfactant, the sulfonate salt flame of 0.3 parts by weight and 0.6 part of toughened with silicon rubber agent, are warming up to 70 after being uniformly mixed
It vacuum dehydration and is cooled and solidified after DEG C, discharging seals simultaneously with helium protective packaging acquisition component A；12 parts are also added in component A
Ethylene oxide and propylene oxide copolyethers；
First polyalcohol is the polymer of ethylene glycol and propylene glycol, degree of functionality 3, hydroxyl value 45-99mgKOH/g；
Second polyalcohol is the polyol of trimethylolpropane and epoxy butane, and epoxy butane content is greater than 60%, hydroxyl value 3-
22mgKOH/g；
Small molecule dihydric alcohol is dipropylene glycol；
B component prepares three: the poly methylene poly phenyl poly isocyanate modifier that isocyanate content is 40-55% (is purchased from upper
Hai Youliang Chemical Industry Science Co., Ltd) it is stirred under vacuum at 90 DEG C and cools down after mixing, discharging, which seals, simultaneously fills helium protection packet
Dress obtains B component；
Embodiment one
(1) prepared by aluminum profile: aluminium ingot is smelted into liquid aluminium, be added the zirconium package of the composition of 1:1 in mass ratio titanium dioxide and
The silica hybrid powder of zirconium package, the mass ratio that mixed-powder accounts for aluminium ingot is 1-3%, is then kept for 5 hours at high temperature；
Then be poured under 1.5MPa pressure 700 DEG C or more in reeded mold, 80 DEG C of speed are cooled to 450 on an hourly basis
3 hours are kept the temperature after DEG C, then 40 DEG C of speed are cooled to 100 DEG C of heat preservations and obtain the first heat preservation product in 2 hours on an hourly basis again；By first
Heat preservation product are heated to 440 DEG C, and heat preservation obtains the second heat preservation product in 1 hour；Then product extrusion molding is kept the temperature by second using extruder；
Molding to be extruded is down to 100 DEG C, quenches 40s, then room temperature cooling is obtained with reeded aluminum profile；
(2) polyurethane adiabatic gum is prepared: preparing polyurethane adiabatic gum component by component A preparation one and B component；
(3) prepared by heat-insulation aluminum section: being poured into after component A and B component are mixed evenly according to mass ratio 6:1 with 0.15m/
In the mobile aluminum profile groove of s speed, heat-insulation aluminum section is formed after static cooling and solidifying；
(4) modified powder coating: the titanium dioxide of 58 parts of polyester resin of preparation, 4 parts of hydroxyalkyl amide, zirconium package by weight
10 parts of titanium, 3 parts of silica, 4 parts of acrylic copolymer, toner 5 and 2 parts of polyacrylate are uniformly mixed, molten at 130 DEG C
Melt extrusion, cooling, classification grinding to powder diameter is 1 micron of acquisition modified powder coating；Polyester refers to that 1:1:1 is mixed in molar ratio
Polyethylene terephthalate, polybutylene terephthalate and the carboxyl end group saturated polyester resin mixture of synthesis；
(5) electrostatic spraying and solidification: by modified powder coating electrostatic spraying to heat-insulation aluminum section, then solidify at 100 DEG C
Required heat-insulation aluminum section is made in 10min；
(6) carving is handled:
I I takes bed die to fix the aluminum profile after solidification, then carving is carried out to by carving surface with numerical control carving machine, by carving surface
Pattern depth be the aluminum profile thickness 1/3;
II II paints for the first time: carrying out horniness anode oxide film coloring treatment to aluminium shape surface；Specifically it is in current density
4 amperes/square decimeter, temperature contain: sulfuric acid to carry out hard anodizing in 22 DEG C of electrolyte in the electrolyte
150g/ liter, acetic acid 4g/ liter, the mixed liquor 35g/ liter for the hydroxyacetic acid and succinic acid that 1:1 is mixed into molar ratio；
III second paints: successively including drawing carving style drawing at quarter to carve on paper；Patch carves and draws paper；Allotment paint；To knurling section
Primer spray and the paint；Last complementary color and board-washing；The paint formulation is by weight are as follows: 58 parts of polyurethane, toner or mill base 5
Part, 4 parts of hydroxyalkyl amide, 6 parts of polyacrylate, 8 parts of deionized water.
Detection performance data are shown in Table 1.
Embodiment two
(1) prepared by aluminum profile: aluminium ingot being smelted into liquid aluminium, the titanium dioxide of zirconium package and the silicon dioxide powder of zirconium package is added
End is simultaneously kept for 3 hours at high temperature；Then be poured under 1.1MPa pressure 600 DEG C or more in reeded mold, press
2 hours are kept the temperature after 60 DEG C of speed are cooled to 350 DEG C per hour, then to be cooled to 80 DEG C of heat preservations 1 small for 30 DEG C of speed on an hourly basis again
When obtain the first heat preservation product；First heat preservation product are heated to 380-440 DEG C, heat preservation obtains the second heat preservation product in 0.5 hour；Then sharp
Product extrusion molding is kept the temperature by second with extruder；Molding to be extruded is down to 80 DEG C, quenches 20s, then room temperature cooling obtains band
Reeded aluminum profile；
(2) polyurethane adiabatic gum is prepared: preparing two and two preparation polyurethane adiabatic gum components of B component preparation by component A；
(3) prepared by heat-insulation aluminum section: being poured into after component A and B component are mixed evenly according to mass ratio 8:1 with 0.2m/s
In the mobile aluminum profile groove of speed, heat-insulation aluminum section is formed after static cooling and solidifying；
(4) modified powder coating: the titanium dioxide of 68 parts of polyester resin of preparation, 7 parts of hydroxyalkyl amide, zirconium package by weight
15 parts of titanium, 6 parts of silica, 6 parts of acrylic copolymer, 12 parts of toner and 5 parts of polyacrylate are uniformly mixed, at 140 DEG C
Melting extrusion, cooling, classification grinding to powder diameter is 15 microns of acquisition modified powder coating；Polyester refers to 1:1 in molar ratio:
1 polyethylene terephthalate, polybutylene terephthalate and the carboxyl end group saturated polyester resin mixture being mixed into；
(5) electrostatic spraying and solidification: by modified powder coating electrostatic spraying to heat-insulation aluminum section, then solidify at 120 DEG C
Required heat-insulation aluminum section is made in 18min；
(6) carving is handled:
I I takes bed die to fix the aluminum profile after solidification, then carving is carried out to by carving surface with numerical control carving machine, by carving surface
Pattern depth be the aluminum profile thickness 1/2;
II II paints for the first time: carrying out horniness anode oxide film coloring treatment to aluminium shape surface；Specifically it is in current density
5 amperes/square decimeter, temperature contain: sulfuric acid to carry out hard anodizing in 28 DEG C of electrolyte in the electrolyte
230g/ liter, acetic acid 8g/ liter, the mixed liquor 25g/ liter for the hydroxyacetic acid and succinic acid that 1:1 is mixed into molar ratio；
III second paints: successively including drawing carving style drawing at quarter to carve on paper；Patch carves and draws paper；Allotment paint；To knurling section
Primer spray and the paint；Last complementary color and board-washing；The paint formulation is by weight are as follows: 68 parts of polyurethane, toner or mill base 10
Part, 7 parts of hydroxyalkyl amide, 13 parts of polyacrylate, 12 parts of deionized water.
Embodiment three
(1) prepared by aluminum profile: aluminium ingot being smelted into liquid aluminium, the titanium dioxide of zirconium package and the silicon dioxide powder of zirconium package is added
End is simultaneously kept for 4 hours at high temperature；Then be poured under 1.3MPa pressure 800 DEG C or more in reeded mold, press
2.5 hours are kept the temperature after 70 DEG C of speed are cooled to 400 DEG C per hour, then 35 DEG C of speed are cooled to 90 DEG C of heat preservations on an hourly basis again
Obtain within 1.5 hours the first heat preservation product；First heat preservation product are heated to 400 DEG C, heat preservation obtains the second heat preservation product in 0.8 hour；Then
Product extrusion molding is kept the temperature by second using extruder；Molding to be extruded is down to 90 DEG C, quenches 30s, then room temperature cooling obtains
With reeded aluminum profile；
(2) polyurethane adiabatic gum is prepared: preparing three and three preparation polyurethane adiabatic gum components of B component preparation by component A；
(3) prepared by heat-insulation aluminum section: being poured into after component A and B component are mixed evenly according to mass ratio 7:1 with 0.18m/
In the mobile aluminum profile groove of s speed, heat-insulation aluminum section is formed after static cooling and solidifying；
(4) modified powder coating: the titanium dioxide of 64 parts of polyester resin of preparation, 5 parts of hydroxyalkyl amide, zirconium package by weight
14 parts of titanium, 5 parts of silica, 5 parts of acrylic copolymer, 8 parts of toner and 3 parts of polyacrylate are uniformly mixed, at 135 DEG C
Melting extrusion, cooling, classification grinding to powder diameter is 6 microns of acquisition modified powder coating；Polyester refers to 1:1:1 in molar ratio
Polyethylene terephthalate, polybutylene terephthalate and the carboxyl end group saturated polyester resin mixture being mixed into；
(5) electrostatic spraying and solidification: by modified powder coating electrostatic spraying to heat-insulation aluminum section, then solidify at 110 DEG C
Required heat-insulation aluminum section is made in 15min；
(6) carving is handled:
I I takes bed die to fix the aluminum profile after solidification, then carving is carried out to by carving surface with numerical control carving machine, by carving surface
Pattern depth be the aluminum profile thickness 2/5;
II II paints for the first time: carrying out horniness anode oxide film coloring treatment to aluminium shape surface；Specifically it is in current density
4.5 amperes/square decimeter, temperature contain: sulfuric acid to carry out hard anodizing in 25 DEG C of electrolyte in the electrolyte
190g/ liter, acetic acid 6g/ liter, the mixed liquor 28g/ liter for the hydroxyacetic acid and succinic acid that 1:1 is mixed into molar ratio；
III second paints: successively including drawing carving style drawing at quarter to carve on paper；Patch carves and draws paper；Allotment paint；To knurling section
Primer spray and the paint；Last complementary color and board-washing；The paint formulation is by weight are as follows: 60 parts of polyurethane, toner or mill base 8
Part, 5 parts of hydroxyalkyl amide, 9 parts of polyacrylate, 10 parts of deionized water.
Example IV
The preparation of polyurethane adiabatic gum is that one and three preparation polyurethane adiabatic gum components of B component preparation are prepared by component A；Remaining is the same as real
Example one is applied, the difference is that the second polyalcohol is with the trimethylolpropane formed using bimetallic cyanide complex catalyst
With the polyol of epoxy butane.When prepared by aluminum profile, after aluminium ingot is melt into liquid aluminium, it is poured into after mold on an hourly basis
60 DEG C of speed keep the temperature 2 hours after being cooled to 350 DEG C, and then 30 DEG C of speed are cooled to 80 DEG C of heat preservations 1 hour on an hourly basis again；Again often
Warm cooling and demolding goes out aluminum profile.
Embodiment five
The preparation of polyurethane adiabatic gum is that one and two preparation polyurethane adiabatic gum components of B component preparation are prepared by component A.Remaining is the same as real
Example two is applied, the difference is that after aluminium ingot is melt into liquid aluminium, being poured into after mold 80 DEG C of speed on an hourly basis when aluminum profile preparation
3 hours are kept the temperature after being cooled to 450 DEG C, then 40 DEG C of speed are cooled to 100 DEG C of heat preservations 2 hours on an hourly basis again；Room temperature cooling again
Demould out aluminum profile.
Embodiment six
The preparation of polyurethane adiabatic gum is to prepare polyurethane adiabatic gum component by component A preparation three and B component.Remaining is the same as real
Example three is applied, the difference is that after aluminium ingot is melt into liquid aluminium, being poured into after mold 70 DEG C of speed on an hourly basis when aluminum profile preparation
2.5 hours are kept the temperature after being cooled to 400 DEG C, then 35 DEG C of speed are cooled to 90 DEG C of heat preservations 1.5 hours on an hourly basis again；Room temperature is cold again
But aluminum profile is demoulded out.
Embodiment seven
The preparation of polyurethane adiabatic gum is that three and two preparation polyurethane adiabatic gum components of B component preparation are prepared by component A.Remaining is the same as real
Apply example one.
Embodiment eight
The preparation of polyurethane adiabatic gum is that two and three preparation polyurethane adiabatic gum components of B component preparation are prepared by component A.Remaining is the same as real
Apply example two.
Embodiment nine
The preparation of polyurethane adiabatic gum is to prepare polyurethane adiabatic gum component by component A preparation two and B component.Remaining is the same as real
Apply example three.
Comparative example one
As in the first embodiment, unlike the component A and B component are mixed evenly according to mass ratio 5:1 after be poured into
In the mobile aluminum profile groove of 0.3m/s speed, heat-insulation aluminum section is formed after static cooling and solidifying；Then it prepares by weight poly-
50 parts of ester resin, 8 parts of titanium dioxide, 8 parts of acrylic copolymer, 10 parts of toner are uniformly mixed, cold in 120 DEG C of melting extrusions
But it is crushed and obtains modified powder coating；Later by the modified powder coating electrostatic spraying to heat-insulation aluminum section, then 100
Solidify 8min at DEG C；Then carving processing is carried out, carving paint used is without containing hydroxyalkyl amide and polyacrylate, directly
Using conventional polyurethanes curing agent.
1 embodiment of table and comparative example product properties data comparison
As can be seen from Table 1, inventive article glossiness is high, while can preferably beautifying aluminum profile products, has aluminum profile
Excellent heat-proof quality and impact resistance, wearability, weather resistance.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Claims (10)
1. a kind of preparation method of the powder spray heat-insulation aluminum section of surface-engraved, including aluminum profile groove and setting are in the aluminium
Polyurethane adiabatic gum in profile groove, it is characterised in that: the aluminium shape surface is coated with modified powder coating, it successively leads to
Following steps are crossed to be prepared:
(1) prepared by aluminum profile: aluminium ingot being smelted into liquid aluminium, the titanium dioxide of zirconium package and the silicon dioxide powder of zirconium package is added
End is simultaneously kept for 3-5 hours under melting temperature；Then it is poured under 1.1-1.5MPa pressure in 600 DEG C or more of mold, so
Cooling afterwards, heat preservation, demoulds out aluminum profile；
(2) polyurethane adiabatic gum is prepared:
1. component A is prepared: preparing 20-85 parts of the first polyalcohol, 10-90 parts of the second polyalcohol, full methyl-etherified trimerization by weight
3-8 parts of melamine resin, 10-20 parts of small molecule dihydric alcohol, 2-5 parts of defoaming agent, catalyst, surfactant, fire retardant and 0.2-
0.8 part of toughened with silicon rubber agent vacuum dehydration and cools and solidifies after being warming up to 60-80 DEG C after being uniformly mixed, and discharging sealing is simultaneously
Component A is obtained with helium protective packaging；
First polyalcohol is the polymer of ethylene glycol and propylene glycol, degree of functionality 3, hydroxyl value 45-99mgKOH/g；
Second polyalcohol is the polyol of trimethylolpropane and epoxy butane, and epoxy butane content is greater than 60%, hydroxyl
Value 3-22mgKOH/g；
The small molecule dihydric alcohol is at least one of methyl propanediol, dipropylene glycol, diethylene glycol；
The defoaming agent is organosilicon fluorine class compound；
2. B component prepare: by isocyanate content be 40-55% poly methylene poly phenyl poly isocyanate modifier in 88-95
It is stirred under vacuum at DEG C and cools down after mixing, discharging, which seals and fills helium protective packaging, obtains B component；
(3) heat-insulation aluminum section prepare: be poured into after the component A and B component are mixed evenly according to mass ratio 6-8:1 with
In the mobile aluminum profile groove of 0.15-0.2m/s speed, heat-insulation aluminum section is formed after static cooling and solidifying；
(4) modified powder coating: polyester resin 58-68 parts of preparation, 4-7 parts of hydroxyalkyl amide, zirconium wrap up by weight
10-15 parts of titanium dioxide, 3-6 parts of silica, 4-6 parts of acrylic copolymer, 5-12 parts of toner and polyacrylate 2-5
Part, it is uniformly mixed, in 130-140 DEG C of melting extrusion, cooling broken acquisition modified powder coating；
(5) electrostatic spraying and solidification: by the modified powder coating electrostatic spraying to heat-insulation aluminum section, then in 100-120
Solidify 10-18min at DEG C；
(6) carving is handled:
I I takes bed die to fix the aluminum profile after solidification, then carving is carried out to by carving surface with numerical control carving machine, by carving surface
Pattern depth be the aluminum profile thickness 1/3-1/2;
II II paints for the first time: carrying out horniness anode oxide film coloring treatment to aluminium shape surface；Specifically it is in current density
4-5 amperes/square decimeter, temperature be to carry out hard anodizing in 22-28 DEG C of electrolyte, contain in the electrolyte:
Sulfuric acid 150-230g/ liter, acetic acid 4-8g/ liter, the mixed liquor 25- of 1:1 is mixed into molar ratio hydroxyacetic acid and succinic acid
35g/ liter；
Second of colouring of III.
2. a kind of preparation method of the powder spray heat-insulation aluminum section of surface-engraved according to claim 1, feature exist
In: 8-16 parts of ethylene oxide and propylene oxide copolyethers are also added in step (2) component A.
3. a kind of preparation method of the powder spray heat-insulation aluminum section of surface-engraved according to claim 2, feature exist
In: (2) second polyalcohol of step is with the trimethylolpropane formed using bimetallic cyanide complex catalyst
With the polyol of epoxy butane.
4. a kind of preparation method of the powder spray heat-insulation aluminum section of surface-engraved according to claim 3, feature exist
In: step (2) catalyst is 1-3 parts of triethylene diamines.
5. a kind of preparation method of the powder spray heat-insulation aluminum section of surface-engraved according to claim 4, feature exist
In: step (2) fire retardant is the sulfonate salt flame of 0.2-0.5 parts by weight.
6. a kind of preparation method of the powder spray heat-insulation aluminum section of surface-engraved according to claim 5, feature exist
In: step (4) polyester is the polyethylene terephthalate that 1:1:1 is mixed into molar ratio, poly terephthalic acid fourth two
Ester and carboxyl end group saturated polyester resin mixture.
7. a kind of preparation method of the powder spray heat-insulation aluminum section of surface-engraved according to claim 6, feature exist
In: described be crushed of the step (4) refers to that classification grinding to powder diameter is 1-15 microns.
8. a kind of preparation method of the powder spray heat-insulation aluminum section of surface-engraved according to claim 1-7,
It is characterized by: second colouring successively includes drawing carving style drawing at quarter to carve on paper；Patch carves and draws paper；Allotment paint；It is right
Knurling section primer spray and the paint；Last complementary color and board-washing；The paint formulation is by weight are as follows: 58-68 parts of polyurethane, color
Powder or 5-10 parts of mill base, 4-7 parts of hydroxyalkyl amide, 6-13 parts of polyacrylate, 8-12 parts of deionized water.
9. a kind of preparation method of the powder spray heat-insulation aluminum section of surface-engraved according to claim 8, feature exist
In: 2-3 hours are kept the temperature after 60-80 DEG C of speed is cooled to 350-450 DEG C on an hourly basis after the step (1) is poured into mold, is connect
30-40 DEG C of speed is cooled to 80-100 DEG C of heat preservation 1-2 hours on an hourly basis again；Room temperature cooling demoulds out aluminum profile again.
10. a kind of preparation method of the powder spray heat-insulation aluminum section of surface-engraved according to claim 8, feature exist
In: it is obtained after 30-40 DEG C of speed is cooled to 80-100 DEG C of heat preservation 1-2 hours on an hourly basis after the step (1) is poured into mold
First heat preservation product；The first heat preservation product are heated to 380-440 DEG C, heat preservation obtains the second heat preservation product in 0.5-1 hours；Then sharp
Product extrusion molding is kept the temperature by described second with extruder；Molding to be extruded is down to 80-100 DEG C, quenches 20-40s, then room temperature
It is cooling.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114958196A (en) * | 2022-06-29 | 2022-08-30 | 广东华江粉末科技有限公司 | High-temperature-resistant black wrinkle powder coating and preparation method thereof |
-
2017
- 2017-11-27 CN CN201711209448.4A patent/CN109834026A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114958196A (en) * | 2022-06-29 | 2022-08-30 | 广东华江粉末科技有限公司 | High-temperature-resistant black wrinkle powder coating and preparation method thereof |
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Application publication date: 20190604 |