CN115260880A - High-heat-insulation powder coating for aluminum profile and preparation method thereof - Google Patents
High-heat-insulation powder coating for aluminum profile and preparation method thereof Download PDFInfo
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- CN115260880A CN115260880A CN202210762520.0A CN202210762520A CN115260880A CN 115260880 A CN115260880 A CN 115260880A CN 202210762520 A CN202210762520 A CN 202210762520A CN 115260880 A CN115260880 A CN 115260880A
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- 239000011248 coating agent Substances 0.000 title claims abstract description 62
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 23
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims description 8
- 239000011521 glass Substances 0.000 claims abstract description 61
- 239000011324 bead Substances 0.000 claims abstract description 40
- 239000002994 raw material Substances 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 12
- 229920001225 polyester resin Polymers 0.000 claims abstract description 8
- 239000004645 polyester resin Substances 0.000 claims abstract description 8
- OUPZKGBUJRBPGC-UHFFFAOYSA-N 1,3,5-tris(oxiran-2-ylmethyl)-1,3,5-triazinane-2,4,6-trione Chemical compound O=C1N(CC2OC2)C(=O)N(CC2OC2)C(=O)N1CC1CO1 OUPZKGBUJRBPGC-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000945 filler Substances 0.000 claims abstract description 6
- 239000004005 microsphere Substances 0.000 claims description 25
- 238000002156 mixing Methods 0.000 claims description 23
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 21
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- 238000003756 stirring Methods 0.000 claims description 16
- 239000000243 solution Substances 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Chemical compound CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 claims description 12
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 11
- 239000008367 deionised water Substances 0.000 claims description 10
- 229910021641 deionized water Inorganic materials 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 10
- 238000005406 washing Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 238000007873 sieving Methods 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 4
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 239000011259 mixed solution Substances 0.000 claims description 4
- 239000003921 oil Substances 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 3
- 239000005995 Aluminium silicate Substances 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 235000012211 aluminium silicate Nutrition 0.000 claims description 3
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 239000010445 mica Substances 0.000 claims description 3
- 229910052618 mica group Inorganic materials 0.000 claims description 3
- 229920000058 polyacrylate Polymers 0.000 claims description 3
- -1 polysiloxane Polymers 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 239000004408 titanium dioxide Substances 0.000 claims description 3
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 2
- 229920001577 copolymer Polymers 0.000 claims description 2
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims 1
- 238000004321 preservation Methods 0.000 abstract description 6
- 239000006185 dispersion Substances 0.000 abstract description 4
- 239000002245 particle Substances 0.000 abstract description 4
- 229920000728 polyester Polymers 0.000 abstract description 4
- 238000005282 brightening Methods 0.000 abstract description 3
- 238000000967 suction filtration Methods 0.000 description 9
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 235000019441 ethanol Nutrition 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000010451 perlite Substances 0.000 description 3
- 235000019362 perlite Nutrition 0.000 description 3
- 229960000583 acetic acid Drugs 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 125000004185 ester group Chemical group 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Chemical group CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 239000012362 glacial acetic acid Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000010455 vermiculite Substances 0.000 description 2
- 235000019354 vermiculite Nutrition 0.000 description 2
- 229910052902 vermiculite Inorganic materials 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 238000007590 electrostatic spraying Methods 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Abstract
The invention discloses a high-heat-insulation powder coating for an aluminum profile, which belongs to the technical field of powder coatings and comprises the following raw materials in parts by weight: 50-60 parts of polyester resin, 20-25 parts of modified hollow glass beads, 18-26 parts of filler, 4-5 parts of triglycidyl isocyanurate, 1.2-1.4 parts of flatting agent and 1.0-1.2 parts of brightening agent. According to the invention, the hollow glass beads are modified, organic molecular chains are introduced to the surfaces of the hollow glass beads, so that the uniform dispersion of the hollow glass beads in the coating is promoted, a layer of cavity particle groups formed by the hollow beads is formed in the coating, and the heat insulation property of the coating is improved; flexible organic molecular chains introduced to the surface of the coating can be inserted among polyester molecular chains to play a role in internal plasticization, so that the toughness of the coating is improved to a certain extent; the obtained powder coating has excellent heat insulation performance and mechanical property, and can play a role in heat insulation and preservation when being coated on the surface of an aluminum profile, thereby expanding the application field of the aluminum profile.
Description
Technical Field
The invention belongs to the technical field of powder coatings, and particularly relates to a high-heat-insulation powder coating for an aluminum profile and a preparation method thereof.
Background
The powder coating has the characteristics of resource saving, energy saving, no pollution, high labor productivity, convenient realization of automatic coating and the like, is a well-known ecological environment-friendly coating product with high production efficiency, excellent coating performance and economy, has the fastest development speed in various coating varieties, and provides space for the development of a plurality of functional coatings. Powder coatings are widely applied to surface coating of metal materials, and because metals have good thermal conductivity, the requirements of heat preservation performance and heat insulation performance of common metal workpieces are difficult to achieve through powder coating, so that the application of the powder coatings in some specific fields is limited.
In order to improve the heat insulation performance of the powder coating, methods of using expanded perlite, hollow glass beads and the like as coating raw materials are frequently adopted in the prior art. For example, the Chinese patent with the application number of 201110392261.9 discloses a heat-insulating powder coating for an aluminum alloy section and a preparation method thereof. The coating comprises the following components in percentage by mass: 48-58 g of film forming agent, 3.6-4.3 g of curing agent, 1.0g of flatting agent, 1.0g of brightener, 0.2 g of degassing agent, 20-30 g of heat insulation component and 16-36 g of filler, wherein the heat insulation component is one or the combination of expanded vermiculite and expanded perlite. Because the heat insulation components (expanded vermiculite, expanded perlite or hollow glass beads) belong to inorganic materials, the heat insulation components have poor compatibility with a film forming matrix (polymer) of the powder coating, and are difficult to uniformly disperse, the effect of the heat insulation performance of the powder coating is improved by the heat insulation components.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a high-heat-insulation powder coating for an aluminum profile and a preparation method thereof.
According to the invention, the hollow glass beads are modified, and organic molecular chains are introduced to the surfaces of the hollow glass beads, so that the uniform dispersion of the hollow glass beads in the powder coating can be promoted, a layer of cavity particle group formed by the hollow beads can be formed in the coating, and the heat insulation property of the coating is improved; flexible organic molecular chains introduced into the surface of the polyester film can be inserted among polyester molecular chains to play a role in internal plasticization, so that the toughness of the film is improved to a certain extent; the obtained powder coating has excellent heat-insulating property and mechanical property, and can play a role in heat insulation and preservation when being coated on the surface of an aluminum profile, thereby enlarging the application field of the aluminum profile.
The purpose of the invention can be realized by the following technical scheme:
a high heat insulation powder coating for an aluminum profile comprises the following raw materials in parts by weight: 50-60 parts of polyester resin, 20-25 parts of modified hollow glass beads, 18-26 parts of filler, 4-5 parts of triglycidyl isocyanurate, 1.2-1.4 parts of flatting agent and 1.0-1.2 parts of brightening agent.
Furthermore, the leveling agent is one or a combination of a plurality of polyacrylate, polysiloxane and silicon-containing acrylate according to any proportion.
Further, the brightening agent is a copolymer of butyl acrylate and methyl methacrylate.
Furthermore, the filler is one or a combination of more of mica powder, titanium dioxide, kaolin, barium sulfate, diatomite and talcum powder according to any proportion.
A preparation method of a high-heat-insulation powder coating for an aluminum profile comprises the following specific steps:
adding the raw materials into a high-speed mixer according to the weight ratio, mixing for 12-15min to fully and uniformly mix the components, feeding the uniformly mixed materials into a double-screw mixing extruder, mixing and extruding, tabletting through a cold roller after discharging, cooling to room temperature, crushing at high speed, and sieving through a 200-mesh sieve to obtain the heat-insulating powder coating.
Further, the modified hollow glass microspheres are prepared by the following steps:
s1, uniformly mixing hollow glass microsphere powder and a NaOH solution (the mass fraction is 40%) according to a solid-to-liquid ratio of 1g to 115mL, stirring for 90min in a water bath kettle at 80 ℃, after the mixed solution is cooled, performing suction filtration, washing for 4-5 times by using absolute ethyl alcohol and deionized water in sequence, and fully drying to obtain pretreated glass microspheres;
after the treatment of alkali liquor (NaOH solution), more-OH is formed on the surface of the hollow glass microsphere, so that more reaction sites are provided for subsequent surface grafting modification;
s2, dissolving a silane coupling agent KH560 by using an ethanol aqueous solution with the mass fraction of 90%, preparing a dissolving solution with the mass fraction of 0.01g/mL, adjusting the pH to 5.0, adding pretreated glass microspheres into the dissolving solution at a low-speed stirring speed according to the solid-to-liquid ratio of 1g to 20mL, stirring for 30-40min, performing suction filtration, washing for 4-5 times by using absolute ethyl alcohol and deionized water in sequence, and fully drying to obtain pre-modified glass microspheres;
under the treatment of a silane coupling agent KH560, one end of siloxane of the coupling agent is communicatedGrafting the surface of the hollow glass microsphere with-OH combination on the surface of the hollow glass microsphere so as to introduce the-OH combination on the surface of the hollow glass microsphere
A chain group;
s3, mixing the pre-modified glass beads, butyric acid and DMF (dimethyl formamide), adding into a three-neck flask, stirring and reacting for 8 hours under the condition of 110 ℃ oil bath, cooling, performing suction filtration, washing for 4-5 times in sequence by using absolute ethyl alcohol and deionized water, and fully drying to obtain modified hollow glass beads; the dosage ratio of the pre-modified glass beads to the butyric acid to the DMF is 1g;
the epoxy group on the surface of the hollow glass microsphere and-COOH on butyric acid molecule generate ring-opening reaction to generate
A chain group;
after the hollow glass beads are modified, organic chain groups are introduced to the surfaces of the hollow glass beads, so that the compatibility of the hollow glass beads with a polyester resin matrix can be effectively improved, the organic chain groups contain ester groups, ether bonds and other groups, the organic chain groups have similar polarity mutual solubility with ester groups of polyester resin, and the uniform dispersion of the hollow glass beads can be promoted; the hollow glass beads have the characteristics of high compressive strength, high melting point, high resistivity, small thermal conductivity coefficient, small thermal shrinkage coefficient and the like, and the hollow glass beads uniformly dispersed in the coating are beneficial to forming a layer of cavity particle group consisting of the hollow beads in the coating, so that the heat insulation property of the coating is improved, the flowability of the coating is improved, and the chemical resistance and the flame retardance of the coating can be improved due to the chemical inertness of the coating;
in addition, the organic chain group grafted on the surface of the hollow glass bead is a longer flexible chain, and ether bonds in the organic chain group are easy to rotate, so that the flexibility of the chain can be further increased, the flexible chain can be inserted between polyester molecular chains to play a role in internal plasticization, and the toughness of the coating film is further improved to a certain extent.
The invention has the beneficial effects that:
according to the invention, the hollow glass beads are modified, and organic molecular chains are introduced to the surfaces of the hollow glass beads, so that the uniform dispersion of the hollow glass beads in the powder coating can be promoted, a layer of cavity particle group formed by the hollow beads can be formed in the coating, and the heat insulation property of the coating is improved; flexible organic molecular chains introduced to the surface of the coating can be inserted among polyester molecular chains to play a role in internal plasticization, so that the toughness of the coating is improved to a certain extent; the obtained powder coating has excellent heat-insulating property and mechanical property, and can play a role in heat insulation and preservation when being coated on the surface of an aluminum profile, thereby enlarging the application field of the aluminum profile.
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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Example 1
Preparing modified hollow glass beads:
s1, uniformly mixing 10g of hollow glass microsphere powder with 150mL of NaOH solution (the mass fraction is 40%), stirring for 90min in a water bath kettle at 80 ℃, after the mixed solution is cooled, performing suction filtration, washing for 4 times by using absolute ethyl alcohol and deionized water in sequence, and fully drying to obtain pretreated glass microspheres;
s2, dissolving a silane coupling agent KH560 by using an ethanol aqueous solution with the mass fraction of 90%, preparing a solution with the mass fraction of 0.01g/mL, adjusting the pH to 5.0 by using glacial acetic acid, adding 10g of pretreated glass microspheres into 200mL of the solution under low-speed stirring, stirring for 30min, performing suction filtration, washing for 4 times by using absolute ethyl alcohol and deionized water in sequence, and fully drying to obtain pre-modified glass microspheres;
and S3, mixing 10g of pre-modified glass beads, 1g of butyric acid and 300mL of DMF, adding into a three-neck flask, stirring and reacting for 8 hours under the condition of 110 ℃ oil bath, cooling, performing suction filtration, washing for 4 times in sequence by using absolute ethyl alcohol and deionized water, and fully drying to obtain the modified hollow glass beads.
Example 2
Preparing modified hollow glass beads:
s1, uniformly mixing 20g of hollow glass microsphere powder with 300mL of NaOH solution (the mass fraction is 40%), stirring for 90min in a water bath kettle at 80 ℃, after the mixed solution is cooled, performing suction filtration, washing for 5 times by using absolute ethyl alcohol and deionized water in sequence, and fully drying to obtain pretreated glass microspheres;
s2, dissolving a silane coupling agent KH560 by using an ethanol aqueous solution with the mass fraction of 90% to prepare a solution with the mass fraction of 0.01g/mL, adjusting the pH to 5.0 by using glacial acetic acid, adding 20g of pretreated glass microspheres into 400mL of the solution under low-speed stirring, stirring for 40min, performing suction filtration, washing for 5 times by using absolute ethanol and deionized water in sequence, and fully drying to obtain the pre-modified glass microspheres;
and S3, mixing 20g of pre-modified glass beads, 2g of butyric acid and 600mL of DMF, adding into a three-neck flask, stirring and reacting for 8 hours under the condition of 110 ℃ oil bath, cooling, performing suction filtration, washing for 5 times in sequence by using absolute ethyl alcohol and deionized water, and fully drying to obtain the modified hollow glass beads.
Example 3
A high heat insulation powder coating for an aluminum profile comprises the following raw materials: 50g of polyester resin, 20g of the modified hollow glass microspheres prepared in example 1, 18g of mica powder, 4g of triglycidyl isocyanurate, 1.2g of polyacrylate and 1.0g of brightener;
adding the raw materials into a high-speed mixer according to the weight ratio, mixing for 12min to fully and uniformly mix the components, feeding the uniformly mixed material into a double-screw mixing extruder, mixing and extruding, tabletting through a cold roller after discharging, cooling to room temperature, crushing at high speed, and sieving through a 200-mesh sieve to obtain the heat-insulation and heat-preservation powder coating.
Example 4
A high heat insulation powder coating for aluminum profiles comprises the following raw materials: 55g of polyester resin, 23g of modified hollow glass microspheres prepared in example 2, 22g of titanium dioxide, 4.5g of triglycidyl isocyanurate, 1.3g of polysiloxane and 1.1g of brightener;
adding the raw materials into a high-speed mixer according to the weight ratio, mixing for 14min to fully and uniformly mix the components, feeding the uniformly mixed material into a double-screw mixing extruder, mixing and extruding, tabletting through a cold roller after discharging, cooling to room temperature, crushing at high speed, and sieving through a 200-mesh sieve to obtain the heat-insulating powder coating.
Example 5
A high heat insulation powder coating for aluminum profiles comprises the following raw materials: 60g of polyester resin, 25g of modified hollow glass microspheres prepared in example 1, 26g of kaolin, 5g of triglycidyl isocyanurate, 1.4g of silicon-containing acrylate and 1.2g of brightener;
adding the raw materials into a high-speed mixer according to the weight ratio, mixing for 15min to fully and uniformly mix the components, feeding the uniformly mixed material into a double-screw mixing extruder, mixing and extruding, tabletting through a cold roller after discharging, cooling to room temperature, crushing at high speed, and sieving through a 200-mesh sieve to obtain the heat-insulation and heat-preservation powder coating.
Comparative example
The modified hollow glass microspheres obtained in example 3 were replaced with ordinary hollow glass microspheres, and the remaining raw materials and preparation process were not changed.
The powder coatings obtained in examples 3-5 and comparative example were sprayed on the surface of the metal plate after degreasing and rust removal by electrostatic spraying, and then baked and cured in an oven at 200 ℃ for 10min to form a coating, and the following performance tests were performed:
the impact resistance was tested according to GB/T1732-1993; adhesion (cross-hatch method): testing according to GB/T9286-1998; testing the thermal conductivity of the coating film;
the results obtained are shown in the following table:
| example 3 | Example 4 | Example 5 | Comparative example | |
| Impact (50 cm) | Positive and negative pass | Positive and negative pass | Positive and negative pass | Forward over reverse cracking |
| Adhesion/grade | 0 | 0 | 0 | 1 |
| Thermal conductivity/W.K-1·m-1 | 0.122 | 0.121 | 0.122 | 0.133 |
The data in the table show that the powder coating prepared by the invention has higher toughness and higher heat insulation performance (the lower the thermal conductivity, the better the heat insulation performance), and the adhesive force can also meet the use requirement of the powder coating; according to the data of the comparative example, the hollow glass beads can be uniformly dispersed after being modified, so that the heat insulation effect can be better exerted, and the toughening effect can be achieved to a certain degree.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is illustrative and explanatory only, and it will be appreciated by those skilled in the art that various modifications, additions and substitutions can be made to the embodiments described without departing from the scope of the invention as defined in the appended claims.
Claims (7)
1. The high-heat-insulation powder coating for the aluminum profile is characterized by comprising the following raw materials in parts by weight: 50-60 parts of polyester resin, 20-25 parts of modified hollow glass beads, 18-26 parts of filler, 4-5 parts of triglycidyl isocyanurate, 1.2-1.4 parts of flatting agent and 1.0-1.2 parts of brightener;
the modified hollow glass bead is prepared by the following steps:
s1, uniformly mixing hollow glass bead powder and a NaOH solution according to a solid-liquid ratio of 1g to 115mL, stirring for 90min in a water bath kettle at 80 ℃, and performing post-treatment after the mixed solution is cooled to obtain pretreated glass beads;
s2, dissolving a silane coupling agent KH560 by using an ethanol aqueous solution with the mass fraction of 90%, preparing a solution with the mass fraction of 0.01g/mL, adjusting the pH to 5.0, adding pretreated glass microspheres into the solution under low-speed stirring according to the solid-to-liquid ratio of 1g to 20mL, stirring for 30-40min, and performing post-treatment to obtain pretreated glass microspheres;
and S3, mixing the pre-modified glass beads, butyric acid and DMF (dimethyl formamide), adding into a three-neck flask, stirring and reacting for 8 hours under the condition of 110 ℃ oil bath, cooling, and performing post-treatment to obtain the modified hollow glass beads.
2. The high thermal insulation powder coating for aluminum profiles as claimed in claim 1, wherein the mass fraction of NaOH solution in step S1 is 40%.
3. The high thermal insulation powder coating for the aluminum profile as claimed in claim 1, wherein the post-treatment process comprises the following steps: filtering, washing with anhydrous alcohol and deionized water for 4-5 times, and drying.
4. The high-heat-insulation powder coating for the aluminum profile as claimed in claim 1, wherein the leveling agent is one or a combination of a plurality of polyacrylate, polysiloxane and silicon-containing acrylate in any proportion.
5. The high thermal insulation powder coating for aluminum profiles as claimed in claim 1, wherein the brightener is a copolymer of butyl acrylate and methyl methacrylate.
6. The high-heat-insulation powder coating for the aluminum profile as claimed in claim 1, wherein the filler is one or a combination of mica powder, titanium dioxide, kaolin, barium sulfate, diatomite and talc powder in any proportion.
7. The preparation method of the high heat insulation powder coating for the aluminum profile according to claim 1 is characterized by comprising the following specific steps:
adding the raw materials into a high-speed mixer according to the weight ratio, mixing for 12-15min to fully and uniformly mix the components, feeding the uniformly mixed materials into a double-screw mixing extruder, mixing and extruding, tabletting through a cold roller after discharging, cooling to room temperature, crushing at high speed, and sieving through a 200-mesh sieve to obtain the heat-insulating powder coating.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101857768A (en) * | 2010-06-18 | 2010-10-13 | 上海纳米技术及应用国家工程研究中心有限公司 | Ultrasonically-modified nano heat-insulating powder coating for aluminum alloy section and method for preparing same |
| CN103865295A (en) * | 2014-02-13 | 2014-06-18 | 甘肃康博丝特新材料有限责任公司 | Method for polymer surface modification of hollow glass micro-bead |
| CN106065259A (en) * | 2016-06-08 | 2016-11-02 | 合肥市燕美粉末涂料有限公司 | A kind of containing hollow glass bead noise reduction powdery paints and preparation method thereof |
| CN107011579A (en) * | 2016-12-23 | 2017-08-04 | 郑州圣莱特空心微珠新材料有限公司 | The method of modifying of hollow glass microbead and the resin composite materials prepared using the modification hollow glass microbead |
| CN107555808A (en) * | 2017-09-06 | 2018-01-09 | 安徽凯盛基础材料科技有限公司 | A kind of method of hollow glass micropearl surface hydrophobic processing |
| CN110205004A (en) * | 2019-06-18 | 2019-09-06 | 上海泰梧科技有限公司 | A kind of fast cure polyester powdery paints and preparation method thereof |
| CN111534055A (en) * | 2020-05-10 | 2020-08-14 | 中国科学院理化技术研究所 | Composite material based on modified hollow glass microspheres and preparation method thereof |
-
2022
- 2022-06-29 CN CN202210762520.0A patent/CN115260880B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101857768A (en) * | 2010-06-18 | 2010-10-13 | 上海纳米技术及应用国家工程研究中心有限公司 | Ultrasonically-modified nano heat-insulating powder coating for aluminum alloy section and method for preparing same |
| CN103865295A (en) * | 2014-02-13 | 2014-06-18 | 甘肃康博丝特新材料有限责任公司 | Method for polymer surface modification of hollow glass micro-bead |
| CN106065259A (en) * | 2016-06-08 | 2016-11-02 | 合肥市燕美粉末涂料有限公司 | A kind of containing hollow glass bead noise reduction powdery paints and preparation method thereof |
| CN107011579A (en) * | 2016-12-23 | 2017-08-04 | 郑州圣莱特空心微珠新材料有限公司 | The method of modifying of hollow glass microbead and the resin composite materials prepared using the modification hollow glass microbead |
| CN107555808A (en) * | 2017-09-06 | 2018-01-09 | 安徽凯盛基础材料科技有限公司 | A kind of method of hollow glass micropearl surface hydrophobic processing |
| CN110205004A (en) * | 2019-06-18 | 2019-09-06 | 上海泰梧科技有限公司 | A kind of fast cure polyester powdery paints and preparation method thereof |
| CN111534055A (en) * | 2020-05-10 | 2020-08-14 | 中国科学院理化技术研究所 | Composite material based on modified hollow glass microspheres and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 潘顺龙等: "空心玻璃微球表面功能化及其应用研究进展" * |
| 章诚等: "中空玻璃微珠表面处理对水性隔热涂料性能的影响研究" * |
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Denomination of invention: A high insulation powder coating for aluminum profiles and its preparation method Granted publication date: 20230908 Pledgee: China Construction Bank Co.,Ltd. Anqing Chengzhong Branch Pledgor: Anhui dengwang Chemical Co.,Ltd. Registration number: Y2024980014784 |