CN113637363B - Cerium oxide reflective heat-insulating color paste and preparation method thereof - Google Patents
Cerium oxide reflective heat-insulating color paste and preparation method thereof Download PDFInfo
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- CN113637363B CN113637363B CN202111135588.8A CN202111135588A CN113637363B CN 113637363 B CN113637363 B CN 113637363B CN 202111135588 A CN202111135588 A CN 202111135588A CN 113637363 B CN113637363 B CN 113637363B
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- cerium oxide
- color paste
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- reflective heat
- insulating
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- 229910000420 cerium oxide Inorganic materials 0.000 title claims abstract description 51
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 239000002270 dispersing agent Substances 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- 239000008367 deionised water Substances 0.000 claims abstract description 9
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 9
- 239000011268 mixed slurry Substances 0.000 claims description 9
- 239000004576 sand Substances 0.000 claims description 7
- 238000000227 grinding Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 5
- 239000012752 auxiliary agent Substances 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000009736 wetting Methods 0.000 claims description 3
- -1 amine compounds Chemical class 0.000 claims description 2
- 229920003086 cellulose ether Polymers 0.000 claims description 2
- 239000002480 mineral oil Substances 0.000 claims description 2
- 235000010446 mineral oil Nutrition 0.000 claims description 2
- 229920000058 polyacrylate Polymers 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 2
- 239000000853 adhesive Substances 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 claims 1
- 239000003973 paint Substances 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 5
- 238000002310 reflectometry Methods 0.000 abstract description 3
- 239000011810 insulating material Substances 0.000 abstract 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 28
- 235000010215 titanium dioxide Nutrition 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 10
- 238000000576 coating method Methods 0.000 description 9
- 239000011248 coating agent Substances 0.000 description 8
- 239000004408 titanium dioxide Substances 0.000 description 8
- 239000011521 glass Substances 0.000 description 5
- 239000000839 emulsion Substances 0.000 description 4
- 239000000049 pigment Substances 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- 239000013530 defoamer Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000004005 microsphere Substances 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229910052684 Cerium Inorganic materials 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 230000000844 anti-bacterial effect Effects 0.000 description 2
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 1
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000005524 ceramic coating Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 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 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
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
- C09D17/00—Pigment pastes, e.g. for mixing in paints
- C09D17/004—Pigment pastes, e.g. for mixing in paints containing an inorganic pigment
- C09D17/007—Metal oxide
Abstract
The invention provides cerium oxide reflective heat-insulating color paste and a preparation method thereof, wherein the cerium oxide reflective heat-insulating color paste comprises the following components in parts by weight: 55-75 parts of cerium oxide; 0.5 to 2.0 portions of dispersing agent; 0.2 to 1.0 part of defoaming agent; 0.1 to 0.5 part of anti-settling agent; 0.1 to 0.3 part of pH regulator; 22-45 parts of deionized water. The color paste provided by the invention uses single cerium oxide as a reflective heat-insulating material, has high near infrared reflectivity and excellent heat-insulating performance, can effectively reduce the surface and internal temperature of a building when being added into base paint, and provides a new choice for the reflective material.
Description
Technical Field
The invention belongs to the field of preparation of aqueous color paste, and particularly relates to cerium oxide reflective heat-insulating color paste and a preparation method thereof.
Background
Under the irradiation of sunlight, the energy on the surface of the object is accumulated, so that the surface and internal temperature is increased, and the energy consumption and waste are caused. The reflective heat-insulating coating can effectively reflect, block and radiate solar energy, reduce the temperature of the outer wall and the indoor of a building, reduce energy consumption and carbon emission, and improve the working and living environments of people.
At present, white reflective heat-insulating paint mainly using rutile type titanium dioxide as a main pigment in the market is supplemented with fillers such as mica powder, kaolin, talcum powder, aluminum oxide, hollow glass beads and the like to jointly play a role in reflective heat insulation, and the paint has the defects of low reflectivity of near infrared bands, higher price of the rutile type titanium dioxide, few color types and the like.
Among rare earth elements, cerium is the most abundant in nature. Cerium oxide is a material with great potential for application and is widely used in the fields of catalysis, corrosion prevention, photocatalysis, ultraviolet absorbers, thermal insulation coatings, glass abrasives and the like due to the special physical and chemical properties of cerium. Patent CN103333581B discloses application of nano cerium oxide in epoxy composite coating, wherein the addition amount of nano cerium oxide in the coating after modification treatment of titanate coupling agent is not more than 10%, so that the coating has good anti-corrosion performance. Patent CN109852177A discloses that cerium oxide is added into a heat-insulating ceramic coating to solve the problems of cracking and falling off of a color paste film, and the cerium oxide is matched with compounds such as nano zinc oxide to play a role in shielding infrared rays and reflecting ultraviolet rays. However, the preparation of color paste by taking cerium oxide as a main raw material has not been reported yet.
Disclosure of Invention
In view of the above, the invention aims to overcome the defects in the prior art, and provides cerium oxide reflective heat-insulating color paste and a preparation method thereof.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
the cerium oxide reflective heat-insulating color paste comprises the following components in parts by weight:
55-75 parts of cerium oxide;
0.5 to 2.0 portions of dispersing agent;
0.2 to 1.0 part of defoaming agent;
0.1 to 0.5 part of anti-settling agent;
0.1 to 0.3 part of pH regulator;
22-45 parts of deionized water.
Preferably, the purity of the cerium oxide is not less than 99.99%, and the particle diameter D (90) is 1.0 μm to 3.0. Mu.m.
Preferably, the dispersant is a polyacrylate wetting dispersant.
Preferably, the defoamer is a mineral oil defoamer.
Preferably, the anti-settling agent is a soluble cellulose ether compound.
Preferably, the pH regulator is a multifunctional auxiliary agent containing organic amine compounds.
The invention also provides a preparation method of the cerium oxide reflective heat-insulating color paste, which comprises the following steps:
(1) Stirring cerium oxide, a dispersing agent, a defoaming agent and deionized water to obtain a mixed slurry, and grinding the mixed slurry in a sand mill; (2) And (3) uniformly mixing the ground mixed slurry and the anti-settling agent in a high-speed dispersing machine at 400-800 rpm, and then adding the pH regulator to disperse at the high speed of 300-500 rpm to obtain the reflective heat-insulating cerium oxide color paste.
Preferably, in the step (1), the sand mill is milled until the particle diameter D (90) of the cerium oxide is 1.0 μm to 3.0 μm.
Compared with the prior art, the invention has the following advantages:
(1) The color paste prepared by the invention takes single cerium oxide as a reflective heat insulation material, has high near infrared reflectivity and excellent heat insulation performance, can effectively reduce the surface and internal temperature of a building when being added into base paint, and provides a new choice for the reflective material.
(2) Compared with rutile type titanium dioxide, cerium oxide is easier to dye, a small amount of pigment is added into the reflective heat-insulating color paste, the color of the color paste achieves a better effect, and the reflective heat-insulating effect of the color paste is less affected.
(3) The cerium oxide is one of important antibacterial materials, the antibacterial and mildew-proof effects are remarkable and durable, and mildew-proof antibacterial agents can be reduced or not added in the color paste.
(4) The color paste prepared by the invention does not contain toxic and harmful elements such as heavy metals, has low volatility, is water-based color paste friendly to human bodies and environment, and can be used for outdoor paint and indoor paint.
(5) In the prior art, nano cerium oxide is usually added into the paint in a small amount as an additive, and the addition amount is mostly between 1% and 25% by mass percent, so that the nano cerium oxide is used for anticorrosive paint by utilizing the anticorrosive property. The cerium oxide in the invention has a micron-sized central grain diameter, and the mass percentage of the cerium oxide in the color paste reaches 55-75%. The reflective heat-insulating color paste with high sunlight reflective performance is prepared by utilizing cerium oxide for the first time.
Detailed Description
Unless defined otherwise, technical terms used in the following examples have the same meaning as commonly understood by one of ordinary skill in the art to which the inventive concepts pertain. The test reagents used in the following examples, unless otherwise specified, are all conventional biochemical reagents; the experimental methods are conventional methods unless otherwise specified.
The material types and purchase routes used in the examples were:
rutile type titanium dioxide: CR-828 titanium dioxide purchased from Shandong Chiyu chemical industry Co., ltd;
cerium oxide: 4N cerium oxide purchased from northern rare earth;
dispersing agent: LOPON 885 dispersant purchased from BK Giulini, germany;
defoaming agent: foamaster 50 defoamer purchased from Cognis, germany;
anti-settling agent: hydroxyethyl cellulose purchased from the company Pengyu chemical Co., ltd;
pH regulator: codistuffer G3 organic amine modifier purchased from Shenzhen sea wetting chemical Co., ltd;
deionized water: treating tap water by reverse osmosis water purifying equipment;
hollow glass microspheres: purchased from the Miner's mineral processing plant, particle size 60 μm;
aqueous pure acrylic emulsion: 896 type emulsion purchased from Jinan Zi chemical technology Co., ltd;
the invention will be described in detail with reference to examples.
The preparation method of the cerium oxide reflective heat-insulating color paste in the embodiment comprises the following steps:
(1) Mixing cerium oxide, a dispersing agent, a defoaming agent and deionized water, pre-dispersing to obtain mixed slurry, and grinding the mixed slurry in a sand mill until the particle size D (90) of the cerium oxide is 1.8 mu m;
(2) And (3) uniformly mixing the ground mixed slurry and the anti-settling agent in a high-speed dispersing machine at 600rpm, and then adding the pH regulator to disperse at 400rpm to obtain the reflective heat-insulating cerium oxide color paste.
The raw material ratios of examples 1-5 and comparative examples are shown in the following table:
table 1 examples 1-5 and comparative example 1 color paste formulation table (percent)
The color pastes obtained in examples 1 to 5 and comparative example 1 were tested, and the test results are shown in the following table:
table 2 color paste performance index of examples 1-5 and comparative example 1
As can be seen from the test results in Table 2, the cerium oxide reflective heat-insulating color paste of examples 1 to 5 has good stability, and has no layering, precipitation and other phenomena after 3 months of storage, and the solar reflectance is equivalent to that of the basic titanium white paste, and the near infrared reflectance is obviously higher than that of the basic titanium white paste.
Example 6
The preparation method of the color paste in the embodiment comprises the following steps: mixing 65% of cerium oxide, 1.5% of dispersing agent, 1.0% of defoaming agent and 31.6% of deionized water according to mass percentage, pre-dispersing, pumping into a sand mill, and grinding until the cerium oxide D (90) is 1.8 mu m; the slurry and the anti-settling agent are mixed for 10 minutes at a high speed of 600rpm in a high-speed dispersing machine, wherein 0.2 percent of inorganic yellow paste is added with 0.5 percent of pH regulator and dispersed for 5 minutes at a high speed of 400 rpm.
Comparative example 2
The preparation method of the color paste in the comparative example comprises the following steps: stirring 65% of rutile titanium dioxide, 1.5% of dispersing agent, 1.0% of defoaming agent and 30.8% of deionized water according to mass percentage for pre-dispersing, and pumping into a sand mill for grinding for one time; the slurry and the anti-settling agent are mixed for 10 minutes at a high speed of 600rpm in a high-speed dispersing machine, wherein 1.0 percent of inorganic yellow paste is mixed with 0.5 percent of pH regulator, and the mixture is dispersed for 5 minutes at a high speed of 400 rpm.
TABLE 3 Performance index for example 6 and comparative example 2
Adding 0.2% of inorganic yellow paste and 1% of inorganic yellow paste into the cerium oxide reflective heat-insulating color paste to obtain color paste L * a * b * The values are similar, and the solar reflectance and the near infrared reflectance of the cerium oxide color paste are far higher than those of the titanium white color paste.
Example 7
The preparation method of the color paste in the embodiment comprises the following steps: according to the mass percentage, 40% of cerium oxide slurry, 5% of rutile type titanium dioxide, 5% of filler, 6% of hollow glass microspheres, 38% of aqueous pure acrylic emulsion, 2% of auxiliary agent and 4% of water are stirred and mixed at a high speed in a dispersing machine to obtain the reflective heat-insulating coating taking cerium oxide as a main pigment.
Comparative example 3
The preparation method of the color paste in the comparative example comprises the following steps: according to the mass percentage, 30 percent of rutile titanium dioxide, 5 percent of filler, 6 percent of hollow glass microsphere, 38 percent of water-based pure acrylic emulsion, 3 percent of auxiliary agent and 18 percent of water are stirred and mixed at high speed in a dispersing machine to obtain the reflective heat-insulating coating taking the rutile titanium dioxide as a main pigment.
Table 4 performance metrics for example 7 and comparative example 3
| Project | Example 7 | ComparisonExample 3 |
| L * | 96.5 | 98.0 |
| a * | -2.0 | -1.1 |
| b * | 5.6 | 2.1 |
| Solar reflectance | 0.86 | 0.85 |
| Near infrared reflectance | 0.89 | 0.80 |
The white reflective heat-insulating coating is added with cerium oxide color paste to replace part of rutile type titanium dioxide, the consumption of titanium dioxide is reduced from 30% to 5%, the solar reflectance of the coating is not changed greatly, and the near infrared reflectance is obviously improved.
The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. The cerium oxide reflective heat-insulating color paste is characterized in that: the adhesive comprises the following components in parts by weight, based on 100 parts by weight:
55-75 parts of cerium oxide;
0.5 to 2.0 portions of dispersing agent;
0.2 to 1.0 part of defoaming agent;
0.1 to 0.5 part of anti-settling agent;
0.1 to 0.3 part of pH regulator;
22-45 parts of deionized water;
wherein the purity of the cerium oxide is not lower than 99.99%, and the particle diameter D (90) is 1.0-3.0 mu m;
the dispersing agent is polyacrylate wetting dispersing agent;
the defoaming agent is a mineral oil defoaming agent;
the anti-settling agent is a soluble cellulose ether compound;
the pH regulator is a multifunctional auxiliary agent containing organic amine compounds.
2. A method for preparing the cerium oxide reflective heat-insulating color paste according to claim 1, which is characterized in that: the preparation method comprises the following steps:
(1) Stirring cerium oxide, a dispersing agent, a defoaming agent and deionized water to obtain a mixed slurry, and grinding the mixed slurry in a sand mill;
(2) And (3) uniformly mixing the ground mixed slurry and the anti-settling agent in a high-speed dispersing machine at 400-800 rpm, and then adding the pH regulator to disperse at the high speed of 300-500 rpm to obtain the reflective heat-insulating cerium oxide color paste.
3. The method for preparing the cerium oxide reflective heat-insulating color paste according to claim 2, which is characterized in that: the step (1) is performed by grinding with a sand mill until the particle diameter D (90) of the cerium oxide is 1.0-3.0 mu m.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111135588.8A CN113637363B (en) | 2021-09-27 | 2021-09-27 | Cerium oxide reflective heat-insulating color paste and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111135588.8A CN113637363B (en) | 2021-09-27 | 2021-09-27 | Cerium oxide reflective heat-insulating color paste and preparation method thereof |
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| CN113637363B true CN113637363B (en) | 2023-08-04 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104277653B (en) * | 2014-09-29 | 2017-05-17 | 潜伟清 | Ultrathin high-temperature-resistant thermal-insulation paint |
| CN108329811A (en) * | 2017-12-28 | 2018-07-27 | 南京精工新材料有限公司 | A kind of transparent UV resistance insulating moulding coating |
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