CN104458395A - Pollution source with coating contamination resistance, coating contamination resistance testing method and automatic contamination device - Google Patents
Pollution source with coating contamination resistance, coating contamination resistance testing method and automatic contamination device Download PDFInfo
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- CN104458395A CN104458395A CN201410717336.XA CN201410717336A CN104458395A CN 104458395 A CN104458395 A CN 104458395A CN 201410717336 A CN201410717336 A CN 201410717336A CN 104458395 A CN104458395 A CN 104458395A
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Abstract
The invention discloses a pollution source with coating contamination resistance, a coating contamination resistance testing method and an automatic contamination device. The pollution source with coating contamination resistance comprises the following substances: loess dust, organic substances, inorganic carbon and an additive; the automatic contamination device comprises a pollution source placement part, a circulating part, a contamination chamber and a control part. The testing method comprises the following steps: (1) configuring the pollution source; (2) putting the pollution source onto a pollution source placement table, and putting a sample at the position above a sample platform; (3) opening a circulating pump and a vibration device; (4) closing the circulating pump and the vibration device, and starting a heating device; (5) stopping the heating device; (6) washing the contaminated sample by a washing device; and (7) testing the reflection coefficients before and after the sample is contaminated, taking the percentage of the specific value of the absolute value of the reflection coefficients before and after the sample is contaminated and the reflection coefficient before the sample is contaminated as the parameter of the testing method for evaluating the coating contamination resistance. The testing method has the advantages of being low in cost and short in testing time.
Description
Technical field
The present invention relates to coating contaminated resistance field tests, particularly a kind of coating contaminated resistance pollution source, test method and automatically stain equipment.
Background technology
The method that the domestic detection method for coating contaminated resistance specifies according to GB/T 9780-2013 " Test method for dirt resistance of film of architectural coatings and paint " is at present carried out.The method defines pollution source and adopts national standard sample " grey standard substance is used in the test of building coating coating stain resistance ", but not containing organic substance in this standard substance, is not inconsistent with actual air pollutant component, is difficult to the situation simulating the actual contamination of coating; In addition, the contamination method that this standard specifies adopts artificial mode of staiing, contamination process is affected by human factors larger, also be difficult to meet in standard simultaneously and require that brushing amount is every block test specimen (0.7 ± 0.1) g, therefore the method is for evaluating the contaminated resistance not science of coating, abroad, test method for coating stain resistance adopts the mode of heavy natural sunning usually, but, this mode is difficult to standardization, different location and time test findings differ comparatively large, and the used time is longer, and experimentation cost is high.
In sum, also there is no pollution source, the test method of the evaluation coating contaminated resistance of science both at home and abroad and automatically stain equipment.
Summary of the invention
The object of the embodiment of the present invention is the defect for above-mentioned prior art, provides a kind of cost low, pollution source, the test method of the coating contaminated resistance that the test duration is short and automatically stain equipment.
The technical scheme that the present invention takes to achieve these goals is:
Pollution source for coating contaminated resistance, comprise following material: loess dirt, organic substance, inorganic carbon and adjuvant;
Described organic substance is selected from n-eicosane hydrocarbon, Heneicosane hydrocarbon, n-docosane hydrocarbon, n-tricosane hydrocarbon, n-tetracosane hydrocarbon, pentacosane hydrocarbon, n-hexacosane hydrocarbon, heptacosane hydrocarbon, positive octacosane hydrocarbon, positive nonacosane hydrocarbon or positive triacontane hydrocarbon;
Described adjuvant be selected from Stoddard solvent, isomery hexadecane hydrocarbon, struktol WB212 (German struktol company produce a kind of specification be the spreading agent of WB212) or hydrocarbon waxes solid.
Further, the material of following mass percentage is comprised:
Loess dirt 70%-80%, organic substance 5%-15%, inorganic carbon 3%-15%, adjuvant 2%-10%.
Described loess dirt is Chinese loess Standard Reference Materials for Determination (GBW08305), soil constituent analytical standard material-Shaanxi Province's Luochuan Loess (GBW07454), soil constituent analytical standard material-loess (GBW07408) or atmospheric experiment dust standard model-loess dirt (meeting the regulation of GB 13268); Described inorganic carbon is colour carbon black or half reinforcement oven process gas-produced black.
The present invention provides again a kind of contamination equipment automatically, comprises pollution source placing component, circulation member, pollution room, control assembly;
Connect above described pollution source placing component and pollute room, below connects circulation member by pipeline, and the end of described circulation member reaches described pollution indoor, and described control assembly is electrically connected with pollution room with pollution source placing component, circulation member respectively.
Described pollution source placing component comprises the housing of inverted cone column, the inside of described housing is provided with pollution source mounting table, the below of described pollution source mounting table is provided with screen pack, and the bottom of described housing is connected with ebullator by pipeline, and the outside of described housing is provided with vibrating device.
Described circulation member comprises ebullator, air flow rate sensor and distal opening, described ebullator connects pollution room by pipeline, described air flow rate sensor is installed between ebullator and distal opening, described distal opening is circular cone column, and described distal opening reaches the top of described pollution room.
Described pollution room comprises the sample holding chamber that inside is provided with opening, is provided with example platform in described sample holding chamber, described example platform be arranged on described open-ended immediately below, be provided with heating arrangement and temperature sensor below described example platform.
Described control assembly is electrically connected with ebullator, for the open and close of controlled circulation pump, described control assembly is electrically connected with air flow rate sensor, for monitoring the size of air mass flow, described control assembly is electrically connected with heating arrangement and temperature sensor, for heating and the temperature of Quality control platform.
The present invention also provides a kind of coating stain resistant test method, comprises the steps:
1) pollution source are configured;
2) pollution source are positioned over pollution source mounting table, and sample is positioned over above example platform;
3) arrange the rotating speed of ebullator, the opening time of vibration and shut-in time, ON cycle pump and vibrating device make air velocity reach 1-5m/s, and keep 40 minutes-2 hours;
4) close ebullator and vibrating device, open heating arrangement, make the temperature of example platform reach 30-50 DEG C, and keep 0.5-1h;
5) close heating arrangement, take out the sample after staiing, sample has stain automatically.
6) adopt flusher to rinse the sample after staiing, then sample is dried;
7) reflection coefficient of sample contamination front and back is tested, using the ratio percentage of front to the absolute value of reflection coefficient before and after contamination and contamination sample reflection coefficient as the parameter evaluating coating stain resistance test method.
Described configuration pollution source comprise the following steps:
1) loess dirt is placed in the baking oven of 110 DEG C-120 DEG C, takes out after 12-48 hour;
2) organic substance is placed on the Water Tank with Temp.-controlled 10min-30min of 40 DEG C-60 DEG C;
3) inorganic carbon is added in adjuvant stir, obtain potpourri, and this potpourri and loess dirt are added in organic substance successively, be uniformly dispersed with the rotating speed of 400r/min-600r/min with dispersing apparatus; Obtain pollution source.
The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought is:
The present invention utilizes ebullator and the platform with heated constant temperature to realize coating and stains, and the environmental standard of each test is consistent, ensure that the difference of each test result is little, and it is low to have cost, the advantage that the test duration is short.
Accompanying drawing explanation
Fig. 1 is the structural representation of the automatic contamination equipment that the embodiment of the present invention provides.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Pollution source for coating contaminated resistance, comprise following material: loess dirt, organic substance, inorganic carbon, adjuvant;
Described organic substance is selected from n-eicosane hydrocarbon, Heneicosane hydrocarbon, n-docosane hydrocarbon, n-tricosane hydrocarbon, n-tetracosane hydrocarbon, pentacosane hydrocarbon, n-hexacosane hydrocarbon, heptacosane hydrocarbon, positive octacosane hydrocarbon, positive nonacosane hydrocarbon or positive triacontane hydrocarbon;
Described adjuvant is selected from Stoddard solvent, isomery hexadecane hydrocarbon, struktol WB212 (a kind of specifications and models that German struktol company produces are the spreading agent of WB212) or hydrocarbon waxes solid.
Struktol WB212 is a kind of spreading agent, and WB212 is a kind of concrete specifications and models of product, and principal ingredient is for being combined in high molecular weight fatty acid ester emulsion on inorganic carrier.
Be added with organic substance in pollution source of the present invention, pollution source, close to air pollutants composition, make test final more accurate.
Further, the material of following mass percentage is comprised:
Loess dirt 70%-80%, organic substance 5%-15%, inorganic carbon 3%-15%, adjuvant 2%-10%.
Pollution source of the present invention are close with Atmospheric particulates composition, fundamentally guarantee to test the contaminated resistance that can reflect test specimen truely and accurately.
Preferably, loess dirt is Chinese loess Standard Reference Materials for Determination (GBW08305), soil constituent analytical standard material-Shaanxi Province's Luochuan Loess (GBW07454), soil constituent analytical standard material-loess (GBW07408) or atmospheric experiment dust standard model-loess dirt (meeting the regulation of GB 13268); Described inorganic carbon is colour carbon black or half reinforcement oven process gas-produced black.
In existing Atmospheric particulates, inorganic component comes from soil, and the principal ingredient of loess dirt of the present invention is very close with Atmospheric particulates inorganic component, and these loess dirt are standard substance simultaneously, ensure that the stable of pollution source composition.
See Fig. 1, one stains equipment automatically, comprises pollution source placing component 1, circulation member 2, pollutes room 3, control assembly 4;
Connect above pollution source placing component 1 and pollute room 3, below connects circulation member 2 by pipeline, and the end of circulation member 2 reaches and pollutes in room 3, and control assembly 4 is electrically connected with pollution room 3 with pollution source placing component 1, circulation member 2 respectively.
Preferably, pollution source placing component 1 comprises the housing 10 of inverted cone column, and the inside of housing 10 is provided with pollution source mounting table 11, and the below of pollution source mounting table 11 is provided with screen pack 12, the bottom of housing 10 is connected with ebullator 21 by pipeline, and the outside of housing 10 is provided with vibrating device 13.
Preferably, circulation member 2 comprises ebullator 21, air flow rate sensor 22 and distal opening 23, ebullator 21 connects pollution room 3 by pipeline, air flow rate sensor 22 is installed between ebullator 21 and distal opening 23, distal opening 23 is in circular cone column, and distal opening 23 reaches the top of polluting room 3.
Preferably, pollute room 3 and comprise the sample holding chamber 34 that inside is provided with opening, it is cylindrical that pollution room portion fills 3 profiles, sample holding chamber 34 is square, example platform 31 is provided with in sample holding chamber 34, example platform 31 is arranged on immediately below distal opening 23, is provided with heating arrangement 32 and temperature sensor 33 below example platform 31.
Preferably, control assembly 4 is electrically connected with ebullator 21, for the open and close of controlled circulation pump 21, control assembly 4 is electrically connected with air flow rate sensor 22, for monitoring the size of air mass flow, control assembly 4 is electrically connected with heating arrangement 32 and temperature sensor 33, for heating and the temperature of Quality control platform.
Adopt automatic contamination equipment of the present invention, the automatic contamination of sample can be realized, brushing amount is accurate and controlled, pollution source can be made can to become scattered about the surface of test specimen equably, avoid human factor on the impact of test findings, use heating arrangement that test specimen is heated to uniform temperature simultaneously, investigate the softening point of sample surfaces material more fully to the impact of sample stain resistance, so that more overall scientific ground reflects the contaminated resistance of sample.This equipment test Parameter adjustable, can according to the requirement of specific product, adjustment correlation parameter; In addition, this equipment is all sealed in equipment in whole process of the test, can not affect the health of environment and testing crew.
The present invention also provides a kind of coating stain resistant test method, comprises the steps:
1) pollution source are configured;
A) loess dirt is placed in the baking oven of 110 DEG C-120 DEG C, takes out after 12-48 hour;
B) organic substance is placed on the Water Tank with Temp.-controlled 10min-30min of 40 DEG C-60 DEG C;
C) inorganic carbon is added in adjuvant stir, obtain potpourri, and this potpourri and loess dirt are added in organic substance successively, be uniformly dispersed with the rotating speed of 400r/min-600r/min with dispersing apparatus; Obtain pollution source.
2) pollution source are positioned over pollution source mounting table, and sample is positioned over above example platform;
3) arrange the rotating speed of ebullator, the opening time of vibration and shut-in time, vibration frequency is 10-30Hz, and preferred 20Hz makes air velocity reach 1-5m/s, and keeps 40 minutes-2 hours;
4) close ebullator and vibrating device, open heating arrangement, make the temperature of example platform reach 30-50 DEG C, and keep 0.5-1h;
5) close heating arrangement, take out the sample after staiing, sample has stain automatically.
6) adopt flusher to rinse the sample after staiing, then sample is dried;
7) reflection coefficient of sample contamination front and back is tested, using the ratio percentage of front to the absolute value of reflection coefficient before and after contamination and contamination sample reflection coefficient as the parameter evaluating coating stain resistance test method.
Method of the present invention is adopted to have following advantage: 1. pollution source are close with Atmospheric particulates composition, ensure that the science of test; 2. can realize the automatic contamination of sample, pollution source evenly and controllably become scattered about sample surfaces, avoid testing crew on the impact of test; 3. the method take into account the mode that Atmospheric particulates stain body surface comprehensively, also considers the health to environment and experimenter simultaneously, scientific and reasonable; 4. this device parameter is adjustable, and automaticity is high.
Below by specific embodiment, the present invention is described further:
Embodiment 1
A kind of detection of white coating contaminated resistance:
Utilize automatic contamination equipment to stain sample, operation steps is as follows:
1). configuration pollution source;
Raw material is taken according to following proportioning:
Loess dirt 75%, n-tricosane 10%, colour carbon black 10%, Stoddard solvent 5%;
A, loess dirt is placed in the baking oven of 110 DEG C-120 DEG C, takes out after 12-48 hour;
B, organic substance is placed on the Water Tank with Temp.-controlled 10min-30min of 40 DEG C-60 DEG C;
C, colour carbon black added in Stoddard solvent stir, obtain potpourri, and this potpourri and loess dirt are added in organic substance successively, be uniformly dispersed with the rotating speed of 400r/min-600r/min with dispersing apparatus; Obtain pollution source.
2). the reflection coefficient of test sample, then pollution source are positioned over pollution source mounting table, sample is positioned over above example platform;
3). ON cycle pump and vibrating device, arrange rotating speed and the vibration frequency of ebullator, make air velocity reach 3m/s, and keep 1h;
4) after .1h, close ebullator and vibrating device, open heating arrangement, make the temperature of example platform reach 40 DEG C, and keep 0.5h;
5). close heating arrangement, take out the sample after staiing, sample has stain automatically.
After staiing, sample is placed in the flusher that GB/T 9780-2013 specify and rinses, the reflection coefficient of sample is afterwards stain in test; Calculate according to following formula:
In formula:
The decline rate of reflectance of X---coating;
A---the initial average reflection coefficient of coating;
The average reflection coefficient of B---coating after staining test.
Assay is carried out classification (see table 1), accordingly coating contaminated resistance is evaluated.
Table 1 coating contaminated resistance grading range
| Rank | 1 | 2 | 3 | 4 |
| Decline rate of reflectance scope | 0-5％ | 5％-10％ | 10％-15％ | More than 15% |
6) reflection coefficient before and after sample contamination is respectively 80,70, and sample stains back reflection coefficient rate of descent is as calculated 12.5%, and known according to table 1, this sample stain resistant grade is 3 grades.
Embodiment 2
Substantially identical with the method for testing of embodiment 1, difference is:
Raw material is taken according to following proportioning:
Loess dirt 70%, positive octacosane hydrocarbon 15%, half reinforcement oven process gas-produced black 5%, isomery hexadecane hydrocarbon 10%;
A, loess dirt is placed in the baking oven of 110 DEG C, takes out after 48 hours;
B, positive octacosane hydrocarbon is placed on the Water Tank with Temp.-controlled 30min of 40 DEG C;
C, half reinforcement oven process gas-produced black added in adjuvant stir, obtain potpourri, and this potpourri and loess dirt are added in organic substance successively, be uniformly dispersed with the rotating speed of 400r/min with dispersing apparatus; Obtain pollution source.
Air velocity in step 3 reaches 1m/s, and keeps 0.8h;
In step 4, the temperature of example platform reaches 50 DEG C.
Reflection coefficient in step 6 before and after sample contamination is respectively 85,75, and sample stains back reflection coefficient rate of descent is as calculated 11.8%, and known according to table 1, this sample stain resistant grade is 3 grades.
Embodiment 3
Substantially identical with the method for testing of embodiment 1, difference is:
Raw material is taken according to following proportioning:
Loess dirt 80%, n-eicosane 5%, colour carbon black 13%, struktol WB212 2%;
A, loess dirt is placed in the baking oven of 120 DEG C, takes out after 12 hours;
B, n-eicosane is placed on the Water Tank with Temp.-controlled 10min of 60 DEG C;
C, colour carbon black added in struktol WB212 stir, obtain potpourri, and this potpourri and loess dirt are added in organic substance successively, be uniformly dispersed with the rotating speed of 600r/min with dispersing apparatus; Obtain pollution source.
Air velocity in step 3 reaches 5m/s, and keeps 0.5h;
In step 4, the temperature of example platform reaches 30 DEG C.
Reflection coefficient in step 6 before and after sample contamination is respectively 80,75, and sample stains back reflection coefficient rate of descent is as calculated 6.3%, and known according to table 1, this sample stain resistant grade is 2 grades.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. pollution source for coating contaminated resistance, is characterized in that, comprise following material: loess dirt, organic substance, inorganic carbon, adjuvant;
Described organic substance is selected from n-eicosane hydrocarbon, Heneicosane hydrocarbon, n-docosane hydrocarbon, n-tricosane hydrocarbon, n-tetracosane hydrocarbon, pentacosane hydrocarbon, n-hexacosane hydrocarbon, heptacosane hydrocarbon, positive octacosane hydrocarbon, positive nonacosane hydrocarbon or positive triacontane hydrocarbon;
Described adjuvant be selected from Stoddard solvent, isomery hexadecane hydrocarbon, struktol WB212 (German struktol company produce a kind of specification be the spreading agent of WB212) or hydrocarbon waxes solid.
2. the pollution source of coating contaminated resistance according to claim 1, is characterized in that, comprise the material of following mass percentage:
Loess dirt 70%-80%, organic substance 5%-15%, inorganic carbon 3%-15%, adjuvant 2%-10%.
3. the pollution source of coating contaminated resistance according to claim 1 and 2, it is characterized in that, described loess dirt is Chinese loess Standard Reference Materials for Determination, soil constituent analytical standard material-Shaanxi Province's Luochuan Loess, soil constituent analytical standard material-loess or atmospheric experiment dust standard model-loess dirt; Described inorganic carbon is colour carbon black or half reinforcement oven process gas-produced black.
4. automatically stain an equipment, it is characterized in that, comprise pollution source placing component, circulation member, pollution room, control assembly;
Connect above described pollution source placing component and pollute room, below connects circulation member by pipeline, and the end of described circulation member reaches described pollution indoor, and described control assembly is electrically connected with pollution room with pollution source placing component, circulation member respectively.
5. automatic contamination equipment according to claim 4, it is characterized in that, described pollution source placing component comprises the housing of inverted cone column, the inside of described housing is provided with pollution source mounting table, the below of described pollution source mounting table is provided with screen pack, the bottom of described housing is connected with ebullator by pipeline, and the outside of described housing is provided with vibrating device.
6. automatic contamination equipment according to claim 5, it is characterized in that, described circulation member comprises ebullator, air flow rate sensor and distal opening, described ebullator connects pollution room by pipeline, described air flow rate sensor is installed between ebullator and distal opening, described distal opening is circular cone column, and described distal opening reaches the top of described pollution room.
7. automatic contamination equipment according to claim 6, it is characterized in that, described pollution room comprises the sample holding chamber that inside is provided with opening, example platform is provided with in described sample holding chamber, described example platform be arranged on described open-ended immediately below, be provided with heating arrangement and temperature sensor below described example platform.
8. automatic contamination equipment according to claim 7, it is characterized in that, described control assembly is electrically connected with ebullator, for the open and close of controlled circulation pump, described control assembly is electrically connected with air flow rate sensor, for monitoring the size of air mass flow, described control assembly is electrically connected with heating arrangement and temperature sensor, for heating and the temperature of Quality control platform.
9. a coating stain resistant test method, is characterized in that, comprises the steps:
1) pollution source are configured;
2) pollution source are positioned over pollution source mounting table, and sample is positioned over above example platform;
3) arrange the rotating speed of ebullator, the opening time of vibration and shut-in time, ON cycle pump and vibrating device make air velocity reach 1-5m/s, and keep 40 minutes-2 hours;
4) close ebullator and vibrating device, open heating arrangement, make the temperature of example platform reach 30-50 DEG C, and keep 0.5-1h;
5) close heating arrangement, take out the sample after staiing, sample has stain automatically.
6) adopt flusher to rinse the sample after staiing, then sample is dried;
7) reflection coefficient of sample contamination front and back is tested, using the ratio percentage of front to the absolute value of reflection coefficient before and after contamination and contamination sample reflection coefficient as the parameter evaluating coating stain resistance test method.
10. a kind of coating stain resistant test method according to claim 9, it is characterized in that, described configuration pollution source comprise the following steps:
1) loess dirt is placed in the baking oven of 110 DEG C-120 DEG C, takes out after 12-48 hour;
2) organic substance is placed on the Water Tank with Temp.-controlled 10min-30min of 40 DEG C-60 DEG C;
3) inorganic carbon is added in adjuvant stir, obtain potpourri, and this potpourri and loess dirt are added in organic substance successively, be uniformly dispersed with the rotating speed of 400r/min-600r/min with dispersing apparatus; Obtain pollution source.
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| CN106353455A (en) * | 2016-08-31 | 2017-01-25 | 天津天涂豪邦涂料有限公司 | Device for testing stain resistance of synthetic resin emulsion-containing interior and exterior wall coating |
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| CN109374465A (en) * | 2018-11-23 | 2019-02-22 | 东莞南玻太阳能玻璃有限公司 | A kind of quick detection AR glass surface is stained with the test device and test method of grey performance |
| CN112986120A (en) * | 2021-03-19 | 2021-06-18 | 北京三棵树新材料科技有限公司 | Device for testing stain resistance of exterior wall coating and using method thereof |
| CN113631907A (en) * | 2019-03-01 | 2021-11-09 | 科慕埃弗西有限公司 | Method and apparatus for quantifying solid residues on a substrate |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106353455A (en) * | 2016-08-31 | 2017-01-25 | 天津天涂豪邦涂料有限公司 | Device for testing stain resistance of synthetic resin emulsion-containing interior and exterior wall coating |
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| CN109374465A (en) * | 2018-11-23 | 2019-02-22 | 东莞南玻太阳能玻璃有限公司 | A kind of quick detection AR glass surface is stained with the test device and test method of grey performance |
| CN109374465B (en) * | 2018-11-23 | 2023-11-21 | 东莞南玻太阳能玻璃有限公司 | Test device and test method for rapidly detecting AR glass surface dust-sticking performance |
| CN113631907A (en) * | 2019-03-01 | 2021-11-09 | 科慕埃弗西有限公司 | Method and apparatus for quantifying solid residues on a substrate |
| CN112986120A (en) * | 2021-03-19 | 2021-06-18 | 北京三棵树新材料科技有限公司 | Device for testing stain resistance of exterior wall coating and using method thereof |
| CN112986120B (en) * | 2021-03-19 | 2023-04-18 | 北京三棵树新材料科技有限公司 | Device for testing stain resistance of exterior wall coating and using method thereof |
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| CN104458395B (en) | 2017-02-22 |
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