CN115290549A - Turntable type natural environment accelerated light aging test device and test method - Google Patents
Turntable type natural environment accelerated light aging test device and test method Download PDFInfo
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Abstract
The invention provides a turntable type natural environment accelerated photo-aging test device and a test method, wherein the test device comprises a sun tracking mechanism, a power supply system and a temperature monitoring system, wherein an ultraviolet light reflecting system and a sample target plate assembly are arranged on a bearing top frame of the sun tracking mechanism, and the ultraviolet light reflecting system comprises a plurality of mutually independent reflecting mirror assemblies which are arranged at intervals; the test method comprises the following steps: controlling a sun tracking mechanism to rotate according to the sun azimuth angle, and controlling a reflector of a reflector component to rotate in a pitching mode according to the sun altitude angle to ensure that reflected light irradiates a sample tested area; and when the monitored temperature on the sample exceeds a preset upper temperature limit value, controlling one or more reflectors to turn to a horizontal state/a vertical state. The invention can realize the random adjustment of accelerated aging rate and realize the photo-aging test of constant radiation intensity.
Description
Technical Field
The invention belongs to the technical field of natural environment accelerated tests, and particularly relates to a turntable type natural environment accelerated photo-aging test device and a test method.
Background
In the long-term use process of polymer materials such as coatings, plastics and the like which are irradiated by sunlight, phenomena of color change, chalking, bubbling, cracking, falling and the like often occur, and the characteristics of mechanical property, protective property, appearance performance and the like of products are seriously influenced. Therefore, in the process of developing materials such as paints and plastics, it is necessary to provide evaluation basis by simulating natural use conditions, namely, performing a photoaging test to evaluate the materials. In order to quickly evaluate the properties of materials, artificial accelerated photoaging is often used in performing photoaging tests of new materials.
At present, the photoaging accelerated test method mainly comprises two major categories, namely a carbon arc lamp irradiation method, a fluorescent ultraviolet lamp irradiation method, a xenon arc lamp irradiation method, a metal halogen lamp irradiation method and other laboratory people accelerated test methods and a natural light focusing irradiation method using sunlight. The natural light focusing irradiation method is a natural accelerated photoaging test method, and mainly relates to a natural accelerated photoaging test method for increasing the solar irradiation amount of the exposed surface of a test sample during a test period by using a sun tracking light-gathering device. For example, the high-polymer material high-accelerated aging test device disclosed in the prior document CN113155715B includes an ultraviolet light reflection system, a sample temperature control system, a sun tracking system, and a multi-environment factor coordination control system; the ultraviolet light reflection system is mainly characterized in that the main structure of the ultraviolet light reflection system is a spherical concave surface and mainly comprises a concave surface frame and a fixing frame for fixing the concave surface frame, and a plurality of reflection mirrors are arranged on the concave surface frame; the solar tracking system comprises a vertical rotating mechanism, a horizontal rotating mechanism and a base, wherein the horizontal rotating mechanism is arranged on the base, the vertical rotating mechanism is connected with the ultraviolet light reflecting system, and a reflecting surface of the ultraviolet light reflecting system is always perpendicular to direct sunlight through the vertical rotating mechanism and the horizontal rotating mechanism. In addition, the american atlas weathering test group developed a new outdoor accelerated test equipment, ultraviolet accelerated climate system, which utilized fresnel reflectors to focus the ultraviolet part of natural light, and a sun tracking system to ensure that the ultraviolet light is always reflected and focused on the sample, and the focused intensity is 50-100 times that of the natural light.
However, the aforementioned accelerated aging test apparatus can only be applied to a standard sample or a flat plate sample with a small weight to perform an accelerated photo aging test, and cannot perform an accelerated photo aging test on a polyhedral structural component, even a large (generally not less than 100 kg) sample with a large weight. More importantly, the major technical difficulties faced in the accelerated photoaging test carried out by the existing accelerated photoaging test device are as follows: the accelerated photoaging test can not be stably and effectively carried out on arc surface samples and columnar samples.
Disclosure of Invention
The invention aims to provide a turntable type natural environment accelerated light aging test device and a test method aiming at the problems in the background art.
The purpose of the invention is realized by adopting the following technical scheme.
The utility model provides a revolving stage formula natural environment is light aging test device with higher speed, includes sun tracking mechanism, power supply system, temperature monitoring system to and the ultraviolet reflection system and the sample target board subassembly that set up on sun tracking mechanism's the roof-rack that bears, its characterized in that: the ultraviolet light reflection system comprises a plurality of mutually independent and spaced reflection mirror assemblies, each reflection mirror assembly comprises a rotary support, a reflection mirror support plate is installed on a top plate of the rotary support, the reflection mirror support plate is connected with a reflection mirror, the reflection mirror can be turned to a proper angle in a pitching mode, and the mirror surfaces of partial reflection mirrors or all the reflection mirrors can jointly form a reflection spherical surface for reflecting ultraviolet light to a tested area of a sample target plate.
In order to facilitate accurate and rapid adjustment of the irradiation temperature of the sample test area, the mirror can be turned to a horizontal state and/or a vertical state. The mirror assembly is mounted on a gimbal mechanism (e.g., a gimballed head or a three-dimensional gimbal) to facilitate adjustment of the tilt angle of the mirror on the mirror assembly.
Preferably, the top of the reflector support plate is hinged to the back of the reflector through a movable rod, the back of the reflector is further connected with the top plate through a telescopic device, and the reflector is adaptively tilted along with the action of the telescopic device when the telescopic device is extended or shortened.
As a second preferred scheme, a motor arranged transversely is arranged on the reflector support plate, an output shaft of the motor is connected with a movable rod, the other end of the movable rod is fixedly connected with the back of the reflector, and the back of the reflector is also connected with a top plate through a telescopic rod; when the motor rotates, the movable rod and the reflector are driven to synchronously tilt.
Further, the mirror assemblies comprise a plurality of rows of mirror assemblies arranged in an array, the mirrors of the same row of mirror assemblies are arranged at the same height, the mirror assemblies of different rows are arranged in a gradient manner, and the mirrors in the rear row are higher than the mirrors in the front row.
Further, the sample target plate assembly comprises a stand column, a sample is mounted at the top of the stand column, the power supply system adopts a solar power supply system, a solar panel of the solar power supply system is located between the sample target plate assembly and the ultraviolet light reflection system, and the height point of the solar panel is lower than all ultraviolet light reflection paths.
In the present invention, the sun tracking mechanism, the temperature monitoring system, and the driving system of the mirror assembly are respectively connected to a controller, the controller includes a memory, a processor, and a program stored in the memory and operable on the processor, and the processor is capable of at least implementing the following steps/functions when executing the program:
reading satellite time service time, and calculating a real-time solar azimuth angle and a real-time solar altitude angle according to set longitude and latitude data;
controlling the sun tracking mechanism to rotate according to the sun azimuth angle to ensure that the bearing top frame always rotates along with the sun azimuth; controlling a reflector of a reflector component to rotate in a pitching mode according to the solar altitude angle, and ensuring that the reflected light of the reflector always irradiates a tested area of a sample;
controlling the start and stop of a blast cooling fan arranged at the target plate, and carrying out air cooling on the sample in the test process;
controlling the start and stop of a spray water pump of the device, spraying the sample according to the test requirements in the test process, and strengthening the comprehensive action of dry-wet alternation and photoaging;
and reading data fed back by the solar ultraviolet radiation sensor and the sample temperature sensor at the sample target plate, and adjusting and controlling the test state according to the test parameters.
A test method adopting the turntable type natural environment accelerated light aging test device comprises the following steps:
step 1, installing a sample;
and 6, repeatedly executing the step 4 and the step 5 to ensure that the solar ultraviolet radiation intensity or temperature on the sample is always in a preset interval.
A test method adopting the turntable type natural environment accelerated light aging test device comprises the following steps:
step 11, mounting a columnar sample;
step 13, controlling the sun tracking mechanism to rotate according to the sun azimuth angle in real time, and simultaneously: controlling the reflectors of the reflector assembly in the first row to rotate in a pitching mode according to the high sun angle until the reflected light of all the reflectors in the first row irradiates a first tested area of the columnar sample; controlling the mirrors of the mirror assemblies in the second row to perform pitching rotation according to the solar elevation angle until the reflected light of all the mirrors in the second row irradiates on a second tested area … … of the columnar sample, and controlling the mirrors of the mirror assemblies in the Nth (N =3, 4, 5 …) row to perform pitching rotation according to the solar elevation angle until the reflected light of all the mirrors in the Nth row irradiates on the Nth tested area of the columnar sample;
step 14, when the temperature of a certain tested area on the columnar sample is monitored to exceed a preset upper temperature limit value, controlling one or more reflectors corresponding to the tested area to turn to a horizontal state/a vertical state; when the temperature of the tested area on the sample is monitored to be lower than the lower limit value of the preset temperature, controlling one or more reflectors of the tested area to turn over to an effective reflection state; and repeatedly executing the step to ensure that the temperature of all tested areas on the columnar sample is always in a preset temperature interval.
In order to stably and effectively carry out the accelerated aging test on the heavy columnar sample, the columnar sample is installed by adopting the following steps:
step 110, firstly, a cylindrical barrel seat (namely, a hollow upright column) is installed on a bearing top frame, then a cylindrical support body is inserted into the cylindrical barrel seat, at the moment, the bottom wall of a top flat plate of the cylindrical support body is just attached to the top edge of the cylindrical barrel seat, and the bottom end of the cylindrical support body is just attached to the bottom wall of the cylindrical barrel seat;
step 111, installing and adjusting a tightly-abutting bolt on the side wall of the cylindrical barrel seat to enable the cylindrical support body to be in a vertical state;
112, pouring sand grains into the cylindrical barrel seat from the through hole in the top plate until the cavity of the cylindrical barrel seat is filled with the sand grains;
and 113, fixing the bottom plate of the columnar sample on the top plate of the columnar support body.
Further, a plurality of rolling supporting pieces are arranged below the bearing top frame, an annular structure formed by all the rolling supporting pieces is located under the motion trail of the columnar sample, each rolling supporting piece comprises a vertical rod installed on a concrete foundation, a bearing is horizontally arranged at the top of the vertical rod, and the top end of the bearing is always in contact with the bottom wall of the bearing top frame when the sun tracking mechanism operates.
Has the advantages that:
1. by adopting the scheme of the invention, not only can the high-efficiency strengthening of the solar radiation light effect be realized, but also the arbitrary regulation of the accelerated aging rate of 1-100 times can be realized, and the light aging test of constant radiation intensity can be realized;
2. the test device has low gravity center, wind resistance capability of resisting 10-grade wind, no carbon emission, is particularly suitable for being installed in remote extreme climate areas, and is very convenient to install samples;
3. the irradiation temperature of the tested area of the sample can be accurately and rapidly adjusted, and the irradiation adjustment of any tested area on the sample can be completed within three seconds;
4. the accelerated photo-aging test device is not only suitable for carrying out accelerated photo-aging tests on small samples, but also can carry out accelerated photo-aging tests on heavy and large samples, and can carry out accelerated photo-aging tests on arc-surface samples and column-shaped samples stably and effectively.
Drawings
FIG. 1 is a schematic view of a turntable-type natural environment accelerated photo-aging test apparatus in example 1;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a front view of FIG. 1;
FIG. 4 is a side view of FIG. 1;
FIG. 5 is a first schematic view of a mirror assembly according to embodiment 1;
fig. 6 is a second schematic view of the mirror assembly of embodiment 1;
FIG. 7 is a schematic view of a turntable-type natural environment accelerated photo-aging test apparatus in example 2;
FIG. 8 is a side view of FIG. 7;
FIG. 9 is a schematic view showing the external structure of a sample target plate assembly in example 2;
FIG. 10 is a schematic sectional view of the sample target plate assembly in example 2;
fig. 11 is a schematic view of a mirror assembly in embodiment 3.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments, which are described herein for purposes of illustration only and are not intended to be limiting.
Example 1
As shown in fig. 1 to fig. 3, a turntable type natural environment accelerated photo-aging test apparatus includes a sun tracking mechanism, a power supply system, a temperature monitoring system, and an ultraviolet light reflection system and a sample target plate assembly 1 disposed on a bearing top frame 3 of the sun tracking mechanism. The operation principle and mode of the sun tracking mechanism are the prior art, and are not described in detail herein, specifically, a sun tracking system in document CN113155715B may be adopted, and the revolving ring 5 of the sun tracking mechanism is fixedly connected to the carrying top frame 3.
In the present embodiment, the ultraviolet light reflection system includes a plurality of mirror assemblies 2 arranged independently and at intervals, each mirror assembly 2 includes a rotating support 20, a mirror support plate 21 is mounted on a top plate 24 of the rotating support 20, the mirror support plate 21 is connected to a mirror 23, the mirror 23 can be tilted to a proper angle, and the mirror surfaces of the partial mirrors 23 (here, the partial mirrors 23 are in an effective reflection state, for example, when X of the total 100 mirrors are out of the effective reflection state, the X mirrors are referred to as partial mirrors) or all the mirrors 23 (here, all the mirrors 23 are in the effective reflection state) can jointly form a reflection spherical surface for reflecting ultraviolet light to the tested area of the sample target plate 10.
The rotating support 20 directly acts to drive the reflector 23 to rotate to a proper angle, and the final function is to match with other components to realize accurate and rapid adjustment of the irradiation temperature of the sample test area. The rotating support 20 can adopt an existing rotating structure, and can also adopt a worm and gear rotating structure, for example: the rotating support 20 comprises a bottom plate installed on the bearing top frame 3, a worm and gear box 28 is arranged on the bottom plate, a top plate 24 is arranged above the worm and gear box 28, a motor 29 (servo motor) is installed on the upper wall of the top plate 24, a worm and gear transmission mechanism is arranged in the worm and gear box 28 and connected with the output end of the motor 29, the top plate 24 is connected with a rotary gear ring of the worm and gear transmission mechanism, and when the motor runs, the worm and gear transmission mechanism is driven to run, so that the rotary gear ring and the top plate 24 are driven to rotate synchronously.
In the present embodiment, each mirror 23 can be turned to a horizontal state and a vertical state. Specifically, the method comprises the following steps: a motor 26 transversely arranged is arranged on the reflector support plate 21, an output shaft of the motor 26 is connected with the movable rod 22, the other end of the movable rod 22 is fixedly connected with the back of the reflector 23, and the back of the reflector 23 is also connected with the top plate 24 through a telescopic rod 27; when the motor 26 rotates, the movable rod 22 and the reflecting mirror 23 are driven to synchronously tilt (when the motor 26 rotates clockwise to a limit position, the reflecting mirror 23 is driven to be turned to a vertical state, and when the motor 26 rotates counterclockwise to a limit position, the reflecting mirror 23 is driven to be turned to a horizontal state).
In this embodiment, the mirror assembly 2 includes a plurality of rows of mirror assemblies 2 arranged in an array, the mirrors 23 of the same row of mirror assemblies 2 are arranged at the same height, the mirror assemblies 2 of different rows are arranged in a gradient manner, and the mirrors 23 of the next row are higher than the mirrors 23 of the previous row, which schematically shows seven rows of mirrors 23.
In this embodiment, the sample target plate assembly 1 includes a column 10, a sample 11 is installed on the top of the column 10, the power supply system adopts a solar power supply system, a solar panel 4 of the solar power supply system is located between the sample target plate assembly 1 and the ultraviolet light reflection system, and the height point of the solar panel 4 is lower than all ultraviolet light reflection paths.
In this embodiment, the sun tracking mechanism, the temperature monitoring system, and the driving system of the mirror assembly 2 are respectively connected to the controller, the controller includes a memory, a processor, and a program stored in the memory and capable of running on the processor, and the processor implements the following steps/functions when executing the program:
reading satellite time service time, and calculating a real-time solar azimuth angle and a real-time solar altitude angle according to set longitude and latitude data;
controlling the sun tracking mechanism to rotate according to the sun azimuth angle in real time, and ensuring that the bearing top frame 3 always rotates along with the sun azimuth; controlling a reflector 23 of the reflector assembly 2 to rotate in a pitching manner according to the solar altitude in real time, and ensuring that the reflected light of the reflector 23 irradiates a tested area of a sample;
controlling the start and stop of a blast cooling fan arranged at the sample target plate 10, and carrying out air cooling on the sample in the test process;
the start and stop of a spray water pump of the device are controlled, samples are sprayed according to test requirements in the test process, and the comprehensive effect of dry-wet alternation and photoaging is strengthened;
and reading data fed back by the solar ultraviolet radiation sensor and the sample temperature sensor at the sample target plate, and adjusting and controlling the test state according to the test parameters.
The control program is written by those skilled in the art or those skilled in the computer field, and the core of the control program is to ensure that any one of the reflectors 23 can reflect the ultraviolet light to the tested area of the sample target plate 10 when in an effective reflection state; any one of the reflectors 23 can perform pitching and horizontal rotation according to a target angle and orientation, the minimum angle of single horizontal rotation can be set to be 1 °, the minimum angle of single pitching rotation can be set to be 2 °, the maximum angle of single horizontal rotation can be set to be 15 °, the maximum angle of single pitching rotation can be set to be 45 °, and the reflected light of the reflector 23 is ensured to irradiate the tested area of the sample 11.
By adopting the test method of the turntable type natural environment accelerated photoaging test device in the embodiment, an accelerated photoaging test is carried out on a small sample, and the test method comprises the following steps:
step 1, installing a sample 11, and installing the sample 11 at the top of a stand column 10;
and 6, repeatedly executing the step 4 and the step 5 to ensure that the temperature on the sample 11 is always in a preset temperature range.
In step 4, if too fast a temperature rise on the sample 11 is monitored, one or more mirrors 23 can be controlled to always flip to a horizontal or vertical state until the temperature rise rate is within a reasonable range.
By adopting the scheme in the embodiment, the high-efficiency strengthening of the solar radiation light effect can be realized, the arbitrary regulation of the accelerated aging rate of 1-100 times can be realized, and the light aging test of constant radiation intensity can be realized; the temperature rise can be accurately controlled to be 1 ℃/5s, and the temperature on the sample 11 can be accurately stabilized within the range of +/-3 ℃.
Example 2
A revolving stage formula natural environment accelerated light aging test device, refer to example 1, its main difference with example 1 lies in: the upright column 10 adopts a cylindrical barrel seat 31 (an upright column with a hollow structure), a discharge short pipe with a valve is arranged at the bottom of the cylindrical barrel seat 31, the cylindrical barrel seat 31 is provided with a cylindrical support body 30 which can be inserted into the cylindrical barrel seat 31, the top of the cylindrical support body 30 is connected with a top plate 34, a sand filling hole 38 is arranged on the top plate 34, after the cylindrical support body 30 is inserted into the cylindrical barrel seat 31, the bottom wall of the top plate 34 of the cylindrical support body 30 is just attached to the top edge of the cylindrical barrel seat 31, and the bottom end of the cylindrical support body 30 is just attached to the bottom wall of the cylindrical barrel seat 31; the side wall of the cylindrical barrel seat 31 is provided with a plurality of screw holes which are arranged in the radial direction, and a fastening bolt 32 is matched in each screw hole; a plurality of rolling supporting pieces 35 are arranged below the bearing top frame 3, an annular structure formed by all the rolling supporting pieces 35 is located under the movement track of the columnar sample 12, the rolling supporting pieces 35 comprise vertical rods arranged on a concrete foundation, bearings 36 are arranged at the tops of the vertical rods, the axes of all the bearings 36 are intersected with the circle center corresponding to the movement track of the columnar sample 12, and the top ends of the bearings 36 are always in contact with the bottom wall of the bearing top frame 3 when the sun tracking mechanism operates.
By adopting the test method of the turntable type natural environment accelerated photoaging test device in the embodiment, an accelerated photoaging test is carried out on a large metal columnar sample 12 coating (the cross section of which is rectangular, the weight of which is 200kg, and the height of which is 1 m), and the method comprises the following steps:
step 11, installing a columnar sample 12, wherein each side wall of the columnar sample 12 is sequentially divided into a first tested area and a second tested area … Nth tested area from bottom to top;
step 110, selecting a cylindrical barrel seat 31 and a cylindrical support body 30 (the cross-sectional area of the cylindrical support body 30 is larger than that of the cylindrical sample 12) with the lengths of 1.2 meters, firstly installing the cylindrical barrel seat 31 on a bearing top frame 3, and then inserting the cylindrical support body 30 into the cylindrical barrel seat 31, wherein the bottom wall of a top flat plate 34 of the cylindrical support body 30 just leans against the top edge of the cylindrical barrel seat 31, and the bottom end of the cylindrical support body 30 just leans against the bottom wall of the cylindrical barrel seat 31;
step 111, installing and adjusting the abutting bolts 32 on the side wall of the cylindrical barrel seat 31 to enable the cylindrical support body 30 to be in a vertical state;
112, pouring sand grains 37 (steel sand can also be adopted) into the cylindrical barrel seat 31 from the through holes on the top plate 34 until the sand grains 37 fill the cavity of the cylindrical barrel seat 31;
step 113, fixing the bottom plate 33 of the columnar sample 12 on the top plate 34 of the columnar support 30;
step 13, when the temperature of a certain tested area on the columnar sample 12 is monitored to exceed a preset upper temperature limit value, controlling one or more reflectors 23 corresponding to the tested area to turn over to a horizontal state/a vertical state; when the temperature of the tested area on the columnar sample 12 is monitored to be lower than the lower limit value of the preset temperature, controlling one or more reflectors 23 of the tested area to turn over to an effective reflection state; the step is repeatedly executed to ensure that the temperatures of all tested areas on the columnar sample 12 are always in a preset temperature interval;
the foregoing steps 11-13 only describe the accelerated photoaging test of one of the side walls of the columnar sample 12, and if the test needs to be performed on the other side walls, the step 11-13 is performed after the columnar sample 12 is rotated by 90 ° each time;
step 14, after the test is finished, taking down the columnar sample 12, and then opening a valve on the discharge short pipe to discharge the sand grains 37.
By adopting the scheme in the embodiment, the method is particularly suitable for stably and effectively carrying out the accelerated photo-aging test on the heavy columnar sample, can realize the high-efficiency strengthening of the solar radiation optical effect, can realize the arbitrary regulation of the accelerated aging rate of 1-30 times, and can also realize the photo-aging test with constant radiation intensity; the testing temperature of the columnar sample 12 can be accurately stabilized within the range of +/-3 ℃; the irradiation intensity of the tested area of the sample can be accurately and rapidly adjusted, and the irradiation adjustment of any tested area on the columnar sample can be completed within three seconds. According to the scheme in the embodiment, the single-arm structure of the columnar sample is ingeniously changed into an insertion structure (similar to a pen inserted into a pen container), the columnar sample is fixed by means of matching of abutting bolts (rigidity) and sand grains 37 (flexibility), the sample can be prevented from shaking, the sample can be prevented from deviating, and meanwhile the sample can be rapidly installed and detached.
Example 3
A revolving stage formula natural environment accelerated light aging test device, refer to example 1, its main difference with example 1 lies in: the top of the reflector support plate 21 is hinged with the back of the reflector 23 through a movable rod 22, the back of the reflector 23 is also connected with a top plate 24 through a telescopic device 25, and when the telescopic device 25 extends or shortens, the reflector 23 is adaptive to pitch and turn along with the action of the telescopic device 25.
By adopting the scheme of the invention, not only can the high-efficiency strengthening of the solar radiation light effect be realized, but also the arbitrary regulation of the accelerated aging rate of 1-100 times can be realized, and the light aging test of constant radiation intensity can be realized; the test device has low gravity center, wind resistance capability of resisting 10-grade wind, no carbon emission, is particularly suitable for being installed in remote extreme climate areas, and is very convenient for installing samples; the irradiation temperature of the tested area of the sample can be accurately and rapidly adjusted, and the irradiation adjustment of any tested area on the sample can be completed within three seconds; the accelerated photo-aging test device is not only suitable for carrying out accelerated photo-aging tests on small samples, but also can carry out accelerated photo-aging tests on heavy and large samples, and can stably and effectively carry out accelerated aging tests on arc-surface samples and columnar samples.
Claims (10)
1. The utility model provides a revolving stage formula natural environment is light aging test device with higher speed, includes sun tracking mechanism, power supply system, temperature monitoring system to and ultraviolet reflection system and sample target board subassembly (1) that set up on sun tracking mechanism's the roof-rack (3) that bear, its characterized in that: the ultraviolet reflection system comprises a plurality of mutually independent and spaced reflector assemblies (2), each reflector assembly (2) comprises a rotary support (20), a reflector support plate (21) is installed on a top plate (24) of the rotary support (20), the reflector support plate (21) is connected with a reflector (23), the reflector (23) can be turned to a proper angle in a pitching mode, and the mirror surfaces of part of the reflectors (23) or all the reflectors (23) can jointly form a reflection spherical surface for reflecting ultraviolet light to a tested area of a sample target plate (10).
2. The turret-type natural environment accelerated photoaging test device of claim 1, wherein: the mirror (23) can be tilted into a horizontal position and/or into a vertical position.
3. The turret-type natural environment accelerated photoaging test device of claim 2, wherein: the top of the reflector supporting plate (21) is hinged to the back of the reflector (23) through a movable rod (22), the back of the reflector (23) is further connected with a top plate (24) through a telescopic device (25), and when the telescopic device (25) extends or shortens, the reflector (23) performs adaptive pitching overturning along with the action of the telescopic device (25).
4. The turret-type natural environment accelerated photoaging test device of claim 2, wherein: a motor (26) which is transversely arranged is arranged on the reflector support plate (21), an output shaft of the motor (26) is connected with a movable rod (22), the other end of the movable rod (22) is fixedly connected with the back surface of the reflector (23), and the back surface of the reflector (23) is also connected with a top plate (24) through a telescopic rod (27); when the motor (26) rotates, the movable rod (22) and the reflecting mirror (23) are driven to synchronously tilt.
5. A turntable type natural environment accelerated photoaging test device according to any one of claims 1 to 4, wherein: the reflector assembly (2) comprises a plurality of rows of reflector assemblies (2) which are arranged in an array, the reflectors (23) of the same row of reflector assemblies (2) are arranged in the same height, the reflector assemblies (2) of different rows are arranged in a gradient mode, and the reflectors (23) of the rear rows are higher than the reflectors (23) of the front rows.
6. The turret-type natural environment accelerated photoaging test device of claim 5, wherein: sample target board subassembly (1) includes stand (10), stand (10) top installation sample (11), power supply system adopts solar power supply system, solar panel (4) of solar power supply system are located sample target board subassembly (1) with between the ultraviolet reflection system, and solar panel (4) high point is less than all ultraviolet reflection routes.
7. The turret-type natural environment accelerated photoaging test device of claim 6, wherein: the sun tracking mechanism, the temperature monitoring system and the driving system of the reflector component (2) are respectively connected with a controller, the controller comprises a memory, a processor and a program stored on the memory and capable of running on the processor, and the processor realizes the following steps/functions when executing the program:
reading satellite time service time, and calculating a real-time solar azimuth angle and a real-time solar altitude angle according to set longitude and latitude data;
controlling the sun tracking mechanism to rotate according to the sun azimuth angle to ensure that the bearing top frame always rotates along with the sun azimuth; controlling a reflector of a reflector component to rotate in a pitching mode according to the solar altitude angle, and ensuring that the reflected light of the reflector always irradiates a tested area of a sample;
controlling the start and stop of a blast cooling fan arranged at the target plate, and carrying out air cooling on the sample in the test process;
controlling the start and stop of a spray water pump of the device, spraying the sample according to the test requirements in the test process, and strengthening the comprehensive action of dry-wet alternation and photoaging;
and reading data fed back by the solar ultraviolet radiation sensor and the sample temperature sensor at the sample target plate, and adjusting and controlling the test state according to the test parameters.
8. A testing method of the turntable type natural environment accelerated photo-aging testing device according to claim 7, characterized by comprising the steps of:
step 1, installing a sample (11);
step 2, adjusting the reflecting mirrors (23) of all the reflecting mirror assemblies (2) to a proper inclination angle until the reflected light of all the reflecting mirrors (23) can irradiate the tested area of the sample;
step 3, controlling the sun tracking mechanism to rotate according to the sun azimuth angle to ensure that the bearing top frame (3) always rotates along with the sun azimuth; controlling a reflector (23) of a reflector component (2) to rotate in a pitching mode according to the solar altitude angle, and ensuring that the reflected light of the reflector (23) irradiates a tested area of a sample;
step 4, when the temperature of the sample (11) exceeds a preset upper temperature limit value, controlling one or more reflectors (23) to turn over to a horizontal state or a vertical state;
step 5, when the temperature on the sample (11) is monitored to be lower than the preset temperature lower limit value, controlling one or more reflectors (23) to turn over to the state of the reflectors (23) in the step 2;
and 6, repeatedly executing the step 4 and the step 5 to ensure that the temperature on the sample (11) is always in a preset temperature interval.
9. A testing method of the turntable type natural environment accelerated photo-aging testing device according to claim 7, characterized by comprising the steps of:
step 11, installing a columnar sample (12);
step 12, adjusting the reflecting mirrors (23) of all the reflecting mirror assemblies (2) to a proper inclination angle until the reflected light of all the reflecting mirrors (23) can irradiate the tested area of the sample;
step 13, controlling the sun tracking mechanism to rotate according to the sun azimuth angle in real time, and simultaneously: controlling the reflectors (23) of the reflector assembly (2) in the first row to rotate in a pitching mode according to the sun height angle until the reflected light of all the reflectors (23) in the first row irradiates a first tested area of the columnar sample (12); controlling the mirrors (23) of the second row of mirror assemblies (2) to rotate in a pitching manner according to the solar altitude angle until the reflected light of all the mirrors (23) of the second row irradiates the second tested area … … of the columnar sample (12), and controlling the mirrors (23) of the N (N =3, 4, 5 …) of the N-th row of mirror assemblies (2) to rotate in a pitching manner according to the solar altitude angle until the reflected light of all the mirrors (23) of the N-th row irradiates the N-th tested area of the columnar sample (12);
step 14, when the temperature of a certain tested area on the columnar sample (12) is monitored to exceed a preset upper temperature limit value, controlling one or more reflectors (23) corresponding to the tested area to turn over to a horizontal state or a vertical state; when the temperature of the tested area on the sample (11) is monitored to be lower than the lower limit value of the preset temperature, controlling one or more reflectors (23) of the tested area to turn to an effective reflection state; the step is repeatedly executed, and the temperature of all tested areas on the columnar sample (12) is ensured to be always in a preset temperature interval.
10. Test method according to claim 9, characterized in that the cylindrical sample (12) is mounted by the following steps:
step 110, firstly, installing the cylindrical barrel seat (31) on the bearing top frame (3), then inserting the cylindrical support body (30) into the cylindrical barrel seat (31), wherein the bottom wall of a top flat plate (34) of the cylindrical support body (30) is just attached to the top edge of the cylindrical barrel seat (31), and the bottom end of the cylindrical support body (30) is just attached to the bottom wall of the cylindrical barrel seat (31);
step 111, installing and adjusting a tightly-abutting bolt (32) on the side wall of the cylindrical barrel seat (31) to enable the cylindrical support body (30) to be in a vertical state;
112, filling sand grains into the cylindrical barrel seat (31) from the through hole on the top plate (34) until the sand grains fill the cavity of the cylindrical barrel seat (31);
and 113, fixing the bottom plate (33) of the columnar sample (12) on the top plate (34) of the columnar support body (30).
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| CN202211036387.7A CN115290549A (en) | 2022-08-28 | 2022-08-28 | Turntable type natural environment accelerated light aging test device and test method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116399791A (en) * | 2023-03-09 | 2023-07-07 | 滨州市检验检测中心(滨州市纺织纤维检验所、滨州市厨具产品质量检验中心) | Device for inspecting sun-proof effect of textile fiber fabric |
| CN117030585A (en) * | 2023-08-08 | 2023-11-10 | 重庆阿泰可科技股份有限公司 | Accelerated aging test device based on mirror system and mirror calibration method thereof |
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2022
- 2022-08-28 CN CN202211036387.7A patent/CN115290549A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116399791A (en) * | 2023-03-09 | 2023-07-07 | 滨州市检验检测中心(滨州市纺织纤维检验所、滨州市厨具产品质量检验中心) | Device for inspecting sun-proof effect of textile fiber fabric |
| CN117030585A (en) * | 2023-08-08 | 2023-11-10 | 重庆阿泰可科技股份有限公司 | Accelerated aging test device based on mirror system and mirror calibration method thereof |
| CN117030585B (en) * | 2023-08-08 | 2024-05-10 | 重庆阿泰可科技股份有限公司 | Accelerated aging test device based on mirror system and mirror calibration method thereof |
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