CN113552002A - Flexible glass bending strength test system - Google Patents
Flexible glass bending strength test system Download PDFInfo
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- CN113552002A CN113552002A CN202110667947.8A CN202110667947A CN113552002A CN 113552002 A CN113552002 A CN 113552002A CN 202110667947 A CN202110667947 A CN 202110667947A CN 113552002 A CN113552002 A CN 113552002A
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- 239000011521 glass Substances 0.000 title claims abstract description 93
- 238000012360 testing method Methods 0.000 title claims abstract description 54
- 238000005452 bending Methods 0.000 title claims abstract description 38
- 238000003825 pressing Methods 0.000 claims abstract description 97
- 238000001514 detection method Methods 0.000 claims description 35
- 238000000034 method Methods 0.000 description 14
- 238000005259 measurement Methods 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 239000005357 flat glass Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000013001 point bending Methods 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 229910052681 coesite Inorganic materials 0.000 description 3
- 229910052593 corundum Inorganic materials 0.000 description 3
- 229910052906 cristobalite Inorganic materials 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 229910052682 stishovite Inorganic materials 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910052905 tridymite Inorganic materials 0.000 description 3
- 229910001845 yogo sapphire Inorganic materials 0.000 description 3
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 238000006124 Pilkington process Methods 0.000 description 1
- 239000006059 cover glass Substances 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003280 down draw process Methods 0.000 description 1
- 238000007500 overflow downdraw method Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0023—Bending
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/0202—Control of the test
- G01N2203/0212—Theories, calculations
- G01N2203/0218—Calculations based on experimental data
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0278—Thin specimens
- G01N2203/028—One dimensional, e.g. filaments, wires, ropes or cables
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
- G01N2203/0435—Chucks, fixtures, jaws, holders or anvils modifying the type of the force applied, e.g. the chuck transforms a compressive machine for applying a bending test
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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- Life Sciences & Earth Sciences (AREA)
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- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model relates to a flexible glass bending strength test system, this system is including setting up in the mounting bracket: the first pressure plate is provided with a first limiting part, and the first limiting part is used for abutting against the first edge part of the flexible glass so as to limit the movement of the first edge part; the second pressure plate is provided with a second limiting part, and the second limiting part is used for abutting against the second edge part opposite to the first edge part so as to limit the movement of the second edge part; the second pressing plate and the first pressing plate are oppositely arranged along the first direction, and the second pressing plate is movably arranged on the mounting frame along the first direction so as to be close to or far away from the first pressing plate; and the driving device is used for driving the second pressing plate to move towards the first pressing plate along the first direction and can continuously increase the pressure applied to the second pressing plate until the flexible glass pressed and broken between the first pressing plate and the second pressing plate. The test system can accurately test the bending strength of the flexible glass.
Description
Technical Field
The disclosure relates to the technical field of glass, in particular to a flexible glass bending strength testing system.
Background
The mechanical strength of the plate glass is usually measured by bending strength, and the measuring method of the bending strength of the glass material is disclosed in GB/T37781-2019 glass material bending strength test methods, including three-point bending and four-point bending, wherein the two methods have certain requirements on the rigidity of a test sample, and ensure that the test sample does not generate obvious slippage on a supporting roller in the processes of increasing load and moving down a press roller.
In recent years, with the detonation of a foldable mobile phone concept, the market demand of the flexible glass is continuously increased, for mobile display equipment, the mechanical strength of the cover glass is an important technical parameter, the thickness of the flexible glass is generally below 100 μm, the rigidity is very low, and when the bending strength is measured by three-point bending or four-point bending, the flexible glass slides on a support roller along with the increase of load and the downward movement of a press roller, so that the measurement accuracy of the bending strength of the flexible glass is influenced.
Disclosure of Invention
The purpose of this disclosure is to provide a flexible glass bending strength test system, this test system can accurately test flexible glass's bending strength.
In order to achieve the above object, the present disclosure provides a flexible glass bending strength testing system, the testing system includes a mounting bracket, the mounting bracket is provided with:
the first pressure plate is provided with a first limiting part, and the first limiting part is used for abutting against a first edge part of the flexible glass so as to limit the movement of the first edge part;
the second pressure plate is provided with a second limiting part, and the second limiting part is used for abutting against a second edge part of the flexible glass opposite to the first edge part so as to limit the movement of the second edge part;
the second pressing plate and the first pressing plate are oppositely arranged along a first direction, and the second pressing plate is movably arranged on the mounting frame along the first direction so as to be close to or far away from the first pressing plate;
the driving device is used for driving the second pressing plate to move towards the first pressing plate along the first direction and can continuously increase the pressure applied to the second pressing plate until the flexible glass abutting against the space between the first pressing plate and the second pressing plate is broken.
Optionally, the first pressure plate comprises a first pressure plate body and a first limit plate, and the first limit plate is connected to a first side surface of the first pressure plate body close to the second pressure plate in an angle manner so as to define the first limit portion configured as a first limit groove with the first side surface;
the second pressing plate comprises a second pressing plate body and a second limiting plate, and the second limiting plate is connected to a second side face, close to the first pressing plate, of the second pressing plate body in an angle mode so as to limit the second limiting portion, which is formed into a second limiting groove, with the second side face.
Optionally, the first and second platen bodies are parallel to each other.
Optionally, the test system further comprises a first detection device for detecting a first pressure value applied to the second pressure plate by the driving device.
Optionally, the first pressure plate comprises a first pressure plate body and a first limit plate, and the first limit plate is connected to a first side surface of the first pressure plate body close to the second pressure plate in an angle manner so as to define the first limit portion configured as a first limit groove with the first side surface;
the second pressure plate comprises a second pressure plate body and a second limiting plate, and the second limiting plate is connected to a second side surface, close to the first pressure plate, of the second pressure plate body in an angle mode so as to limit the second limiting part which is constructed into a second limiting groove with the second side surface;
the first detection device is configured as a pressure sensor, and the pressure sensor is provided in at least one of the first limit groove and the second limit groove.
Optionally, the test system further comprises a second detection device for detecting a first distance of the first edge portion and the second edge portion in the first direction.
Optionally, the first pressure plate comprises a first pressure plate body and a first limit plate, and the first limit plate is connected to a first side surface of the first pressure plate body close to the second pressure plate in an angle manner so as to define the first limit portion configured as a first limit groove with the first side surface;
the second pressure plate comprises a second pressure plate body and a second limiting plate, and the second limiting plate is connected to a second side surface, close to the first pressure plate, of the second pressure plate body in an angle mode so as to limit the second limiting part which is constructed into a second limiting groove with the second side surface;
the first pressing plate body and the second pressing plate body are parallel to each other, the second detection device comprises an infrared emission sensor and an infrared receiving sensor, one of the infrared emission sensor and the infrared receiving sensor is arranged on the first side face, the other one of the infrared emission sensor and the infrared receiving sensor is arranged on the second side face, and the infrared emission sensor and the infrared receiving sensor are oppositely arranged along the first direction.
Optionally, the test system further comprises a controller, a first detection device for detecting a first pressure value applied to the second platen by the driving device, and a second detection device for detecting a first distance between the first edge portion and the second edge portion in the first direction;
the driving device, the first detection device and the second detection device are electrically connected with the controller, and the controller is used for:
when the flexible glass is broken by pressure, the driving device is controlled to stop driving the second pressing plate to move, the first detection device is controlled to detect the first pressure value, and the second detection device is controlled to detect the first distance.
Optionally, the controller is configured to control the driving device to drive the second pressing plate to move towards the first pressing plate along the first direction at a speed of 1 mm/s.
Optionally, the drive means comprises a hydraulic cylinder.
In the technical scheme, the flexible glass is arranged between the first pressing plate and the second pressing plate by arranging the first pressing plate and the second pressing plate which are opposite along the first direction, the first pressing plate is provided with a first limiting part, and the second pressing plate is provided with a second limiting part; the first limiting part is used for limiting the movement of a first edge part of the flexible glass, and the second limiting part is used for limiting the movement of a second edge part of the flexible glass; therefore, in the process that the driving device drives the second pressing plate to move towards the first pressing plate along the first direction and continuously increase the pressure applied to the second pressing plate, the first edge part and the second edge part cannot move relative to the first limiting part and the second limiting part respectively, and therefore the bending strength of the flexible glass can be accurately measured.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
FIG. 1 is a schematic structural diagram of a flexible glass bending strength testing system according to an embodiment of the present disclosure;
FIG. 2 is a table of specific test data for bending strength testing using the flexible glass bending strength testing system of the present disclosure.
Description of the reference numerals
1 first pressing plate 11 first limit part
12 first side of the first platen body 121
13 first limiting plate 2 second pressing plate
21 second limiting part 22 second pressing plate body
221 second side 23 second limiting plate
3 drive means 4 second detection means
41 infrared emission sensor
42 infrared receiving sensor
10 mount 100 flexible glass
101 first edge 102 second edge
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
In the present disclosure, the use of an orientation word such as "first direction" may be referred to as shown in fig. 1 without being stated to the contrary; terms such as "first" and "second" are used merely to distinguish one element from another and are not sequential or significant.
As shown in fig. 1, the present disclosure provides a flexible glass bending strength testing system, which is characterized in that the testing system includes a mounting frame 10, and the mounting frame 10 is provided with: a first pressing plate 1, a second pressing plate 2 and a driving device 3;
the first pressing plate 1 is provided with a first limiting part 11, and the first limiting part 11 is used for abutting against a first edge part 101 of the flexible glass 100 so as to limit the movement of the first edge part 101;
the second pressure plate 2 is provided with a second limiting part 21, and the second limiting part 21 is used for abutting against a second edge part 102 of the flexible glass 100 opposite to the first edge part 101 so as to limit the movement of the second edge part 102;
the second pressing plate 2 is arranged opposite to the first pressing plate 1 along a first direction A, and the second pressing plate 2 is movably arranged on the mounting frame 10 along the first direction A so as to be close to or far away from the first pressing plate 1;
the driving device 3 is used for driving the second pressing plate 2 to move towards the first pressing plate 1 along the first direction a and can continuously increase the pressure applied to the second pressing plate 2 until the flexible glass 100 abutting between the first pressing plate 1 and the second pressing plate 2 is broken.
In the technical scheme, a first pressing plate 1 and a second pressing plate 2 which are opposite to each other are arranged along a first direction A, so that flexible glass 100 is arranged between the first pressing plate 1 and the second pressing plate 2, a first limiting part 11 is arranged on the first pressing plate 1, and a second limiting part 21 is arranged on the second pressing plate 2; the first limiting part 11 is used for limiting the movement of a first edge part 101 of the flexible glass 100, and the second limiting part 21 is used for limiting the movement of a second edge part 102 of the flexible glass 100; thus, in the process that the driving device 3 drives the second pressing plate 2 to move towards the first pressing plate 1 along the first direction a and continuously increases the pressure applied to the second pressing plate 2, the first edge portion 101 and the second edge portion 102 do not move relative to the first limiting portion 11 and the second limiting portion 21, respectively, so that accurate measurement of the bending strength of the flexible glass 100 can be ensured.
In one embodiment, referring to fig. 1, the first pressure plate 1 includes a first pressure plate body 12 and a first position limiting plate 13, the first position limiting plate 13 is connected to a first side surface 121 of the first pressure plate body 12 close to the second pressure plate 2 in an angle to define a first position limiting portion 11 configured as a first position limiting groove with the first side surface 121; the second press plate 2 includes a second press plate body 22 and a second limit plate 23, and the second limit plate 23 is connected to the second press plate body 22 at an angle close to the second side surface 221 of the first press plate 1 to define a second limit portion 21 configured as a second limit groove with the second side surface 221.
In this embodiment, in the process that the driving device 3 drives the second pressing plate 2 to move towards the first pressing plate 1 along the first direction a, the flexible glass 100 arranged between the first pressing plate 1 and the second pressing plate 2 is bent and the bending degree is gradually increased until the flexible glass 100 is broken; in the whole process, the first edge part 101 of the flexible glass 100 is clamped in the first limiting groove, and the second edge part 102 is clamped in the second limiting groove, so that the first edge part 101 and the second edge part 102 are effectively prevented from moving in the process of the flexible glass 100, for example, the first edge part 101 is prevented from moving along the extending direction of the first pressing plate 1, the second edge part 102 is prevented from moving along the extending direction of the second pressing plate 2, and the measurement precision of the bending strength of the flexible glass 100 is ensured. However, the present disclosure does not limit the specific types of structures of the first stopper portion 11 and the second stopper portion 21, and may provide a good stopper function for the first edge portion 101 and the second edge portion 102 of the flexible glass 100.
Optionally, the first platen body 12 and the second platen body 22 are parallel to each other, thereby facilitating the urging of the flexible glass 100 between the first platen 1 and the second platen 2. Of course, the present disclosure does not limit the positional relationship between the first and second platen bodies 12, 22, and the first and second platen bodies 12, 22 may not be parallel.
In other embodiments, the test system further comprises a first detection device (not shown) for detecting a first pressure value applied to the second press plate 2 by the driving device 3. So that a first pressure value applied by the driving means 3 to the second presser plate 2 can be detected. The first detecting means can also detect the maximum pressure applied to the second presser plate 2 by the driving means 3 when the flexible glass 100 is broken.
Specifically, the first pressure plate 1 comprises a first pressure plate body 12 and a first limit plate 13, wherein the first limit plate 13 is connected to a first side surface 121, close to the second pressure plate 2, of the first pressure plate body 12 in an angle manner so as to define a first limit part 11 configured as a first limit groove with the first side surface 121; the second press plate 2 comprises a second press plate body 22 and a second limit plate 23, the second limit plate 23 is connected to the second press plate body 22 at an angle close to the second side surface 221 of the first press plate 1 so as to define a second limit part 21 which is constructed as a second limit groove with the second side surface 221; the first detection device is configured as a pressure sensor, and a pressure sensor is provided in at least one of the first limit groove and the second limit groove.
In this embodiment, first, by providing the first detection means as a pressure sensor, the pressure can be accurately measured while the manufacturing cost is effectively reduced; secondly, through setting up pressure sensor in at least one of first spacing groove and second spacing groove, can also make full use of current arrangement space when guaranteeing measurement accuracy, avoid setting up mounting structure alone to reduce manufacturing cost effectively.
Referring to fig. 1, the test system further comprises a second detection device 4, the second detection device 4 being configured to detect a first distance between the first edge 101 and the second edge 102 in the first direction a. In particular, when the flexible glass 100 breaks, the second detection device 4 can also detect the first distance between the first edge 101 and the second edge 102 in the first direction a, so that the bending strength can be calculated according to the calculation formula of the bending strength. The specific calculation formula will be described below. The automation degree of measurement is improved.
Specifically, referring to fig. 1, the first pressure plate 1 includes a first pressure plate body 12 and a first position limiting plate 13, and the first position limiting plate 13 is connected to a first side surface 121 of the first pressure plate body 12 close to the second pressure plate 2 at an angle so as to define a first position limiting portion 11 configured as a first position limiting groove with the first side surface 121;
the second press plate 2 comprises a second press plate body 22 and a second limit plate 23, the second limit plate 23 is connected to the second press plate body 22 at an angle close to the second side surface 221 of the first press plate 1 so as to define a second limit part 21 which is constructed as a second limit groove with the second side surface 221;
the first presser body 12 and the second presser body 22 are parallel to each other, the second detecting device 4 includes an infrared ray emitting sensor 41 and an infrared ray receiving sensor 42, one of the infrared ray emitting sensor 41 and the infrared ray receiving sensor 42 is provided on the first side surface 121, the other is provided on the second side surface 221, and the infrared ray emitting sensor 41 and the infrared ray receiving sensor 42 are oppositely provided along the first direction a.
In this embodiment, first, the first platen body 12 and the second platen body 22 are arranged in parallel with each other, the infrared emission sensor 41 is provided on one of the first side surface 121 and the second side surface 221, the infrared reception sensor 42 is provided on the other, and the infrared emission sensor 41 and the infrared reception sensor 42 are provided so as to face each other in the first direction a, so that the distance between the first platen body 12 and the second platen body 22 in the first direction a, that is, the distance between the first edge portion 101 and the second edge portion 102 of the flexible glass 100 in the first direction a can be measured efficiently. High automation degree, accurate measurement and low manufacturing cost. Of course, the present disclosure does not limit the specific structure type of the second detection device 4, and the distance between the first edge 101 and the second edge 102 of the flexible glass 100 in the first direction a can be effectively and accurately measured.
In addition, the test system further comprises a controller (not shown), a first detection device for detecting a first pressure value applied to the second press plate 2 by the driving device 3, and a second detection device 4 for detecting a first distance between the first edge portion 101 and the second edge portion 102 in the first direction a; the driving device 3, the first detection device and the second detection device 4 are all electrically connected with the controller, and the controller is used for: when the flexible glass 100 is broken by pressure, the driving device 3 is controlled to stop driving the second pressing plate 2 to move, the first detection device is controlled to detect the first pressure value, and the second detection device 4 is controlled to detect the first distance.
In this embodiment, by providing the controller, when the flexible glass 100 is broken, the controller can control the first detection device and the second detection device to automatically detect the first pressure value and the first distance, so as to improve the automation degree of measurement; the first and second pressure values may then be introduced into a bending strength measurement equation to calculate the bending strength of the flexible glass 100. When judging whether flexible glass 100 is broken, can judge through the mode of artifical discernment and also can carry out self-checking through detection device, and this disclosure does not put any limit to this.
Optionally, the controller is adapted to control the driving means 3 to drive the second platen 2 to move towards the first platen 1 in the first direction a at a speed of 1 mm/s. The phenomenon that the second pressing plate 2 cannot be effectively stopped in time due to the fact that the moving speed of the second pressing plate 2 is too high is avoided.
In addition, the driving device 3 may include a hydraulic cylinder for driving the second pressing plate 2 to move toward the first pressing plate 1 in the first direction a while continuously increasing the pressure applied to the second pressing plate 2. The driving is stable and the cost is low. However, the present disclosure does not limit the specific type of structure of the driving device 3.
In addition, the present disclosure additionally provides a method for measuring the bending strength of flexible glass, wherein the method for measuring the bending strength of the flexible glass comprises the following steps:
1. cutting and grinding to prepare a test sample of the flexible glass 100;
2. a test sample of the flexible glass 100 is placed between the first pressing plate 1 and the second pressing plate along the first direction a with the long edge portion, and the two short edge portions are respectively configured as the first edge portion and the second edge portion so as to respectively abut against the first limiting portion 11 and the second limiting portion 21;
3. the second pressing plate 2 moves towards the first pressing plate 1 along the first direction A at a certain speed, and in the moving process, the pressure applied to the test sample of the flexible glass 100 by the second pressing plate 2 is gradually increased until the second pressing plate 2 stops moving when the test sample of the flexible glass 100 is broken;
4. calculating the bending strength σ of the flexible glass 100:
σ＝(3*F*L)/(2*b*h*h)
wherein:
f load applied to the test specimen of the flexible glass 100 at break, N
L: distance, mm, of first edge portion 101 and second edge portion 102 in first direction a at break of test sample of flexible glass 100
b length, mm, of the first edge portion 101 or the second edge portion 102 of the test sample of flexible glass 100
h thickness of test sample of Flexible glass 100, mm
Optionally, the test sample of flexible glass 100 described above has a thickness of no greater than 0.1 mm.
Alternatively, the test sample of flexible glass 100 is rectangular, having a length of 80-100mm and a width of 40-50 mm.
The test sample of the flexible glass 100 can be directly cut on a flexible glass plate product, and the edge part of the flexible glass plate product is subjected to grinding and polishing treatment.
The speed of the second press plate 2 may be between 1mm/s and 5 mm/s.
Alternatively, the chemical composition of flexible glass 100 comprises, in weight percent, 55-65% SiO2, 0-5% B2O3, 10-25% Al2O3, 5-15% Na2O, 0-10% K2O, and 1-10% RO. Wherein RO is one or more of MgO, CaO, SrO and BaO.
Optionally, the flexible glass 100 has a Young's modulus of 65-85 GPa.
In the specific implementation process, the flexible glass 100 may be obtained by a conventional flat glass production method, such as a float method, an overflow downdraw method, a slit downdraw method, a secondary drawing method, or by chemically thinning a thicker flat glass to obtain the flexible glass 100.
For example, the flexible glass 100 is manufactured by a double drawing method, in which a flat glass sheet having a thickness of 0.2 to 1mm is heated and then secondarily drawn into the flexible glass 100 having a thickness of 0.02 to 0.1mm, and then a test sample is directly cut on the flexible glass 100.
Referring to fig. 2, in examples 1 to 3, the flexible glass 100 has a thickness of 0.02mm, 0.03mm and 0.04mm, is cut into test samples having a length of 100mm and a width of 50mm by laser, and the edges are polished to remove cutting marks and deep microcracks at the edges, and the glass has a chemical composition, in weight percent, of 62% of SiO2, 2% of B2O3, 20% of Al2O3, 12% of Na2O, 2% of K2O and 2% of MgO, and a young modulus of 68 GPa.
In examples 4 to 6, the flexible glass 100 had thicknesses of 0.05mm, 0.06mm and 0.07mm, respectively, was cut by laser into test specimens having a length of 80mm and a width of 40mm, and the edges were subjected to a grinding and polishing treatment to remove cutting marks and microcracks deep at the edges, and had a chemical composition containing, in weight%, 71% of SiO2, 0.5% of B2O3, 13.5% of Al2O3, 0.5% of ZnO, 4% of MgO, 6% of CaO, 0.5% of SrO and 4% of BaO, and a young's modulus of 80 GPa.
Fig. 2 is test data of the bending strength of the flexible glass, and the data is for illustration and explanation only and is not meant to limit the scope of protection.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (10)
1. A flexible glass bending strength test system, characterized in that, test system includes mounting bracket (10), be provided with on mounting bracket (10):
the glass pressing device comprises a first pressing plate (1), wherein a first limiting part (11) is arranged on the first pressing plate (1), and the first limiting part (11) is used for abutting against a first edge part (101) of flexible glass (100) so as to limit the movement of the first edge part (101);
the second pressure plate (2) is provided with a second limiting part (21), and the second limiting part (21) is used for abutting against a second edge part (102) of the flexible glass (100) opposite to the first edge part (101) so as to limit the movement of the second edge part (102);
the second pressing plate (2) and the first pressing plate (1) are arranged oppositely along a first direction (A), and the second pressing plate (2) is movably arranged on the mounting frame (10) along the first direction (A) to be close to or far away from the first pressing plate (1);
the driving device (3) is used for driving the second pressing plate (2) to move towards the first pressing plate (1) along the first direction (A) and continuously increasing the pressure applied to the second pressing plate (2) until the flexible glass (100) abutting against the space between the first pressing plate (1) and the second pressing plate (2) is broken.
2. The flexible glass bending strength testing system according to claim 1,
the first pressure plate (1) comprises a first pressure plate body (12) and a first limiting plate (13), and the first limiting plate (13) is connected to a first side surface (121) of the first pressure plate body (12) close to the second pressure plate (2) in an angle manner so as to define a first limiting part (11) which is constructed as a first limiting groove with the first side surface (121);
the second pressing plate (2) comprises a second pressing plate body (22) and a second limiting plate (23), the second limiting plate (23) is connected to a second side surface (221) of the second pressing plate body (22) close to the first pressing plate (1) in an angle mode, and the second limiting portion (21) which is formed into a second limiting groove is limited by the second side surface (221).
3. The flexible glass bend strength testing system of claim 2, wherein the first platen body (12) and the second platen body (22) are parallel to each other.
4. The flexible glass bending strength testing system according to claim 1, wherein the testing system further comprises a first detecting device for detecting a first pressure value applied to the second press plate (2) by the driving device (3).
5. The flexible glass bending strength testing system according to claim 4,
the first pressure plate (1) comprises a first pressure plate body (12) and a first limiting plate (13), and the first limiting plate (13) is connected to a first side surface (121) of the first pressure plate body (12) close to the second pressure plate (2) in an angle manner so as to define a first limiting part (11) which is constructed as a first limiting groove with the first side surface (121);
the second pressure plate (2) comprises a second pressure plate body (22) and a second limiting plate (23), the second limiting plate (23) is connected to a second side surface (221) of the second pressure plate body (22) close to the first pressure plate (1) in an angle mode, and the second side surface (221) and the second limiting portion (21) which is constructed into a second limiting groove are limited;
the first detection device is configured as a pressure sensor, and the pressure sensor is provided in at least one of the first limit groove and the second limit groove.
6. The flexible glass bending strength testing system according to claim 1, wherein the testing system further comprises a second detecting device (4), the second detecting device (4) being configured to detect a first distance of the first edge portion (101) and the second edge portion (102) in the first direction (a).
7. The flexible glass bending strength testing system according to claim 6,
the first pressure plate (1) comprises a first pressure plate body (12) and a first limiting plate (13), and the first limiting plate (13) is connected to a first side surface (121) of the first pressure plate body (12) close to the second pressure plate (2) in an angle manner so as to define a first limiting part (11) which is constructed as a first limiting groove with the first side surface (121);
the second pressure plate (2) comprises a second pressure plate body (22) and a second limiting plate (23), the second limiting plate (23) is connected to a second side surface (221) of the second pressure plate body (22) close to the first pressure plate (1) in an angle mode, and the second side surface (221) and the second limiting portion (21) which is constructed into a second limiting groove are limited;
the first pressing plate body (12) and the second pressing plate body (22) are parallel to each other, the second detection device (4) comprises an infrared ray emission sensor (41) and an infrared ray receiving sensor (42), one of the infrared ray emission sensor (41) and the infrared ray receiving sensor (42) is arranged on the first side surface (121), the other one of the infrared ray emission sensor (41) and the infrared ray receiving sensor (42) is arranged on the second side surface (221), and the infrared ray emission sensor (41) and the infrared ray receiving sensor (42) are arranged oppositely along the first direction (A).
8. The flexible glass bending strength testing system according to claim 1,
the test system further comprises a controller, first detection means for detecting a first pressure value applied by the drive means (3) to the second platen (2), and second detection means (4) for detecting a first distance of the first edge portion (101) and the second edge portion (102) in the first direction (a);
the driving device (3), the first detection device and the second detection device (4) are all electrically connected with the controller, and the controller is used for:
when the flexible glass (100) is broken by pressure, the driving device (3) is controlled to stop driving the second pressing plate (2) to move, the first detection device is controlled to detect the first pressure value, and the second detection device (4) is controlled to detect the first distance.
9. The flexible glass bending strength testing system according to claim 8, wherein the controller is configured to control the driving device (3) to drive the second platen (2) towards the first platen (1) in the first direction (A) at a speed of 1 mm/s.
10. The flexible glass bending strength testing system according to claim 1, wherein the driving means (3) comprises a hydraulic cylinder.
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| CN202110667947.8A CN113552002A (en) | 2021-06-16 | 2021-06-16 | Flexible glass bending strength test system |
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| CN202110667947.8A CN113552002A (en) | 2021-06-16 | 2021-06-16 | Flexible glass bending strength test system |
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