A device for testing the tensile and aging properties of sealant

Abstract

The application relates to a sealant tensile and aging performance testing device which comprises a mechanical loading device, a force sensor, a displacement sensor, an aging cabinet, and a spraying system, a rain barrier system and a rain drainage system on the aging cabinet; the spraying systems are evenly distributed on the two sides of the aging cabinet; the rain barrier systems are evenly distributed above the two samples; the rain drainage systems are evenly distributed in the x-axis direction of the two samples; the force sensors are distributed below the two samples; and the displacement sensors are distributed on the aging side and the horizontal side of the sealant strips. Compared with the prior art, the sealant tensile and aging performance testing device can simultaneously realize aging and mechanical loading of the samples, and can measure the displacement between the glass panel and the aluminum frame, and can realize accurate control of the set displacement period.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rubber material performance testing, in particular to a sealant tensile shear and aging performance testing device. BACKGROUND

[0002] Sealant is a kind of rubber material with certain adhesive properties, which has the functions of waterproofing, anti-vibration, sound insulation and heat insulation, and is widely used in the fields of construction, automobiles, electronics, etc. During the entire service life of the sealant, the sealant will be subjected to various mechanical and climatic loads, leading to aging and fatigue of the sealant, which may affect the performance and reliability of the bonding. In order to absolutely avoid bonding failure, the durability of the sealant must be ensured, so the most important thing for sealant design is to meet the reliable bonding requirements, and the tensile shear and aging performance testing of the sealant is very necessary.

[0003] In the accelerated aging test of weather-resistant sealant, in order to simulate its service state, it is necessary to simultaneously apply environmental effects (weathering, lighting, humidity, etc.) and mechanical strains (including tensile / compression and shear cycles) to the sealant. In order to accelerate aging by applying environmental effects to the sealant sample in an artificial climate simulation test chamber, in order to simultaneously apply mechanical strains, the loading device should meet the demand of stable operation in the artificial climate simulation test chamber. However, in the current weather-resistant sealant aging test, the loading device used is usually an electrically driven fatigue loading device, which is limited by the size of the device, electrical safety, durability of parts, etc., and is not suitable for operation in the aging chamber, so the environmental effects and mechanical strains need to be applied separately, and shear strain cannot be applied, which cannot well simulate the real service state and is not easy to achieve the expected experimental results. Therefore, when carrying out such experiments, there is an urgent need for a loading device that can apply mechanical strains including shear strain to the weather-resistant sealant sample, can work in the aging chamber and does not affect the synchronous effect of environmental effects and mechanical strains.

[0004] Comprehensive durability testing requires knowledge and technology of all relevant aging and fatigue excitation loads. Accelerated aging and fatigue mechanisms must be applied to obtain test results within a reasonable time period. Currently, both the European test and design method ETAG002 and the American ASTM standard are using separate aging tests and fatigue tests. In fact, real structures are simultaneously exposed to multiple loads, and aging mechanisms interact and may amplify each other. SUMMARY

[0005] The purpose of the present application is to overcome the defects of the prior art and provide a tensile shear and aging performance testing device for simultaneously applying two-dimensional mechanical load and aging to sealant.

[0006] The purpose of the present application can be achieved by the following technical solutions:

[0007] The application provides a device for testing the tensile and shear and aging performance of sealant, which comprises a mechanical loading device, a force sensor, a displacement sensor, an aging cabinet, a spraying system, a rain barrier system and a rain drainage system on the aging cabinet.

[0008] Further, the horizontal loading device is used for applying horizontal displacement to the sample.

[0009] Further, the vertical loading device is used for applying vertical displacement to the sample.

[0010] Further, the force sensor is used for measuring the transmitted force in the horizontal and vertical directions.

[0011] Further, the sliding bracket is used for bearing the sample to realize displacement.

[0012] Further, the sample to be tested is used for studying the influence of mechanical and climatic combined exposure on the sample.

[0013] Further, the sample to be tested comprises an aluminum frame, a sealant bead and a glass panel.

[0014] Further, the aging cabinet is used for simulating different climate environments to apply action to the sealant bead to accelerate aging.

[0015] Further, the displacement sensor is used for measuring the vertical displacement of the sealant bead joint and the horizontal displacement between the glass panel and the aluminum frame.

[0016] Further, the vertical loading device is located above the horizontal loading device; the sliding bracket is located above the vertical loading device; the sample to be tested is located above the sliding bracket; and the aging cabinet is located above the sample to be tested.

[0017] Further, the force sensor is located on the inner side of the sliding bracket.

[0018] Further, the displacement sensor is located on the side of the sliding bracket.

[0019] Further, the horizontal loading device comprises a horizontal actuator and a horizontal rail, controls x-direction loading, and performs tensile test on the sealant bead; the horizontal actuator is connected to the horizontal side plate of the horizontal rail.

[0020] Further, the vertical loading device comprises a vertical actuator and a vertical rail, controls z-direction loading, and performs shear test on the sealant bead; the vertical rail is connected to the horizontal rail; and the vertical actuator is connected below the bottom plate of the vertical rail.

[0021] Further, the sliding bracket is in a "concave" shape. The sliding bracket includes a first sliding bracket and a second sliding bracket, which are connected between the force sensor and the sample to be tested; the first sliding bracket and the second sliding bracket are both divided above the vertical track, and the sliding bracket is parallel to the horizontal actuator.

[0022] Further, the mechanical loading device is connected with a force sensor and a displacement sensor.

[0023] Further, the force sensor includes a first force sensor and a second force sensor, the first force sensor is arranged at the inner side of the two sides of the first sliding bracket, and the second force sensor is arranged at the inner side of the two sides of the second sliding bracket.

[0024] The displacement sensor includes a left displacement sensor and a right displacement sensor, the left displacement sensor includes a left first displacement sensor, a left second displacement sensor and a left third displacement sensor. The left first displacement sensor is arranged at 20 mm of the first sliding bracket and located at the aging side of the first sealant strip, the left second displacement sensor is arranged at 380 mm of the first sliding bracket and located at the aging side of the second sealant strip. The left first displacement sensor and the left second displacement sensor are both used for measuring the z-direction displacement of the sealant joint. The left third displacement sensor is arranged at 330 mm of the left side of the first sliding bracket and used for measuring the x-direction displacement between the glass plate and the aluminum frame. The right displacement sensor includes a right first displacement sensor, a right second displacement sensor and a right third displacement sensor. The right first displacement sensor is arranged at 20 mm of the second sliding bracket, the right second displacement sensor is arranged at 380 mm of the second sliding bracket, and the right third displacement sensor is arranged at 330 mm of the right side of the second sliding bracket.

[0025] Further, the aging cabinet includes a first aging cabinet and a second aging cabinet, and the first aging cabinet and the second aging cabinet are both provided with a spraying system, a rainwater drainage system and a rainwater barrier system.

[0026] Further, the sample to be tested includes a first sample to be tested and a second sample to be tested; the aging cabinet includes a first aging cabinet and a second aging cabinet arranged in parallel; the first aging cabinet includes a first spraying system, a first rainwater barrier system and a first rainwater drainage system; and the second aging cabinet includes a second spraying system, a second rainwater barrier system and a second rainwater drainage system.

[0027] Further, the first and second aging cabinets are used for simulating different climate conditions, and the middle parts of the x-direction outer sides of the first and second aging cabinets are respectively provided with rainwater drainage systems for draining rainwater.

[0028] Further, the spraying system comprises one water inlet and two water outlets, and the water outlets are arranged below the glass panel for spraying water and cleaning agent to one side of the sealant.

[0029] Compared with the prior art, the present application has the following advantages:

[0030] (1) The existing technology is mainly single-factor performance test, and the present application simultaneously applies aging and two-dimensional mechanical load for sealant tensile shear and aging test, and one climate cycle comprises simultaneous changes of several climate operation conditions, so that the structure is actually exposed to multiple loads.

[0031] (2) The mechanical loading device designed in the present application has two hydraulic actuators and a sliding bracket, which allows accurate control of the set displacement cycle. The mechanical loading device can perform tensile test, cross-shaped intersection and linear shear test on the sealant strip test sample in and out of the glass plane.

[0032] (3) The present application comprises two aging cabinets, which can test different types of sealants, and realize tensile shear and aging comparison test of different sealants.

[0033] (4) The present application can simultaneously add ultraviolet lamps for ultraviolet radiation aging test. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 It is a three-dimensional schematic view of the overall test device of the embodiment of the present application;

[0035] Figure 2 It is a top view structural schematic view of the overall test device of the embodiment of the present application;

[0036] Figure 3 It is a side view structural schematic view of the overall test device of the embodiment of the present application;

[0037] Figure 4 It is a three-dimensional schematic view of the horizontal loading device and the vertical loading device of the embodiment of the present application;

[0038] Figure 5 It is a three-dimensional schematic view of the aging cabinet of the embodiment of the present application;

[0039] Figure 6A perspective view of a sliding bracket according to an embodiment of the present application;

[0040] Figure 7 A perspective view of a sample to be tested according to an embodiment of the present application;

[0041] Figure 8 A perspective view of a spraying system according to an embodiment of the present application;

[0042] Figure 9 A perspective view of a sensor arrangement at a first sample to be tested according to an embodiment of the present application;

[0043] Figure 10 A plan view of a sensor arrangement according to an embodiment of the present application.

[0044] Reference numerals in the drawings: 1, horizontal loading device, 101, horizontal track, 102, horizontal actuator, 2, vertical loading device, 201, vertical track, 202, vertical actuator, 3, force sensor, 301, first force sensor, 302, second force sensor, 4, sliding bracket, 401, first sliding bracket, 5, sample to be tested, 501, first sample to be tested, 5011, first aluminum frame, 5012, first sealant strip, 5013, first glass panel, 502, second sample to be tested, 5021, second aluminum frame, 5022, second sealant strip, 5023, second glass panel, 6, aging cabinet, 601, first aging cabinet, 602, second aging cabinet, 6011, first spraying system, 6012, first rain barrier system, 6013, first rain drainage system, 6021, second spraying system, 6022, second rain barrier system, 6023, second rain drainage system, 7, displacement sensor, 7011, left first displacement sensor, 7012, left second displacement sensor, 7013, left third displacement sensor, 7021, right first displacement sensor, 7022, right second displacement sensor, 7023, right third displacement sensor. DETAILED DESCRIPTION

[0045] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0046] The following detailed description of embodiments of the application in the drawings provided is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the application.

[0047] In the description of embodiments of the application, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly understood by those skilled in the art, and are merely for the convenience of describing the application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0048] In the description of embodiments of the application, it should be noted that unless otherwise explicitly specified and limited, the terms "set", "mount", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements inside. For those of ordinary skill in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0049] As shown in Figure 1 , 4 The sealant tensile and aging performance test device of the application comprises a horizontal loading device 1, a vertical loading device 2, a force sensor 3, a sliding bracket 4 and a sample to be tested 5. The horizontal loading device 1 comprises a horizontal track 101 and a horizontal actuator 102. The vertical loading device 2 comprises a vertical track 201 and a vertical actuator 202. The aging cabinet 6 comprises a first aging cabinet 601 and a second aging cabinet 602, which are arranged on the left and right sides of the device respectively. The left outer wall of the first aging cabinet 601 is connected with a first spraying system 6011 and connected with a first rainwater barrier 6012, and a first rainwater drainage system 6013 is arranged in the middle of the x-direction outer side. The right outer wall of the second aging cabinet 602 is connected with a second spraying system 6021 and connected with a second rainwater barrier 6022, and a second rainwater drainage system 6023 is arranged in the middle of the x-direction outer side.

[0050] As shown in Figure 6 , the first sample to be tested comprises an aluminum frame 5011, a sealant strip 5012 and a glass panel 5013, and the sealant strip 5012 is connected between the aluminum frame 5011 and the glass panel 5013.

[0051] At the time of testing, the first aging cabinet 601 and the second aging cabinet 602 are used to simulate different environmental and mechanical loading environments. The superimposed aging and mechanical loading includes at least 50 climate cycles. The climate cycle includes simultaneous changes of several climate operating conditions and exposure to ultraviolet light radiation installed on the top of the climate chamber.

[0052] Specifically, with the first aging cabinet 601, the aluminum frame 5011 is installed on the first sliding bracket 401 before testing, fixed below the first aging cabinet 601, the horizontal actuator 102 and the vertical actuator 202 are reset to their initial positions, and all sensors are zeroed before starting the test. First, change the humidity in the test chamber by the first rainwater drainage system 6013, use the first spraying system 6011 to spray deionized water and detergent on one side of the first sealing strip 5012, which can achieve comprehensive aging test results, and at the same time use the ultraviolet light to test the aging of the sealing glue, which is convenient for further testing the aging performance of the sealing glue. The left first displacement sensor 7011 is arranged at 20 mm of the first sliding bracket 401, and the left second displacement sensor 7012 is arranged at 380 mm of the first sliding bracket 401, which are used to measure the z-direction displacement of the sealing glue joint. The left third displacement sensor 7013 is arranged at 330 mm of the left side of the first sliding bracket, which is used to measure the x-direction displacement between the first aluminum frame 5011 and the first glass panel 5013, as shown in Figure 8 The first force sensor 301 is connected to the bottom plate of the first sliding bracket 401, and the first sliding bracket 401 is cyclically moved in the x-direction by the horizontal actuator 102. Similarly, the second test sample is cyclically moved in the z-direction by the vertical actuator 202, realizing the tensile and shear test of the test sample. According to the stress-strain curve of the tensile and shear test, the characteristic mechanical parameters: strength (maximum stress), yield strain and modulus are evaluated. In practical applications, the arrangement position of the sealing glue can also be changed to realize different shear tests of the sealing glue inside and outside the glass plane.

[0053] The above detailed description of the embodiments of the present patent is made in combination with the drawings, but the present patent is not limited to the described embodiments. For those skilled in the art, within the scope of the principles and technical ideas of the present patent, various changes, modifications, replacements and deformations of the embodiments still fall within the protection scope of the present patent.

Claims

1. A device for testing the peel and shear and aging performance of sealant, characterized in that, The utility model relates to a mechanical and climate combined exposure test device, which comprises the following parts: a horizontal loading device (1) for applying horizontal displacement to a test sample; a vertical loading device (2) for applying vertical displacement to the test sample; a force sensor (3) for measuring the transmitted force in the horizontal and vertical directions; a sliding bracket (4) for carrying the test sample to realize displacement; a test sample (5) for studying the influence of mechanical and climate combined exposure on the test sample, which comprises an aluminum frame, a sealant bead and a glass panel, the upper part of the sealant bead is connected to the glass panel, and the lower part is connected to the aluminum frame; an aging cabinet (6) for simulating different climate environments to apply action to the sealant bead to accelerate aging; a displacement sensor (7) for measuring the vertical displacement of the sealant bead joint and the horizontal displacement between the glass panel and the aluminum frame; the vertical loading device (2) is located above the horizontal loading device (1); the sliding bracket (4) is arranged above the vertical loading device (2); the test sample (5) is arranged above the sliding bracket (4); and the aging cabinet (6) is arranged outside the test sample (5); the force sensor (3) is arranged on the inner side of the sliding bracket (4); the displacement sensor (7) is arranged on the side of the sliding bracket (4); the aluminum frame is in contact with the lower plane of the top surface of the sliding bracket (4); and the glass panel is arranged on the higher plane of the top surface of the sliding bracket (4); the aging cabinet (6) comprises a spraying system, a rain barrier system and a rain drainage system; the spraying system is arranged on the outer wall of the aging cabinet (6); the rain barrier system is arranged above the test sample (5); and the rain drainage system is arranged on the outer side of the aging cabinet (6).

2. The apparatus for testing the tensile and aging properties of sealant according to claim 1, wherein The horizontal loading device (1) comprises a horizontal rail (101), and a horizontal side plate of the horizontal rail (101) is connected with a horizontal actuator (102).

3. The apparatus for testing the pull and aging performance of sealant according to claim 2, wherein the apparatus is characterized by The vertical loading device (2) comprises a vertical rail (201) and a vertical actuator (202), and the vertical rail (201) is connected with the horizontal rail (101), and the vertical actuator (202) is connected below the bottom plate of the vertical rail (201).

4. The apparatus for testing the pull and aging performance of sealant according to claim 3, wherein, The sliding bracket (4) comprises a first sliding bracket (401) and a second sliding bracket (402), the first sliding bracket (401) and the second sliding bracket (402) are arranged above the vertical rail (201), the sliding bracket (4) is parallel to the horizontal actuator (102), and the sliding bracket (4) is in the shape of a "concave" character.

5. The apparatus for testing the pull and aging performance of sealant according to claim 4, wherein, The force sensor (3) comprises a first force sensor (301) and a second force sensor (302), the first force sensor (301) is arranged on the inner side of both sides of the first sliding bracket (401), and the second force sensor (302) is arranged on the inner side of both sides of the second sliding bracket (402).

6. The apparatus for testing the tensile and aging properties of sealant of claim 1, wherein The to-be-tested sample (5) comprises a first to-be-tested sample (501) and a second to-be-tested sample (502); the aging cabinet (6) comprises a first aging cabinet (601) and a second aging cabinet (602); the first aging cabinet (601) comprises a first spraying system (6011), a first rainwater barrier system (6012) and a first rainwater drainage system (6013), and the second aging cabinet (602) comprises a second spraying system (6021), a second rainwater barrier system (6022) and a second rainwater drainage system (6023).

7. The apparatus for testing the pull and aging performance of sealant according to claim 6, wherein, The first to-be-tested sample (501) comprises a first aluminum frame (5011), a first sealant strip (5012) and a first glass panel (5013), and the second to-be-tested sample (502) comprises a second aluminum frame (5021), a second sealant strip (5022) and a second glass panel (5023); the first aluminum frame (5011) is in contact with the lower plane of the top surface of the first sliding bracket (401), and the second aluminum frame (5021) is in contact with the lower plane of the top surface of the second sliding bracket (402); the first glass panel (5013) is arranged on the higher plane of the top surface of the first sliding bracket (401), and the second glass panel (5023) is arranged on the higher plane of the top surface of the second sliding bracket (402).

8. The apparatus for testing the pull and aging performance of sealant according to claim 7, wherein, The first to-be-tested sample (501) is installed in the first aging cabinet (601), and the second to-be-tested sample (502) is installed in the second aging cabinet (602).

9. The apparatus for testing the pull and aging performance of sealant according to claim 6, wherein, The first spraying system (6011) is arranged on the outer wall of the first aging cabinet (601), and the second spraying system (6021) is arranged on the outer wall of the second aging cabinet (602); the first rainwater barrier system (6012) is arranged above the first to-be-tested sample (501), and the second rainwater barrier system (6022) is arranged above the second to-be-tested sample (502); the first rainwater drainage system (6013) is arranged on the outer side of the first aging cabinet (601), and the second rainwater drainage system (6023) is arranged on the outer side of the second aging cabinet (602).

10. The apparatus for testing the pull and aging performance of sealant according to claim 9, wherein, The displacement sensor (7) comprises a left displacement sensor (701) and a right displacement sensor (702); the left displacement sensor (701) comprises a left first displacement sensor (7011), a left second displacement sensor (7012) and a left third displacement sensor (7013), and the right displacement sensor (702) comprises a right first displacement sensor (7021), a right second displacement sensor (7022) and a right third displacement sensor (7023); the left first displacement sensor (7011) and the left second displacement sensor (7012) are located on the aging side of the first sealant strip (5012), and the right first displacement sensor (7021) and the right second displacement sensor (7022) are located on the aging side of the second sealant strip (5022).

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