A device and method for detecting bonding performance of silane-modified polyurethane sealant

Abstract

The present invention discloses a device and method for detecting the bonding performance of silane-modified polyurethane sealant, and relates to the technical field of detecting the bonding performance of sealants. The present invention includes a detection base, a force detection part and a control and positioning part, wherein the control and positioning part is used to apply and feed the sealant and realize the free regulation of the detection environment, and the force detection part can cooperate with the control and positioning part to detect the bonding performance of the sealant; the control and positioning part includes a positioning and regulating component provided with a lower base plate, a gluing mechanism and a spraying mechanism. The advantages are: the present invention can quickly complete the application, adhesion and curing of the sealant, improve the detection efficiency, and can detect the adhesive peel strength of the sealant at different deflection angles, and at the same time, the external temperature and humidity of the sealant can be changed during the detection, so as to detect whether the bonding strength of the sealant under different external environments has changed and the amount of change, and the detection variables are more, and the detection results are highly accurate.

Description

Technical Field

[0001] The invention relates to the technical field of sealant bonding performance detection, and in particular to a silane-modified polyurethane sealant bonding performance detection device and method. Background Art

[0002] Silane-modified polyurethane sealant refers to an adhesive with excellent sealing performance composed of polyurethane base glue and silane modifier. It is widely used in sealing and bonding in the fields of construction, automobiles, ships, aerospace, electronics, furniture, etc. After the preparation of silane-modified polyurethane sealant, it is usually tested for performance using an adhesive performance test device to determine whether it is qualified;

[0003] Existing detection devices use a variety of methods to detect the adhesive properties of sealants. For example, the Chinese invention patent with publication number CN115014930A discloses a sealant fatigue performance detection tool and operation method, including a driving unit, a reset correction device arranged on a base, a stretching / compression loading device slidably arranged on the reset correction device, and a torsion loading device arranged on the base corresponding to the stretching / compression loading device; a clamping assembly, including an upper clamping head arranged on the stretching / compression loading device through an upper clamping seat, and a lower clamping sleeve arranged on the torsion loading device through a lower clamping seat;

[0004] When testing sealants, the existing detection device can only detect the adhesive performance of the sealant in a vertical state, but cannot detect the adhesive peeling strength of the sealant at different angles, nor can it detect the adhesive performance under different external environments. For example, the above-referenced prior art can only apply a vertical force to the upper clamp seat and the lower clamp seat to detect the vertical adhesiveness of the sealant, but cannot detect the adhesive peeling strength of the sealant at different angles. Moreover, it is also impossible to detect external environmental variables during the detection, that is, it is impossible to detect whether the adhesive performance of the sealant changes under different external environments;

[0005] Therefore, it is urgent to design a silane-modified polyurethane sealant bonding performance detection device and method to solve the above problems. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a device and method for detecting the bonding performance of a silane-modified polyurethane sealant, which solves the problems raised in the above-mentioned background technology.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a silane-modified polyurethane sealant bonding performance detection device, comprising a detection base, a force detection part and a regulating and positioning part, wherein the regulating and positioning part is used to apply the silane-modified polyurethane sealant and realize the free regulation of the detection environment, and the force detection part can cooperate with the regulating and positioning part to detect the bonding performance of the sealant;

[0008] The control and positioning part includes a positioning and control component provided with a lower base plate, a glue coating mechanism and a spray mechanism. The positioning and control component is used to install the lower base plate and adjust its deflection angle. The spray mechanism is used to accelerate the curing of the sealant and change the detection environment.

[0009] The force detection part includes a force mechanism and an auxiliary mechanism. An upper base is arranged in the auxiliary mechanism. The glue coating mechanism is used to evenly apply sealant between the upper base and the lower base. The upper base and the lower base are both provided with heating wires for heating the sealant. The force mechanism is used to apply a stable pulling force to the upper base and the lower base after the sealant is applied and to detect the bonding performance of the sealant.

[0010] Preferably, a control console is provided on the detection base, and the control console is used to control the operation opening and closing states of the positioning part and the force detection part, and calculate and display the detection results.

[0011] Preferably, the positioning and control component includes a supporting frame fixedly mounted on the detection base, the detection frame is installed on the supporting frame through a lifting mechanism, the detection frame is provided with a hexagonal hole and a round hole, and the hexagonal hole is communicated with the round hole, a hexagonal limiting column is slidably mounted in the hexagonal hole, a round rod is slidably mounted in the round hole, and the round rod is fixedly mounted on the hexagonal limiting column, a control handle is fixedly mounted on the hexagonal limiting column, a placing plate is fixedly mounted on the round rod, a threaded positioning rod is fixedly mounted on the placing plate, and the lower base plate is threadedly mounted on the threaded positioning rod.

[0012] Preferably, the lifting mechanism includes two lifting slots opened on both sides of the supporting frame, two limit sliders are fixedly installed on the detection frame, and the two limit sliders are respectively clamped and installed in the two lifting slots, two clamping holes are opened in the detection frame, and positioning pins are threadedly installed in the two clamping holes, and a plurality of positioning holes matching the two positioning pins are opened on the supporting frame.

[0013] Preferably, the glue coating mechanism includes a movable limiting plate fixedly mounted on the round rod, a storage cylinder for storing sealant is slidably mounted on the movable limiting plate, a piston disk is slidably mounted in the storage cylinder, and a glue squeezing rod is slidably mounted between the piston disk and the storage cylinder, a liquid guide tube and a liquid replenishing tube are fixedly connected in the storage cylinder, and a glue coating roller is rotatably connected on the liquid guide tube, a glue absorbing sponge column cooperating with the liquid guide tube is fixedly mounted in the glue coating roller, and a plurality of coating holes for penetrating the sealant are provided on the glue coating roller.

[0014] Preferably, the spray mechanism includes a spray water tank fixedly mounted on the side of the supporting frame, a water pump for spraying water mist is arranged in the spray water tank, a heating net for heating water is arranged in the spray water tank, a gooseneck spray pipe with flexible adjustment of the spray angle is arranged on the spray water tank, and a temperature and humidity sensor for detecting the ambient temperature and humidity is arranged on the supporting frame.

[0015] Preferably, the force-applying mechanism includes two hydraulic push rods fixedly installed between the detection base and the support frame for applying pulling force, a lifting plate is fixedly installed on the upper parts of the two hydraulic push rods, and two telescopic limit plates are fixedly installed between the upper end of the lifting plate and the support frame, and two folding buffer belts that cooperate with the lifting plate and play a buffering role are fixedly installed in the support frame.

[0016] Preferably, the auxiliary mechanism includes a force-applying column slidably mounted on the lower part of the lifting plate, a bending shaft is rotatably mounted on the lower part of the force-applying column, a threaded engaging rod is rotatably mounted on the lower part of the bending shaft, and the upper base is engaged and mounted on the lower part of the threaded engaging rod.

[0017] Preferably, the upper base and the lower base are both provided with a plurality of strip grooves, which can increase the bonding contact area between the upper base, the lower base and the sealant, and increase the bonding strength between the sealant and the upper base, the lower base.

[0018] A method for detecting the bonding performance of a silane-modified polyurethane sealant, used in the above-mentioned detection device, comprises the following steps:

[0019] S1, respectively install the lower base and the upper base into the control and positioning part and the force detection part, and adjust the height position of the upper base through the force mechanism in the force detection part so that it is close to the lower base for easy glue coating;

[0020] S2, by controlling the gluing mechanism in the positioning part, the upper surface of the lower base plate and the upper surface of the upper base plate are evenly coated with glue at the same time, and after the gluing is completed, the upper base plate is driven by the force applying mechanism to move downward to fit with the lower base plate, and a stable pressure is applied to the lower base plate;

[0021] S3, start the spray mechanism in the control positioning part and the lower base plate and the upper base plate electric heating wire to heat the sealant between the lower base plate and the upper base plate, and control the temperature and humidity near the lower base plate and the upper base plate through the spray mechanism, and control the temperature to between 30 degrees Celsius and 40 degrees Celsius and the humidity to more than 70%, so as to accelerate the curing process of the sealant;

[0022] S4, after the sealant is completely cured, the force applying mechanism in the force applying detection unit is started to apply a stable upward pulling force to the upper base, and the upward pulling force is evenly increased over time until the upper base and the lower base are completely separated, the peak upward pulling force is recorded and the adhesive peel strength of the sealant is calculated according to the formula;

[0023] S5, replace the upper base and the lower base, clean them, and then reinstall them and repeat steps S1-S3. After the sealant is cured, adjust the deflection angle of the lower base and the upper base by adjusting the positioning adjustment component in the positioning part, and then repeat step S4 until the upper base and the lower base are completely separated, record the peak upward pulling force, and determine the peeling strength of the sealant at different angles after multiple experiments;

[0024] S6. Repeat steps S1-S5. During the experiment, adjust the external temperature and humidity of the upper and lower base plates during the test by adjusting the spray mechanism in the positioning part, so as to simulate whether the adhesive peel strength of the sealant changes when it is in different external temperature or humidity environments.

[0025] The present invention provides a device and method for detecting the bonding performance of silane-modified polyurethane sealant, which has the following beneficial effects:

[0026] 1. When testing the sealant, this detection device can quickly and evenly complete the application of the sealant on the upper base and the lower base, and apply a stable extrusion force between the two after application to make the upper base and the lower base tightly bonded. It can also promote the curing of the sealant by humidifying and heating the upper base and the lower base, thereby improving the detection efficiency.

[0027] 2. When testing the sealant, this detection device can gradually apply a stable upward pulling force to the upper base after the sealant has been cured until the upper base is separated from the lower base. At this time, the peak pulling force during separation is the maximum peeling force of the sealant in the vertical state. The adhesive peeling strength of the sealant can be quickly calculated based on the peeling formula.

[0028] 3. When testing the sealant, this detection device can flexibly change the overall deflection angle between the upper base plate, the lower base plate and the vertical direction, so that the sealant between the upper base plate and the lower base plate at different inclination angles can be stretched and peeled off, and whether the bonding strength of the sealant at different angles is different and the amount of change can be determined.

[0029] 4. When testing the sealant, the detection device can quickly change the external temperature and humidity environment of the sealant through the cooperation of the spray mechanism and perform a bonding strength test, thereby simulating whether the bonding strength of the sealant changes and the amount of change under different temperatures and humidities in reality.

[0030] In summary, the present invention can quickly complete the application, adhesion and curing of the sealant, improve the detection efficiency, and can detect the adhesive peel strength of the sealant at different deflection angles. At the same time, the external temperature and humidity of the sealant can be changed during the detection, so as to detect whether the adhesive strength of the sealant in different external environments changes and the amount of change. The detection variables are more and the detection results are highly accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings, wherein:

[0032] Figure 1 This is a structural schematic diagram of a device and method for detecting the bonding performance of a silane-modified polyurethane sealant proposed by the present invention;

[0033] Figure 2 for Figure 1 Schematic diagram of the structure after rotating a certain angle;

[0034] Figure 3 It is a schematic diagram of the upper structure of the support frame in the present invention;

[0035] Figure 4 It is a schematic diagram of the internal structure of the support frame in the present invention;

[0036] Figure 5 It is a schematic diagram of the upper structure of the detection frame and the force-applying column in the present invention;

[0037] Figure 6 for Figure 5 Schematic diagram of structural decomposition;

[0038] Figure 7 It is a structural cross-sectional view of the detection frame in the present invention;

[0039] Figure 8 for Figure 5 A cross-sectional view of the upper structure of the storage cylinder and the glue coating roller;

[0040] Fig. 9 A diagram showing the state changes of the upper base plate, the lower base plate and the upper structure thereof when the peeling test is performed in the present invention;

[0041] Fig.10 for Fig. 9 Rear view of.

[0042] In the figure: 1 detection base, 2 control console, 3 support frame, 4 spray water tank, 5 detection frame, 6 hydraulic push rod, 7 lifting plate, 8 folding buffer belt, 9 positioning pin, 10 positioning hole, 11 telescopic limit plate, 12 gooseneck spray tube, 13 limit slider, 14 control handle, 15 force column, 16 hexagonal limit column, 17 placement plate, 18 storage cylinder, 19 bending shaft, 20 upper base plate, 21 glue coating roller, 22 lower base plate, 23 movable limit plate, 24 threaded positioning rod, 25 hexagonal hole, 26 round hole, 27 piston plate, 28 glue absorption sponge column, 29 liquid guide tube, 30 liquid infusion tube, 31 round rod, 32 strip groove, 33 glue squeezing rod, 34 threaded clamping rod, 35 clamping hole. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0044] Embodiment 1

[0045] Reference Figure 1-Figure 2 A silane-modified polyurethane sealant adhesive performance testing device comprises a testing base 1, a force detection part and a regulating and positioning part, wherein the regulating and positioning part is used for applying the silane-modified polyurethane sealant and realizing the free regulation of the testing environment, and the force detection part can cooperate with the regulating and positioning part to test the adhesive performance of the sealant;

[0046] A control console 2 is provided on the detection base 1. The control console 2 is used to control the operation and opening and closing states of the regulating and positioning part and the force detection part, and to calculate and display the detection results. A plurality of groups of sensors cooperating with the force detection part and the regulating and positioning part are provided in the control console 2. The peak tensile force applied by the force detection part to the sealant during detection can be recorded, the bonding strength can be automatically calculated, and the temperature during the sealant detection can be monitored and regulated.

[0047] Embodiment 2

[0048] Reference Figure 2-Figure 8 The difference between this embodiment and the first embodiment is that the positioning control unit includes a positioning control component provided with a lower base plate 22, a gluing mechanism and a spraying mechanism;

[0049] The positioning and regulating component is used to install the lower base plate 22 and adjust its deflection angle. The positioning and regulating component includes a support frame 3 fixedly mounted on the detection base 1. The detection frame 5 is installed on the support frame 3 through a lifting mechanism. The lifting mechanism includes two lifting slides opened on both sides of the support frame 3. Two limit sliders 13 are fixedly mounted on the detection frame 5, and the two limit sliders 13 are respectively clamped and installed in the two lifting slides. Two clamping holes 35 are opened in the detection frame 5, and the two clamping holes 35 are both threadedly installed with positioning pins 9, and a plurality of positioning holes 10 matching the two positioning pins 9 are opened on the support frame 3;

[0050] The detection frame 5 can slide vertically on the support frame 3, so that the height of the detection frame 5 in the support frame 3 can be adjusted, so as to adapt to base plates of different thicknesses or lengths, so as to be used to detect the adhesion of sealants with different surface areas. It can also be used to install rods of different heights, so as to detect the adhesion of the sealant between two rods bonded with sealants. After the height of the detection frame 5 is adjusted, the two positioning pins 9 can be rotated to pass through the engaging holes 35 in the detection frame 5 and then engage with the positioning holes 10 at the corresponding positions in the support frame 3, so as to fix the height position of the detection frame 5 so that it remains stable during detection.

[0051] In a further embodiment, a hexagonal hole 25 and a round hole 26 are provided in the detection frame 5, and the hexagonal hole 25 is connected to the round hole 26, a hexagonal limit column 16 is slidably mounted in the hexagonal hole 25, a round rod 31 is slidably mounted in the round hole 26, and the round rod 31 is fixedly mounted on the hexagonal limit column 16, and a control handle 14 is fixedly mounted on the hexagonal limit column 16;

[0052] The round rod 31 and the hexagonal limiting column 16 are integrally engaged in the detection frame 5. When the operator moves the control handle 14 outward, the hexagonal limiting column 16 and the round rod 31 will be driven to move outward as a whole, so that the hexagonal limiting column 16 is separated from the hexagonal hole 25 and thus engaged. At this time, the hexagonal limiting column 16 and the round rod 31 can be rotated as a whole, so that the overall angle of the round rod 31 and its upper structure can be adjusted, so as to facilitate the bonding performance test of the sealant at different angles. After the angle is adjusted, the hexagonal limiting column 16 can be moved inward to be engaged into the hexagonal hole 25 again, and the engaging positioning can be completed. At this time, the hexagonal limiting column 16, the round rod 31 and its upper structure cannot be rotated, so that the whole remains stable during detection.

[0053] A placement plate 17 is fixedly mounted on the round rod 31, a threaded positioning rod 24 is fixedly mounted on the placement plate 17, and a lower base plate 22 is threadedly mounted on the threaded positioning rod 24. The installation can be completed by threading the lower base plate 22 into the threaded positioning rod 24. After the inspection is completed, the lower base plate 22 can be quickly removed and the sealant thereon can be cleaned, and a new lower base plate 22 can be installed after disassembly, and the inspection can be started again.

[0054] In a further embodiment, the spray mechanism is used to accelerate the curing of the sealant and change the detection environment. The spray mechanism includes a spray water tank 4 fixedly mounted on the side of the support frame 3. A water pump for spraying water mist is arranged in the spray water tank 4. A heating net for heating water is arranged in the spray water tank 4. A gooseneck spray pipe 12 with a flexibly adjustable spray angle is arranged on the spray water tank 4. When the water pump in the spray water tank 4 is started, the water in the spray water tank 4 will be sprayed out in a mist form through the gooseneck spray pipe 12. The heating net can be started to heat the water in the spray water tank 4, so that the gooseneck spray pipe 12 can spray hot mist containing heat.

[0055] A temperature and humidity sensor for detecting the ambient temperature and humidity is provided on the support frame 3. The high-temperature mist sprayed by the gooseneck spray tube 12 can be directly sprayed near the lower base plate 22, so as to heat and humidify the air near the lower base plate 22. Under the monitoring and control of the temperature and humidity sensor, the temperature and humidity of the nearby air are adjusted to a temperature between 30 degrees Celsius and 40 degrees Celsius and a humidity of more than 70%. This is the most suitable stability for the curing of silane-modified polyurethane sealant, so that it can complete the curing at the fastest speed, thereby reducing its curing time, thereby increasing the efficiency of detection.

[0056] Embodiment 3

[0057] Reference Figure 2-Figure 6 as well as Figure 9-10 , the technical solution of this embodiment is different from that of the second embodiment in that: the force detection unit includes a force mechanism and an auxiliary mechanism, and an upper base plate 20 is arranged in the auxiliary mechanism;

[0058] The force-applying mechanism is used to apply a stable pulling force to the upper base plate 20 and the lower base plate 22 after the sealant is applied and to detect the bonding performance of the sealant. The force-applying mechanism includes two hydraulic push rods 6 fixedly installed between the detection base 1 and the support frame 3 for applying a pulling force. A lifting plate 7 is fixedly installed on the upper part of the two hydraulic push rods 6. When the hydraulic push rods 6 are started, the lifting plate 7 will be driven to move vertically up and down in the support frame 3.

[0059] Two telescopic limit plates 11 are fixedly installed between the upper end of the lifting plate 7 and the supporting frame 3, and two folding buffer belts 8 that cooperate with the lifting plate 7 and play a buffering role are fixedly installed in the supporting frame 3. The two telescopic limit plates 11 cooperate with the folding buffer belts 8 to play the role of limiting and buffering the lifting plate 7, so that it can be stably lifted and lowered in the supporting frame 3.

[0060] The auxiliary mechanism includes a force-applying column 15 slidably mounted on the lower part of the lifting plate 7, a bending shaft 19 is rotatably mounted on the lower part of the force-applying column 15, and a threaded clamping rod 34 is rotatably mounted on the lower part of the bending shaft 19, and the upper base plate 20 is clamped and mounted on the lower part of the threaded clamping rod 34;

[0061] The upper base 20 can be quickly and stably installed on the lower part of the threaded locking rod 34, and the upper and lower parts of the bending axis 19 are rotatably connected to the threaded locking rod 34 and the force column 15 respectively, so that the upper base 20 can be adaptively rotated when the upper base 20 is deflected as a whole under the action of the lower base 22, so that the upper base 20 can rotate smoothly without getting stuck.

[0062] In a further embodiment, the glue coating mechanism is used to evenly apply the sealant between the upper base plate 20 and the lower base plate 22, and the glue coating mechanism includes a movable limiting plate 23 fixedly mounted on a round rod 31, a storage cylinder 18 for storing the sealant is slidably mounted on the movable limiting plate 23, a piston disk 27 is slidably mounted in the storage cylinder 18, and a glue squeezing rod 33 is slidably mounted between the piston disk 27 and the storage cylinder 18, a liquid guide tube 29 and a liquid replenishing tube 30 are fixedly connected in the storage cylinder 18, and a glue coating roller 21 is rotatably connected to the liquid guide tube 29, a glue absorbing sponge column 28 matched with the liquid guide tube 29 is fixedly mounted in the glue coating roller 21, and a plurality of coating holes for penetrating the sealant are provided on the glue coating roller 21;

[0063] After the lower base plate 22 and the upper base plate 20 are installed, the position of the upper base plate 20 can be adjusted by the force-applying mechanism, so that the upper base plate 20 is moved to the upper part of the glue coating roller 21, so that the upper and lower parts of the glue coating roller 21 are respectively fitted with the upper base plate 20 and the lower base plate 22. At this time, the glue squeezing rod 33 can be pushed to drive the piston plate 27 in the storage cylinder 18 to move. The movement of the piston plate 27 will squeeze the sealant in the storage cylinder 18 so that it is pressed into the glue absorbing sponge column 28 in the glue coating roller 21 through the liquid guide tube 29. When the sealant in the glue absorbing sponge column 28 gradually increases, it will gradually seep out and seep out through the multiple glue coating holes on the glue coating roller 21.

[0064] By moving the storage cylinder 18 to make it slide back and forth horizontally on the movable limiting plate 23, the glue coating roller 21 can be driven to roll back and forth between the upper base plate 20 and the lower base plate 22, so that the sealant inside can seep out through the multiple glue coating holes during the reciprocating rolling process and adhere to the surfaces of the upper base plate 20 and the lower base plate 22 respectively. After a certain period of application, the sealant can be evenly applied to the upper base plate 20 and the lower base plate 22 at the same time, and the application efficiency is more uniform;

[0065] A plurality of strip grooves 32 are provided on the upper base 20 and the lower base 22. The plurality of strip grooves 32 can increase the bonding contact area between the upper base 20, the lower base 22 and the sealant, making the contact between the upper base 20, the lower base 22 and the sealant tighter, thereby increasing the bonding strength between the sealant and the upper base 20, the lower base 22.

[0066] Both the upper base 20 and the lower base 22 are provided with heating wires for heating the sealant. After the sealant is applied, the upper base 20 can be driven downward by the force-applying mechanism to make it squeezed and fit with the lower base 22, and a stable squeezing force is applied to the upper base 20 and the lower base 22. At the same time, the heating wires in the upper base 20 and the lower base 22 are started to heat them, so as to increase the temperature of the sealant between the two. At the same time, the spray mechanism is started to spray, so as to increase the temperature and humidity of the external environment, so as to increase the curing speed of the sealant between the upper base 20 and the lower base 22.

[0067] In a further embodiment, after the sealant between the upper base plate 20 and the lower base plate 22 is cured, the force-applying mechanism can be started to apply a stable upward pulling force to the upper base plate 20, and the upward pulling force can be evenly increased over time until the upper base plate 20 and the lower base plate 22 are completely separated. At this time, the sealant between the two is pulled apart. At this time, the peak upward pulling force is recorded. This peak upward pulling force is the maximum pulling force for the sealant to separate. The bonding peel strength of the sealant in the vertical direction can be calculated according to the formula and displayed in real time in the console 2;

[0068] The specific formula for sealant peel strength is: R 胶 =(X 基 / S 基 )×10 3

[0069] Where: R 胶 --Adhesion peel strength of sealant (MPa);

[0070] X 基 --Maximum peak force during peeling (KN);

[0071] S 基 --Contact surface area of ​​upper base plate 20 and lower base plate 22 (mm 2 );

[0072] After the initial test is completed, the upper base plate 20 and the lower base plate 22 can be disassembled and replaced, and the above steps are repeated to calculate the sealing strength of the sealant multiple times, and finally calculate the average value to make the calculation result more accurate.

[0073] In a further embodiment, after the sealant peel strength test in the vertical direction is completed, the above-mentioned glue curing step is repeated, and the inclination angle of the lower base plate 22 is adjusted by the positioning and regulating component. Since the lower base plate 22 and the upper base plate 20 are fixed by the sealant, the upper base plate 20 will deflect synchronously with the lower base plate 22 under the action of the auxiliary mechanism. At this time, the sealant angle between the upper base plate 20 and the lower base plate 22 will change, and then the upper base plate 20 is subjected to an upward pulling force by the force applying mechanism until it is separated from the lower base plate 22, and then the peak pulling force X is adjusted. 角1 Record and calculate R 角1 Repeat the above steps, calculate different peak tensile force data by continuously changing the angle between the upper base plate 20 and the lower base plate 22, and calculate the bonding peel strength (R 角1 , R 角2 , R 角3 , R 角4 ....), so as to judge whether the bonding strength is the same at different angles, and compare it with the vertical bonding peel strength to judge whether the peel bonding strength of the sealant is related to the angle, and the deviation value of different bonding strengths, so as to judge the relationship between bonding strength and deflection angle.

[0074] When conducting vertical peel strength and deflection peel strength tests, the air near the lower base plate 22 and the upper base plate 20 can be heated and humidified through a spray mechanism, thereby simulating the changes in the external temperature and humidity of the sealant under actual conditions by changing the temperature and humidity of the external environment. The peel strength of the sealant can be tested by continuously changing the temperature and humidity while keeping the vertical position and angle unchanged, thereby determining whether the temperature and humidity have an impact on the peeling bonding strength of the sealant, and determining the extent of the impact of the temperature and humidity, thereby calculating the optimal temperature and humidity for using the sealant.

[0075] The embodiment of the present invention also provides a method for detecting the bonding performance of a silane-modified polyurethane sealant, which is used in the above-mentioned detection device and comprises the following steps:

[0076] S1, respectively install the lower base plate 22 and the upper base plate 20 into the regulating and positioning part and the force detection part, and adjust the height position of the upper base plate 20 through the force mechanism in the force detection part so that it is close to the lower base plate 22 for easy glue coating;

[0077] S2, by controlling the gluing mechanism in the positioning part, the upper surface of the lower base plate 22 and the upper surface of the upper base plate 20 are evenly coated with glue at the same time, and after the gluing is completed, the upper base plate 20 is driven by the force applying mechanism to move downward to fit with the lower base plate 22, and a stable pressure is applied to the lower base plate 22;

[0078] S3, start the spray mechanism in the control and positioning part and the electric heating wires of the lower base plate 22 and the upper base plate 20 to heat the sealant between the lower base plate 22 and the upper base plate 20, and control the temperature and humidity near the lower base plate 22 and the upper base plate 20 through the spray mechanism, and control the temperature and humidity to 30 degrees Celsius to 40 degrees Celsius and 70% humidity or more, so as to accelerate the curing process of the sealant;

[0079] S4, after the sealant is completely cured, the force applying mechanism in the force applying detection unit is started to apply a stable upward pulling force to the upper base 20, and the upward pulling force is evenly increased over time until the upper base 20 and the lower base 22 are completely separated, and the peak upward pulling force is recorded and the adhesive peel strength of the sealant is calculated according to the formula;

[0080] S5, replace the upper base plate 20 and the lower base plate 22 and clean them, then reinstall and repeat steps S1-S3, after the sealant is cured, adjust the deflection angle of the lower base plate 22 and the upper base plate 20 by adjusting the positioning adjustment component in the positioning part, and then repeat step S4 until the upper base plate 20 and the lower base plate 22 are completely separated, record the peak upward pulling force, and determine the peeling strength of the sealant at different angles after multiple experiments;

[0081] S6. Repeat steps S1-S5. During the experiment, the external temperature and humidity of the upper base plate 20 and the lower base plate 22 during the test are adjusted by adjusting the spray mechanism in the positioning part to simulate whether the bonding peel strength of the sealant changes when it is in different external temperature or humidity environments.

[0082] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for detecting the bonding performance of a silane-modified polyurethane sealant, comprising a detection base (1), characterized in that: It also includes a force detection part and a regulating and positioning part, wherein the regulating and positioning part is used to apply the silane-modified polyurethane sealant and realize the free regulation of the detection environment, and the force detection part can cooperate with the regulating and positioning part to detect the bonding performance of the sealant; The regulating and positioning part comprises a positioning regulating component provided with a lower base plate (22), a glue coating mechanism and a spray mechanism, wherein the positioning regulating component is used for installing the lower base plate (22) and adjusting its deflection angle, and the spray mechanism is used for accelerating the curing of the sealant and changing the detection environment; The positioning and regulating component comprises a support frame (3) fixedly mounted on the detection base (1); a detection frame (5) is mounted on the support frame (3) via a lifting mechanism; a hexagonal hole (25) and a round hole (26) are provided in the detection frame (5); the hexagonal hole (25) is connected to the round hole (26); a hexagonal limiting column (16) is slidably mounted in the hexagonal hole (25); a round rod (31) is slidably mounted in the round hole (26); the round rod (31) is fixedly mounted on the hexagonal limiting column (16); a control handle (14) is fixedly mounted on the hexagonal limiting column (16); a placement plate (17) is fixedly mounted on the placement plate (17); a threaded positioning rod (24) is fixedly mounted on the placement plate (17); and a lower base plate (22) is threadedly mounted on the threaded positioning rod (24); The lifting mechanism comprises two lifting slots provided on both sides of the support frame (3); two limit sliders (13) are fixedly installed on the detection frame (5), and the two limit sliders (13) are respectively mounted in the two lifting slots; two engaging holes (35) are provided in the detection frame (5), and positioning pins (9) are threadedly installed in the two engaging holes (35); and a plurality of positioning holes (10) matching the two positioning pins (9) are provided on the support frame (3); The glue coating mechanism comprises a movable limiting plate (23) fixedly mounted on a round rod (31), a storage cylinder (18) for storing sealant being slidably mounted on the movable limiting plate (23), a piston disc (27) being slidably mounted in the storage cylinder (18), and a glue squeezing rod (33) being slidably mounted between the piston disc (27) and the storage cylinder (18), a liquid guide tube (29) and a liquid replenishing tube (30) being fixedly connected in the storage cylinder (18), and a glue coating roller (21) being rotatably connected on the liquid guide tube (29), a glue absorbing sponge column (28) matching with the liquid guide tube (29) being fixedly mounted in the glue coating roller (21), and a plurality of coating holes for penetrating sealant being provided on the glue coating roller (21); The spray mechanism comprises a spray water tank (4) fixedly mounted on the side of the support frame (3), a water pump for spraying water mist is arranged in the spray water tank (4), a heating net for heating water is arranged in the spray water tank (4), a gooseneck spray pipe (12) capable of flexibly adjusting the spray angle is arranged on the spray water tank (4), and a temperature and humidity sensor for detecting the ambient temperature and humidity is arranged on the support frame (3); The force detection unit comprises a force mechanism and an auxiliary mechanism, wherein an upper base plate (20) is arranged in the auxiliary mechanism, and a glue coating mechanism is used to evenly apply sealant between the upper base plate (20) and the lower base plate (22). Both the upper base plate (20) and the lower base plate (22) are provided with heating wires for heating the sealant, and the force mechanism is used to apply a stable pulling force to the upper base plate (20) and the lower base plate (22) after the sealant is applied, and detect the bonding performance of the sealant.

2. A silane-modified polyurethane sealant bonding performance detection device according to claim 1, characterized in that: The detection base (1) is provided with a control console (2), which is used to control the operation and opening and closing states of the positioning part and the force detection part, and to calculate and display the detection results.

3. A silane-modified polyurethane sealant bonding performance detection device according to claim 1, characterized in that: The force-applying mechanism comprises two hydraulic push rods (6) fixedly mounted between the detection base (1) and the support frame (3) for applying a pulling force, a lifting plate (7) being fixedly mounted on the upper parts of the two hydraulic push rods (6), and two telescopic limit plates (11) being fixedly mounted between the upper ends of the lifting plates (7) and the support frame (3), and two folding buffer belts (8) which cooperate with the lifting plates (7) and play a buffering role are fixedly mounted in the support frame (3).

4. A silane-modified polyurethane sealant bonding performance detection device according to claim 3, characterized in that: The auxiliary mechanism comprises a force-applying column (15) slidably mounted on the lower part of the lifting plate (7), a bending shaft (19) is rotatably mounted on the lower part of the force-applying column (15), a threaded engaging rod (34) is rotatably mounted on the lower part of the bending shaft (19), and an upper base plate (20) is engaged with the lower part of the threaded engaging rod (34).

5. A silane-modified polyurethane sealant bonding performance detection device according to claim 4, characterized in that: The upper base plate (20) and the lower base plate (22) are both provided with a plurality of strip grooves (32), and the plurality of strip grooves (32) can increase the bonding contact area between the upper base plate (20), the lower base plate (22) and the sealant, and increase the bonding strength between the sealant and the upper base plate (20), the lower base plate (22).

6. A method for detecting the bonding performance of a silane-modified polyurethane sealant, used in the detection device according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1, respectively installing the lower base plate (22) and the upper base plate (20) into the regulating and positioning part and the force detection part, and adjusting the height position of the upper base plate (20) by the force mechanism in the force detection part so that it is close to the lower base plate (22) to facilitate glue coating; S2, by controlling and regulating the gluing mechanism in the positioning part, the upper surface of the lower base plate (22) and the upper surface of the upper base plate (20) are evenly coated with glue at the same time, and after the gluing is completed, the upper base plate (20) is driven by the force applying mechanism to move downward to fit with the lower base plate (22), and a stable pressure is applied to the lower base plate (22); S3, starting the spray mechanism in the control and positioning part and the heating wires of the lower base plate (22) and the upper base plate (20) to heat the sealant between the lower base plate (22) and the upper base plate (20), and controlling the temperature and humidity of the air near the lower base plate (22) and the upper base plate (20) through the spray mechanism, and controlling the temperature to between 30 degrees Celsius and 40 degrees Celsius and the humidity to above 70%, so as to accelerate the curing process of the sealant; S4, after the sealant is completely cured, the force applying mechanism in the force applying detection unit is started to apply a stable upward pulling force to the upper base plate (20), and the upward pulling force is evenly increased over time until the upper base plate (20) and the lower base plate (22) are completely separated, and the peak upward pulling force is recorded and the adhesive peel strength of the sealant is calculated according to a formula; S5, replace the upper base plate (20) and the lower base plate (22), clean them, and then reinstall them and repeat steps S1-S3. After the sealant is cured, adjust the deflection angle of the lower base plate (22) and the upper base plate (20) by adjusting the positioning adjustment component in the positioning part, and then repeat step S4 until the upper base plate (20) and the lower base plate (22) are completely separated, record the peak upward pulling force, and determine the peel strength of the sealant at different angles after multiple experiments; S6. Repeat steps S1-S5. During the experiment, the external temperature and humidity of the upper base plate (20) and the lower base plate (22) during the test are adjusted by adjusting the spray mechanism in the positioning part, so as to simulate whether the adhesive peel strength of the sealant changes when it is in different external temperature or humidity environments.

Images