Polyurethane adhesive water resistance detection device

Abstract

The utility model discloses a polyurethane adhesive water resistance detection device, and particularly relates to the field of chemical material detection equipment. The polyurethane adhesive water resistance detection device comprises a test water tank, a heat insulation plate is fixedly connected in the test water tank, an inner cavity of the test water tank is divided into a normal-temperature cavity and a variable-temperature cavity by the heat insulation plate, an electric heating element is arranged in the variable-temperature cavity, a lifting mechanism is arranged on the heat insulation plate, a pair of hanging frames is arranged on the lifting mechanism, and the electric heating element is arranged in the normal-temperature cavity. The pair of hanging frames are correspondingly arranged in the normal temperature cavity and the variable temperature cavity respectively, each hanging frame is provided with a telescopic assembly, each telescopic assembly is provided with a first mounting plate, a second mounting plate is arranged over the first mounting plate, and each hanging frame is provided with a second hydraulic rod used for driving the second mounting plate to ascend and descend. According to the utility model, the technical problems that the whole step operation of the water resistance test of the polyurethane adhesive is not coherent enough and is relatively tedious, the data is not comprehensive enough, and the detection efficiency is influenced are solved.

Description

Technical Field

[0001] The utility model relates to the field of chemical material detection equipment, and more specifically, to a polyurethane adhesive water resistance detection device. Background Art

[0002] Polyurethane adhesive refers to an adhesive containing carbamate groups (-NHCOO-) or isocyanate groups (-NCO) in the molecular chain. Polyurethane adhesives are mainly composed of ammonium isocyanate, polyols, hydrocarbon-containing polyethers, polyesters and epoxy resins, fillers, catalysts and solvents. It has many excellent properties such as high reactivity, curing at room temperature, and impact resistance. Polyurethane adhesives have strong adhesion, and the coating film has excellent wear resistance, water resistance and chemical resistance. It is mainly used in furniture, building materials and industrial printing inks. At present, in order to obtain the water resistance data of polyurethane adhesives, water resistance testing of polyurethane adhesives is required.

[0003] In the related art, when polyurethane adhesives are tested for water resistance, the materials to be bonded with the polyurethane adhesive are often placed in water and allowed to stand. The ester groups and other groups in the polyurethane molecular chain structure break and hydrolyze when exposed to water, and the bonding performance decreases. Adhesion can be used as an important criterion in water resistance test data. However, the entire process of water resistance testing of polyurethane adhesives is currently not coherent and cumbersome, and the data is not comprehensive, which affects the detection efficiency. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a polyurethane adhesive water resistance testing device. The technical problem to be solved by the utility model is that the entire step of the water resistance test of the polyurethane adhesive is not consistent enough and is relatively cumbersome, and the data is not comprehensive enough, which affects the detection efficiency.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a polyurethane adhesive water resistance detection device, comprising a test water tank, a heat insulation board is fixedly connected to the test water tank, the inner cavity of the test water tank is divided into a normal temperature cavity and a variable temperature cavity by the heat insulation board, the variable temperature cavity is provided with an electric heating element, a lifting mechanism is provided on the heat insulation board, a pair of hanging frames are provided on the lifting mechanism, the pair of hanging frames correspond to the normal temperature cavity and the variable temperature cavity respectively, each hanging frame is provided with a telescopic component, a mounting plate 1 is provided on the telescopic component, a mounting plate 2 is provided directly above the mounting plate 1, a hydraulic rod 2 for driving the mounting plate 2 to rise and fall is provided on the hanging frame, the opposite surfaces of the mounting plate 1 and the mounting plate 2 are both detachably connected with test pieces bonded with polyurethane adhesive, and a tension detection structure for sensing the tension of the mounting plate 2 is provided at the bottom of the hanging frame.

[0006] In a preferred embodiment, the test water tank is provided with a thermostat for controlling the temperature of the electric heating element.

[0007] In a preferred embodiment, a pair of drainage pipes respectively connected to the normal temperature chamber and the variable temperature chamber are fixedly passed through the test water tank.

[0008] In a preferred embodiment, the lifting mechanism includes a hydraulic rod 1 and a hanger fixedly connected to the output end of the hydraulic rod 1, and a pair of hanger frames are fixedly connected to the hanger.

[0009] In a preferred embodiment, a guide slide bar is fixedly connected to the side of the hanging frame, and the guide slide bar is slidably connected to the heat insulation board.

[0010] In a preferred embodiment, the telescopic assembly includes a T-shaped rod fixedly connected to the bottom of the hanging frame and a sleeve slidably connected to the T-shaped rod, and the mounting plate is fixedly connected to the sleeve.

[0011] In a preferred embodiment, the tension detection structure includes a tension detection device and a detection rod fixedly connected to the detection end of the tension detection device, the detection rod seals and passes through the hanging frame, and is fixedly connected to the bottom of the mounting plate, a sealing box is fixedly connected to the bottom of the hanging frame, and the tension detection device is fixedly connected to the sealing box.

[0012] Technical effects and advantages of the utility model:

[0013] The utility model discloses a polyurethane adhesive water resistance testing device. A test piece bonded with polyurethane adhesive is arranged between a first mounting plate and a second mounting plate. A second hydraulic rod drives the second mounting plate to press down the first mounting plate, thereby increasing the curing effect of the polyurethane adhesive in the test piece. The test pieces at the two locations are respectively placed in a normal temperature chamber and a variable temperature chamber, thereby providing a variety of test temperatures for comparison support, facilitating comparison of changes in the polyurethane molecular chain structure breaking and hydrolyzing when exposed to water, and improving data comprehensiveness. The second hydraulic rod provides tension for the second mounting plate, and a tension testing device can sense tension data of the polyurethane adhesive in the test piece. The tension data can then support the adhesion of water resistance testing. The integrated arrangement of the above structure effectively optimizes the process of polyurethane adhesive water resistance testing, is easy to operate, and has high testing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 It is a structural schematic diagram of the test water tank of the utility model.

[0017] Figure 3 It is a structural schematic diagram of the lifting mechanism, hanging frame, mounting plate 1 and mounting plate 2 of the utility model.

[0018] Figure 4 It is a structural schematic diagram of the hanging frame, the mounting plate, the telescopic assembly and the tension detection equipment of the utility model.

[0019] Figure 5 It is a structural schematic diagram of the telescopic component of the utility model.

[0020] The accompanying drawings are marked as follows: 1. test water tank; 2. insulation board; 3. electric heating element; 4. lifting mechanism; 41. hydraulic rod one; 42. hanger; 5. hanging frame; 6. telescopic assembly; 61. T-bar; 62. sleeve; 7. mounting plate one; 8. mounting plate two; 9. hydraulic rod two; 10. test piece; 11. tension detection device; 12. detection rod; 13. thermostat; 14. drain pipe; 15. guide strip; 16. sealing box. DETAILED DESCRIPTION

[0021] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Combined with reference Figure 1-Figure 5The utility model provides a polyurethane adhesive water resistance detection device, including a test water tank 1, a heat insulation board 2 is fixedly connected to the test water tank 1, the inner cavity of the test water tank 1 is divided into a normal temperature cavity and a variable temperature cavity by the heat insulation board 2, the inner wall of the variable temperature cavity in the present application can be treated with heat preservation, an electric heating element 3 is arranged in the variable temperature cavity, the electric heating element 3 can be heated by an electric heating rod, a lifting mechanism 4 is arranged on the heat insulation board 2, a pair of hanging frames 5 are arranged on the lifting mechanism 4, and the pair of hanging frames 5 correspond to the normal temperature cavity and the variable temperature cavity respectively, Each hanging frame 5 is provided with a telescopic component 6, a mounting plate 1 7 is provided on the telescopic component 6, a mounting plate 2 8 is provided directly above the mounting plate 1 7, a hydraulic rod 2 9 for driving the mounting plate 2 8 to rise and fall is provided on the hanging frame 5, the opposite surfaces of the mounting plate 1 7 and the mounting plate 2 8 are detachably connected with a test piece 10 bonded with polyurethane adhesive, the test piece 10 can be detachably connected to the mounting plate 1 7 and the mounting plate 2 8 respectively by screws, and a tension detection structure for sensing the tension of the mounting plate 2 8 is provided at the bottom of the hanging frame 5.

[0023] The test water tank 1 is provided with a thermostat 13 for controlling the temperature of the electric heating element 3 . The thermostat 13 can control the temperature of the electric heating element 3 to obtain water resistance testing requirements of different water temperatures.

[0024] A pair of drain pipes 14 respectively connected to the normal temperature chamber and the variable temperature chamber are fixedly passed through the test water tank 1. Valves can be provided on the drain pipes 14 to facilitate the discharge of water in the normal temperature chamber and the variable temperature chamber.

[0025] The lifting mechanism 4 includes a hydraulic rod 41 and a hanger 42 fixedly connected to the output end of the hydraulic rod 41, and a pair of hanging frames 5 are fixedly connected to the hanger 42. The hydraulic rod 41 can drive the hanging frame 5 and the structure on the hanging frame 5 to perform lifting actions so that the hanging frame 5 can realize water outlet and water entry actions in the test water tank 1.

[0026] A guide slide bar 15 is fixedly connected to the side of the hanging frame 5, and the guide slide bar 15 is slidably connected to the insulation board 2. The guide slide bar 15 slides on the insulation board 2 to improve the stability of the hydraulic rod 41 driving the hanging frame 5 to rise and fall.

[0027] The telescopic assembly 6 includes a T-shaped rod 61 fixedly connected to the bottom of the hanging frame 5 and a sleeve 62 slidably connected to the T-shaped rod 61. The mounting plate 7 is fixedly connected to the sleeve 62. In the present application, a slide groove for limiting the sliding of the T-shaped rod 61 is provided in the sleeve 62, and the telescopic assembly 6 is provided with at least two pairs of sleeves 62 and T-shaped rods 61. When the mounting plate 28 presses down the mounting plate 7, the sleeve 62 can provide bottom support for the mounting plate 7. When the mounting plate 28 pulls the mounting plate 7, the sleeve 62 can provide a linear guide for the mounting plate 7.

[0028] The tension detection structure includes a tension detection device 11 and a detection rod 12 fixedly connected to the detection end of the tension detection device 11. The detection rod 12 seals and penetrates the hanging frame 5 and is fixedly connected to the bottom of the mounting plate 7. A sealing box 16 is fixedly connected to the bottom of the hanging frame 5. The tension detection device 11 is fixedly connected in the sealing box 16. The position of the detection rod 12 can be sealed on the hanging frame 5 through a sealing ring. The setting of the sealing box 16 can provide waterproof protection for the position of the tension detection device 11. The tension detection device 11 can use a tensile gauge to detect tension.

[0029] Specifically, by installing the test piece 10 on the mounting plate 2 8 and the mounting plate 1 7, and coating the pair of test pieces 10 with polyurethane adhesive, the hanging frame 5 is in a non-water state, and then the mounting plate 2 8 can be controlled to be pressed down, and the sleeve 62 is fixed on the T-shaped rod 61 at this time. The downward pressure of the mounting plate 2 8 can increase the clamping of the test piece 10, which can promote the curing of the polyurethane adhesive. After the polyurethane adhesive is cured, the hanging frame 5 can be driven into the water by the hydraulic rod 1 41. By allowing the test pieces 10 at two locations to enter the normal temperature chamber and the variable temperature chamber at the same time, the subsequent comparison of the water resistance data of the polyurethane adhesive under different temperature water bodies can be facilitated, thereby improving the detection range of water resistance.

[0030] After the polyurethane adhesive to be cured has been static for a period of time, the test piece 10 can be lifted above the water body, and the hydraulic rod 1 41 is used to provide an upward pulling force for the mounting plate 2 8. At this time, the sleeve 62 can be adaptively moved on the T-bar 61, and the detection rod 12 can pull the detection end of the tension detection device 11. In this way, the cured polyurethane adhesive can support the water resistance detection through the tension test, which is convenient for obtaining the bonding performance of the ester group and other groups in the polyurethane molecular chain structure after breaking and hydrolyzing when exposed to water. Due to the integrated design of the entire water resistance detection device, the entire test step of the polyurethane adhesive can be directly implemented, which is easy to operate and meets the test requirements of rapid water resistance detection of polyurethane adhesive.

Claims

1. A polyurethane adhesive water resistance testing device, comprising a test water tank (1), characterized in that: The test water tank (1) is fixedly connected with a heat insulation board (2), the inner cavity of the test water tank (1) is divided into a normal temperature cavity and a variable temperature cavity by the heat insulation board (2), the variable temperature cavity is provided with an electric heating element (3), the heat insulation board (2) is provided with a lifting mechanism (4), the lifting mechanism (4) is provided with a pair of hanging frames (5), the pair of hanging frames (5) are respectively corresponding to the normal temperature cavity and the variable temperature cavity, each hanging frame (5) is provided with a telescopic component (6), the telescopic component A mounting plate 1 (7) is arranged on the component (6), a mounting plate 2 (8) is arranged directly above the mounting plate 1 (7), a hydraulic rod 2 (9) for driving the mounting plate 2 (8) to rise and fall is arranged on the hanging frame (5), the mounting plate 1 (7) and the mounting plate 2 (8) are both detachably connected to the opposite surfaces thereof with a test piece (10) bonded with a polyurethane adhesive, and a tension detection structure for sensing the tension of the mounting plate 2 (8) is arranged at the bottom of the hanging frame (5).

2. A polyurethane adhesive water resistance detection device according to claim 1, characterized in that: The test water tank (1) is provided with a temperature controller (13) for controlling the temperature of the electric heating element (3).

3. A polyurethane adhesive water resistance detection device according to claim 1, characterized in that: A pair of drainage pipes (14) are fixedly passed through the test water tank (1) and are respectively connected to the normal temperature chamber and the variable temperature chamber.

4. The polyurethane adhesive water resistance detection device according to claim 1, characterized in that: The lifting mechanism (4) comprises a hydraulic rod (41) and a hanger (42) fixedly connected to the output end of the hydraulic rod (41), and a pair of hanger frames (5) fixedly connected to the hanger (42).

5. The polyurethane adhesive water resistance detection device according to claim 1, characterized in that: A guide slide bar (15) is fixedly connected to the side of the hanging frame (5), and the guide slide bar (15) is slidably connected to the heat insulation board (2).

6. A polyurethane adhesive water resistance detection device according to claim 1, characterized in that: The telescopic assembly (6) comprises a T-shaped rod (61) fixedly connected to the inner bottom of the hanging frame (5) and a sleeve (62) slidably connected to the T-shaped rod (61), and the mounting plate (7) is fixedly connected to the sleeve (62).

7. A polyurethane adhesive water resistance detection device according to claim 1, characterized in that: The tension detection structure comprises a tension detection device (11) and a detection rod (12) fixedly connected to the detection end of the tension detection device (11); the detection rod (12) seals and penetrates the hanging frame (5) and is fixedly connected to the bottom of the mounting plate (7); a sealing box (16) is fixedly connected to the bottom of the hanging frame (5); and the tension detection device (11) is fixedly connected inside the sealing box (16).

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