Equipment for detecting hydrolytic stability of composite antioxidant

Abstract

The utility model relates to the technical field of composite antioxidant detection, and discloses composite antioxidant hydrolytic stability detection equipment which comprises a detection table, an infrared heating block is arranged at the position, close to one side, of the top end of the detection table, and a placement plate is arranged at the position, close to the other side, of the top end of the detection table. A plurality of timers are arranged at the front end of the detection table, a detection assembly is arranged above the detection table, the detection assembly is provided with a detection reaction vessel, a mounting rod and a fixing rod, the fixing rod is fixedly mounted at the top end of the detection table through a fixing block, and the fixing rod is located behind an infrared heating block; according to the invention, hydrolysis data of the composite antioxidant in a sealed environment is detected through the detection assembly, different gases can be input during detection to detect hydrolysis conditions of the composite antioxidant under different gases, the use functionality is improved, the detection reaction vessel can be fixed at a certain position, and the influence on the detection stability is reduced.

Description

Technical Field

[0001] This utility model relates to the field of composite antioxidant testing technology, specifically a composite antioxidant hydrolysis stability testing device. Background Technology

[0002] Composite antioxidants are made by combining two or more different types or different varieties of the same type of antioxidant. For example, the combination of hindered phenolic antioxidants and phosphite antioxidants can exert a synergistic effect to improve antioxidant performance. They are widely used in polyethylene, polypropylene, polycarbonate, ABS resin and other petrochemical products. They can effectively inhibit the thermal degradation and oxidative degradation of polymers. They are soluble in organic solvents such as benzene, cyclohexane and ethyl acetate, but insoluble in water. After the composite antioxidant is produced, its hydrolytic performance needs to be tested.

[0003] Chinese patent provides a composite antioxidant hydrolysis stability testing device, publication number CN210332638U, which includes a base, with support plates embedded on both sides of the upper end of the base. Four support plates are provided, and a first fixing block is connected to the upper end of the support plate near the base. A hydrolysis rate testing mechanism is movably connected to the upper end of the first fixing block.

[0004] The above-mentioned testing equipment uses an infrared heater to keep one of the two side-by-side reaction vessels at room temperature while heating the other. This allows for the detection of the hydrolysis of composite antioxidants at different temperatures and also enables the hydrolysis detection of composite antioxidants in different states.

[0005] However, the structure of the petri dish is relatively simple, making it difficult to seal the top surface. This makes it impossible to test the hydrolytic stability of antioxidants under sealed conditions. In addition, the lack of fixation measures in the petri dish makes it easy to be moved during the rotation of the stirring blade, affecting the stability of the test. Utility Model Content

[0006] The purpose of this invention is to provide a composite antioxidant hydrolysis stability testing device, which can effectively solve the problems in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A composite antioxidant hydrolysis stability testing device includes a testing platform, an infrared heating block is provided on one side of the top of the testing platform, a placement plate is provided on the other side of the top of the testing platform, a number of timers are provided at the front end of the testing platform, and a testing component is provided above the testing platform.

[0009] The detection assembly includes a detection reaction vessel, a mounting rod, and a fixing rod. The fixing rod is fixedly installed on the top of the detection stage via a fixing block, and is located behind the infrared heating block. A fixing ring is slidably installed on the outer ring of the fixing rod, and a locking knob is provided at the connection between the fixing rod and the fixing ring. The detection reaction vessel is installed inside the fixing ring, and the bottom surface of the detection reaction vessel is in contact with the top surface of the infrared heating block. Several mounting seats that are compatible with the mounting rod are provided at the top of the detection stage and behind the fixing rod. The mounting rod is installed on the top of the detection stage via the mounting seats. A mounting block is slidably installed on the outer ring of the mounting rod, and a connecting rod is fixedly connected to the bottom front position of the mounting block. A sealing cover plate that is compatible with the detection reaction vessel is slidably installed on the outer ring of the connecting rod.

[0010] Preferably, an agitator motor is fixedly installed at the top of the mounting block, a rotating rod is rotatably installed inside the connecting rod, the drive shaft of the agitator motor passes through the upper and lower ends of the mounting block and is fixedly connected to the top of the rotating rod, and an agitator plate is fixedly connected to the bottom end of the rotating rod.

[0011] Preferably, the stirring plate does not contact the inner wall of the reaction vessel, a bearing is provided at the connection between the drive shaft of the stirring motor and the mounting block, and the drive shaft of the stirring motor is rotatably connected to the mounting block through the bearing.

[0012] Preferably, the center points of the connecting rod and the detection reaction vessel are on the same vertical line, the outer ring of the mounting rod is provided with external threads, and the outer ring of the mounting rod and the upper and lower ends of the mounting block are threaded with adjusting nuts.

[0013] Preferably, a pressure relief solenoid valve is provided on one side of the top of the sealing cover, and a plurality of gas supply solenoid valves are provided on the other side of the top of the sealing cover.

[0014] Preferably, an electric telescopic rod is installed at the top of the mounting block, and the push rod end of the electric telescopic rod is connected to the top of the sealing cover plate.

[0015] Preferably, the detection components are symmetrically arranged in two sets, and the infrared heating block and the top surface of the placement plate are on the same horizontal plane.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This invention, by setting up a detection component in conjunction with a detection reaction vessel, allows for the sealing of the reaction vessel by a sealing cover during the hydrolysis detection of composite antioxidants, thus enabling the detection of hydrolysis data under a sealed environment. Simultaneously, by using a gas supply solenoid valve and a pressure relief solenoid valve in conjunction with the reaction vessel, different gases can be input during detection to assess the hydrolysis of the composite antioxidants under different gas conditions, thereby improving its functionality.

[0018] By using a combination of a fixed rod, a fixed ring, and a locking knob, the test reaction vessel can be fixed in a certain position during the test, preventing it from being moved during the test and reducing the impact on the stability of the test. Furthermore, by using a combination of a mounting rod, a mounting base, and a mounting block, multiple test reaction vessels can be added as needed for testing. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a composite antioxidant hydrolysis stability testing device according to an embodiment of this utility model;

[0020] Figure 2 This is a cross-sectional view of the internal structure of the detection reaction vessel and connecting rod in an embodiment of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the detection reaction vessel and the sealing cover plate in an embodiment of this utility model.

[0022] In the diagram: 1. Detection platform; 2. Infrared heating block; 3. Timer; 4. Detection component; 5. Detection reaction vessel; 6. Fixing ring; 7. Fixing rod; 8. Mounting rod; 9. Mounting block; 10. Connecting rod; 11. Sealing cover plate; 12. Electric telescopic rod; 13. Stirring motor; 14. Rotating rod; 15. Stirring plate; 16. Pressure relief solenoid valve; 17. Gas supply solenoid valve. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1

[0025] Combination Figures 1-3 A composite antioxidant hydrolysis stability testing device includes a testing platform 1, an infrared heating block 2 is provided on one side of the top of the testing platform 1, a placement plate is provided on the other side of the top of the testing platform 1, several timers 3 are provided at the front end of the testing platform 1, and a testing component 4 is provided above the testing platform 1.

[0026] See Figure 2Furthermore, the detection component 4 has a detection reaction dish 5, a mounting rod 8, and a fixing rod 7. The fixing rod 7 is fixedly installed on the top of the detection stage 1 by a fixing block, and the fixing rod 7 is located behind the infrared heating block 2. A fixing ring 6 is slidably installed on the outer ring of the fixing rod 7, and a locking knob is provided at the connection between the fixing rod 7 and the fixing ring 6. The detection reaction dish 5 is installed inside the fixing ring 6, and the bottom surface of the detection reaction dish 5 is in contact with the top surface of the infrared heating block 2. The detection component 4 is symmetrically arranged in two sets, and the top surface of the infrared heating block 2 and the placement plate are at the same horizontal plane.

[0027] Specifically, the antioxidant to be hydrolyzed can be placed in the test reaction dish 5, then appropriate water can be added, and the timing button at timer 3 can be pressed to perform hydrolysis testing on the antioxidant. During the test, the fixing ring 6 is placed around the outer ring of the test reaction dish 5. The position of the fixing ring 6 can be fixed by tightening the locking knob at the connection between the fixing ring 6 and the fixing rod 7, thereby fixing the position of the test reaction dish 5 and restricting its movement. This prevents the test reaction dish 5 from being moved during the testing of the composite antioxidant, thus improving the stability of the test.

[0028] Example 2

[0029] See Figure 2 and Figure 3 Furthermore, based on Embodiment 1, a plurality of mounting seats adapted to the mounting rod 8 are provided at the top of the detection platform 1 and behind the fixed rod 7. The mounting rod 8 is mounted on the top of the detection platform 1 through the mounting seats. A mounting block 9 is slidably mounted on the outer ring of the mounting rod 8. A connecting rod 10 is fixedly connected to the bottom front position of the mounting block 9. A sealing cover plate 11 adapted to the detection reaction vessel 5 is slidably mounted on the outer ring of the connecting rod 10. A stirring motor 13 is fixedly mounted on the top of the mounting block 9. A rotating rod 14 is rotatably mounted inside the connecting rod 10. The drive shaft of the stirring motor 13 passes through the upper and lower ends of the mounting block 9 and is fixedly connected to the top of the rotating rod 14. A stirring plate 1 is fixedly connected to the bottom end of the rotating rod 14. 5. The stirring plate 15 does not contact the inner wall of the detection reaction vessel 5. The drive shaft of the stirring motor 13 is connected to the mounting block 9 with a bearing, and the drive shaft of the stirring motor 13 is rotatably connected to the mounting block 9 through the bearing. The center point of the connecting rod 10 and the detection reaction vessel 5 are on the same vertical line. The outer ring of the mounting rod 8 is provided with an external thread. The outer ring of the mounting rod 8 and the upper and lower ends of the mounting block 9 are threaded with adjusting nuts. A pressure relief solenoid valve 16 is provided on one side of the top of the sealing cover plate 11. Several gas supply solenoid valves 17 are provided on the other side of the top of the sealing cover plate 11. An electric telescopic rod 12 is installed on the top of the mounting block 9. The push rod end of the electric telescopic rod 12 is connected to the top of the sealing cover plate 11.

[0030] Specifically, during the testing process, the connecting rod 10 can be activated, and the push rod of the connecting rod 10 extends, which can drive the sealing cover plate 11 to descend, thereby sealing the top surface of the timer 3. This can simulate the hydrolysis of the antioxidant under sealed conditions. At the same time, different gas supply solenoid valves 17 can be pre-connected to external gas supply pipes during sealing, so that different gases can be introduced into the test reaction vessel 5 during subsequent testing to simulate the hydrolysis of the antioxidant in the test reaction vessel 5 under different gases. This provides high flexibility. At the same time, a pressure relief solenoid valve 16 is provided for pressure relief protection. During the testing process, the stirring motor 13 can be activated as needed. The drive shaft of the stirring motor 13 rotates, which drives the stirring plate 15 to stir the antioxidant in the test reaction vessel 5 to simulate the hydrolysis of the antioxidant under the influence of external forces. This provides high functionality.

[0031] In actual operation, the antioxidant to be hydrolyzed can be placed in the test reaction dish 5, then appropriate water can be added, and the timing button at timer 3 can be pressed at the same time to perform hydrolysis test on the antioxidant. During the test, the fixing ring 6 is placed on the outer ring of the test reaction dish 5. Afterwards, the position of the fixing ring 6 can be fixed by tightening the locking knob at the connection between the fixing ring 6 and the fixing rod 7, thereby fixing the position of the test reaction dish 5, which can limit the movement of the test reaction dish 5 and prevent the test reaction dish 5 from being moved during the test of composite antioxidants, so as to improve the test stability.

[0032] During the testing process, the connecting rod 10 can be activated, and the push rod of the connecting rod 10 can extend, which can drive the sealing cover plate 11 to descend, so as to seal the top surface of the timer 3, thereby simulating the hydrolysis of the antioxidant under sealed conditions.

[0033] Meanwhile, during sealing, different gas supply solenoid valves 17 can be pre-connected to external gas supply pipes so that different gases can be introduced into the test reaction vessel 5 during subsequent testing to simulate the hydrolysis of antioxidants in the test reaction vessel 5 under different gases, which provides high flexibility in use.

[0034] Meanwhile, pressure relief is provided by the pressure relief solenoid valve 16. During the test, the stirring motor 13 can be started according to the actual situation. The drive shaft of the stirring motor 13 rotates, which drives the stirring plate 15 to stir the antioxidant in the test reaction dish 5 to simulate the hydrolysis of the antioxidant under the influence of external force. It has high functionality.

[0035] Furthermore, during use, an infrared heating block 2 is installed on one side of the top of the detection station 1. By activating the infrared heating block 2, the detection reaction dish 5 on it can be heated, and the antioxidant can be hydrolyzed by heating, so as to compare the data with the hydrolysis data at room temperature.

[0036] The mounting rod 8 is fixed on the mounting base on the testing table 1. At the same time, after loosening the locking knob, the locking of the fixing ring 6 can be released, so that the number of testing reaction dishes 5 can be increased or decreased as needed. It is highly flexible in use. When adjusting, it is necessary to ensure that the center point of the testing reaction dish 5 is on the same vertical line as the center point of the drive shaft of the stirring motor 13, and to ensure that the stirring plate 15 does not directly contact the inner wall of the testing reaction dish 5, so as to reduce the probability of damage during the testing process.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A composite antioxidant hydrolytic stability testing device, comprising a testing platform (1), wherein an infrared heating block (2) is disposed on one side of the top of the testing platform (1), and a placement plate is disposed on the other side of the top of the testing platform (1), and a plurality of timers (3) are disposed at the front end of the testing platform (1), characterized in that: A detection component (4) is provided above the detection station (1); The detection assembly (4) includes a detection reaction dish (5), a mounting rod (8), and a fixing rod (7). The fixing rod (7) is fixedly mounted on the top of the detection stage (1) by a fixing block, and the fixing rod (7) is located behind the infrared heating block (2). A fixing ring (6) is slidably mounted on the outer ring of the fixing rod (7), and a locking knob is provided at the connection between the fixing rod (7) and the fixing ring (6). The detection reaction dish (5) is installed inside the fixing ring (6), and the bottom surface of the detection reaction dish (5) is flush with the infrared heating block (2). The top surface of the block (2) is attached. At the top of the detection platform (1) and behind the fixed rod (7), there are several mounting seats that are compatible with the mounting rod (8). The mounting rod (8) is mounted on the top of the detection platform (1) through the mounting seats. The outer ring of the mounting rod (8) is slidably mounted with a mounting block (9). The bottom end of the mounting block (9) is fixedly connected with a connecting rod (10) at the front position. The outer ring of the connecting rod (10) is slidably mounted with a sealing cover plate (11) that is compatible with the detection reaction dish (5).

2. The composite antioxidant hydrolysis stability testing device according to claim 1, characterized in that: A stirring motor (13) is fixedly installed at the top of the mounting block (9), and a rotating rod (14) is rotatably installed inside the connecting rod (10). The drive shaft of the stirring motor (13) passes through the upper and lower ends of the mounting block (9) and is fixedly connected to the top of the rotating rod (14). A stirring plate (15) is fixedly connected to the bottom end of the rotating rod (14).

3. The composite antioxidant hydrolysis stability testing device according to claim 2, characterized in that: The stirring plate (15) does not contact the inner wall of the detection reaction vessel (5). The drive shaft of the stirring motor (13) is provided with a bearing at the connection between it and the mounting block (9). The drive shaft of the stirring motor (13) is rotatably connected to the mounting block (9) through the bearing.

4. The composite antioxidant hydrolysis stability testing device according to claim 3, characterized in that: The center points of the connecting rod (10) and the detection reaction vessel (5) are on the same vertical line. The outer ring of the mounting rod (8) is provided with an external thread. The outer ring of the mounting rod (8) and the upper and lower ends of the mounting block (9) are threaded with adjusting nuts.

5. The composite antioxidant hydrolysis stability testing device according to claim 1, characterized in that: A pressure relief solenoid valve (16) is provided on one side of the top of the sealing cover plate (11), and several gas supply solenoid valves (17) are provided on the other side of the top of the sealing cover plate (11).

6. The composite antioxidant hydrolysis stability testing device according to claim 1, characterized in that: An electric telescopic rod (12) is installed at the top of the mounting block (9), and the push rod end of the electric telescopic rod (12) is connected to the top of the sealing cover plate (11).

7. The composite antioxidant hydrolysis stability testing device according to claim 1, characterized in that: The detection components (4) are symmetrically arranged in two sets, and the infrared heating block (2) is on the same horizontal plane as the top surface of the placement plate.

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