Method and device for testing fatigue strength of resin

Abstract

The invention belongs to the technical field of resin fatigue strength testing, and particularly relates to a resin fatigue strength testing method and device. Comprising a resin column, a first liquid storage tank, a second liquid storage tank, a third liquid storage tank, a fourth liquid storage tank, an air compressor and a control system. The method has the beneficial effects that the fatigue strength of the resin can be tested in a short time by simulating the application condition of the resin, and when the fatigue strength of the resin is lower than the set technical requirement, the batch of resin cannot be applied to industrial use; the fatigue strength test is performed on the resin material in advance, and screening and optimization are performed according to the test result, so that an enterprise can select the resin material with better performance and higher fatigue resistance, and the loss of equipment shutdown, product scrapping and the like caused by material breakage in the production process is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of resin fatigue strength testing, and particularly relates to a resin fatigue strength testing method and device. Background Art

[0002] As an important polymer material, resin is widely used in multiple industries such as manufacturing, construction, transportation, and electronics. Its excellent properties, such as corrosion resistance, insulation, and plasticity, make resin products play a crucial role in industrial production. However, in actual use, resin materials often face a thorny problem - a high breakage rate. This problem not only seriously affects the service life and performance of products, but may also lead to the interruption of production lines, causing huge economic losses;

[0003] The breakage problem of resin is often the result of an accumulation effect, and its occurrence process is slow and difficult to detect, usually gradually emerging after being used for a period of time. Therefore, how to predict its fatigue strength and anti-breakage ability through effective testing means before resin is put into industrial use has become a technical problem urgently to be solved in the industry. Summary of the Invention

[0004] The purpose of the present invention is to provide a resin fatigue strength testing method and device, which can solve the problems of high breakage rate and difficult accurate evaluation of fatigue strength commonly existing in resin during actual use, thereby reducing the risk of high breakage rate in resin use.

[0005] The technical solution of the present invention is as follows: A resin fatigue strength testing device includes: a resin column, a first liquid storage tank, a second liquid storage tank, a third liquid storage tank, a fourth liquid storage tank, an air compressor, and a control system;

[0006] Wherein, the top of the resin column is respectively connected to the first liquid storage tank, the second liquid storage tank, the third liquid storage tank, and the fourth liquid storage tank through pipelines, the bottom of the resin column is connected to the air outlet end of the air compressor through a pipeline, and the bottom of the resin column is connected to the fourth liquid storage tank through a pipeline.

[0007] The fourth liquid storage tank is a waste liquid tank; the inside of the resin column is filled with the resin to be tested.

[0008] A first switch valve and a first constant flow pump are sequentially arranged on the pipeline connecting the top of the resin column and the first liquid storage tank;

[0009] A second switch valve and a second constant flow pump are sequentially arranged on the pipeline connecting the top of the resin column and the second liquid storage tank;

[0010] On the connecting pipeline between the top of the resin column and the third liquid storage tank, a third switching valve and a third constant flow pump are sequentially arranged.

[0011] On the connecting pipeline between the air outlet end of the air compressor and the bottom of the resin column, a first pressure gauge, a fourth switching valve, a pressure reducing valve, a second pressure gauge, and a fifth switching valve are sequentially arranged.

[0012] On the connecting pipeline between the bottom of the resin column and the fourth liquid storage tank, a sixth switching valve is arranged.

[0013] The first switching valve, the first constant flow pump, the second switching valve, the second constant flow pump, the third switching valve, the third constant flow pump, the fourth switching valve, the fifth switching valve, and the sixth switching valve are respectively electrically connected to the control system.

[0014] A test method using the device includes the following steps:

[0015] Step 1: Set 20% sodium chloride solution in the first liquid storage tank, pure water in the second liquid storage tank, and 12% sulfuric acid solution in the third liquid storage tank.

[0016] Step 2: Uniformly and tightly pack 5 mL of strong acid cation resin into the resin column, seal the resin column, and ensure good sealing and no leakage.

[0017] Step 3: Using the control system, control the first constant flow pump to start, other constant flow pumps to stop, control the first switching valve to start, other switching valves to stop, so that 20% sodium chloride solution passes through the resin at a flow rate of 100 mL / min; control the second constant flow pump to start, other constant flow pumps to stop, control the second switching valve to start, other switching valves to stop, so that pure water passes through the resin at a flow rate of 100 mL / min; control the third constant flow pump to start, other constant flow pumps to stop, control the third switching valve to start, other switching valves to stop, so that 12% sulfuric acid solution passes through the resin at a flow rate of 100 mL / min; use the air compressor to impact the resin at a pressure of 0.4 MPa for 20 s; repeat the cycle test 100 times in total to improve the reliability and repeatability of the data.

[0018] Step 4: Stop the testing device, control the sixth switching valve to open, close other switching valves, drain the wastewater, take out the resin from the resin column, pour all the resin samples in the resin column into a clean beaker, measure the volume of the resin using a precise measuring cylinder, and record the data. By comparing the initial loading volume with the volume after testing, calculate the percentage reduction in the resin volume; transfer the resin sample to a petri dish, conduct a detailed observation using a high-resolution electron microscope, accurately count the number of cracked and broken resins, and calculate the cracked ball rate of the resin to be 1%, the broken ball rate to be 1%, and the good ball rate to be 98% based on the total number of resins.

[0019] A testing method using the said device, comprising the following steps:

[0020] Step 1: Set a 20% sodium hydroxide solution in the first liquid storage tank, pure water in the second liquid storage tank, and a 12% sulfuric acid solution in the third liquid storage tank;

[0021] Step 2: Uniformly and tightly pack 5 ml of strongly basic anion resin into the resin column, seal the resin column, and ensure good sealing with no leakage;

[0022] Step 3: Using the control system, control the first constant flow pump to open, close other constant flow pumps, control the first switching valve to open, close other switching valves, and make the 20% sodium hydroxide solution pass through the resin at a flow rate of 100 mL / min; control the second constant flow pump to open, close other constant flow pumps, control the second switching valve to open, close other switching valves, and make pure water pass through the resin at a flow rate of 100 mL / min; control the third constant flow pump to open, close other constant flow pumps, control the third switching valve to open, close other switching valves, and make the 12% sulfuric acid solution pass through the resin at a flow rate of 100 mL / min; use an air compressor to impact the resin at a pressure of 0.4 MPa for 20 s; repeat the cycle test a total of 100 times to improve the reliability and repeatability of the data;

[0023] Step 4: Stop the testing device, control the sixth switching valve to open, close other switching valves, drain the wastewater, take out the resin from the resin column, pour all the resin samples in the resin column into a clean beaker, measure the volume of the resin using a precise measuring cylinder, and record the data. By comparing the initial loading volume with the volume after testing, calculate the percentage reduction in the resin volume; transfer the resin sample to a petri dish, conduct a detailed observation using a high-resolution electron microscope, accurately count the number of cracked and broken resins, and calculate the cracked ball rate of the resin to be 8%, the broken ball rate to be 2%, and the good ball rate to be 90% based on the total number of resins.

[0024] A testing method using the said device, comprising the following steps:

[0025] Step 1: Set a 12% sodium hydroxide solution in the first liquid storage tank, pure water in the second liquid storage tank, and a 12% sulfuric acid solution in the third liquid storage tank;

[0026] Step 2: Uniformly and tightly pack 5 ml of weak acid cation resin into the resin column, seal the resin column, and ensure good sealing without leakage;

[0027] Step 3: Using the control system, control the first constant flow pump to start, other constant flow pumps to stop, control the first switching valve to open, other switching valves to close, so that the 12% sodium hydroxide solution passes through the resin at a flow rate of 100 mL / min; control the second constant flow pump to start, other constant flow pumps to stop, control the second switching valve to open, other switching valves to close, so that pure water passes through the resin at a flow rate of 100 mL / min; control the third constant flow pump to start, other constant flow pumps to stop, control the third switching valve to open, other switching valves to close, so that the 12% sulfuric acid solution passes through the resin s at a flow rate of 100 mL / min; use an air compressor to impact the resin at a pressure of 0.4 MPa for 20 s; repeat the cycle test a total of 100 times to improve the reliability and repeatability of the data;

[0028] Step 4: Stop the test device, control the sixth switching valve to open, other switching valves to close, drain the wastewater, take out the resin from the resin column, pour all the resin samples in the resin column into a clean beaker, use a precise measuring cylinder to measure the volume of the resin, and record the data. By comparing the initial loading volume with the volume after testing, calculate the percentage reduction in the resin volume; transfer the resin sample to a petri dish, use a high-resolution electron microscope for detailed observation, accurately count the number of cracked and broken resins, and calculate the cracked ball rate of the resin to be 0%, the broken ball rate to be 2%, and the good ball rate to be 98% based on the total number of resins.

[0029] A test method using the said device, comprising the following steps:

[0030] Step 1: Set a 12% sodium hydroxide solution in the first liquid storage tank, pure water in the second liquid storage tank, and a 12% sulfuric acid solution in the third liquid storage tank;

[0031] Step 2: Uniformly and tightly pack 5 ml of weak base anion resin into the resin column, seal the resin column, and ensure good sealing without leakage;

[0032] Step 3: Using the control system, turn on the first constant flow pump and turn off the other constant flow pumps. Turn on the first switching valve and turn off the other switching valves, so that 12% sodium hydroxide solution passes through the resin at a flow rate of 100 mL / min; turn on the second constant flow pump and turn off the other constant flow pumps. Turn on the second switching valve and turn off the other switching valves, so that pure water passes through the resin at a flow rate of 100 mL / min; turn on the third constant flow pump and turn off the other constant flow pumps. Turn on the third switching valve and turn off the other switching valves, so that 12% sulfuric acid solution passes through the resin at a flow rate of 100 mL / min; use an air compressor to impact the resin at a pressure of 0.4 MPa for 20 s; repeat the cycle test a total of 100 times to improve the reliability and repeatability of the data;

[0033] Step 4: Stop the test device, turn on the sixth switching valve and turn off the other switching valves to drain the wastewater. Take out the resin from the resin column, pour all the resin samples in the resin column into a clean beaker, use a precise measuring cylinder to measure the volume of the resin, and record the data. By comparing the initial loading volume with the volume after testing, calculate the percentage reduction in the resin volume; transfer the resin sample to a petri dish, use a high-resolution electron microscope for detailed observation, accurately count the number of cracked and broken resins, and calculate that the cracked ball rate of the resin is 0%, the broken ball rate is 10%, and the good ball rate is 90% based on the total number of resins.

[0034] A test method using the said device, comprising the following steps:

[0035] Step 1: Set 12% sodium hydroxide solution in the first liquid storage tank, pure water in the second liquid storage tank, and 12% sulfuric acid solution in the third liquid storage tank;

[0036] Step 2: Uniformly and tightly pack 5 ml of weak base anion resin into the resin column, seal the resin column to ensure good sealing and no leakage;

[0037] Step 3: Using the control system, turn on the first constant flow pump and turn off the other constant flow pumps. Turn on the first switching valve and turn off the other switching valves, so that 12% sodium hydroxide solution passes through the resin at a flow rate of 100 mL / min; turn on the second constant flow pump and turn off the other constant flow pumps. Turn on the second switching valve and turn off the other switching valves, so that pure water passes through the resin at a flow rate of 100 mL / min; turn on the third constant flow pump and turn off the other constant flow pumps. Turn on the third switching valve and turn off the other switching valves, so that 12% sulfuric acid solution passes through the resin at a flow rate of 100 mL / min; use an air compressor to impact the resin at a pressure of 0.4 MPa for 20 s; repeat the cycle test a total of 100 times to improve the reliability and repeatability of the data;

[0038] Step 4: Stop the testing device, control the sixth switching valve to open, and close other switching valves to drain the wastewater. Take out the resin from the resin column, pour all the resin samples in the resin column into a clean beaker, measure the volume of the resin using a precise measuring cylinder, and record the data. Calculate the percentage reduction in the resin volume by comparing the initial loading volume with the volume after testing. Transfer the resin samples to a petri dish, conduct a detailed observation using a high-resolution electron microscope, accurately count the number of cracked and broken resins, and calculate the cracked ball rate of the resin to be 3%, the broken ball rate to be 2%, and the good ball rate to be 95% based on the total number of resins.

[0039] The beneficial effects of the present invention are as follows: By simulating the application conditions of the resin, the present invention can test the fatigue strength of the resin within a relatively short time. When the fatigue strength of the resin is lower than the set technical requirements, this batch of resin cannot be applied to industrial use. By conducting fatigue strength tests on the resin material in advance and screening and optimizing according to the test results, enterprises can select resin materials with better performance and stronger anti-fatigue ability, thereby reducing losses such as equipment downtime and product scrapping caused by material breakage during the production process. This not only improves production efficiency but also reduces production costs and enhances the market competitiveness of enterprises. Description of the Drawings

[0040] Figure 1 It is a schematic structural diagram of a resin fatigue strength testing device provided by the present invention.

[0041] In the figure: 1 resin column, 2 first liquid storage tank, 3 second liquid storage tank, 4 third liquid storage tank, 5 fourth liquid storage tank, 6 air compressor, 7 control system, 11 resin, 21 first switching valve, 22 first constant flow pump, 31 second switching valve, 32 second constant flow pump, 41 third switching valve, 42 third constant flow pump, 51 sixth switching valve, 61 first pressure gauge, 62 fourth switching valve, 63 pressure reducing valve, 65 fifth switching valve, 64 second pressure gauge. Detailed Embodiments

[0042] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Unless otherwise defined, the technical terms or scientific terms used in the specification should have the ordinary meaning understood by those with ordinary skills in the technical field to which the present invention belongs. The "including" or similar words used in the specification of this patent application for the present invention and the claims are intended to mean that the objects appearing before "including" cover the objects listed after "including" or their equivalents, without excluding other objects.

[0043] As Figure 1As shown in the figure, a resin fatigue strength testing device provided by an embodiment of the present invention includes: a resin column 1, a first liquid storage tank 2, a second liquid storage tank 3, a third liquid storage tank 4, a fourth liquid storage tank 5, an air compressor 6, and a control system 7;

[0044] Wherein, the top of the resin column 1 is respectively connected to the first liquid storage tank 2, the second liquid storage tank 3, the third liquid storage tank 4, and the fourth liquid storage tank 5 through pipelines. The bottom of the resin column 1 is connected to the air outlet end of the air compressor 6 through a pipeline, and the bottom of the resin column 1 is connected to the fourth liquid storage tank 5 through a pipeline;

[0045] Wherein, the fourth liquid storage tank 5 is a waste liquid tank;

[0046] Wherein, the inside of the resin column 1 is filled with the resin to be tested;

[0047] Wherein, a first switching valve 21 and a first constant flow pump 22 are sequentially arranged on the pipeline connecting the top of the resin column 1 and the first liquid storage tank 2;

[0048] A second switching valve 31 and a second constant flow pump 32 are sequentially arranged on the pipeline connecting the top of the resin column 1 and the second liquid storage tank 3;

[0049] A third switching valve 41 and a third constant flow pump 42 are sequentially arranged on the pipeline connecting the top of the resin column 1 and the third liquid storage tank 4;

[0050] Wherein, a first pressure gauge 61, a fourth switching valve 62, a pressure reducing valve 63, a second pressure gauge 64, and a fifth switching valve 65 are sequentially arranged on the pipeline connecting the air outlet end of the air compressor 6 and the bottom of the resin column 1;

[0051] Wherein, a sixth switching valve 51 is arranged on the pipeline connecting the bottom of the resin column 1 and the fourth liquid storage tank 5;

[0052] Wherein, the first switching valve 21, the first constant flow pump 22, the second switching valve 31, the second constant flow pump 32, the third switching valve 41, the third constant flow pump 42, the fourth switching valve 62, the fifth switching valve 65, and the sixth switching valve 51 are respectively electrically connected to the control system 7.

[0053] Preferably, the first constant flow pump 22, the second constant flow pump 32, and the third constant flow pump 42 are all peristaltic pumps;

[0054] Preferably, the first liquid storage tank 2, the second liquid storage tank 3, and the third liquid storage tank 4 are provided with the same or different chemical reagents.

[0055] A testing method using the resin fatigue strength testing device provided by an embodiment of the present invention includes the following steps:

[0056] Step 1: Set 20% sodium chloride solution in the first liquid storage tank 2, pure water in the second liquid storage tank 3, and 12% sulfuric acid solution in the third liquid storage tank 4;

[0057] Step 2: Uniformly and tightly pack 5 mL of strong acid cation resin into the resin column 1, seal the resin column 1 to ensure good sealing and no leakage;

[0058] Step 3: Using the control system 7, control the first constant flow pump 22 to start, other constant flow pumps to stop, control the first switching valve 21 to start, other switching valves to stop, so that the 20% sodium chloride solution passes through the resin at a flow rate of 100 mL / min; control the second constant flow pump 32 to start, other constant flow pumps to stop, control the second switching valve 31 to start, other switching valves to stop, so that pure water passes through the resin at a flow rate of 100 mL / min; control the third constant flow pump 42 to start, other constant flow pumps to stop, control the third switching valve 41 to start, other switching valves to stop, so that the 12% sulfuric acid solution passes through the resin at a flow rate of 100 mL / min; use the air compressor 6 to impact the resin at a pressure of 0.4 MPa for 20 s; repeat the cycle test a total of 100 times to improve the reliability and repeatability of the data;

[0059] Step 4: Stop the testing device, control the sixth switching valve to start, other switching valves to stop, drain the waste water, take out the resin from the resin column, pour all the resin samples in the resin column into a clean beaker, use an accurate measuring cylinder to measure the volume of the resin, and record the data. By comparing the initial loading volume with the volume after testing, calculate the percentage reduction in the resin volume; transfer the resin sample to a petri dish, use a high-resolution electron microscope for detailed observation, accurately count the number of cracked and broken resins, and calculate the cracked ball rate of the resin to be 1%, the broken ball rate to be 1%, and the good ball rate to be 98% based on the total number of resins.

[0060] A testing method using the resin fatigue strength testing device provided by the second embodiment of the present invention includes the following steps:

[0061] Step 1: Set 20% sodium hydroxide solution in the first liquid storage tank 2, pure water in the second liquid storage tank 3, and 12% sulfuric acid solution in the third liquid storage tank 4;

[0062] Step 2: Uniformly and tightly pack 5 ml of strong base anion resin into the resin column 1, seal the resin column 1 to ensure good sealing and no leakage;

[0063] Step 3: Using the control system 7, turn on the first constant flow pump 22, turn off other constant flow pumps, turn on the first switching valve 21, and turn off other switching valves, so that 20% sodium hydroxide solution passes through the resin at a flow rate of 100 mL / min; turn on the second constant flow pump 32, turn off other constant flow pumps, turn on the second switching valve 31, and turn off other switching valves, so that pure water passes through the resin at a flow rate of 100 mL / min; turn on the third constant flow pump 42, turn off other constant flow pumps, turn on the third switching valve 41, and turn off other switching valves, so that 12% sulfuric acid solution passes through the resin at a flow rate of 100 mL / min; use the air compressor 6 to impact the resin at a pressure of 0.4 MPa for 20 s; repeat the cycle test for a total of 100 times to improve the reliability and repeatability of the data;

[0064] Step 4: Stop the test device, turn on the sixth switching valve, turn off other switching valves, drain the wastewater, take out the resin from the resin column, pour all the resin samples in the resin column into a clean beaker, use a precise measuring cylinder to measure the volume of the resin, and record the data. By comparing the initial loading volume with the volume after the test, calculate the percentage reduction in the resin volume; transfer the resin sample to a petri dish, use a high-resolution electron microscope for detailed observation, accurately count the number of cracked and broken resins, and calculate the cracked ball rate of the resin to be 8%, the broken ball rate to be 2%, and the good ball rate to be 90% based on the total number of resins.

[0065] A testing method using the resin fatigue strength testing device provided in the third embodiment of the present invention includes the following steps:

[0066] Step 1: Set 12% sodium hydroxide solution in the first liquid storage tank 2, set pure water in the second liquid storage tank 3, and set 12% sulfuric acid solution in the third liquid storage tank 4;

[0067] Step 2: Uniformly and tightly load 5 ml of weak acid cation resin into the resin column 1, seal the resin column 1, and ensure good sealing and no leakage;

[0068] Step 3: Using the control system 7, control the first constant flow pump 22 to start, and other constant flow pumps to stop. Control the first switching valve 21 to open, and other switching valves to close, so that the 12% sodium hydroxide solution passes through the resin at a flow rate of 100 mL / min; control the second constant flow pump 32 to start, and other constant flow pumps to stop. Control the second switching valve 31 to open, and other switching valves to close, so that pure water passes through the resin at a flow rate of 100 mL / min; control the third constant flow pump 42 to start, and other constant flow pumps to stop. Control the third switching valve 41 to open, and other switching valves to close, so that the 12% sulfuric acid solution passes through the resin s at a flow rate of 100 mL / min; use the air compressor 6 to impact the resin at a pressure of 0.4 MPa for 20 s; repeat the cycle test for a total of 100 times to improve the reliability and repeatability of the data;

[0069] Step 4: Stop the test device, control the sixth switching valve to open, and other switching valves to close, drain the wastewater, take out the resin from the resin column, pour all the resin samples in the resin column into a clean beaker, use a precise measuring cylinder to measure the volume of the resin, and record the data. By comparing the initial filling volume with the volume after the test, calculate the percentage reduction in the resin volume; transfer the resin sample to a petri dish, use a high-resolution electron microscope for detailed observation, accurately count the number of cracked and broken resins, and calculate the cracked ball rate of the resin to be 0%, the broken ball rate to be 2%, and the good ball rate to be 98% based on the total number of resins.

[0070] A testing method using the resin fatigue strength testing device provided in the fourth embodiment of the present invention includes the following steps:

[0071] Step 1: Set 12% sodium hydroxide solution in the first liquid storage tank 2, pure water in the second liquid storage tank 3, and 12% sulfuric acid solution in the third liquid storage tank 4;

[0072] Step 2: Uniformly and tightly pack 5 ml of weakly basic anion resin into the resin column 1, seal the resin column 1 to ensure good sealing and no leakage;

[0073] Step 3: Using the control system 7, turn on the first constant flow pump 22 and turn off other constant flow pumps, turn on the first switching valve 21 and turn off other switching valves, so that 12% sodium hydroxide solution passes through the resin at a flow rate of 100 mL / min; turn on the second constant flow pump 32 and turn off other constant flow pumps, turn on the second switching valve 31 and turn off other switching valves, so that pure water passes through the resin at a flow rate of 100 mL / min; turn on the third constant flow pump 42 and turn off other constant flow pumps, turn on the third switching valve 41 and turn off other switching valves, so that 12% sulfuric acid solution passes through the resin at a flow rate of 100 mL / min; use the air compressor 6 to impact the resin at a pressure of 0.4 MPa for 20 s; repeat the cycle test for a total of 100 times to improve the reliability and repeatability of the data;

[0074] Step 4: Stop the test device, turn on the sixth switching valve and turn off other switching valves to drain the wastewater, take out the resin from the resin column, pour all the resin samples in the resin column into a clean beaker, use a precise measuring cylinder to measure the volume of the resin, and record the data. By comparing the initial loading volume with the volume after the test, calculate the percentage reduction in the resin volume; transfer the resin samples to a petri dish, use a high-resolution electron microscope for detailed observation, accurately count the number of cracked and broken resin, and calculate the cracked ball rate of the resin to be 0%, the broken ball rate to be 10%, and the good ball rate to be 90% based on the total number of resin.

[0075] A test method using the resin fatigue strength test device provided in the fifth embodiment of the present invention includes the following steps:

[0076] Step 1: Set 12% sodium hydroxide solution in the first liquid storage tank 2, set pure water in the second liquid storage tank 3, and set 12% sulfuric acid solution in the third liquid storage tank 4;

[0077] Step 2: Uniformly and tightly load 5 ml of weakly basic anion resin into the resin column 1, seal the resin column 1 to ensure good sealing and no leakage;

[0078] Step 3: Using the control system 7, control the first constant flow pump 22 to start, and other constant flow pumps to stop; control the first switching valve 21 to start, and other switching valves to stop, so that 12% sodium hydroxide solution passes through the resin at a flow rate of 100 mL / min; control the second constant flow pump 32 to start, and other constant flow pumps to stop; control the second switching valve 31 to start, and other switching valves to stop, so that pure water passes through the resin at a flow rate of 100 mL / min; control the third constant flow pump 42 to start, and other constant flow pumps to stop; control the third switching valve 41 to start, and other switching valves to stop, so that 12% sulfuric acid solution passes through the resin at a flow rate of 100 mL / min; use the air compressor 6 to impact the resin at a pressure of 0.4 MPa for 20 s; repeat the cycle test for a total of 100 times to improve the reliability and repeatability of the data;

[0079] Step 4: Stop the test device, control the sixth switching valve to start, and other switching valves to stop, drain the waste water, take out the resin from the resin column, pour all the resin samples in the resin column into a clean beaker, use a precise measuring cylinder to measure the volume of the resin, and record the data. By comparing the initial filling volume with the volume after the test, calculate the percentage reduction in the resin volume; transfer the resin sample to a petri dish, use a high-resolution electron microscope for detailed observation, accurately count the number of cracked and broken resins, and calculate the cracked ball rate of the resin to be 3%, the broken ball rate to be 2%, and the good ball rate to be 95% based on the total number of resins.

[0080] In summary, the present invention solves the problems of high breakage rate and difficult accurate evaluation of fatigue strength commonly existing in the actual use of resins, thereby reducing the risk of high breakage rate during resin use. By simulating the application conditions of resins, the present invention can test the fatigue strength of resins in a relatively short time. When the fatigue strength of the resin is lower than the set technical requirements, this batch of resins cannot be applied to industrial use; by pre-testing the fatigue strength of resin materials and screening and optimizing according to the test results, enterprises can select resin materials with better performance and stronger anti-fatigue ability, thereby reducing losses such as equipment downtime and product scrapping caused by material breakage during the production process. This not only improves production efficiency but also reduces production costs and enhances the market competitiveness of enterprises.

[0081] The above are only the preferred embodiments of the present invention, and do not limit the implementation manners and protection scope of the present invention. For those skilled in the art, it should be realized that all equivalent replacements and obvious changes made by using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A resin fatigue strength testing device, characterized in that: include: A resin column, a first liquid storage tank, a second liquid storage tank, a third liquid storage tank, a fourth liquid storage tank, an air compressor, and a control system; Among them, the top of the resin column is connected to the first liquid storage tank, the second liquid storage tank, the third liquid storage tank, and the fourth liquid storage tank pipeline respectively, the bottom of the resin column is connected to the air outlet pipeline of the air compressor, and the bottom of the resin column is connected to the fourth liquid storage tank pipeline.

2. A resin fatigue strength testing device as claimed in claim 1, characterized in that: The fourth liquid storage tank is a waste liquid tank; the interior of the resin column is filled with the resin to be tested.

3. A resin fatigue strength testing device as claimed in claim 1, characterized in that: A first switch valve and a first constant flow pump are sequentially arranged on the connecting pipeline between the top of the resin column and the first liquid storage tank; A second switch valve and a second constant flow pump are sequentially arranged on the connecting pipeline between the top of the resin column and the second liquid storage tank; A third switch valve and a third constant flow pump are sequentially arranged on the connecting pipeline between the top of the resin column and the third liquid storage tank; A first pressure gauge, a fourth switch valve, a pressure reducing valve, a second pressure gauge, and a fifth switch valve are sequentially arranged on a connecting pipeline between the air outlet end of the air compressor and the bottom of the resin column.

4. A resin fatigue strength testing device as claimed in claim 1, characterized in that: A sixth switch valve is arranged on the connecting pipeline between the bottom of the resin column and the fourth liquid storage tank.

5. A resin fatigue strength testing device as claimed in claim 4, characterized in that: The first switch valve, the first constant current pump, the second switch valve, the second constant current pump, the third switch valve, the third constant current pump, the fourth switch valve, the fifth switch valve, and the sixth switch valve are electrically connected to the control system respectively.

6. A testing method using the device as claimed in claims 1-5, characterized in that: The steps include: Step 1: a 20% sodium chloride solution is placed in the first liquid storage tank, pure water is placed in the second liquid storage tank, and a 12% sulfuric acid solution is placed in the third liquid storage tank; Step 2: Fill 5 mL of strong acid cationic resin evenly and tightly into the resin column, seal the resin column, and ensure that it is well sealed without leakage; Step 3: Using a control system, control the first constant flow pump to start, other constant flow pumps to close, control the first switch valve to start, and other switch valves to close, so that 20% sodium chloride solution passes through the resin at a flow rate of 100mL / min; control the second constant flow pump to start, other constant flow pumps to close, control the second switch valve to start, and other switch valves to close, so that pure water passes through the resin at a flow rate of 100mL / min; control the third constant flow pump to start, other constant flow pumps to close, control the third switch valve to start, and other switch valves to close, so that 12% sulfuric acid solution passes through the resin at a flow rate of 100mL / min; use an air compressor to impact the resin at a pressure of 0.4MPa for 20s; repeat the cycle test for a total of 100 times to improve the reliability and repeatability of the data; Step 4: Stop the test device, control the sixth switch valve to open, close the other switch valves, drain the waste water, take the resin out of the resin column, pour all the resin samples in the resin column into a clean beaker, use an accurate measuring cylinder to measure the volume of the resin, and record the data. By comparing the initial filling volume with the volume after the test, calculate the percentage reduction of the resin volume; The resin sample was transferred to a culture dish and carefully observed using a high-resolution electron microscope. The number of resin cracks and fragments was accurately counted, and based on the total number of resins, the resin ball cracking rate was calculated to be 1%, the ball breakage rate was 1%, and the good ball rate was 98%.

7. A testing method using the device as claimed in claims 1-5, characterized in that: The steps include: Step 1: a 20% sodium hydroxide solution is placed in the first liquid storage tank, pure water is placed in the second liquid storage tank, and a 12% sulfuric acid solution is placed in the third liquid storage tank; Step 2: Fill 5 ml of strong base anionic resin evenly and tightly into the resin column, seal the resin column, and ensure that it is well sealed and has no leakage; Step 3: Using a control system, control the first constant flow pump to start, other constant flow pumps to close, control the first switch valve to start, and other switch valves to close, so that 20% sodium hydroxide solution passes through the resin at a flow rate of 100mL / min; control the second constant flow pump to start, other constant flow pumps to close, control the second switch valve to start, and other switch valves to close, so that pure water passes through the resin at a flow rate of 100mL / min; control the third constant flow pump to start, other constant flow pumps to close, control the third switch valve to start, and other switch valves to close, so that 12% sulfuric acid solution passes through the resin at a flow rate of 100mL / min; use an air compressor to impact the resin at a pressure of 0.4MPa for 20s; repeat the cycle test for a total of 100 times to improve the reliability and repeatability of the data; Step 4: Stop the test device, control the sixth switch valve to open, close the other switch valves, drain the waste water, take the resin out of the resin column, pour all the resin samples in the resin column into a clean beaker, use an accurate measuring cylinder to measure the volume of the resin, and record the data. By comparing the initial filling volume with the volume after the test, calculate the percentage reduction of the resin volume; The resin sample was transferred to a culture dish and carefully observed using a high-resolution electron microscope to accurately count the number of resin cracks and fragments. Based on the total number of resins, it was calculated that the resin ball splitting rate was 8%, the ball crushing rate was 2%, and the ball strike rate was 90%.

8. A testing method using the device as claimed in claims 1-5, characterized in that: The steps include: Step 1: a 12% sodium hydroxide solution is placed in the first liquid storage tank, pure water is placed in the second liquid storage tank, and a 12% sulfuric acid solution is placed in the third liquid storage tank; Step 2: Fill 5 ml of weak acid cationic resin evenly and tightly into the resin column, seal the resin column, and ensure that it is well sealed and leak-free; Step 3: Using a control system, control the first constant flow pump to start, other constant flow pumps to close, control the first switch valve to start, and other switch valves to close, so that 12% sodium hydroxide solution passes through the resin at a flow rate of 100mL / min; control the second constant flow pump to start, other constant flow pumps to close, control the second switch valve to start, and other switch valves to close, so that pure water passes through the resin at a flow rate of 100mL / min; control the third constant flow pump to start, other constant flow pumps to close, control the third switch valve to start, and other switch valves to close, so that 12% sulfuric acid solution passes through the resin at a flow rate of 100mL / min; use an air compressor to impact the resin at a pressure of 0.4MPa for 20s; repeat the cycle test for a total of 100 times to improve the reliability and repeatability of the data; Step 4: Stop the test device, control the sixth switch valve to open, close the other switch valves, drain the waste water, take the resin out of the resin column, pour all the resin samples in the resin column into a clean beaker, use an accurate measuring cylinder to measure the volume of the resin, and record the data. By comparing the initial filling volume with the volume after the test, calculate the percentage reduction of the resin volume; The resin sample was transferred to a petri dish and carefully observed using a high-resolution electron microscope to accurately count the number of resin cracks and fragments. Based on the total number of resins, the resin ball cracking rate was calculated to be 0%, the ball breakage rate was 2%, and the good ball rate was 98%.

9. A testing method using the device as claimed in claims 1-5, characterized in that: The steps include: Step 1: a 12% sodium hydroxide solution is placed in the first liquid storage tank, pure water is placed in the second liquid storage tank, and a 12% sulfuric acid solution is placed in the third liquid storage tank; Step 2: Fill 5 ml of weak base anionic resin evenly and tightly into the resin column, seal the resin column, and ensure that it is well sealed and has no leakage; Step 3: Using a control system, control the first constant flow pump to start, other constant flow pumps to close, control the first switch valve to start, and other switch valves to close, so that 12% sodium hydroxide solution passes through the resin at a flow rate of 100mL / min; control the second constant flow pump to start, other constant flow pumps to close, control the second switch valve to start, and other switch valves to close, so that pure water passes through the resin at a flow rate of 100mL / min; control the third constant flow pump to start, other constant flow pumps to close, control the third switch valve to start, and other switch valves to close, so that 12% sulfuric acid solution passes through the resin at a flow rate of 100mL / min; use an air compressor to impact the resin at a pressure of 0.4MPa for 20s; repeat the cycle test for a total of 100 times to improve the reliability and repeatability of the data; Step 4: Stop the test device, control the sixth switch valve to open, close the other switch valves, drain the waste water, take the resin out of the resin column, pour all the resin samples in the resin column into a clean beaker, use an accurate measuring cylinder to measure the volume of the resin, and record the data. By comparing the initial filling volume with the volume after the test, calculate the percentage reduction of the resin volume; The resin sample was transferred to a petri dish and carefully observed using a high-resolution electron microscope to accurately count the number of resin cracks and fragments. Based on the total number of resins, the resin ball breakage rate was calculated to be 0%, the ball breakage rate was 10%, and the ball strike rate was 90%.

10. A testing method using the device as claimed in claims 1-5, characterized in that: The steps include: Step 1: a 12% sodium hydroxide solution is placed in the first liquid storage tank, pure water is placed in the second liquid storage tank, and a 12% sulfuric acid solution is placed in the third liquid storage tank; Step 2: Fill 5 ml of weak base anionic resin evenly and tightly into the resin column, seal the resin column, and ensure that it is well sealed and has no leakage; Step 3: Using a control system, control the first constant flow pump to start, other constant flow pumps to close, control the first switch valve to start, and other switch valves to close, so that 12% sodium hydroxide solution passes through the resin at a flow rate of 100mL / min; control the second constant flow pump to start, other constant flow pumps to close, control the second switch valve to start, and other switch valves to close, so that pure water passes through the resin at a flow rate of 100mL / min; control the third constant flow pump to start, other constant flow pumps to close, control the third switch valve to start, and other switch valves to close, so that 12% sulfuric acid solution passes through the resin at a flow rate of 100mL / min; use an air compressor to impact the resin at a pressure of 0.4MPa for 20s; repeat the cycle test for a total of 100 times to improve the reliability and repeatability of the data; Step 4: Stop the test device, control the sixth switch valve to open, close the other switch valves, drain the waste water, take the resin out of the resin column, pour all the resin samples in the resin column into a clean beaker, use an accurate measuring cylinder to measure the volume of the resin, and record the data. By comparing the initial filling volume with the volume after the test, calculate the percentage reduction of the resin volume; The resin sample was transferred to a petri dish and carefully observed using a high-resolution electron microscope to accurately count the number of resin cracks and fragments. Based on the total number of resins, the resin ball cracking rate was calculated to be 3%, the ball crushing rate was 2%, and the good ball rate was 95%.

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