Plastic part deformation test method and device

Abstract

The invention relates to the technical field of tests, and particularly discloses a deformation test method and device for a plastic part, so as to improve the accuracy of an anti-aging performance test result of the plastic part. The method comprises the following steps: configuring test stage conditions for simulating a real driving environment for each test stage, wherein the test stage conditions comprise a corresponding vibration road spectrum condition, a simulated sunlight illumination condition, an environment temperature condition and a relative humidity condition; carrying out a storage test on the plastic part by using corresponding test stage conditions in a plurality of different test stages, and recording deformation test data after each test; and obtaining a deformation test result of the plastic part according to the deformation test data.

Description

Technical Field

[0001] The invention relates to the field of testing technology, and in particular to a deformation testing method and device for plastic parts. Background Art

[0002] Plastic parts are widely used due to their excellent properties such as good mechanical properties and molding diversity. However, the application scenarios of plastic parts are diverse. Some application scenarios involve complex working conditions and are generally exposed to the external environment. In addition, when plastics are used as automotive exterior parts, they are always affected by stimuli such as vibrations caused by the engine and uneven road surface while the car is driving. Under such complex operating conditions, aging is inevitable. The aging and degradation of exterior parts are mainly reflected in two aspects: appearance performance and mechanical properties.

[0003] The inventors have found that in order to address the deformation of products during use, traditional solutions generally set different temperature ranges and corresponding durations for hot and cold shocks, or simulate the aging resistance performance under the five scenarios of light, cold, heat, humidity and wind that are commonly encountered in the natural environment.

[0004] In the above scheme, the factors considered are too single, and the test results often show that the artificial accelerated test results fail to reproduce the actual use conditions of plastic parts, and even contradictory results appear, resulting in inaccurate aging resistance test results. Summary of the invention

[0005] The invention provides a deformation test method and device for a plastic part, so as to solve the technical problem that the test result of the anti-aging performance of the plastic part in the traditional test method is not accurate enough.

[0006] A deformation test method for a plastic part, the method comprising:

[0007] Configuring test phase conditions simulating a real driving environment for each test phase, wherein the test phase conditions include corresponding vibration road spectrum conditions, simulated sunlight conditions, ambient temperature conditions, and relative humidity conditions;

[0008] Performing storage tests on the plastic parts in a plurality of different test stages using corresponding test stage conditions, and recording deformation test data after each test;

[0009] A deformation test result of the plastic part is obtained according to the deformation test data.

[0010] Furthermore, the storage test of the plastic parts is carried out in a plurality of different test stages using corresponding test stage conditions, including: under the vibration spectrum configured in each of the test stages and the simulated sunlight conditions, the storage test is carried out in a test stage sequence of a high temperature test stage and a low temperature test stage alternating at least twice, and a transition temperature test stage is further arranged between each high temperature test stage and each low temperature test stage; the test temperature of the high temperature test stage is greater than the test temperature of the transition temperature test stage, and the test temperature of the transition temperature test stage is greater than the test temperature of the low temperature test stage; the test humidity of the high temperature test stage is greater than the test humidity of the transition temperature test stage; the test duration of the high temperature test stage is greater than the test duration of the low temperature test stage, and the test duration of the low temperature test stage is greater than the test duration of the transition temperature test stage.

[0011] Further, the test temperature of the high temperature test stage includes a first preset temperature and a second preset temperature, the test temperature of the transition stage includes a third preset temperature, and the test temperature of the low temperature test stage includes a fourth test temperature; the test humidity of the high temperature test stage includes a first preset relative humidity and a second preset relative humidity, and the test humidity of the transition test stage includes a third preset test humidity; the test duration of the high temperature test stage includes a first preset duration and a second preset duration, the test duration of the transition temperature test stage includes a fourth preset duration, and the test duration of the low temperature test stage includes a third preset duration.

[0012] Further, under the vibration road spectrum configured in each of the test stages and the simulated sunlight illumination conditions, the storage test is carried out in a test stage sequence of at least two alternating high temperature test stages and low temperature test stages, including:

[0013] Plastic parts are stored in the vibration spectrum and simulated sunlight conditions configured in each test stage according to the following test stage sequence:

[0014] storing the plastic part for a first preset time period at a first preset temperature and a second preset relative humidity;

[0015] storing the plastic part at a third preset temperature and a third preset relative humidity for a fourth preset time period;

[0016] storing the plastic part at a fourth preset temperature for a third preset time;

[0017] storing the plastic part at a third preset temperature and a third preset relative humidity for a fourth preset time period;

[0018] storing the plastic part for a second preset time period at a second preset temperature and a first preset relative humidity;

[0019] storing the plastic part at a third preset temperature and a third preset relative humidity for a fourth preset time period;

[0020] storing the plastic part at a fourth preset temperature for a third preset time;

[0021] storing the plastic part at a third preset temperature for a fourth preset time period;

[0022] Among them, the first preset temperature, the second preset temperature, the third preset temperature and the fourth preset temperature are different temperature ranges, and the first preset time length, the second preset time length, the third preset time length and the fourth preset time length are different time length ranges.

[0023] Further, the first preset temperature>the second preset temperature>the third preset temperature>the fourth preset temperature.

[0024] Furthermore, the first preset duration>the second preset duration>the third preset duration>the fourth preset duration.

[0025] Furthermore, the vibration road spectrum conditions include that the duration of each loaded vibration road spectrum is adjustable, and the vibration frequency of each loaded vibration road spectrum is within a preset frequency range.

[0026] Furthermore, the preset frequency range is 8 to 100 Hz.

[0027] Furthermore, the storage test is performed on the plastic part using corresponding test stage conditions in a plurality of different test stages, and deformation test data after each test is recorded, including:

[0028] According to a plurality of different test stages under each cycle test, the storage cycle test is performed on the plastic part using corresponding test stage conditions, and deformation test data after each cycle test is recorded.

[0029] Furthermore, the simulated sunlight illumination condition includes a condition of simulating sunlight illumination being turned on, and the simulated sunlight illumination being turned on condition is distributed in different test stages in each cycle test.

[0030] Furthermore, when the simulated sunlight illumination is turned on, the corresponding illumination temperature is the highest temperature of the plastic part recorded under the actual use condition of the plastic part.

[0031] A deformation test device for plastic parts, characterized in that it comprises a vibration environment box, a sunlight simulation system and a clamping tool, wherein the clamping tool is used to fix the plastic part to be tested and is connected to the vibration table of the vibration environment box, and the sunlight simulation system is arranged in the vibration environment box, wherein:

[0032] The vibration environment box is used to provide vibration path spectrum conditions, environmental temperature conditions and relative humidity conditions for the storage test, and the sunlight simulation system is used to provide simulated sunlight conditions for the storage test.

[0033] In the scheme provided above, the test process is divided into multiple test stages, and through alternating test stage conditions, four comprehensive accelerated test conditions are utilized, including a vibration path spectrum. On the one hand, it can better fit the actual use conditions of plastic parts, and can be used as a prediction of the warping deformation of plastic parts, providing an effective verification method for subsequent product development and design verification. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0035] Figure 1 The figure is a flow chart of a deformation test method of a plastic part in one embodiment of the present invention. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments 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.

[0037] As mentioned in the background, plastic parts are widely used because of their excellent mechanical properties, molding diversity and other excellent properties. However, plastic parts are generally exposed to the external environment, and when used as automotive exterior parts, plastics are always affected by vibrations caused by the engine and uneven road surface during driving. Under such complex use conditions, aging is inevitable. The aging and degradation of exterior parts are mainly reflected in the appearance performance and mechanical properties. At present, the existing artificial acceleration tests can predict the color difference, glossiness and mechanical property changes of exterior products in advance, but for the deformation of products during use, the test results often show that the artificial acceleration test results fail to reproduce the actual use conditions of plastic parts. In this regard, the applicant provides a new deformation test device for plastic parts and a corresponding deformation test method to accurately obtain the aging resistance test results.

[0038] First of all, a deformation test device for plastic parts provided by the implementation of the present application is described. The deformation test device provided by the present application includes a vibration environment chamber, a sunlight simulation system and a clamping tool. The clamping tool is used to fix the plastic parts to be tested and is connected to the vibration table of the vibration environment chamber. The sunlight simulation system is arranged in the vibration environment chamber, wherein: the vibration environment chamber is used to provide vibration path spectrum conditions, ambient temperature conditions and relative humidity conditions for storage tests, and the sunlight simulation system is used to provide simulated sunlight illumination conditions for storage tests.

[0039] Exemplarily, plastic parts may include automobile exterior accessories or other automobile exterior parts, such as windshield wiper side covers, etc., and may also include parts of mobile devices such as bicycles and motorcycles, without specific limitation. Through the deformation test device, four test conditions of ambient temperature, relative humidity, vibration and sunlight simulation can be used to quickly test and predict the changing laws of aging warping deformation of plastic parts during use. Exemplarily, the sunlight simulation system can use infrared light, xenon light or full spectrum methods to simulate sunlight, without specific limitation.

[0040] Taking the application scenario of plastic parts in automobile exterior accessories or other automobile exterior parts as an example, in order to further simulate the actual vehicle environment, a temperature sensor can also be placed on the surface of the clamping fixture close to the automobile exterior plastic parts, so as to use the temperature sensor to monitor whether the maximum temperature meets the requirements. The maximum temperature that meets the requirements comes from the maximum temperature of the plastic parts of the whole vehicle in the past project, so as to simulate the sun exposure conditions of the actual vehicle. The vibration environment box provides the environment temperature and relative humidity cycle with alternating conditions, and applies vibration during the test process, so that the vibration table in the vibration environment box drives the plastic parts to vibrate, so as to simulate the actual driving environment of the actual vehicle, so as to test the actual deformation of the plastic parts when loaded on the actual vehicle, and the changes in the installation points, face differences and gaps of the products before and after the test can be recorded as the judgment of the warpage deformation.

[0041] It can be seen that the deformation test device for plastic parts provided in this application can provide four conditions for comprehensive deformation acceleration tests, which can be closer to the actual use conditions of plastic parts. On the one hand, it can be used to predict the warping deformation of plastic parts, provide an effective verification method for subsequent product development and design verification, and speed up the product development rhythm. On the other hand, it can reduce the time for mounting actual products in order to verify the effectiveness of exterior decoration improvement samples, and has high practicality.

[0042] A deformation test device for a plastic part is described above. Now, in conjunction with the deformation test device for a plastic part, a deformation test method for a plastic part provided in an embodiment of the present application is described below.

[0043] In one embodiment, if Figure 1A deformation test method for a plastic part is provided, comprising the following steps:

[0044] S10: configuring test phase conditions simulating a real driving environment for each test phase, wherein the test phase conditions include corresponding vibration road spectrum conditions, simulated sunlight conditions, ambient temperature conditions, and relative humidity conditions.

[0045] S20: performing storage tests on the plastic parts in a plurality of different test stages using corresponding test stage conditions, and recording test data after each test.

[0046] S30: Acquire a test result of the plastic part according to the test data.

[0047] In this embodiment, the test process is divided into multiple test phases. For example, the test process of a test can be divided into different test phases such as 5, 6, 7, and 8. Then, each test phase is configured with a test phase condition simulating a real driving environment. The test phase conditions of each test phase include corresponding vibration road spectrum conditions, simulated sunlight conditions, ambient temperature conditions, and relative humidity conditions. That is, different test phases have corresponding test phase conditions.

[0048] Among them, the vibration spectrum conditions are the vibration conditions provided, such as what is the vibration spectrum range of the vibration frequency, when to load the vibration, the simulated sunlight conditions include whether to turn on the simulated sunlight, what form of light is provided, the temperature of the simulated sunlight, etc. The ambient temperature conditions are what kind of ambient temperature is provided, including the temperature range and temperature changes, etc. The relative humidity conditions are what kind of relative humidity and humidity changes are provided.

[0049] Next, the plastic parts are subjected to storage tests in a plurality of different test stages using corresponding test stage conditions, and deformation test data of the plastic parts after each test is recorded. Finally, the deformation test results of the plastic parts can be determined using the recorded deformation test data.

[0050] Exemplarily, the deformation test data may include but is not limited to recording the deformation test data by measuring the changes in the installation point, face difference and gap of the product after the test, so as to judge the warpage deformation amount and obtain the deformation test result.

[0051] It can be seen that in this embodiment, a deformation test method for plastic parts is provided, the test process is divided into multiple test stages, and alternating test stage conditions are used. Through four comprehensive accelerated test conditions, and also including a vibration path spectrum, on the one hand, it can be closer to the actual use conditions of plastic parts, can be used as a prediction of the warping deformation of plastic parts, provide an effective verification method for subsequent product development and design verification, and speed up the product development rhythm. On the other hand, it reduces the time for verifying the effectiveness of exterior trim samples and carrying actual products, and has high practicality.

[0052] In one embodiment, the storage test of the plastic part is performed in a plurality of different test stages using corresponding test stage conditions, including:

[0053] Under the vibration road spectrum configured in each of the test stages and the simulated sunlight illumination conditions, the storage tests are carried out in a test stage sequence of alternating high temperature test stage and low temperature test stage at least twice, and a transition temperature test stage is also arranged between each high temperature test stage and each low temperature test stage; the test temperature of the high temperature test stage is greater than the test temperature of the transition temperature test stage, and the test temperature of the transition temperature test stage is greater than the test temperature of the low temperature test stage; the test humidity of the high temperature test stage is greater than the test humidity of the transition temperature test stage; the test duration of the high temperature test stage is greater than the test duration of the low temperature test stage, and the test duration of the low temperature test stage is greater than the test duration of the transition temperature test stage.

[0054] Further, the test temperature of the high temperature test stage includes a first preset temperature and a second preset temperature, the test temperature of the transition stage includes a third preset temperature, and the test temperature of the low temperature test stage includes a fourth test temperature; the test humidity of the high temperature test stage includes a first preset relative humidity and a second preset relative humidity, and the test humidity of the transition test stage includes a third preset test humidity; the test duration of the high temperature test stage includes a first preset duration and a second preset duration, the test duration of the transition temperature test stage includes a fourth preset duration, and the test duration of the low temperature test stage includes a third preset duration.

[0055] In this embodiment, the specific test stage types and the corresponding test stage conditions are clarified, wherein, among all the test stages, there are stages where the test stage conditions are the same as the corresponding test stage conditions. Of course, in other embodiments, there may also be corresponding condition changes, which are not limited to the specific embodiments of the present application. It can be seen that for each test stage, the corresponding vibration spectrum and simulated sunlight conditions are set, and then storage tests are carried out separately according to the alternating ambient temperature and relative humidity of the test stage. It can be divided into 8 test stages, by simulating different ranges of ambient temperature and relative humidity, and setting different storage times, to perform alternating simulation changes in conditions, which can better simulate the conditions of the actual use of plastic parts, thereby facilitating the acquisition of more valuable deformation test data.

[0056] In one embodiment, step S20, that is, performing a storage test on the plastic part in a plurality of different test stages using corresponding test stage conditions, includes:

[0057] Under the vibration road spectrum and simulated sunlight conditions configured in each test stage, storage tests are carried out in the following test stage sequence:

[0058] S21: storing the plastic part at a first preset temperature and a second preset relative humidity for a first preset time period;

[0059] S22: storing the plastic part at a third preset temperature and a third preset relative humidity for a fourth preset time period;

[0060] S23: storing the plastic part at a fourth preset temperature for a third preset time;

[0061] S24: storing the plastic part at a third preset temperature and a third preset relative humidity for a fourth preset time period;

[0062] S25: storing the plastic part for a second preset time period at a second preset temperature and a first preset relative humidity;

[0063] S26: storing the plastic part at a third preset temperature and a third preset relative humidity for a fourth preset time period;

[0064] S27: storing the plastic part at a fourth preset temperature for a third preset time period;

[0065] S28: storing the plastic part at the third preset temperature for a fourth preset time period;

[0066] Among them, the first preset temperature, the second preset temperature, the third preset temperature and the fourth preset temperature are different temperature ranges, and the first preset time length, the second preset time length, the third preset time length and the fourth preset time length are different time length ranges.

[0067] It should be noted that the vibration road spectrum configured in each test stage can be set accordingly, and the simulated sunlight illumination condition can be simulated sunlight on or simulated sunlight off, which can be simulated and configured according to actual conditions. The same applies to the vibration road spectrum, and there is no limitation here.

[0068] That is to say, in this embodiment, the specific test stage types and the corresponding test stage conditions are clarified, according to the specific test sequence, among which, in all test stages, there are stages where the test stage conditions are the same as the corresponding test stages. Of course, in other embodiments, there may also be corresponding condition changes, which are not limited to the specific embodiments of the present application. It can be seen that for each test stage, the corresponding vibration road spectrum and simulated sunlight illumination conditions are set, and then storage tests are carried out separately according to the alternating ambient temperature and relative humidity of the test stage. It can be divided into 8 test stages, by simulating different ranges of ambient temperature and relative humidity, and setting different storage times, to perform alternating simulation changes in conditions, which can better simulate the conditions of the actual use of plastic parts, thereby facilitating the acquisition of more valuable deformation test data.

[0069] In one embodiment, the first preset temperature>the second preset temperature>the third preset temperature>the fourth preset temperature, and the first preset time>the second preset time>the third preset time>the fourth preset time.

[0070] In this embodiment, it can be seen that when the ambient temperature is high (the first preset temperature, the second preset temperature), the duration is longer (the first preset duration, the second preset duration), and when the ambient temperature is low (the third preset temperature, the fourth preset temperature), the duration is shorter. In one test, through the alternating conditions of different test stages, the ambient temperature can be raised to the highest temperature and then dropped to the lowest temperature twice. The purpose is to increase the testing of extreme working conditions as much as possible, so as to obtain more valuable deformation test data.

[0071] It should be noted that in other tests, the above-mentioned temperature and / or storage time may have other implementation modes, for example, the first preset temperature < the second preset temperature < the third preset temperature < the fourth preset temperature, the first preset time > the second preset time > the third preset time > the fourth preset time. This also simulates another extreme working condition, which is also conducive to obtaining valuable deformation test data, and is not specifically limited.

[0072] In one embodiment, the vibration spectrum condition includes that the duration of each loaded vibration spectrum is adjustable, and the vibration frequency of each loaded vibration spectrum is within a preset frequency range. Exemplarily, the preset frequency range is 8 to 100 Hz, and may also be other vibration frequency ranges, which are not specifically limited.

[0073] It should be understood that plastic parts will also be affected by vibration in actual use scenarios. In order to truly simulate this situation in the embodiments of the present application, the vibration provided by the vibration environment box simulates the vibration road spectrum of the actual driving process. The duration of each loaded vibration road spectrum is also adjustable, and the frequency of each loaded vibration road spectrum is within a preset frequency range, and each frequency corresponds to an acceleration power spectrum density.

[0074] It can be seen that this embodiment uses a vibration environment box to perform a vibration simulation experiment according to a vibration road spectrum and related environmental conditions, thereby simulating real driving conditions and improving the accuracy of the test.

[0075] In one embodiment, in step S20, the storage test is performed on the plastic part in a plurality of different test stages using corresponding test stage conditions, and the deformation test data after each test is recorded, including: according to a plurality of different test stages under each cycle test, the storage cycle test is performed on the plastic part using corresponding test stage conditions, and the deformation test data after each cycle test is recorded. Exemplarily, the number of cycle tests can be 10 times, of course, there can be other numbers of cycle tests, such as 8 times, 9 times, 12 times, etc., which are not specifically limited.

[0076] In this embodiment, in order to improve the accuracy of the test, in addition to dividing each test process into multiple test stages and using the test stage conditions corresponding to each test stage to perform storage tests, a cycle test is also performed, that is, the test is repeated multiple times, and the test stages of each cycle test are the same. Finally, the deformation test data after each cycle test is recorded, thereby utilizing the deformation test data recorded for each cycle test.

[0077] In one embodiment, the simulated sunlight illumination condition includes a condition of simulating the sunlight illumination being turned on. In multiple cycle tests, the simulated sunlight illumination being turned on condition is distributed in different test stages in each cycle test.

[0078] Exemplarily, in combination with the above embodiments, for example, taking 10 cycle tests as an example, in the 1st, 3rd, and 5th cycle tests, the sunlight is simulated to be turned on during the S21 test stage, and the sunlight is simulated to be turned off during the S22-S28 test stages; in the 2nd, 4th, and 6th cycle tests, the sunlight is simulated to be turned off during the S21-S24 test stages, the sunlight is simulated to be turned on during the S25-S26 test stages, and the sunlight is simulated to be turned off during the S27-S28 test stages; in the 7th and 9th cycle tests, the sunlight is simulated to be turned off during the S21-S23 test stages, the sunlight is simulated to be turned on during the S24-S25 test stages, and the sunlight is simulated to be turned off during the S26-S28 test stages; in the 8th and 10th cycle tests, the sunlight is simulated to be turned off during the S21-S28 test stages. It should be noted that this example is only for illustrative purposes and does not limit the embodiments of the present application. In addition to the above distribution methods, there may be other distribution methods, which are not specifically limited.

[0079] In addition, in one embodiment, when the simulated sunlight illumination condition is turned on, the corresponding illumination temperature is the highest temperature of the plastic part recorded in the historical data of the actual use condition of the plastic part. It should be understood that the illumination occurs when the ambient temperature is high, so as to simulate the strongest sun exposure in the real environment and the highest ambient temperature. Therefore, when the temperature is low, such as below -40°, the illumination is turned off, and the sunlight simulation temperature can be (for example, 110±2)°C, and there is no specific limitation.

[0080] In addition, the illumination duration of each cycle test can be set to about 5 hours, without specific limitation.

[0081] It can be seen that in this embodiment, for multiple cycle tests, the conditions for simulating sunlight illumination are distributed in different test stages, and the illumination time is distributed differently in the test stages of each test cycle. In some test cycles, it is located in an earlier test stage, and in some test cycles, it is located in a later test stage, so as to simulate illumination in different time periods of a day, thereby improving the effectiveness of the test and obtaining more accurate deformation test data.

[0082] It should also be noted that in different cycle tests, the loading of the vibration spectrum can also be in an open or closed state, and can also be distributed in different test stages in the cycle test, without specific restrictions. In this way, the vibration conditions in the real environment can also be simulated to improve the effectiveness of the test.

[0083] In order to more intuitively understand the test process, the above embodiments are summarized below, and an example is given to illustrate the process of multiple test stages of a test in the form of a table, as shown in the following Table 1:

[0084] Table 1

[0085]

[0086]

[0087] It should be noted that the parameters shown in Table 1 above are only exemplary and are not specifically limited. For example, more test stages can be divided, such as adding some test stages, during the storage time of the test stage, the ambient temperature rises from a certain temperature to another temperature, or drops from another temperature to a certain temperature, and the range of rise or fall can be different in different test stages. In this case, the actual use environment of plastic parts can be further simulated to improve the effectiveness of the test, and there is no specific limitation.

[0088] In one embodiment, since multiple cycle tests are used, in order to improve accuracy when analyzing deformation test data, required test data can be extracted to increase data validity. For example, taking 10 cycle tests and plastic parts as an example, the process of analyzing and obtaining deformation test results can be as follows:

[0089] During the test, the plastic parts are measured in their original state (12 pieces are taken), and in the 3rd, 5th, 7th, and 10th cycle tests (for example, 3 groups are taken each time, with 10 samples in each group), and the test data are recorded, which may include:

[0090] A. Check the appearance changes of the sample. For example, for the front of the sample, it is necessary to measure the color difference, grayscale, and glossiness; for the back of the sample, it is necessary to measure the grayscale);

[0091] B. Test gloss;

[0092] C. Use a multi-angle spectrophotometer to measure the color difference. Compared with the standard color plate (such as the average of 3 groups of original state data of plastic parts), the color difference △E (measurement angle 45°) should not be greater than 1.5;

[0093] D. Use vernier calipers and feeler gauges to measure deformation and key dimensions;

[0094] E. Measure the tensile strength. Use a fixture to clamp the two ends of the decorative panel (to be cut). Apply tensile force until the cut piece breaks and record the maximum force value.

[0095] According to the deformation test data after the above test, the deformation test results of the deformed sample can be obtained.

[0096] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions loaded in the aforementioned embodiments can still be modified, or some of the technical features therein can be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A deformation test method for plastic parts, characterized in that: The method comprises: Configuring test phase conditions simulating a real driving environment for each test phase, wherein the test phase conditions include corresponding vibration road spectrum conditions, simulated sunlight conditions, ambient temperature conditions, and relative humidity conditions; Performing storage tests on the plastic parts in a plurality of different test stages using corresponding test stage conditions, and recording deformation test data after each test; A deformation test result of the plastic part is obtained according to the deformation test data.

2. The deformation test method according to claim 1, characterized in that: The storage test of the plastic part is performed in a plurality of different test stages using corresponding test stage conditions, including: Under the vibration road spectrum configured in each of the test stages and the simulated sunlight illumination conditions, the storage tests are carried out in a test stage sequence of alternating high temperature test stage and low temperature test stage at least twice, and a transition temperature test stage is also arranged between each high temperature test stage and each low temperature test stage; the test temperature of the high temperature test stage is greater than the test temperature of the transition temperature test stage, and the test temperature of the transition temperature test stage is greater than the test temperature of the low temperature test stage; the test humidity of the high temperature test stage is greater than the test humidity of the transition temperature test stage; the test duration of the high temperature test stage is greater than the test duration of the low temperature test stage, and the test duration of the low temperature test stage is greater than the test duration of the transition temperature test stage.

3. The deformation test method according to claim 2, characterized in that: The test temperature of the high temperature test stage includes a first preset temperature and a second preset temperature, the test temperature of the transition stage includes a third preset temperature, and the test temperature of the low temperature test stage includes a fourth test temperature; the test humidity of the high temperature test stage includes a first preset relative humidity and a second preset relative humidity, and the test humidity of the transition test stage includes a third preset test humidity; the test duration of the high temperature test stage includes a first preset duration and a second preset duration, the test duration of the transition temperature test stage includes a fourth preset duration, and the test duration of the low temperature test stage includes a third preset duration.

4. The deformation test method according to claim 3, characterized in that: Under the vibration road spectrum configured in each of the test stages and the simulated sunlight conditions, the storage test is carried out in a test stage sequence of at least two alternating high temperature test stages and low temperature test stages, including: storing the plastic part for a first preset time period at a first preset temperature and a second preset relative humidity; storing the plastic part at a third preset temperature and a third preset relative humidity for a fourth preset time period; storing the plastic part at a fourth preset temperature for a third preset time; storing the plastic part at a third preset temperature and a third preset relative humidity for a fourth preset time period; storing the plastic part for a second preset time period at a second preset temperature and a first preset relative humidity; storing the plastic part at a third preset temperature and a third preset relative humidity for a fourth preset time period; storing the plastic part at a fourth preset temperature for a third preset time; storing the plastic part at a third preset temperature for a fourth preset time period; Among them, the first preset temperature, the second preset temperature, the third preset temperature and the fourth preset temperature are different temperature ranges, and the first preset time length, the second preset time length, the third preset time length and the fourth preset time length are different time length ranges.

5. The deformation test method according to claim 4, characterized in that: The first preset temperature>the second preset temperature>the third preset temperature>the fourth preset temperature.

6. The deformation test method according to claim 4, characterized in that: The first preset duration>the second preset duration>the third preset duration>the fourth preset duration.

7. The deformation test method according to claim 1, characterized in that: The vibration spectrum conditions include that the duration of each loaded vibration spectrum is adjustable, and the vibration frequency of each loaded vibration spectrum is within a preset frequency range.

8. The deformation test method according to claim 7, characterized in that: The preset frequency range is 8 to 100 Hz.

9. The deformation test method according to claim 1, characterized in that: The storage test is performed on the plastic part using corresponding test stage conditions in a plurality of different test stages, and deformation test data after each test is recorded, including: According to a plurality of different test stages under each cycle test, the storage cycle test is performed on the plastic part using corresponding test stage conditions, and deformation test data after each cycle test is recorded.

10. The deformation test method according to claim 9, characterized in that: The simulated sunlight illumination condition includes a condition in which the simulated sunlight illumination is turned on, and the simulated sunlight illumination is turned on at different test stages in each cycle test.

11. The deformation test method according to claim 1, characterized in that: When the simulated sunlight illumination is turned on, the corresponding illumination temperature is the highest temperature of the plastic part recorded under the actual use condition of the plastic part.

12. A deformation test device for plastic parts, characterized in that: It includes a vibration environment box, a sunlight simulation system and a clamping tool, wherein the clamping tool is used to fix the plastic part to be tested and is connected to the vibration table of the vibration environment box, and the sunlight simulation system is arranged in the vibration environment box, wherein: The vibration environment box is used to provide vibration path spectrum conditions, environmental temperature conditions and relative humidity conditions for the storage test, and the sunlight simulation system is used to provide simulated sunlight conditions for the storage test.

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