Accelerated aging test device and method for down-proof performance of down products

Abstract

The application provides an accelerated aging test device and test method for the anti-drilling performance of down products, relates to the technical field of down product detection, and comprises a sample clamping module, a circulating washing and drying module, a dynamic friction and extrusion module, a down drilling collection and counting module, an environmental parameter control module and a central control and data analysis module. The sample clamping module is used for flatly fixing a down product sample to be tested. The circulating washing and drying module is used for performing a circulating washing and drying treatment on the sample to simulate actual use conditions. The application integrates various functional modules such as the circulating washing and drying, dynamic friction and extrusion and environmental parameter control, can simulate various aging factors faced by the down product in the actual use process, realizes comprehensive evaluation of the anti-drilling performance, and can quickly obtain the aging trend of the anti-drilling performance of the sample by setting reasonable accelerated aging parameters and multi-stage data collection, and can better reflect the long-term use performance of the product.

Description

Technical Field

[0001] This invention relates to the field of down product testing technology, and in particular to an accelerated aging test device and test method for the down-proof performance of down products. Background Technology

[0002] The down-proof performance of down products is a key indicator of their quality and directly affects the consumer experience. Currently, commonly used down-proof testing methods in the industry primarily test the product in its initial state, reflecting only its down-proof level at the time of manufacture. However, in actual use, down products undergo multiple washes, drying, friction, compression, and temperature and humidity changes, leading to issues such as fabric structure loosening, down-proof finishing agent failure, and fiber morphology recovery, thus gradually reducing their down-proof performance. Traditional testing methods do not consider the combined effects of these long-term aging factors, making it impossible to assess the down-proof durability of products throughout their lifecycle. This results in some products initially meeting testing standards but experiencing frequent down leakage after a period of use. Furthermore, existing testing devices are limited in function, only capable of testing single factors such as friction or rotating chambers, lacking the ability to simulate accelerated aging with multiple coupled factors. They also suffer from low testing efficiency and poor data reproducibility. Therefore, this invention proposes an accelerated aging testing device and method for the down-proof performance of down products to address the problems existing in the prior art. Summary of the Invention

[0003] To address the aforementioned issues, this invention proposes an accelerated aging test device and method for the down-proof performance of down products. It integrates multiple functional modules, including cyclic washing and drying, dynamic friction and compression, and environmental parameter control. This device can simulate various aging factors faced by down products during actual use, enabling a comprehensive evaluation of their down-proof performance. By setting reasonable accelerated aging parameters and multi-stage data acquisition, it can quickly obtain the aging trend of the sample's down-proof performance, providing a better reflection of the product's long-term performance compared to traditional testing methods.

[0004] To achieve the objectives of this invention, the invention is implemented through the following technical solution: an accelerated aging test device for the down-proof performance of down products, comprising a sample clamping module, a circulating washing and drying module, a dynamic friction and extrusion module, a down-proof collection and counting module, an environmental parameter control module, and a central control and data analysis module. The sample clamping module is used to flatten and fix the down product sample to be tested; the circulating washing and drying module is used to perform circulating washing and drying treatment on the sample under simulated actual use conditions to accelerate the aging of the sample. The dynamic friction and extrusion module is used to apply controllable friction and extrusion forces to the sample surface to simulate mechanical wear during use; the down collection and counting module is used to capture down / feathers that emerge from the sample and count them automatically; the environmental parameter control module is used to adjust the temperature, humidity and air pressure of the test environment; the central control and data analysis module is used to control the coordinated work of each module and to analyze and process the test data.

[0005] Further improvements are made in that: the circulating washing and drying module includes a washing unit and a drying unit. The washing unit is equipped with a temperature sensor, a time controller and a liquid level controller, which are used to set the washing temperature to 30-60℃, the washing time to 10-30min and the number of washing cycles to 1-10. The drying unit is equipped with a hot air generator and a humidity sensor, which are used to set the drying temperature to 40-80℃ and the drying time to 30-90min.

[0006] A further improvement is that the dynamic friction extrusion module includes a friction head, a pressure adjustment unit, and a drive unit. The friction head is made of cotton or chemical fiber fabric. The pressure adjustment unit is used to adjust the pressure of the friction head on the sample from 0.5 to 2.0 kPa. The drive unit is used to adjust the friction frequency from 10 to 30 times / min and the friction time from 30 to 120 min.

[0007] Further improvements include: the environmental parameter control module includes a temperature regulator, a humidity regulator, and a pressure regulator, used to adjust the temperature of the test environment to 15-35℃, the relative humidity to 30%-70%, and the air pressure to 90-110kPa.

[0008] A further improvement is made in that the central control and data analysis module has a built-in accelerated aging assessment algorithm, the calculation formula of which is: A=k1×(W / W0)+k2×(F / F0)+k3×(T / T0) Where A is the accelerated aging index, k1, k2, and k3 are the influence weight coefficients of washing, friction, and temperature, respectively, and k1+k2+k3=1, W is the actual number of washes, W0 is the standard number of washes (taken as 50 times), F is the actual total number of frictions, F0 is the standard total number of frictions (taken as 10,000 times), T is the actual aging temperature, and T0 is the standard ambient temperature (taken as 25℃).

[0009] An accelerated aging test method for the down-proof performance of down products includes the following steps: S1: Select the down product sample to be tested, cut it to the specified size, and measure its initial air permeability and initial down leakage count; S2: Fix the sample on the sample clamping module; S3: Set the circulating washing and drying parameters, dynamic friction and extrusion parameters, environmental parameters, and total test duration through the central control and data analysis module; S4: The central control and data analysis module controls the circulating washing and drying module, the dynamic friction and extrusion module, and the environmental parameter control module to work together according to the set parameters to accelerate the aging of the sample; during the aging process, the down collection and counting module captures and records the number of down / feathers that have been extracted from the sample in real time. S5: After the test, the central control and data analysis module collects down leakage count data and sample air permeability change data at each stage, and analyzes them through the built-in algorithm to evaluate the aging trend of the sample's down leakage prevention performance. S6: Output a report evaluating the down-proof performance of the sample at different aging stages.

[0010] Further improvements are made in the following aspects: In S3, the circulating washing and drying parameters include washing temperature of 30-60℃, washing time of 10-30min, washing times of 1-10, drying temperature of 40-80℃, and drying time of 30-90min; the dynamic friction and extrusion parameters include friction pressure of 0.5-2.0kPa, friction frequency of 10-30 times / min, and friction time of 30-120min; and the environmental parameters include temperature of 15-35℃, relative humidity of 30%-70%, and air pressure of 90-110kPa.

[0011] A further improvement is that, in S5, the built-in algorithm includes a down-seeking trend prediction algorithm, the calculation formula of which is: N(t) = N0 × e α×t+β×t² Where N(t) is the predicted number of down feathers at aging time t, N0 is the initial number of down feathers, α and β are fitting coefficients, which are obtained by fitting the actual down feather data of the first 3 stages of the test, and t is the aging time.

[0012] A further improvement is that, in S5, the central control and data analysis module simultaneously uses an accelerated aging assessment algorithm for analysis.

[0013] A further improvement is made in S4, where, during the dynamic friction extrusion process, the dynamic friction extrusion module adjusts the friction pressure and friction frequency based on the real-time feedback of the down collection and counting module, using an adaptive adjustment algorithm. The calculation formula for the adaptive adjustment algorithm is as follows: P = P0 + k × (N - Ns) f = f0 + m × (N - Ns) Where P is the adjusted friction pressure, P0 is the initial friction pressure, k is the pressure adjustment coefficient, N is the real-time down leakage count, Ns is the set down leakage count threshold, f is the adjusted friction frequency, f0 is the initial friction frequency, and m is the frequency adjustment coefficient.

[0014] The beneficial effects of this invention are as follows: 1. This invention integrates multiple functional modules such as cyclic washing and drying, dynamic friction and extrusion, and environmental parameter control. It can simulate various aging factors faced by down products in actual use, and achieve a comprehensive evaluation of down-proof performance. By setting reasonable accelerated aging parameters and multi-stage data acquisition, it can quickly obtain the aging trend of the down-proof performance of the sample, which can better reflect the long-term performance of the product compared with traditional testing methods.

[0015] 2. This invention improves the accuracy and reliability of test data analysis through built-in accelerated aging assessment algorithm, down leakage trend prediction algorithm and adaptive adjustment algorithm, providing a scientific quantitative basis for optimizing the down leakage prevention process of down products. It is applicable to different types of down products and fabrics and has wide adaptability. Attached Figure Description

[0016] Figure 1 This is the main view of the system of the present invention; Figure 2 This is a flowchart of the method of the present invention. Detailed Implementation

[0017] To enhance understanding of the present invention, the present invention will be further described in detail below with reference to embodiments. These embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention. Example 1

[0018] according to Figure 1 , 2 As shown in the figure, this embodiment proposes an accelerated aging test device and test method for the down-proof performance of down products. The test uses a cotton T233 downproof fabric treated with traditional technology, and a down comforter core filled with 50% white duck down of EN12934 II grade. The initial down-proof number (rotating box method) is 58, and the initial air permeability is 26mm / s.

[0019] Accelerated aging test: The circulating washing parameters were set as follows: water temperature of 40℃, 20min / cycle, 6 washes; dynamic friction parameters were set as follows: pressure of 1.2kPa, frequency of 20 times / min, cumulative friction of 12,000 times; ambient temperature of 25℃, humidity of 50%, and accelerated test duration of 100h.

[0020] Tested for 30 hours (simulating 2 months of natural use): 72 down fibers were observed, and the air permeability was 24mm / s. Tested for 60 hours (simulating 4 months of natural use): 95 down fibers were observed, and the air permeability was 22mm / s. Tested for 100 hours (simulating 6 months of natural use): 128 down fibers were observed, and the air permeability was 20mm / s.

[0021] Natural Aging Comparison Test: Three identical comforters were selected and subjected to natural aging for 6 months under normal household use conditions (washed once a month, with an average of about 5 hours of friction contact per day).

[0022] Two months later: 68 down fibers were observed, and the breathability was 24.5 mm / s; Four months later: 92 down threads were observed, and the breathability was 22.3 mm / s; After 6 months: 125 down threads, breathability 20.2mm / s.

[0023] Verification results: The trends in down leakage count and air permeability changes in accelerated aging test and natural aging test are completely consistent, and the data deviation at each stage is less than 5%, indicating that accelerated aging test can accurately simulate the aging process during natural use. Example 2

[0024] according to Figure 1 , 2 As shown in the figure, this embodiment proposes an accelerated aging test device and test method for the down-proof performance of down products. The all-cotton T233 fabric treated with optimized down-proof process (high solid content additive + multi-pass calendering) is filled with 70% white duck down of EN12934II grade. The initial down-proof number is 22 and the initial air permeability is 21mm / s.

[0025] Accelerated aging test: The circulating washing parameters were set as follows: water temperature of 45℃, 25min / cycle, 8 washes; dynamic friction parameters were set as follows: pressure of 1.5kPa, frequency of 25 times / min, cumulative friction of 15,000 times; ambient temperature of 30℃, humidity of 60%, and accelerated test duration of 150h.

[0026] 50-hour test (simulating 4 months of manual testing): 28 down fibers, air permeability 20mm / s; 100-hour test (simulating 8 months of manual testing): 35 down fibers perforated, air permeability 19mm / s; Tested for 150 hours (simulating 12 months of artificial testing): 42 down fibers were found, and the air permeability was 18mm / s.

[0027] Long-term artificial simulation test: The laboratory simulates daily use conditions (washed twice a month, mechanical friction device rubbed for 8 hours a day, pressure 1.0 kPa) for 12 months.

[0028] Four months later: 27 down fibers were found, and the breathability was 20.2 mm / s; After 8 months: 34 down fibers were observed, and the breathability was 19.1 mm / s; After 12 months: 41 down threads, breathability 18.2mm / s.

[0029] Verification results: The down leakage growth trend of accelerated aging test and artificial long-term simulation test is highly consistent, with the data deviation of each stage being less than 3%, and the air permeability change curves almost overlap, proving that accelerated aging test can accurately reproduce the performance degradation process during long-term use. Example 3

[0030] according to Figure 1 , 2 As shown in the figure, this embodiment proposes an accelerated aging test device and test method for the down-proof performance of down products. The traditional process (conventional down-proof finishing) and the optimized process (high solids content additives + pre-shrinking calendering) were selected. All cotton T233 fabrics were filled with EN12934II grade 50% white duck down, and three comforters were selected for each process.

[0031] Accelerated aging test: The uniform parameters are: washing at 50℃, 20min / cycle, 10 cycles; friction at 1.0kPa, 22 times / min, 20,000 times in total; ambient temperature at 28℃ and humidity at 55%, test duration of 200h (simulating 1 year of natural aging).

[0032] Traditional process sample: 210 down fibers after 200 hours, air permeability 17mm / s; Optimized process sample: After 200 hours, the number of down fibers is 65, and the air permeability is 16mm / s.

[0033] Natural aging test for 1 year: The sample was used in a hotel room for 1 year (washed 3 times a month, with 8 hours of friction contact per day).

[0034] Traditional process sample: After 1 year, the number of down fibers leaking out was 205, and the air permeability was 17.2mm / s; Optimized process sample: After 1 year, the number of down fibers was 63, and the air permeability was 16.1 mm / s.

[0035] Verification results: The performance difference trends of the two process samples were completely consistent in the accelerated aging test and the natural aging test after 1 year (the down leakage of the optimized process was only 31%-32% of that of the traditional process), and the specific numerical deviations were all less than 3%. This shows that the accelerated aging test can not only effectively distinguish the down leakage resistance of different processes, but also the results are highly consistent with long-term natural aging.

[0036] Verification data: Table 1, Summary of accelerated aging test and comparative test results Sample type Test methods Test duration Number of down threads (threads) Breathability (mm / s) Deviation rate compared to comparative test Traditional craftsmanship 50% white duck down comforter filling Accelerated aging test 100 hours (6-month simulation) 128 20 ＜5% Traditional craftsmanship 50% white duck down comforter filling Natural aging test 6 months 125 20.2 - Optimized process, 70% white duck down comforter core Accelerated aging test 150 hours (12-month simulation) 42 18 ＜3% Optimized process, 70% white duck down comforter core Long-term artificial simulation test 12 months 41 18.2 - Traditional craftsmanship 50% white duck down comforter filling Accelerated aging test 200 hours (1-year simulation) 210 17 ＜3% Traditional craftsmanship 50% white duck down comforter filling Natural aging test 1 year test 1 year 205 17.2 - Optimized process, 50% white duck down comforter core Accelerated aging test 200 hours (1-year simulation) 65 16 ＜3% Optimized process, 50% white duck down comforter core Natural aging test 1 year test 1 year 63 16.1 - The results of accelerated aging tests, natural aging tests, and long-term artificial simulation tests of this invention are highly consistent in terms of the number of down fibers, the trend of changes in air permeability, and specific values, with a deviation rate of less than 5%. This verifies the effectiveness and accuracy of the invention, which can realistically simulate long-term aging and provides accurate and reliable data.

[0037] This invention integrates multiple functional modules such as cyclic washing and drying, dynamic friction and extrusion, and environmental parameter control. It can simulate various aging factors faced by down products during actual use, enabling a comprehensive evaluation of down-proof performance. By setting reasonable accelerated aging parameters and multi-stage data acquisition, it can quickly obtain the aging trend of the sample's down-proof performance, reflecting the long-term performance of the product better than traditional testing methods. Simultaneously, this invention improves the accuracy and reliability of test data analysis through built-in accelerated aging degree evaluation algorithms, down-proof trend prediction algorithms, and adaptive adjustment algorithms, providing a scientific quantitative basis for optimizing down-proof processes in down products. It is applicable to different types of down products and fabrics, exhibiting broad adaptability.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An accelerated aging test device for the down-proof performance of down products, comprising a sample clamping module, a circulating washing and drying module, a dynamic friction and extrusion module, a down-proof collection and counting module, an environmental parameter control module, and a central control and data analysis module, characterized in that: The sample clamping module is used to flatten and fix the down product sample to be tested; The circulating washing and drying module is used to perform cyclic washing and drying treatment on the sample under simulated actual use conditions in order to accelerate the aging of the sample. The dynamic friction and extrusion module applies controllable friction and extrusion forces to the sample surface to simulate mechanical wear during use. The down fiber collection and counting module captures and automatically counts the down fibers / fingers emerging from the sample. Based on the real-time feedback of the down fiber quantity from the down fiber collection and counting module, the dynamic friction and extrusion module adjusts the friction pressure and friction frequency using an adaptive adjustment algorithm. The calculation formula for the adaptive adjustment algorithm is as follows: P = P0 + k × (N - Ns) f = f0 + m × (N - Ns) Where P is the adjusted friction pressure, P0 is the initial friction pressure, k is the pressure adjustment coefficient, N is the real-time down leakage count, Ns is the set down leakage count threshold, f is the adjusted friction frequency, f0 is the initial friction frequency, and m is the frequency adjustment coefficient. The environmental parameter control module is used to adjust the temperature, humidity and air pressure of the test environment; the central control and data analysis module is used to control the coordinated work of each module and to analyze and process the test data. The central control and data analysis module has a built-in accelerated aging assessment algorithm, and its calculation formula is as follows: A=k1×(W / W0)+k2×(F / F0)+k3×(T / T0) Where A is the accelerated aging index, k1, k2, and k3 are the influence weight coefficients of washing, friction, and temperature, respectively, and k1+k2+k3=1, W is the actual number of washes, W0 is the standard number of washes (taken as 50 times), F is the actual total number of frictions, F0 is the standard total number of frictions (taken as 10,000 times), T is the actual aging temperature, and T0 is the standard ambient temperature (taken as 25℃).

2. The accelerated aging test device for the down-proof performance of down products according to claim 1, characterized in that: The circulating washing and drying module includes a washing unit and a drying unit. The washing unit is equipped with a temperature sensor, a time controller, and a liquid level controller to set the washing temperature to 30-60℃, the washing time to 10-30min, and the number of washing cycles to 1-10. The drying unit is equipped with a hot air generator and a humidity sensor to set the drying temperature to 40-80℃ and the drying time to 30-90min.

3. The accelerated aging test device for the down-proof performance of down products according to claim 1, characterized in that: The dynamic friction extrusion module includes a friction head, a pressure adjustment unit, and a drive unit. The friction head is made of cotton or chemical fiber fabric. The pressure adjustment unit is used to adjust the pressure of the friction head on the sample from 0.5 to 2.0 kPa. The drive unit is used to adjust the friction frequency from 10 to 30 times / min and the friction time from 30 to 120 min.

4. The accelerated aging test device for the down-proof performance of down products according to claim 1, characterized in that: The environmental parameter control module includes a temperature regulator, a humidity regulator, and a pressure regulator, used to adjust the temperature of the test environment to 15-35℃, the relative humidity to 30%-70%, and the pressure to 90-110kPa.

5. An accelerated aging test method for the down-proof performance of down products, comprising the accelerated aging test apparatus for the down-proof performance of down products as described in any one of claims 1-4, characterized in that, Includes the following steps: S1: Select the down product sample to be tested, cut it to the specified size, and measure its initial air permeability and initial down leakage count; S2: Fix the sample on the sample clamping module; S3: Set the circulating washing and drying parameters, dynamic friction and extrusion parameters, environmental parameters, and total test duration through the central control and data analysis module; S4: The central control and data analysis module controls the circulating washing and drying module, the dynamic friction and extrusion module, and the environmental parameter control module to work together according to the set parameters to accelerate the aging of the sample; during the aging process, the down collection and counting module captures and records the number of down / feathers that have been extracted from the sample in real time. S5: After the test, the central control and data analysis module collects down leakage count data and sample air permeability change data at each stage, and analyzes them through the built-in algorithm to evaluate the aging trend of the sample's down leakage prevention performance. S6: Output a report evaluating the down-proof performance of the sample at different aging stages.

6. The accelerated aging test method for the down-proof performance of down products according to claim 5, characterized in that: In S3, the circulating washing and drying parameters include washing temperature 30-60℃, washing time 10-30min, washing times 1-10 times, drying temperature 40-80℃, and drying time 30-90min; the dynamic friction and extrusion parameters include friction pressure 0.5-2.0kPa, friction frequency 10-30 times / min, and friction time 30-120min; the environmental parameters include temperature 15-35℃, relative humidity 30%-70%, and air pressure 90-110kPa.

7. The accelerated aging test method for the down-proof performance of down products according to claim 5, characterized in that: In S5, the built-in algorithm includes a down-seeking trend prediction algorithm, the calculation formula of which is: Where N(t) is the predicted number of down fibers at aging time t, and N0 is the initial number of down fibers. is the fitting coefficient, which is obtained by fitting the actual down-draining data of the first three stages of the test process, and t is the aging time.

8. The accelerated aging test method for the down-proof performance of down products according to claim 7, characterized in that: In S5, the central control and data analysis module simultaneously uses an accelerated aging assessment algorithm for analysis.

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