Comprehensive performance detection method of room temperature curing resin in high altitude environment
By screening factors such as air pressure, temperature, and ultraviolet radiation intensity in a high-altitude environment, an orthogonal experimental system was constructed to quantify the performance degradation of room-temperature curing resins. This solved the problem of the inability to simulate high-altitude environments in existing technologies, and enabled comprehensive performance evaluation and grading guidance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- DONGFANG ELECTRIC MACHINERY
- Filing Date
- 2026-03-06
- Publication Date
- 2026-05-12
AI Technical Summary
Existing technologies have failed to effectively simulate the performance degradation of room temperature curing resins in high-altitude environments, resulting in test results that cannot reflect the true performance in high-altitude environments. Furthermore, the test methods have not fully covered flowability, curing uniformity, and mechanical properties.
An orthogonal experimental design was adopted to select air pressure, temperature and ultraviolet radiation intensity as key factors to construct an efficient test system. By using indicators such as flow length, viscosity, pot life, degree of cure and tensile strength, the weighted comprehensive operability attenuation coefficient and curing performance compliance coefficient were calculated to quantify the performance of room temperature curing resin in high-altitude environments.
It enables a comprehensive evaluation of the performance of room temperature curing resins in high-altitude environments, quantifies the degradation of their operability and curing performance, provides clear performance grading and application guidance, and ensures the accuracy and comprehensiveness of test results.
Smart Images
Figure CN122016559A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of performance testing technology for room temperature curing resins, and particularly relates to a comprehensive performance testing method for room temperature curing resins in high-altitude environments. Background Technology
[0002] Currently, the standard environmental testing methods for room temperature curing resins, such as epoxy and polyurethane resins, are the mainstream methods for performance testing of room temperature curing resins. These methods revolve around "single performance testing under standard conditions," as detailed below: I. The testing environment strictly adheres to the "standard laboratory conditions". The air pressure is usually set at 1013 hPa ± 5 hPa (close to the normal pressure in low-altitude areas), the temperature is 23℃ ± 2℃, the room temperature is fixed and there is no diurnal fluctuation, the ultraviolet intensity is < 50 W / m², there is no ultraviolet radiation throughout the process and it only relies on ordinary laboratory lighting. In other words, this performance testing method does not simulate the low air pressure, temperature fluctuation or strong ultraviolet environment unique to high-altitude areas. II. Only the basic properties of room temperature curing resins under standard conditions are tested; the testing methods and indicators are limited to: Curing test: Differential scanning calorimeter was used for testing, but it only detected the overall degree of curing of room temperature curing resin after it was fully cured under standard conditions, without distinguishing the curing difference between the surface and inner layers of the sample, so it could not reflect the curing uniformity. Tensile strength test: Standard specimens were prepared according to GB / T1040.1-2018, but the specimens were directly tested after curing in the standard environment, without simulating the curing process in the high-altitude environment. That is, the test results only reflect the mechanical properties under the standard environment. Third, the output results are single performance data under standard conditions, without performance degradation assessment under high-altitude conditions. Summary of the Invention
[0003] To overcome the shortcomings of existing technologies, this invention provides a comprehensive performance testing method for room temperature curing resins in high-altitude environments, which can test the comprehensive performance of room temperature curing resins in high-altitude environments.
[0004] The objective of this invention is achieved through the following technical solution: A method for testing the comprehensive performance of room temperature curing resins in high-altitude environments, comprising the following steps: Three environmental factors—air pressure, temperature, and ultraviolet radiation intensity—were selected for orthogonal experimental design to obtain several experimental altitude environments. The baseline flow length at the first time point was obtained by testing under standard conditions; and the baseline pot life, baseline degree of cure, baseline tensile strength, and baseline curing uniformity were also tested. The flow length at the first time point was measured at each test altitude, and the test pot life, degree of curing, tensile strength and curing uniformity were also measured. The weighted comprehensive operability attenuation coefficient is calculated based on the reference flow length at the first time point, the test flow length at the first time point, the reference applicable period, and the test applicable period. The weighted comprehensive curing performance compliance coefficient is calculated based on the reference degree of curing, the test degree of curing, the reference tensile strength, the test tensile strength, the reference curing uniformity, and the test curing uniformity.
[0005] Furthermore, the weighted comprehensive operability attenuation coefficient, calculated based on the reference flow length at the first time point, the test flow length at the first time point, the reference applicable period, and the test applicable period, includes: The flow rate decay rate is calculated based on the baseline flow length and the test flow length at the first time point, and the applicable period decay rate is calculated based on the baseline applicable period and the test applicable period. The weighted composite operational decay coefficient is calculated based on the liquidity decay rate and the applicable period decay rate. The weighted comprehensive curing performance compliance coefficient is calculated based on the baseline degree of curing, the test degree of curing, the baseline tensile strength, the test tensile strength, the baseline curing uniformity, and the test curing uniformity. The cure rate is calculated based on the baseline cure rate and the test cure rate; the tensile strength rate is calculated based on the baseline tensile strength and the test tensile strength; and the cure uniformity rate is calculated based on the baseline cure uniformity and the test cure uniformity. The weighted comprehensive curing performance compliance coefficient is calculated based on the compliance rates of curing degree, tensile strength, and curing uniformity.
[0006] Furthermore, liquidity decay rate The calculation formula is:
[0007] in, For the first time point t The baseline flow length, For the first time point t The test flow length; Service life attenuation rate The calculation formula is:
[0008] in, For the benchmark applicable period, This is the applicable period for the experiment; Curing degree compliance rate The calculation formula is:
[0009] in, As a baseline degree of cure, To test the degree of curing; Tensile strength compliance rate The calculation formula is:
[0010] in, As the reference tensile strength, To test tensile strength; Curing uniformity compliance rate The calculation formula is:
[0011] in, For the reference curing uniformity, To test the uniformity of curing.
[0012] Furthermore, the formula for calculating the weighted composite operational attenuation coefficient is as follows:
[0013] in, This is the weighted overall operational attenuation coefficient; The formula for calculating the weighted overall curing performance compliance coefficient is as follows:
[0014] in, The weighted average curing performance compliance coefficient.
[0015] Furthermore, based on the weighted comprehensive operational attenuation coefficient and weighted comprehensive curing performance compliance coefficient The comprehensive performance of room temperature curing resins under test altitude conditions is divided into three levels; Among them, if and This indicates that the operability attenuation is small and the curing performance is stable under the test altitude environment; like and This indicates that the operability degradation is controllable and the curing performance basically meets the standards under the test altitude environment; like or If the result is 0, it is classified as Level 3, indicating poor operability or substandard curing performance under the test altitude conditions.
[0016] Furthermore, it includes the following steps: The flow lengths at 10 min, 20 min, and 30 min were measured under standard conditions. , , The viscosity was measured at 10 min, 20 min, and 30 min. , , ; according to , , , , , Fitting the correlation equation:
[0017] in, a and b The coefficients are the fit coefficients; the goodness of fit is also... .
[0018] Furthermore, the test methods for flow length and viscosity are as follows: Pour room temperature curing resin into a standard polytetrafluoroethylene (PTFE) flow channel with a 30° inclination, a depth of 5 mm, a length of 200 mm, and a width of 20 mm. Record the flow length corresponding to each time point and simultaneously measure the viscosity corresponding to each time point using a rotational viscometer.
[0019] Furthermore, the testing method for the applicable period is as follows: Miniature platinum electrodes with a spacing of 5 mm were embedded in room temperature curing resin and the conductivity was monitored in real time. Simultaneously, the wire drawing state was observed by lifting the resin with a glass rod with a diameter of 3 mm and a lifting height of 50 mm. Record the usable period when the conductivity drops to 50% of the initial value and the glass rod can no longer be drawn into a wire.
[0020] Furthermore, the test method for degree of cure is as follows: The enthalpy change of the room temperature curing resin after complete curing was obtained by differential scanning calorimetry under a nitrogen atmosphere and a heating rate of 10℃ / min. The degree of curing is the ratio of the enthalpy change of a room temperature curing resin after complete curing to the theoretical enthalpy change after complete curing. The test method for curing uniformity is as follows: The cured room temperature cured resin sample was divided into a surface layer with a thickness of 1 mm and an inner layer with the remaining thickness. Test the curing degree of the surface layer and the inner layer separately; The difference in curing degree between the surface layer and the inner layer is denoted as curing uniformity.
[0021] Furthermore, three environmental factors—air pressure, temperature, and ultraviolet radiation intensity—were selected for orthogonal experimental design to obtain several experimental altitude environments, including: For the atmospheric pressure environmental factor, we selected two levels: 900 hPa and 1000 hPa. For the temperature environmental factor, we selected three levels: 20℃, 25℃, and 30℃. For the ultraviolet radiation intensity, we selected 100~200 W / m². 2 200~400W / m 2 400~600W / m 2 These three levels; Eighteen different experimental altitude environments were obtained through orthogonal experimental design.
[0022] The beneficial effects of this invention are as follows: The comprehensive performance testing method for room temperature curing resins in high-altitude environments can take into account the influence of high-altitude environments on the performance of room temperature curing resins. It screens three key environmental factors: air pressure, temperature, and ultraviolet radiation intensity, and uses orthogonal experimental design to construct an efficient test system, thereby simulating the low air pressure, temperature fluctuations, or strong ultraviolet radiation environment unique to high-altitude areas. This method for testing the comprehensive performance of room temperature curing resins in high-altitude environments constructs a quantitative testing system that combines operability and curing performance. It establishes a quantitative testing method that corresponds to benchmark values and experimental values, covering all dimensions of operability and curing performance of room temperature curing resins. The comprehensive performance testing method for room temperature curing resins in high-altitude environments is based on benchmark values and experimental values. It calculates two types of weighted comprehensive coefficients: a weighted comprehensive operability attenuation coefficient and a weighted comprehensive curing performance compliance coefficient. This allows for the quantification of the performance of room temperature curing resins in high-altitude environments and, consequently, the assessment of performance degradation in high-altitude environments. Attached Figure Description
[0023] The invention will now be described in more detail with reference to embodiments and the accompanying drawings. Figure 1 A schematic diagram of the process of the present invention is shown; In the accompanying drawings, the same parts use the same reference numerals. The drawings are not to scale. Detailed Implementation
[0024] The invention will now be further described with reference to the accompanying drawings.
[0025] Since the conventional performance testing methods for room temperature curing resins based on standard environments are the mainstream methods for testing the performance of room temperature curing resins such as epoxy and polyurethane resins, their core revolves around "single performance testing under standard environments," as detailed below: I. The testing environment strictly adheres to "standard laboratory conditions," typically setting the air pressure to 1013 hPa ± 5 hPa (close to normal pressure at low altitudes), the temperature to 23℃ ± 2℃, a fixed room temperature with no diurnal fluctuations, a relative humidity of 50% ± 5%, ultraviolet radiation intensity < 50 W / m², and no ultraviolet radiation throughout the process, relying solely on ordinary laboratory lighting. In other words, this performance testing method does not simulate the low air pressure, temperature fluctuations, or strong ultraviolet radiation environment unique to high-altitude areas. 2. Prepare a homogeneous sample by stirring at 300-500 r / min for 3-5 min according to the conventional mixing ratio of room temperature curing resin (e.g., epoxy resin and curing agent are mixed at a mass ratio of 100:40). In other words, this performance testing method does not adjust the mixing process or sample state for high-altitude environments. III. Only the basic properties of room temperature curing resins under standard conditions are tested; the testing methods and indicators are limited to: Flowability test: The single time point flow method was used. Specifically, the resin was poured into a horizontal or fixed tilted glass tank. Only the flow length after 30 minutes of mixing was recorded. The viscosity was not tested at the same time, and no correlation was established between the flow length and the viscosity. Therefore, it was impossible to quantify the change of room temperature curing resin flowability over time. Determination of the applicable period: The single stringing observation method is adopted. Specifically, a glass rod with a diameter of 5mm is lifted from the room temperature curing resin without a fixed height. The time when the string breaks is subjectively judged as the end point of the applicable period. This method is greatly affected by the operator's subjective experience and the error can reach ±10min. Curing test: Differential scanning calorimeter was used for testing, but it only detected the overall degree of curing of room temperature curing resin after it was fully cured under standard conditions, without distinguishing the curing difference between the surface and inner layers of the sample, so it could not reflect the curing uniformity. Tensile strength test: Standard specimens were prepared according to GB / T1040.1-2018, but the specimens were directly tested after curing in the standard environment, without simulating the curing process in the high-altitude environment. That is, the test results only reflect the mechanical properties under the standard environment. Fourth, the output results show only the single performance data under standard conditions, without performance degradation assessment under high-altitude conditions.
[0026] This invention provides a method for testing the comprehensive performance of room temperature curing resins in high-altitude environments, such as... Figure 1 As shown, it includes the following steps: Three environmental factors—air pressure, temperature, and ultraviolet radiation intensity—were selected for orthogonal experimental design to obtain several experimental altitude environments. The baseline flow length at the first time point was obtained by testing under standard conditions; and the baseline pot life, baseline degree of cure, baseline tensile strength, and baseline curing uniformity were also tested. The flow length at the first time point was measured at each test altitude, and the test pot life, degree of curing, tensile strength and curing uniformity were also measured. The weighted comprehensive operability attenuation coefficient is calculated based on the reference flow length at the first time point, the test flow length at the first time point, the reference applicable period, and the test applicable period. The weighted comprehensive curing performance compliance coefficient is calculated based on the reference degree of curing, the test degree of curing, the reference tensile strength, the test tensile strength, the reference curing uniformity, and the test curing uniformity.
[0027] Understandably, this comprehensive performance testing method for room temperature curing resin in high-altitude environments can take into account the influence of high-altitude environments on the performance of room temperature curing resins. It screens three key environmental factors: air pressure, temperature, and ultraviolet radiation intensity, and uses orthogonal experimental design to construct an efficient test system, thereby simulating the low air pressure, temperature fluctuations, or strong ultraviolet radiation environment unique to high-altitude areas. This method for testing the comprehensive performance of room temperature curing resins in high-altitude environments constructs a quantitative testing system that combines operability and curing performance. It establishes a quantitative testing method that corresponds to benchmark values and test values, covering all dimensions of room temperature curing resin operability (flowability, pot life) and curing performance (degree of cure, tensile strength, curing uniformity). The comprehensive performance testing method for room temperature curing resins in high-altitude environments is based on benchmark values and experimental values. It calculates two types of weighted comprehensive coefficients: a weighted comprehensive operability attenuation coefficient and a weighted comprehensive curing performance compliance coefficient. This allows for the quantification of the performance of room temperature curing resins in high-altitude environments and, consequently, the assessment of performance degradation in high-altitude environments.
[0028] In one embodiment, the weighted composite operability attenuation coefficient, calculated based on the reference flow length at the first time point, the test flow length at the first time point, the reference service period, and the test service period, includes: The flow rate decay rate is calculated based on the baseline flow length and the test flow length at the first time point, and the applicable period decay rate is calculated based on the baseline applicable period and the test applicable period. The weighted composite operational decay coefficient is calculated based on the liquidity decay rate and the applicable period decay rate. The weighted comprehensive curing performance compliance coefficient is calculated based on the baseline degree of curing, the test degree of curing, the baseline tensile strength, the test tensile strength, the baseline curing uniformity, and the test curing uniformity. The cure rate is calculated based on the baseline cure rate and the test cure rate; the tensile strength rate is calculated based on the baseline tensile strength and the test tensile strength; and the cure uniformity rate is calculated based on the baseline cure uniformity and the test cure uniformity. The weighted comprehensive curing performance compliance coefficient is calculated based on the compliance rates of curing degree, tensile strength, and curing uniformity.
[0029] In one embodiment, liquidity decay rate The calculation formula is:
[0030] in, For the first time point t The baseline flow length, For the first time point t The test flow length; Service life attenuation rate The calculation formula is:
[0031] in, For the benchmark applicable period, This is the applicable period for the experiment; Curing degree compliance rate The calculation formula is:
[0032] in, As a baseline degree of cure, To test the degree of curing; Tensile strength compliance rate The calculation formula is:
[0033] in, As the reference tensile strength, To test tensile strength; Curing uniformity compliance rate The calculation formula is:
[0034] in, For the reference curing uniformity, To test the uniformity of curing.
[0035] In one embodiment, the formula for calculating the weighted overall operational attenuation coefficient is:
[0036] in, This is the weighted overall operational attenuation coefficient; The formula for calculating the weighted overall curing performance compliance coefficient is as follows:
[0037] in, The weighted average curing performance compliance coefficient.
[0038] In one embodiment, the following steps are included: The flow lengths at 10 min, 20 min, and 30 min were measured under standard conditions. , , The viscosity was measured at 10 min, 20 min, and 30 min. , , ; according to , , , , , Fitting the correlation equation:
[0039] in, a and b The coefficients are the fit coefficients; the goodness of fit is also... .
[0040] The following is a detailed method for testing the comprehensive performance of room temperature curing resins in high-altitude environments, which includes the following steps: Step S1: Through mechanistic analysis of the influence of high-altitude environment on the performance of room temperature curing resin, three core experimental factors were selected: air pressure, temperature, and ultraviolet radiation intensity. For air pressure, two levels were selected: low pressure and normal pressure, specifically 900 hPa and 1000 hPa respectively. For temperature, three levels were selected: 20℃, 25℃, and 30℃. For ultraviolet radiation intensity, three levels were selected: low, medium, and high, corresponding to ultraviolet radiation intensities of 100~200 W / m² respectively. 2 (Equivalent to ultraviolet radiation intensity under cloudy or overcast weather conditions), ultraviolet radiation intensity is 200~400W / m 2 (Equivalent to standard ultraviolet radiation intensity under clear weather conditions), ultraviolet radiation intensity is 400~600W / m 2 (Equivalent to the intensity of strong ultraviolet radiation in high-altitude areas or under intense sunlight); orthogonal experimental design is used for the test table (such as L18(2)). 1 ×3 2 An orthogonal array with 18 experimental altitude environments can efficiently cover 18 environmental combinations to avoid redundancy in full-factor experiments. Step S2: Prepare room temperature curing resin samples under standard conditions, and test the following initial performance indicators as subsequent comparison benchmarks: Flowability: Dynamic flow-viscosity correlation test was used. Room temperature curing resin was poured into a standard PTFE flow tank with an inclination of 30°, a depth of 5 mm, a length of 200 mm, and a width of 20 mm. The flow length was recorded at 10 min, 20 min, and 30 min after mixing. , , The viscosity at corresponding time points was measured simultaneously using an NDJ-5S rotational viscometer with an accuracy of ±5%. , , Fitting correlation equations ( a and b The fitting coefficients and the goodness of fit are: Additionally, when the converted viscosity exceeds 5000 mPa... When the time reaches s, it is determined that the material has lost its construction fluidity and the test is stopped; Potential service life: The conductivity-assisted gel determination method was used. Micro-platinum electrodes with a spacing of 5 mm and an accuracy of ±0.1 μS / cm were embedded in the room-temperature curing resin to monitor conductivity in real time. Simultaneously, a 3 mm diameter glass rod was used to lift the resin to observe the fiber-drawing state, with a lifting height of 50 mm. The baseline pot life was recorded when the conductivity dropped to 50% of its initial value and the glass rod could no longer be drawn into fibers. ; Degree of Curing: The enthalpy change of the room-temperature curing resin after complete curing was measured using a differential scanning calorimeter at a heating rate of 10℃ / min under a nitrogen atmosphere. The ratio of the enthalpy change of the room-temperature curing resin after complete curing to the theoretical enthalpy change of complete curing was calculated and recorded as the baseline degree of curing. ; Tensile strength: Prepare standard specimens according to GB / T1040.1-2018, test the tensile strength after curing and record it as follows. (Unit: MPa); Curing uniformity: The cured sample is divided into a surface layer with a thickness of 1 mm and an inner layer with the remaining thickness. The degree of curing of the surface layer and the inner layer are tested separately, and the difference between the two is calculated and recorded as the baseline curing uniformity. (unit:%); Step S2: Following the test methods for flow length, viscosity, pot life, degree of cure, tensile strength, and curing uniformity in Step S2, obtain the test flow length at each test altitude. , , The corresponding test viscosity was recorded, along with the test service life at each test altitude. Test degree of cure of room temperature curing resin after 72 hours of room temperature curing under low pressure Tensile strength test and test curing uniformity ; Step S4: Based on the baseline value from Step S2 and the experimental value from Step S3, calculate the weighted composite operational attenuation coefficient. and weighted comprehensive curing performance compliance coefficient These two types of core coefficients; among them, the weighted composite operational attenuation coefficient. This reflects the degree of decline in the workability of room temperature curing resins at high altitudes, including the rate of decrease in flowability. and service life attenuation rate ,and , , Weighted average curing performance compliance coefficient It can reflect the degree to which room temperature curing resins meet the curing performance standards at high altitudes, including the degree of curing compliance rate. Tensile strength compliance rate and the rate of compliance with curing uniformity ,and , , , ; Step S5: Based on the weighted composite operational attenuation coefficient and weighted comprehensive curing performance compliance coefficient The overall performance of room temperature curing resins under experimental altitude conditions was classified into three levels, and the application scenarios were clearly defined: Level 1: and This indicates that the room temperature curing resin exhibits minimal operational degradation, stable curing performance, and can be directly applied to core scenarios at the test altitude. Level 2: and This indicates that the room temperature curing resin has controllable operability degradation and basically meets the curing performance under the test altitude environment. It can be applied to non-core scenarios after optimization by adjusting the construction time. Level 3: or This indicates that the room temperature curing resin has poor operability or fails to meet curing performance standards at the test altitude, and requires material modification or system replacement.
[0041] Understandably, this method for testing the comprehensive performance of room-temperature curing resins in high-altitude environments provides a three-tiered performance classification and application guidance system, specifically based on a weighted comprehensive operability attenuation coefficient. and weighted comprehensive curing performance compliance coefficient The numerical range is defined, and the overall performance of room temperature curing values in high-altitude environments is divided into three levels, with clear engineering application recommendations.
[0042] Additionally, L18(2 1 ×3 2 The orthogonal array is detailed in the table below.
[0043]
[0044] In the description of this invention, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.
[0045] While the invention has been described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed without departing from the spirit and scope of the invention as defined by the appended claims. It should be understood that different dependent claims and features described herein can be combined in ways different from those described in the original claims. It is also understood that features described in conjunction with individual embodiments can be used in other described embodiments.
Claims
1. A method for testing the comprehensive performance of room temperature curing resins in high-altitude environments, characterized in that, Includes the following steps: Three environmental factors—air pressure, temperature, and ultraviolet radiation intensity—were selected for orthogonal experimental design to obtain several experimental altitude environments. The baseline flow length at the first time point was obtained by testing under standard conditions; The baseline pot life, baseline degree of cure, baseline tensile strength, and baseline curing uniformity were tested and obtained. The flow length at the first time point was measured at each test altitude, and the test pot life, degree of curing, tensile strength and curing uniformity were also measured. The weighted comprehensive operability attenuation coefficient is calculated based on the reference flow length at the first time point, the test flow length at the first time point, the reference applicable period, and the test applicable period. The weighted comprehensive curing performance compliance coefficient is calculated based on the reference degree of curing, the test degree of curing, the reference tensile strength, the test tensile strength, the reference curing uniformity, and the test curing uniformity.
2. The method for comprehensive performance testing of room temperature curing resin in high-altitude environments according to claim 1, characterized in that, The weighted comprehensive operability attenuation coefficient, calculated based on the reference flow length at the first time point, the test flow length at the first time point, the reference applicable period, and the test applicable period, includes: The flow rate decay rate is calculated based on the baseline flow length and the test flow length at the first time point, and the applicable period decay rate is calculated based on the baseline applicable period and the test applicable period. The weighted composite operational decay coefficient is calculated based on the liquidity decay rate and the applicable period decay rate. The weighted comprehensive curing performance compliance coefficient, calculated based on the reference degree of curing, test degree of curing, reference tensile strength, test tensile strength, reference curing uniformity, and test curing uniformity, includes: The cure rate is calculated based on the baseline cure rate and the test cure rate; the tensile strength rate is calculated based on the baseline tensile strength and the test tensile strength; and the cure uniformity rate is calculated based on the baseline cure uniformity and the test cure uniformity. The weighted comprehensive curing performance compliance coefficient is calculated based on the compliance rates of curing degree, tensile strength, and curing uniformity.
3. The method for testing the comprehensive performance of room temperature curing resin in high-altitude environments according to claim 2, characterized in that, Liquidity depletion rate The calculation formula is: in, For the first time point t The baseline flow length, For the first time point t The test flow length; Service life attenuation rate The calculation formula is: in, For the benchmark applicable period, This is the applicable period for the experiment; Curing degree compliance rate The calculation formula is: in, As a baseline degree of cure, To test the degree of curing; Tensile strength compliance rate The calculation formula is: in, As the reference tensile strength, To test tensile strength; Curing uniformity compliance rate The calculation formula is: in, For the reference curing uniformity, To test the uniformity of curing.
4. The method for comprehensive performance testing of room temperature curing resin in high-altitude environments according to claim 3, characterized in that, The formula for calculating the weighted overall operational attenuation coefficient is as follows: in, This is the weighted overall operational attenuation coefficient; The formula for calculating the weighted overall curing performance compliance coefficient is as follows: in, The weighted average curing performance compliance coefficient.
5. The method for testing the comprehensive performance of room temperature curing resin in high-altitude environments according to claim 4, characterized in that, Based on the weighted comprehensive operational attenuation coefficient and weighted comprehensive curing performance compliance coefficient The comprehensive performance of room temperature curing resins under test altitude conditions is divided into three levels; Among them, if and This indicates that the operability attenuation is small and the curing performance is stable under the test altitude environment; like and This indicates that the operability degradation is controllable and the curing performance basically meets the standards under the test altitude environment; like or If the result is 0, it is classified as Level 3, indicating poor operability or substandard curing performance under the test altitude conditions.
6. The method for testing the comprehensive performance of room temperature curing resin in high-altitude environments according to claim 1, characterized in that, Includes the following steps: The flow lengths at 10 min, 20 min, and 30 min were measured under standard conditions. , , The viscosity was measured at 10 min, 20 min, and 30 min. , , ; according to , , , , , Fitting the correlation equation: in, a and b The coefficients are the fit coefficients; the goodness of fit is also... .
7. The method for testing the comprehensive performance of room temperature curing resin in high-altitude environments according to claim 6, characterized in that, The test methods for flow length and viscosity are as follows: Pour room temperature curing resin into a standard polytetrafluoroethylene (PTFE) flow channel with a 30° inclination, a depth of 5 mm, a length of 200 mm, and a width of 20 mm. Record the flow length corresponding to each time point and simultaneously measure the viscosity corresponding to each time point using a rotational viscometer.
8. The method for testing the comprehensive performance of room temperature curing resin in high-altitude environments according to claim 1, characterized in that, The testing method for the applicable period is as follows: Miniature platinum electrodes with a spacing of 5 mm were embedded in room temperature curing resin and the conductivity was monitored in real time. Simultaneously, the wire drawing state was observed by lifting the resin with a glass rod with a diameter of 3 mm and a lifting height of 50 mm. Record the usable period when the conductivity drops to 50% of the initial value and the glass rod can no longer be drawn into a wire.
9. The method for testing the comprehensive performance of room temperature curing resin in high-altitude environments according to claim 1, characterized in that, The test method for degree of cure is as follows: The enthalpy change of the room temperature curing resin after complete curing was obtained by differential scanning calorimetry under a nitrogen atmosphere and a heating rate of 10℃ / min. The degree of curing is the ratio of the enthalpy change of a room temperature curing resin after complete curing to the theoretical enthalpy change after complete curing. The test method for curing uniformity is as follows: The cured room temperature cured resin sample was divided into a surface layer with a thickness of 1 mm and an inner layer with the remaining thickness. Test the curing degree of the surface layer and the inner layer separately; The difference in curing degree between the surface layer and the inner layer is denoted as curing uniformity.
10. The method for testing the comprehensive performance of room temperature curing resins under high altitude conditions according to any one of claims 1-9, characterized in that, The selection of three environmental factors—air pressure, temperature, and ultraviolet radiation intensity—into an orthogonal experimental design yielded several experimental altitude environments, including: For the atmospheric pressure environmental factor, we selected two levels: 900 hPa and 1000 hPa. For the temperature environmental factor, we selected three levels: 20℃, 25℃, and 30℃. For the ultraviolet radiation intensity, we selected 100~200 W / m². 2 200~400W / m 2 400~600W / m 2 These three levels; Eighteen different experimental altitude environments were obtained through orthogonal experimental design.