CN-122016559-A - Comprehensive performance detection method of room-temperature cured resin in high-altitude environment

CN122016559ACN 122016559 ACN122016559 ACN 122016559ACN-122016559-A

Abstract

The invention discloses a method for detecting comprehensive performance of room-temperature curing resin in a high-altitude environment, which comprises the following steps of selecting three environmental factors of air pressure, temperature and ultraviolet radiation intensity for orthogonal test design to obtain a plurality of test altitude environments, testing in a standard environment to obtain a reference flow length of a first time point, testing in each test altitude environment to obtain a reference applicable period, a reference curing degree, a reference tensile strength and a reference curing uniformity, testing in each test altitude environment to obtain a test flow length of the first time point, testing in each test altitude environment to obtain a test applicable period, a test curing degree, a test tensile strength and a test curing uniformity, and calculating to obtain a weighted comprehensive operability attenuation coefficient and a weighted comprehensive curing performance standard coefficient. The invention can simulate the special low-pressure, temperature fluctuation or strong ultraviolet environment of the high-altitude area and evaluate the performance attenuation of the room-temperature curing resin in the high-altitude environment, thereby being capable of detecting the comprehensive performance of the room-temperature curing resin in the high-altitude environment.

Inventors

ZHOU JIANG
CAI HAOHAO
Zhang Genbo
LI BO
ZUO RUI
ZHANG YUE
XIE ZHIHUI
YANG SHUAI
CHENG SHENG

Assignees

东方电气集团东方电机有限公司

Dates

Publication Date: 20260512
Application Date: 20260306

Claims (10)

1. The method for detecting the comprehensive performance of the room-temperature curing resin in the high-altitude environment is characterized by comprising the following steps of: The method comprises the steps of selecting three environmental factors of air pressure, temperature and ultraviolet radiation intensity for orthogonal test design so as to design and obtain a plurality of test altitude environments; Testing in a standard environment to obtain a reference flowing length at a first time point, and testing to obtain a reference applicable period, a reference curing degree, a reference tensile strength and a reference curing uniformity; Testing under each test altitude environment to obtain a test flow length at a first time point, and testing to obtain a test applicable period, a test curing degree, a test tensile strength and a test curing uniformity; And calculating according to the reference flowing length of the first time point, the test flowing length of the first time point, the reference applicable period and the test applicable period to obtain a weighted comprehensive operability attenuation coefficient, and calculating according to the reference curing degree, the test curing degree, the reference tensile strength, the test tensile strength, the reference curing uniformity and the test curing uniformity to obtain a weighted comprehensive curing performance standard-reaching coefficient.
2. The method for detecting the comprehensive performance of the room-temperature-curable resin under the high-altitude environment according to claim 1, wherein the calculating the weighted comprehensive operational attenuation coefficient according to the reference flow length at the first time point, the test flow length at the first time point, the reference pot life and the test pot life comprises: calculating according to the reference flowing length of the first time point and the test flowing length of the first time point to obtain the fluidity attenuation rate, and calculating according to the reference applicable period and the test applicable period to obtain the applicable period attenuation rate; Calculating according to the fluidity attenuation rate and the pot life attenuation rate to obtain a weighted comprehensive operability attenuation coefficient; The weighted comprehensive curing performance standard coefficient obtained by calculation according to the reference curing degree, the test curing degree, the reference tensile strength, the test tensile strength, the reference curing uniformity and the test curing uniformity comprises the following components: Calculating according to the reference curing degree and the test curing degree to obtain a curing degree standard rate, calculating according to the reference tensile strength and the test tensile strength to obtain a tensile strength standard rate, and calculating according to the reference curing uniformity and the test curing uniformity to obtain a curing uniformity standard rate; and calculating according to the cure degree standard reaching rate, the tensile strength standard reaching rate and the cure uniformity standard reaching rate to obtain the weighted comprehensive cure performance standard reaching coefficient.
3. The method for detecting the comprehensive performance of a room-temperature-curable resin in a high-altitude environment according to claim 2, wherein the fluidity decay rate is The calculation formula of (2) is as follows: Wherein, the The reference flow length of the first time point t, The test flow length is the first time point t; Decay rate of pot life The calculation formula of (2) is as follows: Wherein, the As a reference to the pot life of the device, Is the test pot life; Cure degree standard rate The calculation formula of (2) is as follows: Wherein, the As a reference to the degree of cure, The curing degree is tested; tensile strength standard The calculation formula of (2) is as follows: Wherein, the As a reference to the tensile strength of the steel, To test tensile strength; Curing uniformity up to standard rate The calculation formula of (2) is as follows: Wherein, the As a reference to the uniformity of cure, To test cure uniformity.
4. The method for detecting the comprehensive performance of the room-temperature-curable resin under the high-altitude environment according to claim 3, wherein the calculation formula of the weighted comprehensive operability attenuation coefficient is: Wherein, the For weighting the composite operational attenuation coefficients; the calculation formula of the weighted comprehensive curing performance standard-reaching coefficient is as follows: Wherein, the The standard reaching coefficient of the weighted comprehensive curing performance is obtained.
5. The method for detecting the comprehensive performance of a room-temperature-curable resin in a high-altitude environment according to claim 4, wherein the attenuation coefficient is integrated according to a weight And a weighted integrated cure performance compliance coefficient Dividing the comprehensive performance of the room-temperature curing resin in the test altitude environment into three stages; Wherein if it And is also provided with The method is first-order and shows that the operability attenuation is small and the solidification performance is stable in the test altitude environment; If it is And is also provided with The method is second-level and indicates that the operability attenuation is controllable and the curing performance basically meets the standard under the test altitude environment; If it is Or (b) Three levels and indicates poor operability or inadequate curing performance in the test altitude environment.
6. The method for detecting the comprehensive performance of the room-temperature-curable resin under the high-altitude environment according to claim 1, comprising the steps of: Respectively testing under standard environment to obtain flow lengths of 10min, 20min and 30min 、、 And testing to obtain viscosity of 10min, 20min and 30min 、、 ; According to 、、、、、 Fitting an association equation: wherein a and b are fitting coefficients, and in addition, the degree of fitting 。
7. The method for detecting the comprehensive performance of the room-temperature-curable resin under the high-altitude environment according to claim 6, wherein the method for testing the flow length and the viscosity is as follows: Pouring the room-temperature curing resin into a polytetrafluoroethylene standard flowing groove with the inclination of 30 degrees, the groove depth of 5mm, the length of 200mm and the width of 20mm, recording the flowing length corresponding to a time point, and synchronously measuring the viscosity corresponding to the time point by using a rotational viscometer.
8. The method for detecting the comprehensive performance of the room-temperature-curable resin under the high-altitude environment according to claim 1, wherein the method for testing the pot life is as follows: embedding miniature platinum electrodes with the interval of 5mm into room-temperature cured resin, monitoring the conductivity in real time, and picking up the miniature platinum electrodes with the diameter of 3mm synchronously to observe a wiredrawing state, wherein the lifting height is 50mm; pot life was recorded when the conductivity was reduced to 50% of the initial value and the glass rod failed to draw.
9. The method for detecting the comprehensive performance of the room-temperature-curable resin under the high-altitude environment according to claim 1, wherein the method for testing the curing degree is as follows: The enthalpy change of the room temperature cured resin after complete curing is obtained by adopting a differential scanning calorimeter test under the nitrogen atmosphere at the temperature rising rate of 10 ℃ per minute; The ratio of the enthalpy change after the room temperature cured resin is completely cured to the theoretical complete curing enthalpy change is recorded as the curing degree; the testing method of the curing uniformity comprises the following steps: Dividing a cured room temperature curing resin sample into a surface layer with the thickness of 1mm and an inner layer with the residual thickness; Testing the solidification degree of the surface layer and the inner layer respectively; The difference in the curing degree between the surface layer and the inner layer was recorded as the curing uniformity.
10. The method for detecting the comprehensive performance of the room-temperature-curable resin under the high-altitude environment according to any one of claims 1 to 9, wherein the selecting three environmental factors of the air pressure, the temperature and the ultraviolet intensity for orthogonal test design to design a plurality of test altitude environments comprises: the air pressure is selected to be two levels of 900hPa and 1000hPa, the temperature is selected to be three levels of 20 ℃, 25 ℃ and 30 ℃, and the ultraviolet radiation intensity is selected to be three levels of 100-200W/m 2 、200~400W/m 2 、400~600W/m 2 ; the orthogonal test design obtains 18 test altitude environments.

Description

Comprehensive performance detection method of room-temperature cured resin in high-altitude environment Technical Field The invention belongs to the technical field of performance detection of room-temperature cured resin, and particularly relates to a comprehensive performance detection method of room-temperature cured resin in a high-altitude environment. Background At present, the conventional performance detection method of the room-temperature curing resin based on the standard environment is a mainstream method for detecting the performance of the room-temperature curing resin such as epoxy resin, polyurethane resin and the like, and the core of the method is developed around a single performance test under the standard environment, and the details are as follows: 1. The detection environment strictly complies with the standard condition of a conventional laboratory, the air pressure is generally 1013 hPa +/-5 hPa (close to the normal pressure of a low-altitude area), the temperature is 23+/-2 ℃, the room temperature is fixed and no day and night fluctuation exists, the ultraviolet intensity is less than 50W/m < 2 >, the whole process is free from ultraviolet irradiation and only depends on the ordinary illumination of the laboratory, namely, the performance detection method does not simulate the low-air pressure, the temperature fluctuation or the strong ultraviolet environment which are special in the high-altitude area; 2. Only the basic performance of the room temperature curing resin in the standard environment is detected, and the detection method and indexes are limited to: The curing test, namely, a differential scanning calorimeter is adopted to test, but only the integral curing degree of the room temperature curing resin after being completely cured in a standard environment is detected, and the curing difference between the surface layer and the inner layer of the sample is not distinguished, so that the curing uniformity cannot be reflected; Preparing a standard sample according to GB/T1040.1-2018, wherein the standard sample is directly tested after being cured in a standard environment, and the curing process in a high-altitude environment is not simulated, namely the test result only reflects the mechanical property in the standard environment; 3. The results output single performance data in a standard environment without performance decay assessment in a high altitude environment. Disclosure of Invention The invention provides a method for detecting the comprehensive performance of room-temperature cured resin in a high-altitude environment, which aims to overcome the defects of the prior art and can detect the comprehensive performance of the room-temperature cured resin in the altitude environment. The aim of the invention is achieved by the following technical scheme: a comprehensive performance detection method of room-temperature cured resin in a high-altitude environment comprises the following steps: The method comprises the steps of selecting three environmental factors of air pressure, temperature and ultraviolet radiation intensity for orthogonal test design so as to design and obtain a plurality of test altitude environments; Testing in a standard environment to obtain a reference flowing length at a first time point, and testing to obtain a reference applicable period, a reference curing degree, a reference tensile strength and a reference curing uniformity; Testing under each test altitude environment to obtain a test flow length at a first time point, and testing to obtain a test applicable period, a test curing degree, a test tensile strength and a test curing uniformity; And calculating according to the reference flowing length of the first time point, the test flowing length of the first time point, the reference applicable period and the test applicable period to obtain a weighted comprehensive operability attenuation coefficient, and calculating according to the reference curing degree, the test curing degree, the reference tensile strength, the test tensile strength, the reference curing uniformity and the test curing uniformity to obtain a weighted comprehensive curing performance standard-reaching coefficient. Further, calculating the weighted comprehensive operational attenuation coefficient according to the reference flowing length of the first time point, the test flowing length of the first time point, the reference applicable period and the test applicable period comprises the following steps: calculating according to the reference flowing length of the first time point and the test flowing length of the first time point to obtain the fluidity attenuation rate, and calculating according to the reference applicable period and the test applicable period to obtain the applicable period attenuation rate; Calculating according to the fluidity attenuation rate and the pot life attenuation rate to obtain a weighted comprehensive operability attenuation coefficient