Flame-retardant testing method and system for heat-insulating wood and storage medium

Abstract

The invention discloses a flame-retardant testing method and system for heat-insulating wood and a storage medium, and belongs to the technical field of heat-insulating wood detection. The method comprises the following steps: carrying out comprehensive analysis according to test environment data to obtain a test environment evaluation value, and carrying out matching according to the test environment evaluation value of each test sample to obtain a flame retardant performance evaluation threshold value of each test sample; carrying out comprehensive analysis according to the test sample size data and the test sample state data to obtain a qualification index of each test sample, carrying out comprehensive analysis according to the test environment evaluation value and the qualification index of the test sample to obtain a test accuracy evaluation value, and screening according to each test accuracy evaluation value to obtain each qualified sample; performing comprehensive analysis according to the flame-retardant test data to obtain a flame-retardant performance evaluation value of each qualified sample, comparing the flame-retardant performance evaluation value of each qualified sample with a corresponding flame-retardant performance evaluation threshold value, and performing evaluation feedback on the heat-insulating wood according to a comparison result.

Description

Technical Field

[0001] The invention relates to the technical field of thermal insulation wood detection, and in particular to a flame retardancy testing method, system and storage medium for thermal insulation wood. Background Art

[0002] The basic principle of flame retardant testing is to test the flame retardant properties of thermal insulation wood by simulating an actual fire environment to evaluate its performance in a fire. In order to ensure the accuracy and comparability of flame retardant test results, there are currently multiple flame retardant test standards that specify test methods, test conditions, sample preparation and other requirements to ensure the accuracy and reliability of test results.

[0003] The existing flame retardant test methods for thermal insulation wood are mainly achieved through a variety of experimental means, including vertical burning test, horizontal burning test, oxygen index test, smoke density test, heat release rate test and flame spread rate test, etc. These test methods together constitute an experimental system for comprehensively evaluating the flame retardant properties of thermal insulation wood.

[0004] For example, the invention patent with announcement number: CN107991167B announces a method for testing the flame retardant properties of a titanium fire retardant coating, comprising: using a friction pair consisting of a coated rotor sample with a top angle at one end and a coated stator sample with a circular hole in the center as an ignition source, taking the friction ignition time as a control parameter, fixing other parameters such as the premixed airflow temperature, pressure and oxygen concentration at a certain value, controlling the airflow reversing valve through a computer software program, increasing or decreasing the friction ignition time, until a plurality of ignition and non-ignition test points are obtained, filling these test points into a prefabricated table, when the difference in friction ignition time corresponding to the ignition and non-ignition of the stator sample is less than or equal to 0.1s, the friction ignition time corresponding to the non-ignition of the stator sample is defined as the critical friction ignition time, and repeating the test 10 times. If the stator samples are all non-ignitable, then the critical friction ignition time quantitatively describes the boundary between the ignition and non-ignition of the sample, that is, quantitatively characterizes the flame retardant properties of the tested titanium fire retardant coating.

[0005] For example, the invention patent with announcement number: CN106153476B discloses a method for testing the rolling shear modulus and strength of wood, comprising: using standard materials along the longitudinal grain of the wood as the two outer layers of the specimen, and standard materials along the transverse grain of the wood as the core layer, and bonding them with an adhesive to form a sandwich specimen; cutting two stacked right-angle wedges from the two outer layers of the sandwich specimen, and placing steel plates on the end faces of the right-angle wedges respectively; applying pressure to the surface of the steel plate at a uniform speed until the specimen is destroyed, the direction of the pressure being perpendicular to the direction of the steel plate, recording the loading time, load, relative displacement of the outer layer, and displacement of the loading head, and obtaining the rolling shear modulus and strength of the wood by calculation.

[0006] However, in the process of implementing the technical solution of the invention in the embodiments of the present application, the present application found that the above technology has at least the following technical problems:

[0007] In the prior art, when thermal insulation wood is subjected to flame retardancy testing, differences in sample quality lead to differences in test results, resulting in a problem of low accuracy of the test results. Summary of the invention

[0008] The present invention provides a flame retardancy testing method, system and storage medium for thermal insulation wood, thereby solving the problem in the prior art that when thermal insulation wood is subjected to flame retardancy testing, the test results are different due to different sample qualities, resulting in low accuracy of the test results, and achieving the closeness between the test environment and the actual environment.

[0009] The invention provides a flame retardant testing method for heat-insulating wood, comprising the following steps: obtaining heat-insulating wood samples, marking them as test samples and performing flame retardant tests, collecting test environment data, test sample size data, test sample state data and flame retardant test data; obtaining a test environment evaluation value of each test sample by comprehensive analysis according to the test environment data, and obtaining a flame retardant performance evaluation threshold of each test sample by matching the test environment evaluation value of each test sample; obtaining a qualified index of each test sample by comprehensive analysis according to the test sample size data and the test sample state data, obtaining a test accuracy evaluation value of each test sample by comprehensive analysis according to the test environment evaluation value of each test sample and the qualified index of each test sample, and screening each qualified sample according to the test accuracy evaluation value of each test sample; obtaining a flame retardant performance evaluation value of each qualified sample by comprehensive analysis according to the flame retardant test data, comparing the flame retardant performance evaluation value of each qualified sample with the corresponding flame retardant performance evaluation threshold, and providing evaluation feedback on the heat-insulating wood according to the comparison result.

[0010] Furthermore, the step of obtaining the test environment evaluation value of each test sample based on a comprehensive analysis of the test environment data includes: the test environment data includes oxygen content, temperature, humidity and air pressure values; obtaining the critical oxygen content, critical temperature, critical humidity and critical air pressure values ​​from the flame retardant test database; and obtaining the test environment evaluation value of each test sample through a comprehensive analysis.

[0011] Furthermore, the step of obtaining the qualified index of each test sample by comprehensive analysis based on the test sample size data and the test sample status data includes: the test sample size data includes wood volume and wood thickness; the test sample status data includes moisture content and wood weight; obtaining the reference wood volume, allowable deviation wood volume, reference wood thickness, allowable deviation wood thickness, reference moisture content, allowable deviation moisture content, reference wood weight and allowable deviation wood weight from the flame retardant test database; and obtaining the qualified index of each test sample by comprehensive analysis.

[0012] Furthermore, the step of obtaining the test accuracy evaluation value of each test sample by comprehensive analysis based on the test environment evaluation value of each test sample and the qualification index of each test sample includes: obtaining the standard test environment evaluation value, allowable deviation test environment evaluation value and critical qualification index of each test sample from the flame retardant test database; and obtaining the test accuracy evaluation value of each test sample by comprehensive analysis.

[0013] Furthermore, according to the test accuracy evaluation value of each test sample, the step of screening out each qualified sample includes: obtaining a test accuracy evaluation threshold from a flame retardant test database; comparing the test accuracy evaluation value of each test sample with the test accuracy evaluation threshold; if the test accuracy evaluation value of a test sample is less than the test accuracy evaluation threshold, then the test sample is marked as an unqualified sample; if the test accuracy evaluation value of a test sample is greater than or equal to the test accuracy evaluation threshold, then the test sample is marked as a qualified sample, and each qualified sample is statistically obtained.

[0014] Furthermore, the step of obtaining the flame retardant performance evaluation value of each qualified sample through comprehensive analysis of the flame retardant test data includes: the flame retardant test data includes a combustion growth rate, a smoke generation rate and a limiting oxygen index; obtaining the critical combustion growth rate, the critical smoke generation rate and the critical limiting oxygen index from the flame retardant test database; and obtaining the flame retardant performance evaluation value of each qualified sample through comprehensive analysis.

[0015] Furthermore, the flame retardant performance evaluation value of each qualified sample is obtained as follows:

[0016]

[0017] Where, ξF j represents the flame retardant performance evaluation value of the jth qualified sample, α1 represents the flame retardant performance evaluation influencing factor corresponding to the combustion growth rate, α2 represents the flame retardant performance evaluation influencing factor corresponding to the smoke generation rate, α3 represents the flame retardant performance evaluation influencing factor corresponding to the limiting oxygen index, G 1j represents the combustion growth rate of the jth qualified sample, G0 represents the critical combustion growth rate, S 1j represents the smoke generation rate of the jth qualified sample, S0 represents the critical smoke generation rate, E 1j represents the limiting oxygen index of the jth qualified sample, E0 represents the critical limiting oxygen index, e is a natural constant, where j is the number of each qualified sample, j=1,2,3,...,M, M is the total number of qualified samples.

[0018] Furthermore, the flame retardant performance evaluation value of each qualified sample is compared with the corresponding flame retardant performance evaluation threshold, and the step of providing evaluation feedback on the thermal insulation wood according to the comparison result includes: comparing the flame retardant performance evaluation value of each qualified sample with the flame retardant performance evaluation threshold corresponding to each qualified sample; if the flame retardant performance evaluation value of a qualified sample is greater than or equal to the flame retardant performance evaluation threshold corresponding to the qualified sample, then marking the qualified sample as a sample with good flame retardant performance; if the flame retardant performance evaluation value of a qualified sample is less than the flame retardant performance evaluation threshold corresponding to the qualified sample, then marking the qualified sample as a sample with general flame retardant performance.

[0019] The embodiment of the present application provides a flame retardant testing system for thermal insulation wood, which includes a data acquisition module, an environmental assessment module, a sample screening module, a flame retardant assessment module and a flame retardant test database; wherein the data acquisition module is used to acquire thermal insulation wood samples, mark them as test samples and perform flame retardant tests, collect test environment data, test sample size data, test sample status data and flame retardant test data; the environmental assessment module is used to obtain a test environment assessment value of each test sample based on a comprehensive analysis of the test environment data, and obtain a flame retardant performance assessment threshold value of each test sample based on the test environment assessment value of each test sample. The sample screening module is used to obtain the qualified index of each test sample according to the comprehensive analysis of the test sample size data and the test sample status data, obtain the test accuracy evaluation value of each test sample according to the comprehensive analysis of the test environment evaluation value of each test sample and the qualified index of each test sample, and screen each qualified sample according to the test accuracy evaluation value of each test sample; the flame retardant evaluation module is used to obtain the flame retardant performance evaluation value of each qualified sample according to the comprehensive analysis of the flame retardant test data, compare the flame retardant performance evaluation value of each qualified sample with the corresponding flame retardant performance evaluation threshold, and evaluate and feedback the thermal insulation wood according to the comparison result.

[0020] An embodiment of the present application provides a flame retardant test storage medium for thermal insulation wood, which is used to store a program. When the program is executed by a processor, a flame retardant test method for thermal insulation wood is implemented.

[0021] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0022] 1. The present invention provides a flame retardant testing method, system and storage medium for thermal insulation wood, thereby comprehensively evaluating the test environment, qualification index, flame retardant performance and test accuracy of each test sample, thereby achieving accurate evaluation and feedback of the flame retardant performance of thermal insulation wood.

[0023] 2. The present invention matches the test environment evaluation value of each test sample, thereby taking into account the impact of different test environments on the flame retardant performance evaluation, thereby achieving a more accurate and reasonable flame retardant performance evaluation threshold for each test sample.

[0024] 3. The present invention screens the test samples according to the test accuracy evaluation value, thereby ensuring that only those samples with accurate test process and reliable results are included in the qualified category, thereby achieving strict control of the quality of thermal insulation wood samples and improving the accuracy and credibility of subsequent flame retardant performance evaluation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A flow chart of a flame retardant testing method for thermal insulation wood provided in an embodiment of the present application.

[0026] Figure 2 This is a graph showing changes in flame retardant performance evaluation values ​​for a flame retardant testing method based on thermal insulation wood provided in an embodiment of the present application.

[0027] Figure 3 A schematic structural diagram of a flame retardant testing system for thermal insulation wood provided in an embodiment of the present application. DETAILED DESCRIPTION

[0028] The embodiment of the present application provides a flame retardant testing method, system and storage medium for thermal insulation wood, which solves the problem of low accuracy of test results caused by different sample qualities during flame retardant testing of thermal insulation wood in the prior art. The test environment evaluation value of each test sample is obtained by comprehensive analysis based on the test environment data, and the flame retardant performance evaluation threshold of each test sample is obtained by matching the test environment evaluation value of each test sample; the qualified index of each test sample is obtained by comprehensive analysis based on the test sample size data and the test sample status data, the test accuracy evaluation value of each test sample is obtained by comprehensive analysis based on the test environment evaluation value of each test sample and the qualified index of each test sample, and each qualified sample is screened based on the test accuracy evaluation value of each test sample; the flame retardant performance evaluation value of each qualified sample is obtained by comprehensive analysis based on the flame retardant test data, the flame retardant performance evaluation value of each qualified sample is compared with the corresponding flame retardant performance evaluation threshold, and the thermal insulation wood is evaluated and fed back according to the comparison result, thereby achieving the proximity between the test environment and the actual environment.

[0029] The technical solution in the embodiment of the present application is to solve the problem that when the above-mentioned thermal insulation wood is subjected to flame retardancy test, the test results are different due to the different quality of the samples, resulting in low accuracy of the test results. The overall idea is as follows:

[0030] By obtaining thermal insulation wood samples, marking them as test samples and conducting flame retardant tests, collecting test environment data, test sample size data, test sample status data and flame retardant test data; obtaining the test environment evaluation value of each test sample through comprehensive analysis based on the test environment data, and obtaining the flame retardant performance evaluation threshold of each test sample through matching the test environment evaluation value of each test sample; obtaining the qualified index of each test sample through comprehensive analysis based on the test sample size data and the test sample status data, obtaining the test accuracy evaluation value of each test sample through comprehensive analysis based on the test environment evaluation value of each test sample and the qualified index of each test sample, and screening each qualified sample based on the test accuracy evaluation value of each test sample; obtaining the flame retardant performance evaluation value of each qualified sample through comprehensive analysis based on the flame retardant test data, comparing the flame retardant performance evaluation value of each qualified sample with the corresponding flame retardant performance evaluation threshold, and evaluating and feeding back the thermal insulation wood according to the comparison results, the purpose of conducting systematic and scientific flame retardant performance testing and evaluation of thermal insulation wood samples is achieved, and strong technical support is provided for the research and development, production and application of thermal insulation wood.

[0031] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] like Figure 1 As shown, it is a flow chart of a flame retardant testing method for thermal insulation wood provided by an embodiment of the present application, the method comprising the following steps: obtaining thermal insulation wood samples, marking them as test samples and performing flame retardant tests, collecting test environment data, test sample size data, test sample status data and flame retardant test data; obtaining a test environment evaluation value of each test sample according to a comprehensive analysis of the test environment data, and obtaining a flame retardant performance evaluation threshold of each test sample according to the test environment evaluation value of each test sample; obtaining a qualified index of each test sample according to a comprehensive analysis of the test sample size data and the test sample status data, obtaining a test accuracy evaluation value of each test sample according to a comprehensive analysis of the test environment evaluation value of each test sample and the qualified index of each test sample, and screening each qualified sample according to the test accuracy evaluation value of each test sample; obtaining a flame retardant performance evaluation value of each qualified sample according to a comprehensive analysis of the flame retardant test data, comparing the flame retardant performance evaluation value of each qualified sample with the corresponding flame retardant performance evaluation threshold, and providing evaluation feedback on the thermal insulation wood according to the comparison result.

[0033] In this embodiment, when the flame retardant performance evaluation threshold of each test sample is obtained by matching the test environment evaluation value of each test sample, since the test environment evaluation value and the flame retardant performance evaluation threshold corresponding to each test environment evaluation value interval preset in the flame retardant test database form a mapping set, the test environment evaluation value of each test sample is input into the mapping set to obtain the flame retardant performance evaluation threshold of each test sample corresponding to the test environment evaluation value of each test sample. The present invention can more accurately evaluate the flame retardant performance of wood by comprehensively considering multiple factors such as the test environment, test samples, and flame retardant tests, reduce errors caused by improper test conditions or data deviations, and help improve test efficiency and consistency.

[0034] In addition, since the flame retardant test database stores relevant data on flame retardant test methods based on thermal insulation wood, including: reference temperature, allowable deviation temperature, reference humidity, allowable deviation humidity, critical air pressure value, test environment assessment influencing factor corresponding to temperature, flame retardant performance assessment adjustment value and flame retardant performance assessment threshold corresponding to each deviation test accuracy assessment value interval, the data in the flame retardant test database can be directly queried in the test database established by testing institutions such as the Fire Products Quality Supervision and Inspection Center and the Building Materials Quality Supervision and Inspection Center, and can also be obtained through relevant websites, forums or relevant literature.

[0035] Furthermore, the step of obtaining the test environment evaluation value of each test sample based on a comprehensive analysis of the test environment data includes: the test environment data includes oxygen content, temperature, humidity and air pressure values; obtaining the critical oxygen content, critical temperature, critical humidity and critical air pressure values ​​from the flame retardant test database; and obtaining the test environment evaluation value of each test sample through a comprehensive analysis.

[0036] The test environment evaluation value of each test sample is obtained in the following manner:

[0037]

[0038] In the formula, ξE 1i represents the test environment assessment value of the i-th test sample, β5 represents the test environment assessment impact factor corresponding to the oxygen content, β6 represents the test environment assessment impact factor corresponding to the temperature, β7 represents the test environment assessment impact factor corresponding to the humidity, β8 represents the test environment assessment impact factor corresponding to the air pressure value, O 1i represents the oxygen content of the i-th test sample, O0 represents the critical oxygen content, T 1i represents the temperature of the i-th test sample, T0 represents the critical temperature, H 1i represents the humidity of the i-th test sample, H0 represents the critical humidity, P 1irepresents the air pressure value of the i-th test sample, P0 represents the critical air pressure value, wherein i is the number of each test sample, i=1,2,3,...,N, and N is the total number of test samples.

[0039] β5, β6, β7 and β8 are the test environment assessment influencing factors corresponding to the preset oxygen content, temperature, humidity and air pressure values ​​in the flame retardant test database. These influencing factors are numerical indicators that measure the impact of the above environmental factors on the test environment assessment values. Specifically, the system constructs a mapping relationship table for each of the oxygen content, temperature, humidity and air pressure values. The table records each possible environmental factor value and its corresponding test environment assessment influencing factor. These mapping relationships can be one-to-one or many-to-one. In actual applications, when a test environment needs to be evaluated, the measured oxygen content, temperature, humidity and air pressure values ​​can be entered into their respective corresponding mapping relationship tables, and the test environment assessment influencing factors corresponding to these values ​​can be quickly found, where the value range of the influencing factor is between 0 and 1.

[0040] In this embodiment, the temperature, humidity and air pressure values ​​can be measured by placing instruments such as temperature sensors, humidity sensors and air pressure sensors at the center of the test area, respectively, and the oxygen content can be directly measured using tools such as paramagnetic oxygen analyzers. At the same time, the four interact with each other. As the temperature rises, the evaporation rate of water accelerates, resulting in a decrease in humidity; at the same time, due to the intensified thermal motion of gas molecules, the volume of the gas expands, thereby increasing the air pressure value. The test environment evaluation value obtained by comprehensive analysis can comprehensively evaluate the overall condition of the test environment, including its stability, suitability and possible impact on the test results. By analyzing the differences in the flame retardant properties of insulating wood under different environmental conditions, the test conditions can be optimized and the accuracy and reliability of the test can be improved.

[0041] Furthermore, the step of obtaining the qualified index of each test sample by comprehensive analysis based on the test sample size data and the test sample status data includes: the test sample size data includes wood volume and wood thickness; the test sample status data includes moisture content and wood weight; obtaining the reference wood volume, allowable deviation wood volume, reference wood thickness, allowable deviation wood thickness, reference moisture content, allowable deviation moisture content, reference wood weight and allowable deviation wood weight from the flame retardant test database; and obtaining the qualified index of each test sample by comprehensive analysis.

[0042] The method for obtaining the qualified index of each test sample is as follows:

[0043]

[0044] Where ξP 1irepresents the qualified index of the i-th test sample, β1 represents the qualified index influencing factor of the test sample corresponding to the wood volume, β2 represents the qualified index influencing factor of the test sample corresponding to the wood thickness, β3 represents the qualified index influencing factor of the test sample corresponding to the moisture content, β4 represents the qualified index influencing factor of the test sample corresponding to the wood weight, R 1i represents the wood volume of the i-th test sample, R0 represents the reference wood volume, R2 represents the allowable deviation wood volume, L 1i represents the wood thickness of the i-th test sample, L0 represents the reference wood thickness, L2 represents the allowable deviation wood thickness, W 1i represents the moisture content of the i-th test sample, W0 represents the reference moisture content, W2 represents the allowable deviation moisture content, A 1i represents the wood weight of the i-th test sample, A0 represents the reference wood weight, and A2 represents the allowable deviation wood weight.

[0045] β1, β2, β3 and β4 are the test sample qualified index influencing factors corresponding to the wood volume, wood thickness, moisture content and wood weight preset in the flame retardant test database. These influencing factors are numerical indicators that measure the influence of the above sample factors on the test sample qualified index. Specifically, the system constructs a mapping relationship table for wood volume, wood thickness, moisture content and wood weight respectively. The table records each possible sample factor value and its corresponding test sample qualified index influencing factor. These mapping relationships can be one-to-one or many-to-one. In actual applications, when it is necessary to evaluate the qualified index of a test sample, the measured wood volume, wood thickness, moisture content and wood weight can be input into their respective corresponding mapping relationship tables, and the test sample qualified index influencing factors corresponding to these values ​​can be quickly found, where the value range of the influencing factor is between 0 and 1.

[0046] In this embodiment, the volume of the wood can be obtained by directly measuring the length, width and height of the wood using a three-dimensional measuring tool (such as a laser rangefinder), and then calculating the product of the length, width and height of the wood; the thickness of the wood can be directly measured using measuring tools such as a vernier caliper and a micrometer; the moisture content can be measured using a wood moisture content meter; the weight of the wood can be directly measured using weighing tools such as an electronic scale and a platform scale. When the density of the wood is constant, the larger the volume, the greater the weight; the greater the moisture content, the easier it is to deform and crack the wood, and the lower the moisture content, the more brittle and easy to break the wood; generally speaking, the thicker the wood, the greater its strength in bending and compression resistance. The qualified index of the test sample obtained through comprehensive analysis can reflect whether the comprehensive performance of the wood under specific conditions meets the requirements, more accurately evaluate the performance and quality of the wood, and provide strong technical support for the procurement, processing and use of wood.

[0047] Furthermore, the step of obtaining the test accuracy evaluation value of each test sample by comprehensive analysis based on the test environment evaluation value of each test sample and the qualification index of each test sample includes: obtaining the standard test environment evaluation value, allowable deviation test environment evaluation value and critical qualification index of each test sample from the flame retardant test database; and obtaining the test accuracy evaluation value of each test sample by comprehensive analysis.

[0048] The test accuracy evaluation value of each test sample is obtained as follows:

[0049]

[0050] Where ξA i represents the test accuracy evaluation value of the i-th test sample, α4 represents the test accuracy evaluation impact factor corresponding to the test environment evaluation value, α5 represents the test accuracy evaluation impact factor corresponding to the test sample qualification index, ξE 1i represents the test environment evaluation value of the i-th test sample, ξE0 represents the standard test environment evaluation value, ξE2 represents the allowable deviation test environment evaluation value, ξP 1i represents the test sample qualification index of the i-th test sample, and ξP0 represents the critical test sample qualification index.

[0051] α4 and α5 are the test accuracy assessment influencing factors corresponding to the test environment assessment value and the test sample qualification index preset in the flame retardant test database, respectively. These influencing factors are numerical indicators that measure the influence of the above-mentioned influencing factors on the test accuracy assessment value. Specifically, the system constructs a mapping relationship table for the test environment assessment value and the test sample qualification index respectively. The table records each possible influencing factor value and its corresponding test accuracy assessment influencing factor. These mapping relationships can be one-to-one or many-to-one. In actual applications, when it is necessary to evaluate the accuracy of a certain test, the measured test environment assessment value and the test sample qualification index can be entered into their respective corresponding mapping relationship tables, and the test accuracy assessment influencing factors corresponding to these values ​​can be quickly found, where the value range of the influencing factor is between 0 and 1.

[0052] In this embodiment, the test environment evaluation value and the test sample qualification index affect each other, and the test environment evaluation value directly affects the performance of the wood during the test, that is, the greater the difference between the absolute value of the test environment evaluation value and the standard test environment evaluation value, the smaller the test sample qualification index may be. The test accuracy evaluation value obtained by comprehensive analysis can more accurately evaluate key indicators such as the flame retardant performance of the wood. This helps to reduce errors and deviations caused by unstable or unsuitable test environments.

[0053] Furthermore, according to the test accuracy evaluation value of each test sample, the step of screening out each qualified sample includes: obtaining a test accuracy evaluation threshold from a flame retardant test database; comparing the test accuracy evaluation value of each test sample with the test accuracy evaluation threshold; if the test accuracy evaluation value of a test sample is less than the test accuracy evaluation threshold, then the test sample is marked as an unqualified sample; if the test accuracy evaluation value of a test sample is greater than or equal to the test accuracy evaluation threshold, then the test sample is marked as a qualified sample, and each qualified sample is statistically obtained.

[0054] In this embodiment, the test accuracy evaluation threshold is a preset standard value or limit used to determine whether the test accuracy of the test sample meets the qualification requirements. By setting a unified evaluation threshold, the standardization and consistency of the screening process can be ensured, and deviations caused by human factors can be avoided; using the evaluation threshold for rapid comparison can quickly screen out qualified and unqualified samples, improve screening efficiency, and ensure product quality and safety.

[0055] Furthermore, the step of obtaining the flame retardant performance evaluation value of each qualified sample through comprehensive analysis of the flame retardant test data includes: the flame retardant test data includes a combustion growth rate, a smoke generation rate and a limiting oxygen index; obtaining the critical combustion growth rate, the critical smoke generation rate and the critical limiting oxygen index from the flame retardant test database; and obtaining the flame retardant performance evaluation value of each qualified sample through comprehensive analysis.

[0056] In this embodiment, the combustion growth rate is an indicator to measure the speed of fire spread of thermal insulation wood during combustion, which can be directly measured using professional instruments such as a combustion tester; the smoke generation rate indicates the speed at which thermal insulation wood produces smoke during combustion, which can be directly measured using tools such as a smoke flow rate detector; the limiting oxygen index refers to the minimum oxygen concentration required for combustion in a nitrogen and oxygen mixture, which measures the combustion performance of thermal insulation wood and can be directly measured using a limiting oxygen index tester. Generally, a greater combustion growth rate will lead to a faster fire spread rate, thereby increasing the smoke generation rate; the higher the limiting oxygen index, the lower the flammability of the thermal insulation wood, and the combustion growth rate is usually smaller; the larger the limiting oxygen index of the thermal insulation wood, the more difficult it is to burn, and its smoke generation rate is reduced because the combustion process is slower and more complete. The flame retardant performance evaluation value obtained by comprehensive analysis reflects the overall flame retardant performance level of the thermal insulation wood. By comparing the flame retardant performance evaluation values ​​of different thermal insulation woods, their advantages and disadvantages and applicability can be evaluated. Combining the flame retardant performance evaluation value of the thermal insulation wood with the actual application scenario, the safety of the product can be evaluated.

[0057] Furthermore, the flame retardant performance evaluation value of each qualified sample is obtained as follows:

[0058]

[0059] Where, ξF j represents the flame retardant performance evaluation value of the jth qualified sample, α1 represents the flame retardant performance evaluation influencing factor corresponding to the combustion growth rate, α2 represents the flame retardant performance evaluation influencing factor corresponding to the smoke generation rate, α3 represents the flame retardant performance evaluation influencing factor corresponding to the limiting oxygen index, G 1j represents the combustion growth rate of the jth qualified sample, G0 represents the critical combustion growth rate, S 1j represents the smoke generation rate of the jth qualified sample, S0 represents the critical smoke generation rate, E 1j represents the limiting oxygen index of the jth qualified sample, E0 represents the critical limiting oxygen index, e is a natural constant, where j is the number of each qualified sample, j=1,2,3,...,M, M is the total number of qualified samples.

[0060] In this embodiment, α1, α2 and α3 are the flame retardant performance evaluation influencing factors corresponding to the combustion growth rate, smoke generation rate and limiting oxygen index preset in the flame retardant test database, respectively. These influencing factors are numerical indicators that measure the influence of the above performance factors on the flame retardant performance evaluation value. Specifically, the system constructs a mapping relationship table for each of the combustion growth rate, smoke generation rate and limiting oxygen index, which records each possible performance factor value and its corresponding flame retardant performance evaluation influencing factor. These mapping relationships can be one-to-one or many-to-one. In practical applications, when it is necessary to evaluate the flame retardant performance of a certain thermal insulation wood, the measured combustion growth rate, smoke generation rate and limiting oxygen index can be input into the corresponding mapping relationship table respectively, and the flame retardant performance evaluation influencing factors corresponding to these values ​​can be quickly found, where the value range of the influencing factor is between 0 and 1.

[0061] The flame retardant performance evaluation impact factor corresponding to the combustion growth rate is set to 0.3, the flame retardant performance evaluation impact factor corresponding to the smoke generation rate is set to 0.3, the flame retardant performance evaluation impact factor corresponding to the limiting oxygen index is set to 0.4, the combustion growth rate is set to 1.3, the critical combustion growth rate is set to 1.5, the smoke generation rate is set to 1.3g / s, the critical smoke generation rate is set to 1.2g / s, and the critical limiting oxygen index is set to 1.2. When the limiting oxygen index continues to increase, the flame retardant performance evaluation value is calculated. The flame retardant performance evaluation value data table based on the flame retardant test method of thermal insulation wood is shown in Table 1.

[0062] Table 1 Flame retardant performance evaluation value data table based on the flame retardant test system of thermal insulation wood

[0063] serial number <![CDATA[E 1j %]]> <![CDATA[ξF j ]]> 1 1.1 0.726 2 1.15 0.734 3 1.2 0.743 4 1.25 0.751 5 1.3 0.759

[0064] like Figure 2As shown in Table 1 and Figure 2 It can be seen that when the flame retardant performance evaluation influencing factor corresponding to the combustion growth rate, the flame retardant performance evaluation influencing factor corresponding to the smoke generation rate, the flame retardant performance evaluation influencing factor corresponding to the limiting oxygen index, the combustion growth rate, the critical combustion growth rate, the smoke generation rate, the critical smoke generation rate and the critical limiting oxygen index remain unchanged, and the limiting oxygen index continues to increase, the flame retardant performance evaluation value also continues to increase.

[0065] Furthermore, the flame retardant performance evaluation value of each qualified sample is compared with the corresponding flame retardant performance evaluation threshold, and the step of providing evaluation feedback on the thermal insulation wood according to the comparison result includes: comparing the flame retardant performance evaluation value of each qualified sample with the flame retardant performance evaluation threshold corresponding to each qualified sample; if the flame retardant performance evaluation value of a qualified sample is greater than or equal to the flame retardant performance evaluation threshold corresponding to the qualified sample, then marking the qualified sample as a sample with good flame retardant performance; if the flame retardant performance evaluation value of a qualified sample is less than the flame retardant performance evaluation threshold corresponding to the qualified sample, then marking the qualified sample as a sample with general flame retardant performance.

[0066] In this embodiment, the marking result of each sample is recorded in the flame retardant test database for subsequent query and tracking, so as to facilitate further decision-making on each sample according to different levels of flame retardant performance. Grading evaluation of flame retardant performance helps enterprises to reasonably allocate resources according to actual needs, such as giving priority to samples with good flame retardant performance for subsequent research and development or production; by comparing the evaluation value and the evaluation threshold, enterprises can promptly discover samples with insufficient flame retardant performance and take measures to improve them, thereby improving the overall product quality.

[0067] like Figure 3, which is a schematic diagram of the structure of a flame retardant testing system for thermal insulation wood provided in an embodiment of the present application, and the flame retardant testing system for thermal insulation wood provided in an embodiment of the present application comprises: a data acquisition module, an environmental assessment module, a sample screening module, a flame retardant assessment module and a flame retardant test database; wherein the data acquisition module is used to acquire thermal insulation wood samples, mark them as test samples and perform flame retardant tests, collect test environment data, test sample size data, test sample status data and flame retardant test data; the environmental assessment module is used to obtain test environment assessment values ​​of each test sample according to comprehensive analysis of the test environment data, and match the test environment assessment values ​​of each test sample according to the test environment assessment values. The flame retardant performance evaluation threshold of each test sample is obtained; the sample screening module is used to obtain the qualified index of each test sample according to the test sample size data and the test sample status data, obtain the test accuracy evaluation value of each test sample according to the test environment evaluation value of each test sample and the qualified index of each test sample, and screen each qualified sample according to the test accuracy evaluation value of each test sample; the flame retardant evaluation module is used to obtain the flame retardant performance evaluation value of each qualified sample according to the flame retardant test data, compare the flame retardant performance evaluation value of each qualified sample with the corresponding flame retardant performance evaluation threshold, and evaluate and feedback the thermal insulation wood according to the comparison result.

[0068] Among them, the embodiment of the present application also provides a flame retardant test storage medium for thermal insulation wood, which is used to store a program, and when the program is executed by a processor, a flame retardant test method for thermal insulation wood is implemented.

[0069] In summary, the embodiment of the present application obtains thermal insulation wood samples, marks them as test samples and performs flame retardant tests, collects test environment data, test sample size data, test sample status data and flame retardant test data; obtains the test environment evaluation value of each test sample according to a comprehensive analysis of the test environment data, and obtains the flame retardant performance evaluation threshold of each test sample according to the matching of the test environment evaluation value of each test sample; obtains the qualified index of each test sample according to a comprehensive analysis of the test sample size data and the test sample status data, obtains the test accuracy evaluation value of each test sample according to a comprehensive analysis of the test environment evaluation value of each test sample and the qualified index of each test sample, and screens each qualified sample according to the test accuracy evaluation value of each test sample; obtains the flame retardant performance evaluation value of each qualified sample according to a comprehensive analysis of the flame retardant test data, compares the flame retardant performance evaluation value of each qualified sample with the corresponding flame retardant performance evaluation threshold, and evaluates and feedbacks the thermal insulation wood according to the comparison result, thereby achieving the closeness between the test environment and the actual environment.

[0070] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0071] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0072] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0073] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0074] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0075] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A flame retardant testing method for thermal insulation wood, characterized in that: The following steps are involved: Obtain thermal insulation wood samples, mark them as test samples and perform flame retardant tests, and collect test environment data, test sample size data, test sample status data and flame retardant test data; The test environment evaluation value of each test sample is obtained based on the comprehensive analysis of the test environment data, and the flame retardant performance evaluation threshold of each test sample is obtained based on the matching of the test environment evaluation value of each test sample; A qualified index of each test sample is obtained by comprehensive analysis based on the test sample size data and the test sample status data; a test accuracy evaluation value of each test sample is obtained by comprehensive analysis based on the test environment evaluation value of each test sample and the qualified index of each test sample; and qualified samples are screened based on the test accuracy evaluation value of each test sample; The flame retardant performance evaluation value of each qualified sample is obtained through comprehensive analysis of the flame retardant test data, and the flame retardant performance evaluation value of each qualified sample is compared with the corresponding flame retardant performance evaluation threshold value, and the insulation wood is evaluated and fed back according to the comparison results.

2. A flame retardant testing method for thermal insulation wood according to claim 1, characterized in that: The step of obtaining the test environment evaluation value of each test sample according to the comprehensive analysis of the test environment data comprises: The test environment data includes oxygen content, temperature, humidity and air pressure values; Get the critical oxygen content, critical temperature, critical humidity and critical air pressure values ​​from the flame retardant test database; The test environment evaluation value of each test sample is obtained through comprehensive analysis.

3. A flame retardant testing method for thermal insulation wood according to claim 1, characterized in that: The step of obtaining the qualified index of each test sample according to the comprehensive analysis of the test sample size data and the test sample status data comprises: The test sample size data, including wood volume and wood thickness; The test sample status data, including moisture content and wood weight; Obtain reference wood volume, allowable deviation wood volume, reference wood thickness, allowable deviation wood thickness, reference moisture content, allowable deviation moisture content, reference wood weight and allowable deviation wood weight from the flame retardant test database; The qualified index of each test sample is obtained through comprehensive analysis.

4. A flame retardant testing method for thermal insulation wood according to claim 1, characterized in that: The step of obtaining the test accuracy evaluation value of each test sample by comprehensive analysis based on the test environment evaluation value of each test sample and the qualification index of each test sample comprises: Obtain the standard test environment evaluation value, allowable deviation test environment evaluation value and critical test sample qualification index of each test sample from the flame retardant test database; The test accuracy evaluation value of each test sample is obtained through comprehensive analysis.

5. The flame retardancy testing method for thermal insulation wood according to claim 1, characterized in that: The step of screening and obtaining each qualified sample according to the test accuracy evaluation value of each test sample comprises: Obtaining a test accuracy assessment threshold from a flame retardant test database; The test accuracy evaluation value of each test sample is compared with the test accuracy evaluation threshold. If the test accuracy evaluation value of a test sample is less than the test accuracy evaluation threshold, the test sample is marked as an unqualified sample. If the test accuracy evaluation value of a test sample is greater than or equal to the test accuracy evaluation threshold, the test sample is marked as a qualified sample, and the qualified samples are statistically obtained.

6. A flame retardant testing method for thermal insulation wood according to claim 1, characterized in that: The step of obtaining the flame retardant performance evaluation value of each qualified sample according to the comprehensive analysis of the flame retardant test data comprises: The flame retardant test data includes combustion growth rate, smoke generation rate and limiting oxygen index; Obtain critical combustion growth rate, critical smoke generation rate and critical limiting oxygen index from the flame retardant test database; The flame retardant performance evaluation value of each qualified sample is obtained through comprehensive analysis.

7. A flame retardancy testing method for thermal insulation wood according to claim 6, characterized in that: The flame retardant performance evaluation value of each qualified sample is obtained as follows: Where, ξF j represents the flame retardant performance evaluation value of the jth qualified sample, α1 represents the flame retardant performance evaluation influencing factor corresponding to the combustion growth rate, α2 represents the flame retardant performance evaluation influencing factor corresponding to the smoke generation rate, α3 represents the flame retardant performance evaluation influencing factor corresponding to the limiting oxygen index, G 1j represents the combustion growth rate of the jth qualified sample, G0 represents the critical combustion growth rate, S 1j represents the smoke generation rate of the jth qualified sample, S0 represents the critical smoke generation rate, E 1j represents the limiting oxygen index of the jth qualified sample, E0 represents the critical limiting oxygen index, e is a natural constant, where j is the number of each qualified sample, j=1,2,3,...,M, M is the total number of qualified samples.

8. The flame retardancy testing method for thermal insulation wood according to claim 1, characterized in that: The step of comparing the flame retardant performance evaluation value of each qualified sample with the corresponding flame retardant performance evaluation threshold and providing evaluation feedback on the thermal insulation wood according to the comparison result comprises: The flame retardant performance evaluation value of each qualified sample is compared with the flame retardant performance evaluation threshold corresponding to each qualified sample. If the flame retardant performance evaluation value of a qualified sample is greater than or equal to the flame retardant performance evaluation threshold corresponding to the qualified sample, the qualified sample is marked as a sample with good flame retardant performance; if the flame retardant performance evaluation value of a qualified sample is less than the flame retardant performance evaluation threshold corresponding to the qualified sample, the qualified sample is marked as a sample with general flame retardant performance.

9. A flame retardancy testing system for thermal insulation wood, using a flame retardancy testing method for thermal insulation wood as claimed in any one of claims 1 to 8, characterized in that: It includes data acquisition module, environmental assessment module, sample screening module, flame retardant assessment module and flame retardant test database; Wherein, the data acquisition module is used to obtain the thermal insulation wood samples, mark them as test samples and perform flame retardant tests, collect test environment data, test sample size data, test sample status data and flame retardant test data; The environmental assessment module is used to obtain the test environment assessment value of each test sample according to the comprehensive analysis of the test environment data, and to obtain the flame retardant performance assessment threshold of each test sample according to the matching of the test environment assessment value of each test sample; The sample screening module is used to obtain the qualified index of each test sample according to the comprehensive analysis of the test sample size data and the test sample status data, obtain the test accuracy evaluation value of each test sample according to the comprehensive analysis of the test environment evaluation value of each test sample and the qualified index of each test sample, and screen each qualified sample according to the test accuracy evaluation value of each test sample; The flame retardant evaluation module is used to obtain the flame retardant performance evaluation value of each qualified sample based on the comprehensive analysis of the flame retardant test data, compare the flame retardant performance evaluation value of each qualified sample with the corresponding flame retardant performance evaluation threshold, and provide evaluation feedback for the thermal insulation wood based on the comparison result.

10. A flame retardant test storage medium for thermal insulation wood, used for storing a program, characterized in that: When the program is executed by a processor, a flame retardancy testing method for thermal insulation wood according to any one of claims 1 to 8 is implemented.

Images