CN112014421B - High temperature resistance detection method for nylon heat insulation strip - Google Patents
High temperature resistance detection method for nylon heat insulation strip Download PDFInfo
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- CN112014421B CN112014421B CN202011013631.9A CN202011013631A CN112014421B CN 112014421 B CN112014421 B CN 112014421B CN 202011013631 A CN202011013631 A CN 202011013631A CN 112014421 B CN112014421 B CN 112014421B
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- 238000009413 insulation Methods 0.000 title claims abstract description 58
- 239000004677 Nylon Substances 0.000 title claims abstract description 57
- 229920001778 nylon Polymers 0.000 title claims abstract description 57
- 238000001514 detection method Methods 0.000 title claims abstract description 23
- 238000010438 heat treatment Methods 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 30
- 230000008569 process Effects 0.000 claims description 13
- 239000000126 substance Substances 0.000 claims description 6
- 230000009467 reduction Effects 0.000 claims description 4
- 238000009825 accumulation Methods 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 230000015556 catabolic process Effects 0.000 claims description 3
- 238000000354 decomposition reaction Methods 0.000 claims description 3
- 238000006731 degradation reaction Methods 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 230000002378 acidificating effect Effects 0.000 claims description 2
- 238000007586 pull-out test Methods 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 6
- 230000006872 improvement Effects 0.000 description 9
- 230000008859 change Effects 0.000 description 8
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/18—Performing tests at high or low temperatures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
- G01N2203/0226—High temperature; Heating means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/025—Geometry of the test
- G01N2203/0252—Monoaxial, i.e. the forces being applied along a single axis of the specimen
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0298—Manufacturing or preparing specimens
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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Abstract
The invention discloses a high temperature resistant detection method of a nylon heat insulation strip, which comprises the steps of preparing a sample, preparing four groups of ovens, starting heating to a first temperature at an initial temperature, heating to a second temperature at the first temperature and heating to a third temperature at the second temperature, respectively observing the thermal deformation amount, heating to the first temperature from the initial temperature, heating to the second temperature from the initial temperature and heating to the third temperature from the initial temperature, respectively observing the thermal deformation amount, and carrying out a drawing test to obtain a first drawing thermal deformation amount, a second drawing thermal deformation amount and a third drawing thermal deformation amount; through designing different test environments and different sample lengths, different combined tests can obtain various thermal deformation parameters, the high temperature resistance of the nylon heat insulation strip is comprehensively judged according to the various thermal deformation parameters obtained by the tests, and the method has the advantage of high detection precision.
Description
Technical Field
The invention relates to the technical field of performance detection of heat insulation strips, in particular to a high-temperature-resistant detection method of a nylon heat insulation strip.
Background
Along with the continuous increase of environmental pollution and energy consumption in the modern society, the requirements of people on energy conservation and emission reduction are gradually increased, and aluminum alloy doors and windows in the building industry also face the problem. The aluminum alloy door and window has the advantages of portability, easy processing, good flame retardance, recycling, attractive appearance and the like, and is widely applied to the building industry.
Nylon is one of the most widely used engineering plastics, has excellent performances such as high heat resistance, wear resistance, solvent resistance and the like, has small heat conductivity coefficient when being reinforced by glass fiber, can well play a role in blocking heat conduction, has proved to be used as a heat insulation strip, and is widely applied to the heat insulation treatment process of door and window profiles at present.
The high temperature resistance detection is a detection method for checking the thermal deformation performance of the nylon thermal insulation strip, and the nylon thermal insulation strip is likely to generate thermal deformation when being used in a higher temperature environment, so that the thermal deformation performance of the nylon thermal insulation strip is required to be detected to ensure the quality of the product in normal use, but the detection method for the thermal deformation performance of the nylon thermal insulation strip is single in detection means, poor in detection accuracy and difficult to be used as a judgment basis for checking the thermal deformation performance of the nylon thermal insulation strip. Therefore, the invention provides a high temperature resistant detection method of a nylon heat insulation strip, which aims to solve the defects in the prior art.
Disclosure of Invention
Aiming at the problems, the invention aims to provide the high temperature resistant detection method for the nylon heat insulation strip, various thermal deformation parameters can be obtained through designing different test environments and different sample lengths and different combined tests, the high temperature resistant performance of the nylon heat insulation strip is comprehensively judged according to the various thermal deformation parameters obtained through the tests, the method has the advantage of high detection precision, the detection steps of the method can be independently selected according to actual requirements, and the detection steps are high in flexibility.
In order to achieve the purpose of the invention, the invention is realized by the following technical scheme:
a high temperature resistant detection method of a nylon heat insulation strip comprises the following steps:
step one: preparing a sample, taking a nylon heat insulation strip of the same production batch as a sample object, then taking three sections of nylon heat insulation strips with the length of 10cm as a first short sample, a second short sample, a third short sample, a fourth short sample, a fifth short sample, a sixth short sample and a seventh short sample respectively, taking three sections of nylon heat insulation strips with the length of 20cm as a first middle sample, a second middle sample, a third middle sample, a fourth middle sample, a fifth middle sample, a sixth middle sample and a seventh middle sample respectively, and finally taking three sections of nylon heat insulation strips with the length of 30cm as a first long sample, a second long sample, a third long sample, a fourth long sample and a fifth long sample, a sixth long sample and a seventh long sample respectively;
step two: preparing four groups of ovens as heating equipment, respectively marking as a first oven, a second oven, a third oven and a fourth oven, respectively placing a first short sample, a first middle sample and a first long sample in the first ovens, heating from an initial temperature to a first temperature, observing the thermal deformation of the first short sample, the first middle sample and the first long sample in the heating process, and marking as a first thermal deformation;
step three: continuously heating to a second temperature on the basis of the first temperature, and observing the thermal deformation amounts of the first short sample, the first middle sample and the first long sample in the heating process, wherein the thermal deformation amounts are recorded as second thermal deformation amounts;
step four: continuously heating to a third temperature on the basis of the second temperature, and observing the thermal deformation amounts of the first short sample, the first middle sample and the first long sample in the heating process, wherein the thermal deformation amounts are recorded as third thermal deformation amounts;
step five: placing a second short sample, a second middle sample, a second long sample, a fifth short sample, a fifth middle sample and a fifth long sample into a second oven, heating the second oven from an initial temperature to a first temperature, observing the thermal deformation of the second short sample, the second middle sample and the second long sample, recording the thermal deformation as a first period thermal deformation, and taking out the fifth short sample, the fifth middle sample and the fifth long sample for a drawing test to obtain a first drawing thermal deformation;
step six: placing a third short sample, a third middle sample, a third long sample, a sixth short sample, a sixth middle sample and a sixth long sample into a third oven, heating the third oven from an initial temperature to a second temperature, observing the thermal deformation of the third short sample, the third middle sample and the third long sample, recording the thermal deformation as a second period thermal deformation, and taking out the sixth short sample, the sixth middle sample and the sixth long sample for a drawing test to obtain a second thermal deformation;
step seven: and (3) placing the fourth short sample, the fourth middle sample, the fourth long sample, the seventh short sample, the seventh middle sample and the seventh long sample into a fourth oven, heating the temperature of the fourth oven from the initial temperature to a third temperature, observing the thermal deformation of the fourth short sample, the fourth middle sample and the fourth long sample, recording the thermal deformation as a third period thermal deformation, and taking out the seventh short sample, the seventh middle sample and the seventh long sample for a drawing test to obtain a third drawing thermal deformation.
The further improvement is that: before the nylon heat insulation strip is taken as a sample in the first step, the nylon heat insulation strip needs to be cleaned, so that no dust, oil-free, alkaline substance residue and acidic substance residue are left on the surface, and when the sample is taken, the sample needs to be taken at intervals, and the interval length is 20-30cm.
The further improvement is that: the air circulation in the first, second, third and fourth ovens should be maintained to meet the thermal degradation rate, ensuring that the test environment in the ovens is not affected by accumulation of decomposition products or oxygen reduction.
The further improvement is that: the specific process of the drawing test in the fifth step is as follows: and after taking out the fifth short sample, the fifth middle sample and the fifth long sample, respectively fixing the fifth short sample, the fifth middle sample and the fifth long sample in the same test environment by using the same drawing equipment, and then applying the same force to respectively draw the fifth short sample, the fifth middle sample and the fifth long sample to obtain the first drawing thermal deformation.
The further improvement is that: and in the fifth step, different forces are applied to pull-out tests are respectively carried out on the fifth short sample, the fifth middle sample and the fifth long sample according to the difference of the lengths of the fifth short sample, the fifth middle sample and the fifth long sample, so that the first period of thermal deformation pulling quantity is obtained.
The further improvement is that: the specific process of the drawing test in the step six is as follows: and after taking out the sixth short sample, the sixth middle sample and the sixth long sample, respectively fixing the sixth short sample, the sixth middle sample and the sixth long sample in the same test environment by using the same drawing equipment, and then applying the same force to respectively draw the sixth short sample, the sixth middle sample and the sixth long sample to obtain the second drawing thermal deformation.
The further improvement is that: and in the step six, different forces are applied according to the difference of the lengths of the sixth short sample, the sixth middle sample and the sixth long sample, and the drawing test is carried out on the sixth short sample, the sixth middle sample and the sixth long sample respectively, so that the drawing thermal deformation amount in the second period is obtained.
The further improvement is that: the specific process of the drawing test in the step seven is as follows: and after taking out the seventh short sample, the seventh middle sample and the seventh long sample, respectively fixing the seventh short sample, the seventh middle sample and the seventh long sample in the same test environment by using the same drawing equipment, and then applying the same force to respectively draw the seventh short sample, the seventh middle sample and the seventh long sample to obtain a second drawing thermal deformation amount.
The further improvement is that: and in the seventh step, different forces are applied according to the difference of the lengths of the seventh short sample, the seventh middle sample and the seventh long sample, and the drawing test is carried out on the seventh short sample, the seventh middle sample and the seventh long sample respectively, so that the drawing thermal deformation of the third period is obtained.
The further improvement is that: the force applied in the drawing test process is calculated by combining the heated temperature of the sample and the strength of the sample, so that the applied force is ensured to be smaller than the breaking strength of the sample.
The beneficial effects of the invention are as follows: according to the method, various thermal deformation parameters can be obtained through designing different test environments and different sample lengths and different combined tests, the high temperature resistance of the nylon heat insulation strip can be comprehensively judged according to the various thermal deformation parameters obtained through the tests, the method has the advantage of high detection precision, the thermal deformation change parameters of the nylon heat insulation strip samples with different lengths at the same test temperature and the thermal deformation change parameters of the nylon heat insulation strip samples with the same length at different test temperatures can be obtained, the thermal deformation change parameters of the nylon heat insulation strip samples with different lengths at continuous temperature rise can be obtained, and the thermal deformation change parameters of the nylon heat insulation strip samples with different lengths at periodic temperature rise can be obtained.
Detailed Description
The present invention will be further described in detail with reference to the following examples, which are only for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.
The embodiment provides a high temperature resistant detection method of a nylon heat insulation strip, which comprises the following steps:
step one: preparing samples, namely taking nylon heat insulation strips with the same production batch as sample objects, then taking three sections of nylon heat insulation strips with the length of 10cm as a first short sample, a second short sample, a third short sample, a fourth short sample, a fifth short sample, a sixth short sample and a seventh short sample respectively, taking three sections of nylon heat insulation strips with the length of 20cm as a first middle sample, a second middle sample, a third middle sample, a fourth middle sample, a fifth middle sample, a sixth middle sample and a seventh middle sample respectively, finally taking three sections of nylon heat insulation strips with the length of 30cm as a first long sample, a second long sample, a third long sample, a fourth long sample and a fifth long sample respectively, and cleaning the nylon heat insulation strips before taking the nylon heat insulation strips as the samples, so as to ensure that the surfaces are free of dust, oil and alkaline substances residues and acid substances residues, and taking the samples at intervals of 25cm;
step two: four groups of ovens are prepared as heating equipment, the four groups of ovens are respectively marked as a first oven, a second oven, a third oven and a fourth oven, air circulation in the first oven, the second oven, the third oven and the fourth oven is kept to be capable of meeting thermal degradation rate, test environment in the ovens is ensured not to be influenced by accumulation of decomposition products or oxygen reduction, then a first short sample, a first middle sample and a first long sample are respectively placed in the first oven, heating is started to a first temperature from an initial temperature, thermal deformation amounts of the first short sample, the first middle sample and the first long sample in a heating process are observed, and the thermal deformation amounts are marked as first thermal deformation amounts. (in this example, the initial temperature is 28 ℃ and the first temperature is 75 ℃);
step three: continuing to raise the temperature to a second temperature (in the embodiment, the second temperature is 150 ℃) on the basis of the first temperature, and observing the thermal deformation amounts of the first short sample, the first middle sample and the first long sample in the heating process, wherein the thermal deformation amounts are recorded as second thermal deformation amounts;
step four: continuing to raise the temperature to a third temperature on the basis of the second temperature, (in the embodiment, the third temperature is 250 ℃) and observing the thermal deformation amounts of the first short sample, the first middle sample and the first long sample in the heating process, wherein the thermal deformation amounts are recorded as third thermal deformation amounts;
step five: placing a second short sample, a second middle sample, a second long sample, a fifth short sample, a fifth middle sample and a fifth long sample into a second oven, heating the temperature of the second oven from an initial temperature to a first temperature, observing the thermal deformation of the second short sample, the second middle sample and the second long sample, recording the thermal deformation as a first period thermal deformation, taking out the fifth short sample, the fifth middle sample and the fifth long sample for a drawing test, and obtaining a first drawing thermal deformation, wherein the specific process of the drawing test is as follows: after taking out the fifth short sample, the fifth middle sample and the fifth long sample, respectively fixing the fifth short sample, the fifth middle sample and the fifth long sample in the same test environment by using the same drawing equipment, then applying the same force to respectively draw the fifth short sample, the fifth middle sample and the fifth long sample to obtain a first drawing thermal deformation amount, and then applying different forces to respectively carry out drawing tests on the fifth short sample, the fifth middle sample and the fifth long sample according to the different lengths of the fifth short sample, the fifth middle sample and the fifth long sample to obtain a first period drawing thermal deformation amount;
step six: placing a third short sample, a third middle sample, a third long sample, a sixth short sample, a sixth middle sample and a sixth long sample into a third oven, heating the temperature of the third oven from an initial temperature to a second temperature, observing the thermal deformation of the third short sample, the third middle sample and the third long sample, recording the thermal deformation as a second period thermal deformation, and taking out the sixth short sample, the sixth middle sample and the sixth long sample for a drawing test to obtain a second thermal deformation, wherein the specific process of the drawing test is as follows: after taking out the sixth short sample, the sixth middle sample and the sixth long sample, respectively fixing the sixth short sample, the sixth middle sample and the sixth long sample in the same test environment by using the same drawing equipment, then applying the same force to respectively draw the sixth short sample, the sixth middle sample and the sixth long sample to obtain a second drawing thermal deformation amount, and then applying different forces to respectively carry out drawing tests on the sixth short sample, the sixth middle sample and the sixth long sample according to the different lengths of the sixth short sample, the sixth middle sample and the sixth long sample to obtain a second period drawing thermal deformation;
step seven: placing a fourth short sample, a fourth middle sample, a fourth long sample, a seventh short sample, a seventh middle sample and a seventh long sample into a fourth oven, heating the temperature of the fourth oven from an initial temperature to a third temperature (the third temperature is 250 ℃), observing the thermal deformation of the fourth short sample, the fourth middle sample and the fourth long sample, recording the thermal deformation as a third period thermal deformation, and taking out the seventh short sample, the seventh middle sample and the seventh long sample for a drawing test to obtain a third drawing thermal deformation, wherein the specific process of the drawing test is as follows: and after taking out the seventh short sample, the seventh middle sample and the seventh long sample, respectively fixing the seventh short sample, the seventh middle sample and the seventh long sample in the same test environment by using the same drawing equipment, then applying the same force to respectively draw the seventh short sample, the seventh middle sample and the seventh long sample to obtain a second drawing thermal deformation amount, and then applying different forces to respectively carry out drawing tests on the seventh short sample, the seventh middle sample and the seventh long sample according to the difference of the lengths of the seventh short sample, the seventh middle sample and the seventh long sample to obtain a third period drawing thermal deformation amount, wherein the applied force in the drawing test process is calculated by combining the heated temperature of the sample and the strength of the sample per se, so that the applied force is ensured to be smaller than the breaking strength of the sample.
In this example, the prepared nylon heat insulating strip samples are shown in table 1, and after the high temperature resistant detection operation in this example is performed on the samples in table 1, the results shown in table 2, table 3 and table 4 are obtained:
TABLE 1
TABLE 2
TABLE 3 Table 3
TABLE 4 Table 4
According to the results shown in tables 2, 3 and 4, the invention can obtain various heat deformation parameters through designing different test environments and different sample lengths and different combined tests, and can comprehensively judge the high temperature resistance of the nylon heat insulation strip, so that the detection result is more comprehensive and accurate than that of the nylon heat insulation strip by adopting a single means.
According to the method, various thermal deformation parameters can be obtained through designing different test environments and different sample lengths and different combined tests, the high temperature resistance of the nylon heat insulation strip can be comprehensively judged according to the various thermal deformation parameters obtained through the tests, the method has the advantage of high detection precision, the thermal deformation change parameters of the nylon heat insulation strip samples with different lengths at the same test temperature and the thermal deformation change parameters of the nylon heat insulation strip samples with the same length at different test temperatures can be obtained, the thermal deformation change parameters of the nylon heat insulation strip samples with different lengths at continuous temperature rise can be obtained, and the thermal deformation change parameters of the nylon heat insulation strip samples with different lengths at periodic temperature rise can be obtained.
The foregoing shows and describes the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A high temperature resistant detection method of a nylon heat insulation strip is characterized in that: the method comprises the following steps:
step one: preparing a sample, taking a nylon heat insulation strip of the same production batch as a sample object, then taking three sections of nylon heat insulation strips with the length of 10cm as a first short sample, a second short sample, a third short sample, a fourth short sample, a fifth short sample, a sixth short sample and a seventh short sample respectively, taking three sections of nylon heat insulation strips with the length of 20cm as a first middle sample, a second middle sample, a third middle sample, a fourth middle sample, a fifth middle sample, a sixth middle sample and a seventh middle sample respectively, and finally taking three sections of nylon heat insulation strips with the length of 30cm as a first long sample, a second long sample, a third long sample, a fourth long sample, a fifth long sample, a sixth long sample and a seventh long sample respectively;
step two: preparing four groups of ovens as heating equipment, respectively marking as a first oven, a second oven, a third oven and a fourth oven, respectively placing a first short sample, a first middle sample and a first long sample in the first ovens, heating from an initial temperature to a first temperature, observing the thermal deformation of the first short sample, the first middle sample and the first long sample in the heating process, and marking as a first thermal deformation;
step three: continuously heating to a second temperature on the basis of the first temperature, and observing the thermal deformation amounts of the first short sample, the first middle sample and the first long sample in the heating process, wherein the thermal deformation amounts are recorded as second thermal deformation amounts;
step four: continuously heating to a third temperature on the basis of the second temperature, and observing the thermal deformation amounts of the first short sample, the first middle sample and the first long sample in the heating process, wherein the thermal deformation amounts are recorded as third thermal deformation amounts;
step five: placing a second short sample, a second middle sample, a second long sample, a fifth short sample, a fifth middle sample and a fifth long sample into a second oven, heating the second oven from an initial temperature to a first temperature, observing the thermal deformation of the second short sample, the second middle sample and the second long sample, recording the thermal deformation as a first period thermal deformation, and taking out the fifth short sample, the fifth middle sample and the fifth long sample for a drawing test to obtain a first drawing thermal deformation;
step six: placing a third short sample, a third middle sample, a third long sample, a sixth short sample, a sixth middle sample and a sixth long sample into a third oven, heating the third oven from an initial temperature to a second temperature, observing the thermal deformation of the third short sample, the third middle sample and the third long sample, recording the thermal deformation as a second period thermal deformation, and taking out the sixth short sample, the sixth middle sample and the sixth long sample for a drawing test to obtain a second thermal deformation;
step seven: and (3) placing the fourth short sample, the fourth middle sample, the fourth long sample, the seventh short sample, the seventh middle sample and the seventh long sample into a fourth oven, heating the temperature of the fourth oven from the initial temperature to a third temperature, observing the thermal deformation of the fourth short sample, the fourth middle sample and the fourth long sample, recording the thermal deformation as a third period thermal deformation, and taking out the seventh short sample, the seventh middle sample and the seventh long sample for a drawing test to obtain a third drawing thermal deformation.
2. The method for detecting the high temperature resistance of the nylon heat insulation strip according to claim 1, which is characterized in that: before the nylon heat insulation strip is taken as a sample in the first step, the nylon heat insulation strip needs to be cleaned, so that no dust, oil-free, alkaline substance residue and acidic substance residue are left on the surface, and when the sample is taken, the sample needs to be taken at intervals, and the interval length is 20-30cm.
3. The method for detecting the high temperature resistance of the nylon heat insulation strip according to claim 1, which is characterized in that: the air circulation in the first, second, third and fourth ovens should be maintained to meet the thermal degradation rate, ensuring that the test environment in the ovens is not affected by accumulation of decomposition products or oxygen reduction.
4. The method for detecting the high temperature resistance of the nylon heat insulation strip according to claim 1, which is characterized in that: the specific process of the drawing test in the fifth step is as follows: and after taking out the fifth short sample, the fifth middle sample and the fifth long sample, respectively fixing the fifth short sample, the fifth middle sample and the fifth long sample in the same test environment by using the same drawing equipment, and then applying the same force to respectively draw the fifth short sample, the fifth middle sample and the fifth long sample to obtain the first drawing thermal deformation.
5. The method for detecting the high temperature resistance of the nylon heat insulation strip according to claim 4, which is characterized in that: and in the fifth step, different forces are applied to pull-out tests are respectively carried out on the fifth short sample, the fifth middle sample and the fifth long sample according to the difference of the lengths of the fifth short sample, the fifth middle sample and the fifth long sample, so that the first period of thermal deformation pulling quantity is obtained.
6. The method for detecting the high temperature resistance of the nylon heat insulation strip according to claim 1, which is characterized in that: the specific process of the drawing test in the step six is as follows: and after taking out the sixth short sample, the sixth middle sample and the sixth long sample, respectively fixing the sixth short sample, the sixth middle sample and the sixth long sample in the same test environment by using the same drawing equipment, and then applying the same force to respectively draw the sixth short sample, the sixth middle sample and the sixth long sample to obtain the second drawing thermal deformation.
7. The method for detecting the high temperature resistance of the nylon heat insulation strip according to claim 6, which is characterized in that: and in the step six, different forces are applied according to the difference of the lengths of the sixth short sample, the sixth middle sample and the sixth long sample, and the drawing test is carried out on the sixth short sample, the sixth middle sample and the sixth long sample respectively, so that the drawing thermal deformation amount in the second period is obtained.
8. The method for detecting the high temperature resistance of the nylon heat insulation strip according to claim 1, which is characterized in that: the specific process of the drawing test in the step seven is as follows: and after taking out the seventh short sample, the seventh middle sample and the seventh long sample, respectively fixing the seventh short sample, the seventh middle sample and the seventh long sample in the same test environment by using the same drawing equipment, and then applying the same force to respectively draw the seventh short sample, the seventh middle sample and the seventh long sample to obtain a second drawing thermal deformation amount.
9. The method for detecting the high temperature resistance of the nylon heat insulation strip according to claim 8, which is characterized in that: and in the seventh step, different forces are applied according to the difference of the lengths of the seventh short sample, the seventh middle sample and the seventh long sample, and the drawing test is carried out on the seventh short sample, the seventh middle sample and the seventh long sample respectively, so that the drawing thermal deformation of the third period is obtained.
10. The method for detecting the high temperature resistance of the nylon heat insulation strip according to claim 1, which is characterized in that: the force applied in the drawing test process is calculated by combining the heated temperature of the sample and the strength of the sample, so that the applied force is ensured to be smaller than the breaking strength of the sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011013631.9A CN112014421B (en) | 2020-09-24 | 2020-09-24 | High temperature resistance detection method for nylon heat insulation strip |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03269352A (en) * | 1990-03-20 | 1991-11-29 | Toray Res Center:Kk | Method and instrument for measuring thermal expansion coefficient of long sized sample |
| CN103487331A (en) * | 2013-09-30 | 2014-01-01 | 中国能源建设集团广东省电力设计研究院 | Judgment method of thermal ageing sampling time of XLPE material |
| CN106092763A (en) * | 2016-06-07 | 2016-11-09 | 四川华西九方电缆有限公司 | Detection method based on cable insulating high temperature resistant sheath pressure |
| CN106092777A (en) * | 2016-06-07 | 2016-11-09 | 四川华西九方电缆有限公司 | Detection method based on cable insulating sheath heat extensibility energy |
| CN107163562A (en) * | 2017-07-05 | 2017-09-15 | 肥西县碧涛建材有限公司 | It is a kind of for heat insulating strip of aluminum alloy doors and windows and preparation method thereof |
| CN110412067A (en) * | 2019-08-16 | 2019-11-05 | 武汉钢铁有限公司 | A kind of thermal modeling test determines the test method of austempering temperature |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6776520B2 (en) * | 2001-03-16 | 2004-08-17 | Arizona Board Of Regents | Method for determining a coefficient of thermal expansion and apparatus therefor |
-
2020
- 2020-09-24 CN CN202011013631.9A patent/CN112014421B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03269352A (en) * | 1990-03-20 | 1991-11-29 | Toray Res Center:Kk | Method and instrument for measuring thermal expansion coefficient of long sized sample |
| CN103487331A (en) * | 2013-09-30 | 2014-01-01 | 中国能源建设集团广东省电力设计研究院 | Judgment method of thermal ageing sampling time of XLPE material |
| CN106092763A (en) * | 2016-06-07 | 2016-11-09 | 四川华西九方电缆有限公司 | Detection method based on cable insulating high temperature resistant sheath pressure |
| CN106092777A (en) * | 2016-06-07 | 2016-11-09 | 四川华西九方电缆有限公司 | Detection method based on cable insulating sheath heat extensibility energy |
| CN107163562A (en) * | 2017-07-05 | 2017-09-15 | 肥西县碧涛建材有限公司 | It is a kind of for heat insulating strip of aluminum alloy doors and windows and preparation method thereof |
| CN110412067A (en) * | 2019-08-16 | 2019-11-05 | 武汉钢铁有限公司 | A kind of thermal modeling test determines the test method of austempering temperature |
Non-Patent Citations (2)
| Title |
|---|
| 玻璃纤维增强尼龙66长期老化性能研究;孙洲渝;Jaapvander Woude;Shirley Lai;Joe Yu;;工程塑料应用(10);全文 * |
| 玻纤长度及分布对玻纤增强尼龙66隔热条性能的影响;刘强;缪明松;刘艳斌;阮镜财;卢景豪;;材料研究与应用(04);全文 * |
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