CN111323415A - Testing device and testing method for detecting smoke toxicity generated by high polymer material - Google Patents
Testing device and testing method for detecting smoke toxicity generated by high polymer material Download PDFInfo
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- 238000012360 testing method Methods 0.000 title claims abstract description 43
- 231100000419 toxicity Toxicity 0.000 title claims abstract description 27
- 230000001988 toxicity Effects 0.000 title claims abstract description 27
- 239000002861 polymer material Substances 0.000 title claims abstract description 17
- 238000005070 sampling Methods 0.000 claims abstract description 71
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- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 11
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 11
- 229910001220 stainless steel Inorganic materials 0.000 claims description 10
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
- G01N21/783—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour for analysing gases
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
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- G01N1/2226—Sampling from a closed space, e.g. food package, head space
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- G01N1/2247—Sampling from a flowing stream of gas
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- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/76—Chemiluminescence; Bioluminescence
- G01N21/766—Chemiluminescence; Bioluminescence of gases
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2226—Sampling from a closed space, e.g. food package, head space
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Abstract
The invention provides a testing device and a testing method for detecting smoke toxicity generated by a high polymer material, and relates to the field of smoke toxicity testing. The test device of the present invention includes: the smoke density box is used for providing a closed space for the combustion of the high polymer material so as to generate smoke for testing smoke density and toxicity; the smoke sampling device is arranged outside the smoke density box and is communicated with the smoke density box through a pipeline; and the switch valve is arranged on the pipeline between the smoke density box and the smoke sampling device and used for controlling the conduction and the cut-off of the pipeline. The invention uses a completely external detection mode, and all detection instruments are arranged outside the smoke density box for gas analysis, thereby reducing the deviation of the test result, avoiding the untimely discovery of abnormal conditions of the instruments in the smoke density box, simplifying the pipeline, avoiding the complex installation and the fixed position of the analysis instruments, and simplifying the operation.
Description
Technical Field
The invention relates to the field of smoke toxicity test, in particular to a test device and a test method for detecting smoke toxicity of a high polymer material.
Background
The smoke density box is a device for detecting the smoke density of the high polymer material. The specific detection principle is that the material is heated by a thermal radiation source and/or ignited by small flame in a closed space, the material is combusted to release smoke, and the change of the optical path transmittance in the box is detected in real time by a photomultiplier in the whole test process to calculate the smoke density value. In order to detect the smoke density of the high polymer material and the smoke toxicity of the material, an air suction pipeline can be installed at the top end of a smoke density box, sampling is started immediately after the smoke density detection is finished, and smoke is sucked through a suction pump at the tail end of the pipeline, so that the toxic gas is qualitatively and quantitatively analyzed.
Toxic gas generated by the combustion of high molecular material usually contains CO and CO2、NOX、SO2HCl, HCN, HF and HBr. For the detection of these gaseous inorganic contaminants, available analytical methods include colorimetry, non-dispersive infrared spectroscopy, potentiometry, liquid ion chromatography, or flue gas analyzer. The detection principle of the colorimetric method and the potentiometric method applied to the smoke density box at present is as follows: the colorimetric tube and the gas absorption bottle are arranged in the smoke density box, the smoke density box is respectively connected with a suction pump outside the box through connecting pipes, a certain amount of gas is sucked by the suction pump, the gas respectively flows to the colorimetric tube and the gas absorption bottle, partial smoke is in contact with substances in the colorimetric tube to generate chemical reaction, and roots are generatedCalculating the gas content according to the color change of the color column, absorbing part of smoke into the absorption liquid of the gas absorption bottle, and detecting the solution by a potentiometric method to calculate the content of each gas.
The smoke box is closed in the whole combustion detection process and cannot be opened midway. Therefore, before the combustion test, the gas absorption bottle and the colorimetric tube need to be put into the smoke box in advance, and the smoke can be taken out after the smoke density test is finished and the waste gas in the smoke box is exhausted. The gas sampling time depends on the type of gas to be detected and the analysis method, and is about 20s shorter and about 5min longer, while the non-sampling time is ten minutes and more minutes shorter and thirty minutes longer. This means that, during the non-sampling time, even if the gas is not drawn by using the suction pump, the gas released by the combustion of the sample can enter the absorption bottle and the colorimetric tube through the gas inlet in a diffusion mode, and part of the smoke is absorbed into the absorption liquid in the absorption bottle or reacts with the chemical substances in the colorimetric tube, so that the test result is not accurate enough, the data is higher, and no method can be used for correcting the data at present, and the larger the smoke generated by the combustion of the material is, the larger the deviation is.
Other hidden dangers and difficulties also exist in the colorimetric method and the potentiometric method. Hidden danger: if abnormal conditions of the absorption bottle and the colorimetric tube occur in the test process, for example, smoke particles are too large to cause air inlet blockage, the abnormal conditions are difficult to be found through a narrow observation window under a dark background with a distorted smoke in a smoke density box, and therefore the detection result is influenced; difficulty is as follows: the smoke density box is not provided with any device capable of supporting the gas absorption bottle, and if a support frame is specially designed for the absorption bottle, the arrangement of a combustion device below the absorption bottle is hindered; if a supporting rod is designed and mechanically installed on the smoke density box, the protective coating and the box wall of the inner wall of the smoke density box can be damaged, the service life of the smoke density box is influenced, and the smoke density box is damaged difficultly.
Different gas analysis methods that are applied to the smoke box at present all use different detection pipeline, for example the colorimetry uses the pipeline of being connected the colour comparison tube, and the potentiometric uses the pipeline of being connected gaseous absorption bottle, and flue gas analyzer method uses the pipeline of connecting the sampling pump of the appointed extraction velocity of flow of control, and different mutual different pipelines of using carry out the analysis and detect between the different analysis method. Moreover, the same analysis method corresponds to a plurality of gas detection pipelines, for example, 3 gas colorimetric methods are used, and the colorimetric tubes used by different gases are different, which means that the colorimetric method has 3 detection pipelines. No matter which analysis method or gas is used on the pipeline, a flow meter and a sampling pump are connected, and at least one switch needs to be controlled. When the toxicity of cigarette detected, still need compromise the smoke density and detect, cause the pipeline various, the installation is loaded down with trivial details, and a plurality of analytical equipment only can put near the smoke density case, and the position is put and is died admittedly, operates inconveniently.
Disclosure of Invention
The invention aims to solve the problems of high detection result, difficult installation, potential danger, more pipelines, inconvenient operation and the like of a colorimetric method and a potentiometric method in the existing available gas analysis method. The testing device and the testing method can solve the problems and meet different detection requirements of customers. Therefore, the invention adopts the following technical scheme.
The invention provides a testing device for detecting smoke toxicity generated by high polymer materials, which comprises:
the smoke density box is used for providing a closed space for the combustion of the high polymer material so as to generate smoke for testing smoke density and toxicity;
the smoke sampling device is arranged outside the smoke density box and is communicated with the smoke density box through a pipeline;
and the switch valve is arranged on the pipeline between the smoke density box and the smoke sampling device and used for controlling the conduction and the cut-off of the pipeline.
Preferably, the testing device of the present invention further comprises a smoke toxicity detection device independently disposed, and the smoke toxicity detection device comprises: a colorimetric cylinder and an analytical instrument; the analytical instrument comprises one or more of a non-dispersive infrared instrument, a chemiluminescence azotometer, a potential analyzer, a titrator, a liquid phase ion chromatograph and a flue gas analyzer.
Preferably, the pipeline comprises a stainless steel pipe and a polytetrafluoroethylene pipe, one end of the stainless steel pipe is connected with the polytetrafluoroethylene pipe, and the other end of the stainless steel pipe extends into the smoke density box; the switch valve and the smoke sampling device are both arranged on the polytetrafluoroethylene tube.
Preferably, the smoke density box is provided with two pipelines from inside to outside in parallel, wherein the two pipelines are respectively a first pipeline and a second pipeline; a first switching valve is arranged on the first pipeline; a second switching valve is arranged on the second pipeline; the flue gas sampling device comprises a gas sampling assembly arranged on the first pipeline and a liquid sampling assembly arranged on the second pipeline.
Preferably, the gaseous sampling assembly comprises a first flow meter, a first sampling pump and an air bag which are arranged on the first pipeline in sequence; the first flowmeter is connected to the first switch valve and is used for controlling the flow rate of the flue gas; the liquid sampling assembly comprises a gas absorption bottle, a second flowmeter and a second sampling pump which are sequentially arranged on the second pipeline; the gas absorption bottle is connected to the second switch valve and used for absorbing a certain volume of smoke into the absorption liquid in the gas absorption bottle so as to detect and calculate gas components and content; the first sampling pump and the second sampling pump are further provided with a countdown switch for presetting combustion time, so that after the combustion time is finished, the first sampling pump and the second sampling pump are started.
The invention also provides a test method for detecting smoke toxicity of the high polymer material, which is applied to the test device, wherein:
the smoke in the first pipeline is collected through the air bag, and gas analysis is carried out by a colorimetry, a non-dispersive infrared instrument, a chemiluminescence method or a smoke analyzer;
and the smoke in the second pipeline is collected through the gas absorption bottle, and liquid analysis is carried out by a potentiometry method, a titration method or a liquid-phase ion chromatography method.
Preferably, the test method of the present invention comprises the following test steps:
and (3) material combustion: setting combustion time in advance through the countdown switch, placing a material to be tested in the smoke density box for combustion, and starting the first sampling pump, the second sampling pump, the first switch valve and the second switch valve after the combustion time is reached so that smoke enters the first pipeline and the second pipeline respectively;
collecting flue gas: after the gas bag collects the flue gas with a certain volume, closing the first switch valve and the first sampling pump; after the gas absorption bottle collects the flue gas with a certain volume, the second switch valve and the second sampling pump are closed;
flue gas analysis: taking out the air bag and the gas absorption bottle; connecting the air bag to a gas detector, and extracting a certain volume of flue gas for analysis; the solution in the gas absorption bottle was analyzed with a liquid detector.
Preferably, the analytical method is selected according to the gas component to be detected in the following manner:
(1) and (3) qualitative analysis: qualitative analysis is carried out on all gas components by using a colorimetric method;
(2) quantitative analysis:
quantitative analysis of HCl, HCN, HF and HBr using potentiometric, titration or liquid ion chromatography analysis of anions;
pair of CO and CO using a non-dispersive infrared spectrometer2Carrying out quantitative analysis;
using chemiluminescence method for NOXCarrying out quantitative analysis;
pair of SO using liquid ion chromatography2Quantitative analysis was performed.
The invention has the beneficial effects that:
(1) use completely external detection mode, the detecting instrument is whole to carry out gas analysis outside the smoke density case, is about to colorimetric tube and gas absorption bottle also move outside the smoke density case, reduces the test result deviation, avoids the emergence of the instrument in the smoke density incasement abnormal conditions and the untimely nature of discovery, avoids destroying tank wall and loaded down with trivial details glassware installation.
(2) Simplify the pipeline, the use of a plurality of sampling pumps, a plurality of flowmeter and a plurality of switches avoids installing loaded down with trivial details and analytical instrument position solid, has simplified the operation, reduces the total input of annex.
(3) By using the countdown switch, the sampling time can be controlled more accurately, and multiple switching operations can be avoided.
(4) Detection method covers CO and CO2、NOX、SO2The 8 gases HCl, HCN, HF and HBr and all the analytical methods which can be used correspondingly. Furthermore, it can be used for the analysis of other gaseous pollutants, such as formaldehyde. The requirements of different test applicants on the gas to be tested and the used analytical method are met, and the selection direction of the gas analytical method is provided.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings used in the embodiments will be briefly described below. It is understood that the following drawings only show some embodiments of the invention and are therefore not to be considered limiting of its scope, for a person skilled in the art to which it pertains, from which further related drawings can be derived without inventive effort.
FIG. 1 is a schematic diagram of the connection relationship of the testing device of the present invention.
Reference numerals: a smoke density box 1; a first on-off valve 2-1; a second on-off valve 2-2; a gas absorption bottle 3; a countdown switch 4; a first flow meter 5-1; a second flow meter 5-2; an air bag 6; a first sampling pump 7-1; a second sampling pump 7-2; a flue gas sampling device 8; a polytetrafluoroethylene tube 9; a colorimetric cylinder 10; a stainless steel pipe 11; an analysis instrument 12.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The instruments used are not indicated by the manufacturer, and are all conventional products available by commercial purchase.
The invention provides a testing device for detecting smoke toxicity generated by a high polymer material, as shown in figure 1, comprising:
the smoke density box 1 is used for providing a closed space for the combustion of the high polymer material so as to generate smoke for testing smoke density and toxicity. The smoke density box 1 is also internally provided with a photomultiplier which is used for detecting the change of the optical path transmittance in the box in real time and is used for detecting the density of smoke.
The testing device not only tests the smoke density, but also tests the smoke toxicity, namely tests the components and the content of the smoke. For this reason, this testing arrangement still sets up flue gas sampling device 8 and ooff valve.
Wherein, the smoke sampling device 8 is arranged outside the smoke density box and is communicated with the smoke density box 1 through a pipeline.
Wherein, the switch valve is installed on the pipeline between smoke density case 1 and smoke sampling device 8 for the switching on and off of control pipeline.
Furthermore, the testing device also comprises independently arranged smoke toxicity detection equipment. The smoke toxicity detection device comprises: a cuvette 10 and an analyser 12. The analyzer 12 includes one or more of a non-dispersive infrared spectrometer, a chemiluminescent nitrogen determinator, a potentiometric analyzer, a titrator, a liquid ion chromatograph, and a flue gas analyzer.
The invention uses a completely external detection mode, and the detection instruments carry out gas analysis outside the smoke density box, thereby reducing the deviation of the test result, avoiding the abnormal condition and the untimely time of the instrument in the smoke density box, simplifying the pipeline, avoiding the fussy installation and the position fixation of the analysis instrument, and simplifying the operation.
Specifically, the pipeline installed on the testing device of the invention comprises a stainless steel pipe 11 and a polytetrafluoroethylene pipe 9. One end of the stainless steel pipe 11 is connected with the polytetrafluoroethylene pipe 9, and the other end extends into the smoke density box 1. The switch valve and the flue gas sampling device 8 are both arranged on the polytetrafluoroethylene tube 9. The stainless steel tube 11 is fire-resistant, does not deform, does not deteriorate, does not react with smoke, and is suitable for being installed in the smoke density box 1. The polytetrafluoroethylene tube 9 is high temperature resistant, corrosion resistant, non-reactive with flue gas, and suitable for conveying flue gas.
Specifically, the smoke density box 1 is provided with two pipelines from inside to outside in parallel, namely a first pipeline and a second pipeline; a first switching valve 2-1 is arranged on the first pipeline; a second switching valve 2-2 is arranged on the second pipeline; the flue gas sampling device 8 comprises a gas sampling assembly arranged on the first pipeline and a liquid sampling assembly arranged on the second pipeline.
The gas sampling assembly comprises a first flowmeter 5-1, a first sampling pump 7-1 and an air bag 6 which are sequentially arranged on a first pipeline; the first flowmeter 5-1 is connected with the first switch valve 2-1 through a pipeline and is used for controlling the specified flue gas flow rate so as to load a certain volume of flue gas in the gas bag 6.
The liquid sampling assembly comprises a gas absorption bottle 3, a second flowmeter 5-2 and a second sampling pump 7-2 which are sequentially arranged on a second pipeline; the gas absorption bottle 3 is connected to the second switch valve 2-2 and used for absorbing a certain volume of flue gas into absorption liquid in the gas absorption bottle 3, and the absorption liquid is used for detection and calculating gas components and content;
the first sampling pump 7-1 and the second sampling pump 7-2 are also provided with a countdown switch 4 for presetting combustion time so as to start the first sampling pump 7-1 and the second sampling pump 7-2 after the combustion time is over. By using the countdown switch 4, the sampling time can be controlled more accurately, avoiding multiple switching operations.
The invention also provides a test method for detecting the smoke toxicity of the high polymer material, which is applied to the test device, wherein the test method comprises the following steps:
the flue gas in the first pipeline is collected by an air bag 6, and is subjected to gas analysis by a colorimetric tube 10, a non-dispersive infrared instrument, a chemiluminescence method or a flue gas analyzer;
the flue gas in the second pipeline is collected by a gas absorption bottle 3, and liquid analysis is carried out by a potentiometric method, a titration method or a liquid phase ion chromatography method.
Specifically, the test method of the invention comprises the following test steps:
and (3) material combustion: presetting combustion time through a countdown switch 4, putting a high polymer material to be tested into a smoke density box 1 for combustion, and switching on power supplies of two sampling pumps after the combustion time is reached so as to start a first sampling pump 7-1, a second sampling pump 7-2, a first switch valve 2-1 and a second switch valve 2-2, so that smoke enters a first pipeline and a second pipeline respectively;
collecting flue gas: after the gas bag 6 collects a certain volume of flue gas, the first switch valve 2-1 and the first sampling pump 7-1 are closed; after the gas absorption bottle 3 collects the flue gas with a certain volume, the second switch valve 2-2 and the second sampling pump 7-2 are closed;
flue gas analysis: taking out the air bag 6 and the gas absorption bottle 3; the gas in the gas bag can be used for analysis by colorimetry, non-dispersive infrared spectroscopy, chemiluminescence and smoke gas analyzer. The gas bag 6 is connected to a gas detector, and the sampling pump connected to the gas detector pumps the flue gas with the volume required by the corresponding analysis method at a certain flow rate for analysis. The solution in the gas absorption bottle 3 is analyzed by a potentiometric method, a titration method or a liquid ion chromatography method.
The invention also provides for selecting the direction of the analysis method according to the gas component to be detected in the following manner:
(1) and (3) qualitative analysis: all gas components were qualitatively analyzed using a colorimetric method. The colorimetric tube is calibrated in advance, simple to operate, direct and rapid in result, convenient to read, free of maintenance and capable of detecting CO and CO2、NOX、SO2And more than 500 gases such as formaldehyde, benzene and the like can be detected by using 8 gases such as HCl, HCN, HF and HBr, but the measurement error of the colorimetric tube can reach +/-10-15% at most. Therefore, the gas collected by the air bag is preferentially subjected to colorimetric qualitative analysis, whether the gas exists can be detected in the fastest time, and subsequent unnecessary quantitative analysis of the gas is reduced.
(2) Quantitative analysis:
quantitative analysis of HCl, HCN, HF and HBr using potentiometric, titration or liquid ion chromatography analysis of anions;
pair of CO and CO using a non-dispersive infrared spectrometer2Carrying out quantitative analysis;
using chemiluminescence method for NOXCarrying out quantitative analysis;
pair of SO using liquid ion chromatography2Quantitative analysis was performed.
Through the resultant force planning of the 8-step inorganic gas analysis method, the utilization rates of different analysis instruments can be balanced, and different detection requirements of customers can be met.
The above-described embodiments are merely some embodiments of the present invention and are not intended to be exhaustive or to limit the scope of the invention to the precise embodiments disclosed, and merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Claims (8)
1. A test device for detecting smoke toxicity generated by high polymer materials is characterized by comprising:
the smoke density box (1) is used for providing a closed space for the combustion of the high polymer material so as to generate smoke for testing smoke density and toxicity;
the smoke sampling device (8) is arranged outside the smoke density box (1) and is communicated with the smoke density box (1) through a pipeline;
and the switching valve is arranged on a pipeline between the smoke density box (1) and the smoke sampling device (8) and is used for controlling the conduction and the cut-off of the pipeline.
2. The device for detecting smoke toxicity of polymeric materials according to claim 1, further comprising a smoke toxicity detection apparatus independently disposed, wherein the smoke toxicity detection apparatus comprises: a cuvette (10) and an analyser (12); the analytical instrument (12) comprises one or more of a non-dispersive infrared instrument, a chemiluminescence azotometer, a potential analyzer, a titrator, a liquid phase ion chromatograph and a flue gas analyzer.
3. The test device for detecting smoke toxicity of high polymer materials according to claim 1, wherein the pipeline comprises a stainless steel pipe (11) and a polytetrafluoroethylene pipe (9), one end of the stainless steel pipe (11) is connected with the polytetrafluoroethylene pipe (9), and the other end of the stainless steel pipe extends into the smoke density box (1); the switch valve and the smoke sampling device (8) are both arranged on the polytetrafluoroethylene tube (9).
4. The device for detecting smoke toxicity generated by high molecular material according to claim 1, wherein the smoke density box (1) is provided with two pipelines from inside to outside in parallel, wherein the two pipelines are respectively a first pipeline and a second pipeline; a first switching valve (2-1) is arranged on the first pipeline; a second switching valve (2-2) is arranged on the second pipeline; the flue gas sampling device (8) comprises a gas sampling assembly arranged on the first pipeline and a liquid sampling assembly arranged on the second pipeline.
5. The testing device for detecting smoke toxicity of high molecular material according to claim 4, wherein the gaseous sampling assembly comprises a first flow meter (5-1), a first sampling pump (7-1) and an air bag (6) which are sequentially arranged on the first pipeline; the first flowmeter (5-1) is connected to the first switch valve (2-1) and is used for controlling the flow rate of the flue gas;
the liquid sampling assembly comprises a gas absorption bottle (3), a second flowmeter (5-2) and a second sampling pump (7-2) which are sequentially arranged on the second pipeline; the gas absorption bottle (3) is connected to the second switch valve (2-2) and is used for absorbing a certain volume of flue gas into absorption liquid in the gas absorption bottle (3) so as to detect and calculate gas components and content;
and a countdown switch (4) is further arranged on the first sampling pump (7-1) and the second sampling pump (7-2) and used for presetting combustion time so as to start the first sampling pump (7-1) and the second sampling pump (7-2) after the combustion time is finished.
6. A test method for detecting smoke toxicity of high molecular materials is applied to the test device of claim 5, and is characterized in that:
the smoke in the first pipeline is collected through the air bag (6), and gas analysis is carried out by a colorimetry, a non-dispersive infrared instrument, a chemiluminescence method or a smoke analyzer;
the flue gas in the second pipeline is collected through the gas absorption bottle (3), and liquid analysis is carried out by a potentiometry method, a titration method or a liquid ion chromatography method.
7. The test method according to claim 6, characterized in that it comprises the following test steps:
and (3) material combustion: setting combustion time in advance through the countdown switch (4), placing a material to be tested in the smoke density box (1) for combustion, and starting the first sampling pump (7-1), the second sampling pump (7-2), the first switch valve (2-1) and the second switch valve (2-2) after the combustion time is reached so as to enable smoke to enter the first pipeline and the second pipeline respectively;
collecting flue gas: after the gas bag (6) collects a certain volume of flue gas, the first switch valve (2-1) and the first sampling pump (7-1) are closed; after the gas absorption bottle (3) collects a certain volume of smoke, closing the second switch valve (2-2) and the second sampling pump (7-2);
flue gas analysis: taking out the gas bag (6) and the gas absorption bottle (3); connecting the air bag (6) to a gas detector, and extracting a certain volume of flue gas for analysis; the solution in the gas absorption bottle was analyzed with a liquid detector.
8. The test method according to claim 6, characterized in that the analytical method is selected according to the gas composition to be detected in the following manner:
(1) and (3) qualitative analysis: qualitative analysis is carried out on all gas components by using a colorimetric method;
(2) quantitative analysis:
quantitative analysis of HCl, HCN, HF and HBr using potentiometric, titration or liquid ion chromatography analysis of anions;
pair of CO and CO using a non-dispersive infrared spectrometer2Carrying out quantitative analysis;
using chemiluminescence method for NOXCarrying out quantitative analysis;
pair of SO using liquid ion chromatography2Quantitative analysis was performed.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114636783A (en) * | 2022-03-04 | 2022-06-17 | 安标国家矿用产品安全标志中心有限公司 | System and method for monitoring combustion characteristics of high polymer material |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201811951U (en) * | 2010-04-28 | 2011-04-27 | 范维林 | Toxicity test device for fume generated by burning materials |
| CN102636440A (en) * | 2012-04-16 | 2012-08-15 | 华南理工大学 | Building material burning smoke toxicity quantitative evaluation method and system based on N-gas model |
| CN103439364A (en) * | 2013-08-06 | 2013-12-11 | 上海高分子材料研究开发中心 | Testing device for harmful gas generated by combustion of high molecular material, and testing method |
| CN205861623U (en) * | 2016-04-14 | 2017-01-04 | 神华集团有限责任公司 | The analytical equipment of flue gas composition |
| CN106596198A (en) * | 2016-12-20 | 2017-04-26 | 哈尔滨工业大学 | Online SO3 measuring system and method |
| CN207923542U (en) * | 2018-04-06 | 2018-09-28 | 张源源 | A kind of high molecular material combustion experiment harvester |
| CN109000998A (en) * | 2018-09-04 | 2018-12-14 | 株洲时代新材料科技股份有限公司 | A kind of material at high temperature decomposes poison gas collection device and method |
| CN109781924A (en) * | 2019-03-04 | 2019-05-21 | 中国民用航空飞行学院 | A kind of high molecular material combustion product gases test device for simulating hypobaric hypoxia environment |
| CN109855921A (en) * | 2018-11-22 | 2019-06-07 | 江苏大学 | A kind of intellegent sampling device and the method for sampling measuring fuel burning different zones intermediate product |
| CN110044666A (en) * | 2019-05-28 | 2019-07-23 | 中国华能集团清洁能源技术研究院有限公司 | A kind of high-temperature high dust flue gas sampling system and method |
| CN110208048A (en) * | 2019-05-31 | 2019-09-06 | 浙江大学 | The system and method that coal-fired flue-gas Some Organic Pollutants binary channels samples simultaneously |
| CN209820886U (en) * | 2019-05-06 | 2019-12-20 | 江苏欧廷高分子材料有限公司 | Sampling device for harmful gas generated by burning high polymer material |
| CN209945811U (en) * | 2019-03-22 | 2020-01-14 | 西华大学 | Sampling device for harmful gas generated by burning high polymer material |
-
2020
- 2020-04-16 CN CN202010300133.6A patent/CN111323415A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201811951U (en) * | 2010-04-28 | 2011-04-27 | 范维林 | Toxicity test device for fume generated by burning materials |
| CN102636440A (en) * | 2012-04-16 | 2012-08-15 | 华南理工大学 | Building material burning smoke toxicity quantitative evaluation method and system based on N-gas model |
| CN103439364A (en) * | 2013-08-06 | 2013-12-11 | 上海高分子材料研究开发中心 | Testing device for harmful gas generated by combustion of high molecular material, and testing method |
| CN205861623U (en) * | 2016-04-14 | 2017-01-04 | 神华集团有限责任公司 | The analytical equipment of flue gas composition |
| CN106596198A (en) * | 2016-12-20 | 2017-04-26 | 哈尔滨工业大学 | Online SO3 measuring system and method |
| CN207923542U (en) * | 2018-04-06 | 2018-09-28 | 张源源 | A kind of high molecular material combustion experiment harvester |
| CN109000998A (en) * | 2018-09-04 | 2018-12-14 | 株洲时代新材料科技股份有限公司 | A kind of material at high temperature decomposes poison gas collection device and method |
| CN109855921A (en) * | 2018-11-22 | 2019-06-07 | 江苏大学 | A kind of intellegent sampling device and the method for sampling measuring fuel burning different zones intermediate product |
| CN109781924A (en) * | 2019-03-04 | 2019-05-21 | 中国民用航空飞行学院 | A kind of high molecular material combustion product gases test device for simulating hypobaric hypoxia environment |
| CN209945811U (en) * | 2019-03-22 | 2020-01-14 | 西华大学 | Sampling device for harmful gas generated by burning high polymer material |
| CN209820886U (en) * | 2019-05-06 | 2019-12-20 | 江苏欧廷高分子材料有限公司 | Sampling device for harmful gas generated by burning high polymer material |
| CN110044666A (en) * | 2019-05-28 | 2019-07-23 | 中国华能集团清洁能源技术研究院有限公司 | A kind of high-temperature high dust flue gas sampling system and method |
| CN110208048A (en) * | 2019-05-31 | 2019-09-06 | 浙江大学 | The system and method that coal-fired flue-gas Some Organic Pollutants binary channels samples simultaneously |
Non-Patent Citations (1)
| Title |
|---|
| 郭惠敏: "生态纺织技术在民机客舱内饰中的应用" * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114636783A (en) * | 2022-03-04 | 2022-06-17 | 安标国家矿用产品安全标志中心有限公司 | System and method for monitoring combustion characteristics of high polymer material |
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Application publication date: 20200623 |