CN113791171A - Flame retardant material flame retardant property detection device - Google Patents
Flame retardant material flame retardant property detection device Download PDFInfo
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- CN113791171A CN113791171A CN202111202141.8A CN202111202141A CN113791171A CN 113791171 A CN113791171 A CN 113791171A CN 202111202141 A CN202111202141 A CN 202111202141A CN 113791171 A CN113791171 A CN 113791171A
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- 238000001514 detection method Methods 0.000 title claims abstract description 137
- 239000003063 flame retardant Substances 0.000 title claims abstract description 108
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 104
- 239000000463 material Substances 0.000 title claims abstract description 71
- 239000007789 gas Substances 0.000 claims abstract description 98
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 52
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 52
- 239000001301 oxygen Substances 0.000 claims abstract description 52
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 44
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000002156 mixing Methods 0.000 claims abstract description 19
- 229910001961 silver nitrate Inorganic materials 0.000 claims abstract description 12
- 238000010892 electric spark Methods 0.000 claims abstract description 7
- 238000012360 testing method Methods 0.000 claims abstract description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 19
- 238000000746 purification Methods 0.000 claims description 13
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 10
- 229910021389 graphene Inorganic materials 0.000 claims description 7
- 238000004378 air conditioning Methods 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 3
- 238000004458 analytical method Methods 0.000 claims description 3
- 238000004868 gas analysis Methods 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 abstract description 19
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 17
- 238000000034 method Methods 0.000 abstract description 3
- 230000009977 dual effect Effects 0.000 abstract description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 6
- 230000015556 catabolic process Effects 0.000 description 5
- 238000006731 degradation reaction Methods 0.000 description 5
- 230000006378 damage Effects 0.000 description 4
- 230000009970 fire resistant effect Effects 0.000 description 4
- 229910052736 halogen Inorganic materials 0.000 description 3
- 150000002367 halogens Chemical class 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 2
- 229910052794 bromium Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005979 thermal decomposition reaction Methods 0.000 description 2
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012796 inorganic flame retardant Substances 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002341 toxic gas 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
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Combustion & Propulsion (AREA)
- Molecular Biology (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The invention discloses a flame retardant property detection device for a flame retardant material, which comprises a detection box, a controller and a clamping mechanism arranged in the detection box, wherein the left side of the detection box is connected with an oxygen index detection mechanism, the bottom of the detection box is connected with a detection pool through a detection pipe, a silver nitrate solution is stored in the detection pool, the oxygen index detection mechanism comprises a nitrogen input pipe and an oxygen input pipe which are connected in parallel, and a mixing pipe, a gas mixing chamber and a connecting pipe which are connected in series, the gas outlets of the nitrogen input pipe and the oxygen input pipe are both connected with the mixing pipe, the right end of the connecting pipe extends into the detection box and is connected with a gas distribution device, an electric spark igniter is arranged on the gas distribution device, and a nitrogen analyzer and an oxygen analyzer are arranged in the gas mixing chamber. The method can test the oxygen index of the flame-retardant material and can also test whether the flame-retardant material generates the non-combustible gas or not during combustion, and the accuracy of the flame-retardant performance detection of the flame-retardant material and the stability of the result are ensured through the dual detection standards of the oxygen index and the non-combustible gas.
Description
Technical Field
The invention relates to the technical field of flame retardant material detection equipment, in particular to a flame retardant performance detection device for a flame retardant material.
Background
Flame retardant materials are materials that inhibit or retard combustion without being flammable by themselves, mainly organic and inorganic, halogen and non-halogen. Organic flame retardants are represented by bromine, nitrogen, red phosphorus and compounds, and inorganic flame retardants are mainly flame retardant systems such as antimony trioxide, magnesium hydroxide, aluminum hydroxide and silicon.
In the preparation and application processes of the flame retardant material, the detection of the flame retardant property of the flame retardant material is an indispensable link. At present, a detection device for a flame retardant material is simple in structure and single in function, the device for detecting the flame retardant property of the flame retardant material cannot meet the detection requirement required in a flame retardant material evaluation system, and the flame retardant property is difficult to quantitatively evaluate.
In order to solve the above problems, the patent application No. CN202110224160.4 discloses a performance detection device and a detection method for a polymer fire-resistant and flame-retardant material, where the performance detection device includes a fire-resistant performance detection device and a flame-retardant performance detection device, and further includes a main control device connected to the fire-resistant performance detection device and the flame-retardant performance detection device respectively, and the main control device is used to control the flame temperature, the flame length, the distance from the flame to the sample and the flow rate of combustible gas of the fire-resistant performance detection device, and the radiation illuminance of the flame-retardant performance detection device to the sample.
The detection device mainly judges the flame retardant property of the flame retardant material by detecting the ignition time of the flame retardant material, and the judgment index of the unicity cannot accurately judge the flame retardant property of the material; and this detection device does not have gas purification device, because the flame retardant material who contains halogen (like Br, Cl etc.) can produce a large amount of incombustible gas and harmful gas (like HBr, HCl, carbon dioxide etc.) when carrying out the combustion experiment, these gas directly discharge to the air in, not only can cause serious pollution to the environment, and the testing personnel can cause serious injury to testing personnel's health in the existence environment of toxic gas for a long time moreover, has reduced this detection device's range of application. Therefore, how to provide a detection device which has accurate flame retardant performance detection and can effectively control the emission of harmful gases is a problem to be solved urgently.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the device for detecting the flame retardant property of the flame retardant material overcomes the defects of the prior art, is simple in structure, convenient to use, high in detection accuracy and free of harmful gas emission.
The technical scheme adopted by the invention for solving the technical problems is as follows: a flame retardant property detection device of flame retardant material comprises a detection box, a controller and a clamping mechanism arranged in the detection box, the clamping mechanism is used for clamping the flame-retardant material in the detection box, the left side of the detection box is connected with the oxygen index detection mechanism, the bottom of the gas filter is connected with a detection pool through a detection pipe, the top of the detection pipe is provided with a gas filter screen, the detection tank is internally provided with silver nitrate solution, the oxygen index detection mechanism comprises a nitrogen input pipe and an oxygen input pipe which are connected in parallel, and a mixing pipe, a gas mixing chamber and a connecting pipe which are connected in series, the air outlets of the nitrogen input pipe and the oxygen input pipe are both connected with the mixing pipe, the right end of the connecting pipe extends into the detection box and is connected with an air distribution device, the gas distribution device is provided with an electric spark igniter, and the gas mixing chamber is internally provided with a nitrogen analyzer and an oxygen analyzer.
According to the invention, through the arrangement of the oxygen index detection mechanism and the detection tank for storing the silver nitrate solution, the oxygen index of the flame-retardant material can be tested, and whether the flame-retardant material generates non-combustible gas (HBr and HCl) after combustion thermal decomposition can also be tested, the non-combustible gas can disperse oxygen and combustible gas around the flame-retardant material, so that the concentrations of the oxygen and the combustible gas are reduced, and further the further combustion of the material is inhibited, so that the flame-retardant property is achieved. The accuracy of the flame retardant property detection of the flame retardant material and the stability of the result are ensured by the double detection standards of the oxygen index and the non-combustible gas.
Further, install first solenoid valve and second solenoid valve on nitrogen gas input tube and the oxygen input tube respectively, install the third solenoid valve on the connecting pipe, install the fourth solenoid valve on the detecting tube.
Further, the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve and the fourth electromagnetic valve are all connected with a controller.
Furthermore, a hydraulic cylinder is installed at the bottom of the detection box, a piston rod of the hydraulic cylinder is connected with a tray, and the tray is located under the flame-retardant material.
Further, the top of detection case is connected with 1 at least blast pipes, install the fifth solenoid valve on the blast pipe, and it has gas purification device through the pipe connection.
Further, gas purification device includes first barrel, second barrel and third barrel from last to down in proper order, can dismantle the connection between the two adjacent barrels from top to bottom, the bottom of first barrel and second barrel all is equipped with horizontal filter screen, and the middle part of first barrel is equipped with vertical filter screen, vertical filter screen separates first barrel for left barrel and right barrel.
The invention can effectively adsorb harmful gas generated by the combustion and degradation of the flame-retardant material, such as HBr, HCl and CO, by arranging the gas purification device2And CO and the like, so that the pollution of harmful gas to the environment is effectively reduced, the harm of the harmful gas to the bodies of detection personnel is reduced, the safety performance of the detection device is improved, and the application range of the detection device is expanded.
Further, activated carbon is filled in the left cylinder, graphene oxide is filled in the right cylinder, activated alumina is filled in the second cylinder, and nitrogen-alkali resin is filled in the third cylinder.
Further, the exhaust pipe pass through the pipeline with the bottom of third barrel is connected, the right side of right side barrel is connected with the outlet duct.
Further, the right side of detection case is connected with the air conditioning conveyer pipe, install the sixth solenoid valve on the air conditioning conveyer pipe.
Further, the gas distribution device includes the gas distribution pipe and locates the branch pipe on the gas distribution pipe, the gas distribution pipe with the connecting pipe is linked together, the shower nozzle is installed to the right-hand member of branch pipe, the right-hand member of shower nozzle with the electric spark is beaten the ware and is connected.
Further, fixture includes the pneumatic cylinder of symmetry locating the detection case left and right sides, the one end that the pneumatic cylinder is close to flame retardant material is equipped with the telescopic link, be equipped with the tongs on the telescopic link.
The flame retardant property detection device for the flame retardant material has the beneficial effects that:
(1) according to the invention, through the arrangement of the oxygen index detection mechanism and the detection tank for storing the silver nitrate solution, the oxygen index of the flame-retardant material can be tested, and whether the flame-retardant material generates non-combustible gas (HBr and HCl) after combustion thermal decomposition can also be tested, the non-combustible gas can disperse oxygen and combustible gas around the flame-retardant material, so that the concentrations of the oxygen and the combustible gas are reduced, and further the further combustion of the material is inhibited, so that the flame-retardant property is achieved. The accuracy of the flame retardant property detection of the flame retardant material and the stability of the result are ensured by the dual detection standards of the oxygen index and the non-combustible gas;
(2) the invention can effectively adsorb harmful gas generated by the combustion and degradation of the flame-retardant material, such as HBr, HCl and CO, by arranging the gas purification device2And CO and the like, so that the pollution of harmful gas to the environment is effectively reduced, the harm of the harmful gas to the bodies of detection personnel is reduced, the safety performance of the detection device is improved, and the application range of the detection device is expanded.
Drawings
FIG. 1 is a schematic structural diagram of a flame retardant property detection device for a flame retardant material according to the present invention.
Fig. 2 is a schematic structural diagram of a clamping mechanism in the flame retardant property detection device for a flame retardant material of the invention.
The above reference numerals: 1-a detection box, 2-a controller, 3-a clamping mechanism, 4-a cold air conveying pipe, 5-a detection pool, 6-a nitrogen input pipe, 7-an oxygen input pipe, 8-a mixing pipe, 9-a gas mixing chamber, 10-a connecting pipe, 11-a nitrogen analyzer, 12-an oxygen analyzer, 13-a gas distribution pipe, 14-a branch pipe, 15-an electric spark igniter, 16-a first electromagnetic valve, 17-a second electromagnetic valve, 18-a third electromagnetic valve, 19-a fourth electromagnetic valve, 20-a gas exhaust pipe, 21-a fifth electromagnetic valve, 22-a sixth electromagnetic valve, 23-a first cylinder, 24-a second cylinder, 25-a third cylinder, 26-a horizontal filter screen, 27-a vertical filter screen, 28-a left cylinder, 29-right cylinder body, 30-air outlet pipe, 31-pneumatic cylinder, 32-telescopic rod, 33-gripper, 34-air filter screen, 35-hydraulic cylinder, 36-tray, and 37-detection pipe.
Detailed Description
The invention is further illustrated with reference to the following figures and examples, which are not intended to limit the scope of the invention in any way.
Example 1
A flame retardant property detection device of flame retardant material comprises a detection box 1, a controller 2 and a clamping mechanism 3 arranged in the detection box 1, wherein the clamping mechanism 3 is used for clamping the flame retardant material in the detection box 1 and comprises pneumatic cylinders 31 symmetrically arranged on the left side and the right side of the detection box 1, one end of each pneumatic cylinder 31 close to the flame retardant material is provided with a telescopic rod 32, each telescopic rod 32 is provided with a hand grip 33, the left side of the detection box 1 is connected with an oxygen index detection mechanism, the right side of the detection box 1 is connected with a cold air conveying pipe 4 for conveying cold air into the detection box 1 after detection is finished so as to reduce the temperature in the detection box 1, the service life of the detection device is prolonged, the bottom of the detection box 1 is connected with a detection pool 5 through a detection pipe 37, the top of the detection pipe 37 is provided with a gas filter screen 34, and the gas filter screen 34 can prevent combustion products such as powder or particles generated by combustion from falling into the detection pipe 37, cause the measuring tube 37 blocking phenomenon, also can avoid these combustion products to fall into and influence silver nitrate detection effect in the measuring cell, 5 internal storage of measuring cell have silver nitrate solution.
Oxygen index detection mechanism is including nitrogen gas input tube 6 and oxygen input tube 7 and series connection's hybrid tube 8, gas mixing chamber 9 and connecting pipe that connect side by side, the gas outlet of nitrogen gas input tube 6 and oxygen input tube 7 all is connected with hybrid tube 8, install nitrogen gas analysis appearance 1110 and oxygen analysis appearance 12 in the gas mixing chamber 9, nitrogen gas analysis appearance 1110 and oxygen analysis appearance 12 all are connected with controller 2, the right-hand member of connecting pipe stretches into and detects 1 in-connection of case and has the gas distribution device, the gas distribution device includes gas distribution pipe 13 and locates branch pipe 14 on gas distribution pipe 13, gas distribution pipe 13 with the connecting pipe is linked together, the shower nozzle is installed to the right-hand member of branch pipe 14, the right-hand member of shower nozzle is connected with electric spark ignitor 15.
The nitrogen analyzer 1110 in the oxygen index detection mechanism can measure the content of nitrogen in the gas mixing chamber 9, the oxygen analyzer 12 can measure the content of oxygen in the gas mixing chamber 9, the controller 2 controls the input of nitrogen and oxygen and calculates the proportion of nitrogen and oxygen in the gas mixing chamber 9 to measure the relative content of oxygen, and the oxygen with different mixing ratios is conveyed into the detection box 1 to be ignited to measure the oxygen index of the flame retardant material, so as to measure the flame retardant property of the flame retardant material;
the invention also provides a detection tank 5 for storing silver nitrate solution, gas in the detection box 1 is conveyed into the detection tank 5, gas generated by thermal combustion degradation of the flame-retardant material reacts with silver nitrate, so as to detect whether non-combustible gas HBr and HCl with flame-retardant property are generated after the flame-retardant material is thermally degraded.
According to the invention, through the combination of two detection indexes of oxygen index detection and silver nitrate solution detection, errors caused by judging the flame retardant property of the flame retardant material by adopting a single detection index are avoided by adopting double detection indexes, and the accuracy of flame retardant property detection of the flame retardant material and the stability of a result are ensured.
Install first solenoid valve 16 and second solenoid valve 17 on nitrogen gas input tube 6 and the oxygen input tube 7 respectively, install third solenoid valve 18 on the connecting pipe, install fourth solenoid valve 19 on the detection tube 37, install sixth solenoid valve 22 on the air conditioning conveyer pipe 4, first solenoid valve 16, second solenoid valve 17, third solenoid valve 18, fourth solenoid valve 19 and sixth solenoid valve 22 all are connected with controller 2.
The bottom of the detection box 1 is provided with a hydraulic cylinder 35, a piston rod of the hydraulic cylinder 35 is connected with a tray 36, and the tray 36 is positioned under the flame-retardant material. By arranging the hydraulic cylinder 35 and the tray 36, the burnt substances of the flame-retardant material can fall on the tray 36, and the phenomenon that the detection tube 37 is blocked due to the falling of the burnt substances into the detection tube 37 to influence the detection effect of silver nitrate is avoided; and the combustion products dropped on the tray 36 can be moved to the spray head to continue the combustion by the upward extending movement of the hydraulic cylinder 35.
The top of detection case 1 is connected with 1 at least blast pipe 20 (2 in this embodiment), install fifth solenoid valve 21 on the blast pipe 20, and it has gaseous purifier through the pipe connection, and fifth solenoid valve 21 is connected with controller 2, gaseous purifier includes first barrel 23, second barrel 24 and third barrel 25 from last to down in proper order, can dismantle the connection through the flange between the two adjacent barrels from top to bottom, the bottom of first barrel 23 and second barrel 24 all is equipped with horizontal filter screen 26, and the middle part of first barrel 23 is equipped with vertical filter screen 27, vertical filter screen 27 separates first barrel 23 for left barrel 28 and right barrel 29. The exhaust pipe 20 is connected with the bottom of the third cylinder 25 through a pipeline, and the right side of the right cylinder 29 is connected with an exhaust pipe 30. The left cylinder 28 is filled with activated carbon, the right cylinder 29 is filled with graphene oxide, the second cylinder 24 is filled with activated alumina, and the third cylinder 25 is filled with nitrogen-alkali resin.
The invention is provided with a gas purification device, and harmful mixed gas generated by the combustion and degradation of the flame-retardant material contains HBr, HCl and CO2And CO, etc., from the bottom of the third cylinder 25 into the gas purification device due to HBr, HCl, CO2CO and air Density order HBr, HCl > CO2More than air is more than CO, HBr and HCl are gathered at the bottom of the gas purification device, and CO2Gather in the middle of the gas purification device, other gases such as CO gather in the top of the gas purification device, therefore, HBr and HCl are effectively adsorbed by the nitrogen alkaline resin in the third cylinder 25, and CO is adsorbed by the activated alumina in the second cylinder 242Activated carbon and graphene oxide in the first barrel 23 adsorb CO, and because the gas after being adsorbed all need be exported from the right side of right barrel 29, adopt and fill the graphene oxide that adsorption capacity is greater than the activated carbon in the left barrel 28 in the right barrel 29, in order to ensure that the harmful gas in the gas of output is adsorbed completely, make the combustion gas accord with the standard of direct emission, effectively reduced the pollution of harmful gas to the environment, the injury of harmful gas to measurement personnel's health has been reduced, the security performance of this detection device has been improved, the range of application of this detection device has been enlarged.
The invention relates to a working principle and a using method of a flame retardant material flame retardant property detection device, which comprises the following steps: firstly, clamping the flame-retardant material in a detection box 1 by using a clamping mechanism 3, controlling a first electromagnetic valve 16 and a second electromagnetic valve 17 to be opened by a controller 2, monitoring the contents of nitrogen and oxygen in a gas mixing chamber 9 by a nitrogen analyzer 1110 and an oxygen analyzer 12 and transmitting data to the controller 2, calculating the relative content of the oxygen by the controller 2 and controlling a third electromagnetic valve 18 to be opened to transmit the oxygen with different relative contents to a gas distribution device, and spraying and igniting the mixed gas from a spray head to burn the flame-retardant material so as to determine the oxygen index of the combustion of the flame-retardant material;
opening a fourth electromagnetic valve 19 in the combustion process of the flame-retardant material, enabling the gas generated by combustion to enter a detection pool 5 for silver nitrate solution determination, and observing whether light yellow and white precipitates birthday exist or not to determine that incombustible gas HBr and HCl capable of improving the flame-retardant performance are generated by thermal degradation of the flame-retardant material;
after the detection is finished, the first electromagnetic valve 16, the second electromagnetic valve 17, the third electromagnetic valve 18 and the fourth electromagnetic valve 19 are closed, the sixth electromagnetic valve 22 is opened firstly, cold air is conveyed into the detection box 1 to reduce the temperature in the detection box 1, the sixth electromagnetic valve 22 is closed when the temperature is reduced to the room temperature, then the fifth electromagnetic valve 21 is opened, the gas in the detection box 1 enters the gas purification device through the exhaust pipe 20, harmful gas sequentially passes through the nitrogen alkaline resin in the third cylinder 25 to effectively adsorb HBr and HCl, and the activated alumina in the second cylinder 24 adsorbs CO2The activated carbon and graphene oxide in the first cylinder 23 adsorb CO, and since the adsorbed gas needs to be output from the right side of the right cylinder 29, the graphene oxide with the adsorption capacity greater than that of the activated carbon in the left cylinder 28 is filled in the right cylinder 29, so as to ensure that the harmful gas in the output gas is completely adsorbed, and the discharged gas meets the standard of direct discharge.
It will be further understood that the terms "first," "second," "third," "fourth," and the like, may be used herein to describe various elements, but these elements should not be limited by these terms. These terms are only used to distinguish one element from another.
As used herein, the terms "upper," "lower," "left," "right," and the like are used for convenience of description based on the orientation as shown in the figures of the drawings, which may vary from one actual device to another depending on the manner in which the device is arranged.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a fire-retardant material fire behaviour detection device, includes detection case, controller and locates the fixture in the detection case, fixture is used for with fire-retardant material centre gripping in the detection case, its characterized in that: the left side of detection case is connected with oxygen index detection mechanism, and has the detection pond through the test tube connection in its bottom, the top of test tube is equipped with gas filter, silver nitrate solution has been put in the detection pond, oxygen index detection mechanism is including nitrogen gas input tube and the oxygen input tube of parallel connection and series connection's hybrid tube, gas mixing chamber and connecting pipe, the gas outlet of nitrogen gas input tube and oxygen input tube all is connected with the hybrid tube, the right-hand member of connecting pipe stretches into the detection incasement and is connected with the gas distribution device, install the electric spark on the gas distribution device and fire the ware, install nitrogen gas analysis appearance and oxygen analysis appearance in the gas mixing chamber.
2. The flame retardant material flame retardant property detection device of claim 1, characterized in that: install first solenoid valve and second solenoid valve on nitrogen gas input tube and the oxygen input tube respectively, install the third solenoid valve on the connecting pipe, install the fourth solenoid valve on the detection tube, first solenoid valve, second solenoid valve, third solenoid valve and fourth solenoid valve all are connected with the controller.
3. The flame retardant material flame retardant property detection device of claim 1, characterized in that: the hydraulic cylinder is installed to the detection case bottom, the piston rod of hydraulic cylinder is connected with the tray, the tray is located fire-retardant material under.
4. The flame retardant material flame retardant property detection device of claim 1, characterized in that: the top of detection case is connected with 1 at least blast pipes, install the fifth solenoid valve on the blast pipe, and it has gas purification device through the pipe connection.
5. The flame retardant material flame retardant property detection device of claim 4, characterized in that: the gas purification device comprises a first barrel, a second barrel and a third barrel from top to bottom in sequence, the connection can be disassembled between the two adjacent barrels, horizontal filter screens are arranged at the bottoms of the first barrel and the second barrel, a vertical filter screen is arranged in the middle of the first barrel, and the first barrel is separated into a left barrel and a right barrel by the vertical filter screen.
6. The flame retardant material flame retardant property detection device of claim 5, characterized in that: the left barrel is filled with activated carbon, the right barrel is filled with graphene oxide, the second barrel is filled with activated alumina, and the third barrel is filled with nitrogen-alkali resin.
7. The flame retardant material flame retardant property detection device of claim 5, characterized in that: the exhaust pipe is connected with the bottom of the third cylinder through a pipeline, and the right side of the right cylinder is connected with an air outlet pipe.
8. The apparatus for detecting flame retardant property of flame retardant material according to any one of claims 1 to 7, wherein: the right side of detection case is connected with the air conditioning conveyer pipe, install the sixth solenoid valve on the air conditioning conveyer pipe.
9. The apparatus for detecting flame retardant property of flame retardant material according to any one of claims 1 to 7, wherein: the gas distribution device comprises a gas distribution pipe and branch pipes arranged on the gas distribution pipe, the gas distribution pipe is communicated with the connecting pipe, the right end of the branch pipe is provided with a spray head, and the right end of the spray head is connected with the electric spark igniter.
10. The apparatus for detecting flame retardant property of flame retardant material according to any one of claims 1 to 7, wherein: the clamping mechanism comprises pneumatic cylinders symmetrically arranged on the left side and the right side of the detection box, a telescopic rod is arranged at one end, close to the flame-retardant material, of each pneumatic cylinder, and a hand grip is arranged on each telescopic rod.
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