CN103969083A - Fast nondestructive detection cover for formaldehyde emission as well as nondestructive detection method - Google Patents
Fast nondestructive detection cover for formaldehyde emission as well as nondestructive detection method Download PDFInfo
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- CN103969083A CN103969083A CN201410102995.2A CN201410102995A CN103969083A CN 103969083 A CN103969083 A CN 103969083A CN 201410102995 A CN201410102995 A CN 201410102995A CN 103969083 A CN103969083 A CN 103969083A
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- formaldehyde
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- methanal
- sampling
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Abstract
The invention relates to a fast nondestructive detection cover for formaldehyde emission as well as a nondestructive detection method. The fast nondestructive detection cover for formaldehyde emissioncomprises a cover body, a cover port and a sampling detection port, wherein sealing gaskets are mounted on the cover port and the sampling detection port respectively, and air in the cover can be in a relatively sealed state during detection. The nondestructive detection method comprises the following steps: (1), the surface of a to-be-detected sample is directly covered with the cover port of the detection cover; (2), a portable direct-reading formaldehyde analyzer is placed directly in the cover or the sampling detection port of the detection cover; (3), the sealing gaskets on the sampling detection port and the cover port are sealed, the initial concentration A0 of formaldehyde in the air in the cover is read directly from the formaldehyde analyzer; (4) after a certain time, the final concentration A1 of formaldehyde inthe air in the cover is read directly from the formaldehyde analyzer; and (5) the difference between A1 and A0, namely, the difference between the final concentration and the initial concentration is calculated, and the difference is the formaldehyde emission of the to-be-detected sample in the certain time. The fast nondestructive detection cover is simple in structure, high in applicability, low in cost and good in measured data repeatability, and the formaldehyde emission of to-be-detected furniture and decoration materials in the practical using environment can be reflected truly and objectively without damaging the detected sample.
Description
Technical field
The present invention relates to furniture and decorating and renovating material burst size of methanal quick nondestructive and detect cover and lossless detection method.
Background technology
At present, in existing national examination criteria GB18584-2001, for detection of furniture, the national standard method of artificial board and other decorating and renovating material burst size of methanal is exsiccator method, its sampling apparatus is the glass exsiccator of 9-11L, the method is that Furniture panel is cut after destruction, get a 150mm × 50mm × 10 sample piece test specimen and put into exsiccator, using the distilled water of certain volume as absorbing agent, close drying device, and the condition that is placed on (20 ± 1) DEG C is after lower 24 hours, review the content of formaldehyde standard in furniture or artificial board by the concentration of formaldehyde of measuring in distilled water as constant.The advantage of the method is that sampling mode is simple, finished product is relatively low, shortcoming is that the test period cycle is long, and measures after overall furniture need to being destroyed, and the sample after detection also cannot be recycled, increase the cost of enterprise, also caused the pollution to environment.
At present both at home and abroad, for fear of the destruction to furniture, generally adopt the detection of climate box method as furniture and decorating and renovating material burst size of methanal, the method is utilized the environments for use such as climate box furniture that is virtually reality like reality, furniture and decorating and renovating material are processed, and shortcoming is the minimum 1m of being in the environmental testing storehouse of climate box method
3, maximum has 30m
3even larger, small-sized environmental testing storehouse also needs furniture or sheet material to carry out destructiveness sampling, and large-scale environmental testing storehouse cost is high, irremovable, detection operating cost is high.As legal detection method environmental testing storehouse method, sense cycle generally more than one week even longer time, cannot meet at all supervision department market take out products, enter factory supervise or general quality inspection and the quality control requirement of manufacturing enterprise to finished product.
Patent CN101526469B " formaldehyde emission from furniture product the cannot-harm-detection device and lossless detection method ", just the distilled water absorption liquid in the exsiccator method of GB is put into the pick-up unit of making of PVC, although can accomplish Non-Destructive Testing, but when device check fee, after the absorption that still needs 8-12 hour, detect burst size of methanal by chemical colorimetry again, do not reach the requirement that quick nondestructive detects at all, owing to not noting removing formaldehyde pollution possible in background air environment in its testing process, the reliability that detects data is also doubtful simultaneously.Patent CN202494590U " furniture and ornament materials environmental-protecting performance Non-Destructive Testing sampling apparatus " enters extraneous air after airduct by blower fan, heater via is first heated to after certain temperature, remove the volatilization such as formaldehyde and TVOC organic matter through air strainer, arrive downwards after sample surfaces, in the cabin of sealing relatively, flow along sample surfaces, the volatile organic matter distributing with sample surfaces mixes, last mixed gas is transfused to correlation analysis instrument and detects, although by the temperature of test samples surface air that added hot-air control, but the temperature of test samples is difficult to control in the short time and reaches testing requirement, the tired lock of practical operation, and it is a harmless sampling apparatus, be difficult to reach burst size of methanal quick, the requirement of Non-Destructive Testing.
In furniture or the sale of artificial board class decorating and renovating material or use procedure, be difficult to by existing detection method or device at present, can allow intuitively businessman or consumer can recognize in time the burst size of methanal of product.General businessman also can only provide the papery examining report of bulk article, and cannot be at the scene of selling, and informs the burst size of methanal of its product of selling of consumer by fast non-destructive detection method.If consumer queries decorating and renovating material burst size of methanal such as purchased furniture in the use procedure of product, not only need that furniture etc. is carried out to destructiveness could detect, and sense cycle is long.Along with scientific and technical progress, to the trend that the decorating and renovating materials such as furniture carry out fast, Non-Destructive Testing must become technical research development, and be the problem of being obliged to go in the face of solving.
Summary of the invention
In order to solve in above-mentioned technical background, the decorating and renovating material burst size of methanal such as furniture are difficult to reach harmless, a difficult problem for fast detecting, the object of the present invention is to provide furniture and the decorating and renovating material formaldehyde amount of being released into quick nondestructive to detect cover, it is simple in structure, cost is low, portably use conveniently, applicability is strong, can be used for various furniture, the fast detecting of artificial board and decorating and renovating material burst size of methanal, without damaging test sample, and the actual use of the decorating and renovating material such as the simulated furniture situation of mating formation, comprise environmental baseline, without tested Furniture panel etc. is carried out to stripping and slicing destruction, also without moving furniture product, and directly on-the-spot in the actual use of the decorating and renovating materials such as furniture, only need can obtain for 5-10 minute the data of detected object objectionable impurities burst size of methanal.
The present invention achieves the goal by the following technical programs.Burst size of methanal quick nondestructive detection cover is made up of cover body, cover mouth and sampling detection mouthful, and it is characterized in that has sealing gasket and sampling detection mouth to have sealing gasket at cover mouthful.While carrying out the detection of burst size of methanal quick nondestructive, only burst size of methanal quick nondestructive need be detected cover directly cover be buckled in and need the sample Furniture panel detecting or wait and examine reinforced composite floorboard surface, by the sealing gasket of cover mouth, reach good sealing effectiveness with sample to be checked, utilize portable direct-reading type formaldehyde quick analytic instrument simultaneously, connect sampling and detect mouthful, only need several minutes can direct-detection to go out the burst size of methanal of sample to be checked.All have sealing gasket because covering mouth and sampling detection mouth, therefore covering interior air can well seal, and the formaldehyde that covers the surface release of interior test sample just can evenly spread in air in covering.In the time of result of calculation, only need will detect the concentration of formaldehyde initial value recording in data deduction background surrounding air, be the burst size of methanal of testing sample.
Use burst size of methanal quick nondestructive detection cover PARA FORMALDEHYDE PRILLS(91,95) carries out fast, lossless detection method, comprises the following steps:
(1) on furniture or ornament materials, determine detection position, burst size of methanal quick nondestructive is detected to the direct cover of cover and be buckled on above-mentioned detection position, and regulate sealing gasket to guarantee that cover mouthful seals with detected sample face;
(2) portable direct-reading type formaldehyde analyser is placed in cover body, detects the sealing gasket sealing sampling detection mouthful of mouth simultaneously by sampling, directly read concentration of formaldehyde on the interior portable direct-reading type formaldehyde analyser of cover body, this is the interior air initial concentration of formaldehyde A of cover
0.
(3) after certain hour, read concentration of formaldehyde on the interior portable direct-reading type formaldehyde analyser of cover body, this is the interior last concentration of formaldehyde A eventually of cover body in certain hour
1;
(4) by A
1-A
0difference be sample burst size of methanal to be checked in certain hour.
As preferably, in step (2), the sampling head of portable direct-reading type formaldehyde analyser is directly detected to mouth by sampling to be placed in cover body, and the sealing gasket sealing sampling detecting mouthful by sampling detects mouthful, read concentration of formaldehyde on portable direct-reading type formaldehyde analyser, this is initial concentration of formaldehyde A in cover
0; After certain hour, then read concentration of formaldehyde on portable direct-reading type formaldehyde analyser, this is formaldehyde end level A1 in certain hour inner cover; By A
1-A
0difference be sample burst size of methanal to be checked in the unit interval.
The ultimate principle that burst size of methanal quick nondestructive of the present invention detects cover and its test of lossless detection method is, detect cover by burst size of methanal quick nondestructive, directly cover is put on furniture to be checked or other decorating and renovating material surface, detect the sealing gasket of mouth by cover mouth and sampling, form the air ambient of a sealing, formaldehyde in sample to be checked is by passive diffusion way, being diffused into burst size of methanal quick nondestructive detects in the interior air of cover, by portable direct-reading type formaldehyde analyser, direct-detection reads burst size of methanal quick nondestructive and detects initial concentration of formaldehyde A in cover
0and end last concentration of formaldehyde A after certain hour
1, only need calculate A
1-A
0difference, be the burst size of methanal of detected sample within the unit interval.
Burst size of methanal quick nondestructive of the present invention detects cover, in actual testing process, form an airtight little space, the inside and outside air of isolated cover body exchanges, and can be used for testing under the normal environment for use condition of furniture or other decorating and renovating material, has simple in structure, easy to carry, feature easy and simple to handle, with low cost, usable range is wide.
According to lossless detection method of the present invention, the destructiveness of furniture and other decorating and renovating material burst size of methanal is detected and becomes Non-Destructive Testing, without test sample being destroyed to sampling, and the environmental baseline of the normal use of the decorating and renovating materials such as direct modeling furniture detects, testing result is reproducible, simple to operation, the more important thing is that detection time is short, only need can obtain for several minutes the burst size of methanal of the detected materials such as furniture, reach the quick of furniture and other decorating and renovating material burst size of methanal completely, Requirements of Nondestructive Testing, both be applicable to the product quality control testing requirement of producer's quality testing department, also choice for use when applicable manufacturer carries out product promotion, scene provides single sell goods burst size of methanal data intuitively to consumer, instead of can only provide the quality inspection of bulk article to report to consumer as in the past, also can provide the quick of the burst size of methanal such as furniture and artificial board for product quality mechanism, screening technique easily, save time.Small investment of the present invention, easy to operate, Data duplication is good, and without destroying sample, detection time is short, will play certain positive role to the development of China's furniture and other decorating and renovating material industry.
Brief description of the drawings
Fig. 1 is the structural representation of detection enhancement of the present invention floor sample burst size of methanal.
Fig. 2 is the structural representation that the present invention detects furniture cupboard sample burst size of methanal.
Embodiment
Under the present invention is described further by reference to the accompanying drawings.
Embodiment mono-:
Accompanying drawing 1 covers for burst size of methanal quick nondestructive of the present invention detects, be made up of cover mouthful (2), cover body (1) and sampling detection mouthful (3), cover mouth is provided with sealing gasket (4) and sampling detection mouth is provided with sealing gasket (5).Under cover mouthful sealing gasket, be consolidated floor to be detected (7).
Use above-mentioned burst size of methanal quick nondestructive to detect the method for cover, comprise the steps:
(1) directly cover in sample consolidated floor surface to be detected by detecting cover cover mouth;
(2), by portable direct-reading type formaldehyde analyser (6), be directly placed in sampling and detect mouthful (3);
(3) seal sampling and detect the sealing gasket (5) of mouth and the sealing gasket (4) of cover mouth, from formaldehyde analyser, directly read air initial concentration of formaldehyde A in cover
0;
(4) after certain hour, the present embodiment is selected 5 minutes, again air formaldehyde end level A in formaldehyde analyser reads cover
1;
(5) calculate A
1-A
0be the poor of end level and initial concentration, this is 5 minutes burst size of methanal of consolidated floor sample to be checked.
Embodiment bis-:
Accompanying drawing 2 covers for burst size of methanal quick nondestructive of the present invention detects, by being made up of cover mouthful (2), cover body (1) and sampling detection mouthful (3), cover mouth is provided with sealing gasket (4) and sampling detection mouth is provided with sealing gasket (5).Under cover mouthful sealing gasket, it is furniture cupboard to be checked (8).
Use above-mentioned burst size of methanal quick nondestructive to detect the method for cover, comprise the steps:
(1) directly cover in sample furniture cupboard surface to be detected by detecting cover cover mouth;
(2) by portable direct-reading type formaldehyde analyser (6), be directly placed in cover body;
(3) sealing samples and detects the sealing gasket of mouth and the sealing gasket of cover mouth, directly reads the interior air initial concentration of formaldehyde A of cover from formaldehyde analyser
0;
(4) after certain hour, the present embodiment is selected 10 minutes, again air formaldehyde end level A in formaldehyde analyser reads cover
1;
(5) calculate A
1-A
0be the poor of end level and initial concentration, this is 10 minutes burst size of methanal of furniture cupboard sample to be checked.
These are only preferred embodiment of the present invention, all equalizations of doing according to the present invention change and modify, and all should belong to the scope that patent of the present invention contains.
Claims (2)
1. a burst size of methanal quick nondestructive detects cover, cover body (1), cover mouthful (2) and the sampling made by inert material detect mouthful (3) and form, it is characterized in that, have sealing gasket (4) at cover mouthful (2), sampling detects mouthful (3) sealing gasket (5).
2. burst size of methanal quick nondestructive as claimed in claim 1 detects cover, to decorating and renovating material fast non-destructive detection methods such as furniture, it is characterized in that, comprises the following steps:
(1) directly cover in sample surfaces to be detected by detecting cover cover mouth;
(2), by portable direct-reading type formaldehyde analyser, be directly placed in cover or detect the sampling detection mouthful of covering;
(3) sealing samples and detects the sealing gasket of mouth and the sealing gasket of cover mouth, directly reads the interior air initial concentration of formaldehyde A of cover from formaldehyde analyser
0;
(4) after certain hour, air formaldehyde end level A in portable direct-reading type formaldehyde analyser reads cover again
1;
(5) calculate A
1-A
0be the poor of end level and initial concentration, this is sample burst size of methanal to be checked in certain hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410102995.2A CN103969083A (en) | 2014-03-20 | 2014-03-20 | Fast nondestructive detection cover for formaldehyde emission as well as nondestructive detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410102995.2A CN103969083A (en) | 2014-03-20 | 2014-03-20 | Fast nondestructive detection cover for formaldehyde emission as well as nondestructive detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103969083A true CN103969083A (en) | 2014-08-06 |
Family
ID=51238852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410102995.2A Pending CN103969083A (en) | 2014-03-20 | 2014-03-20 | Fast nondestructive detection cover for formaldehyde emission as well as nondestructive detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103969083A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108828151A (en) * | 2018-06-21 | 2018-11-16 | 张银虎 | Air quality detecting device |
| CN111323545A (en) * | 2020-03-31 | 2020-06-23 | 山东交通学院 | Detection device for detecting concentration of formaldehyde in mixed liquid |
| CN112067751A (en) * | 2020-09-11 | 2020-12-11 | 深圳市建筑科学研究院股份有限公司 | Emission detection device |
-
2014
- 2014-03-20 CN CN201410102995.2A patent/CN103969083A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108828151A (en) * | 2018-06-21 | 2018-11-16 | 张银虎 | Air quality detecting device |
| CN111323545A (en) * | 2020-03-31 | 2020-06-23 | 山东交通学院 | Detection device for detecting concentration of formaldehyde in mixed liquid |
| CN112067751A (en) * | 2020-09-11 | 2020-12-11 | 深圳市建筑科学研究院股份有限公司 | Emission detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140806 |
|
| WD01 | Invention patent application deemed withdrawn after publication |