CN101526469A - Nondestructive testing device of formaldehyde emission from furniture product and nondestructive testing method thereof - Google Patents
Nondestructive testing device of formaldehyde emission from furniture product and nondestructive testing method thereof Download PDFInfo
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- CN101526469A CN101526469A CN200910097386A CN200910097386A CN101526469A CN 101526469 A CN101526469 A CN 101526469A CN 200910097386 A CN200910097386 A CN 200910097386A CN 200910097386 A CN200910097386 A CN 200910097386A CN 101526469 A CN101526469 A CN 101526469A
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Abstract
The invention relates to a nondestructive testing device of formaldehyde emission from furniture product and a nondestructive testing method thereof. The nondestructive testing device comprises an adjustable telescoping bracket, the bracket is externally covered with a PVC film, and seal plates are arranged between two adjacent telescoping bracket feet for compressing the PVC film to form airtight space inside the PVC film. The nondestructive testing method comprising the following steps: (1) the to-be-detected product is arranged in the airtight space formed by the PVC film, the telescoping bracket and the seal plates; (2) an absorption vessel with distilled water is arranged right below the to-be-detected product for 8-12 hours; (3) the absorption vessel is taken out, and acetylacetone spectrophotometry is carried out on the absorption liquid inside the vessel to detect the concentration of formaldehyde. The nondestructive testing device has the advantages of reasonable structure, low manufacture cost and strong adaptability; can be adjusted according to the volume and shape of the furniture product, and can obtain the formaldehyde emission data of furniture product without destroying furniture product; in addition, the nondestructive testing device has good reproducibility of testing results, and can actually reflect the formaldehyde emission condition in practical use.
Description
Technical field
The present invention relates to formaldehyde emission from furniture product proving installation and detection method, relate in particular to formaldehyde emission from furniture product the cannot-harm-detection device and lossless detection method.
Background technology
The method that present domestic furniture burst size of methanal detects only has exsiccator method among the GB 18584-2001 " limits of harmful substances in the indoor decorating material wooden furniture " and the climate box method among the QB1952.2-2004 " software furniture spring mattress pad ".Wherein PARA FORMALDEHYDE PRILLS(91,95) burst size detection method is by the furniture woods proportional sampling in the GB 18584-2001 national standard, and quantity of sampling quantity is 150mm * 50mm * 10 piece, and whole like this furniture just needs to destroy, and the test findings repdocutbility is poor.The QB1952.2-2004 standard has also only been made regulation to free formaldehyde release, and detection is to get 500mm * 800mm sample to be used for test on mattress, and mattress is also destroyed after the test can't use.Waste resource so on the one hand, increase enterprise and detect cost, can not really reach the objectionable impurities burst size index of reflection furniture item, also make consumers in general can accurately not know whether own employed product objectionable impurities burst size is up to standard on the other hand.Abroad, the formaldehyde emission from furniture product lossless detection method generally uses constant temperature and humidity convection current climate box detection method, this method can be carried out simulation climate to furniture integral body and be handled, evaluate its formaldehyde release performance, but this testing apparatus volume is big, the cost height, the operating cost height, and need the test box of multiple volume and multiple air-flow index at the how different furniture of style, the environment of this method of testing simulation also is not suitable for China's indoor environment situation, particularly in the northern area of China, per hour indoor air-changing does not once generally reach, this method of testing need be transported to furniture integral body the appointed place and put into the test box detection simultaneously, consumes the lot of manpower and material resources and the energy, has suddenly in the energy-saving and cost-reducing demand of country.Along with science and technology development, the progress of society, the Non-Destructive Testing of furniture burst size of methanal is a kind of inevitable development trend, also is a difficult problem of being badly in need of solution supporting with furniture consumption.
Summary of the invention
Be difficult to accomplish that in order to overcome sample need not to destroy in the above-mentioned technical background, goal of the invention of the present invention is to provide formaldehyde emission from furniture product the cannot-harm-detection device, it is rational in infrastructure, cost is low, adaptability is strong, can adjust according to the volume and the shape of product, need not to destroy the burst size of methanal data that furniture item can obtain furniture item; The present invention also provides the method that adopts this cannot-harm-detection device that furniture item is carried out Non-Destructive Testing, and its testing result repdocutbility is good, and sense cycle is short, and it is low to detect cost, can truly reflect the problem of burst size of methanal situation under the actual user mode.
The present invention solves the problems of the technologies described above by following technical proposals: formaldehyde emission from furniture product the cannot-harm-detection device, comprise that one can be according to the volume of detected product, the telescope support that shape is adjusted, described support comprises 4 vertically disposed expansion link legs and 4 horizontally disposed expansion link push rods, wherein each root expansion link leg and adjacent two expansion link push rods plug by three-way connection, described support is coated with the PVC film outward, is provided with between described adjacent two extending foots to be used to compress the diaphragm seal that the PVC film makes formation confined space in the PVC film.
Use described formaldehyde emission from furniture product the cannot-harm-detection device that furniture item is carried out lossless detection method, may further comprise the steps:
(1) according to the volume of detected product, the expansion link leg and the expansion link push rod of shape adjustments support, detected product is placed in the confined space that is made of PVC film, support and diaphragm seal, makes each face of detected product be 10mm～15mm corresponding to the stent cover distance.
(2) the absorption container that will fill distilled water be placed on detected product under, allow detected product in confined space, keep 8～12 hours.
(3) take out the absorption container, to absorption liquid employing diacetone Spectrophotometric Determination Method of Formaldehyde concentration wherein.
As preferably, in step (1), the bottom of described confined space is provided with the standard pad that is used for the detected product of bed hedgehopping, and described detected product is placed on the standard pad.
The basic functional principle of test is, furniture item is placed on the standard pad, itself and floor level are kept certain height, around furniture item, build a framework with support according to the size of product, make each face of furniture corresponding to the framework identity distance from being 10～15mm, the absorption container 4 that fills distilled water is put in just transferring of sample, covers support, and make it form a confined space with diaphragm seal 6 sealings with the PVC film.Temperature and ambient temperature in this space are consistent substantially, perhaps can change along with the variation of ambient temperature, and this and our actual furniture operating position are very approaching.Allow the furniture sample in this space, keep 8～12 hours, at this moment between, the furniture sample can discharge certain free formaldehyde, because formaldehyde is soluble in water, therefore the free formaldehyde that discharges is absorbed the water absorption in the container, can reach vapor liquid equilibrium after a period of time under uniform temperature and humidity, takes out to absorb container, to absorption liquid employing diacetone Spectrophotometric Determination Method of Formaldehyde concentration wherein, the result expresses the burst size of methanal of sample with mg/L.
Formalin concentration is calculated by following formula, is accurate to 0.1mg/L
C＝F×(AS-A0)
In the formula: C---concentration of formaldehyde, mg/L
F---slope of standard curve
The absorbance of AS---liquid to be measured
The absorbance of A0---distilled water
Adopt the invention of the technical program, its beneficial effect is:
The support of formaldehyde emission from furniture product the cannot-harm-detection device of the present invention has Telescopic, can form a suitable space frame according to varying in size of detected furniture item, the PVC film is used for support is sealed, the isolating inner air and outer air circulation, but not influencing temperature transfer, diaphragm seal makes the space be completed into a confined space.These component weight are light, are easy to transportation after folding.This device easy operating, with low cost, usable range is wide.
According to lossless detection method of the present invention, change formaldehyde emission from furniture product into need not to destroy test by original destructive test, and the burst size of methanal situation under the actual furniture item user mode of simulation China, accomplish that the testing result repdocutbility is good, sense cycle is short, approaching with actual user mode, the detection cost is low, detecting the collection external environment condition requires low, the formaldehyde transfer is consistent with international exsiccator method test with reaction principle in its testing process, provide new detection method for China furniture item quality inspection mechanism simultaneously, also provide small investment for furniture manufacturing enterprise, the burst size of methanal method equipment that cost is low will play positive role to further developing of China's furniture industry.
Description of drawings
Structural representation when Fig. 1 is a detection desk of the present invention.
Structural representation when Fig. 2 is a detection chair of the present invention.
Embodiment
1-2 describes in further detail the present invention below in conjunction with accompanying drawing:
Embodiment 1:
As shown in Figure 1, formaldehyde emission from furniture product the cannot-harm-detection device, comprise that one can be according to the volume of detected product, the telescope support that shape is adjusted, described support comprises 4 vertically disposed expansion link legs 4 and 4 horizontally disposed expansion link push rods 2, wherein each root expansion link leg 4 plugs by three-way connection 3 with adjacent two expansion link push rods 2, described support is coated with PVC film 1 outward, is provided with between described adjacent two extending foots 4 to be used to compress the diaphragm seal 5 that PVC film 1 makes formation confined space in the PVC film.
Use above-mentioned formaldehyde emission from furniture product the cannot-harm-detection device that furniture item is carried out lossless detection method, may further comprise the steps:
(1) according to the volume of detected product desk, the expansion link leg and the expansion link push rod of shape adjustments support, detected product is placed in the confined space that is made of PVC film, support and diaphragm seal, makes each face of detected product be 10mm corresponding to the stent cover distance.The bottom of described confined space is provided with the standard pad that is used for the detected product of bed hedgehopping, and described detected product is placed on the standard pad, described standard bed hedgehopping 10mm.
(2) the absorption container that will fill distilled water be placed on detected product under, allow detected product in confined space, keep 10 hours.
(3) take out the absorption container, to absorption liquid employing diacetone Spectrophotometric Determination Method of Formaldehyde concentration wherein.
Temperature and ambient temperature in the confined space are consistent substantially, perhaps can change along with the variation of ambient temperature, and this and our actual furniture operating position are very approaching.Allow the furniture sample in this space, keep 10 hours, at this moment between, the furniture sample can discharge certain free formaldehyde, because formaldehyde is soluble in water, therefore the free formaldehyde that discharges is absorbed the water absorption in the container, can reach vapor liquid equilibrium after a period of time under uniform temperature and humidity, takes out to absorb container, to absorption liquid employing diacetone Spectrophotometric Determination Method of Formaldehyde concentration wherein, the result expresses the burst size of methanal of sample with mg/L.
Formalin concentration is calculated by following formula, is accurate to 0.1mg/L
C＝F×(AS-A0)
In the formula: C---concentration of formaldehyde, mg/L
F---slope of standard curve
The absorbance of AS---liquid to be measured
The absorbance of A0---distilled water
Certainly, as shown in Figure 2, formaldehyde emission from furniture product the cannot-harm-detection device provided by the invention and lossless detection method also can detect furniture items such as chairs.
Embodiment 2:
As shown in Figure 1, formaldehyde emission from furniture product the cannot-harm-detection device, comprise that one can be according to the volume of detected product, the telescope support that shape is adjusted, described support comprises 4 vertically disposed expansion link legs 4 and 4 horizontally disposed expansion link push rods 2, wherein each root expansion link leg 4 plugs by three-way connection 3 with adjacent two expansion link push rods 2, described support is coated with PVC film 1 outward, is provided with between described adjacent two extending foots 4 to be used to compress the diaphragm seal 5 that PVC film 1 makes formation confined space in the PVC film.
The above only is preferred embodiment of the present invention, and all equalizations of being done according to the present patent application claim change and modify, and all should belong to the covering scope of patent of the present invention.
Claims (3)
1. formaldehyde emission from furniture product the cannot-harm-detection device, it is characterized in that, comprise that one can be according to the volume of detected product, the telescope support that shape is adjusted, described support comprises 4 vertically disposed expansion link legs (4) and 4 horizontally disposed expansion link push rods (2), wherein each root expansion link leg (4) plugs by three-way connection (3) with adjacent two expansion link push rods (2), described support is coated with PVC film (1) outward, is provided with between described adjacent two extending foots (4) to be used to compress the diaphragm seal (5) that PVC film (1) makes formation confined space in the PVC film.
2. use formaldehyde emission from furniture product the cannot-harm-detection device as claimed in claim 1 that furniture item is carried out lossless detection method, it is characterized in that, may further comprise the steps:
(1) according to the volume of detected product, the expansion link leg and the expansion link push rod of shape adjustments support, detected product is placed in the confined space that is made of PVC film, support and diaphragm seal, makes each face of detected product be 10mm～15mm corresponding to the stent cover distance.
(2) the absorption container that will fill distilled water be placed on detected product under, allow detected product in confined space, keep 8～12 hours.
(3) take out the absorption container, to absorption liquid employing diacetone Spectrophotometric Determination Method of Formaldehyde concentration wherein.
3. formaldehyde emission from furniture product lossless detection method as claimed in claim 2 is characterized in that, in step (1), the bottom of described confined space is provided with the standard pad that is used for the detected product of bed hedgehopping, and described detected product is placed on the standard pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100973861A CN101526469B (en) | 2009-04-13 | 2009-04-13 | Nondestructive testing device of formaldehyde emission from furniture product and nondestructive testing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100973861A CN101526469B (en) | 2009-04-13 | 2009-04-13 | Nondestructive testing device of formaldehyde emission from furniture product and nondestructive testing method thereof |
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| Publication Number | Publication Date |
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| CN101526469A true CN101526469A (en) | 2009-09-09 |
| CN101526469B CN101526469B (en) | 2011-07-20 |
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| CN2009100973861A Expired - Fee Related CN101526469B (en) | 2009-04-13 | 2009-04-13 | Nondestructive testing device of formaldehyde emission from furniture product and nondestructive testing method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104749326A (en) * | 2015-04-16 | 2015-07-01 | 曾敏华 | Detection method for release amount of formaldehyde of impregnated paper |
| CN107120496A (en) * | 2017-05-16 | 2017-09-01 | 宁波物联基石信息技术有限公司 | A kind of Novel movable frame for load capacity calculation owner's cabinet |
| CN108226023A (en) * | 2018-03-01 | 2018-06-29 | 中华人民共和国菏泽出入境检验检疫局 | A kind of Multifunction outdoor furniture analoging detecting device |
| CN108414395A (en) * | 2017-12-25 | 2018-08-17 | 广东产品质量监督检验研究院 | Formaldehyde and VOC release amount detecting devices and its detection method in a kind of furniture |
| CN110879207A (en) * | 2019-11-25 | 2020-03-13 | 中国林业科学研究院木材工业研究所 | Detection method for dryer method formaldehyde release amount comparison test |
| CN113899859A (en) * | 2021-09-29 | 2022-01-07 | 宁波市宁乐建筑工程检测有限公司 | Testing box for formaldehyde emission in indoor air and detection method thereof |
-
2009
- 2009-04-13 CN CN2009100973861A patent/CN101526469B/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104749326A (en) * | 2015-04-16 | 2015-07-01 | 曾敏华 | Detection method for release amount of formaldehyde of impregnated paper |
| CN107120496A (en) * | 2017-05-16 | 2017-09-01 | 宁波物联基石信息技术有限公司 | A kind of Novel movable frame for load capacity calculation owner's cabinet |
| CN108414395A (en) * | 2017-12-25 | 2018-08-17 | 广东产品质量监督检验研究院 | Formaldehyde and VOC release amount detecting devices and its detection method in a kind of furniture |
| CN108226023A (en) * | 2018-03-01 | 2018-06-29 | 中华人民共和国菏泽出入境检验检疫局 | A kind of Multifunction outdoor furniture analoging detecting device |
| CN108226023B (en) * | 2018-03-01 | 2023-11-21 | 中华人民共和国菏泽出入境检验检疫局 | Multifunctional outdoor furniture simulation detection device |
| CN110879207A (en) * | 2019-11-25 | 2020-03-13 | 中国林业科学研究院木材工业研究所 | Detection method for dryer method formaldehyde release amount comparison test |
| CN110879207B (en) * | 2019-11-25 | 2020-12-11 | 中国林业科学研究院木材工业研究所 | Detection method for dryer method formaldehyde release amount comparison test |
| CN113899859A (en) * | 2021-09-29 | 2022-01-07 | 宁波市宁乐建筑工程检测有限公司 | Testing box for formaldehyde emission in indoor air and detection method thereof |
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| CN101526469B (en) | 2011-07-20 |
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