CN110261516A - A kind of vehicle glass sealant volatile organic matter sample preparation device and detection method - Google Patents
A kind of vehicle glass sealant volatile organic matter sample preparation device and detection method Download PDFInfo
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- CN110261516A CN110261516A CN201910705865.0A CN201910705865A CN110261516A CN 110261516 A CN110261516 A CN 110261516A CN 201910705865 A CN201910705865 A CN 201910705865A CN 110261516 A CN110261516 A CN 110261516A
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- sampler bag
- sealant
- protective casing
- volatile organic
- organic matter
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/06—Preparation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/26—Conditioning of the fluid carrier; Flow patterns
- G01N30/38—Flow patterns
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Abstract
The invention discloses a kind of vehicle glass sealant volatile organic matter sample preparation device and detection method, sample preparation device includes sampler bag, load sample part and the protective casing with air hole；Sealant specimen is coated on the load sample part, and the load sample part is placed in the protective casing, and the protective casing is placed in the sampler bag.Test method of the present invention is according to auto glass sealer coating technique, with the installation procedure of vehicle glass, the actual mass dosage and car of sealant distribute area and are coated on load sample part, then place one section with sealant coating after arrive vehicle it is offline between the interval time identical time, so as to simulate actual production technique, the realistic application conditions of true reflection glazing compound, remove the interference of this process, the last measurement that volatile organic content is carried out according to examination criteria, can truely and accurately detect glazing compound volatile organic matter.
Description
Technical field
The present invention relates to automobile technical fields, in particular to automobile volatile organic matter detection field, and in particular to automobile-used
Glazing compound volatile organic matter sample preparation device and detection method.
Background technique
Volatile organic matter typically refers to the general designation of organic emanation volatile under room temperature, and GB/T27630-2011 " multiplies
With in-car air quality evaluation guide " according to examination criteria HJ/T400-2007 " interior volatile organic matter and aldehyde ketone substance
Sample detecting method " to benzene homologues in in-vehicle air (benzene,toluene,xylene, ethylbenzene, styrene), aldehydes (formaldehyde, acetaldehyde, third
Olefine aldehydr) eight kinds of volatile organic matters propose specific limit value requirement.
To cope with vehicle volatile organic matter technical requirements, sack method or 1m are mainly utilized at present3Cabin etc. is to assembly zero
Part or single component are tested and analyzed, and the specific detection method is as follows: the component for placing a period of time is (general to require less than 15
It) it is placed in the sack or 1m of designated volume3It in cabin, is then placed in constant temperature cabin, to the volatility distributed after holding specific time
Organic matter is sampled detection and analysis, and confirms corresponding components volatile organic matter limit value requirement according to corresponding method.
But the above method is suitable for the short time and places on the lesser component of volatile organic matter influence, such as interior instrument
Plate, door-plate, column, seat, carpet etc..For vehicle glass sealant, is mainly coated in car assembly shop, include
Glass cement and priming paint two parts, cure cycle about 15 days, wherein priming paint dosage was less, be mainly used for increasing glass cement and glass it
Between cohesive force；The volatile hazardous substances that glazing compound distributes in cure cycle can be by interior seat, ceiling, carpet
It is adsorbed etc. soft interior trim, seriously affects in-car air quality.If being detected according to assembly components, need to be coated to laggard on windshield
Row tests and analyzes, and detection time is different, interior glazing compound volatile organic matter difference clearly, simultaneously because coating
To after windshield, area is distributed much larger than practical corresponding car and distributes area, cannot really reflect applicable cases, and due to
Windshield is heavier, is directly placed into sack or 1m3It is poor that cabin operates practicability, and easily to sack or 1m3Cabin generates the dirts such as bonding
Dye, influences next use, therefore how really and accurately to detect glazing compound volatile organic matter and confirm that particular technique is wanted
Asking is still industry problems.
Summary of the invention
The main object of the present invention is to propose a kind of vehicle glass sealant volatile organic matter sample preparation device and detection side
Method to the scene of interior volatilization volatile organic matter and can be measured, to solve existing with accurate simulation glazing compound
Technology can not really and accurately detect the technical issues of glazing compound volatile organic matter.
To achieve the above object, the present invention proposes a kind of vehicle glass sealant volatile organic matter sample preparation device, including
Sampler bag, load sample part and the protective casing with air hole；Sealant specimen is coated on the load sample part, and the load sample part is set
In in the protective casing, the protective casing is placed in the sampler bag.
Optionally, the sealant specimen coated face of the load sample part is pre-coated with priming paint, the priming paint and sealant sample
The priming paint coated on the component to be sealed of product is identical.
Optionally, the load sample part and the protective casing are all made of metal material and are made.
Optionally, the load sample part is in open box-like in top surface, and the protective casing is in cuboid, and the protecting crust
The bottom surface of body is real face, and three faces are mesh-structured, the institute of porosity of=30% in the top surface and surrounding side of the protective casing
State the remaining one side open design in the surrounding side of protective casing.
Using above-mentioned vehicle glass sealant volatile organic matter sample preparation device, the present invention proposes a kind of vehicle glass sealing
Glue Simple, Practical Determination Method of VOCs, comprising the following steps:
(1) in the installation procedure of vehicle glass, the quality dosage m of sealant, the car of sealant distribute area for confirmation
S, sealant coating after to vehicle it is offline between interval time t；
(2) taking quality is that the sealant specimen of m is coated on load sample part and spreading area is equal to s, when then placing t sections
Between, finally load sample part is placed in the protective casing, then the protective casing is placed in the sampler bag；
(3) after glue sample to be sealed volatilizees in the sampler bag, volatile organic matter is acquired out of described sampler bag；
(4) assay is carried out to volatile organic matter collected out of described sampler bag.
Optionally, in step (2), before the protective casing is placed in the sampler bag, in advance to the sampling
Bag carries out scavenging processing, the specific steps are as follows:
A) sampler bag is sealed, then evacuates the gas in the sampler bag, then be filled with and account for into the sampler bag
The pure nitrogen gas of the sampler bag volume 40~60%；
B) then the sampler bag is extracted out the gas in the sampler bag in placing in 65 DEG C of insulating box 2 hours；
C) repetitive operation is above-mentioned a), b) step is more than once.
Optionally, it in step (2), is placed in by the protective casing in the sampler bag and then to the sampler bag
Carry out secondary scavenging processing, the specific steps are as follows:
A) sampler bag is sealed, be then filled at room temperature into the sampler bag account for the sampler bag volume 25~
35% pure nitrogen gas, then the gas in the sampler bag is extracted out；
B) the above-mentioned a) step of repetitive operation is more than once；
C) pure nitrogen gas for accounting for the sampler bag volume 40~60% is filled in Xiang Suoshu sampler bag.
Optionally, in step (3), the time that sealant specimen is volatilized in the sampler bag is 2 hours, and temperature condition is
65℃。
Optionally, in step (3), volatile organic matter, the acquisition are acquired out of described sampler bag by acquisition device
Device includes sampling storehouse and more than one sampling pump, in use, the sampler bag is placed in the sampling storehouse, each sampling
Pump is placed in outside the sampling storehouse, is connected separately with sampling pipe between each sampling pump and the sampler bag, on the sampling pipe
TENAX trap tube and/or DNPH trap tube are installed.
Optionally, a blank sampler bag is set as a control group.
In technical solution of the present invention, sample preparation device, can substitute vehicle glass and be tested through the invention, test
When, sealant specimen is coated on load sample part, and sealant specimen dosage is identical as sealant usage amount in actual installation process, close
It is identical that sealing sample spreading area and the car of sealant in actual installation process distribute area, before test, waits for a period of time,
The time and sealant coating after to vehicle it is offline between interval time it is identical, actual production technique can be simulated in this way,
The realistic application conditions of true reflection glazing compound, remove the interference of this process, load sample part are then placed in protective casing
It is interior, then protective casing is placed in sampler bag, the measurement of volatile organic matter is carried out, according to testing standard so as to true quasi-
Really detect glazing compound volatile organic matter, and method of preparing sample is simple and fast, device is reusable.
Test method of the present invention is according to auto glass sealer coating technique, when sample preparation, sealant specimen dosage and reality
Sealant usage amount is identical in installation procedure, and sealant specimen spreading area and the car of sealant in actual installation process distribute
Area is identical, then place one section with sealant coating after arrive vehicle it is offline between the interval time identical time, thus
Actual production technique can be simulated, the true realistic application conditions for reflecting glazing compound remove the interference of this process, finally
The measurement that volatile organic content is carried out according to examination criteria, can truely and accurately detect that glazing compound volatility is organic
Object.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is load sample part in the vehicle glass sealant volatile organic matter sample preparation device of an embodiment provided by the invention
Structural schematic diagram；
Fig. 2 is protecting crust in the vehicle glass sealant volatile organic matter sample preparation device of an embodiment provided by the invention
The structural schematic diagram of body；
Fig. 3 adopts for what the vehicle glass sealant Simple, Practical Determination Method of VOCs of an embodiment provided by the invention used
The using state structure diagram of acquisition means.
Drawing reference numeral explanation:
| Label | Title | Label | Title |
| 1 | Load sample part | 6 | Sampling pipe |
| 2 | Protective casing | 7 | TENAX trap tube |
| 3 | Sampler bag | 8 | DNPH trap tube |
| 4 | Sample storehouse | 9 | Valve |
| 5 | Sampling pump |
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.?
In the case where not conflicting, the features in the embodiments and the embodiments of the present application be can be combined with each other.Based on the reality in the present invention
Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts all belongs to
In the scope of protection of the invention.
It is to be appreciated that if relating to directionality instruction (such as up, down, left, right, before and after ...) in the embodiment of the present invention,
Then directionality instruction be only used for explain under a certain particular pose (as shown in the picture) between each component relative positional relationship,
Motion conditions etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.
In addition, being somebody's turn to do " first ", " second " etc. if relating to the description of " first ", " second " etc. in the embodiment of the present invention
Description be used for description purposes only, be not understood to indicate or imply its relative importance or implicitly indicate indicated skill
The quantity of art feature." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one spy
Sign.In addition, the meaning of the "and/or" occurred in full text, including three schemes arranged side by side, by taking " A and/or B " as an example, including the side A
The scheme that case or B scheme or A and B meet simultaneously.In addition, the technical solution between each embodiment can be combined with each other, but
To be based on can be realized by those of ordinary skill in the art, when the combination of technical solution occur it is conflicting or can not
Will be understood that the combination of this technical solution is not present when realization, also not the present invention claims protection scope within.
Vehicle glass sealant volatile organic matter sample preparation device of the present invention, including sampler bag, load sample part 1 and have ventilative
The protective casing 2 in hole, load sample part 1 and protective casing 2 are referring to Figure 1 with 2；Sealant specimen is coated on the load sample part 1, institute
It states load sample part 1 to be placed in the protective casing 2, the protective casing 2 is placed in the sampler bag.
In use, sealant specimen is coated on load sample part, sealant in sealant specimen dosage and actual installation process
Usage amount is identical, and it is identical that sealant specimen spreading area and the car of sealant in actual installation process distribute area, before test,
Wait for a period of time, the time and sealant coating after to vehicle it is offline between interval time it is identical, so as to simulate
Then load sample part is placed in protective casing, then protective casing is placed in sampler bag by actual production technique, referring to Fig. 3, finally
The measurement of volatile organic content is carried out according to examination criteria, protective casing plays the role of completely cutting off load sample part and sampler bag,
Prevent the sealant specimen on load sample part from polluting and destroying sampler bag, such sampler bag may be reused repeatedly.
Sample preparation device through the invention can substitute practical vehicle glass and be tested, and can real simulation actual production
Technique, the true realistic application conditions for reflecting glazing compound, to truely and accurately detect that glazing compound volatility has
Machine object.
In one embodiment, the sealant specimen coated face of the load sample part 1 is pre-coated with priming paint, the priming paint with it is close
The priming paint coated on the component to be sealed of sealing sample is identical.In concrete practice, the car body metal plate that is sealed against each other with vehicle glass
It is to be coated with priming paint on part, it can be common that the priming paint of the components such as base polyurethane prepolymer for use as, butyl acetate, therefore in the close of load sample part
Sealing sample coated face coats identical priming paint in advance, can true simulation actual production technique, improve detection accuracy.
In one embodiment, the load sample part 1 and the protective casing 2 are all made of metal material and are made.Metal material is not
Volatile organic matter can be generated, to will not interfere.
Preferably, the load sample part 1 is made of aluminium foil, and sample preparation is simple and fast.The protective casing 2 uses stainless steel
At protection effect is reliable, and material is easy to get, and is easy production.
In one embodiment, referring to Fig. 1, the load sample part 1 is in the box-like of top surface opening.It designs in this way, box-like load
The face of inside five of exemplar can be with applying paste sample, and so as to reduce the volume requirement of load sample part, practicability is more preferable.
In one embodiment, referring to Fig. 2, the protective casing 2 is in cuboid, and the bottom surface of the protective casing is
Real face, three faces are mesh-structured, the protective casing of porosity of=30% in the top surface and surrounding side of the protective casing
Surrounding side in remaining one side open design.It designs, is accessed from an open face convenient-loading exemplar in this way, it is mesh-structured
Trihedral can make volatile organic matter flow out and be collected at air hole in top surface and surrounding side, and can be effectively isolated
Load sample part and sampler bag.
In the present invention, the sampler bag that sampler bag, that is, existing detection technique uses, usually polytetrafluoroethylene (PTFE) material are not spy
It does not limit.
Using above-mentioned vehicle glass sealant volatile organic matter sample preparation device, the present invention proposes a kind of vehicle glass sealing
Glue Simple, Practical Determination Method of VOCs, comprising the following steps:
(1) in the installation procedure of vehicle glass, the quality dosage m of sealant, the car of sealant distribute area for confirmation
(namely sealant coating after towards vehicle interior one side area) s, sealant coating after to vehicle it is offline between
Interval time t；
(2) taking quality is that the sealant specimen of m is coated on load sample part and spreading area is equal to s, then places t times
To simulate vehicle working condition, finally load sample part is placed in the protective casing, then the protective casing is placed in described adopt
In sample bag；
(3) after glue sample to be sealed volatilizees in the sampler bag (volatilization the time according to volatilization as defined in examination criteria at
It is determining to manage the time), volatile organic matter is acquired out of described sampler bag；
(4) assay is carried out to volatile organic matter collected out of described sampler bag.
In specific implementation, thermal desorption gas chromatograph and high performance liquid chromatograph can be used respectively to benzene, toluene, diformazan
Benzene, ethylbenzene, styrene and formaldehyde, acetaldehyde, methacrylaldehyde are analyzed, the specific volatile quantity of confirmatory sample.It is of course also possible to use its
Its method is not particularly limited as long as assay accurately can be carried out to volatile organic matter.
Detection method is based on sample preparation device of the invention, with actual mass of the sealant when installing vehicle glass
Dosage and car distribute area and are coated on load sample part, then place one section with sealant coating after arrive vehicle it is offline between
Then load sample part is placed in protective casing by the interval time identical time so as to simulate actual production technique, then will prevent
Protective case body is placed in sampler bag, the last measurement that volatile organic content is carried out according to examination criteria, can be truely and accurately
Detect glazing compound volatile organic matter.
Then, it can be contributed according to glazing compound emission levels and to vehicle in-car air quality, in conjunction with GB/T
The requirement of 27630-2011 " Air Quality Evaluation guide in passenger car " volatile organic matter limit value is formulated vehicle glass sealant and is waved
Hair property organic matter technical requirements.
In one embodiment, the sample preparation temperature of step (2) is 20 DEG C~30 DEG C, can true simulation actual production work
Skill improves detection accuracy.
In one embodiment, in step (2), before the protective casing is placed in the sampler bag, in advance to institute
It states sampler bag and carries out scavenging processing, the specific steps are as follows:
A) sampler bag is sealed, then evacuates the gas in the sampler bag, then be filled with and account for into the sampler bag
The pure nitrogen gas of the sampler bag volume 40~60%；
B) then the sampler bag is extracted out the gas in the sampler bag in placing in 65 DEG C of insulating box 2 hours；
C) repetitive operation is above-mentioned a), b) step is more than once.
The present invention carries out scavenging processing, the interfering substance in sampler bag can be discharged as much as possible, to improve detection
Accuracy.
In one embodiment, it in step (2), is placed in the sampler bag and then to described by the protective casing
Sampler bag carries out secondary scavenging processing, the specific steps are as follows:
A) sampler bag is sealed, be then filled at room temperature into the sampler bag account for the sampler bag volume 25~
35% pure nitrogen gas, then the gas in the sampler bag is extracted out；
B) the above-mentioned a) step of repetitive operation is more than once；
C) pure nitrogen gas for accounting for the sampler bag volume 40~60% is filled in Xiang Suoshu sampler bag.
The present invention carries out secondary scavenging processing, and the interference entered in sampler bag because being packed into protective casing can be discharged as much as possible
Substance, to improve detection accuracy.
In one embodiment, in step (3), the time that sealant specimen is volatilized in the sampler bag is 2 hours, temperature
Condition is 65 DEG C.Current examination criteria is placed 16 hours under room temperature, since the time is too long, in order to simplify technique, and the present invention
By improving temperature, accelerates volatilization, shorten the time.
In one embodiment, in step (3), volatile organic matter is acquired out of described sampler bag by acquisition device, institute
Stating acquisition device includes sampling storehouse 4 and more than one sampling pump 5, in use, the sampler bag 3 is placed in the sampling storehouse 4,
Each sampling pump 5 is placed in outside the sampling storehouse 4, is connected separately with sampling pipe between each sampling pump 5 and the sampler bag 3
6, trap tube is installed on the sampling pipe 6.The acquisition device structure designed in this way is simple, is easy production, can sufficiently collect
Volatile organic matter.Sampling pipe generally selects Teflon to be piped.
Preferably, it is connected with valve 9 between the sampling pipe 6 and the sampler bag 3, for controlling gas path on-off, improved
Practicability.
Preferably, two sampling pipes 6 are set altogether, wherein installing TENAX on a sampling pipe 6, (2,6 dibenzofurans are porous poly-
Polymer resin) trap tube 7, DNPH (2,4-dinitrophenylhydrazine) trap tube 8 is installed on another sampling pipe 6.TENAX trap tube and
DNPH trap tube is existing equipment, for the sake of succinct description, is repeated no more, it is organic that both of which can effectively collect volatility
Object.
Preferably, glazing compound volatile organic matter paved set condition is as shown in table 1 below, can effectively acquire various volatilizations
Property organic matter.
1. glazing compound volatile organic matter paved set condition of table
Preferably, the test sample at least carries out 2 samplings in volatile organic matter paved set, and is surveyed in parallel
Examination, analysis can be according to analytical equipment in HJ/T 400-2007.
In one embodiment, a blank sampler bag is set as a control group, refers to Fig. 3, right side is in sampling storehouse 4
Blank sampler bag.The processing that all pairs of tests are carried out with sampler bag is all synchronized and is applied on blank sampler bag, so most by the two
Whole testing result is compared, and blank interference can be discharged, improve test accuracy.
In the glazing compound detection practice of a specific vehicle, the dosage of sealant specimen is 300g~400g, coating
2h~5h is placed after load sample part；Load sample part be in top surface opening rectangular box, length, width and height having a size of 200mm × 180mm ×
10mm, priming paint usage amount are 10g~20g, coat cube aluminium foil inside circumference and bottom, generally primer coating 1min~
It is coated sealant specimen after 5min, makes to cover cube aluminium foil inside circumference and bottom, and with scraper plate by sample surfaces equating；
Protective casing in cuboid and bottom surface be real face, in top surface and surrounding side three faces be porosity of=30% it is mesh-structured,
Remaining one side open design in surrounding side, length, width and height are having a size of 400mm × 400mm × 150mm, sampler bag volume
2000L.Specific implementation process is as follows:
1) it is cut out 220mm × 200mm aluminium foil, 10mm is respectively folded up along four sides, forms 200mm × 180mm × 10mm
Box-like aluminium foil is shown in attached drawing 1；
2) one layer of priming paint is uniformly brushed in aluminium foil bottom and inside circumference, usage amount about 15g, place 2 under the conditions of 23 DEG C~
3min；
3) sealant specimen is applied along aluminium foil bottom, bottom and surrounding, usage amount (350 ± 5) g is completely covered；
4) using scraper plate by the equating of sealant specimen surface, sample is in cuboid box shape, exposes on one side, is placed in air ring
In border, sample detection is immediately available for after 23 DEG C of solidification 3h；
5) for sample detection after sealant specimen after solidification being put into stainless steel frame (see attached drawing 2)；
6) sealing after stainless steel frame being put into 2000L sampler bag, sampler bag is by following pretreatment:
A) sampler bag is sealed, then evacuates the gas in the sampler bag, then be filled with and account for into the sampler bag
The pure nitrogen gas of the sampler bag volume 50%；
B) then the sampler bag is extracted out the gas in the sampler bag in placing in 65 DEG C of insulating box 2 hours；
C) repetitive operation is above-mentioned a), b) step is twice；
7) after being filled with the pure nitrogen gas of sample bag volume 30% into sampler bag at room temperature, gas is extracted out with pump；
8) according to the pure nitrogen gas for being filled with into sampler bag sampler bag volume 50% after 2 operations 7) is repeated；
9) 8) packaged sampler bag in is put into 65 DEG C of insulating box and places 2h；
10) sample is at 65 DEG C after constant temperature 2h, according to assembling acquisition device shown in attached drawing 3, and should be according to following step
Sampling:
A) sampler bag equipped with part gently is rubbed, makes internal gas equalization, crack valve squeezes out residue gas in pipeline
Body；
B) assembly TENAX pipe and DNPH pipe；
C) opening conduits valve starts to sample；
D) trap tube for having adopted sample should close both ends immediately；
E) blank sampler bag carries out blank sampling by above-mentioned steps；
11) after according to the piping of assembly installation shown in attached drawing 3, TENAX pipe, DNPH pipe, gas is extracted；Trap conditions are shown in Table 1；
12) TENAX and DNPH trap tube should at least carry out 2 samplings as parallel testing under the above conditions, trap
Complete trap tube should be analyzed immediately, and analysis can be according to analytical equipment in HJ/T 400-2007；
13) volatile organic matter of this method measurement glazing compound carries out the content of organics that data processing obtains and answers
It must not be beyond limit value as defined in table 2.
The requirement of 2 glazing compound volatile organic matter limit value of table
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all at this
Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly
It is included in other related technical areas in scope of patent protection of the invention.
Claims (10)
1. a kind of vehicle glass sealant volatile organic matter sample preparation device, which is characterized in that including sampler bag, load sample part and tool
There is the protective casing of air hole；Sealant specimen is coated on the load sample part, and the load sample part is placed in the protective casing,
The protective casing is placed in the sampler bag.
2. vehicle glass sealant volatile organic matter sample preparation device as described in claim 1, which is characterized in that the load sample
The sealant specimen coated face of part is pre-coated with priming paint, the bottom coated on the component to be sealed of the priming paint and sealant specimen
Qi Xiangtong.
3. vehicle glass sealant volatile organic matter sample preparation device as claimed in claim 1 or 2, which is characterized in that described
Load sample part and the protective casing are all made of metal material and are made.
4. vehicle glass sealant volatile organic matter sample preparation device as claimed in claim 1 or 2, which is characterized in that described
Load sample part is box-like in top surface opening, and the protective casing is in cuboid, and the bottom surface of the protective casing is real face, described
Three faces are mesh-structured, the surrounding side of the protective casing of porosity of=30% in the top surface and surrounding side of protective casing
In remaining one side open design.
5. a kind of vehicle glass sealant Simple, Practical Determination Method of VOCs, which is characterized in that using as in Claims 1-4
Described in any item vehicle glass sealant volatile organic matter sample preparation devices, comprising the following steps:
(1) in the installation procedure of vehicle glass, the quality dosage m of sealant, the car of sealant distribute area s, close for confirmation
Sealing coating after to vehicle it is offline between interval time t；
(2) taking quality is that the sealant specimen of m is coated on load sample part and spreading area is equal to s, then places t times, most
Load sample part is placed in the protective casing afterwards, then the protective casing is placed in the sampler bag；
(3) after glue sample to be sealed volatilizees in the sampler bag, volatile organic matter is acquired out of described sampler bag；
(4) assay is carried out to volatile organic matter collected out of described sampler bag.
6. vehicle glass sealant Simple, Practical Determination Method of VOCs as claimed in claim 5, which is characterized in that step (2)
In, before the protective casing is placed in the sampler bag, scavenging processing is carried out to the sampler bag in advance, specifically
Steps are as follows:
A) sampler bag is sealed, then evacuates the gas in the sampler bag, then be filled with into the sampler bag account for it is described
The pure nitrogen gas of sampler bag volume 40~60%；
B) then the sampler bag is extracted out the gas in the sampler bag in placing in 65 DEG C of insulating box 2 hours；
C) repetitive operation is above-mentioned a), b) step is more than once.
7. vehicle glass sealant Simple, Practical Determination Method of VOCs as claimed in claim 6, which is characterized in that step (2)
In, the protective casing is being placed in the sampler bag and then secondary scavenging processing is carried out to the sampler bag, it is specific to walk
It is rapid as follows:
A) sampler bag is sealed, is then filled at room temperature into the sampler bag and accounts for the sampler bag volume 25~35%
Pure nitrogen gas, then by the sampler bag gas extract out；
B) the above-mentioned a) step of repetitive operation is more than once；
C) pure nitrogen gas for accounting for the sampler bag volume 40~60% is filled in Xiang Suoshu sampler bag.
8. the vehicle glass sealant Simple, Practical Determination Method of VOCs as described in claim 5 or 6 or 7, which is characterized in that step
Suddenly in (3), the time that sealant specimen is volatilized in the sampler bag is 2 hours, and temperature condition is 65 DEG C.
9. the vehicle glass sealant Simple, Practical Determination Method of VOCs as described in claim 5 or 6 or 7, which is characterized in that step
Suddenly in (3), volatile organic matter is acquired out of described sampler bag by acquisition device, the acquisition device includes sampling storehouse and one
A above sampling pump, in use, the sampler bag is placed in the sampling storehouse, each sampling pump is placed in the sampling storehouse
Outside, it is connected separately with sampling pipe between each sampling pump and the sampler bag, trap tube is installed on the sampling pipe.
10. the vehicle glass sealant Simple, Practical Determination Method of VOCs as described in claim 5 or 6 or 7, which is characterized in that
One blank sampler bag is set as a control group.
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