CN107843471A - A kind of efficient photovoltaic module degree of cross linking tests sampling method - Google Patents
A kind of efficient photovoltaic module degree of cross linking tests sampling method Download PDFInfo
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- CN107843471A CN107843471A CN201710960157.2A CN201710960157A CN107843471A CN 107843471 A CN107843471 A CN 107843471A CN 201710960157 A CN201710960157 A CN 201710960157A CN 107843471 A CN107843471 A CN 107843471A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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Abstract
The present invention relates to a kind of efficient photovoltaic module degree of cross linking to test sampling method, belongs to photovoltaic electrification component technical field.Efficient photovoltaic module degree of cross linking test sampling method comprises the following steps：（1）Take uncrosslinked EVA samples；（2）Uncrosslinked EVA samples are wrapped up using PET film；（3）Uncrosslinked EVA samples are positioned on glass；（4）Lid first layer high temperature cloth；（5）Lid second layer high temperature cloth；（6）Lamination；（7）Remove second layer high temperature cloth and first layer high temperature cloth；（8）Remove the PET film on glass；（9）PET film is opened, obtains EVA cross-linked samples.The efficient photovoltaic module degree of cross linking test sampling method of the present invention, uncrosslinked EVA samples are wrapped up with PET film, backboard is substituted with first layer high temperature cloth, EVA cross-linked samples are saved from glass and extract the time got off on backboard, it is effective to improve operating efficiency, and the sampling mode need not use art knife, the security incident caused by cutter improper use in sampling process can be avoided.
Description
Technical field
The present invention relates to a kind of efficient photovoltaic module degree of cross linking to test sampling method, belongs to photovoltaic electrification component technology neck
Domain.
Background technology
EVA (copolymer of acetic acid and vinylacetate) is package material the most frequently used in current photovoltaic component encapsulating technique
Material, mainly by adding the various differences such as ultraviolet absorber, UV stabilizer, antioxidant and crosslinking agent in EVA base-materials
Additive be made.EVA can crosslink reaction in the curing process, form a kind of tridimensional network, make its each side
Face performance is all largely increased, and sealing and protective effect well are played to solar cell, is the master of current photovoltaic module
Want encapsulating material.The test of the EVA degrees of cross linking occupies larger specific gravity in assembly reliability test at present, how fast and effectively to monitor
The EVA degrees of cross linking turn into urgent problem.
Sampling for crosslinked EVA at present generally is analog sample, i.e. taking using glass+EVA+ backboards+high temperature cloth
With mode, the sampling mode not only needs the plenty of time, and the EVA after crosslinking is removed into tool from glass using cutter
There is certain danger.
The content of the invention
The technical problem to be solved in the present invention is, in view of the shortcomings of the prior art, proposing that one kind can be monitored fast and effectively
The efficient photovoltaic module degree of cross linking test sampling method of the EVA degrees of cross linking.
The present invention is to solve the technical scheme that above-mentioned technical problem proposes to be：A kind of efficient photovoltaic module degree of cross linking test takes
Quadrat method, comprise the following steps：
(1) uncrosslinked EVA samples are taken；
(2) uncrosslinked EVA samples are wrapped up using PET film；
(3) the uncrosslinked EVA samples after PET film is wrapped up are positioned on glass；
(4) top of the uncrosslinked EVA samples after PET film parcel covers first layer high temperature cloth；
(5) second layer high temperature cloth is covered in the top of first layer high temperature cloth；
(6) it is laminated using laminating machine above second layer high temperature cloth so that uncrosslinked EVA samples crosslink reaction,
Obtain EVA cross-linked samples；
(7) second layer high temperature cloth and first layer high temperature cloth are removed successively after laminating machine laminating；
(8) PET film on glass is removed；
(9) PET film is opened, obtains EVA cross-linked samples therein.
The improvement of above-mentioned technical proposal is：The material of first layer high temperature cloth is in step (4)：Teflon, thickness are
0.25mm。
The improvement of above-mentioned technical proposal is：The material of second layer high temperature cloth is in step (5)：Teflon, thickness are
0.25mm。
The improvement of above-mentioned technical proposal is：Temperature when being laminated in step (6) is 144 DEG C.
The improvement of above-mentioned technical proposal is：Vacuumize process, pumpdown time 310s are carried out when being laminated in step (6).
The improvement of above-mentioned technical proposal is：Dwell time 640s when being laminated in step (6).
The improvement of above-mentioned technical proposal is：Uncrosslinked EVA samples crosslink the reaction time of reaction in step (6)
950s。
It is of the invention to be using the beneficial effect of above-mentioned technical proposal：
(1) the efficient photovoltaic module degree of cross linking of the invention test sampling method, is wrapped up uncrosslinked EVA samples using PET film,
After cross-linking reaction terminates, it is only necessary to open PET film and can be obtained by EVA cross-linked samples, save EVA cross-linked samples and cut from glass
The time taken off；
(2) the efficient photovoltaic module degree of cross linking of the invention test sampling method substitutes backboard with first layer high temperature cloth, saves EVA and hands over
Connection time for being removed from backboard of sample, the efficient photovoltaic module degree of cross linking of the invention test sampling method can reduced samplings significantly
Time, effectively improve operating efficiency, and the sampling mode need not use art knife, can avoid in sampling process by
In security incident caused by cutter improper use；
(3) the EVA sample EVA cross-linked samples that the efficient photovoltaic module degree of cross linking of the invention test sampling method obtains more are pressed close to
The crosslinking angle value of actual product.
Brief description of the drawings
The invention will be further described below in conjunction with the accompanying drawings：
Fig. 1 is the structural representation of efficient photovoltaic module of embodiment of the present invention degree of cross linking test sampling method；
1- glass, 2-PET films, the uncrosslinked EVA samples of 3-, 4- first layer high temperature cloths, 5- second layer high temperature cloths.
Embodiment
Embodiment
The efficient photovoltaic module degree of cross linking test sampling method of the present embodiment, comprises the following steps：
(1) uncrosslinked EVA samples 3 are taken；
(2) uncrosslinked EVA samples 3 are wrapped up using PET film 2；
(3) the uncrosslinked EVA samples 3 after PET film 2 is wrapped up are positioned on glass 1；
(4) the top covering first layer high temperature cloth 4 of the uncrosslinked EVA samples 3 after the parcel of PET film 2, first layer high temperature cloth 4
Material is：Teflon, thickness 0.25mm；
(5) it is in the top of first layer high temperature cloth 4 covering second layer high temperature cloth 5, the material of second layer high temperature cloth 5：Teflon is thick
Spend for 0.25mm；
(6) it is laminated using laminating machine in the top of second layer high temperature cloth 5, temperature during lamination is 144 DEG C, dwell time
640s, vacuumize process, pumpdown time 310s is carried out during middle lamination so that uncrosslinked EVA samples crosslink reaction, instead
950s between seasonable, obtains EVA cross-linked samples；
(7) second layer high temperature cloth 5 and first layer high temperature cloth 4 are removed successively after laminating machine laminating；
(8) PET film 2 on glass 1 is removed；
(9) PET film 2 is opened, obtains EVA cross-linked samples therein.
The structure of the efficient photovoltaic module degree of cross linking test sampling method of the present embodiment is as shown in Figure 1.
The efficient photovoltaic module degree of cross linking test sampling method of the present invention, is wrapped up uncrosslinked EVA samples using PET film,
After cross-linking reaction terminates, it is only necessary to open PET film and can be obtained by EVA cross-linked samples, save EVA cross-linked samples from glass
Extract the time got off.
The efficient photovoltaic module degree of cross linking test sampling method of the present invention substitutes backboard with first layer high temperature cloth, saves EVA
The time that cross-linked samples are removed from backboard, the efficient photovoltaic module degree of cross linking of the invention test sampling method can reduce significantly to be taken
The sample time, operating efficiency is effectively improved, and the sampling mode need not use art knife, can avoid in sampling process
The security incident caused by cutter improper use.
The EVA sample EVA cross-linked samples that the efficient photovoltaic module degree of cross linking test sampling method of the present invention obtains more are sticked on
The crosslinking angle value of nearly actual product.
A laminating machine is randomly selected during test crosslinking angle value, samples to obtain using traditional analog under identical lamination
EVA cross-linked samples, test crosslinking degrees of data such as table 1, using the present embodiment the efficient photovoltaic module degree of cross linking test sampling side
The EVA cross-linked samples that method obtains, test crosslinking degrees of data such as table 2.
The EVA cross-linked samples test datas that table 1. samples to obtain using traditional analog
The EVA cross-linked samples test datas that table 2. is obtained using the efficient photovoltaic module degree of cross linking test sampling method of the present embodiment
Above-mentioned experimental result explanation；
(1), by contrast it can be seen that traditional analog samples obtained EVA cross-linked samples test data values relative to using this reality
Applying the obtained EVA cross-linked samples test data values of efficient photovoltaic module degree of cross linking test sampling method of example, each point is relatively relatively low
1.3% or so.
(2), average value 1.24%.
(3), the EVA cross-linked samples obtained using the efficient photovoltaic module degree of cross linking test sampling method of the present embodiment are tested
Data compare the crosslinking angle value of closing to reality product.
The present invention is not limited to above-described embodiment.All technical schemes formed using equivalent substitution, all falling within the present invention will
The protection domain asked.
Claims (7)
1. a kind of efficient photovoltaic module degree of cross linking tests sampling method, it is characterised in that：Comprise the following steps：
（1）Take uncrosslinked EVA samples；
（2）The uncrosslinked EVA samples are wrapped up using PET film；
（3）The uncrosslinked EVA samples after PET film is wrapped up are positioned on glass；
（4）The top of the uncrosslinked EVA samples after PET film parcel covers first layer high temperature cloth；
（5）Second layer high temperature cloth is covered in the top of the first layer high temperature cloth；
（6）It is laminated using laminating machine above the second layer high temperature cloth so that the uncrosslinked EVA samples are handed over
Connection reaction, obtains EVA cross-linked samples；
（7）Remove the second layer high temperature cloth and first layer high temperature cloth successively after laminating machine laminating；
（8）Remove the PET film on glass；
（9）The PET film is opened, obtains EVA cross-linked samples therein.
2. the efficient photovoltaic module degree of cross linking according to claim 1 tests sampling method, it is characterised in that：Step（4）In
The material of the first layer high temperature cloth is：Teflon, thickness 0.25mm.
3. the efficient photovoltaic module degree of cross linking according to claim 2 tests sampling method, it is characterised in that：Step（5）In
The material of the second layer high temperature cloth is：Teflon, thickness 0.25mm.
4. the efficient photovoltaic module degree of cross linking according to claim 3 tests sampling method, it is characterised in that：Step（6）In
Temperature during lamination is 144 DEG C.
5. the efficient photovoltaic module degree of cross linking according to claim 4 tests sampling method, it is characterised in that：Step（6）In
Vacuumize process, pumpdown time 310s are carried out during lamination.
6. the efficient photovoltaic module degree of cross linking according to claim 5 tests sampling method, it is characterised in that：Step（6）In
Dwell time 640s during lamination.
7. the efficient photovoltaic module degree of cross linking according to claim 6 tests sampling method, it is characterised in that：Step（6）In
The uncrosslinked EVA samples crosslink the reaction time 950s of reaction.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107314947A (en) * | 2017-06-19 | 2017-11-03 | 北京斯普乐电线电缆有限公司 | A kind of detection method of the flame-proof cross-linking polyolefin cable degree of cross linking |
| CN108760574A (en) * | 2018-04-18 | 2018-11-06 | 晋能光伏技术有限责任公司 | A kind of photovoltaic module encapsulating material fluidity testing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107314947A (en) * | 2017-06-19 | 2017-11-03 | 北京斯普乐电线电缆有限公司 | A kind of detection method of the flame-proof cross-linking polyolefin cable degree of cross linking |
| CN108760574A (en) * | 2018-04-18 | 2018-11-06 | 晋能光伏技术有限责任公司 | A kind of photovoltaic module encapsulating material fluidity testing method |
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