CN109884000A - A kind of degree of cross linking test curve fitting formula method and degree of cross linking detection method - Google Patents
A kind of degree of cross linking test curve fitting formula method and degree of cross linking detection method Download PDFInfo
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- CN109884000A CN109884000A CN201910153601.9A CN201910153601A CN109884000A CN 109884000 A CN109884000 A CN 109884000A CN 201910153601 A CN201910153601 A CN 201910153601A CN 109884000 A CN109884000 A CN 109884000A
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Abstract
The present invention provides a kind of degree of cross linking test curve fitting formula method and degree of cross linking detection methods, degree of cross linking calculation formula is obtained by the method being fitted to data group, the test of the degree of cross linking can be completed in 1 hour, it produces and smoothly completes to improve detection efficiency and the help of the degree of cross linking, any poisonous and harmful substance will not be used, operational risk is zero, and any harmfulness is not present.
Description
Technical field
The present invention relates to photovoltaic module manufacturing technology field more particularly to a kind of degree of cross linking test curve fitting formula methods
And degree of cross linking detection method.
Background technique
Solar photovoltaic assembly has a crucial experimental check project in process of production, i.e. the EVA degree of cross linking is tested, this
A test item is mainly used for understanding whether EVA its performance after heated lamination can reach the technique requirement of photovoltaic module, but
It is that traditional experiment detection method period is longer, at least needs to complete for 12 hours or more to test detection process, once occur
When degree of cross linking result is undesirable, the component produced in this 12 hours there is hidden danger of quality, then adjusting parameter from newly into
The row degree of cross linking tests the detection process for then needing at least 12 hours again, this can also generate no small influence to produced on-site；In addition,
The xylene extraction solvent used in traditional degree of cross linking test method be toxic reagent, all exist on using and handle risk with
Cost.
Therefore, a kind of degree of cross linking detection method is needed, Lai Gaishan is toxic in the prior art and detection cycle long two is big
Drawback is the problem that those skilled in the art need to capture.
Summary of the invention
In view of this, being fitted the present invention provides a kind of degree of cross linking test curve fitting formula method, by the detection method
Formula and matching used degree of cross linking detection method, concrete scheme it is as follows:
A method of degree of cross linking test curve fitting formula is obtained, is included the following steps:
S1, it is identical at room temperature, take same specification test sample A and B, be laminated in the same position of same laminating machine；
Sample A after S2, lamination is sent into benzene and extracts routine experiment, obtains degree of cross linking detected value x, and the sample B after lamination carries out saturating
The test of light rate, obtains light transmittance values y, and benzene extracts degree of cross linking detected value x and light transmittance values y and constitutes a data group；
S3: adjustment lamination times repeat S1-S2 step, after n times experiment, by all data groups by degree of cross linking detected value a by 0-
100% sequence arranges；
S4；The data group that will be arranged obtained in S3 step establishes the curve graph of sample A and sample B, is fitted by the curve graph
Obtain the relational expression of degree of cross linking detected value x and light transmittance values y are as follows: y=1.6678x3-2.7919x22+ 1.5086x+
0.677, R2=0.6386；
Specifically, in the step S3, the degree of cross linking detected value only choose 20%-100% range by sequence from low to high
Arrangement；
The data group that will be arranged obtained in S3 step establishes the curve graph of sample A and sample B, is fitted by the curve graph
To the relational expression of degree of cross linking detected value x and light transmittance values y are as follows: y=- 0.0754x2+0.2289x+0.8396, R2=
0.8038。
A kind of degree of cross linking calculation formula, specifically: x=- 27.766y2+58.614y -29.943, R2=0.8039.
A kind of detection set according to calculation formula x=- 27.766y2+58.614y -29.943, R2=0.8039
The method of the degree of cross linking, includes the following steps:
S1: the sample after laminating machine production EVA crosslinking is used；
S2: the transmittance values y of testing procedure s1 sample；
S3: degree of cross linking numerical value x is calculated according to calculation formula.
A kind of degree of cross linking test curve fitting formula method and degree of cross linking detection method provided by the invention have with following
Beneficial effect: 1, this method can complete the test of the degree of cross linking in 1 hour, be produced with improving detection efficiency and the help of the degree of cross linking
Smoothly complete.2, this patent will not use any poisonous and harmful substance, and any harmfulness is not present in operational risk zero.
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 required attached drawing in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the fitted figure proper using the method for embodiment 1；
Fig. 2 is the fitted figure proper using the method for embodiment 2；
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 embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1:
It is identical at room temperature, take same specification test sample A and B, be laminated in the same position of same laminating machine, after lamination
Sample A is sent into benzene and extracts routine experiment, obtains degree of cross linking detected value x, and the sample B after lamination carries out light transmittance test, obtains
Light rate value y, benzene extract degree of cross linking detected value x and light transmittance values y and constitute a data group, adjust lamination times, lamination times from
Beginning in 30 seconds is successively risen progressively, and obtains 33 data groups altogether:
By above-mentioned 33 proper data groups, the curve graph of sample A and sample B are established, referring to figure 1, by the curve graph
Fitting obtains the relational expression of degree of cross linking detected value x and light transmittance values y are as follows: y=1.6678x3-2.7919x22+ 1.5086x
+ 0.677, R2=0.6386；
Embodiment 2
By in embodiment 1, the degree of cross linking detected value x only chooses arranging by sequence from low to high for 20%-100% range, i.e.,
Group number is the data group of 21-33, establishes the curve graph of sample A and sample B, specially attached curve graph shown in Fig. 2, by the curve
Figure fitting obtains the relational expression of degree of cross linking detected value x and light transmittance values y are as follows: and y=- 0.0754x2+0.2289x+
0.8396, R2=0.8038.
Degree of cross linking calculation formula is gone out by the derivation of equation: x=- 27.766y2+58.614y -29.943, R2=
0.8039。
According to calculation formula x=- 27.766y2+58.614y -29.943, the detection that R2=0.8039 is set is crosslinked
The method of degree, includes the following steps:
S1: the sample after laminating machine production EVA crosslinking is used；
S2: the transmittance values y of testing procedure s1 sample；
S3: degree of cross linking numerical value x is calculated according to calculation formula.
In order to verify the accuracy of above-mentioned detection method, 18 groups of comparative tests have been carried out using three different laminating machinees,
Test data is as follows:
It can analyze by above data, it is known that light transmittance crosslinking angle value obtained by calculation and actual use xylene process are surveyed
It is 6.94% that obtained degree of cross linking numerical value, which is tried, there are the maximum value of deviation, and average deviation difference is 2.85%, meets xylene extraction inspection
7% deviation requirement in survey method, and this test is the examination done for different laminating machinees in the sample position of different location
It tests, meets actual production scene, so the regression equation that this patent method is established can be used as the test of the actual production degree of cross linking
Method.This bias contribution and 7% deviation range of dimethylbenzene test are substantially similar, so the regression equation that this patent method is established can
Method to be tested as the actual production degree of cross linking.
The entire test process of this method only needs to test the light transmittance of sample after crosslinking, is not related to toxic having using any
Harmful chemicals, security risk zero；Easy to operate, professional knowledge requirement is lower, and operation threshold is low, by simply training i.e.
Test method can skillfully be grasped.And sample making completion not will do it secondary operation, the test degree of cross linking is relatively accurate, and when repetition measurement is inclined
Poor risk is low.Entire test process step is simple, and total duration is no more than 1 hour, smaller for production line influence, as being crosslinked
The repetition measurement degree of cross linking can obtain rapidly as a result, not impacting to subsequent production when spending unqualified.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form, all of these belong to the protection of the present invention.
Claims (5)
1. a kind of method for obtaining degree of cross linking test curve fitting formula, characterized by the following steps:
S1, it is identical at room temperature, take same specification test sample A and B, be laminated in the same position of same laminating machine；
Sample A after S2, lamination is sent into benzene and extracts routine experiment, obtains degree of cross linking detected value x, and the sample B after lamination carries out saturating
The test of light rate, obtains light transmittance values y, and benzene extracts degree of cross linking detected value x and light transmittance values y and constitutes a data group；
S3: adjustment lamination times repeat S1-S2 step, after n times experiment, by all data groups by degree of cross linking detected value a by 0-
100% sequence arranges；
S4；The data group that will be arranged obtained in S3 step establishes the curve graph of sample A and sample B, is fitted by the curve graph
The relational expression of degree of cross linking detected value x and light transmittance values y are obtained, according to the obtained relational expression, calculates degree of cross linking numerical value.
2. a kind of method for obtaining degree of cross linking test curve fitting formula according to claim 1, it is characterised in that: described
Relational expression is y=1.6678x3-2.7919x22+ 1.5086x+0.677, R2=0.6386.
3. a kind of method for obtaining degree of cross linking test curve fitting formula according to claim 2, it is characterised in that:
In the step S3, the degree of cross linking detected value only chooses arranging by sequence from low to high for 20%-100% range；
The data group that will be arranged obtained in S3 step establishes the curve graph of sample A and sample B, is fitted by the curve graph
To the relational expression of degree of cross linking detected value x and light transmittance values y are as follows: y=- 0.0754x2+0.2289x+0.8396, R2=
0.8038。
4. a kind of degree of cross linking calculation formula that fitting formula method according to claim 3 obtains, it is characterised in that: x=-
27.766y2+58.614y -29.943, R2=0.8039.
5. a kind of method of the calculation formula detection degree of cross linking according to claim 4, which is characterized in that including walking as follows
It is rapid:
S1: the sample after laminating machine production EVA crosslinking is used；
S2: the light transmittance values y of testing procedure s1 sample；
S3: degree of cross linking numerical value x is calculated according to calculation formula.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323243A (en) * | 2011-06-17 | 2012-01-18 | 常州天合光能有限公司 | Structure and method for testing light transmittance of laminated EVA (Ethylene Vinyl Acetate) film used for photovoltaic assembly |
| CN103709296A (en) * | 2013-12-30 | 2014-04-09 | 上海微谱化工技术服务有限公司 | Method for extracting pure ethylene-ethylene vinyl-acetate copolymer |
| CN104347447A (en) * | 2014-09-15 | 2015-02-11 | 阿特斯(中国)投资有限公司 | EVA (ethylene-vinyl acetate copolymer) cross-linking rate test method |
| CN105950038A (en) * | 2016-05-16 | 2016-09-21 | 常州斯威克光伏新材料有限公司 | Transparent EVA (ethylene vinyl acetate copolymer) packaging adhesive film for double-glass assembly |
| CN106940328A (en) * | 2017-02-07 | 2017-07-11 | 中节能太阳能科技（镇江）有限公司 | A kind of method of testing of the photovoltaic module EVA encapsulating material degrees of cross linking |
-
2019
- 2019-02-28 CN CN201910153601.9A patent/CN109884000B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323243A (en) * | 2011-06-17 | 2012-01-18 | 常州天合光能有限公司 | Structure and method for testing light transmittance of laminated EVA (Ethylene Vinyl Acetate) film used for photovoltaic assembly |
| CN103709296A (en) * | 2013-12-30 | 2014-04-09 | 上海微谱化工技术服务有限公司 | Method for extracting pure ethylene-ethylene vinyl-acetate copolymer |
| CN104347447A (en) * | 2014-09-15 | 2015-02-11 | 阿特斯(中国)投资有限公司 | EVA (ethylene-vinyl acetate copolymer) cross-linking rate test method |
| CN105950038A (en) * | 2016-05-16 | 2016-09-21 | 常州斯威克光伏新材料有限公司 | Transparent EVA (ethylene vinyl acetate copolymer) packaging adhesive film for double-glass assembly |
| CN106940328A (en) * | 2017-02-07 | 2017-07-11 | 中节能太阳能科技（镇江）有限公司 | A kind of method of testing of the photovoltaic module EVA encapsulating material degrees of cross linking |
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