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A kind of cross-linking degree test curve fitting formula method and cross-linking degree detection method

A technology of cross-linking degree and detection value, which is applied in the direction of transmittance measurement, geometric CAD, CAD numerical modeling, etc., can solve the problems of on-site production impact, use risk and cost, and long cycle, so as to achieve zero operation risk and improve The effect of detection efficiency

Active Publication Date: 2021-12-07
TIANJIN YINGLI NEW ENERGY RESOURCES
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] There is a key experimental inspection item in the production process of solar photovoltaic modules, that is, the EVA cross-linking degree test. This test item is mainly used to understand whether the performance of EVA can meet the process requirements of photovoltaic modules after heating and lamination. However, traditional experiments The detection method has a long cycle, and it takes at least 12 hours to complete the experimental detection process. Once the cross-linking degree results do not meet the requirements, there will be quality problems in the components produced within this 12 hours, and then adjust the parameters and start the cross-linking degree test again. A detection process of at least 12 hours is required, which will also have a considerable impact on on-site production; in addition, the xylene extraction solvent used in the traditional crosslinking degree test method is a toxic reagent, and there are risks and risks in use and handling. cost
[0003] Therefore, there is an urgent need for a cross-linking degree detection method to improve the two disadvantages of toxicity and long detection period in the prior art, which is a difficult problem for those skilled in the art to overcome

Method used

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  • A kind of cross-linking degree test curve fitting formula method and cross-linking degree detection method
  • A kind of cross-linking degree test curve fitting formula method and cross-linking degree detection method
  • A kind of cross-linking degree test curve fitting formula method and cross-linking degree detection method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] At the same room temperature, take small experimental samples A and B of the same specification, and laminate them at the same position of the same laminator, send the laminated small sample A to the routine experiment of benzene extraction, and obtain the detection value x of the cross-linking degree, after lamination The light transmittance test of the small sample B is carried out to obtain the light transmittance value y, the detection value x of the benzene extraction crosslinking degree and the light transmittance value y form a data set, adjust the lamination time, and the lamination time starts from 30 seconds. A total of 33 data sets were obtained:

[0024]

[0025] The above-mentioned appropriate 33 data groups are used to establish the curve diagrams of small sample A and small sample B, see attached figure 1 As shown, the relationship between the cross-linking detection value x and the light transmittance value y obtained by fitting the graph is: y = 1.66...

Embodiment 2

[0027] In Example 1, the cross-linking degree detection value x only selects the range of 20%-100% and arranges them in order from low to high, that is, the data group whose group number is 21-33, and establishes the data sets of small sample A and small sample B. The graph, specifically attached figure 2 As shown in the graph, the relationship between the crosslinking degree detection value x and the light transmittance value y obtained by fitting the graph is: y = -0.0754x² + 0.2289x +0.8396, R² = 0.8038.

[0028] The formula for calculating the degree of cross-linking is deduced from this formula: x=-27.766y² + 58.614y - 29.943, R² =0.8039.

[0029] According to the calculation formula x=-27.766y² + 58.614y - 29.943, the method for detecting the degree of cross-linking set by R² = 0.8039 includes the following steps:

[0030] s1: Use a laminator to make a cross-linked EVA sample;

[0031] s2: the light transmittance value y of the small sample in the test step s1;

[00...

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Abstract

The invention provides a curve fitting formula method for testing the degree of cross-linking and a method for detecting the degree of cross-linking. The calculation formula of the degree of cross-linking can be obtained by fitting the data set, and the test of the degree of cross-linking can be completed within 1 hour. Improve the detection efficiency of the degree of cross-linking and help the production to be completed smoothly. No toxic and harmful substances will be used. The operation risk is zero and there is no harm.

Description

technical field [0001] The invention relates to the technical field of photovoltaic module manufacturing, in particular to a method for fitting a cross-linking degree test curve and a cross-linking degree detection method. Background technique [0002] There is a key experimental inspection item in the production process of solar photovoltaic modules, that is, the EVA cross-linking degree test. This test item is mainly used to understand whether the performance of EVA can meet the process requirements of photovoltaic modules after heating and lamination. However, traditional experiments The detection method has a long cycle, and it takes at least 12 hours to complete the experimental detection process. Once the cross-linking degree results do not meet the requirements, there will be quality problems in the components produced within this 12 hours, and then adjust the parameters and start the cross-linking degree test again. A detection process of at least 12 hours is require...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/59G06F30/17G06F111/10
Inventor 李跃王雪陈刚李巍巍张晓旭
Owner TIANJIN YINGLI NEW ENERGY RESOURCES
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