Recycling method of solar backboard material

A technology of a solar back sheet and a recycling method, which is applied in the field of polymer material recycling and reuse, can solve problems such as hindering the large-scale promotion of solar cells, failing to meet the requirements of energy conservation and emission reduction, waste of economic value of materials, etc. Low-cost, easy-to-handle effects

Pending Publication Date: 2022-03-29
QUANZHOU NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the industry can only deal with it through "crushing-compression into blocks" or "incineration". It is gradually eroding people's impression and concept of "green lighting" of solar cells, hindering the large-scale promotion of solar cells

Method used

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  • Recycling method of solar backboard material

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Effect test

Embodiment 1

[0025] A method for recycling solar backboard materials, comprising the following steps:

[0026] (1) Use a crusher to break the solar backplane material into pieces;

[0027] (2) After mixing 20 parts of water, 50 parts of sodium hydroxide, 5 parts of JFC-1 and 60 parts of acetone uniformly, a separating liquid is obtained;

[0028] (3) Place the broken solar backboard material in step (1) into the separation liquid obtained in step (2), and after stirring at 30° C. for 0.1 hour, the separation liquid makes the outer protective layer of the solar backboard material, The interlayer and lamination bonding layer are separated, so that the core structure of the solar backsheet material is completely separated and recycled separately.

[0029] A schematic diagram of one of the fragments of the solar backsheet material after separation is shown in figure 1 As shown, the materials from left to right in the figure are PVDF as the outer protective layer, PET as the middle layer and ...

Embodiment 2

[0031] A method for recycling solar backboard materials, comprising the following steps:

[0032] (1) Use a crusher to break the solar backplane material into pieces;

[0033] (2) After mixing 500 parts of water, 1 part of potassium hydroxide, 0.1 part of JFC-E and 10 parts of ethanol evenly, a separation liquid is obtained;

[0034] (3) Place the broken solar backboard material in step (1) into the separation liquid obtained in step (2), and after stirring for 72 hours at 100° C., the separation liquid makes the outer protective layer of the solar backboard material, The interlayer and lamination bonding layer are separated, so that the core structure of the solar backsheet material is completely separated and recycled separately.

Embodiment 3

[0036] A method for recycling solar backboard materials, comprising the following steps:

[0037] (1) Use a crusher to break the solar backplane material into pieces;

[0038] (2) After mixing 100 parts of water, 20 parts of calcium hydroxide, 1 part of JFC-2 and 20 parts of methanol evenly, a separation liquid is obtained;

[0039] (3) Place the broken solar backboard material in step (1) into the separation liquid obtained in step (2), and after stirring for 10 hours at 50° C., the separation liquid makes the outer protective layer of the solar backboard material, The interlayer and lamination bonding layer are separated, so that the core structure of the solar backsheet material is completely separated and recycled separately.

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Abstract

The invention discloses a method for recovering a solar back panel material, which comprises the following steps of: crushing the solar back panel material by adopting a physical or chemical means, uniformly mixing 20-500 parts of water, 1-50 parts of alkali, 0.1-5 parts of penetrant and 1-60 parts of organic solvent to obtain a separation liquid, and finally separating the separation liquid at the temperature of 30-100 DEG C to obtain the solar back panel material. And placing the solar back panel material in the separation liquid to be treated for 0.1-72 hours, so as to separate the core structure of the solar back panel material. The recycling method of the solar backboard material has the advantages of being free of toxicity in the separation process, high in separation efficiency and low in cost, large-scale treatment is easy in the technological process, and the recycling method has important application value and academic significance.

Description

[0001] This application is a divisional application of "A Method for Recycling Solar Backplane Materials". The application number of the original application is "201710343354.X", and the filing date is 2017.05.16. technical field [0002] The invention relates to the field of recycling and reuse of polymer materials, in particular to a method for recycling solar backboard materials. Background technique [0003] A solar cell is a photoelectric semiconductor sheet that uses sunlight to directly generate electricity. It is mainly composed of photovoltaic glass, EVA, solar cells, EVA and a backplane. With the protection of the environment and the huge demand for renewable clean energy in various countries, solar cells will have broad application prospects. [0004] The solar cell is packaged according to the structure of photovoltaic glass-EVA-solar cell-EVA-back sheet. The back sheet is located on the outermost layer of the back of the battery and is an important part of the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B17/00B29B17/02B29B17/04H01L31/049
CPCH01L31/049B29B17/00B29B17/02B29B17/0412B29B2017/0203B29B2017/0213Y02E10/50Y02W30/62Y02W30/52Y02W30/82
Inventor 卓东贤瞿波陈梅香曾鸽罗水源
Owner QUANZHOU NORMAL UNIV
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