POE adhesive film with high electrical strength and electrical tracking resistance and preparation method thereof

A technology of electric strength and electric tracking, which is applied in the field of solar cells, can solve problems such as low electric strength and electric tracking resistance index, electrical damage of components, power attenuation of components, etc., so as to improve electric strength and electric tracking resistance, reduce Electron conductance, the effect of increasing the degree of cross-linking

Active Publication Date: 2019-05-03
广东莱尔新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The electrical strength and electrical tracking index of the encapsulation films used in the photovoltaic market are generally low, which leads to the electrical damage of the encapsulated photovoltaic modules in the long-term outdoor application process, and eventually the power of the modules is attenuated or even fails.

Method used

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  • POE adhesive film with high electrical strength and electrical tracking resistance and preparation method thereof
  • POE adhesive film with high electrical strength and electrical tracking resistance and preparation method thereof
  • POE adhesive film with high electrical strength and electrical tracking resistance and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0048] A kind of preparation method of above-mentioned adhesive film, comprises the following steps:

[0049] (1), preparation of functional masterbatch: mix ethylene-vinyl acetate copolymer and ethylene-methyl methacrylate copolymer according to the formula amount, then add the formula amount photoinitiator and mix evenly, then add stabilizer and mix evenly, Under the condition that the processing temperature is 90-150°C, extrude, cool and pelletize to obtain functional masterbatch;

[0050] (2) Preparation of ethylene-octene copolymer modified particles: mix ethylene-octene copolymer, cross-linking agent, cross-linking accelerator and tackifier uniformly according to the formula to obtain a premix, pass the premix through The extruder performs reactive extrusion, and the extruded product is cooled, drawn, and pelletized into ethylene-octene copolymer modified particles;

[0051] (3), mix the functional masterbatch of step (1) and the ethylene-octene copolymer modified parti...

Embodiment 1

[0058] The formula of the POE adhesive film of this embodiment is shown in the following table in terms of raw materials in parts by weight.

[0059]

[0060] The preparation method of above-mentioned film, comprises the following steps:

[0061] (1), preparation of functional masterbatch: mix ethylene-vinyl acetate copolymer and ethylene-methyl methacrylate copolymer according to the formula amount, then add the formula amount of photoinitiator and mix evenly, then add stabilizer and mix evenly, Under the condition that the processing temperature is 90-150°C, extrude, cool and granulate to obtain functional masterbatch, pack the functional masterbatch in opaque packaging bags, and place it for more than 2 hours;

[0062] (2) Preparation of ethylene-octene copolymer modified particles: mix ethylene-octene copolymer, cross-linking agent, cross-linking accelerator and tackifier uniformly according to the formula to obtain a premix, pass the premix through A twin-screw extrud...

Embodiment 2

[0067] The POE film of this example and its preparation method are basically the same as those of Example 1, the difference lies in the formulation and preparation process parameters, as shown in the table below.

[0068] The formula of the POE adhesive film of this embodiment is shown in the following table in terms of raw materials in parts by weight.

[0069]

[0070]

[0071] The process parameters of POE film preparation are shown in the table below.

[0072] step 1)

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Abstract

The invention discloses a POE adhesive film with high electrical strength and electrical tracking resistance. The POE adhesive film comprises the following raw materials by weight: 70 to 90 parts of ethylene-octene copolymer modified particles and 10 to 30 parts of a functional masterbatch, wherein the functional masterbatch comprises the following raw materials by weight: 70 to 90 parts of an ethylene-vinyl acetate copolymer, 10 to 30 parts of an ethylene-methyl methacrylate copolymer, 0.1 to 5.0 parts of a photoinitiator and 0.5 to 3.0 parts of a stabilizer; and the stabilizer is a benzil stabilizer. The invention also discloses a preparation method for the above-mentioned POE adhesive film. On the basis that high transmittance and adhesion properties of the adhesive film are maintained,the POE adhesive film provided by the invention has high electrical strength and electrical tracking index resistance, is applied to packaging of a photovoltaic assembly, can effectively improve theelectrical strength and electrical tracking index resistance of the photovoltaic assembly, avoids large drop or failure of the power of the photovoltaic assembly in the process of photoelectric conversion, thereby greatly reducing hot spot effect and the phenomenon of electric breakdown damage or electrical tracking damage.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a POE adhesive film with high electric strength and resistance to electrical traces and a preparation method. Background technique [0002] With the continuous development of solar energy utilization technology, solar energy is widely used as a green energy source. As a unit carrier for utilizing solar energy, solar photovoltaic modules can be combined into large-scale photovoltaic power stations or household distributed small power stations to continuously provide electricity for thousands of households. [0003] However, during the long-term use of photovoltaic modules after they are installed and connected to the grid, they are constantly subjected to natural environments including high temperature and high humidity aging, thermal oxygen aging, high and low temperature aging, ultraviolet aging, and foreign matter pollution in the working state of absorbing light energy and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J123/08C09J11/06C09J7/10
Inventor 李政刘宝玉曾永健
Owner 广东莱尔新材料科技股份有限公司
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