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Three-layer co-extrusion glue-free transparent solar photovoltaic backboard and preparation process thereof

A solar photovoltaic, three-layer co-extrusion technology, applied in the field of solar photovoltaic backplane, can solve the problems affecting the flexibility of the backplane, bending resistance and deformation resistance, unfavorable heat dissipation of solar cells, lack of heat dissipation function design, etc., to achieve favorable Effect of heat dissipation, improvement of thermal conductivity and thermal stability, and high weather resistance

Active Publication Date: 2021-06-08
浙江中聚材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the main components of each layer are different. On the one hand, it will increase the difficulty of bonding between layers during the molding process. On the other hand, due to the different thermal expansion coefficients of the components between different layers, it is easy to cause stress between layers during use. concentrated, resulting in delamination or even cracking, which reduces the service life, and the backplane is not transparent, which is not easy for light to penetrate, and lacks heat dissipation function design, which is not conducive to the heat dissipation of solar cells
In addition, the content of inorganic filler is relatively high, which will affect the flexibility, bending resistance and deformation resistance of the backplane.

Method used

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  • Three-layer co-extrusion glue-free transparent solar photovoltaic backboard and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1 provides a three-layer co-extruded adhesive-free transparent solar photovoltaic backsheet, which includes a transparent inner layer, a transparent middle layer and a transparent outer layer, and the transparent middle layer is located between the transparent inner layer and the transparent outer layer.

[0039] The raw materials for preparing the transparent inner layer include, by weight, 10 parts of LLDPE, 5 parts of LDPE, 75 parts of PP, 0.3 parts of AlN, and 0.3 parts of ethylene methacrylic acid ionomer.

[0040] The raw materials for the preparation of the transparent middle layer include 10 parts of LLDPE, 5 parts of LDPE, 75 parts of PP, 0.3 parts of 2,2,6,6-tetramethyl-4-hydroxypiperidine, 2,2', 0.3 parts of 4,4'-tetrahydroxybenzophenone, 0.3 parts of ethylene methacrylic acid ionomer.

[0041] The raw materials for preparing the transparent outer layer include 10 parts of LLDPE, 5 parts of LDPE, 70 parts of PP and 0.3 parts of ethylene methacrylic...

Embodiment 2

[0052] Embodiment 2 provides a three-layer co-extruded adhesive-free transparent solar photovoltaic backsheet, comprising a transparent inner layer, a transparent middle layer and a transparent outer layer, and the transparent middle layer is located between the transparent inner layer and the transparent outer layer.

[0053] The raw materials for preparing the transparent inner layer include 10 parts of LLDPE, 5 parts of LDPE, 75 parts of PP, 0.3 parts of AlN, and 0.3 parts of ethylene methacrylic acid ionomer in parts by weight.

[0054] The raw materials for the preparation of the transparent middle layer include 10 parts of LLDPE, 5 parts of LDPE, 75 parts of PP, 0.3 parts of 2,2,6,6-tetramethyl-4-hydroxypiperidine, 2,2', 0.3 parts of 4,4'-tetrahydroxybenzophenone, and 0.3 parts of ethylene methacrylic acid ionomer.

[0055] The raw materials for preparing the transparent outer layer include 10 parts of LLDPE, 15 parts of LDPE, 75 parts of PP, and 0.3 parts of ethylene me...

Embodiment 3

[0066] Embodiment 3 provides a three-layer co-extruded adhesive-free transparent solar photovoltaic backsheet, comprising a transparent inner layer, a transparent middle layer and a transparent outer layer, and the transparent middle layer is located between the transparent inner layer and the transparent outer layer.

[0067] The raw materials for preparing the transparent inner layer include, by weight, 10 parts of LLDPE, 5 parts of LDPE, 70 parts of PP, 0.3 parts of AlN, and 0.3 parts of ethylene methacrylic acid ionomer.

[0068] The raw materials for the preparation of the transparent middle layer include 10 parts of LLDPE, 5 parts of LDPE, 70 parts of PP, 0.3 parts of 2,2,6,6-tetramethyl-4-hydroxypiperidine, 2,2', 0.3 parts of 4,4'-tetrahydroxybenzophenone, and 0.3 parts of ethylene methacrylic acid ionomer.

[0069] The raw materials for preparing the transparent outer layer include 10 parts of LLDPE, 5 parts of LDPE, 70 parts of PP and 0.3 parts of ethylene methacrylic...

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Abstract

The invention belongs to the technical field of solar photovoltaic backboards, and particularly relates to a three-layer co-extrusion glue-free transparent solar photovoltaic backboard, which comprises a transparent inner layer, a transparent middle layer and a transparent outer layer, and is characterized in that the transparent middle layer is positioned between the transparent inner layer and the transparent outer layer; the preparation raw materials of the transparent inner layer at least comprise polyolefin; and the preparation raw materials of the transparent middle layer at least comprise polyolefin, and the preparation raw materials of the transparent outer layer at least comprise polyolefin and ethylene methacrylic acid ionomer.

Description

technical field [0001] The invention belongs to the technical field of solar photovoltaic backplanes, in particular to a three-layer co-extruded glue-free transparent solar photovoltaic backplane and a preparation process thereof. Background technique [0002] With the gradual depletion of carbon energy and the maturity of solar photovoltaic power generation technology, photovoltaic power generation will occupy an important seat in the world's energy consumption in the near future, and even become the main body of energy supply. However, photovoltaic modules, as the components of photovoltaic arrays, Its core part is the solar cell, but its life and working performance are restricted by the various components of the module, and the most important part is the backplane of the photovoltaic module. [0003] The back sheet of existing photovoltaic modules usually adopts a back film composed of three layers of thin films. For example, CN 109411558A discloses a solar battery back...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/048H01L31/049H01L31/052H01L31/0216H01L31/18C08L23/12C08L23/06C08L23/08C08K3/28C08K5/3435C08K5/132B29C48/18B29C48/07
CPCH01L31/0481H01L31/049H01L31/052H01L31/02167H01L31/18C08L23/12B29C48/18B29C48/07C08L2205/03C08L2203/204C08K2003/282C08L2201/08C08L2207/066C08L2205/035C08K2201/005C08K2201/011C08L23/06C08L23/0815C08K3/28C08K5/3435C08K5/132C08L23/0876Y02E10/50Y02P70/50
Inventor 焦华蔡书义
Owner 浙江中聚材料有限公司
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