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Solar backboard with high barrier property

A solar back sheet and high barrier technology, applied in the field of solar back sheets, can solve the problems of poor water vapor barrier performance, etc., and achieve the effects of easy operation, simple manufacturing process, and prevention of water vapor intrusion

Pending Publication Date: 2021-10-01
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

Existing crystalline silicon solar modules mainly include tempered glass, EVA glue, cells, backplanes and junction boxes. Among them, the backplane is mainly used to protect solar elements and prevent water vapor, acid gas and corrosive substances from damaging the components. The photoelectric conversion performance is attenuated due to damage to the internal battery sheets, so the protective effect of the backsheet is particularly important. However, the barrier performance of solar backsheets to water vapor in the prior art is poor and needs to be further improved.

Method used

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  • Solar backboard with high barrier property

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A solar backsheet with high barrier properties, comprising a PET substrate layer 1, an adhesive layer 2 arranged on both sides of the PET substrate layer 1 and a barrier layer 3 arranged on the other side of the adhesive layer 2, the PET substrate The thickness of layer 1 is 120 μm; the adhesive layer 2 is an epoxy resin adhesive layer or acrylic resin adhesive layer, and its thickness is 2 μm; the thickness of barrier layer 3 is 15 μm; among them,

[0023] In parts by weight, the barrier layer 3 is prepared from the following raw materials: 45 parts of long carbon chain nylon, 18 parts of nano-scale inorganic powder and 2 parts of heat stabilizer; the preparation method of barrier layer 3 is: put each raw material into a high-speed mixer Inside, the temperature was raised to 380°C, stirred for 2 hours, and then extruded by an extruder to prepare the barrier layer 3; the processing temperature of the extruder was 180°C.

[0024] Among them, the long carbon chain nylon i...

Embodiment 2

[0026] A solar backsheet with high barrier properties, comprising a PET substrate layer 1, an adhesive layer 2 arranged on both sides of the PET substrate layer 1 and a barrier layer 3 arranged on the other side of the adhesive layer 2, the PET substrate The thickness of layer 1 is 180 μm; the adhesive layer 2 is an epoxy resin adhesive layer or acrylic resin adhesive layer, and its thickness is 3 μm; the thickness of barrier layer 3 is 22 μm; among them,

[0027] In parts by weight, the barrier layer 3 is prepared from the following raw materials: 50 parts of long carbon chain nylon, 20 parts of nano-scale inorganic powder and 3 parts of heat stabilizer; the preparation method of the barrier layer 3 is: put each raw material into a high-speed mixer Stir for 4 hours and extrude with an extruder to prepare the barrier layer 3; the processing temperature of the extruder is 185°C.

[0028] Among them, the long carbon chain nylon is PA1212; the average particle size of the nanosca...

Embodiment 3

[0030] A solar backsheet with high barrier properties, comprising a PET substrate layer 1, an adhesive layer 2 arranged on both sides of the PET substrate layer 1 and a barrier layer 3 arranged on the other side of the adhesive layer 2, the PET substrate The thickness of layer 1 is 300 μm; the adhesive layer 2 is an epoxy resin adhesive layer or acrylic resin adhesive layer, and its thickness is 3 μm; the thickness of barrier layer 3 is 24 μm; among them,

[0031] In parts by weight, the barrier layer 3 is prepared from the following raw materials: 40 parts of long carbon chain nylon, 20 parts of nano-scale inorganic powder and 2.5 parts of heat stabilizer; the preparation method of barrier layer 3 is: put each raw material into a high-speed mixer Stir for 4 hours and extrude with an extruder to prepare the barrier layer 3; the processing temperature of the extruder is 190°C.

[0032] Among them, the long carbon chain nylon is PA1212; the average particle size of the nano-scal...

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Abstract

The invention relates to the technical field of solar backboards, in particular to a solar backboard with a high barrier property. The solar backboard with the high barrier property comprises a PET base material layer, bonding layers arranged on two sides of the PET base material layer and a barrier layer arranged on the other side of the bonding layers, wherein the barrier layer is prepared from the following raw materials in parts by weight: 40-60 parts of long carbon chain nylon, 18-22 parts of nanoscale inorganic powder and 2-4 parts of a heat stabilizer, and the weight ratio of the long carbon chain nylon to the nanoscale inorganic powder is (2-3): 1. According to the invention, by selecting the materials of the barrier layer and the ratio of the raw materials, the solar backboard has excellent weather resistance and can effectively prevent the invasion of water vapor. The manufacturing process of the solar backboard is simple and easy to operate.

Description

technical field [0001] The invention relates to the technical field of solar back panels, in particular to a solar back panel with high barrier properties. Background technique [0002] A solar module is a device that converts solar energy directly or intermittently into electrical energy through photoelectric or photochemical effects by absorbing sunlight. Existing crystalline silicon solar modules mainly include tempered glass, EVA glue, cells, backplanes and junction boxes. Among them, the backplane is mainly used to protect solar elements and prevent water vapor, acid gas and corrosive substances from damaging the components. The photoelectric conversion performance is attenuated due to damage to the internal battery sheets, so the protective effect of the backsheet is particularly important. However, the barrier performance of solar backsheets to water vapor in the prior art is poor and needs to be further improved. [0003] The information disclosed in this Background...

Claims

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Application Information

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IPC IPC(8): H01L31/049H01L31/18
CPCH01L31/049H01L31/18Y02P70/50Y02E10/50
Inventor 蔡书义焦华
Owner 浙江中聚材料有限公司
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