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Poe composite backside material for photovoltaic module packaging

A technology of photovoltaic module packaging and backside materials, applied in photovoltaic power generation, electrical components, semiconductor devices, etc., can solve the problems of loss of physical properties, and the weather resistance of fluorine-free backsheets is not as good as that of fluorine-containing backsheets, achieving comprehensive cost savings and excellent performance. Aging resistance, the effect of improving performance and life

Active Publication Date: 2017-12-29
ZHEJIANG ZHENGXIN PHOTOVOLTAIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once the sealing additives are consumed, the hydrolysis rate will rise rapidly to break the molecular chain of PET and lose its physical properties. Therefore, the weather resistance of fluorine-free backsheets is not as good as that of fluorine-containing backsheets.

Method used

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  • Poe composite backside material for photovoltaic module packaging
  • Poe composite backside material for photovoltaic module packaging

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

0.066％

[0027] Mix the above materials evenly, heat and extrude a film-like product with a thickness of 0.1 mm, which is a transparent POE film with a light transmittance of 90.6%.

[0028] Element

Proportion

POE resin (melt flow index measured at 190°C is 40g / 10min, melting point is 100°C)

85％

tert-Amyl peroxy-2-ethylhexanoate

1.3％

Triallyl isocyanurate (TAIC)

0.66％

KH-550

0.26％

TINUVIN 622

0.066％

Mixture of Titanium Dioxide and Aluminum Oxide

10％

[0029] Mix the above materials evenly, heat and extrude a white film-like product with a thickness of 0.1mm, which is the opaque POE film.

[0030] Using a 0.015mm PVDF film, a layer of transparent POE film, a layer of opaque POE film and a layer of PVDF film are integrated by heating and rolling to obtain a 0.215mm thick POE composite back material.

Embodiment 2

0.39％

[0033] Mix the above materials evenly, heat and extrude a film-like product with a thickness of 0.3 mm, which is a transparent POE film with a light transmittance of 90.7%.

[0034] Element

Proportion

POE resin (melt flow index measured at 190°C is 5g / 10min, melting point is 60°C)

80％

tert-butyl peroxybenzoate (TBPB)

1.97％

Triallyl cyanurate (TAC)

1.3％

A-174

1.3％

TINUVIN 770

0.39％

Mixture of Titanium Dioxide and Aluminum Oxide

15％

[0035] Mix the above materials evenly, heat and extrude a white film-like product with a thickness of 0.3mm, which is the opaque POE film.

[0036] Using a 0.03mm PVF film, a layer of transparent POE film, a layer of opaque POE film and a layer of PVDF film are integrated by heating and rolling to obtain a 0.53mm thick POE composite back material.

Embodiment 3

0.2％

[0039] Mix the above materials evenly, heat and extrude a film-like product with a thickness of 0.2 mm, which is a transparent POE film with a light transmittance of 90.7%.

[0040] Element

Proportion

POE resin (melt flow index measured at 190°C is 5g / 10min, melting point is 60°C)

82％

1,1-bis(tert-butylperoxy)cyclohexane

1.97％

Trimethylolpropane Trimethacrylate (TMPTMA)

1.3％

Z-6030

1.3％

TINUVIN 2908

0.39％

Mixture of titanium dioxide, alumina and silica

13％

[0041] Mix the above materials evenly, heat and extrude a black film-like product with a thickness of 0.2mm, which is the opaque POE film.

[0042] Using a 0.02mm PVF film, a layer of transparent POE film, a layer of opaque POE film and a layer of PVDF film are integrated by heating and rolling to obtain a 0.42mm thick POE composite back material.

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Abstract

The invention discloses a POE composite back material for photovoltaic module packaging. The back material is composed of a transparent POE film, an opaque POE film and a fluorine film in sequence. The transparent POE film consists of 95% POE resin and 5% modified additives Composition, the opaque POE film is composed of 80-85% POE resin, 10-15% barrier and reinforcing materials and 5% modified additives. The opaque POE film can be white, off-white or black. The POE composite back material for photovoltaic module packaging provided by the invention has excellent performance, meets the requirements for the back material, is of great significance to the solar energy industry, and has broad application prospects.

Description

technical field [0001] The invention belongs to the field of solar photovoltaic modules, and in particular relates to a POE composite back material for packaging photovoltaic modules. Background technique [0002] With the increasing cost of carbon in the future, it is an inevitable trend to replace traditional fossil energy with new energy represented by solar energy. At present, the governments of various countries have increased investment in the solar photovoltaic industry in terms of capital, technology and policies, and regard the development of the solar photovoltaic industry as one of their national energy security and sustainable development strategic goals. [0003] In solar cell modules, the back sheet has always been the most important material other than silicon wafers. The current back sheet products are mainly divided into two types: fluorine-containing and fluorine-free back sheets. Fluorine materials in fluorine-containing backsheets are generally PVF (poly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/048
CPCY02E10/50
Inventor 李正茂李斐斐
Owner ZHEJIANG ZHENGXIN PHOTOVOLTAIC TECH
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