Fluoro-ethylene polymer (FPE) membrane for solar battery rear panel and preparation method thereof

A solar cell and backplane technology, applied in the field of solar cells, can solve problems such as poor composite strength, poor interlayer composite strength, and high price, and achieve the effects of good weather resistance, excellent barrier performance, and low price

Inactive Publication Date: 2012-07-04
安徽金兑新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Usually the back film structure is TPT and TPE type, where P is PET, T is fluoroplastic film, and E is generally PE or EVA. The main disadvantage of this type of back sheet is that the interlayer composite strength is poor and the price is expensive.
For example, Chinese Patent No. 200710069782.4 discloses a solar battery backplane composite film and its preparation method, which mainly consists of polyvinyl fluoride film, PET film and EVA coating, and its main disadvantage is poor composite strength between layers
Another example is that Chinese Patent No. 200910169211.3 disclos

Method used

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  • Fluoro-ethylene polymer (FPE) membrane for solar battery rear panel and preparation method thereof

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Embodiment 1

[0023] An FPE film for a solar cell backplane and a preparation method thereof. The FPE film has a three-layer structure, including an outer film layer composed of PVDF / PMMA, a high weather resistance HDPE intermediate film layer, and a high weather resistance LLDPE outer film layer in sequence. FPE The thickness of the film is 25 μm, the thickness of the outer film layer composed of PVDF / PMMA is 5 μm, the thickness of the high weather resistance HDPE middle film layer is 10 μm, and the thickness of the high weather resistance LLDPE outer film layer is 10 μm.

[0024] In the middle film layer of high weather resistance HDPE and the outer film layer of high weather resistance LLDPE, 0.5% of 2,6-tertiary butyl-4-methylphenol and 0.5% of o-hydroxybenzoic acid ester are added and 0.1% of bis-2,2,6,6-tetramethylpiperidinol sebacate, and 0.1-1.0% of silicone leveling agent is added to the FPE film by weight percentage.

[0025] The color of the FPE film of the present invention can ...

Embodiment 2

[0030] An FPE film for a solar cell backplane and a preparation method thereof. The FPE film has a three-layer structure, including an outer film layer composed of PVDF / PMMA, a high weather resistance HDPE intermediate film layer, and a high weather resistance LLDPE outer film layer in sequence. FPE The film thickness is 125 μm, of which the thickness of the outer film layer composed of PVDF / PMMA is 25 μm, the thickness of the high weather resistance HDPE middle film layer is 50 μm, and the thickness of the high weather resistance LLDPE outer film layer is 50 μm.

[0031] In the high weather resistance HDPE middle film layer and the high weather resistance LLDPE outer film layer, calculated by weight percentage, add 0.5% bis (3,5-tertiary butyl-4-hydroxyphenyl) sulfide, 0.5% 2 , 4-dihydroxybenzophenone and 0.1% of bis(2,2,6,6-pentamethyl-4-piperidinyl) sebacate, in the FPE film added 0.1- 1.0% acrylate leveling agent.

[0032] The color of the FPE film of the present inventio...

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Abstract

The invention relates to a fluoro-ethylene polymer (FPE) membrane for a solar battery rear panel, and relates to the technical field of solar batteries. The FPE membrane is characterized by having a three-layer structure and sequentially comprising a surface membrane layer which is made from polyvinylidene fluoride (PVDF)/polymethyl methacrylate (PMMA), a high-weatherability high-density polyethylene (HDPE) intermediate membrane layer and a high-weatherability linear low-density polyethylene (LLDPE) surface membrane layer sequentially, and the thickness of the FPE membrane is 25 to 125 micrometers, wherein the thickness of the PVDF/PMMA is 5 to 25 micrometers, the thickness of the high-weatherability HDPE intermediate membrane layer is 10 to 50 micrometers, and the thickness of the high-weatherability LLDPE surface membrane layer is 10 to 50 micrometers. A preparation method for the FPE membrane is simple and cheap in price, and the FPE membrane has the characteristics of high weatherability, high composite peel strength, good obstruction performance and the like and is an ideal membrane for the solar battery rear panel.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to an FPE film for a solar cell backplane and a preparation method thereof. Background technique [0002] Traditional energy such as oil, coal and other non-renewable resources are decreasing day by day. Energy issues are increasingly becoming a bottleneck restricting the social and economic development of countries around the world. There are still 2 billion people in the world who do not have normal energy supply. Therefore, finding new energy has become a top priority. At this time, the whole world is turning its attention to renewable energy, hoping that renewable energy can change the energy structure of mankind and maintain long-term sustainable development. Among them, solar energy has become the focus of people's attention due to its unique advantages. Abundant solar energy is an important energy source, which is inexhaustible and non-polluting. [0003] The solar cell ...

Claims

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Application Information

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IPC IPC(8): B32B27/08B32B27/18B32B27/32B29B9/06B29C55/28B29C41/32H01L31/048H01L31/18H01L31/049
CPCY02E10/50Y02P70/50
Inventor 朱晓玲
Owner 安徽金兑新材料科技有限公司
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