A kind of backplane for photovoltaic cells and preparation method thereof

A photovoltaic cell and backplane technology, which is applied in circuits, electrical components, and final product manufacturing, etc., can solve the problems of poor barrier properties of PC films and PA films, poor aging resistance of backplanes, and high water absorption, and achieves high Mechanical properties and temperature resistance, superior water vapor barrier properties, the effect of improving strength

Active Publication Date: 2017-01-25
SUZHOU DUCHAMPS ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the above solution uses polyester as the middle layer of the back sheet, which has a high water absorption rate and is easily hydrolyzed, resulting in poor aging resistance of the back sheet
In addition, the above-mentioned PC film and PA film have poor barrier properties and are prone to water vapor penetration.

Method used

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  • A kind of backplane for photovoltaic cells and preparation method thereof
  • A kind of backplane for photovoltaic cells and preparation method thereof
  • A kind of backplane for photovoltaic cells and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Preparation of inner surface material

[0031] Put 100 parts of metallocene polyethylene 1327ED (U.S. Exxon Chemical Company) into a high mixer, add 0.15 parts of ultraviolet light absorber 2-hydroxyl-4-n-octyloxybenzophenone (Beijing Institute of Addition Auxiliaries , GW531), 0.15 parts of light stabilizer bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate (Beijing Institute of Addition Auxiliaries, GW480), stirring for 30 minutes, the speed 650 rpm, mix the materials evenly and put them into the A screw of the three-layer co-extrusion sheet unit, the screw diameter is 60 mm, and the aspect ratio is 33.

[0032] (2) Preparation of middle layer material

[0033] Put 100 parts of polypropylene resin BI750 (Korea Samsung Total Company), 15 parts of grafted polypropylene resin BONDYRAM1001 (Israel Pryron Company) into a high-speed mixer, add 10 parts of cage polysilsesquioxane SH1311 (U.S. Hybrid Plastics company), 0.2 parts of UV absorber 2-hydroxy-4-n-octyloxybenzoph...

Embodiment 2

[0039] (1) Preparation of inner surface material

[0040] Put 100 parts of EVA resin 14-2 (Beijing Organic Chemical Factory) into a high mixer, add 0.15 parts of ultraviolet light absorber 2-hydroxyl-4-n-octyloxybenzophenone, 0.15 parts of light stabilizer bis(2, 2,6,6-Tetramethyl-4-piperidinyl) sebacate, stirred for 30 minutes, the speed was 650 rpm, and the materials were evenly mixed and put into the A screw of the three-layer co-extrusion sheet unit, the screw The diameter is 60 mm and the aspect ratio is 33.

[0041] (2) Preparation of middle layer material

[0042] Put 100 parts of polypropylene resin 50E725 (U.S. DuPont), 15 parts of grafted polypropylene resin FUSABOND 353D (U.S. DuPont) into a high-speed mixer, add 8 parts of cage polysilsesquioxane SH1311 (U.S. HybridPlastics), 0.3 parts of UV absorber 2-hydroxy-4-n-octyloxybenzophenone, 0.3 parts of light stabilizer bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate , 0.3 parts of antioxidant tetrakis[β-(3',5'-di-te...

Embodiment 3

[0048] (1) Preparation of inner surface material

[0049] Put 100 parts of EVA resin 14-2 (Beijing Organic Chemical Factory) into a high mixer, add 0.2 parts of ultraviolet light absorber 2-hydroxyl-4-n-octyloxybenzophenone, 0.2 parts of light stabilizer bis(2, 2,6,6-Tetramethyl-4-piperidinyl) sebacate, stirred for 30 minutes, the speed was 650 rpm, and the materials were evenly mixed and put into the A screw of the three-layer co-extrusion sheet unit, the screw The diameter is 60 mm and the aspect ratio is 33.

[0050] (2) Preparation of middle layer material

[0051] Put 100 parts of polypropylene resin PT182 (Taiwan Fuju Company), 10 parts of grafted polypropylene resin FH118 (Ningbo Nengzhiguang New Material Technology Co., Ltd.) into the high-speed mixer, and add 10 parts of cage polysilsesquioxane SH1311 (U.S. Hybrid Plastics Company), 0.2 parts of UV absorber 2-hydroxyl-4-n-octyloxybenzophenone, 0.2 parts of light stabilizer bis(2,2,6,6-tetramethyl-4-piper Pyridyl) s...

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Abstract

The invention discloses a back plate for a photovoltaic cell, which comprises an inner surface layer, an intermediate layer and an outer surface layer from the inside to the outside, the outer surface layer is made of a modified polyamide resin composition, and the modified polyamide resin composition It includes the following components, polyamide resin, graft polymer resin, functional filler, additive; the functional filler is a layered silicate clay modified by isobutylamine polyhedral oligomerization silsesquioxane; the intermediate The layer is made of a modified polypropylene resin composition; the modified polypropylene resin composition includes the following components: polypropylene resin, grafted polyethylene resin, cage polysilsesquioxane, and additives. The bonding performance between the back sheet and EVA, the aging resistance performance and the water vapor barrier performance of the present invention are all very excellent, can fully meet the service life requirements of the solar battery module, obtain remarkable effects, and have positive practical significance.

Description

technical field [0001] The invention relates to a back plate for photovoltaic cells and a preparation method thereof. Background technique [0002] With the depletion of non-renewable energy sources and increasingly serious environmental problems, solar energy, as a clean energy source, has received unprecedented attention and attention. Solar power generation (also known as photovoltaic power generation) is one of the main ways to effectively utilize solar energy, and as the core component of solar power generation, the reliability of solar cell components directly determines the efficiency of solar power generation. The backsheet is an integral part of solar cell modules, and it should have good mechanical properties, insulation, barrier properties and aging resistance. [0003] At present, the backsheets used at home and abroad are mainly prepared by laminating fluorine-containing films on both sides of polyester films or coating fluorine-containing materials. However, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/049H01L31/18C08L77/00C08L51/06C08K9/06C08K3/34C08K5/549
CPCC08K5/07C08K5/3435C08L23/12C08L77/06H01L31/18C08L23/06C08L51/06C08K5/1345C08K9/04C08K3/346Y02P70/50
Inventor 罗吉江符书臻
Owner SUZHOU DUCHAMPS ADVANCED MATERIALS CO LTD
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