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Extrusion type solar energy backboard and manufacturing method thereof

A solar back sheet, extrusion-type technology, applied in chemical instruments and methods, other household appliances, electrical components, etc., can solve the problems of low rigidity, reduced mechanical strength of solar back sheets, low low temperature impact strength, etc.

Inactive Publication Date: 2017-10-20
SUZHOU DUCHAMPS ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, practical applications have found that although the inner layer polyethylene and ethylene-vinyl acetate copolymer have a larger melt viscosity, the bonding force between the inner layer of the solar backsheet and the EVA film can be guaranteed, but due to the different properties of the two materials The rigidity is low, and the bonding force with the rigid polypropylene material of the middle layer is weak, resulting in low interlayer bonding force, which in turn reduces the mechanical strength of the solar backsheet; at the same time, the outer layer polypropylene resin has low low temperature impact strength , leading to poor low-temperature impact resistance of solar backsheets

Method used

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  • Extrusion type solar energy backboard and manufacturing method thereof
  • Extrusion type solar energy backboard and manufacturing method thereof
  • Extrusion type solar energy backboard and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0111] An extruded solar backboard, the backboard has a three-layer structure of inner layer / middle layer / outer layer;

[0112] (1) Inner layer structure: add 10 parts of titanium dioxide R960 (DuPont, USA) and 0.3 parts of silane coupling agent 3-aminopropyltriethoxysilane KH550 (Danyang Organic Silicon Material Industry Co., Ltd.) into the high mixer In, stir 30 minutes, rotating speed 600 rev / mins, obtain the filler of silane coupling agent pretreatment; Then the filler of above-mentioned silane coupling agent pretreatment and 67 parts of low-density polyethylene LD100BW (Beijing Yanshan Petrochemical Company, its density is 0.923g / cm 3 , DSC melting point is 110 ℃, melt flow rate of 190 ℃ / 2.16kg is 1.8g / 10min), 33 parts of homopolypropylene 1300 (Beijing Yanshan Petrochemical Company, its DSC melting point is 160 ℃, 230 ℃ / 2.16kg Melt flow rate is 1.5g / 10min), 0.1 part of antioxidant tetrakis [β-(3', 5'-di-tert-butyl-4'-hydroxyphenyl) propionate] pentaerythritol ester (Bei...

Embodiment 2

[0117] An extruded solar backboard, the backboard has an inner / outer two-layer structure;

[0118] (1) Inner layer structure: 10 parts of titanium dioxide R960, 10 parts of talc powder (Lingshou County Shunxin Mineral Products Processing Factory) and 0.3 parts of silane coupling agent 3-glycidyl etheroxypropyltrimethoxysilane KH560 ( Danyang Organosilicon Material Industry Co., Ltd.) was added into a high mixer, stirred for 30 minutes, and the rotating speed was 600 rpm to obtain the filler pretreated by the silane coupling agent; then the filler pretreated by the above silane coupling agent and 34 parts of linear Low-density polyethylene LLDPE7042 (Sinopec Yangzi Petrochemical Co., Ltd., its density is 0.918g / cm 3 , DSC melting point is 121°C, melt flow rate of 190°C / 2.16kg is 2g / 10min), 33 parts of random copolymerized polypropylene R370Y (Korea SK Group, its DSC melting point is 164°C, melting point of 230°C / 2.16kg Bulk flow rate is 18g / 10min), 33 parts of block copolymer ...

Embodiment 3

[0122] An extruded solar backboard, the backboard has a three-layer structure of inner layer / middle layer / outer layer;

[0123] (1) Inner layer structure: 10 parts of titanium dioxide R960, 10 parts of talc powder, 10 parts of sericite powder GA5 (Chuzhou Gray Mining Co., Ltd.) and 0.3 parts of silane coupling agent 3-aminopropyltriethoxysilane Add KH550 into a high mixer, stir for 30 minutes at a speed of 600 rpm to obtain a filler pretreated with a silane coupling agent; Segment copolymerized polypropylene K8303, 0.1 part of antioxidant tetrakis [β-(3', 5'-di-tert-butyl-4'-hydroxyphenyl) propionate] pentaerythritol ester, 0.2 part of ultraviolet absorber 2-hydroxy-4 -N-octyloxybenzophenone, 0.2 parts of light stabilizer bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate, mixed uniformly; The material is put into the A screw of the three-layer co-extrusion sheet unit, the screw diameter is 75mm, and the aspect ratio is 33;

[0124] (2) Intermediate layer structure: Add 10 part...

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Abstract

The invention discloses an extrusion type solar energy backboard. The extrusion type solar energy backboard sequentially comprises an inner layer, a middle layer and an outer layer from inside to outside, wherein mass ratios of the inner layer, the middle layer and the outer layer are respectively 10-40:40-80:10-40, and total thickness of the extrusion type solar energy backboard is 0.1-0.6mm. The extrusion type solar energy backboard is advantaged in that polypropylene having relatively large rigidity is added to the inner layer, not only can adhesion stress between the backboard and a glue film be guaranteed, but also interlayer adhesion force between the inner layer and the middle-layer polypropylene material is further improved, moreover, polyethylene or copolymer of the polyethylene is added between the middle layer and the outer layer material, excellent adhesion with polyethylene of the inner-layer material can be realized, and interlayer adhesion force and low temperature impact strength of the backboard are further improved; the grafting material is added, uniformity and interlayer adhesion stress of products can be improved, surface tension of the backboard after corona processing can be improved, adhesion force between the backboard and sealing silica gel employed during solar energy cell frame sealing can be enhanced, and sealing performance is better.

Description

technical field [0001] The invention relates to an extruded solar backboard 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 cells (also known as photovoltaic cells) directly determines the efficiency of solar power generation. [0003] In the prior art, a solar cell is generally composed of an upper cover plate, an adhesive film, a battery sheet, an adhesive film and a solar back sheet. Among them, the solar backsheet is an important part of the solar cell. On the one hand, it plays the role of structural bonding and encapsulation of the solar cell module, on the ot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/048H01L31/049C08L23/06C08L53/00C08L23/12C08K13/06C08K9/06C08K3/22
CPCB32B27/08B32B27/18B32B27/32B32B2250/242B32B2264/102B32B2264/104B32B2264/12B32B2270/00B32B2307/558B32B2457/12C08K2003/2241C08L23/06C08L23/0815C08L23/12C08L53/00C08L2203/204C08L2205/02C08L2205/03C08L2205/035C08L2207/066H01L31/0481H01L31/049C08K13/06C08K9/06C08K5/1345C08K5/132C08L23/14C08K3/34C08K3/22B32B27/20B32B27/306B32B27/308B32B2250/03B32B2262/101B32B2262/106B32B2264/10B32B2307/206B32B2307/54B32B2307/7246B32B2307/7265B32B2307/732B32B2307/734B32B2307/748B29C48/022B29C48/07B29C48/21C08L23/02C08L51/06Y02E10/50C08K5/544B29K2023/0633B29K2023/12B29K2509/02B29L2031/34B32B2264/107
Inventor 罗吉江符书臻郭海涛
Owner SUZHOU DUCHAMPS ADVANCED MATERIALS CO LTD
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