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Extrusion type solar backboard and preparing method thereof

A technology of solar backsheet and extrusion type, which is applied in the direction of chemical instruments and methods, other household appliances, electrical components, etc., and can solve the problem of low interlayer adhesion, low low temperature impact resistance, and poor low temperature impact resistance of solar backsheets. sexual issues

Inactive Publication Date: 2017-01-04
SUZHOU DUCHAMPS ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 backboard and preparing method thereof

Examples

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Embodiment 1

[0064] An extruded solar backboard, the backboard has a three-layer structure of inner layer / middle layer / outer layer;

[0065] (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, stirring for 30 minutes, the rotating speed is 600 rev / min, to obtain the filler pretreated by silane coupling agent; 0.923 g / cm 3 , DSC melting point is 110°C, melt flow rate of 190°C / 2.16 kg is 1.8 g / 10 min), 33 parts of homopolypropylene 1300 (Beijing Yanshan Petrochemical Company, its DSC melting point is 160°C, 230°C / 2.16 kg The melt flow rate is 1.5 g / 10 min), 0.1 part of antioxidant tetrakis [β-(3', 5'-di-tert-butyl-4'-hydroxyphenyl) propionate] pentaerythritol ester (Beijing Addition Auxiliaries Research Institute, KY1010), 0.2 parts of UV absorber 2-hydroxy-4-n-octyloxybenzophenone (Beijing Addition Auxiliaries Re...

Embodiment 2

[0070] An extruded solar backboard, the backboard has an inner / outer two-layer structure;

[0071](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 at a speed of 600 rpm to obtain a filler pretreated by a silane coupling agent; then the filler pretreated by the above silane coupling agent was mixed with 34 parts of linear Low-density polyethylene LLDPE7042 (Sinopec Yangzi Petrochemical Co., Ltd., with a density of 0.918 g / cm 3 , DSC melting point is 121°C, melt flow rate of 190°C / 2.16 kg is 2 g / 10 min), 33 parts of random copolymerized polypropylene R370Y (Korean SK Group, its DSC melting point is 164°C, 230°C / 2.16 kg The melt flow rate is 18 g / 10 min), 33 parts of block copolymer polypropyl...

Embodiment 3

[0075] An extruded solar backboard, the backboard has a three-layer structure of inner layer / middle layer / outer layer;

[0076] (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 75 mm, and the aspect ratio is 33;

[0077] (2) Intermediate layer structure: Add 10 par...

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Abstract

The invention discloses an extrusion type solar backboard. The extrusion type solar backboard comprises an inner layer, a middle layer and an outer layer from inside to outside in sequence, wherein the mass ratio of the inner layer to the middle layer to the outer layer is (10-40):(40-80):(10-40). The total thickness of the extrusion type solar backboard is 0.1-0.6 mm. By adding high-rigidity polypropylene to the inner layer, cohesive force between the backboard and an adhesive film is guaranteed, and interlayer cohesive force between the backboard and a polypropylene material of the middle layer is improved; meanwhile, by adding polyethylene or copolymers thereof to the material of the middle layer and the outer layer to enable the middle layer and the outer layer to be well bonded with polyethylene in the material of the inner layer, interlayer cohesive force and low-temperature impact resistance of the backboard are improved.

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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IPC IPC(8): C08L23/06C08L23/12C08L23/14C08L53/00C08L23/08C08K13/06C08K9/06C08K3/22C08K5/134C08K5/132C08K3/34B32B27/06B32B27/08B32B27/18B32B27/32H01L31/049
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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