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A kind of solar backboard and preparation method thereof

A solar back sheet, surface layer technology, applied in chemical instruments and methods, lamination, photovoltaic power generation, etc., can solve the problems of poor cold resistance, low water vapor, low water absorption, etc., to achieve consistent rheology and process selectivity, low Effect of water vapor transmission rate and low saturated water absorption rate

Active Publication Date: 2015-12-09
SUZHOU DUCHAMPS ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since polyester is a polymer that is not resistant to hydrolysis, even with these improved technologies, it is still difficult to meet the moisture and heat aging resistance performance requirements of solar backsheets.
In the Chinese invention patent application CN102365172A, a new type of laminated polyester film added with rutile titanium oxide particles is proposed, but its adhesion with the adjacent EVA film cannot be guaranteed, and the following problems still exist: On the one hand, the fluorine-containing film layer is expensive, on the other hand, there is still a polyester film in the structure, which cannot change the problem that the solar backsheet is not resistant to heat and humidity, has high water absorption, poor electrical insulation, and is easy to embrittle.
To sum up, the polyester film (PET) or polyamide film (PA) used as the substrate material of the photovoltaic backplane so far is difficult to overcome the defects of high water absorption rate and poor moisture and heat aging resistance (brittleness) due to the structural characteristics of the material.
[0005] On the other hand, polypropylene is a general-purpose polymer material, which has excellent electrical insulation, low water absorption, low water vapor transmission rate, etc., but it has poor cold resistance and is brittle at low temperatures.
If it is directly used as a material for solar backsheets, it cannot satisfy its low-temperature impact resistance

Method used

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  • A kind of solar backboard and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A method for preparing a solar backboard, comprising the steps of:

[0039] (1) Add 10 parts of titanium dioxide R960 and 0.3 parts of silane coupling agent KH560 into a high mixer, stir for 30 minutes at a speed of 600 rpm; then add 100 parts of high-density polyethylene 5000S, 0.2 parts of antioxidant four [ ?-(3',5'-di-tert-butyl-4'-hydroxyphenyl) propionate] pentaerythritol ester (Beijing Institute of Addition Auxiliaries, KY1010), 0.2 parts of UV absorber 2-hydroxy-4- N-octyloxybenzophenone (Beijing Institute of Addition Auxiliaries, GW531), 0.1 part of light stabilizer bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate ( Beijing Addition Auxiliary Research Institute, GW480), stirring for 30 minutes, the speed is 600 rpm, and the materials are mixed evenly; the above materials are put into the A screw of the three-layer co-extrusion sheet unit, the diameter of the screw is 60 mm, the long diameter than 33;

[0040](2) Add 10 parts of titanium dioxide R960 (DuPont, U...

Embodiment 2

[0050] A method for preparing a solar backboard, comprising the steps of:

[0051] (1) Add 10 parts of titanium dioxide R960 and 0.3 parts of silane coupling agent KH560 into a high mixer, stir for 30 minutes at a speed of 600 rpm; then add 100 parts of EVA resin 14-2 (Beijing Organic Chemical Factory), 0.2 Part of antioxidant tetrakis[?-(3',5'-di-tert-butyl-4'-hydroxyphenyl)propionate]pentaerythritol ester, 0.2 part of UV absorber 2-hydroxy-4-n-octyloxydi Benzophenone, 0.1 part of light stabilizer bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate, stirred for 30 minutes at a speed of 600 rpm, and mixed the materials evenly; The above materials are put into the A screw of the three-layer co-extrusion sheet unit, the diameter of the screw is 60 mm, and the aspect ratio is 33;

[0052] (2) Add 10 parts of titanium dioxide R960 (DuPont, USA) and 0.3 parts of silane coupling agent KH560 (Danyang Organic Silicon Material Industry Company) into a high mixer, stir for 30 minutes at a ...

Embodiment 3

[0058] A method for preparing a solar backboard, comprising the steps of:

[0059] (1) Add 10 parts of titanium dioxide R960 and 0.3 parts of silane coupling agent KH560 into a high mixer, stir for 30 minutes at a speed of 600 rpm; then add 100 parts of high-density polyethylene 5000S, 0.2 parts of antioxidant four [ ?-(3',5'-di-tert-butyl-4'-hydroxyphenyl) propionate] pentaerythritol ester, 0.2 parts of UV absorber 2-hydroxy-4-n-octyloxybenzophenone, 0.1 parts Light stabilizer bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate, stir for 30 minutes, rotate at 600 rpm, mix the materials evenly; put the above materials into three layers The A screw of the extrusion sheet unit has a screw diameter of 60 mm and a length-to-diameter ratio of 33;

[0060] (2) Add 10 parts of titanium dioxide R960 (DuPont, USA) and 0.3 parts of silane coupling agent KH560 (Danyang Organic Silicon Material Industry Company) into a high mixer, stir for 30 minutes at a speed of 600 rpm; then process Good...

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Abstract

The invention discloses a solar energy back panel. The solar energy back panel comprises an upper surface layer, a core layer and a lower surface layer from top to bottom, wherein the mass ratio of the upper surface layer to the core layer to the lower surface layer is (10-20):(60-80):(10-20), the upper surface layer is a polyethylene resin composition layer, the lower surface layer is a polypropylene resin composition layer, and the core layer is a polyolefin resin composition layer. The new solar energy back panel is developed, and experiments prove that the solar energy back panel has good adhesion and interlayer stripping properties, ageing resistance, high-temperature and damp-heat aging resistance, low saturated water absorptivity, low low-temperature impact resistance, low water vapor permeability and excellent electrical insulating property, and can completely meet the requirement of the back panel of a solar cell module.

Description

technical field [0001] The invention relates to a solar backboard and a preparation method. Background technique [0002] Solar energy is the most abundant renewable energy resource, with unique advantages and huge potential for development and utilization. Solar power generation is a new technology in the way of solar energy utilization. Its power generation principle is to use the quantum effect of semiconductors such as silicon to directly convert the light energy of sunlight into electrical energy. However, if the silicon wafer is directly exposed to the atmosphere, its photoelectric conversion function will be attenuated. Therefore, in the prior art, EVA (ethylene-vinyl acetate copolymer) film is generally used as the packaging material to encapsulate the silicon wafer, and it is bonded with the upper protective material (such as low-iron tempered glass) and the lower protective material backplane. Integral to form a solar cell. Among them, the solar backsheet is a s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/08H01L31/049B32B37/15
CPCY02E10/50
Inventor 罗吉江符书臻
Owner SUZHOU DUCHAMPS ADVANCED MATERIALS CO LTD
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