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Polyamide backplane for solar energy assembly

A solar back sheet, polyamide technology, applied in photovoltaic power generation, electrical components, climate sustainability, etc., can solve the problem of not meeting the barrier property requirements of solar cell modules to the back sheet, limiting polyamide resin, poor moisture and heat resistance, etc. problems, to achieve the effect of improving water absorption and heat and humidity resistance, excellent adhesion and low cost

Active Publication Date: 2013-04-24
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, polyamide materials have high hygroscopicity due to the structural characteristics of amide groups in the molecular chain ends, so it is difficult for unmodified polyamide resins to overcome the defects of high water absorption and poor heat and humidity resistance, and cannot meet the requirements of solar cells. The barrier requirements of the module on the backplane limit the application of polyamide resin as a backplane material

Method used

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  • Polyamide backplane for solar energy assembly

Examples

Experimental program
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Effect test

Embodiment 1

[0048] A kind of polyamide solar backboard, its preparation method is as follows:

[0049] (1) Preparation of grafted polyethylene PE-MA

[0050] 100 parts (by mass) of LLDPE7042 (Beijing Yanshan Petrochemical Company), 1 part of maleic anhydride (chemical reagent, analytical grade), and 0.05 parts of DCP initiator (Beijing Chemical Industry Research Institute) were measured and mixed uniformly, and put into twin-screw extrusion Melt extrusion granulation in the machine (screw diameter is 75mm, aspect ratio is 33, screw temperature is controlled at 160-220°C, screw speed is controlled at 100 rpm, and the residence time of the material in the screw is 2-4 minutes ); cooling and pelletizing to obtain granular grafted polyethylene PE-MA, the melt flow rate of which is 0.5g / 10min at 190°C / 2.16 kg.

[0051] The LLDPE7042 (Beijing Yanshan Petrochemical Company) is a linear low-density polyethylene with a DSC melting point of 125°C, a melt flow rate of 2g / 10min (190°C, 2.16 kg), ...

Embodiment 2

[0062] A kind of polyamide solar backboard, its preparation method is as follows:

[0063] (1) Preparation of grafted polyethylene PE-MA: see Example 1

[0064] (2) Preparation of core material (modified polyamide resin composition)

[0065] Add 20 parts of polysebacyldecanediamide (PA1010) into the dryer, dry at 80°C for 4 hours, put it into a high mixer, add 80 parts of block copolymerized polypropylene K8303, 40 parts of grafted polyethylene PE-MA, 30 parts of rutile titanium dioxide R960, 0.25 parts of antioxidant tetrakis[?-(3',5'-di-tert-butyl-4'-hydroxyphenyl) propionate] pentaerythritol ester, 0.21 parts of UV absorber 2- Hydroxy-4-n-octyloxybenzophenone, 0.13 parts of light stabilizer bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate, stirring for 30 minutes at 600 rpm per minute, the materials are mixed evenly; then the above materials are put into a twin-screw extruder for melt extrusion, and the materials are cooled, pelletized and dried to become finished products...

Embodiment 3

[0073] A kind of polyamide solar backboard, its preparation method is as follows:

[0074] (1) Preparation of grafted polyethylene PE-MA: see Example 1

[0075] (2) Preparation of core material (modified polyamide resin composition)

[0076] Add 50 parts of polysebacyldecanediamide (PA1010) into the dryer, dry at 80°C for 4 hours and put it into a high mixer, add 50 parts of block copolymerized polypropylene K8303 and 10 parts of grafted polyethylene PE-MA, 50 parts of rutile titanium dioxide R960, 0.32 parts of antioxidant tetrakis [?-(3',5'-di-tert-butyl-4'-hydroxyphenyl) propionate] pentaerythritol ester, 0.12 parts of UV absorber 2- Hydroxy-4-n-octyloxybenzophenone, 0.15 parts of light stabilizer bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate, stirring for 30 minutes at 600 rpm per minute, the materials are mixed evenly; then the above materials are put into a twin-screw extruder for melt extrusion, and the materials are cooled, pelletized and dried to become finished p...

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Abstract

The invention discloses a polyamide backplane for a solar energy assembly. The polyamide backplane comprises an inner surface layer, a core layer, and an outer surface layer from the inside to the outside, wherein by mass, the ratio of inner surface layer to the core layer to the outer surface layer is 10-20:60-80:10-20. The inner surface layer and the outer surface layer are made from a polyamide resin, fillers and additives; the core layer is made from a modified polyamide resin composition; and the modified polyamide resin composition comprises a polyamide resin, grafted polyethylene, a polypropylene resin, fillers and additives. The novel polyamide backplane of the present invention is prepared by using coextrusion technology, the final product obtained has excellent adhesion and interlayer peeling force, anti-aging, particularly anti-damp and heat aging performance, and also has low saturation water absorption, low water vapor transmission and excellent electrical insulating properties, and is easy in preparation and low in cost, suitable for industrial production.

Description

technical field [0001] The invention relates to a solar cell module polymer back sheet, in particular to a polyamide solar back sheet and a preparation method thereof, belonging to the technical field of solar cell module manufacturing. Background technique [0002] The current main energy source of mankind comes from fossil energy, but in the next hundred years or so, fossil energy will be exhausted, and in the process of using fossil energy, a large amount of carbon dioxide will be emitted, causing the deterioration of the earth's climate. Green renewable energy without environmental pollution is the only way to solve human energy challenges and low carbon emissions. Compared with other new energy sources, due to the advantages of the most abundant resources, the most direct energy conversion, the cleanest environmental protection, no fuel, and zero emissions, solar energy has become the easiest, most reliable, and most economical new energy source. [0003] Solar cell po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/06B32B27/18B32B27/34H01L31/048H01L31/18C08L77/00C08L23/12C08L51/06C08F255/02H01L31/049
CPCY02E10/50Y02P70/50
Inventor 罗吉江符书臻
Owner SUZHOU DUCHAMPS ADVANCED MATERIALS CO LTD
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