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Modified polypropylene resin composition and solar energy rear panel made of the same

A solar backsheet and polypropylene resin technology, applied in photovoltaic power generation, electrical components, circuits, etc., can solve the problems of brittleness, poor cold resistance, and inability to meet low-temperature impact resistance, etc., and achieve low cost and simple and easy preparation method Good, excellent interlayer peeling effect

Active Publication Date: 2015-07-15
SUZHOU DUCHAMPS ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its cold resistance is poor, and it is brittle at low temperature. If it is directly used as the material of the solar backplane substrate, it cannot meet its low temperature impact resistance.

Method used

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  • Modified polypropylene resin composition and solar energy rear panel made of the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] A modified polypropylene resin composition, its preparation method is as follows:

[0062] (1) Preparation of grafted polyethylene PE-MA

[0063] 100 parts (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 (Tianjin Aksu Company) were measured and added to the mixer for mixing and homogenization. After homogenizing for two hours, put it into a twin-screw extruder for melt extrusion and granulation; cool and granulate to obtain granular grafted polyethylene PE-MA, and its melt flow rate at 190°C / 2.16kg is 0.5g / 10min. The diameter of the screw is 75mm, the aspect ratio is 33, the temperature of the screw is controlled at 160-220°C, the rotational speed of the screw is controlled at 100 rpm, and the residence time of the material in the screw is 2-4 minutes.

[0064] The LLDPE7042 (Beijing Yanshan Petrochemical Company) is a linear low-density polyethylene w...

Embodiment 2

[0068] A modified polypropylene resin composition, its preparation method is as follows:

[0069] (1) Preparation of grafted polyethylene PE-MA: see Example 1

[0070] (2) Preparation of modified polypropylene resin composition: 75 parts of block copolymerized polypropylene K8303, 25 parts of grafted polyethylene PE-MA, 50 parts of rutile titanium dioxide R960, 0.25 parts of antioxidant tetra[?- (3',5'-di-tert-butyl-4'-hydroxyphenyl) propionate] pentaerythritol ester, 0.2 part of UV absorber 2-hydroxy-4-n-octyloxybenzophenone, 0.1 part of light stabilizer The agent bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate is mixed evenly according to the metering ratio, and then put into the twin-screw extruder for melt extrusion (the twin-screw adopts the exhaust screw, The diameter of the screw is 75 mm, the ratio of length to diameter is 33, the temperature of the screw is controlled at 180-240 ° C, the speed of the screw is controlled at 100 rpm, and the residence time of the mater...

Embodiment 3

[0072] A modified polypropylene resin composition, its preparation method is as follows:

[0073] (1) Preparation of grafted polyethylene PE-MA: see Example 1

[0074] (2) Preparation of modified polypropylene resin composition: 96 parts of polypropylene 1300 and 4 parts of grafted polyethylene PE-MA, 40 parts of rutile titanium dioxide R960, 0.2 parts of antioxidant tetrakis[?-(3' , 5'-di-tert-butyl-4'-hydroxyphenyl) propionate] pentaerythritol ester, 0.25 parts of UV absorber 2-hydroxy-4-n-octyloxybenzophenone, 0.15 parts of light stabilizer bis( 2,2,6,6-tetramethyl-4-piperidinyl) sebacate is mixed evenly and put into a twin-screw extruder for melt extrusion (the twin-screw adopts an exhaust screw, and the diameter of the screw is 75 mm. The aspect ratio is 33, the screw temperature is controlled at 180-240°C, the screw speed is controlled at 100 rpm, and the residence time of the material in the screw is 2-4 minutes); the material is cooled, granulated and dried to become ...

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Abstract

The invention discloses a solar energy rear panel and a preparation method of the solar energy rear panel. The solar energy rear panel comprises an inner surface layer, a core layer and an outer surface layer from inside to outside. By a mass rate, the inner surface layer is 10%-20%, the core layer is 20%-40%, and the outer surface layer is 40%-60%. The inner surface layer and the outer surface layer are made of polyamide resin, fillings and additive, and the core layer is made of the modified polypropylene resin composition. The modified polypropylene resin composition comprises the following components: 100 parts of polypropylene resin, 5-50 parts of graft polyethylene, 0-2.5 parts of additive and 0-100 parts of fillings. Meanwhile, the invention discloses the novel modified polypropylene resin composition used for the solar energy rear panel. Due to the novel modified polypropylene resin composition, a final product obtained has good low temperature resistance and impact resistance, meanwhile anti-aging performance and especially has performance of humidity resistance and resistance to aging. The solar energy rear panel prepared by the novel modified polypropylene resin composition is better than other rear panels in terms of water absorption, water vapor permeability, and interlaminar peeling and has excellent electrical insulating property. A shrinking rate, hot air aging and insulation property required by the solar energy rear panel are met, and the novel modified polypropylene resin composition can be used for solar energy battery components manufacturing .

Description

technical field [0001] The invention relates to a solar cell module polymer back sheet, in particular to a modified polypropylene resin solar back sheet and a preparation method thereof, and belongs to the technical field of solar cell module manufacturing. 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. The solar photovoltaic system is composed of solar battery packs, solar controllers, batteries, etc. The solar battery module is the core part of the solar power generation system, and the solar backplane is the structural packaging material of the solar battery module, which plays an important role in prolonging the service life of the solar battery. It plays a very important role and is an indispensable part of the solar cell module. The material for the preparation of the ba...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/049C08L23/12C08L23/14C08L51/06C08K7/14C08K7/06C08K3/34C08K3/22C08F255/02
CPCY02E10/50
Inventor 罗吉江符书臻
Owner SUZHOU DUCHAMPS ADVANCED MATERIALS CO LTD
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