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Solar battery backboard modified PET (polyethylene glycol terephthalate) base material and preparation method thereof

A technology for solar cells and back sheets, which is applied in the field of modified PET substrates for solar cell back sheets and their preparation, can solve the problems of general connection force, easy peeling and falling off, etc. Effect

Active Publication Date: 2015-03-11
谭家湾遗址公园运营管理(桐乡乌镇)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the connection force of this invention is general, and it is easy to peel off

Method used

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  • Solar battery backboard modified PET (polyethylene glycol terephthalate) base material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A modified PET base material for a solar battery back sheet, comprising the following components in parts by weight: 50 parts of n-butyl acetate, 60 parts of PET, 70 parts of hexabromocyclododecane, 3-methyl-2-butene- 90 parts of 1-alcohol, 150 parts of methyl ethyl ketone, 60 parts of titanium dioxide, 40 parts of maleic anhydride grafted polypropylene, 80 parts of stabilizer, 70 parts of carbonate, 35 parts of phthalates.

[0029] The particle size of titanium dioxide is 100 to 200 μm.

[0030] The stabilizer is a mixture of diphenylthiourea and 2-phenylindole with a mass ratio of 1:1.

[0031] The carbonate is sodium carbonate.

[0032] Phthalates are a mixture of diisobutyl phthalate, dimethyl phthalate, and diethyl phthalate in a mass ratio of 1:1:1.

[0033] The preparation method of the above-mentioned modified PET base material for the solar battery back sheet comprises the following steps:

[0034] (1) Mix n-butyl acetate, PET, hexabromocyclododecane, 3-meth...

Embodiment 2

[0040]A modified PET base material for a solar battery back sheet, comprising the following components in parts by weight: 30 parts of n-butyl acetate, 40 parts of PET, 40 parts of hexabromocyclododecane, 3-methyl-2-butene- 30 parts of 1-alcohol, 100 parts of methyl ethyl ketone, 40 parts of titanium dioxide, 20 parts of maleic anhydride grafted polypropylene, 40 parts of stabilizer, 20 parts of carbonate, 30 parts of phthalates.

[0041] The particle size of titanium dioxide is 100 to 200 μm.

[0042] The stabilizer is thiolauric anhydride.

[0043] The carbonate is potassium carbonate.

[0044] Phthalates are a mixture of diethyl phthalate and diisononyl phthalate in a mass ratio of 1:2.

[0045] The preparation method of the above-mentioned modified PET base material for the solar battery back sheet comprises the following steps:

[0046] (1) Mix n-butyl acetate, PET, hexabromocyclododecane, 3-methyl-2-buten-1-ol, titanium dioxide and phthalates evenly, heat to 800-950°C...

Embodiment 3

[0052] A modified PET base material for a solar cell back sheet, comprising the following components in parts by weight: 80 parts of n-butyl acetate, 80 parts of PET, 100 parts of hexabromocyclododecane, 3-methyl-2-butene- 150 parts of 1-alcohol, 200 parts of methyl ethyl ketone, 80 parts of titanium dioxide, 50 parts of maleic anhydride grafted polypropylene, 120 parts of stabilizer, 120 parts of carbonate, 40 parts of phthalates.

[0053] The particle size of titanium dioxide is 100 to 200 μm.

[0054] The stabilizer is a mixture of trimethylolpropane and thiolauric anhydride in a mass ratio of 2:5.

[0055] The carbonate is calcium carbonate.

[0056] The phthalates are diethyl phthalate.

[0057] The preparation method of the above-mentioned modified PET base material for the solar battery back sheet comprises the following steps:

[0058] (1) Mix n-butyl acetate, PET, hexabromocyclododecane, 3-methyl-2-buten-1-ol, titanium dioxide and phthalates evenly, heat to 800-950...

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Abstract

The invention discloses a solar battery backboard modified PET (polyethylene glycol terephthalate) base material and a preparation method thereof, and the modified PET base material comprises the following components by weight: 30-80 parts of n-butyl acetate, 40-80 parts of PET, 40-100 parts of hexabromocyclododecane, 30-150 parts of 3-methyl-2-butene-1-ol, 100-200 parts of methyl ethyl ketone, 40-80 parts of titanium dioxide, 20-50 parts of maleic anhydride grafted polypropylene, 40-120 parts of a stabilizer, 20-120 parts of carbonate and 30-40 parts of phthalic acid ester. The preparation method is as follows: mixing uniformly the n-butyl acetate, the PET, the hexabromocyclododecane, the 3-methyl-2-butene-1-ol, the titanium dioxide and the phthalic acid ester, heating to 800 to 950 DEG C, and slowly adding the remaining components, filling with an inert gas, reacting for 2-3H; drying, squeezing, cooling and casting into a sheet; stretching and forming. The n-butyl acetate significantly increases link force among PET macromolecules, so that the substrate surface energy and tensile strength are improved, and the mechanical property is stronger.

Description

technical field [0001] The invention relates to the field of solar battery back sheets, in particular to a modified PET base material for solar battery back sheets and a preparation method thereof. Background technique [0002] The solar cell back film is mainly divided into two categories: fluorine-containing back film and fluorine-free back film. Among them, the fluorine-containing back film is divided into double-sided fluorine-containing (such as TPT) and single-sided fluorine-containing (such as TPE); while the fluorine-free back film is mostly made by bonding multiple layers of PET with an adhesive. At present, the service requirement of commercial crystalline silicon solar cell modules is 25 years, and the back film, as a photovoltaic packaging material directly in contact with the external environment in a large area, should have excellent long-term aging resistance (damp heat, dry heat, ultraviolet), electrical resistance Insulation, water vapor barrier and other ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L51/06C08K13/02C08K5/101C08K3/26C08K3/22C08K5/12C08K5/02C08K5/07
Inventor 黄新东刘天人
Owner 谭家湾遗址公园运营管理(桐乡乌镇)有限公司
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