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Modified pet base material for solar battery backplane 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 its preparation, can solve the problems of easy peeling off, general connection force, etc., and achieve the characteristics of not easy to break, firm connection, and improved connection force Effect

Active Publication Date: 2016-04-06
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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  • Modified pet base material for solar battery backplane and preparation method thereof

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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-1 -90 parts of 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, and 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-...

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-1 - 30 parts of 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, and 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-...

Embodiment 3

[0052] A modified PET base material for a solar battery 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-1 - 150 parts of 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...

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Abstract

The invention discloses a modified PET base material for a solar battery back plate and a preparation method thereof. The modified PET base material comprises the following components in parts by weight: 30-80 parts of n-butyl acetate, PET? 40-80 parts, 40-100 parts of hexabromocyclododecane, 30-150 parts of 3-methyl-2-buten-1-ol, 100-200 parts of methyl ethyl ketone, 40-80 parts of titanium dioxide, maleic anhydride Branched polypropylene 20-50 parts, stabilizer 40-120 parts, carbonate 20-120 parts, phthalates 30-40 parts. Preparation method: Mix n-butyl acetate, PET, hexabromocyclododecane, 3-methyl-2-buten-1-ol, titanium dioxide, and phthalates evenly, heat to 800-950°C, Slowly add the remaining ingredients, fill with inert gas, and react for 2 to 3 hours; dry and extrude, cool and cast; stretch and set. The n-butyl acetate of the invention obviously improves the link force between PET macromolecules, improves the surface energy and tensile strength of the substrate, and has stronger mechanical properties.

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 p...

Claims

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Application Information

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Patent Type & Authority Patents(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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