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Polytetrafluoroethylene film for solar panels, and making method thereof

A polytetrafluoroethylene film, polytetrafluoroethylene technology, used in photovoltaic power generation, electrical components, circuits and other directions, can solve the problem of low light absorption rate of batteries

Inactive Publication Date: 2016-01-20
徐明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention solves the problem of low light absorption rate of the battery existing in the prior art of using polytetrafluoroethylene as the film before solar cell encapsulation, and further provides a polytetrafluoroethylene film for solar panels with high light transmittance and weather resistance and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Mix kerosene, perfluorocarboxylate ammonium salt, sodium perfluorooctanoate, and hexanediol with a mass ratio of 40:1:1:1 in turn to form a composite solvent; in the kerosene, the content of isoparaffins is 80wt%, the content of n-paraffin is 16wt%;

[0038] (2) Add the composite solvent and potassium persulfate in step (1) to the polytetrafluoroethylene powder, stir at a constant temperature of 14°C at a speed of 20r / min for 0.5h, and then in a nitrogen atmosphere at 24°C Cured at constant temperature for 10 hours to obtain cured material;

[0039] Wherein, the purity of the polytetrafluoroethylene powder is 99.9%, the crystallinity≤80%, the particle size is 0.1-0.2 μm, and the molecular weight is 8 million, and the mass ratio of the polytetrafluoroethylene powder to the kerosene in the composite solvent is 20 : 1, the mass ratio of polytetrafluoroethylene powder and potassium persulfate is 1600: 1;

[0040] (3) Carry out compression molding treatment to the clin...

Embodiment 2

[0047] (1) kerosene, perfluorocarboxylate ammonium salt, polyene succinimide, and ethyl acetate are mixed in a mass ratio of 50:2:3:3 in sequence to form a composite solvent; in the kerosene, The content of isoparaffins is 85wt%, and the content of normal paraffins is 12wt%;

[0048](2) Add the composite solvent and potassium persulfate in step (1) to the polytetrafluoroethylene powder, stir at a constant temperature of 10°C at a speed of 50r / min for 0.5h, and then in a nitrogen atmosphere at 32°C Curing at a constant temperature for 12 hours to obtain a cured material;

[0049] Wherein, the purity of the polytetrafluoroethylene powder is 99.9%, the crystallinity≤80%, the particle size is 0.1-0.2 μm, and the molecular weight is 12 million, and the mass ratio of the polytetrafluoroethylene powder to the kerosene in the composite solvent is 20 : 1, the mass ratio of polytetrafluoroethylene powder and potassium persulfate is 1000: 1;

[0050] (3) Carry out compression molding t...

Embodiment 3

[0057] (1) Mix kerosene, ammonium perfluorocarboxylate, sodium perfluorooctane sulfonate, and toluene with a mass ratio of 45:1.5:2:2 in order to form a composite solvent, and then add bis Phenol A type epoxy resin, to obtain a mixture;

[0058] Wherein, the mass ratio of the bisphenol A type epoxy resin and the kerosene in the composite solvent is 1:3; in the kerosene, the content of isoparaffins is 87wt%, and the content of normal paraffins is 9wt%;

[0059] (2) Add the mixture and potassium persulfate in step (1) to the polytetrafluoroethylene powder, stir at a constant temperature of 18°C ​​at a speed of 80r / min for 0.5h, and then in a nitrogen atmosphere at 40°C Cured at constant temperature for 8 hours to obtain the cured material;

[0060] Wherein, the purity of the polytetrafluoroethylene powder is 99.9%, the crystallinity≤80%, the particle size is 0.1-0.2 μm, the molecular weight is 10 million, and the mass ratio of the polytetrafluoroethylene powder to the kerosene ...

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Abstract

The invention provides a polytetrafluoroethylene film for solar panels, and a making method thereof. The method comprises the following steps: uniformly mixing polytetrafluoroethylene powder with a specifically composed composite solvent, carrying out constant temperature slaking, carrying out compression molding, carrying out high temperature heat treatment, rapidly cooling, slicing, and carrying out plasma modification treatment to make the polytetrafluoroethylene film with very high light transmittance. The polytetrafluoroethylene film made in the invention has the advantages of excellent high temperature resistance, excellent wear resistance, excellent weatherability and good mechanical performances, so the polytetrafluoroethylene film for solar panels is suitable for various extreme environments where the solar panels are possibly positioned in, and completely meets demands of severe working environment of the solar panels.

Description

technical field [0001] The invention relates to a polytetrafluoroethylene film for a solar panel and a preparation method of the polytetrafluoroethylene film for a solar panel, belonging to the technical field of polymer materials. technical background [0002] In the context of global warming and deterioration of the ecological environment, looking for alternatives to fossil energy and improving the energy structure have become the focus of attention of all countries. Among many clean energy alternatives, solar energy is considered to be one of the energy sources with the greatest development potential in the future due to its cleanliness, safety, and sufficient resources, and has received great attention and support from countries all over the world. For the development and utilization of solar energy, the most representative is solar cells. In the solar cell family, flexible thin-film solar cells have the advantages of lightness, softness, and thinness, and have better te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/18C08L91/00C08L63/00C08J7/00H01L31/048B29C43/58B29C71/02
CPCY02E10/50
Inventor 徐明
Owner 徐明
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