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Preparation method and application of polytetrafluoroethylene film for unmanned aerial vehicle

A technology of polytetrafluoroethylene film and polytetrafluoroethylene, which is applied in coatings, photovoltaic power generation, electrical components, etc., can solve the problem of low light transmittance of PTFE, difficulty in meeting power supply requirements, and limiting the single working time of drones, etc. problems, to achieve excellent high temperature resistance, increased light transmittance, and good mechanical properties

Active Publication Date: 2015-12-30
DONGJUN NEW ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is still a problem with using PTFE film as the pre-encapsulation film, because the light transmittance of PTFE itself is low, usually only about 40%, which leads to the low light absorption efficiency of photovoltaic cells in the above technology, and it is difficult to meet the power supply demand.
Although among various energy storage devices, lithium batteries have a relatively suitable mass-to-energy ratio and mass-to-power ratio, but for drones, the performance of lithium batteries directly determines its ability to last for drones, which also means It has become a bottleneck that limits the single working time of drones

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Mix kerosene with a mass ratio of 4:0.1 and sodium perfluorooctanoate evenly to form a composite solvent; in the kerosene, the content of isoparaffins is 90wt%, and the content of normal paraffins is 8wt%;

[0031] (2) Add the composite solvent of step (1) into the polytetrafluoroethylene powder, stir at a constant temperature of 14°C at a speed of 20r / min for 0.5h, and then mature in a nitrogen atmosphere at a constant temperature of 24°C for 10h , to get cooked material;

[0032] 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 7 million, and the mass ratio of the polytetrafluoroethylene powder to the kerosene in the composite solvent is 20 : 1;

[0033] (3) Carry out compression molding treatment to the clinker of step (2), the pressure of pre-compression molding is 40MPa, the pre-compression time is 5.5min, and hold pressure 5min;

[0034] (4) heat-treat the fini...

Embodiment 2

[0043] (1) mixing kerosene and toluene with a mass ratio of 5:0.1 to form a composite solvent; in the kerosene, the content of isoparaffins is 86wt%, and the content of normal paraffins is 11wt%;

[0044] (2) Add the composite solvent of 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 mature in a nitrogen atmosphere at a constant temperature of 32°C for 12h , to get cooked material;

[0045] 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 in the composite solvent is 25 : 1;

[0046] (3) Carry out compression molding treatment to the clinker of step (2), the pressure of pre-compression molding is 65MPa, the pre-compression time is 10min, and hold pressure 12.5min;

[0047] (4) heat-treat the finished product of step...

Embodiment 3

[0056] (1) mixing kerosene and polyalkenyl succinimide with a mass ratio of 4.5: 0.1 to form a composite solvent, then adding bisphenol A epoxy resin to the composite solvent to obtain a mixture;

[0057] Wherein, the mass ratio of the bisphenol A type epoxy resin and the kerosene in the composite solvent is 2:5; in the kerosene, the content of isoparaffins is 87wt%, and the content of normal paraffins is 9wt%;

[0058] (2) Add the mixture of 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 mature in a nitrogen atmosphere at a constant temperature of 40°C for 8h , to get cooked material;

[0059] Wherein, the purity of the polytetrafluoroethylene powder is 99.9%, the degree of crystallinity≤80%, the particle size is 0.1-0.2 μm, the molecular weight is 8.5 million, and the mass ratio of the polytetrafluoroethylene powder to the kerosene in the composite solvent is 22.5 : 1;

[0060] (3) Carry out...

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Abstract

The invention provides a preparation method and application of a polytetrafluoroethylene film for an unmanned aerial vehicle. The method comprises the steps that firstly, polytetrafluoroethylene powder and compound solvent with specific components are mixed evenly, constant-temperature curing, compression moulding forming, high-temperature heat treatment, rapid cooling, slicing and plasma modification treatment are sequentially performed, and then the polytetrafluoroethylene film is prepared. The polytetrafluoroethylene film has the very high light transmittance, and the light transmittance can be more than 90.5 percent under 300-1200 nm. In addition, the prepared polytetrafluoroethylene film further has the good high temperature resistance, wear resistance, weather resistance and mechanical property, so that the polytetrafluoroethylene film for the unmanned aerial vehicle can be suitable for various extreme conditions to which the unmanned aerial vehicle is likely to face and completely meet the working environment requirements of the unmanned aerial vehicle.

Description

technical field [0001] The invention relates to a preparation method of a polytetrafluoroethylene film for an unmanned aerial vehicle, and relates to the application of the polytetrafluoroethylene film prepared by the method in a solar cell for an unmanned aerial vehicle, 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 th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/12C08J7/06C08L27/18C08L63/00H01L31/048
CPCY02E10/50
Inventor 郑海军张亦弛夏平程晓龙
Owner DONGJUN NEW ENERGY CO LTD
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