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A method for preparing polytetrafluoroethylene ordered templates based on a temperature-controllable, pressure-controlled, and friction film-forming device

A technology of polytetrafluoroethylene and film-forming device, which is applied in the direction of flat products, other household appliances, household appliances, etc., can solve the problems of epitaxial growth of difficult polymer materials, etc.

Active Publication Date: 2017-04-12
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the distance between polymer molecular chains is generally larger than the lattice distance of inorganic crystal materials, it is difficult to achieve ordered epitaxial growth of polymer materials on inorganic crystal templates.

Method used

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  • A method for preparing polytetrafluoroethylene ordered templates based on a temperature-controllable, pressure-controlled, and friction film-forming device
  • A method for preparing polytetrafluoroethylene ordered templates based on a temperature-controllable, pressure-controlled, and friction film-forming device
  • A method for preparing polytetrafluoroethylene ordered templates based on a temperature-controllable, pressure-controlled, and friction film-forming device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] This example illustrates that by adjusting temperature, pressure, and speed, polytetrafluoroethylene ordered templates with different surface morphologies can be obtained. Proceed as follows:

[0023] 1) Select rod-shaped PTFE with a diameter of 1 cm and 8 glass slides with a length of 7.6 cm and a width of 2.4 cm, and then ultrasonically clean them with acetone, alcohol, and deionized water, and dry them for later use;

[0024] 2) Set the temperature at 120°C (or 125°C), the pressure at 20kg (or 10kg), and the speed at 0.8mm / s (or 0.6mm / s);

[0025] 3) According to the specific preparation steps (2)-(5) of the PTFE ordered template in the above-mentioned content of the invention;

[0026] 4) Observe the surface morphology of the prepared PTFE template with an atomic force microscope, and observe the influence of temperature, speed, and pressure on the template morphology.

[0027] Typical analysis results are attached figure 2 shown. The image scanning area is 20 μ...

Embodiment 2

[0029] This example illustrates a method for epitaxially growing a P(VDF-TrFE) ferroelectric polymer film based on a PTFE template. Proceed as follows:

[0030] 1) According to the specific preparation steps (1)-(5) of the PTFE ordered template, prepare the PTFE ordered template, wherein: control the temperature of the hot plate at 120°C, apply a pressure of 15kg, and rub the speed of 0.8mm / s;

[0031] 2) Configure a P(VDF-TrFE) butanone solution with a mass concentration of 1% for the preparation of P(VDF-TrFE) thin films;

[0032] 3) Spin-coat the P(VDF-TrFE) solution on the prepared PTFE template with a spin-coating speed of 1000 rpm; the P(VDF-TrFE) film can be formed after the solvent evaporates;

[0033] 4) Spin-coat a layer of P(VDF-TrFE) film on the surface of a clean glass slide as a reference sample, and compare it with the structure of the film formed on the PTFE ordered template;

[0034] 5) Both types of films were annealed at 135°C for 5 hours to increase their...

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Abstract

The invention relates to a method for preparing polytetrafluoroethylene (PTFE) ordered template based on temperature-controllable, pressure-controllable and friction film forming device. The device consists of a numerical control motor, a temperature control module and a pressure control module. Due to the adoption of the device, ordered PTFE templates are prepared on various rigid substrate materials such as glass, ITO and a silicon wafer, and the PTFE templates with different film thicknesses are acquired by controlling the parameters such as temperature, pressure and friction film forming speed; the templates have ordered heights, and can be used for epitaxial growth of various organic semiconductors and ferroelectric polymer films.

Description

technical field [0001] The invention relates to a method for preparing polytetrafluoroethylene (PTFE) ordered templates based on a temperature-controllable, pressure-controlled and friction film-forming device. Background technique [0002] The preparation of high crystallinity films can effectively improve the performance of related devices. For a specific inorganic material, the orderly epitaxial growth of the inorganic material can be realized by selecting an inorganic single crystal substrate that matches the lattice, and a high-quality crystal thin film can be obtained. Since the polymer molecular chain spacing is generally larger than the lattice spacing of inorganic crystal materials, it is difficult to achieve ordered epitaxial growth of polymer materials on inorganic crystal templates. The preparation of high-quality polymer crystal thin films has always been an urgent problem to be solved. Seeking a simple and versatile preparation method for polymer crystal temp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29D7/00
Inventor 朱国栋浮宗元
Owner FUDAN UNIV
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