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Method for improving polytetrafluoroethylene adhesive performance and production method of pressure-sensitive adhesive tape

A polytetrafluoroethylene, polytetrafluoroethylene-based technology, applied in the field of improving the bonding performance of polytetrafluoroethylene, can solve the problem that the surface bonding performance of polytetrafluoroethylene cannot be significantly improved, so as to reduce the quantity and curb degradation , Improve the effect of bonding performance

Active Publication Date: 2016-09-14
成都同明创新科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to overcome the deficiency that the surface adhesive performance of polytetrafluoroethylene cannot be significantly improved in the existing treatment methods, and provide a method for improving the adhesive performance of polytetrafluoroethylene

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The method for improving the bonding performance of polytetrafluoroethylene comprises the steps:

[0051] Cleaning step: using at least one of methanol, ethanol, isopropanol, acetone, and toluene to clean the polytetrafluoroethylene substrate by ultrasonic oscillation;

[0052] Atmospheric-pressure low-temperature plasma treatment step: use the atmospheric-pressure glow-based atmospheric-pressure low-temperature plasma technology to treat the cleaned polytetrafluoroethylene substrate.

[0053] In the normal-pressure low-temperature plasma treatment step, an existing plasma method can be used to treat the polytetrafluoroethylene substrate. Since the influence of powder, irregularities and dust is avoided, the bonding ability of PTFE substrates can be improved even with the existing plasma method.

Embodiment 2

[0055] Use polytetrafluoroethylene turning film, the degree of orientation is 2.0, and the film thickness is 0.05mm.

[0056] The method for improving the bonding performance of polytetrafluoroethylene comprises the steps:

[0057] Cleaning steps: use ethanol to clean the polytetrafluoroethylene substrate by ultrasonic vibration, and the cleaning time is 2 minutes;

[0058] Atmospheric pressure low-temperature plasma treatment steps: use "a low-temperature plasma system based on atmospheric pressure glow" disclosed in the invention patent with the application number "200910058641.1" to carry out surface treatment on the cleaned PTFE substrate, and the discharge parameters and processing conditions are as follows.

[0059] Table 1

[0060] discharge voltage

Discharge current

discharge frequency

processing time

9.5kV

1.1mA / cm 2

15kHz

25S

[0061] The working gas is argon, the flow rate of the working gas is 20L / min, and the workin...

Embodiment 3

[0064] Use polytetrafluoroethylene turning film, the degree of orientation is 2.0, and the film thickness is 0.05mm.

[0065] Cleaning steps: use ethanol to clean the polytetrafluoroethylene substrate by ultrasonic vibration, and the cleaning time is 2 minutes;

[0066] Atmospheric pressure low-temperature plasma treatment steps: use "a low-temperature plasma system based on atmospheric pressure glow" disclosed in the invention patent with the application number "200910058641.1" to carry out surface treatment on the cleaned PTFE substrate, and the discharge parameters and processing conditions are as follows.

[0067] Table 2

[0068] discharge voltage

Discharge current

discharge frequency

processing time

9.5kV

1.2mA / cm 2

15kHz

25S

[0069] The working gas is argon, the flow rate of the working gas is 20L / min, and the working gas is mixed with 1% oxygen by mass. Air impurities are mixed in the gas in the discharge chamber, and t...

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PUM

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Abstract

The invention discloses a method for improving a teflon adhesive property. The method comprises the following steps of washing, wherein at least one kind of methyl alcohol, methyl alcohol, isopropanol, acetone and methylbenzene is adopted, and teflon base materials are washed through ultrasonic oscillation; normal-pressure low-temperature plasma processing, wherein a normal-pressure low-temperature plasma technology based on barometric pressure glow is used for carrying out the normal-pressure low-temperature plasma processing on the washed teflon base materials. The invention further discloses a method for producing pressure-sensitive adhesive tape. The method for improving the teflon adhesive property has the advantages that the adhesive property of the teflon base materials can be effectively improved, the contact angle of the surfaces of the processed materials is 86 degrees, and the adhesive strength is larger than 5.0MPa.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a method for improving the bonding performance of polytetrafluoroethylene and a production method for pressure-sensitive adhesive tapes. Background technique [0002] Polytetrafluoroethylene (PTFE) is an engineering plastic with excellent performance. It is a high molecular compound polymerized from tetrafluoroethylene monomer. Chemical stability, corrosion resistance, self-lubrication and high temperature resistance. The reason why PTFE has the above properties is that the high-energy C-F bonds in the PTFE molecule are completely symmetrically arranged, and the molecular configuration has a helical structure, and the C-C main bond is completely surrounded by a shell composed of fluorine atoms. But it is precisely because of this structure that PTFE is difficult to bond with other materials. [0003] In order to solve this contradiction, people try to improve the surface energy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/12C08J7/12C09J7/02
Inventor 宋红兵
Owner 成都同明创新科技有限公司
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