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Supramolecular perfluorinated gel and preparation method thereof

A perfluorinated gel and supramolecular technology, applied in coatings and other directions, can solve the problems of complicated calendering operation process and no antibacterial properties, and achieve the effect of good ductility, soft and wear-resistant material, and pollution reduction.

Active Publication Date: 2020-10-20
SUZHOU TIANLAN BIOMATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above-mentioned problems existing in the prior art, the present invention provides a supramolecular perfluorogel and its preparation method, which can effectively solve the existing The calendering operation process of the gel is complicated and has no antibacterial properties

Method used

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  • Supramolecular perfluorinated gel and preparation method thereof
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  • Supramolecular perfluorinated gel and preparation method thereof

Examples

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Embodiment 1

[0035] Sieve the polytetrafluoroethylene dispersed resin, remove the agglomerates and oversized particles, then weigh 600g, add naphtha as a propellant, mix in a round jar, seal the bottle mouth and roll and stir Mix for 15 minutes, place the mixed resin to mature for 8 hours, and the curing temperature is 45°C; preform on the press, and make a cylindrical resin mass on the press to remove air and reduce volume, and the preform pressure is 1.5MPa , the holding time is 1 minute, push into a rod with a pusher, the pushing compression ratio is 25, the pushing temperature is 50°C, and the pushing speed is 1 m / min; calendering film: the diameter of the roller of the calender is 20 cm, the width of the strip is 20 cm, the distance between the rollers is 0.05 mm, the temperature of the rollers is 40 ° C, and the calendering speed is 15 m / min; finally stretching and setting, the prepared film is stretched under heating conditions, After one-way stretching parallel to the film calender...

Embodiment 2

[0038]Sieve the polytetrafluoroethylene dispersion resin, remove the agglomerates and oversized particles, then weigh 600g, add 140g perfluorooctane to mix, mix in a round jar, seal the bottle mouth and roll and mix After 15 minutes, the mixed resin was left to mature for 10 hours, and the curing temperature was 50°C. Preform on a press, and make a cylindrical resin mass on the press to remove air and reduce volume. The preform pressure is 1.5MPa, and the holding time is 1 minute. Push it into a rod with a pusher, push it The compression ratio is 80, the pushing temperature is 60°C, and the pushing speed is 3 m / min; calendering film formation: the diameter of the calender roll is 28 cm, the width of the strip is 70 cm, and the distance between the rolls is 0.2 mm. The temperature is 70°C, and the calendering speed is 15 m / min; the final stretching and setting, under heating conditions, the prepared film is stretched, and after stretching in one direction perpendicular to the f...

Embodiment 3

[0041] Sieve the polytetrafluoroethylene dispersed resin, remove the agglomerates and oversized particles, then weigh 600g, add 90g of perfluoro-n-heptane to mix, mix in a round jar, seal the bottle mouth and roll and stir Mix for 15 minutes, place the mixed resin to mature for 5 hours, the curing temperature is 50°C; preform on the press, make a cylindrical resin mass on the press to remove air, reduce the volume, and the preform pressure is 1.5MPa , the holding time is 1 minute, push into a rod with a pusher, the pushing compression ratio is 60, the pushing temperature is 70°C, and the pushing speed is 2 m / min; calendering film: the diameter of the roller of the calender is 24 cm, the strip width is 40 cm, the distance between the rollers is 0.12 mm, the temperature of the rollers is 50 ° C, and the calendering speed is 15 m / min; finally stretching and setting, the prepared film is stretched under heating conditions, After biaxial stretching (it is stretching in one directio...

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Abstract

The invention provides supramolecular perfluorinated gel and a preparation method thereof. The preparation method comprises the following steps: taking an anisotropic porous polytetrafluoroethylene film, dropwise adding a perfluoro solution to the surface of the anisotropic porous polytetrafluoroethylene film, observing the transparency of the anisotropic porous polytetrafluoroethylene film at thesame time, stopping dropwise addition when the transparency of the anisotropic porous polytetrafluoroethylene film does not change any more, and then subjecting the anisotropic porous polytetrafluoroethylene film to standing for 6-72 hours to obtain the porous polytetrafluoroethylene film. The gel can effectively solve the problems of complex calendering operation process and no antibacterial property of existing gels.

Description

technical field [0001] The invention belongs to the technical field of gel preparation, and in particular relates to a supramolecular perfluorogel and a preparation method thereof. Background technique [0002] One of the reasons for the global spread of the new coronavirus (COVID-19) is that the virus can survive and stay on most surfaces, and the human body can be infected by touching objects with the new coronavirus. The current sterilization and disinfection generally uses disinfectants such as alcohol or disinfectants to be sprayed on the surface of objects, but there is a disadvantage, that is, the effect of disinfectants will disappear after a period of time, and viruses will continue to be attached to objects. Covering a layer of film with antibacterial and disinfecting effect can achieve the purpose of sterilization and disinfection for a long time. [0003] Unlike polymer sols, polymer gels must contain a certain amount of cross-linking points in order to achieve ...

Claims

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Application Information

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IPC IPC(8): C08J9/36C08J5/18C08L27/18
CPCC08J9/36C08J5/18C08J2327/18
Inventor 崔家喜郑宜君杨莉吴倩
Owner SUZHOU TIANLAN BIOMATERIAL TECH CO LTD
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