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 prepara

Method used

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

Examples

Experimental program
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Example Embodiment

[0034] Example 1

[0035] The PTFE dispersion resin is sieved to remove agglomerates and oversized particles, and then weighed 600g, adding naphtha as a booster, mixing in a round large-mouth bottle, and rolling and stirring after sealing the bottle mouth Mix for 15 minutes, leave the mixed resin to mature for 8 hours at a curing temperature of 45℃; pre-form on the press, and make a cylindrical resin mass on the press to remove air and reduce the volume. The pre-forming pressure is 1.5MPa , The pressure holding time is 1 minute, and the pressing machine is used to push into a rod, the pressing compression ratio is 25, the pressing temperature is 50 ℃, and the pressing speed is 1 m / min; calendering film: calender roller diameter is 20 cm, the width of the finished belt is 20 cm, the roller spacing is 0.05 mm, the roller temperature is 40°C, and the rolling speed is 15 m / min. Finally, the film is stretched and shaped under heating. After unidirectional stretching parallel to the f...

Example Embodiment

[0037] Example 2

[0038] The PTFE dispersion resin is sieved to remove agglomerates and oversized particles, then weigh 600g, add 140g of perfluorooctane and mix, mix in a round large-mouth bottle, seal the mouth of the bottle and perform rolling mixing For 15 minutes, the mixed resin is allowed to mature for 10 hours at a temperature of 50°C. Preform on the press, and make a cylindrical resin mass on the press to remove air and reduce the volume. The preform pressure is 1.5MPa, and the pressure holding time is 1 minute. Use the press to push into a rod and push The compression ratio is 80, the pressing temperature is 60℃, and the pressing speed is 3 m / min; calendering film formation: the calender roller diameter is 28 cm, the belt width is 70 cm, and the roller spacing is 0.2 mm. The temperature is 70℃, and the calendering speed is 15m / min. Finally, it is stretched and shaped, and the prepared film is stretched under heating conditions. After unidirectional stretching is perpe...

Example Embodiment

[0040] Example 3

[0041] The PTFE dispersion resin is sieved to remove agglomerates and oversized particles, then weigh 600g, add 90g of perfluoro-n-heptane and mix, mix in a round large-mouth bottle, seal the mouth of the bottle and perform rolling stirring Mix for 15 minutes, leave the mixed resin to mature for 5 hours at a curing temperature of 50°C; preform on the press, and make a cylindrical resin mass on the press to remove air and reduce the volume. The preform pressure is 1.5MPa , The holding time is 1 minute, and the pressing machine is used to push into a rod, the pressing compression ratio is 60, the pressing temperature is 70 ℃, and the pressing speed is 2 m / min; calendering film: the diameter of the calender roller is 24 cm, the width of the finished belt is 40 cm, the distance between the rollers is 0.12 mm, the temperature of the rollers is 50 ℃, and the rolling speed is 15 m / min. Finally, the film is stretched and shaped under heating. After biaxial stretching ...

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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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