Hydro-oleophobic carbon nanotube-polytetrafluoroethylene valve sealing ring
A technology of polytetrafluoroethylene and valve sealing, applied in the field of valve sealing rings, can solve the problems of difficult molding and secondary processing, large linear expansion coefficient, small water absorption, etc., and achieve good extrusion deformation resistance and excellent wear resistance Performance, good installation resilience effect
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[0021] An amphiphobic carbon nano-polytetrafluoroethylene valve sealing ring is prepared from the following components by weight: 100 parts of polytetrafluoroethylene, 5 parts of carbon nanotubes, 70 parts of tetrahydrofuran, 1,1-di 2 parts of phenylethylene, 0.2 parts of sec-butyllithium, 2 parts of hexane, 2 parts of (3-(triisopropoxysilyl)) propylene methacrylate, methacrylic acid (heptadecafluorooctyl) 2 parts of ethylene ester, 45 parts of trifluorotoluene, 8 parts of concentrated hydrochloric acid, 20 parts of 60-70% sodium hypochlorite, 20 parts of EDTA, 40 parts of ammonia water, 80 parts of absolute ethanol, 80 parts of absolute methanol, 3 parts of barium sulfate , 1 part of molybdenum disulfide, 3 parts of silane coupling agent kh550, 10 parts of ammonium chloride, 30 parts of urea, and 60 parts of water.
[0022] An amphiphobic carbon nano-polytetrafluoroethylene valve sealing ring is characterized in that its preparation method comprises the steps:
[0023] (1) A...
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