Abstract:
PROBLEM TO BE SOLVED: To provide a method for reducing monomer loss during curing of a high internal phase emulsion. SOLUTION: The method includes steps of: forming a water-in-oil emulsion; curing the monomer component in the emulsion in a saturated steam environment; and forming a saturated polymeric foam material. The water-in-oil emulsion has an aqueous phase and an oil phase comprising a monomer component. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
A method for polymerizing an open-cell foam including exposing an emulsion comprising a photoinitiator to an Ultraviolet light source, partially polymerizing the top surface of the emulsion, and moving the partially polymerized emulsion to a second polymerization stage.
Abstract:
An RF inductor such as a Tesla antenna splices nanotube ends together to form a nanostructure in a polymer foam matrix. High Internal Phase Emulsion (HIPE) is gently sheared and stretched in a reactor comprising opposed coaxial counter-rotating impellers, which parallel-align polymer chains and also carbon nanotubes mixed with the oil phase. Stretching and forced convection prevent the auto-acceleration effect. Batch and continuous processes are disclosed. In the batch process, a fractal radial array of coherent vortices in the HIPE is preserved when the HIPE polymerizes, and helical nanostructures around these vortices are spliced by microhammering into longer helices. A disk radial filter produced by the batch process has improved radial flux from edge to center due to its area-preserving radial vascular network. In the continuous process, strips of HIPE are pulled from the periphery of the reactor continuously and post-treated by an RF inductor to produce cured conductive foam.
Abstract:
A method for continuous High Internal Phase Emulsion (HIPE) foam production. A HIPE is produced then extruded onto a carrier sheet positioned on a belt surface.
Abstract:
The invention relates to a porous polymeric monolith based on a polymerised high internal phase emulsion (polyHIPE) which is hypercrosslinked, and to the preparation and use thereof, preferably as gas storage material.