METHOD FOR DEAGGLOMERATION OF ATOMIZED CARBON NANOTUBES ON A PRE-IMPREGNATED SURFACE.

摘要

The present invention refers to a method for deagglomeration of multiple wall carbon nanotubes (known as MWCNTs) homogeneously atomized on a pre-impregnated surface (woven fibres impregnated with epoxy resin) which are also known as prepregs. The method is based on a sequence of ultrasound and sieving in a wet and dry way. Additionally, said method allows achieving a laminate based on carbon fibre prepreg with epoxy resin (CFRP/epoxy) with carbon nanotubes uniformly distributed, reinforcing the interlaminar region obtaining a laminate of nano-reinforced composite material. The obtained laminate presents an increase in mechanical (8% flexural strength, 12% interlaminar resistance and 12% compressive strength) and viscoelastic properties (18% storage module at 25°C and 19% at ?50° C), requiring lower concentration of carbon nanotubes (0.4% by weight of the laminate) by decreasing the agglomeration thereof. SYSTEM FOR ALOIN EXTRACTION BY THE ACTIVATED CARBON ABSORPTION TECHNIQUE The present invention refers to a system for aloin extraction by a stabilized gel obtained from Aloe Vera. This invention presents the structural design of the system composed of a manifold and seven removable activated carbon cartridges. Each activated carbon cartridge contains a pressure monitoring gauge, as well as inlet and outlet valves; the manifold has a safety valve and a pressure gauge for monitoring its pressure. The extraction system allows removing the aloin according to american standards for the manufacture of Aloe derived products.