Nanografi Nanotechnology

PTFE(Polytetrafluoroethylen)  is a white colored thermoplastic which has a high corrosion and heat resistance. Having significantly low friction coefficient makes it an outstanding material in various applications such as seals, O-rings and gasket etc. Also, it is used with other polymers or used as a reinforcing material in composites for special applications. Since it is hydrophobic material, it is also a non-wetting material. PTFE  nanopowder  has a structure that is made up of only fluorine and carbon atoms shown in the Figure 1. Another important property of PTFE is that can be extruded easily which makes it convenient in shaping operations such as insulation of electric wires and unsintered tapes. Properties of PTFE Nanopowder Thermal Properties:  Due to its high crystalline arrangement of carbon and fluorine atoms, PTFE has high thermal stability and has a high melting point of approximately 342°C. This property allows high temperature shaping operations...

In  lithium ion batteries  it is very important to choose a good binder for the electrodes. There are some requirements that the binder has to meet to have durability and long cycle life. The binder should be chemically inert and electrochemically stable to get the best performance from lithium ion batteries. The other important point is that these properties should be gotten by lower amounts of binders. One of these binders that meet the requirements is  Polytetrafluoroethylene (PTFE) Condensed Liquid Binder for Li-ion Battery . PTFE is a synthetic fluoropolymer of tetrafluoroethylene that has numerous applications. PTFE is a fluorocarbon solid, as it is a high-molecular-weight compound consisting of carbon and fluorine. PTFE is hydrophobic material; so, it does not interact with water or water containing substances because of the London forces due to high electronegativity of fluorine.  PTFE binders has a CF 2 -CF 2  unit which demonstrates excellent chem...