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4944results about "Non-conductive material with dispersed conductive material" patented technology

Fluoropolymer binders for carbon nanotube-based transparent conductive coatings

This invention relates to flexible, transparent and conductive coatings and films formed using carbon nanotubes (CNT) and, in particular, single wall carbon nanotubes, with polymer binders. Preferably, coatings and films are formed from carbon nanotubes applied to transparent substrates forming one or multiple conductive layers at nanometer level of thickness. Polymer binders are applied to the CNT network coating having an open structure to provide protection through infiltration. This provides for enhancement of properties such as moisture resistance, thermal resistance, abrasion resistance and interfacial adhesion. Polymers may be thermoplastics or thermosets, or a combination thereof. Polymers may also be insulative or inherently electrical conductive, or any combination of both. Polymers may comprise single or multiple layers as a basecoat underneath a CNT coating, or a topcoat above a CNT coating, or combination of the basecoat and the topcoat forming a sandwich structure. A fluoropolymer containing binder, which is a solution of one fluoropolymer or a blend of fluoropolymers, which may be formulated with additives, is applied onto a carbon nanotube-based transparent conductive coating at nanometer level of thickness on a clear substrate such as PET and glass. The fluoropolymers or blend can be either semi-crystalline (with low level of crystallinity) or amorphous, preferably to be amorphous with low refraction index. Binder coating thickness can be adjusted by changing binder concentration, coating speed and/or other process conditions. This binder coating significantly improves optical transparency, and also maintain or increases conductivity of the CNT-based coating. With other benefits such as abrasion, thermal and moisture resistance, this binder coating and the resulting products is used for display and electronic applications.

Highly filled polymer composition with improved properties

A highly filled polymer composition with improved properties comprising: a continuous matrix material; a filler material in an amount of 10 to 80 wt. % of said composition; a polymer plasticizer dispersed in said continuous matrix material in an amount of 0.5 to 15 wt. % of said filler; a filler coating material which coats said filler particles in the form of a continuous coating layer thus forming coated filler particles; a diffusion zone around said coated filler particles where said filler coating and said continuous matrix material are mutually diffused into one another wherein said filler coating material is distributed with concentration decreasing in the direction outward from said continuous coating layer. Provided also is a method of preparing the aforementioned composition which guarantees that during extrusion or similar treatment the filler particles are coated with a continuous layer of the filler coating material and that the aforementioned diffusion zone is formed around the coated filler particles. In the manufacture of various products such as pipes, sheets, profiles, etc., the composition of the invention combines high deformation capacity with sufficient strength. Furthermore, the composition of the invention possesses high anticorrosive properties, has low shrinkage, and has high adhesion to metals, wood, plastics, etc.
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