Innovations for industrial applications
1. shielding paints, coating materials, as electrically conductive and/or electrically capacitive (storing electrical charge), as well as paints and/or coatings/dispersions reflecting high-frequency radiation
2. paint/dispersion/coating, based on protic or organic solvents
3. paint/dispersion/coating material which realizes the reflection of electromagnetic waves from 9 kHz to 100 GHz.
4. paint/dispersion/coating material which realizes the conductivity of low-frequency currents/fields – and the derivation of such.
5. painting/dispersion/coating material which by means of graphene bridges (elongated flat cluster chains of graphene) within the emulsion/dispersion itself result in an effective surface (functional surface), wherein the effective surface (functional surface) is that surface – which is capable of being electrically conductive, electrically capacitive (storing electrical charge) – is meant. The effective areas (functional areas) created by graphene bridges thus supplement the effective areas (functional areas) of the metallic particles and/or carbon particles and/or carbon fibres – and thus improve the electrical charge storage.
Fig. 1 shows a magnified and simplified diagram from above – (top view) of particles and their interspace in a simple binder emulsion/dispersion.
(1) shows a particle of metallic particles and/or carbon particles.
(2) shows the particle interstices with binder.
(3) shows a single (separate) particle without contact to other particles.
Fig. 2 shows an even larger simplified representation (zoom).
in top view (top view), of particles and their interspace in a binder emulsion/dispersion with graphene bridges (elongated flat cluster chain of graphene).
(4) shows a particle of metallic particles and/or carbon particles.
(5) shows the particle gap with binder without graphene bridge.
(6) shows a graphene bridge (elongated flat cluster chain of graphene) in contact with a particle.
(7) shows a graphene bridge (elongated flat cluster chain of graphene) in connection with another graphene bridge – which together form a braid.
Fig. 3 shows an enlarged simplified representation of the cross-section of particles and their interstices in a simple binder emulsion/dispersion.
(8) shows the particle gap with binder without graphene bridge.
(9) shows a particle consisting of metallic particles and/or carbon particles –
which stands out from the binder emulsion/dispersion.
(10) shows as a dotted line the enlarged area due to the uneven surface profile.
EMF-Turtal/PLV/ electrically conductive and electrically capacitive (storing electrical charge) as well as high-frequency radiation-reflecting coating
Designation: Shielding paint, dispersion, as electrically conductive and electrically capacitive (storing electrical charge) as well as high-frequency radiation reflecting paint/coating – by addition of graphene bridges.Description: Shielding paint, coating materials, electrically conductive and electrically capacitive (storing electrical charge) as well as high-frequency radiation reflecting paints and coatingsTechnical
background: Electrically conductive and electrically capacitive as well as high-frequency radiation reflecting paints and/or coatings are nowadays used in industry for the manufacture of capacitors and/or accumulators and in building biology for the manufacture of paints for the shielding/reflection of high-frequency electromagnetic radiation (electrosmog) and the derivation of low-frequency electric fields/currents. The main materials used are dispersions based on protic or organic solvents with the addition of metallic particles and/or carbon particles and/or carbon fibres with a size from 1 μm to 500 μm (see Fig.1 (1)), and a binder such as acrylate/acrylic resin such as styrene acrylate, pure acrylate or polyvinyl acetate (PVAC), in order to obtain an electrically conductive and/or electrically capacitive (electrical charge storing) and/or high-frequency radiation reflecting coating. A coating produced with such a dispersion has an apparently smooth surface – however, on closer inspection under a microscope, the characteristically uneven texture (see Fig. 3) – which leads to an increase in surface area – can be clearly seen. Under a microscope, the individual particles and/or carbon fibres can also be clearly seen (see Fig. 3), which extends / enlarges the total surface of the coating (by excelling as a raised structure of the surface) by the outstanding area (see Fig.3 (10)). It also becomes clear that there are gaps between the particles and/or carbon fibres – even at high densities – in which only the binder used is found (see Fig.1 (2)). It also becomes clear that individual particles – which have no contact to other particles – may also be found on the coating (see Fig.1 (3)). Since there is now no material in these particle spaces which has the desired properties such as: electrically conductive, electrically capacitive and/or reflecting high-frequency radiation, these locations or particle spaces (see Fig.1 (2)) are rather suboptimal. Neither transport nor storage of charged particles nor reflection of high-frequency electromagnetic radiation can take place at these locations or particle spaces. In practice, this problem is currently satisfactorily compensated by several layers/layers and/or by a saturated (fat) dispersion with more and/or additional smaller particles/particles per square micrometer (μm2). However, this compromise has the disadvantage that in the case of a largely saturated dispersion the binding capacity of the dispersion decreases and/or in the case of several layers/layers a second – or a third – additional work step (production step) as well as approximately double – or
approximately three times the amount of dispersion is required – whereby also between this first and second – or third layer – again particle interstices (see Fig.1 (2))with exclusively binder polymers are formed.
Solution: The task is solved by creating graph bridges (see Fig.2 (6),(7)) from graphs. Graphene is a pure carbon product, whose structure consists of a single atomic layer of carbon. Here graphene surface single crystals are within the graphene surfaces with approx. 1020 GPa (a GPa are one billion PA A Pascal (Pa) is the derived SI unit for pressure, stress,
Young’s modulus and fracture resistance) is extremely stable and ideally suited for transporting and/or storing charged particles. In the dispersion described above, graphene is incorporated into an emulsion and/or dispersion of a binder – such as acrylate/acrylic resin such as styrene acrylate, pure acrylate or polyvinyl acetate (PVAC) – and a protic or organic solvent such as water or ethanol or other alcohols. Due to the particularly high tensile strength of the graphene used of up to 1.25×1011 N/mm2 (Newton per square millimetre), strands (or elongated-flat cluster chains (see Fig.2)) are not used. (6)) of about 0.3µm-5µm length, and 0.1µm to 1µm width and a thickness of 1nm to 50nm are produced from graphene which form a graphene chain braid (see Fig.2 (7)) within the emulsion/dispersion binder which extends through the entire emulsion/dispersion binder. This binder emulsion/dispersion now replaces the binder usually used in the production of shielding paints/coating materials and electrically conductive and capacitive (storing electrical charge) as well as high-frequency radiation reflecting paints/coatings and/or emulsions made exclusively of simple polymers.
The resulting braid (see Fig.2 (7)) (graphene braid) thus forms electrically conductive bridges (see Fig. 2 (6),(7)) – between the metallic particles and/or carbon particles and/or carbon fibres which are added/mixed later – within the binder emulsion/dispersion, electrically capacitive bridges (which store electrical charge) which also reflect high-frequency radiation. Due to the low electrical resistance of graphene – which is on average 31Ω-m (ohmmeter) – these bridges (graphene bridges) are particularly suitable for realizing the desired properties of the binder emulsion/dispersion.