Composite Materials A composite material responsive to mechanical and/or electrical stress comprises at least one substantially non-conductive binder and at least a first electrically conductive filler. The conductivity of the composite material in an unstressed state is related to the conductivity of the at least one substantially non-conductive binder and in a stressed state to the conductivity resulting from the presence of the at least first electrically conductive filler in the composition. The first electrically conductive filler is comprised of magnetite particles in a particle size distribution, and the at least one binder may include an oil, a gel, a wax a gel-wax, gel-ink or mixtures thereof.

The apparatus for mapping the shape of the spatial form according to the invention comprises a thermoplastic sheet provided with a system adapted to generate heat capable of plasticizing said sheet under the influence of the current flowing through said system. The subject of the invention is also a device for immobilizing human or animal body parts, in particular limbs or joints, the immobilizing device comprising said device for mapping the shape of the spatial form. The subject of the invention is also a system comprising an apparatus for mapping the shape of a spatial form.

The invention relates to a polymer composition comprising a polymer (a) and a nanoparticle filler (b), wherein the polymer composition comprises a volume percentage (vol. %) of the nanoparticle filler (b), which is Dvol vol. %, and has a center-to-center average distance, in nanometer (nm), in two dimensions (2D) and with a free radius, from one nanoparticle to its nearest nanoparticle neighbour, which is R1st nm, and wherein the polymer composition shows a dependency between said center-to-center average distance to nearest neighbour, R1st, and said volume percentage, Dvol vol. %, which is R1st=E/(Dvol+0.3)+F, wherein Dvol.sub.1≤Dvol≤Dvol.sub.2, E.sub.1≤E≤E.sub.2, F.sub.1≤F≤F.sub.2, and Dvol.sub.1 is 0.010 and Dvol.sub.2 is 4.4, E.sub.1 is 100 and E.sub.2 is 280, and F.sub.1 is 50 and F.sub.2 is 140; an electrical device, e.g. a power cable; and a process for producing an electrical device.

A sand additive for use in a “no bake” foundry mix composition having a polyurethane-based binder system reduces the amount of smoke emitted when molds and cores formed from the composition are exposed to molten metal, as compared to when the sand additive is not used. The sand additive comprises yellow iron oxide having the chemical formula Fe(OH).sub.3. It can also comprise at least one of red iron oxide, black iron oxide and wüstite. In such cases, the yellow iron oxide accounts for about 10 to about 40 weight percent of the combined weight of the yellow iron oxide, red iron oxide, black iron oxide and wüstite, and preferably, about 20 to about 30 weight percent of the combined weight of the yellow iron oxide, red iron oxide, black iron oxide and wüstite.

A core-shell nanocomposite is formed by co-assembly of an amphiphilic polymer and hydrophobically modified magnetic nanoparticles, with its core being a hydrophobically modified magnetic nanomaterial and its shell being the amphiphilic polymer, wherein hydrophilic segments in the amphiphilic polymer are located at an outermost layer of the shell. The above composite can be used as additives in the crystallization of conglomerates and obtain optically pure crystals of both enantiomers in a single process. The key thereof is that the composite is used to enrich molecules with the same configuration while inhibit the crystallization of the other enantiomer in a supersaturated solution of conglomerates, such that a non-magnetic crystal and a magnetic crystal (which are enantiomers of each other) are generated in a unit operation. Optically pure crystals of both enantiomers with over 90 ee % can be obtained by one-time crystallization, and the total yield can be as high as 40%.

The present invention provides a backing material having an excellent attenuation effect of acoustic wave vibration, a method of producing the same, and an acoustic wave probe provided with the backing material. The backing material includes a resin and a magnetized particle, in which the magnetized particle has a magnetic flux density of 1,000 to 15,000 gauss.

Disclosed herein is a method for manufacturing a sound insulation material, a sound insulation material manufactured using this manufacturing method, and a carpet for a vehicle using the sound insulation material, and the sound insulation material is manufactured using a composite resin composition including 30 parts by weight to 70 parts by weight of aluminum oxide, 10 parts by weight to 20 parts by weight of nanoclay, 0.2 parts by weight to 0.8 parts by weight of an antioxidant, and 0.1 parts by weight to 0.5 parts by weight of a lubricant, with respect to 100 parts by weight of a base resin including PE, and the carpet for a vehicle is manufactured by coating the sound insulation material on a carpet fabric material and drying the result.

A powder coating material includes powder particles and an external additive including inorganic particles having an average primary particle diameter of 1000 nm or less. The ratio of the carbon content (mass %) in the inorganic particles to the average primary particle diameter (nm) of the inorganic particles is 0.1 or more. The powder coating material includes a black colorant or a white colorant or does not include any colorant.

A method for preparing a ratiometric fluorescent sensor for phycoerythrin based on a magnetic molecularly imprinted core-shell polymer is provided. With Fe.sub.3O.sub.4 magnetic nanoparticles as the core, blue fluorescence-emitting carbon quantum dots (B-CDs) are coupled on the surfaces of Fe.sub.3O.sub.4 magnetic nanoparticles, and SiO.sub.2 shells carrying template molecules (phycoerythrin) are grown on the surfaces of Fe.sub.3O.sub.4/B-CDs. Then, the molecularly imprinted polymer SiO.sub.2-MIPs are obtained by eluting the template molecules, that is, Fe.sub.3O.sub.4/B-CDs/SiO.sub.2-MIPs are obtained. Fluorescence emission spectra of the dispersion of Fe.sub.3O.sub.4/B-CDs/SiO.sub.2-MIPs in the presence of different concentrations of phycoerythrin are measured. By fitting the linear relationship between the ratios I.sub.phycoerythrin/I.sub.B-CDs of fluorescence emission peak intensities of phycoerythrin and B-CDs and the molar concentrations of phycoerythrin, the ratiometric fluorescent sensor for phycoerythrin is constructed.

A method for preparing a ratiometric fluorescent sensor for phycoerythrin based on a magnetic molecularly imprinted core-shell polymer is provided. With Fe.sub.3O.sub.4 magnetic nanoparticles as the core, blue fluorescence-emitting carbon quantum dots (B-CDs) are coupled on the surfaces of Fe.sub.3O.sub.4 magnetic nanoparticles, and SiO.sub.2 shells carrying template molecules (phycoerythrin) are grown on the surfaces of Fe.sub.3O.sub.4/B-CDs. Then, the molecularly imprinted polymer SiO.sub.2-MIPs are obtained by eluting the template molecules, that is, Fe.sub.3O.sub.4/B-CDs/SiO.sub.2-MIPs are obtained. Fluorescence emission spectra of the dispersion of Fe.sub.3O.sub.4/B-CDs/SiO.sub.2-MIPs in the presence of different concentrations of phycoerythrin are measured. By fitting the linear relationship between the ratios I.sub.phycoerythrin/I.sub.B-CDs of fluorescence emission peak intensities of phycoerythrin and B-CDs and the molar concentrations of phycoerythrin, the ratiometric fluorescent sensor for phycoerythrin is constructed.