The present invention relates to 3D printable polypropylene (3DPP) homopolymer compositions. Specifically, the present invention relates to a 3DPP homopolymer compositions made by compounding, blending polypropylene with different hydrocarbon resins, fillers, compatibilizers and additives. Also, the invention relates to a method for preparing the 3DPP homopolymer compositions and products 3D printed using the 3DPP homopolymer compositions. The 3D printed products printed using 3DPP homopolymer composition exhibit improved 3D printability, interlayer adhesion, dimensional stability, reduced warpage with very high mechanical properties.

A coating including an ordered spatial distribution of a plurality of nanoparticles; and a polymer medium is disclosed. Also disclosed is an article, such as an optical device, can include the coating, on a substrate. A multilayer structure can include the coating with a high refractive index layer adjacent to the coating. A method of making the coating, the article, and the multilayer structures is disclosed.

The present invention relates to a method of preparing a hierarchical surface. The method comprises applying a first formulation comprising particles with a median particle diameter, D.sub.50, in the range of from 1 nm to 450 nm and a polymeric binder to a substrate, and then applying a second formulation comprising particles with a median particle diameter D.sub.50 in the range of from 500 nm to 1000 m on top of the first formulation. The particles self-assemble to provide a robust hierarchical structured surface. The particles can be functionalised to introduce functionalities, such as anti-viral functionality, which present at the surface. The method can be used to prepare robust, hydrophobic or super-hydrophobic anti-viral surfaces.

A coating composition includes alkaline mineral particles including an oxide of an alkaline earth metal and an amine-containing polymer. The amine-containing polymer is adsorbed on the alkaline mineral particles. Forming a coating composition includes at least partially coating alkaline mineral particles with an amine-containing polymer and dispersing the alkaline mineral particles in a liquid to yield the coating composition. The alkaline mineral particles include an oxide of an alkaline earth metal.

A method of printing a hydrogel-based device includes contacting a monomer, a crosslinker, a photoinitiator, and a precursor salt with a solvent to form an ink solution, printing the ink solution onto a substrate, exposing the ink solution to light, sufficient to form a hydrogel, and contacting the hydrogel with a reducing agent sufficient to precipitate nanoparticles from the precursor salt in the hydrogel.

A gas barrier film including a reaction product formed by a reaction of a zirconium oxide and a phosphoric acid compound, where the zirconium oxide is an amorphous zirconium oxide containing as a main component zirconyl hydroxide and/or zirconium hydroxide. A gas barrier laminate including the gas barrier film and a composition for forming a gas barrier layer.

Provided are an elastic material and a preparation method therefor and a loudspeaker and an electronic device. The elastic material comprises a carrying substrate, and a nanomaterial and a molecular sieve arranged inside pores of the carrying substrate; in the elastic material, the carrying substrate has a content of 97-99 wt %; a mass ratio of the nanomaterial to the molecular sieve is 1:0.9-1.1. The elastic material provided has a large specific surface area, which can effectively absorb noise, dissipate acoustic energy, and improve the efficacy of vibration and noise reduction; and by loading the nanomaterial and the molecular sieve, the shielding performance and signal output quality of the electronic device are improved, and the problem of reduced service life caused by unefficient heat dissipation of the electronic device is solved.

Disclosed are negative electrodes for all-solid-state batteries, methods of preparing coating slurry, and all-solid-state batteries. The negative electrode includes a negative electrode current collector and a coating layer on the negative electrode current collector. The coating layer includes a carbon-based material and a metal particle. The metal particle includes a lithiophilic metal. An average particle diameter of the metal particle is in a range of about 10 nm to about 200 nm. A standard deviation of a particle diameter of the metal particle is equal to or less than about 50% of the average particle diameter.

A steel sheet includes a base steel sheet and a film disposed on at least one side of the base steel sheet. In the steel sheet, the film includes an organic resin and a wax, the arithmetic average roughness Ra of the base steel sheet is 0.4 m or more, the organic resin is at least one resin selected from acrylic resins, epoxy resins, urethane resins, phenolic resins, vinyl acetate resins, and polyester resins, the wax is a polyolefin wax with a melting point of 120 C. or above and 140 C. or below and an average particle size of 3.0 m or less, the fraction of the wax in the film is 10 mass % or more, and the standard deviation of the film coating weight distribution per side is less than 0.9 g/m.sup.2.

The present invention provides polyimide varnish comprising: polyamic acid comprising, as a polymerization unit, at least one dianhydride monomer and at least one diamine monomer; nano silica surface-modified with an organosilane; a silicone-based additive represented by Chemical Formula 1; and an organic solvent.