A tungsten oxide coating material for an electrochromic device that is a coating material for forming a tungsten oxide thin film having electrochromic characteristics, the coating material comprising: a solvent; tungsten oxide nanoparticles dispersed in the solvent; and a binder, wherein in the tungsten oxide nanoparticles, a half-value width of a peak detected at 291 in X-ray diffraction analysis (20) is 2 or less, and a primary particle size is 5 to 25 nm.

The present invention provides a resin composition which has an infrared ray-blocking ability with excellent moist heat resistance while maintaining high transparency. The resin composition of the present invention contains, relative to (A) 100 parts by weight of a polycarbonate resin (component A), (B) 0.0001 to 0.2 part by weight of composite tungsten oxide fine particles (component B) represented by the general formula: MxWyOz, (C) 0.0001 to 0.1 part by weight of an epoxy resin (component C), and (D) 0.001 to 0.5 part by weight of a release agent (component D).

The present invention provides a resin composition which has an infrared ray-blocking ability with excellent moist heat resistance while maintaining high transparency. The resin composition of the present invention contains, relative to (A) 100 parts by weight of a polycarbonate resin (component A), (B) 0.0001 to 0.2 part by weight of composite tungsten oxide fine particles (component B) represented by the general formula: MxWyOz, (C) 0.0001 to 0.1 part by weight of an epoxy resin (component C), and (D) 0.001 to 0.5 part by weight of a release agent (component D).

A polymer composition capable of being additively manufactured includes a polymer matrix and a magnetically receptive additive. The polymer composition may be additively manufactured or extruded to form a tool which may be used to form a composite part.

A method for depolymerizing a polyester may comprise heating a polyester at a temperature and for a period of time in the presence of a supported metal-dioxo catalyst, optionally, in the presence of H.sub.2, to induce hydrogenolysis of ester groups in the polyester and provide monomers of the polyester.

Disclosed in the present invention is a resin-based composite nuclear shielding material, including the following raw materials in percentage by mass: 37%-41% of resin, 46%-53% of functional filler, 3%-7% of curing agent and 3%-10% of silane coupling agent. The resin-based composite nuclear shielding material provided by the present invention includes the resin with high mechanical property and the functional filler with high radiation protection property. The addition of a proper number of carbon nanotubes has a certain effect of improving the tensile strength and bending strength of an epoxy resin-based composite material. The nuclear shielding material provided by the present invention is lightweight, controllable in density and easy to process and mold. The resin selected by the nuclear shielding material provided by the present invention has excellent tensile property, thermal stability and corrosion resistance.

The present invention relates to the technical field of lithium-ion batteries, and particularly provides a positive electrode sheet and a preparation method therefor, and a lithium-ion battery comprising the positive electrode sheet. The positive electrode sheet comprises a positive electrode active material layer, and the positive electrode active material layer comprises a positive electrode material, a negative thermal expansion material, a conductive agent, and a binder, wherein the characteristic value J of the positive electrode sheet satisfies: 0.001J0.005. wherein J=R(F)/, R(F) represents the peak intensity ratio between the main peak (F) of the negative thermal expansion material and the (003) characteristic peak of the positive electrode material in the XRD pattern of the positive electrode sheet, and p represents the surface density of the positive electrode sheet, with a unit of mg/cm.sup.2.

A nanocapsule-based thermal insulation functional masterbatch and a preparation method thereof are provided. The nanocapsule-based thermal insulation functional masterbatch is prepared by mixing a polymer substrate, an organic-inorganic composite nanocapsule, and an auxiliary agent to allow granulation, where the nanocapsule is added at 1 wt % to 20 wt % and the auxiliary agent is added at 0.2 wt % to 0.5 wt % by weight percentage, while the polymer substrate is added as a balance. The nanocapsule is prepared by emulsification prepolymerization, polymerization, and nano-compounding. Compared with general thermal insulation functional masterbatch, the nanocapsule-based thermal insulation functional masterbatch shows outstanding stability, higher thermal insulation, and excellent thermal insulation performance.

The present invention provides a resin composition used for producing an acoustic member, the resin composition comprising: a thermosetting resin; and two or more types of particles dispersed in the thermosetting resin, the two or more types of particles comprising: heavy particles that have a higher density than the thermosetting resin and are particles other than metal particles; and light particles that have a lower density than the thermosetting resin, and the total content of the heavy particles and the light particles relative to the entire volume of a cured product of the resin composition being 10 vol % or more.