The invention utilizes swelling and fusion effects of graphene oxide in a solvent to implement cross-linked bonding of a graphene material itself and materials such as polymers, metal, paper, glass, carbon materials, and ceramics. The present invention not only overcomes the shortcoming in traditional adhesives of residual formaldehyde, but also has short drying time, high bonding strength and high corrosion resistance. The present invention is widely applied in the fields of aviation, aerospace, automobiles, machinery, construction, chemical, light industry, electronics, electrical appliances, and daily life, etc.

A method for producing carbon or graphite foam parts with high purity level for high-temperature insulation under vacuum or protective gas, as insulating material or as filter material, includes the following steps: introducing dry, foamable starch (1) into an open-top container (2) having a round or angular cross section, until the base (3) of the container (2) is covered amply and uniformly with starch (1); introducing the container (2) partly filled with starch (1) into an oven (4), and heating the container (2) to a foaming temperature of >180° C. over a prolonged period of several hours to foam the starch (1), until the container (2) has filled completely with carbon foam (6); withdrawing the container (2) from the oven (4) and extracting the carbon foam (6) after sufficient cooling, and optionally portioning the carbon foam (6) into carbon foam parts (6.1).

The invention provides a method for the production of graphene-structured products. The method generally comprises contacting at a conversion temperature ranging from about 850° C. to about 1100° C. in an inert atmosphere coal with a molten salt to produce a graphene-structured product. In an alternate embodiment, the method comprises contacting at a conversion temperature ranging from about 850° C. to about 1100° C. in an inert atmosphere coal with a molten salt to produce a graphene-structured product; and, separating a rare earth element from the graphene-structured product.

The present invention relates to a surface-decorated flexible graphene self-heating gas sensor, which has a pattern of graphene formed on a flexible substrate, has a part of the pattern of graphene decorated with metal nanoparticles, and detects a gas by applying an external voltage.

This application describes a thermal interface material, and preparation and application thereof. Specifically, a thermal interface material is described. The thermal interface material is obtained by bending and folding, optional horizontal pressing and optional high-temperature treatment of a laminated structure. Two-dimensional high-thermal-conductivity nano-plates on the upper surface and the lower surface of the thermal interface material have a horizontal stack structure. Two-dimensional high-thermal-conductivity nano-sheets located between the upper surface and the lower surface of the thermal interface material have both a vertical stack structure and a curved stack structure. Also described are a preparation method and application of the thermal interface material. The thermal interface material combines excellent thermal conductivity and compressibility; the preparation method has the characteristics of simple process, low costs, safety and environmental protection, and accordingly, the thermal interface material can effectively resolve the heat dissipation problem of electronic products.

Hollow spherical particles which include: an inorganic particle layer including ceramic particles and conductive carbon-based particles; and a polymer coating layer surrounding the inorganic particle layer, and in which the inorganic particle layer surrounds an empty inner space to form the hollow spherical particles. A method of manufacturing the hollow spherical particles and a heat-dissipating fluid composition including the hollow spherical particles.

A polymer material molded product includes a polymer material and a porous carbon material having an X-ray diffraction spectral characteristic shown in the following (1) or (2), (1): a peak derived from a (002) plane of carbon is observed, a half width of the peak derived from the (002) plane of carbon is 5° or more, and a half width of a peak derived from a (10) plane of carbon is 3.2° or less, and (2): the peak derived from the (002) plane of carbon is not observed, and the half width of the peak derived from the (10) plane of carbon is 3.2° or less.

Provided are a slurry of graphene oxides with different degrees of oxidation, a composite film of graphene oxides, and a graphene heat-conducting film. The slurry of the graphene oxides comprises the graphene oxides and a solvent, and the graphene oxides include a strong graphene oxide and a weak graphene oxide, wherein the slurry comprises two graphene oxides with different degrees of oxidation, which can increase a carbon content in the graphene oxide per unit mass, so that the finally obtained graphene heat-conducting film has more carbon.

A super-flexible high thermal conductive graphene film and a preparation method thereof are provided. The graphene film is obtained from ultra large homogeneous graphene sheets through processes of solution film-forming, chemical reduction, high temperature reduction, high pressure suppression and so on. The graphene film has a density in a range of 1.93 to 2.11 g/cm.sup.3, is formed by overlapping planar oriented graphene sheets with an average size of more than 100 μm with each other through π-π conjugate action, and comprises 1 to 4 layers of graphene sheets which have few defects. The graphene film can be repeatedly bent for 1200 times or more, with elongation at break of 12-18%, electric conductivity of 8000-10600 S/cm, thermal conductivity of 1800-2600 W/mK, and can be used as a highly flexible thermal conductive device.

The first present invention is a graphite sheet having a thickness of not more than 9.6 μm and more than 50 nm and a thermal conductivity along the a-b plane direction at 25° C. of 1950 W/mK or more. The second present invention is a graphite sheet having a thickness in a range of less than 9.6 μm and 20 nm or more, an area of 9 mm2 or more, and a carrier mobility along the a-b plane direction at 25° C. of 8000 cm2/V.Math.sec or more.