An installation for depositing a shaped filled roving intended to be used to manufacture a composite-material component, includes a device for feeding a fibrous roving impregnated with a composition including a binder and ceramic or carbon fillers, a die for shaping and draining the binder defined by at least one porous surface, the die having an evolving section between an inlet section and an outlet section, the inlet section being larger than the outlet section, a support in communication with the die outlet on which the shaped roving is to be deposited, and a first conveying device configured to convey the roving from the feed device through the die and to the support.

A method for producing SiC/SiC composite material according to the present invention includes impregnating a substrate with a slurry containing particles of a flaky lubricant to obtain an impregnated body, drying out a solvent of the slurry from the impregnated body, forming an interface layer on surfaces of the SiC fibers by bending the impregnated body, and transferring the particles of the flaky lubricant to the surfaces of the SiC fibers while stretching the particles, and forming a SiC matrix inside the substrate on which the interface layer is formed. Since a thin interface layer of the flaky lubricant can be formed on the surfaces of the SiC fibers by transferring the flaky lubricant to the surfaces of the SiC fibers, the interface layer reaching inside of the substrate can be easily formed.

An installation for depositing a shaped filled roving intended to be used to manufacture a composite-material component, includes a device for feeding a fibrous roving impregnated with a composition including a binder and ceramic or carbon fillers, a die for shaping and draining the binder defined by at least one porous surface, the die having an evolving section between an inlet section and an outlet section, the inlet section being larger than the outlet section, a support in communication with the die outlet on which the shaped roving is to be deposited, and a first conveying device configured to convey the roving from the feed device through the die and to the support.

Provided are a magnesia carbon brick which does not include graphite yet has excellent spalling and corrosion resistances, and a method for producing thereof. The brick is obtained by adding an organic binder to a refractory raw material mixture followed by kneading, molding, and heat-treating, wherein the mixture includes total 0.1 to 2.0 mass % of pitch and/or carbon black, total 0.1 to 1.0 mass % of aluminum and/or aluminum alloy, 3.0 to 10.0 mass % of magnesia having particle diameter of less than 0.075 mm, and 87.0 to 96.0 mass % of magnesia having particle diameter of 0.075 to 5 mm; and a mass ratio of magnesia having particle diameter of 1 to 5 mm to that of 0.075 to 1 mm is 1.66 to 2.34; graphite is not included therein; and an apparent porosity thereof after heat-treatment under reductive atmosphere at 1400 C. for 3 hours is 8.0% or less.

The present invention relates to a negative active material for a lithium secondary battery, a preparation method therefor, and a lithium secondary battery including the same. The negative electrode active material is a negative electrode material for a secondary battery, the negative electrode active material comprising a silicon-carbon composite comprising: a core comprising crystalline carbon and silicon particles; and an amorphous carbon-containing coating layer disposed on a surface of the core, wherein the negative electrode active material comprises: silicon oxide formed on a surface of the silicon particles; and an oxide of crystalline carbon, formed on a surface of the crystalline carbon, the average particle diameter (D50) of the silicon particles having a nanometer size, the proportion of O relative to Si in the silicon oxide is 30%-50%, and the proportion of O relative to C in the oxide of the crystalline carbon is 4%-10%.

A graphite-containing refractory has higher bending strength and fracture energy than known refractories. The graphite-containing refractory has a graphite content of 1% to 80% by mass. 1000 to 300000 carbon fibers with a fiber diameter of 1 to 45 m/fiber are bundled. The carbon fiber bundle has a length of 100 mm or more and is placed within the graphite-containing refractory to form the same.

A refractory formulation containing an anhydrous solvent, an oleophilic rheology modifier and a refractory aggregate exhibits non-thermoplastic behavior, and remains plastic and formable at temperatures in the range of 10 degrees Celsius to 180 degrees Celsius. The oleophilic rheology modifier may effectively bind with the solvent to create a gel-like structure with organic solvents with moderate to high polarity. A phyllosilicate clay that has been treated with a quaternary fatty acid amine may be used as the oleophilic rheology modifier.

Provided are a magnesia carbon brick which does not include graphite yet has excellent spalling and corrosion resistances, and a method for producing thereof. The brick is obtained by adding an organic binder to a refractory raw material mixture followed by kneading, molding, and heat-treating, wherein the mixture includes total 0.1 to 2.0 mass % of pitch and/or carbon black, total 0.1 to 1.0 mass % of aluminum and/or aluminum alloy, 3.0 to 10.0 mass % of magnesia having particle diameter of less than 0.075 mm, and 87.0 to 96.0 mass % of magnesia having particle diameter of 0.075 to 5 mm; and a mass ratio of magnesia having particle diameter of 1 to 5 mm to that of 0.075 to 1 mm is 1.66 to 2.34; graphite is not included therein; and an apparent porosity thereof after heat-treatment under reductive atmosphere at 1400 C. for 3 hours is 8.0% or less.

The present invention provides a microporous ceramic atomizing core and method for preparing same. The microporous atomizing core includes raw materials in parts by mass as follows: 10 to 50 parts by mass of main material, 0 to 40 parts by mass of ceramic powder, 10 to 50 parts by mass of sintering aid, 0 to 20 parts by mass of pore-forming agent, 20 to 50 parts by mass of paraffin, and 0.1 to 2.0 parts by mass of surfactant. The main material includes one of diatomite, silicon dioxide aerogel powder and porous boron nitride, and the main material has a particle size of 200 mesh-1500 mesh. The microporous ceramic atomizing core of the present invention improves the porosity and liquid locking capacity of the atomizing core, ensures the sufficient atomization of the atomized liquid, and strengthens the use experience of the atomizing core.

Provided a heat storage graphite having a low degree of orientation, a composition for preparing heat storage graphite having a low degree of orientation, and a method for preparing heat storage graphite having a low degree of orientation. The heat storage graphite comprises, in terms of the total mass of the heat storage graphite, 65-85 wt % of dispersed-phase graphite and 15-35 wt % of continuous-phase graphite, wherein the dispersed-phase graphite is spherical graphite, and the sphericity of the spherical graphite is 0.5-1; the ratio of the vertical thermal conductivity/plane-oriented thermal conductivity of the heat storage graphite is 0.4-0.8; and the plane-oriented thermal conductivity of the heat storage graphite is 50-150 W/mK. The heat storage graphite has the advantages of a low degree of orientation and high plane-oriented thermal conductivity.