摘要:
This invention is directed to methods of making nanoreinforced carbon fiber and components comprising composite material that contains carbon fiber. In one embodiment, the method entails coating a nanoreinforcement material with a powder coat to form a powder coated nanoreinforcement material and contacting at least one carbon fiber with the powder coated nanoreinforcement material. Preferably, the powder coat is a thermoplastic or adhesive. In another embodiment, the components are aircraft and aircraft components that comprise composite material containing carbon fiber, such that the carbon fiber comprises from 0.1 to 20 percent by weight nanoreinforcement material.
摘要:
The invention relates to a wet-friction material comprising a planar carbon fiber-reinforced composite material containing at least one textile fabric made of carbon fibers embedded in a plastic matrix, characterized in that at least some areas of the wet-friction surface of the carbon fiber-reinforced composite material are carbonized from the surface to a defined depth. The invention also relates to a method for producing said wet-friction material.
摘要:
In some examples, a method for forming a carbon fiber preform includes depositing, via a print head of a three-dimensional printing system, a first plurality of carbon fibers to form a first layer of carbon fibers in approximately an x-y plane, wherein the first plurality of carbon fibers are deposited around an array of carbon fiber filaments extending in approximately a z-axis direction relative to the x-y plane.
摘要:
A method of treating a carbon structure is provided. The method may include infiltrating the carbon structure with a silicon compound preparation, heat treating the carbon structure to form a plurality of silicon carbide whiskers in the carbon structure, and/or densifying the carbon structure.
摘要:
The invention relates to a method for manufacturing a part made of composite material, said method including the following steps: a step of forming a fibrous texture (10) from refractory fibres; a first impregnation step of impregnating the fibrous texture (10) with a first slurry (150) containing first refractory particles (151); a step of removing the liquid phase (152) from the first slurry (151) so as to allow only the first refractory particles (151) to remain inside said texture; a second impregnation step of impregnating the fibrous texture (20) with a second slurry (160) containing second refractory particles (161); a step of removing the liquid phase (162) from the second slurry (160) such as to allow only the second refractory particles (161) to remain inside said texture and to obtain a fibrous preform (30) filled with the first and second refractory particles (151, 161); and a step of sintering the first and second refractory particles (151, 161) in the fibrous preform (30) so as to form a refractory matrix inside said preform.
摘要:
A method to manufacture an article made of a thermostructural composite starting from a preceramic prepreg and comprising the steps of: - preparing a prepreg multilayer material, in which at least one layer of preceramic prepreg is arranged between at least two layers of conventional prepreg; - cross-linking, during which the conventional prepreg and the preceramic prepreg are cross-linked; - ceramization, during which said prepreg multilayer material resulting from the cross-linking step undergoes a temperature that is greater than the one of the cross-linking step and is such as to cause the ceramization of said preceramic prepreg; - removal, during which said layers of conventional prepreg are removed.
摘要:
The present disclosure provides a fibrous preform (20;100;510), comprising an annulus having at least one of an outer diameter portion (110) or an inner diameter portion (120), the outer diameter portion (110) extending radially inward from an outer diameter (75;104) of the fibrous preform (20;100;510) and the inner diameter portion (120) extending radially outward from an inner diameter (25;102) of the fibrous preform (20;100;510). In various embodiments, the fibrous preform (20;100;510) further comprises a medial diameter portion (106) disposed between the outer diameter (75;104) and the inner diameter (25;102), wherein the medial diameter portion (106) comprises a first needling profile (306), and the at least one of the outer diameter portion (110) or the inner diameter portion (120) comprises a second needling profile (320). In various embodiments, the first needling profile (306) is less than the second needling profile (320).
摘要:
The structure (102, 302, 402, 502, 602, 702, 802, 902) comprises one or more segments (404, 604) having axially oriented substantially parallel fluid flow passages (110, 304, 410, 510, 610,710,810,910); cell walls (112, 312, 412, 512, 612, 712, 812, 912) between adjacent fluid flow passages, each cell wall having at least two opposite cell wall surfaces, and comprising (in or on a cell wall surface) at least one active compound that can interact with a fluid contained within or passed through the passages; and a plurality of axially continuous, axially oriented, filaments (114, 314, 414, 514, 614,714, 814,914) that are thermally and/or electrically conductive for transfer of thermal energy from the active compound. According to the invention the filaments are embedded within the cell walls in direct contact with the active compound on or in the cell wall surface, and can transfer thermal energy between the active compound and the conductive filaments.