Abstract: The invention relates to a pre-impregnated fibre-reinforced composite material in laminar form, obtained impregnating a fibrous mass with a polymeric binder composition and intended to be subjected to successive forming and pyrolysis operations to produce a fibre-reinforced composite ceramic material. The polymeric binder composition is based on one or more resins chosen from the group consisting of siloxane resins and silsesquioxane resins, and can optionally comprise one or more organic resins. The polymeric binder composition is a liquid with viscosity between 55000 and 10000 mPas at temperatures between 50° C. and 70° C. The polymeric binder composition forms a polymeric binding matrix, not cross-linked or only partially cross-linked that fills the interstices of the fibrous mass. The invention also relates to a method for making said pre-impregnated fibre-reinforced composite material in laminar form.

Abstract: The invention relates to a pre-impregnated fibre-reinforced composite material in laminar form, obtained impregnating a fibrous mass with a polymeric binder composition and intended to be subjected to successive forming and complete curing operations to produce a fibre-reinforced composite material. The polymeric binder composition comprises one or more resins chosen in the group consisting of siloxane resins and silsesquioxane resins, and can optionally comprise one or more organic resins. The polymeric binder composition appears as a liquid with viscosity between 55000 and 10000 mPas at temperatures between 50° C. and 70° C. The polymeric binder composition forms a polymeric binder matrix, not cross-linked or only partially cross-linked, that fills the interstices of the fibrous mass. The invention also relates to a method for making said pre-impregnated fibre-reinforced composite material in laminar form.

Abstract: The present invention concerns a shaped composite material and a method for producing it. More specifically, the invention concerns a disc for a disc brake made from ceramic composite materials, usually known as “CMC”, i.e. “Carbon Material Ceramic” or “CCM”, i.e. “Carbon Ceramic Material”. These materials consist of carbon matrices containing carbon fibres usually infiltrated with silicon and a product of reaction between C and Si, silicon carbide (SiC). More specifically, the invention concerns a shaped composite material comprising a inner layer (3; 103) of CCM C/SiC/Si material comprising disorderly short filaments consisting mainly of carbon and respective outer layers (2, 2?; 102, 102?) of C/SiC/Si material and having an orderly fabric structure of mainly carbon fibres.

Abstract: A brake disc made of fiber-reinforced material includes a braking band having a predetermined thickness. The method for making the brake discs includes setting up a winding mandrel and forming at least one layer of fibers having a predetermined width. The layer of fibers is impregnated with a binder resin. The impregnated layer is wound about the mandrel, forming a hollow cylindrical body having a predefined outer diameter and an inner diameter substantially equivalent to the mandrel diameter. The layer of fibers is wound about the mandrel in a winding direction substantially parallel to the lengthwise direction of the layer. The cylindrical body is heated to at least partly cross-link the binder resin and obtain a solid semi-finished cylindrical body. The cylindrical body is cut in slices transversely to the cylindrical body axis according to predetermined thicknesses. Each slice is a disc-shaped body defining the disc's braking band.

Abstract: The present invention relates to a method of printing a composite material (1), for example polymeric, carbonaceous, siliconic or metallic comprising steps of: i) providing a plurality of bundles (2) of reinforcement fibers (4), wherein the reinforcement fibers (4) have a length in the range 3-50 mm and are in the number of about 1,000-100,000 in each bundle (2); ii) aligning the bundles (2) along a predetermined path (X, X?); iii) incorporating at least part of the bundles (2) into a matrix (6, 8), for example polymeric, carbonaceous, siliconic or metallic, preserving the alignment along said path (X, X?); iv) laying and solidifying at least one layer (8) of the matrix (6, 8) of step iii) to make the composite material (1).

Abstract: Caliper bodies are provided for disc brakes suitable for being arranged astride of a disc for a disc brake, which include an attachment side portion, a non-attachment side portion and at least one bridge, said bridge being suitable for connecting such side portions and for being arranged astride of the disc, wherein the caliper body includes at least one portion made from thermoplastic material, reinforced with carbon fibres, with resistance to a temperature of at least 200° C. Disc brakes which incorporate such caliper bodies are also provided.

Abstract: A method for treating a piece (1) made of a first porous material (8) with a second material (2) when this second material is in liquid state, said second material (2) being suitable for infiltration when a predetermined temperature range (DTi) and a predetermined field of infiltration pressure (Dpi), comprises the steps of: —providing a crucible (4) suitable for containing the piece (1) and the second material (2) and capable of withstanding the temperatures and pressures for the infiltration of the second material (2) in the piece (1); providing a cover (5) for the crucible (4) suitable for closing the crucible creating a chamber (6) inside the crucible; placing the piece (1) and the second material (2) in said crucible chamber (6), when this second material is not yet in liquid state; —subsequently closing the crucible (4) with the cover (5); —at a pressure (pa or pa1)—unsuitable for the infiltrations of the second material in the first porous material, raising the temperature of the piece (1) and the seco

Abstract: A brake disc made of fiber-reinforced material includes a braking band having a predetermined thickness. The method for making the brake discs includes setting up a winding mandrel and forming at least one layer of fibers having a predetermined width. The layer of fibers is impregnated with a binder resin. The impregnated layer is wound about the mandrel, forming a hollow cylindrical body having a predefined outer diameter and an inner diameter substantially equivalent to the mandrel diameter. The layer of fibers is wound about the mandrel in a winding direction substantially parallel to the lengthwise direction of the layer. The cylindrical body is heated to at least partly cross-link the binder resin and obtain a solid semi-finished cylindrical body. The cylindrical body is cut in slices transversely to the cylindrical body axis according to predetermined thicknesses. Each slice is a disc-shaped body defining the disc's braking band.

Abstract: The present invention concerns a shaped composite material and a method for producing it. More specifically, the invention concerns a disc for a disc brake made from ceramic composite materials, usually known as “CMC”, i.e. “Carbon Material Ceramic” or “CCM”, i.e. “Carbon Ceramic Material”. These materials consist of carbon matrices containing carbon fibres usually infiltrated with silicon and a product of reaction between C and Si, silicon carbide (SiC). More specifically, the invention concerns a shaped composite material comprising a inner layer (3; 103) of CCM C/SiC/Si material comprising disorderly short filaments consisting mainly of carbon and respective outer layers (2, 2?; 102, 102?) of C/SiC/Si material and having an orderly fabric structure of mainly carbon fibres.

Abstract: Caliper bodies are provided for disc brakes suitable for being arranged astride of a disc for a disc brake, which include an attachment side portion, a non-attachment side portion and at least one bridge, said bridge being suitable for connecting such side portions and for being arranged astride of the disc, wherein the caliper body includes at least one portion made from thermoplastic material, reinforced with carbon fibres, with resistance to a temperature of at least 200° C. Disc brakes which incorporate such caliper bodies are also provided.

Abstract: A method for treating a piece (1) made of a first porous material (8) with a second material (2) when this second material is in liquid state, said second material (2) being suitable for infiltration when a predetermined temperature range (DTi) and a predetermined field of infiltration pressure (Dpi), comprises the steps of: —providing a crucible (4) suitable for containing the piece (1) and the second material (2) and capable of withstanding the temperatures and pressures for the infiltration of the second material (2) in the piece (1); providing a cover (5) for the crucible (4) suitable for closing the crucible creating a chamber (6) inside the crucible; placing the piece (1) and the second material (2) in said crucible chamber (6), when this second material is not yet in liquid state; —subsequently closing the crucible (4) with the cover (5); —at a pressure (pa or pa1)—unsuitable for the infiltrations of the second material in the first porous material, raising the temperature of the piece (1) and the seco