摘要:
The invention relates to a method comprising: providing a plurality of cords (106) dipping the plurality of cords a first tank comprising a polyurethane emulsion stabilized with internal anionic and external nonionic species, dipping the plurality of cords a second tank comprising RFL suspension, and dipping the plurality of cords a third tank comprising rubber based polymer, to provide a plurality of treated cords; providing a first elastomeric layer; laying up the plurality of treated cords (106) on the first elastomeric layer to form tensile reinforcement layer; laying up a second elastomeric layer on the tensile reinforcement layer; and, curing the combination of the first elastomeric layer, the tensile reinforcement layer and the second elastomeric layer in a profile fomring mold. Methods of manufacturing a belt are also disclosed.
摘要:
A thermal processing and consolidation system (100) includes an upper assembly (104), a lower assembly (102), and an air impingement device (120). At least one of the upper assembly or the lower assembly is a chamber assembly. The upper assembly and the lower assembly are movable relative to one another between an opened position where the upper assembly (104) and the lower assembly (102) are detached from one another, and a closed position where the upper assembly (104) and the lower assembly (102) are coupled to one another and form an enclosed plenum for receiving a tool (106). The air impingement device (120) is arranged at least partially in the plenum, and configured to direct forced flows of air (156) at the tool (106) when the tool is received in the plenum.
摘要:
This invention relates to a process for manufacturing a piece of composite material made with a polymer resin and fiber reinforcement from at least two subcomponents comprising the following steps: a) providing the first subcomponent partially cured in a curing cycle in an autoclave at a maximum temperature T1, comprised between the resin gelling temperature GT and the resin curing temperature CT, applied for a predetermined time PT1 such that the exothermal component is released from the first subcomponent in a degree exceeding 50%; b) providing the second subcomponent in a fresh or cured state; c) assembling the two subcomponents and then joining them to one another in a curing cycle in an autoclave at a maximum temperature T2 comprised between 90% and 100% of the resin curing temperature CT, applied for a predetermined time PT2.
摘要:
An autoclave (100) is disclosed comprising an elongated chamber (112) having an interior section (40) and an annular duct (200) surrounding the interior section (240). The annular duct (200) is separated from the interior section by a dividing wall (230). The autoclave (100) further includes a heat source for heating the air, a fan (130) for circulating the air in the chamber (112), and an air deflector (300, 400, 500) mounted in a distal end (270) of the chamber (112).
摘要:
The invention relates to a method for forming a texture on a substrate, comprising: depositing a deformable layer on the substrate; bringing the deformable layer into contact with the textured surface of a secondary stamp; introducing the covered substrate and the secondary stamp into a bag made from non-permeable material; introducing the bag and the contents thereof into a sealed chamber; removing the air from the chamber until a pressure value of at most 0.5 bar is obtained; sealing the bag before reintroducing air into the chamber; introducing the sealed bag and the contents thereof into an autoclave; applying a pressure of between 0.5 and 8 bar and a temperature of between 25 and 400 °C for a period of between 15 minutes and several hours; opening the bag; and separating the substrate and the secondary stamp. The invention also relates to: a transparent assembly comprising a glass substrate covered with a textured layer, which is obtained using the above method; and the uses of the method in order to obtain a substrate intended for extracting, guiding or redirecting light, or a superhydrophobic or superhydrophilic substrate.
摘要:
This invention relates to a process for manufacturing a piece of composite material made with a polymer resin and fiber reinforcement from at least two subcomponents comprising the following steps: a) providing the first subcomponent partially cured in a curing cycle in an autoclave at a maximum temperature T1, comprised between the resin gelling temperature GT and the resin curing temperature CT, applied for a predetermined time PT1 such that the exothermal component is released from the first subcomponent in a degree exceeding 50%; b) providing the second subcomponent in a fresh or cured state; c) assembling the two subcomponents and then joining them to one another in a curing cycle in an autoclave at a maximum temperature T2 comprised between 90% and 100% of the resin curing temperature CT, applied for a predetermined time PT2.
摘要:
The invention concerns a method for manufacturing a shell, in particular a fuselage shell, a wing shell, a horizontal stabilizer shell or a vertical stabilizer shell, that is reinforced with a plurality of stiffening elements, for forming component parts for aircraft with high dimensional stability, wherein the stiffening elements and a shell skin are made with epoxy resin from at least partially cured carbon fiber reinforced semi-finished parts, the method comprising the following steps: positioning the stiffening elements on the shell skin, abutting connecting elements against the shell skin and the stiffening elements, and curing the connecting elements to form the shell. The invention also concerns a shell, in particular a fuselage shell, a wing shell, a horizontal stabilizer shell or a vertical stabilizer shell, manufactured in accordance with the inventive method.
摘要:
An improved autoclave for curing retread tires includes a chamber with circulating air flow having turbulence generating devices located in a middle lengthwise portion of the chamber. The turbulence generating devices include apertures to guide air from a supply duct into the chamber, and/or wedge-shaped elements of fins mounted on the interior wall of the chamber to disrupt the air flow and cause turbulence.