Integrally-forming method of n-shaped joint and I-shaped beam made of fiber-reinforced resin matrix composites
A fiber-reinforced resin and composite material technology, applied in the field of composite material manufacturing, can solve the problems of low production efficiency and high cost, and achieve the effect of improving production efficiency and reducing production cost
Inactive Publication Date: 2013-11-27
BEIHANG UNIV
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[0003] The object of the present invention is to provide a kind of integral molding method of fiber-reinforced resin-based composite material Π-shaped joint and I-shaped beam, to solve the problem of low production efficiency of the traditional forming method of fiber-reinforced resin-based composite material Π-shaped joint and I-shaped beam costly technical issues
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[0022] The present invention will be further described below in conjunction with the accompanying drawings and implementation examples.
[0023] The flow chart of the present invention is as figure 1 As shown, first prepare the fiber preform of the matrix structure 15, then put the prepared fiber preform of the matrix structure 15 into the mold and position and close the mold, then vacuumize, inject resin and heat up to cure. After the curing is completed, start The matrix structure 15 that has been cured is taken out from the mold, and finally the matrix structure 15 is mechanically processed and decomposed to obtain a fiber-reinforced resin-based composite material Π-shaped joint 16 and a fiber-reinforced resin-based composite material I-beam 17 .
[0024] Concrete implementation steps of the present invention are as follows:
[0025] Step 1: Lay the fiber cloth according to the designed laying plan, and use a sizing agent to shape the layers of the fiber cloth to prepare a...
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The invention discloses an integrally-forming method of an n-shaped joint and an I-shaped beam made of fiber reinforced resin matrix composites. The integrally-forming method comprises five steps as follows: (1), preparing a preformed fiber body of a matrix structure; (2), putting the preformed fiber body in a mold, performing positioning on the preformed fiber body, and closing the mold; (3), pumping vacuum, injecting resin to the mold, performing heating and solidifying; (4), opening the mold to take out the matrix structure; (5), machining and decomposing the matrix structure to obtain the n-shaped joint and the I-shaped beam. According to the integrally-forming method, the RTM integral forming of the n-shaped joint and the I-shaped beam is realized through the mold at the same time. Therefore, the production efficiency is improved, and the manufacturing cost is lowered.
Description
technical field [0001] The invention provides an integral molding method of a fiber-reinforced resin-based composite material Π-shaped joint and an I-beam, belonging to the technical field of composite material manufacturing. Background technique [0002] Π-shaped joints and I-beams are commonly used structures in aircraft, which transmit and bear various loads from the wings and fuselage during take-off, cruise and landing of the aircraft. Compared with metal materials, I-beams and Π-joints made of fiber-reinforced resin-based composite materials are lighter in weight, so they are more and more favored and applied in aircraft structural design. In order to further reduce the structural weight, it is necessary to carry out an integrated process design on these components. Although the traditional autoclave method can realize the integral molding of the structure, it is limited in practical application because of its high processing cost. Resin transfer molding (RTM), as a ...
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IPC IPC(8): B29C45/14B29B11/14B29L31/30
Inventor 熊峻江云新尧付裕白江波
Owner BEIHANG UNIV