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Composite material reinforced by hybrid fiber preform and preparation method of composite material

A composite material and preform technology, applied in chemical instruments and methods, ceramic layered products, layered products, etc., can solve the problems of lack of products, high temperature resistance, ablation resistance, wave absorption and other performance studies are less, etc. Achieve the effects of high interlayer bonding strength, integration of structure and function, and short densification period

Inactive Publication Date: 2022-01-11
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] At present, since the fiber preforms studied are mostly composed of organic fibers, the fibers are flexible, the textile performance is good, and the process is simple, there is a lack of high-performance inorganic fiber mixed preform products.
In addition, for composite materials reinforced by mixed fiber preforms, the current research focuses on the mechanical properties of resin-based composite materials, and there are few studies on the high-temperature resistance, ablation resistance, and wave-absorbing properties of ceramics, metal matrices, and composite materials. Therefore, the development of high-performance inorganic fiber mixed fiber preform reinforced composite materials has important application value

Method used

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  • Composite material reinforced by hybrid fiber preform and preparation method of composite material

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Embodiment 1

[0022] A composite material reinforced by a mixed fiber prefabricated body, composed of a fiber prefabricated body, a composite material interface and a matrix, characterized in that the fiber prefabricated body is a three-dimensional fabric woven from three kinds of fibers, and the fiber volume fraction in the prefabricated body is The number of fiber cloth layers in the prefabricated body is 3 layers, and the three-dimensional overall structure is formed by adding yarns between the layers. The fibers are woven by loom temples during the weaving process; the outer layer of the wave-absorbing composite material It is a glass fiber wave-transparent layer with a fiber volume fraction of 10% and a thickness of 5mm. It adopts plain weave and its impedance is about 400Ω. The middle layer is a silicon carbide fiber loss layer with a fiber volume fraction of 15% and a thickness of 3mm. Plain weave, resistivity 1~10Ω·cm, dielectric loss tangent value 0.6, inner layer is carbon fiber re...

Embodiment 2

[0036]A composite material reinforced by a mixed fiber prefabricated body, composed of a fiber prefabricated body, a composite material interface and a matrix, characterized in that the fiber prefabricated body is a two-dimensional three-dimensional fabric woven from two kinds of fibers, and the fiber volume in the prefabricated body The score is 45%. The number of layers of fiber cloth in the prefabricated body is 2 layers. The layers are stitched together to form a three-dimensional overall structure. The fibers are woven with loom temples during the weaving process; the outer layer of the high-temperature structural material is Silicon carbide fiber, the volume fraction of silicon carbide fiber in the preform is 15%, the thickness is 8mm, the inner layer is carbon fiber volume fraction is 20%, and the thickness is 12mm; the fiber cloth used is respectively composed of silicon carbide fiber, carbon fiber and a ceramic powder Composition, the volume fraction of ceramic powder ...

Embodiment 3

[0048] A composite material reinforced by a mixed fiber prefabricated body, composed of a fiber prefabricated body, a composite material interface and a matrix, characterized in that the fiber prefabricated body is a three-dimensional fabric woven from five kinds of fibers, and the fiber volume fraction in the prefabricated body is 65%, the number of layers of fiber cloth in the prefabricated body is 5 layers, and the thickness of each layer is 10-50mm. The layers are bonded by resin to form a three-dimensional overall structure. The fibers are woven by loom temples during the weaving process; 1400 The outer layer of the heat-resistant composite material above ℃ is carbon fiber, the fiber volume fraction is 15%, and the thickness is 10mm. The middle layer is silicon carbide fiber, alumina fiber, and quartz fiber in sequence. %, the thickness is 8mm, 8mm, 8mm respectively, the inner layer is high silica fiber, the volume fraction of the fiber is 20%, and the thickness is 10mm; t...

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Abstract

The invention discloses a composite material reinforced by a hybrid fiber preform. The composite material is composed of the fiber preform, a composite material interface and a ceramic matrix, the fiber preform is a three-dimensional fabric formed by hybrid weaving of 2-5 kinds of high-performance inorganic fibers, and the matrix is resin, light alloy, carbon and ceramic. A preparation method of the composite material comprises the steps of ceramic slurry preparation, fiber bundle dipping treatment, fiber weaving, three-dimensional integral structure preform forming, preform heat treatment, interface preparation and matrix preparation. The weaving performance of the inorganic rigid fibers is improved, the prepared composite material is good in integrity, high in interlayer bonding strength and not prone to layering, meanwhile, the functions of wave transmission, wave absorption, high-temperature structural material, heat insulation and heat protection are achieved through combination of the hybrid fibers, and integration of the structure and the function is effectively achieved.

Description

technical field [0001] The invention relates to a composite material and a preparation method thereof, in particular to a composite material reinforced by a mixed braided fiber prefabricated body and a preparation method thereof. Background technique [0002] Due to the high performance and high strength of the continuous fiber, the reinforced composite material has many advantages such as light weight, high strength, and multi-function. It is one of the most potential materials in the current material field, but it is limited by the internal structure of the composite material and the type of fiber Unity, its scope of application is limited. Therefore, through the structural design of composite fiber reinforcements, it is necessary to develop mixed fiber preforms and composite materials with structural strength and functional integration. [0003] As the reinforced structure of composite materials, the fiber prefabricated body is an important guarantee for the structural s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/80C04B35/82C04B35/622C04B35/84C04B35/628C04B35/565C22C47/04C22C47/06C22C47/12C22C49/04C22C49/14C22C101/10C22C101/14C22C101/06
CPCC04B35/82C04B35/622C04B35/565C04B35/62873C04B35/62863C04B35/62868C04B35/62847C22C47/04C22C47/06C22C47/12C22C49/04C22C49/14C04B2235/5232C04B2235/5228C04B2235/522C04B2235/5244C04B2235/5248C04B2235/5224C04B2235/3821C04B2235/3839C04B2235/3873C04B2235/386C04B2235/3418C04B2235/3208C04B2235/3225C04B2235/3217C04B2235/3244C04B2235/6581C04B2235/6586C04B2235/96C04B2235/77C04B2235/9607C04B35/80C04B35/14C04B2235/616C04B2235/5252C04B2235/5256B32B18/00C04B2237/38C04B2237/704C04B2237/58C04B2235/3826C04B35/624C04B35/573C04B2237/365C04B35/62849C04B35/62884C04B35/62886C04B35/571C04B35/83C04B2237/385C04B2237/341C04B2235/528C04B2235/36C04B2235/5454C08J5/04C08J5/042B29B11/16C04B35/62245C04B35/62281
Inventor 陈照峰肖七巧缪云良
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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