High-throughput continuous gradient fiber volume content preparation method of ceramic matrix composites

A technology of fiber volume and composite materials, which is applied in the field of preparation of ceramic matrix composite materials with high-throughput continuous gradient fiber volume content, can solve the problems of cycle and cost doubling, the influence of development process fluctuations, etc., to achieve sufficient data support, reduce The effect of R&D cost and shortened R&D cycle

Active Publication Date: 2022-03-04
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the typical parameter verification method is mainly used to investigate the influence of fiber volume content on material properties, that is, to set a number of typical fiber volume content parameters, put a certain size of test piece into the blank development, and obtain the impact data of typical fiber volume content parameters on performance. Unchecked parameters are estimated by interpolation method. If the previous parameter setting is unreasonable or the typical parameters are too few to obtain a complete and credible curve, supplementary data is required, and the supplementary data will be affected by fluctuations in the development process, and Both cycle time and cost are doubled

Method used

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  • High-throughput continuous gradient fiber volume content preparation method of ceramic matrix composites
  • High-throughput continuous gradient fiber volume content preparation method of ceramic matrix composites
  • High-throughput continuous gradient fiber volume content preparation method of ceramic matrix composites

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Effect test

Embodiment 1

[0058] (1) if image 3 Shown is a schematic diagram of the structure of the shaping tool in Example 1 of the present invention. The composite material shaping tool is designed. The molding cavity of the shaping tool has a gradient change in the thickness direction as a whole, and the gradient change is mainly provided by the trapezoidal backing plate in the cavity. The gradient tooling structure is as follows:

[0059] (a) From the profile of the tooling, the upper surface of the trapezoidal backing plate fits with the upper forming mold, and the lower surface provides a gradient to form the surface of the test piece. The surface of the forming lower mold is parallel to the forming upper mold, without gradient structure. After the trapezoidal backing plate is added between the upper and lower molds, the molding cavity forms a transverse right-angled trapezoidal structure. The lower and upper bottoms of the trapezoid are 13mm and 8mm respectively, which are the maximum and min...

Embodiment 2

[0074] (1) if Figure 4 Shown is a schematic diagram of the structure of the shaping tool in Example 2 of the present invention. The composite material shaping tool is designed. The molding cavity of the shaping tool has a gradient change in the thickness direction as a whole, and the gradient change is mainly provided by the trapezoidal backing plate in the cavity. The gradient tooling structure is as follows:

[0075] (a) From the profile of the tooling, the upper surface of the trapezoidal backing plate fits with the upper forming mold, and the lower surface provides a gradient to form the surface of the test piece. The surface of the forming lower mold is parallel to the forming upper mold, without gradient structure. After the trapezoidal backing plate is added between the upper and lower molding molds, the molding cavity forms a transverse right-angle trapezoidal structure, and the lower and upper bottoms of the trapezoid are 12mm and 10mm respectively, which are the ma...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention relates to a method for preparing a ceramic matrix composite material with a high-throughput continuous gradient fiber volume content. Through the gradient design of the blank forming tooling, the fabric with a uniform fabric structure and uniform thickness is pressed and formed in a gradient cavity, and the subsequent cycle is dense. In the process of using gradient tooling to repeatedly strengthen the size of the blank, a ceramic matrix composite material with a continuous gradient change in fiber volume content can be obtained, and through the method of the present invention, the influence of any fiber volume content within a certain range on the performance of the composite material can be quickly obtained Data, establish a data-rich influence law curve, greatly shorten the development cycle and reduce R&D costs.

Description

technical field [0001] The technology relates to a preparation method of a ceramic matrix composite material with a high-throughput continuous gradient fiber volume content, and belongs to the field of functional composite materials and technology. Background technique [0002] Due to its high temperature resistance, light weight and high strength, ceramic matrix composites have very important application value in the aerospace field. At present, ceramic matrix composite fabrics with thin-walled special-shaped structures often adopt a two-dimensional lay-up-stitching structure. The fiber volume content of fabrics in composite materials has an important effect on the mechanical, thermal, and electromagnetic properties of ceramic matrix composites. Impact. At present, the typical parameter verification method is mainly used to investigate the influence of fiber volume content on material properties, that is, to set a number of typical fiber volume content parameters, put a ce...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B28B23/00B28B1/00B32B9/00B32B9/04B32B5/06B32B37/02B32B38/08B32B37/06B32B38/00B32B33/00
CPCB28B23/00B28B1/008B32B5/02B32B5/26B32B5/06B32B37/02B32B38/08B32B37/06B32B38/0036B32B33/00B32B2038/008B32B38/1808B32B2250/20B32B2262/106B32B2038/0076
Inventor 李军平龚晓冬马登浩张国兵孙新
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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