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Preparation method for corrugated ceramic-based composite material flat plate

A composite material and ceramic-based technology, which is applied in the field of preparation of composite material flat plates, can solve problems such as difficult molding, and achieve the effect of convenient design and realization, and wide application

Inactive Publication Date: 2014-12-03
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problem that ceramic-based corrugated sandwich structural members in the prior art are difficult to form during processing, and further provides a method for preparing a corrugated ceramic-based composite flat plate

Method used

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  • Preparation method for corrugated ceramic-based composite material flat plate
  • Preparation method for corrugated ceramic-based composite material flat plate
  • Preparation method for corrugated ceramic-based composite material flat plate

Examples

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specific Embodiment approach 1

[0023] Specific implementation mode 1: The preparation method of the corrugated ceramic matrix composite flat plate in this implementation mode is specifically carried out according to the following steps:

[0024] 1. Mix polycarbosilane, divinylbenzene and tetrahydrofuran evenly to obtain an impregnation solution; wherein, the mass ratio of divinylbenzene to polycarbosilane is (0.3~0.5): 1, and the mass ratio of tetrahydrofuran to polycarbosilane is ( 1~3): 1;

[0025] 2. Put the carbon fiber cloth into the impregnation solution obtained in step 1, and impregnate it for 1 hour under a vacuum condition with a pressure less than 0.1 MPa, then cut the impregnated carbon fiber cloth into upper and lower panel layers and core panel layers, and then place the upper and lower panels Lay 3 to 5 layers of laminates, and lay 5 to 7 layers of core panels, put them in an oven, control the temperature at 80°C to 100°C, and dry for 2h to 3h, and get the upper panel A and the lower panel fr...

specific Embodiment approach 2

[0039] Embodiment 2: This embodiment differs from Embodiment 1 in that: in step 1, the mass ratio of divinylbenzene to polycarbosilane is 0.4:1, and the mass ratio of tetrahydrofuran to polycarbosilane is 2:1. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0040] Embodiment 3: The difference between this embodiment and Embodiment 1 is that in Step 1, a constant temperature magnetic stirrer is used to mix evenly. Others are the same as in the first embodiment.

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Abstract

The invention discloses a preparation method for a corrugated ceramic-based composite material flat plate and relates to a preparation method for a composite material flat plate. The preparation method disclosed by the invention aims at solving the problem that forming is difficult in the prior art during the preparation of a ceramic-based corrugation sandwich structural plate. The preparation method comprises the following steps: I, mixing to prepare an impregnation liquid; II, preparing carbon fiber cloth into an upper panel, a lower panel and a core panel; III, filling into a corrugated plate to prepare a mould; IV, preparing an initial forming body; V, preparing a corrugated SiC composite material initial product; VI, preparing a corrugated SiC composite material intermediate; and VII, repeating the step VI to prepare the corrugated ceramic-based composite material flat plate. The corrugated ceramic-based composite material flat plate prepared by the preparation method disclosed by the invention not only has the goodness of the structure of the corrugated material, but also has the characteristics of high temperature resistance, corrosion resistance, oxidization resistance and friction resistance of the SiC ceramic. The preparation method disclosed by the invention is used for preparing the corrugated ceramic-based composite material flat plate.

Description

technical field [0001] The invention relates to a method for preparing a composite material flat plate. Background technique [0002] Most of the corrugated sandwich structural members are metal structures, which are connected by mechanical equipment, rolled or impact formed. And most of them are used in low temperature or normal temperature conditions. Its carrying capacity and high temperature resistance are relatively low. [0003] As a potential thermal protection material, ceramic-based corrugated sandwich composites have the characteristics of high load-carrying capacity, light weight, and good high-temperature resistance. Carbon fiber composite materials have the advantages of high specific strength, high specific stiffness, good corrosion resistance, and good dimensional stability in a wide temperature range. They have many advantages that metal materials cannot match. At present, they have been widely used in aerospace, aviation and other industries. field. The ...

Claims

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Application Information

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IPC IPC(8): C04B35/80C04B35/565C04B35/622
Inventor 曾涛成夙景绍东方岱宁
Owner HARBIN UNIV OF SCI & TECH
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