A kind of ceramic fiber mixed braided fabric reinforced ceramic matrix composite material and preparation method thereof

A technology of ceramic fibers and composite materials, which is applied in the field of high-temperature wave-transmitting materials, can solve the problems of high cost, poor weaving, and high brittleness of silicon nitride fibers, and achieve the effect of high brittleness, poor weaving, and good weaving

Active Publication Date: 2021-02-26
北京玻钢院复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, silicon nitride fibers are brittle and poor in weaving, and the market price is about 40 times that of quartz fibers. If all silicon nitride fibers are used to reinforce nitride ceramic matrix composites, the cost is obviously too high

Method used

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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  • A kind of ceramic fiber mixed braided fabric reinforced ceramic matrix composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The method for preparing a ceramic fiber mixed braided fabric reinforced ceramic matrix composite material in this embodiment comprises the following steps:

[0029] S1. According to the mass ratio of quartz fiber: silicon nitride fiber is 1:0.2, use three-way orthogonal weaving process to weave quartz fiber and silicon nitride fiber to obtain ceramic fiber mixed weaving fabric;

[0030] S1a. Submerging the ceramic fiber blended fabric obtained in step S1 in absolute ethanol solvent at 5 MPa and 70°C for 10 hours, and then drying at 80°C for 8 hours;

[0031] S2. The method of vacuum infusion is used to impregnate the ceramic fiber mixed fabric with liquid borazine, specifically, the treated ceramic fiber mixed fabric obtained in step S1a is placed in a closed container, and the container is vacuumized Treatment, so that the air in the fabric is exhausted, and then the liquid borazine is sucked into the airtight container;

[0032] S3. Transfer the impregnated ceramic ...

Embodiment 2

[0036]The method for preparing a ceramic fiber mixed braided fabric reinforced ceramic matrix composite material in this embodiment comprises the following steps:

[0037] S1. According to the mass ratio of quartz fiber: silicon nitride fiber is 1:1, the three-way orthogonal weaving process is used to weave quartz fiber and silicon nitride fiber to obtain ceramic fiber mixed weaving fabric;

[0038] S1a. The ceramic fiber blended fabric obtained in step S1 was immersed in absolute ethanol solvent under the condition of 3MPa and 90°C for 6 hours, and then dried at 100°C for 5 hours;

[0039] S2. The method of vacuum infusion is used to impregnate the ceramic fiber mixed fabric with liquid borazine, specifically, the treated ceramic fiber mixed fabric obtained in step S1a is placed in a closed container, and the container is vacuumized Treatment, so that the air in the fabric is exhausted, and then the liquid borazine is sucked into the airtight container;

[0040] S3. Transfer...

Embodiment 3

[0044] The method for preparing a ceramic fiber mixed braided fabric reinforced ceramic matrix composite material in this embodiment comprises the following steps:

[0045] S1. According to the mass ratio of quartz fiber: silicon nitride fiber is 1:0.6, the three-way orthogonal weaving process is used to weave quartz fiber and silicon nitride fiber to obtain ceramic fiber mixed weaving fabric;

[0046] S1a. The ceramic fiber blended fabric obtained in step S1 was immersed in a mixed solvent of absolute ethanol and acetone under the conditions of 10MPa and 80°C for 3 hours, and then dried at 120°C for 10 hours;

[0047] S2. The method of vacuum infusion is used to impregnate the ceramic fiber mixed fabric with liquid borazine, specifically, the treated ceramic fiber mixed fabric obtained in step S1a is placed in a closed container, and the container is vacuumized Treatment, so that the air in the fabric is exhausted, and then the liquid silazaborane precursor is sucked into the...

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Abstract

The invention provides a ceramic fiber mixed braid reinforced ceramic matrix composite material and a preparation method thereof. The reinforcing material of the ceramic fiber mixed braided reinforced ceramic matrix composite material is a mixed braided fabric of quartz fiber and silicon nitride fiber, and the matrix material is nitrogen. Boron oxide ceramics or silicon nitride boron ceramics. In the blended fabric of quartz fiber and silicon nitride fiber, the mass ratio of quartz fiber to silicon nitride fiber is 1: (0.2‑5). In the ceramic fiber mixed braided reinforced ceramic matrix composite material and its preparation method, quartz fibers and silicon nitride fibers are braided into a mixed braided fabric, and as a reinforcing material for a composite material, the mixed braided fabric retains the advantages of a single fiber, so that it can be passed through Increase the sintering temperature of the nitride ceramic matrix composite material, give full play to the characteristics of the nitride ceramic matrix material, and the prepared composite material shows excellent performance in terms of mechanical properties, temperature resistance, and dielectric properties.

Description

technical field [0001] The invention belongs to the technical field of high-temperature wave-transmitting materials, and in particular relates to a ceramic fiber mixed braided reinforced ceramic matrix composite material and a preparation method thereof. Background technique [0002] With the development of hypersonic missiles and re-entry vehicles, the high temperature resistance and impact resistance of radome are facing great challenges. Nitride ceramic matrix composite materials such as silicon nitride and boron nitride are gradually being used in the field of high temperature wave-transmitting materials. show its advantages. Nitride ceramic matrix is ​​a kind of strong covalent bond compound, which has excellent high temperature resistance, oxidation resistance, ablation resistance, thermal shock resistance, chemical corrosion resistance and good high temperature dielectric and wave transmission properties. In the field of high-temperature wave-transmitting materials, ...

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): C04B35/5835C04B35/596C04B35/80C04B35/622C04B35/626C04B35/64
CPCC04B35/583C04B35/584C04B35/622C04B35/6269C04B35/64C04B2235/483C04B2235/486C04B2235/5232C04B2235/524C04B2235/5256C04B2235/616C04B2235/656C04B2235/6567C04B2235/6581C04B2235/96
Inventor 高龙飞李松彭喆柴笑笑张雪梅安楠肖沅谕路秋勉武元娥刘红影
Owner 北京玻钢院复合材料有限公司
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