Fiber reinforced ceramic matrix composite heat-resistant plate and preparation method thereof

A composite material and fiber-reinforced technology, which is applied in the field of heat-resistant plates, can solve the problems of low core strength, poor mechanical strength and thermal shock resistance, and difficulty in compacting the core of large-sized bosses.

Active Publication Date: 2021-05-18
GONG YI VAN-RES INNOVATION COMPOSITE MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned problems that the core of the large-size boss is difficult to be dense, the core strength is low, and the mechanical strength and thermal shock resist...

Method used

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  • Fiber reinforced ceramic matrix composite heat-resistant plate and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A carbon fiber reinforced ceramic matrix composite material heat-resistant plate, the back of the heat-resistant plate is provided with a boss, the boss is provided with a groove, the groove is provided with an internal thread, the groove is threaded to connect a stud, and the length of the stud is Greater than the depth of the groove, the depth of the groove of the boss is 30mm, the length of the stud is 65mm, and the thread gap between the groove and the stud is filled with a ceramic matrix. The material of the heat-resistant plate is a conventional fiber-reinforced ceramic matrix composite material in the field.

[0045] The preparation method of the above-mentioned carbon fiber reinforced ceramic matrix composite material heat-resistant plate, the preparation method comprises the following steps:

[0046] (1) Preparation of prefabricated body: The fiber prefabricated body is prepared by 0 / 90°2.5D needle punching of carbon fiber (12K) non-weft cloth-mesh tire accordi...

Embodiment 2

[0061] A carbon fiber reinforced ceramic matrix composite material heat-resistant plate, the back of the heat-resistant plate is provided with a boss, the boss is provided with a groove, the groove is provided with an internal thread, the groove is threaded to connect a stud, and the length of the stud is Greater than the depth of the groove, the depth of the groove of the boss is 30mm, the length of the stud is 80mm, and the thread gap between the groove and the stud is filled with a ceramic matrix. The material of the heat-resistant plate is a conventional fiber-reinforced ceramic matrix composite material in the field.

[0062] The preparation method of the above-mentioned carbon fiber reinforced ceramic matrix composite material heat-resistant plate, the preparation method comprises the following steps:

[0063] (1) Preparation of prefabricated body: According to the component selection of carbon fiber (12K) cloth 2.5D puncture to make a prefabricated body, the diameter of...

Embodiment 3

[0081] A carbon fiber reinforced ceramic matrix composite material heat-resistant plate, the back of the heat-resistant plate is provided with a boss, the boss is provided with a groove, the groove is provided with an internal thread, the groove is threaded to connect a stud, and the length of the stud is Greater than the depth of the groove, the depth of the groove of the boss is 35mm, the length of the stud is 90mm, and the thread gap between the groove and the stud is filled with a ceramic matrix. The material of the heat-resistant plate is a conventional fiber-reinforced ceramic matrix composite material in the field.

[0082] The preparation method of the above-mentioned carbon fiber reinforced ceramic matrix composite material heat-resistant plate, the preparation method comprises the following steps:

[0083] (1) Preparation of prefabricated body: 2.5D puncture of carbon fiber cloth is selected according to the components to make a prefabricated body. The diameter of th...

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Abstract

The invention relates to a fiber reinforced ceramic matrix composite heat-resistant plate and a preparation method thereof, the back of the heat-resistant plate is provided with a boss, the boss is provided with a groove, the groove is provided with an internal thread, the groove is in threaded connection with a stud, and the length of the stud is greater than the depth of the groove. The groove is formed in the boss, the internal thread is machined in the boss, in the preparation process, after the boss is connected with the stud, the ceramic matrix is filled in the gap between the stud and the thread by repeating the dipping-curing-cracking procedure in the step (6), the boss and the stud are fixedly connected into a whole to serve as a connecting piece, and compared with a connecting method that the boss is machined to be provided with the external thread, the height and the thickness of the boss are reduced, and the problems that the core of the boss is not compact and low in strength are solved.

Description

technical field [0001] The invention belongs to the technical field of heat-resistant plates, and in particular relates to a fiber-reinforced ceramic-based composite material heat-resistant plate suitable for high-temperature, high-speed, high-pressure air scour protection and a preparation method thereof. Background technique [0002] The fiber-reinforced ceramic matrix composite material heat-resistant plate cooperates with the metal lifting bracket to deflect the exhaust flame of the engine. The front of the heat-resistant plate needs to withstand the scour of the high-temperature, high-pressure, and high-speed flame flow of the engine. The connection between the heat-resistant plate and the back metal bracket is usually done by setting through holes on the heat-resistant plate and using screws to connect with the back metal bracket. Although this connection method has high connection strength, the temperature resistance of the high-temperature alloy screws used in this co...

Claims

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Application Information

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IPC IPC(8): C04B35/80C04B35/565C04B35/622C04B41/87
CPCC04B35/565C04B35/622C04B41/87C04B41/5059C04B2235/5248C04B2235/5244C04B2235/614
Inventor 张东生吴恒曹伟潘广镇姚栋嘉刘喜宗王征杨超
Owner GONG YI VAN-RES INNOVATION COMPOSITE MATERIAL CO LTD
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