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Ceramic composite material forming method and ceramic composite material

A technology of ceramic composite material and molding method, applied in ceramic molding machines, manufacturing tools and other directions, can solve the problems of insufficient density of ceramic composite materials, increased production cost, prolonged production cycle, etc., to improve the complex molding process and save work costs. , the effect of reducing workload

Active Publication Date: 2017-10-17
湖南飞航材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially in the impregnation process of step (2), since the slurry is difficult to impregnate into the interior of the preform, the impregnation efficiency is low, and often needs to be repeated dozens of times, which not only greatly increases the workload, but also prolongs the production cycle and increases the production cost.
Moreover, in general, the density of the ceramic composite material is increased by increasing the number of immersion times, but even after dozens of immersion times, problems such as insufficient internal density of the ceramic composite material are prone to occur.

Method used

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  • Ceramic composite material forming method and ceramic composite material

Examples

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Comparison scheme
Effect test

Embodiment 1

[0074] A method for forming a ceramic composite material, comprising the steps of:

[0075] (a) impregnating the fibers in the slurry;

[0076] Specifically, the preparation method of the slurry is mainly prepared according to the following steps:

[0077] Quartz powder (SiO 2 content is 99.9%), according to the weight ratio of 1:1:2:2:3:1, add to the high-purity silica sol with a solid content of 23%, according to the principle that the solid content of the slurry is 76% Add an appropriate amount of quartz powder, then add lactic acid according to 1% of the weight of the slurry, mix the above materials, and ball mill for 3.5 hours at a speed of 450r / min in a ball mill tank to obtain a slurry;

[0078] Put the slurry in an impregnation tank with ultrasonic dispersion function, place the fiber to be woven into the slurry for impregnation, turn on the ultrasonic dispersion switch, and perform ultrasonic dispersion on the slurry and fiber at the same time, so that the inside of...

Embodiment 2

[0086] A method for forming a ceramic composite material, comprising the steps of:

[0087] (a) impregnating the fibers in the slurry;

[0088] Specifically, the preparation method of the slurry is mainly prepared according to the following steps:

[0089] Silicon carbide powder with a particle size of 200 mesh, 300 mesh, 500 mesh, 700 mesh, 900 mesh, 1100 mesh and 1200 mesh respectively, according to the weight ratio of 1:1:1:2:2:3:1, add To the precursor solution with a solid content of 20%, add an appropriate amount of silicon carbide powder according to the principle that the solid content of the slurry is 70%, and then add lactic acid according to 1% of the weight of the slurry. After mixing the above materials, put them in a ball mill tank Grind for 3h at a speed of 500r / min to obtain a slurry;

[0090] Put the slurry in an impregnation tank with ultrasonic dispersion function, place the fiber to be woven into the slurry for impregnation, turn on the ultrasonic dispers...

Embodiment 3

[0098] A method for forming a ceramic composite material, comprising the steps of:

[0099] (a) impregnating the fibers in the slurry;

[0100] Specifically, the preparation method of the slurry is mainly prepared according to the following steps:

[0101] Quartz powder (SiO 2 content is 99.9%), according to the weight ratio of 1:1:2:2:3:1, add to the high-purity silica sol with a solid content of 23%, according to the principle that the solid content of the slurry is 71% Add an appropriate amount of quartz powder, and then add lactic acid according to 1% of the weight of the slurry. After mixing the above materials, ball mill at a speed of 450 r / min for 3.5 hours in a ball mill jar to obtain a slurry.

[0102] Put the slurry in an impregnating tank with ultrasonic dispersion function, place the fiber to be woven into the slurry to impregnate, turn on the ultrasonic dispersion switch, so that the inside of the fiber is fully infiltrated with the slurry.

[0103] (b) Mold pr...

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Abstract

The invention provides a ceramic composite material forming method and a ceramic composite material, and relates to the technical field of ceramic composite material forming. According to the forming method, fiber is soaked into a sizing agent in advance, weaving is directly performed with the sizing agent, the sizing agent is continuously pouring into gaps formed between fiber during weaving, a prefab formed by weaving does not need soaking, and drying and sintering are directly performed, so that the ceramic composite material can be obtained. The forming method cancels a required process of repeatedly soaking the prefab in the traditional forming technology, greatly reduces the workload, shortens the production period, further reduces the operation cost, and improves the defects of complex forming technology, high cost and long production period in the traditional forming technology; the ceramic composite material prepared through the forming method can easily meet the required density. The invention further provides a ceramic composite material. The ceramic composite material has good density.

Description

technical field [0001] The invention relates to the technical field of forming ceramic composite materials, in particular, to a forming method of ceramic composite materials and ceramic composite materials. Background technique [0002] Fiber-reinforced ceramic composites refer to materials made of fibers as reinforcements and ceramics as a matrix. The introduction of high-performance fibers can toughen and strengthen ceramics, prevent cracks, and improve the mechanical properties of ceramics. The formed ceramic composites have excellent properties such as high temperature resistance, high strength, high modulus, ablation resistance, and erosion resistance. It is widely used in aerospace, chemical industry, metallurgy and other fields. It can be used as ceramic heat protection material, high temperature wave transparent radome, high temperature wave transparent antenna window, metallurgical crucible, flame nozzle, etc. [0003] However, at present, due to the complex moldin...

Claims

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Application Information

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IPC IPC(8): C04B35/80C04B35/84C04B35/14C04B35/565C04B35/10C04B35/48C04B35/185C04B35/584C04B35/583C04B35/56C04B35/58B28B23/02
CPCB28B23/02C04B35/10C04B35/14C04B35/185C04B35/48C04B35/5622C04B35/565C04B35/58078C04B35/583C04B35/584C04B35/80C04B35/803C04B35/806C04B2235/5228C04B2235/524C04B2235/5244C04B2235/5248
Inventor 李正申
Owner 湖南飞航材料科技有限公司
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