High-toughness shell-like brick mud structure ceramic-based composite material and preparation method thereof

A composite material and shell imitation technology, which is applied in ceramic layered products, chemical instruments and methods, lamination devices, etc., can solve the problems of inability to prepare large-sized components, uncontrollable microstructures, and difficulty in densification, and achieves overcoming difficulties. Effects of densification, increased work of fracture, increased and toughness

Inactive Publication Date: 2020-05-12
NANJING INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art, provide a high-tough imitation shell brick mud structure ceramic matrix composite material and its preparation method, and solve the difficulty of densification and poor toughness of the existing shell imitation brick mud structure ceramic matrix composite material , uncontrollable microstructure and the inability to prepare large-scale components

Method used

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  • High-toughness shell-like brick mud structure ceramic-based composite material and preparation method thereof
  • High-toughness shell-like brick mud structure ceramic-based composite material and preparation method thereof
  • High-toughness shell-like brick mud structure ceramic-based composite material and preparation method thereof

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Embodiment 1

[0030] A high-toughness shell-like brick-mud structure ZrO 2 The preparation method of / epoxy resin composite material, comprises the following steps:

[0031] Step 1: Purchase 100mm×100mm×0.3mm ZrO 2 Ceramic flakes;

[0032] Step 2: ZrO 2 As for the ceramic sheet on the nanosecond laser processing table, adjust the horizontality of the table so that the ZrO 2 The surface of the ceramic sheet coincides with the focal plane of the laser, and the error does not exceed 0.1mm;

[0033] Step 3: Draw a honeycomb regular hexagonal grid in the nanosecond laser control interface software, with a side length of 1mm, set the laser power to 5W, the processing speed to 100mm / s, and the processing times to 50 times;

[0034] Step 4: Turn on the laser control switch, in the ZrO 2 Engraving regular hexagonal honeycomb grids on the ceramic sheet, ZrO with a grid depth of about 0.2mm (grid depth / ceramic sheet thickness ≈ 0.67) 2 Ceramic honeycomb sheet;

[0035] Step 5: Add ZrO 2 Cool th...

Embodiment 2

[0041] A high-tough imitation shell brick-mud structure Si 3 N 4 / The preparation method of polyurethane composite material, comprises the following steps:

[0042] Step 1: Buy 50mm x 50mm x 0.5mm Si 3 N 4 Ceramics;

[0043] Step 2: Si 3 N 4 The ceramic sheet is placed on the grinding and polishing machine, and the Si 3 N4 The thickness of the ceramic sheet is ground to 0.3mm, and ultrasonically cleaned for later use;

[0044] Step 3: Si with a thickness of 0.3mm 3 N 4 The ceramic sheet is placed on the nanosecond laser processing table, and the level of the table is adjusted so that Si 3 N 4 The surface of the ceramic sheet coincides with the focal plane of the laser, and the error does not exceed 0.1mm;

[0045] Step 4: Draw a honeycomb regular hexagonal grid in the nanosecond laser control interface software, with a side length of 2mm, set the laser power to 5W, the processing speed to 50mm / s, and the processing times to 30 times;

[0046] Step 5: Turn on the la...

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Abstract

The invention discloses a high-toughness shell-like brick mud structure ceramic-based matrix composite material and a preparation method thereof. The preparation method comprises the following steps:a nanosecond laser device is used for carving impermeable regular hexagonal grids on a ceramic wafer, cooling and polishing are performed, and then ultrasonic cleaning is conducted; adhesive resin anda curing agent are mixed, and are defoamed in vacuum to obtain a resin adhesive; the surface of the carved ceramic wafer is uniformly coated with the resin adhesive, and then coated ceramic wafers are sequentially stacked in a staggered manner to obtain a brick mud structure; and the brick mud structure is subjected to pressure retaining to obtain the high-toughness shell-like brick mud structureceramic-based composite material. The problems that an existing ceramic-based composite material of a shell-like brick mud structure is difficult to densify, poor in toughness and uncontrollable in microstructure and cannot be used for preparing large-size components are solved.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a high-toughness imitation shell brick-mud structure ceramic-based composite material and a preparation method thereof. Background technique [0002] Ceramic materials are ideal candidates for impact resistance due to their high strength, high modulus, high hardness, and low density. However, ceramic materials have poor toughness and are prone to catastrophic failure when impacted. In order to ensure the reliability of the structure, a multilayer composite structure of ceramic blocks, metal plates and fiberboards is usually used. Although this type of structure can realize the complementary advantages of the mechanical properties of various materials, it is still very limited in terms of light weight and impact resistance. [0003] In recent years, shell-like "brick-mud structure" ceramic matrix composites based on bionics design have received widespread a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B37/12B32B38/10B32B18/00
CPCB32B18/00B32B37/12B32B38/10
Inventor 王安哲朱军李振红于皓王昕鹏汪文宣朱惠民甘强
Owner NANJING INST OF TECH
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