Cf/SiC dot matrix composite flat plate with rectangular pyramid structure and preparation method for flat plate

A composite material and quadrangular pyramid technology, which is applied in the field of lattice composite materials and its preparation, can solve the problems that ceramic-based lattice composite materials, metal-based and resin-based lattice materials cannot meet the needs, etc.

Inactive Publication Date: 2013-01-30
HARBIN UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the problem that the existing metal-based and resin-based lattice materials cannot meet the requirements, and it is difficult to realize the preparation of ceramic-based lattice composite materials in the prior art, and provides a quadrangular pyramid configuration C f / SiC lattice composite flat plate and preparation method thereof

Method used

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  • Cf/SiC dot matrix composite flat plate with rectangular pyramid structure and preparation method for flat plate
  • Cf/SiC dot matrix composite flat plate with rectangular pyramid structure and preparation method for flat plate
  • Cf/SiC dot matrix composite flat plate with rectangular pyramid structure and preparation method for flat plate

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specific Embodiment approach 1

[0023] Specific embodiment 1: This embodiment is quadrangular pyramid configuration C f / SiC lattice composite material plate, composed of upper panel 1, lower panel 2, and quadrangular pyramid cells periodically arranged between the upper and lower panels with lattice core 3, characterized in that the upper panel 1 And the lower panel 2 is composed of C f / SiC composite material, the lattice core 3 is made of C f / SiC composite rods.

[0024] The quadrangular pyramid configuration C provided by this embodiment f / SiC lattice composite material plate preparation method to prepare quadrangular pyramid configuration C f / SiC lattice composite material flat plate, which not only has the excellent characteristics of lattice structure of lattice material, but also has the characteristics of high temperature resistance, oxidation resistance, corrosion resistance and friction resistance of SiC ceramics. At the same time, because carbon fiber is used as a framework material, it also reduce...

specific Embodiment approach 2

[0025] Specific embodiment 2: This embodiment is a quadrangular pyramid configuration C f The preparation method of / SiC lattice composite material plate is specifically completed according to the following steps:

[0026] 1. Mix polycarbosilane, divinylbenzene, xylene and tetrahydrofuran to obtain an impregnation solution; wherein the mass ratio of divinylbenzene to polycarbosilane is (0.3~0.5):1, and the mass of xylene and polycarbosilane The ratio is (0.05~0.1):1, and the mass ratio of tetrahydrofuran to polycarbosilane is (1~3):1;

[0027] 2. Punch m rows×n columns of array through holes on the carbon fiber cloth I to obtain a perforated carbon fiber cloth I; punch (m+1) rows×(n+1) columns of array through holes on the carbon fiber cloth II, Obtain the through-hole carbon fiber cloth II; the through holes in the first row and the first column of the array of through holes on the through-hole carbon fiber cloth I are A 11 , The through holes in the first row and the second colum...

specific Embodiment approach 3

[0037] Specific embodiment three: This embodiment is different from the specific embodiment two in that: the molecular weight of the polycarbosilane described in step one is 1000-1500. Others are the same as the second embodiment.

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Abstract

The invention discloses a Cf/SiC dot matrix composite flat plate with a rectangular pyramid structure and a preparation method for the flat plate, and relates to the field of dot matrix composite materials and preparation methods thereof. The Cf/SiC dot matrix composite flat plate mainly solves the problems that the conventional metal-based and resin-based dot matrix materials cannot meet the requirement and a ceramic-based dot matrix composite material is difficult to prepare in the prior art. The Cf/SiC dot matrix composite flat plate with the rectangular pyramid structure consists of an upper panel, a lower panel, and rectangular pyramid cells positioned between the upper and lower panels and arranged periodically in a dot matrix core form. The preparation method comprises the following steps of: preparing a skeleton of the Cf/SiC dot matrix composite flat plate with the rectangular pyramid structure by adopting a process of inserting polycarbosilane soaked carbon fibers into polycarbosilane soaked carbon fiber cloth, soaking the skeleton into polycarbosilane, curing, cracking, and thus obtaining the Cf/SiC dot matrix composite flat plate with the rectangular pyramid structure. The flat plate is applied in the fields of noise reduction, electromagnetic radiation shielding, impact resistance, heat insulation and heat conduction reduction.

Description

Technical field [0001] The invention relates to the field of lattice composite materials and preparation methods thereof. Background technique [0002] Lattice material is an ultra-light ordered material that simulates the spatial lattice structure of crystal materials. Its basic feature is that the nodes and the connecting rods between the nodes are built into a three-dimensional grid structure unit similar to a unit cell. The material as a whole is an ordered structure composed of multiple repeated units. In this structure, the voids in the lattice material grid have no fillers for carrying, and only the connecting rods play a role in supporting the entire lattice material. This design saves a lot of quality while ensuring the specific stiffness and specific strength of the material. Adjusting the positions of nodes and connecting rods can control the structure and mechanical properties of lattice materials. At the same time, the gap between the lattice material grids can be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/80C04B35/622
Inventor 曾涛方岱宁成夙严实
Owner HARBIN UNIV OF SCI & TECH
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