Preparation method of fiber reinforced phosphate high-temperature-resistant composite material

A composite material and fiber reinforced technology, which is applied in the field of preparation of high temperature resistant composite materials, can solve the problems of many raw materials, high manufacturing cost, complicated preparation process, etc., and achieve the effect of low thermal conductivity

Active Publication Date: 2013-05-08
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation process of existing fiber-reinforced phosphate composite materials is relatively complicated, and requires many raw materials, and the manufactur

Method used

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  • Preparation method of fiber reinforced phosphate high-temperature-resistant composite material
  • Preparation method of fiber reinforced phosphate high-temperature-resistant composite material

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Example 1

[0021] This embodiment includes the following steps:

[0022] (1) Preparation of carbon fiber preform: weave carbon fiber into plain weave cloth with a fiber volume fraction of 50%;

[0023] (2) Pretreatment of carbon fiber preform: The plain weave obtained in step (1) is placed in a vacuum furnace, heated to 1300°C in an argon atmosphere, kept for 2 hours, and cooled to room temperature, then taken out for use;

[0024] (3) Coating, phosphoric acid impregnation and curing of carbon fiber preforms: first prepare a slurry of zirconium phosphate powder with an average particle size of 50 nanometers with water (the concentration of zirconium phosphate in the slurry is 35wt%), and the slurry Brush on the carbon fiber cloth treated in step (2) (the thickness of the coating is 1-10 microns), layer the brushed carbon fiber cloth, and then perform the puncture operation, heat it to 550°C, keep it warm for 3 hours; then vacuum (vacuum) Degree 150Pa) Inhale 20wt% phosphoric ...

Example Embodiment

[0028] Example 2

[0029] This embodiment includes the following steps:

[0030] (1) Preparation of carbon fiber preform: the carbon fiber is prepared into a preform with a volume fraction of 10% through a needle and puncture process;

[0031] (2) Pre-treatment of carbon fiber preform: Place the preform obtained in step (1) in a vacuum furnace, heat up to 1300°C in an argon atmosphere, keep it for 1 hour, and lower to room temperature, then take it out for later use;

[0032] (3) Impregnating and curing the carbon fiber preform: Put the fiber preform treated in step (2) into the impregnation tank, and suck in a 30wt% aluminum dihydrogen phosphate solution in a vacuum until the fabric is submerged, and soak for 60 minutes , And then heat to 300°C at a heating rate of 3°C / min and keep it warm for 3h to crosslink and solidify the materials in the fabric;

[0033] (4) High-temperature treatment: Put the fiber preform obtained in step (3) into a high-temperature furnace, heat it at 1000°C u...

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Abstract

The invention relates to a preparation method of a fiber reinforced phosphate high-temperature-resistant composite material. The preparation method comprises the following steps of: (1) preparing a fiber preform; (2) pretreating the fiber preform; (3) soaking or coating the fiber preform, and curing the fiber preform: putting the fiber preform into a soaking tank, sucking a phosphate solution in vacuum until a fabric is submerged, soaking the fabric for more than or equal to 10 minutes, heating to 50-500 DEG C, and preserving the heat for 1-60 hours; or soaking or coating the fiber preform by using an aluminum, zirconium or magnesium inorganic salt solution, heating to more than or equal to 500 DEG C, preserving the heat for more than or equal to 2 hours, sucking a phosphoric acid solution in vacuum until the fabric is submerged, soaking the fabric for more than or equal to 10 minutes, heating to more than or equal to 500 DEG C, and preserving the heat for more than or equal to 2 hours; and (4) performing high-temperature treatment to obtain the fiber reinforced phosphate high-temperature-resistant composite material. The composite material prepared by the method can be widely used in high-temperature resistance, bearing, wave transmitting, corrosion resistance and the like.

Description

technical field [0001] The invention relates to a preparation method of a high-temperature-resistant composite material, in particular to a preparation method of a fiber-reinforced phosphate high-temperature-resistant composite material. Background technique [0002] At present, a variety of fiber-reinforced high-temperature resistant composite materials have been successfully developed, and have been widely used in aerospace, aviation, automobile, metallurgy, petroleum, chemical, machinery, energy and other fields. For example, carbon fiber or glass fiber reinforced resin matrix composites have the advantages of low cost, high strength, high modulus, etc., and are widely used in civil aerospace, ships and other civilian fields. In order to make up for the lack of high temperature resistance of resin-based composite materials, carbon fiber reinforced carbon composite materials have been invented, and have been successfully applied to thermal structures such as aircraft brake...

Claims

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Application Information

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IPC IPC(8): C04B28/34
Inventor 曹峰丁扬张长瑞
Owner NAT UNIV OF DEFENSE TECH
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