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Method for preparing carbon/silicon carbide complex fiber-reinforced aluminum-based foam material

A composite fiber and reinforced aluminum-based technology, which is applied in the direction of carbon fiber, fiber treatment, fiber chemical characteristics, etc., can solve the problems of poor wettability, uneven dispersion, poor wettability of carbon fiber, etc., and achieve improved shock absorption and uniform structure , The effect of uniform and stable bubbles

Inactive Publication Date: 2014-08-13
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the wettability of carbon fiber and liquid metal is relatively poor, which can easily cause problems such as poor wettability and uneven dispersion of carbon fiber in the matrix material.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Preparation of carbon / silicon carbide composite fibers

[0028] The industrial product polydimethylsilane and polyvinyl chloride are used as raw materials, wherein polydimethylsilane accounts for 92% of the total mass of raw materials, and polyvinyl chloride accounts for 8% of the total mass of raw materials, which are added into a three-necked flask and mixed uniformly. In high purity N 2 Under the protection of co-pyrolysis reaction. When the reactant melted and decomposed into a homogeneous liquid, it was kept at 420°C for 10 hours, and then cooled to room temperature. The product was dissolved in toluene, filtered and distilled to obtain a brown polycarbosilane solid. Then in N 2 After being melted under protection, high-speed spinning is carried out. After the air does not melt, the treated polycarbosilane fiber is placed in a quartz tube protected by nitrogen in a tubular diffusion furnace, and the temperature is raised to 1250°C at a rate of 100°C / h. Afte...

Embodiment 2

[0035] (1) Preparation of carbon / silicon carbide composite fibers

[0036] The industrial polydimethylsilane and polyvinyl chloride are used as raw materials, wherein the polydimethylsilane accounts for 95% of the total mass of the raw materials, and the polyvinyl chloride accounts for 5% of the total mass of the raw materials, which are added into a three-necked flask and mixed uniformly. In high purity N 2 Under the protection of co-pyrolysis reaction. When the reactant melted and decomposed into a homogeneous liquid, it was kept at 450°C for 10 hours, and then cooled to room temperature. The product was dissolved in toluene, filtered and distilled to obtain a brown polycarbosilane solid. Then in N 2 After being melted under protection, high-speed spinning is carried out. After the air does not melt, the treated polycarbosilane fiber is placed in a quartz tube protected by nitrogen in a tubular diffusion furnace, and the temperature is raised to 1250°C at a rate of 200°C / h....

Embodiment 3

[0043] (1) Preparation of carbon / silicon carbide composite fibers

[0044] The industrial product polydimethylsilane and polyvinyl chloride are used as raw materials, wherein polydimethylsilane accounts for 93% of the total mass of raw materials, and polyvinyl chloride accounts for 7% of the total mass of raw materials, which are added into a three-necked flask and mixed uniformly. In high purity N 2 Under the protection of co-pyrolysis reaction. When the reactant melted and decomposed into a homogeneous liquid, it was kept at 440°C for 6 hours, and then cooled to room temperature. The product was dissolved in toluene, filtered and distilled to obtain a brown polycarbosilane solid. Then in N 2 After being melted under protection, high-speed spinning is carried out. After the air does not melt, the treated polycarbosilane fiber is placed in a quartz tube protected by nitrogen in a tubular diffusion furnace, and the temperature is raised to 1250°C at a rate of 150°C / h. After...

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Abstract

The invention discloses a method for preparing a carbon / silicon carbide complex fiber-reinforced aluminum-based foam material. According to the method, polydimethylsilane and polyvinyl chloride are taken as the raw materials, the polydimethylsilane accounts for 92-95% of the mass of the raw materials, and the polyvinyl chloride accounts for 5-8% of the mass of the raw materials; and the complex fiber are firstly subjected to the surface treatment to improve the homodisperse and wettability in metal melt effectively, carbon / silicon carbide complex fibers are directly added into a base metal melt through a liquid-state metal stirring technology, so that the complex fibers are uniformly dispersed in the metal melt and are compounded with the metal melt. Due to the addition of surface active elements like calcium metal, magnesium as well as rare earth elements, the surface tension of the aluminum melt is regulated, and bubbles generated in the foaming process are more stable and uniform. The carbon / silicon carbide complex fiber-reinforced aluminum-based foam material has high strength, high toughness, high absorption and high damping force characteristic.

Description

technical field [0001] The invention belongs to the technical field of metal-based composite materials, and in particular relates to a preparation method of carbon / silicon carbide composite fiber-reinforced aluminum-based foam materials. Background technique [0002] Foamed metal materials, especially foamed aluminum-based materials, are a new type of functional material developed in recent decades. Due to their porous structure and metal characteristics, they have low relative density, large specific surface area, high specific mechanical properties, and good damping and shock absorption properties. And other characteristics, in aviation, aerospace, transportation, construction and other fields have a wide range of application prospects. Compared with ordinary metal materials, carbon fiber reinforced metal matrix composites have high specific strength and specific modulus; compared with resin matrix composites, they have high heat resistance and dimensional stability; compa...

Claims

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Application Information

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IPC IPC(8): C22C47/04C22C47/08C22C49/06C22C49/14D01F8/18D06M11/83D06M11/82D06M11/60D06M11/65D06M101/40C22C101/10C22C101/14C22C121/02
Inventor 罗震敖三三冯梦楠谈辉段瑞
Owner TIANJIN UNIV
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