A kind of short carbon fiber aluminum matrix composite material and preparation method thereof

An aluminum-based composite material, short carbon fiber technology, applied in metal material coating process, liquid chemical plating, coating and other directions, can solve the problems of poor metal-based carbon fiber performance, etc. growing effect

Active Publication Date: 2020-02-14
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above prior art, the present invention provides a short carbon fiber aluminum matrix composite material preparation method to solve the technical problem of poor performance of the metal matrix carbon fiber prepared by the traditional preparation method

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  • A kind of short carbon fiber aluminum matrix composite material and preparation method thereof
  • A kind of short carbon fiber aluminum matrix composite material and preparation method thereof
  • A kind of short carbon fiber aluminum matrix composite material and preparation method thereof

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Embodiment 1

[0029] Pre-preparing a short carbon fiber aluminum matrix composite material, including 9wt% copper-plated short carbon fiber and 91wt% aluminum powder in the material, wherein the length of the copper-plated short carbon fiber is 2-3 mm, the diameter is less than 20 μm, and the thickness of the copper coating is 1um; aluminum is aluminum powder with a particle size of 20-100um. The preparation method comprises the following steps:

[0030] (1) Put the T-700 original short carbon fiber into a box-type resistance furnace, conduct high-temperature treatment on the carbon fiber at 400 °C, keep it warm for 1 hour, and then cool the furnace to room temperature. Use 250ml of concentrated HNO with a volume fraction of 65% to 68% 3 Acidify 3 g of degummed short carbon fibers. Maintain the temperature at 60° C., magnetically stir for 1.5 h, and then wash with deionized water until neutral. Add uniformly dispersed short carbon fibers into the sensitization solution for sensitization ...

Embodiment 2

[0035] (1) Put T-700 original short carbon fibers into a box-type resistance furnace, and perform high-temperature treatment on the carbon fibers at 480°C, keep the temperature for 50 minutes, and then cool the furnace to room temperature. Use 250ml of concentrated HNO with a volume fraction of 65% to 68% 3 Acidify 3 g of degummed short carbon fibers. Maintain the temperature at 55°C, stir magnetically for 100 min, and then wash with deionized water until neutral. Add uniformly dispersed short carbon fibers into the sensitization solution for sensitization treatment. The sensitization solution consists of 25g / L SnCl 2 2H 2 O solution and 40mL / L HCl solution are mixed at a volume ratio of 2:1. The sensitization treatment adopts the method of "7min ultrasonic oscillation-5min magnetic stirring-5min standing at room temperature", followed by deionized washing until neutral. The short carbon fibers after sensitization treatment were placed in silver ammonia solution for activat...

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Abstract

The invention discloses a short carbon fiber aluminum based composite material and a preparation method thereof. The preparation method comprises the steps of surface processing, chemical copper plating, mixing, sintering, etc.; the prepared short carbon fiber aluminum based composite material comprises the following components in percentage by mass: 8-10% of copper plating short carbon fibers, and 90-92% of aluminum powder, wherein the length of the copper plating short carbon fibers is 2-3mm, and the diameter is less than 20 microns; the thickness of a copper plating layer is 1 micron; the particle size of the aluminum powder is 20-100 microns; the measurement result shows that the density of the short carbon fiber reinforced aluminum based composite material is 98.5%, the hardness is 92.38Mpa, the tensile strength is 202.05Mpa, and the bending resistance is 376.05Mpa. With the adoption of the method, the technical problem of low dispersity of short carbon fibers in the composite material can be solved; the prepared short carbon fiber aluminum based composite material is outstanding in performances and meets the use demands of special situations.

Description

technical field [0001] The invention belongs to the technical field of carbon fiber composite material preparation, and in particular relates to a short carbon fiber aluminum-based composite material and a preparation method thereof. Background technique [0002] Today's conventional materials are struggling to cope with the performance required by technological advancements. In the search for advanced materials, researchers have innovated various material systems, with metal matrix composites being one of the most prominent in recent decades. Due to the unusual combination of stiffness, strength-to-weight ratio, high-temperature performance and hardness, their applications in aircraft technology, the electronics industry and other fields are growing significantly. Among them, the aluminum matrix composite material is considered as an excellent metal matrix composite material, which is relatively low in cost due to its low density and ease of production. The research on al...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C47/04C22C47/14C22C49/06C22C49/14C23C18/40C23C18/18C22C101/10C22C121/02
CPCC22C47/04C22C47/14C22C49/06C22C49/14C23C18/1893C23C18/405
Inventor 雷霆王禹詹振翔
Owner CENT SOUTH UNIV
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