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A kind of slurry for extruding 3D printing fiber-reinforced metal matrix composite material and preparation method thereof

A fiber reinforced, composite material technology, applied in metal processing equipment, additive processing, process efficiency improvement, etc., can solve problems such as changing the direction of fiber arrangement

Active Publication Date: 2022-07-12
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a fiber reinforced metal matrix composite material slurry for extrusion 3D printing, to overcome the influence of thermal stress and the removal of dispersants and binders in the existing extrusion 3D printing preparation methods The shortcoming of changing the direction of fiber arrangement during the process, also provides the above-mentioned preparation method of fiber-reinforced metal matrix composites for extrusion 3D printing, which can maintain the arrangement of fibers in the metal matrix to improve the performance of CF / Al composites

Method used

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  • A kind of slurry for extruding 3D printing fiber-reinforced metal matrix composite material and preparation method thereof
  • A kind of slurry for extruding 3D printing fiber-reinforced metal matrix composite material and preparation method thereof
  • A kind of slurry for extruding 3D printing fiber-reinforced metal matrix composite material and preparation method thereof

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Embodiment

[0029] 1. Select 7075 aluminum alloy powder with an average length of 200 μm, a diameter of 7 μm, an average particle size of 15 μm, and D(90)<30 and polylactic acid of 4032D type.

[0030] 2. Preparation of a slurry for extruding a fiber-reinforced metal matrix composite material for 3D printing, using the above carbon fiber, aluminum alloy powder, polylactic acid and dichloromethane as raw materials, including the following steps:

[0031] A, first soak 2g polylactic acid in 8g methylene chloride for 24h, then, ultrasonically treat 30min to make polylactic acid fully dissolve in methylene chloride;

[0032] B. Mix 30g metal powder and 8g fiber evenly in proportion, divide into 5 parts, divide 10g methylene chloride prepared in advance into 5 parts, add metal powder and fiber mixed powder and methylene chloride to step A to obtain in turn Dissolve in polylactic acid in dichloromethane, stir well after each addition of powder and dichloromethane, then remove and seal.

[0033...

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Abstract

The invention relates to a slurry of fiber-reinforced metal matrix composite material for extrusion 3D printing and a preparation method thereof. 4-15wt.%, metal powder 45-55wt.%, binder 2-4wt.%, dispersant 30-40wt.%, wherein the binder is polylactic acid, and the dispersant is dichloromethane. The invention is a method for extruding without heating, maintaining the arrangement of fibers in the metal matrix, and improving the performance of fiber-reinforced metal matrix composite materials; after the binder is removed, about 80% of the fibers with a length of 150-300 μm show Good orientation effect, the angle between the arrangement direction and the printing direction is kept within 10°, which maintains the precise orientation arrangement of carbon fibers in the metal matrix, which will greatly improve the mechanical properties of the composite material.

Description

technical field [0001] The invention belongs to the technical field of fiber-reinforced metal matrix composite materials, and in particular relates to a slurry of fiber-reinforced metal matrix composite materials for extrusion 3D printing and a preparation method thereof. Background technique [0002] 3D printing technology, also known as additive manufacturing, has been widely used in the field of complex or difficult-to-machine, small-batch parts forming. The commonly used heat source is laser or electron beam, which not only increases the manufacturing cost, but also greatly restricts the types of materials. [0003] At present, the preparation methods of fiber-reinforced metal matrix composites are divided into solid-state methods and liquid-state methods. Among them, liquid-phase methods mainly include liquid infiltration method, squeeze casting method, stirring casting method and spray deposition method. The solid-state method is mainly a powder metallurgy method. Com...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/10B22F3/22B33Y70/10
CPCB22F3/227B33Y70/10B22F1/10Y02P10/25
Inventor 刘燕田壮壮李淑一刘庆萍韩志武任露泉
Owner JILIN UNIV
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