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Preparation method for composite material of lightweight structure

A composite material and lightweight technology, which is applied in the direction of metal material coating process, coating, solid-state diffusion coating, etc., can solve the problem of not being able to effectively reduce the weight of automobiles, affecting the driving safety of automobiles, and uneven material bearing capacity and other issues, to achieve the effect of superior volume-to-mass ratio, high load-bearing strength, and reduced vehicle weight

Active Publication Date: 2017-09-08
GUANGZHOU YUEWANG AGRI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The way to reduce the weight of the car is to use a large number of light porous materials on the body, such as alloy porous materials such as aluminum and magnesium, and polyurethane sandwich panel materials. Melt foaming, and the material prepared by this method has extremely poor pore uniformity, and through-holes and closed-cells are mixed together, which cannot effectively play the role of automobile lightweight. At the same time, the unevenness of pores will also cause uneven bearing capacity Uniform; polyurethane sandwich panel material is used in the automotive field, its strength and flame retardancy are poor, which seriously affects the driving safety of the car

Method used

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  • Preparation method for composite material of lightweight structure
  • Preparation method for composite material of lightweight structure
  • Preparation method for composite material of lightweight structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) The porosity is 20% and the distribution is uniform, the thickness is 5mm, and the mass density is 850g / m 2 The porous foam iron plate was soaked in dilute hydrochloric acid solution with a solute mass fraction of 5% for 5 minutes to remove the oxide film on the surface of the material, then cleaned with tap water and dried at low temperature;

[0021] (2) Mix aluminum hydroxide powder, titanium dioxide powder, silicon carbide powder (all particle sizes are 0.05mm) and water by weight percentage 70%: 10%: 10%: 10%, and mix them at 2.0*10 -2 Under the vacuum degree of Pa and the heat infiltration temperature of 800°C, vacuum heat infiltration is carried out on the porous iron foam plate treated in step (1) until the alloy powder penetrates into 2 / 5 of the thickness of the porous base material, and then the loaded porous iron plate is The foamed iron plate was placed in a heat treatment furnace at 500°C and protected by a nitrogen atmosphere for 5 hours, and the SEM i...

Embodiment 2

[0027] (1) The porosity is 50% and the distribution is uniform, the thickness is 15mm, and the mass density is 1000g / m 2 The porous foam iron plate was immersed in a dilute hydrochloric acid solution with a solute mass fraction of 8% for 8 minutes to remove the oxide film on the surface of the material, then cleaned with tap water and dried at low temperature;

[0028] (2) Mix aluminum hydroxide powder, titanium dioxide powder, silicon carbide powder (the particle size is 0.2mm) and water by weight percentage 75%: 5%: 10%: 10%, and mix them in 2.5*10 -2 Under the vacuum degree of Pa and the heat infiltration temperature of 900°C, vacuum heat infiltration is carried out on the porous iron foam plate treated in step (1) until the alloy powder penetrates into 1 / 5 of the thickness of the porous base material, and then the loaded porous iron plate is The foamed iron plate is kept in a heat treatment furnace at 700 ° C and protected by a nitrogen atmosphere for 6 hours;

[0029] (3...

Embodiment 3

[0034] (1) The porosity is 75% and the distribution is uniform, the thickness is 30mm, and the mass density is 2500g / m 2 The porous foam iron plate was immersed in a dilute hydrochloric acid solution with a solute mass fraction of 8% for 9 minutes to remove the oxide film on the surface of the material, then cleaned with tap water and dried at low temperature;

[0035] (2) Mix aluminum hydroxide powder, titanium dioxide powder, silicon carbide powder (all particle sizes are 0.8mm) and water by weight percentage 80%: 10%: 5%: 5%, and mix them in 2.5*10 -2 Under the vacuum degree of Pa and the heat infiltration temperature of 1000°C, vacuum heat infiltration is carried out on the porous iron foam plate treated in step (1) until the alloy powder penetrates into 1 / 5 of the thickness of the porous base material, and then the loaded porous iron plate is The foamed iron plate is kept in a heat treatment furnace at 800°C and protected by a nitrogen atmosphere for 7 hours;

[0036] (3...

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Abstract

The invention belongs to the field of composite metal materials, and particularly relates to a preparation method for a composite material of a lightweight structure. The preparation method comprises the steps that under the condition of vacuum heat treatment, Al-Ti-Sic alloy powder is loaded on the surface layer of a porous matrix material by adopting a thermal permeation technology, the surface of the alloy powder is coated with polyurethane resin, and then the alloy powder is dried. A high-strength alloy coating is loaded on the surface layer of the matrix material, the compactness and strength of the internal hole connection structure of the matrix material are kept, the tensile strength and the extensibility of the material are effectively enhanced, and the impact resistance is improved. An automobile fender and the related structural members made of the material are high in impact resistance and energy absorption performance, and more superior in size-mass ratio.

Description

technical field [0001] The invention belongs to the field of composite metal materials, and in particular relates to a preparation method of lightweight structural composite materials. Background technique [0002] As the concept of "energy saving and environmental protection" has attracted more and more attention from the society, lightweight has also been gradually applied to the field of ordinary cars, which can have excellent fuel-saving performance while improving handling. The way to reduce the weight of the car is to use a large number of lightweight porous materials on the body, such as alloy porous materials such as aluminum and magnesium, and polyurethane sandwich panel materials. However, the material prepared by this method has extremely poor pore uniformity, and through-holes and closed-cells are mixed with each other, which cannot effectively play the role of automobile lightweight. Uniformity; Polyurethane sandwich panel materials are used in the automotive f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C12/02
CPCC23C12/02
Inventor 黄小兵刘亮亮申有名张向阳郭雨芳
Owner GUANGZHOU YUEWANG AGRI CO LTD
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