Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Foam metal with hierarchical pore structure, preparation method of foam metal and sound absorption and noise reduction material

A metal foam and multi-level porous technology, applied in the field of metal foam, can solve the problems of high preparation cost, high porosity, environmental impact, etc., and achieve the effect of good industrial application prospect and high porosity

Active Publication Date: 2020-08-11
ANHUI NEOFOUND TECH
View PDF7 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The metal deposition method is characterized by high porosity, uniform pore distribution, and interconnected pores in a three-dimensional network structure, but the preparation cost is high and has a certain impact on the environment.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Foam metal with hierarchical pore structure, preparation method of foam metal and sound absorption and noise reduction material
  • Foam metal with hierarchical pore structure, preparation method of foam metal and sound absorption and noise reduction material

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0048] Such as figure 1 Shown, the invention provides a kind of preparation method of the metal foam with hierarchical porous structure, described method comprises:

[0049] S101. Sieve the spherical pore-forming agent with a screen to obtain pore-forming agent particles in a certain particle size distribution range;

[0050] S102. Put the pore-forming agent particles into the disc granulator, add metal powder, and add the polyvinyl alcohol aqueous solution to the pore-forming agent particles and the metal powder during the rotation of the disc granulator. Powder mixture surface spray treatment;

[0051] S103. Put the pore-forming agent particles with metal powder adhered on the surface into a metal mold, and use the compaction process to make a preform, then carry out vacuum pre-sintering at 250-300°C, undergo desolvation treatment, and finally place the metal powder on the Vacuum sintering treatment is carried out in the temperature range of 70%-95% of the melting point to...

Embodiment 1

[0063] A method for preparing a metal foam with a hierarchical porous structure, the method comprising:

[0064] S101. Sieve the spherical sodium chloride granules with screens with 3mm holes and 2mm holes respectively, and collect the sodium chloride granules with an intermediate particle size, i.e. 2-3mm;

[0065] S102, put the sodium chloride granules obtained in step S101 into a PQ(T)-500 disc granulator, set the inclination angle of the disc granulator to be 45°, the rotating speed to be 40r / min, and add a particle size of 0.1-0.2mm metal aluminum powder, during the rotation process, use 5wt.% polyvinyl alcohol aqueous solution to spray on the surface of the mixture of sodium chloride particles and metal aluminum powder, so that the metal aluminum powder can fully adhere to the surface of the sodium chloride particles On the surface, preformed particles with a certain amount of metal aluminum powder adhered to the pellets were obtained after 30 minutes;

[0066] S103, pu...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
particle diameteraaaaaaaaaa
angleaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of foam metal, and particularly relates to foam metal with a hierarchical pore structure, a preparation method of the foam metal and a sound absorption andnoise reduction material containing the foam metal. The method comprises the steps that a spherical pore forming agent is screened through a screen, and pore forming agent particles are obtained; thepore forming agent particles are placed in a disc granulator, metal powder is added, and a polyvinyl alcohol water solution is sprayed to the surface of a mixture of the pore forming agent particlesand the metal powder; and the pore forming agent particles with the metal powder adhering to the surfaces are placed in a metal mold, a prefabricated product is manufactured through a blank pressing process, then vacuum pre-sintering is conducted, desolventizing treatment is conducted, finally vacuum sintering treatment is conducted, and the foam metal material with the hierarchical pore structureis obtained. According to the foam metal with the hierarchical pore structure, the preparation method of the foam metal and the sound absorption and noise reduction material containing the foam metal, on the basis of inheriting the related process thought of a traditional powder metallurgy method, a spherical pore forming agent aggregation technology is creatively introduced, core-shell structureprefabricated particles evenly coated with the metal powder are obtained, and a foundation is laid for subsequent construction of the hierarchical pore structure.

Description

technical field [0001] The invention belongs to the technical field of metal foam, and in particular relates to a metal foam with a multi-level porous structure, a preparation method thereof, and a sound-absorbing and noise-reducing material containing the metal foam. Background technique [0002] Metal foam is a material with many pores distributed in the metal matrix (such as Fe, Ni, Cu, Ti, Al, Mg, Zn, etc. and their alloys). Compared with the corresponding solid metal, it has a small density and a specific surface area. It is a new type of material with integrated structure and function. As a structural material, it has the characteristics of light weight and high strength; as a functional material, it also has the characteristics of sound absorption, heat insulation, shock resistance, impact resistance, high damping, electromagnetic shielding, etc. It has broad application prospects in the fields of devices, filters, mufflers, and porous metal electrodes. [0003] In ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/11C22C1/08B22F1/02B22F3/10G10K11/162G10K11/165G10K11/172
CPCB22F3/1121B22F3/1134B22F3/1007G10K11/162G10K11/165G10K11/172B22F1/17
Inventor 王幸福赵莫迪韩福生聂刚
Owner ANHUI NEOFOUND TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com