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Vacuum foamed material preparation method

A foam material and vacuum technology, which is applied in the field of vacuum foam material preparation, can solve the problems of cumbersome procedures, inability to realize wall thickness and vacuum hole control, and inability to realize precise control of foam wall thickness and size of foam hole vacuum state, etc., to achieve processing Convenient, non-deformable effect

Inactive Publication Date: 2014-12-03
CHONGQING ACADEMY OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

None of the above methods can achieve precise control of the pores and wall thickness of the foam material, and the vacuum state of the foam pores
Although the investment casting method and the monomer method can basically control the pore size, they still cannot achieve the control of the wall thickness and the vacuum hole, and the procedures are more cumbersome.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1. Preparation of support body: select copper (melting point 1083° C.) to prepare spherical support body 1 (such as figure 1 shown), the outer surface of the spherical support body 1 is provided with flying spurs 1a, and the spherical support body 1 is vacuumed;

[0018] 2. If figure 2 As shown, the spherical support body 1 is poured into the mold 3, shaken and shaken, so that the spherical support body 1 is freely stacked in the mold 3, and the inner space of the mold 3 is filled, and the mold opening is blocked with a screen 5;

[0019] 3. Cast the aluminum foam material base material into the mold 3 to obtain the foam material base material 2. The casting temperature is 650-700° C., open the mold, perform heat treatment, and grind and polish, and finally obtain the vacuum foam material.

Embodiment 2

[0021] 1. Preparation of the support body: select steel (melting point above 1500°C) to prepare a capsule-shaped support body, the outer surface of the capsule-shaped support body is provided with flying spines, and vacuumize the capsule-shaped support body;

[0022] 2. Pour the capsule-shaped support into the mold, shake and shake well, so that the capsule-shaped support can be stacked freely in the mold, filling the inner space of the mold, and blocking the mold opening with a screen;

[0023] 3. Cast the foam material matrix material aluminum into the mold 3 to obtain the foam material matrix. The casting temperature is 650-700° C., open the mold, perform heat treatment, and grind and polish, and finally obtain the vacuum foam material.

Embodiment 3

[0025] 1. Preparation of the support body: select aluminum (melting point 660°C) or magnesium (melting point 649°C) to prepare a regular tetrahedral support body, the outer surface of the regular tetrahedron support body is provided with flying spurs, and the regular tetrahedron support body is drawn into vacuum;

[0026] 2. Pour the tetrahedral support into the mold, oscillate and shake evenly, so that the tetrahedral support can be stacked freely in the mold, filling the inner space of the mold, and blocking the mold opening with a screen;

[0027] 3. Cast the bisphenol A type epoxy resin as the foam material base material into the mold 3 to obtain the foam material base material. The casting temperature is 58-93° C., open the mold, perform heat treatment, and polish to obtain the vacuum foam material.

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Abstract

The invention discloses a vacuum foamed material preparation method, which comprises the following steps: A) selecting a material with melting point higher than the casting temperature of a foamed material matrix to prepare a hollow support body, wherein the burr is distributed at the external surface of the support body, performing vacuum-pumping in the support body; B) dumping the support body in a die, uniformly shaking for freely stacking the support body in the die, after the internal space of the die is full of the support bodies, using a screen mesh to block a die opening; C) casting the foamed material matrix in the die, and opening the die to obtain the vacuum foamed material. The vacuum foamed material preparation method can accurately control the hole size, shape and wall thickness of the foamed material. The foamed material has the advantages of difficult deformation and convenient processing.

Description

technical field [0001] The invention relates to a preparation method of a vacuum foam material. Background technique [0002] Foam is a porous material with advantages such as low density, energy absorption, sound absorption, structural damping performance, and high specific stiffness. Foam materials can be roughly divided into three categories: metal foam materials, foam glass and polymer foam materials. So far, the preparation methods of foam materials are divided into three categories according to the state in the preparation process: solid metal sintering method, liquid metal solidification method, and deposition method. Liquid metal solidification method is divided into direct foaming method, melt blowing foaming method, melt foaming agent method, etc.; solid metal sintering method is divided into powder metallurgy method, powder slurry molding method, sintering dissolution method, Micro-sintering method; metal deposition method is divided into electrodeposition metho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C44/12C22C1/08
Inventor 姜山李耶斯豆阿吉杜维唯程仁菊蒋显全
Owner CHONGQING ACADEMY OF SCI & TECH
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