Composite material based on reverse-mode foam material as well as preparation method and application of composite material
A technology of foam materials and composite materials, applied in the field of composite materials based on anti-molding foam materials and its preparation, can solve the problems of low preparation efficiency, single preparation method, single material structure or composition, etc., achieve wide variety and improve preparation efficiency , the effect of good application prospects
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preparation example Construction
[0048] The preparation method of described anti-molding foam material, this preparation method comprises the steps:
[0049] (1) The preparation process of sacrificial template foam material: first, adopt the macromolecular resin foam material with three-dimensional interconnected open-pore structure as initial template material, described polymer resin foam material is epoxy resin, phenolic resin, furfural resin, polyurethane One or two or more of polyester, polyether; secondly, the network skeleton reinforcement of the polymer resin foam material is thickened until the thickness of the skeleton reinforcement reaches the cross-section of the three-dimensionally connected channel hole (b) The size required for the surface diameter is 0.1mm to 10mm, and thus the sacrificial template foam material is prepared;
[0050] (2) Anti-molding foam material preform preparation process: This process is selected from the following one or a combination of two or more:
[0051] (i) groutin...
Embodiment 1
[0076] In this example, the preparation process of the aluminum-based composite material based on the anti-molding foamed silicon carbide material is as follows:
[0077](1) Selection of counter-foamed silicon carbide material reinforcement: choose a counter-moulded silicon carbide material with a size of 30×30×30mm, the total porosity is 30%, and the supporting skeleton is a dense structure; any two adjacent three-dimensional The distance between the central positions of the section of the communicating channel hole (b) is 7 mm, and the diameter of the section of the channel hole is 1 mm.
[0078] In this example, the preparation process of the anti-molded silicon carbide foam material with a dense structural support skeleton is as follows:
[0079] (I) Anti-molding foam material support frame (a) Preparation of green body raw materials: alumina powder (average particle size 3.5 μm), magnesium oxide powder (average particle size 3 μm), polyvinyl butyral, and ethanol according...
Embodiment 2
[0090] In this embodiment, the preparation process of the copper-based composite material based on the reverse-molded silicon carbide foam material is as follows:
[0091] The difference from Example 1 is that in step (3), pure copper is used instead of pure aluminum, the copper is melted at 1200 ° C, the copper liquid is quickly poured into the mold and a pressure of 20 MPa is applied, and after holding the pressure for 30 seconds, the sample is removed from the mold , after cooling to room temperature, the excess copper layer was removed by machining to obtain a copper-based composite material based on the reverse-molded silicon carbide material.
[0092] Macroscopically, the structure of the composite material is constructed by a three-dimensional continuous anti-foam silicon carbide reinforcement and a copper matrix in three-dimensional connected channel holes. Among them, the chemical composition of the supporting skeleton of the anti-molding foam material reinforcement m...
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