Shell-imitated light-weight high-strength composite material and preparation method thereof

A high-strength composite material and imitation shell technology, which is applied in the field of composite material preparation, can solve the problems of limiting bending strength and limiting mechanical properties, and achieve high bending mechanical properties, simple operation, excellent fracture toughness and impact resistance.
CN112266497AActive Publication Date: 2021-01-26BEIHANG UNIV
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
BEIHANG UNIV
Publication Date
2021-01-26

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Abstract

The invention belongs to the technical field of composite material preparation, and relates to a preparation method of a shell-like light-weight high-strength composite material, which comprises the following steps: (1) taking a leaf-shaped amorphous crystal heterogeneous manganese dioxide nanosheet prepared by an oxidation-reduction method and graphene oxide obtained by a Hummers oxidation methodas main construction units, and combining with a small amount of biomacromolecules, preparing a high-strength composite film material through an evaporation-induced self-assembly method; and (2) a large number of composite film materials are assembled into a whole through layer-by-layer brushing of a cross-linking agent, and the light high-strength block layered micro-nano composite material is obtained in combination with a hot-pressing process. The preparation process is simple and convenient to operate, the process is green and environmentally friendly, and the strength of the finally prepared block composite material is far superior to that of most other graphene oxide-based block composite materials.
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Description

technical field

[0001] The invention relates to the technical field of composite material preparation, and more specifically relates to the preparation of a three-dimensional shell-like lightweight high-strength composite material with high bending strength and toughness. Background technique

[0002] Bulk lightweight structural materials with high load-carrying capacity and three-dimensional (3D) bulk have attracted the attention of researchers due to their wide applications in fields such as engineering construction, aerospace, etc. Graphene oxide (GO), as a two-dimensional ultrathin graphite material, has been widely considered as an ideal material for assembling GO substrates due to its good water solubility, excellent mechanical properties and abundant surface functional groups. The micro-nano basic building blocks of materials. However, the preparation of GO-based bulk structural materials with large scale and high mechanical properties is still a challenge. This is ...

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
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