A kind of imitation shell lightweight high-strength composite material and preparation method thereof

A high-strength composite material and shell-like technology, which is applied in the field of composite material preparation, can solve the problems of limiting bending strength and mechanical properties

Active Publication Date: 2021-09-14
BEIHANG UNIV
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  • Abstract
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Problems solved by technology

The reason is that graphene oxide nanosheets have super flexibility, which limits the improvement of the mechanical properties of the final GO-based 3D bulk material, especially the improvement of its bending strength, fracture toughness and rigidity.

Method used

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  • A kind of imitation shell lightweight high-strength composite material and preparation method thereof
  • A kind of imitation shell lightweight high-strength composite material and preparation method thereof
  • A kind of imitation shell lightweight high-strength composite material and preparation method thereof

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Embodiment Construction

[0052] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0053] It should be noted that since the graphene oxide material is prepared according to the modified Hummer method reported in the literature, its preparation process will not be repeated in the following specific examples.

[0054] (1) Accurately weigh 500 mg of pre-prepared graphene oxide powder, dissolve it in 500 mL of deionized water and stir for 2 hours, and then undergo ultrasonic dispersion for 1 min to obtain a uniformly dispersed 1 mg / mL colloidal graphene oxide (GO) solution;

[0055] Accurately weigh 1.5g of sodium alg...

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Abstract

The invention belongs to the technical field of composite material preparation, and relates to a method for preparing a shell-like light-weight high-strength composite material. The specific method is (1) using leaf-shaped amorphous-crystalline heterogeneous manganese dioxide nanosheets prepared by a redox method and Hummers Graphene oxide obtained by the oxidation method is used as the main building unit, combined with a small amount of biological macromolecules, and a high-strength composite film material is prepared by evaporation-induced self-assembly method; (2) A large number of composite film materials are brushed with a cross-linking agent layer by layer Assembled into one body, combined with hot pressing process to obtain light weight and high strength block layered micro-nano composite material. The preparation process of the invention is simple and convenient to operate, and the process is green and environment-friendly, and the strength of the finally prepared bulk composite material is far superior to most other graphene oxide-based bulk composite materials.

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

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/12C08J7/14C08J5/18C08L89/00C08L5/04C08K7/00C08K3/22C08K3/04
CPCC08J5/18C08J7/12C08J7/14C08J2305/04C08J2389/00C08K3/22C08K7/00C08K2003/2262C08K2201/011C08K3/042
Inventor 郭林唐旭科陈科
Owner BEIHANG UNIV
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