Graphene/silicon carbide nano-composite structure monolithic ceramic and preparation method thereof

A nano-composite, silicon carbide technology, applied in the field of ceramic material preparation, can solve the problems of difficulty in forming silicon carbide monolithic ceramics, cracks in monolithic ceramics and bulk ceramics, affecting product density, etc. The effect of forming and promoting industrial production
CN108129151AActive Publication Date: 2018-06-08中科德胜(常州)电子科技有限公司
11 Cites 9 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
中科德胜(常州)电子科技有限公司
Publication Date
2018-06-08

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides graphene / silicon carbide nano-composite structure monolithic ceramic and a preparation method thereof, and relates to preparation of a ceramic material. The preparation method comprises the following steps: 1) synthesizing a precursor PCS(GOx); and 2) preparing the graphene / silicon carbide nano-composite structure monolithic ceramic SiC(rGOx). Precursor PCS(GOx) powder is prepared from raw materials comprising GO, VTES and PCS through a chemical modification method, and then the compact graphene / silicon carbide nano-composite structure monolithic ceramic SiC(rGOx) is obtained through the steps of compression molding forming and high-temperature pyrolysis. The VTES has a -Si-O-bond and a -CH=CH2 group, so the GO and the PCS can be compounded to generate a new GO-VTES-PCS macromolecular structure. The GO is compounded to the silicon carbide ceramic, so that the crosslinking area of the precursor can be enlarged obviously, formation of the SiC nano-crystal is inhibited, the sintering temperature is reduced, and the problems that the silicon carbide monolithic ceramic prepared by a precursor method is difficult to form and low in compactness are solved.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the preparation of ceramic materials, in particular to a graphene / silicon carbide nanocomposite monolithic ceramic and a preparation method thereof. Background technique

[0002] Silicon carbide ceramics not only have the advantages of corrosion resistance, wear resistance, high hardness, good chemical stability, and low thermal expansion coefficient at room temperature, but also exhibit excellent mechanical properties at high temperatures, and are widely used in electronics, machinery, nuclear energy, etc. At present, it can be prepared by reaction sintering, hot pressing sintering and atmospheric pressure sintering. Patent ZL 200910020810.2 discloses a method for preparing silicon carbide-based reinforced composite ceramics. After molding and siliconizing and sintering at 1450-1550°C, a ceramic material with good strength and toughness is obtained. Patent ZL 200910098377.4 discloses a method for preparing carbonized ceramics...

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