Preparation method of graphene oxide homodisperse reinforced alumina composite material

• Main Authors: JI GENSHUN, GUO TIEMING, GAO CHANGQI, JIA JIANGANG, LIU DIQIANG
• Format: Patent
• Language: Chinese; English
• Published: 08.09.2017
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; COMPOUNDS THEREOF; CONCRETE; INORGANIC CHEMISTRY; LIME, MAGNESIA; METALLURGY; NON-METALLIC ELEMENTS; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

The invention discloses a preparation method of a graphene oxide (GO) homodisperse reinforced alumina composite material. The method includes the steps of: preparing a graphene oxide hydrosol; preparing a TiO2-CuO sintering additive; preparing an AlOOH sol; adding the AlOOH sol into the TiO2-CuO sintering additive according to certain weight percentage, then dispersing the graphene oxide hydrosol in the AlOOH sol according to a GO/alpha-Al2O3 weight ratio of 0.2%-0.6%, and conducting heating till water evaporation to obtain gel, and carrying out molding, drying, calcination and hot pressing sintering, thus obtaining the graphene oxide homodisperse reinforced alumina composite material. The method provided by the invention realizes homodisperse of graphene oxide in an alpha-Al2O3 matrix, and achieves an excellent strengthening and toughening effect. 本发明公开种氧化石墨烯均匀分散增强氧化铝复合材料的制备方法，包括如下步骤：制备氧化石墨烯水溶胶；制备TiO-CuO烧结助剂；制备AlOOH溶胶；将AlOOH溶胶按定的重量百分比加入TiO-CuO烧结助剂，然后按GO/α-AlO的重量比0.2％-0.6％的比例将氧化石墨烯水溶胶分散在AlOOH溶胶中，加热至水分蒸发，得凝胶，经