3 results about "Barium tetraborate" patented technology

The invention belongs to the technical field of special ceramic preparation, and particularly relates to high-strength special ceramic and a preparation method thereof. The high-strength special ceramic is prepared from the following raw materials: alumina powder, quartz powder, serpentine, phosphorus slag, eucryptite, barium borate, nano yttrium trifluoride, nano hafnium boride, nano strontium zirconate, nano lanthanum titanate and polyborosilazane. According to the high-strength special ceramic disclosed by the invention, the aluminum oxide powder, the quartz powder, the serpentine and the phosphorus slag are taken as matrix raw materials, eucryptite, barium borate and yttrium trifluoride are taken as fluxing agents, and nano hafnium boride, nano strontium zirconate, nano lanthanum titanate and polyborosilazane are taken as fillers, so that the prepared special ceramic has excellent bending strength and fracture toughness.

The application belongs to the field of composite materials, and provides a preparation method of a composite material of barium borate as a skeleton loaded with glycerol monostearate, GMS is dispersed in deionized water, heated and stirred, and then cooled to room temperature to form a suspension, barium nitrate and sodium tetraborate are dispersed in deionized water and stirred by a magnetic stirrer; the GMS suspension is added dropwise into the sodium tetraborate solution and stirred uniformly, the barium nitrate solution and the PEG-200 solution are added dropwise into the GMS and sodium tetraborate mixed solution in sequence and stirred uniformly, and then poured into a hydrothermal kettle for hydrothermal treatment; after hydrothermal treatment, the product is naturally cooled to room temperature, centrifuged or suction filtered, and the precipitate is washed with deionized water to obtain a BaB / GMS / PEG composite material. The product has excellent tribological properties. The preparation method of the composite material of barium borate as a skeleton loaded with glycerol monostearate has the advantages of simple synthesis process and green and environmentally-friendly reaction.

The invention discloses a preparation method of an advanced screen display ZnO-Al2O3-SiO2-based glass substrate, and belongs to the technical field of novel preparation processes of screen display glass materials. According to the technical scheme, the method is characterized in that ZnSiO3 and Al2 (SiO3) 3 are selected as glass melting raw materials, one or more of calcium borate or barium borate is selected as a cosolvent, the raw materials can be completely melted and reacted at 1260 DEG C, and the temperature of the raw materials is far lower than that of conventional oxide preparation; the clarifying agent is selected from one or more of cerium dioxide, barium sulfate, calcium sulfate or zirconium oxide, and the auxiliary materials not only serve as the clarifying agent, but also play a role of a nucleating agent in the glass crystallization process, so that sufficient use and compatible chemical effects of additives are formed, and excessive introduction of impurities is avoided. The clear glass clarification time and temperature treatment process are beneficial to regulation and control of crystallization degree and hardness, and the stability of the substrate in the process of preparing the TFT-LCD on the substrate glass in the later period is guaranteed.