Using rare earth carbonate as raw material, the white polishing powder is prepared by fluorination roasting, which can be used in the processing of glass crafts. Grinding and polishing is to process the surface of the workpiece to make the thickness, flatness, edge radian and roughness of the workpiece meet the requirements of subsequent use. Glass, silicon wafer, all kinds of crystals, ceramics, metals and other materials can be polished. Grinding and polishing materials are an important part. Common polishing materials include diamond powder, alumina, rare earth polishing materials, silicon oxide polishing materials, etc.
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Alumina materials suitable for catalysts for waste gas purification are provided, including aluminum glue, activated alumina, rare earth zirconium composite oxide and rare earth hydrogen storage materials. The advantages are: (1) the active alumina is modified by rare earth elements, which can obviously increase the high temperature stability of alumina and has good aging resistance. 2) Rare earth zirconium composite oxide supported on γ- Al2O3 can promote the dispersion of rare earth zirconium in the carrier, maintain the stable specific surface area after high temperature, and improve the activity and service life of the catalytic material（ 3) Rare earth hydrogen storage materials have the characteristics of low impurity content, high hydrogen content, good performance and good heat resistance.
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Separator is a kind of functional membrane material with microporous structure, and its thickness is generally 8 ~ 40 μ m. In the battery system, it plays the role of separating the positive and negative electrodes, blocking the passage of electrons in the circuit during charge and discharge, and allowing the free passage of lithium ions in the electrolyte. It can selectively close the micropores when the battery is charged and discharged or the temperature rises, so as to limit excessive current and prevent short circuit. Its performance directly determines the overall performance of the battery.
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In the manufacturing industry, rare earth metals are a relatively special category. On the surface, they belong to low-end labor-intensive manufacturing industry, but in fact, they have great potential to turn to technology intensive industry. 5g commercial landing, the rise of new energy vehicles. As chips, new energy batteries, laser light sources and rare earth metals play an important role. The development of science and technology is inseparable from semiconductors. Tiny chips carry the future of the world.
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The aging of high temperature resistant silica gel is the main problem in the use of high temperature vulcanized silicone rubber. A reliable aging characteristic evaluation system of silicone rubber is very important. High temperature resistant silica gel has the advantages of high thermal stability, low heat release rate, non toxicity and aging resistance. Its molecular main chain is Si-O structure. Compared with other rubbers with carbon chain, silicone rubber has higher limiting oxygen index.
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The biggest problem of the existing ultraviolet shielding agent is its harmfulness to human body and skin. In particular, the anti ultraviolet material used in the existing UV care products is mainly titanium dioxide, which has a very high photocatalytic effect and will produce a large number of reactive oxygen species, which is called the main cause of adhesion surface aging. This problem is considered to be the biggest subject of this sunscreen. Water soluble ceria coated with silica can inhibit the production of reactive oxygen species and effectively prevent photoaging.
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Rare earth elements have rich electronic energy levels and long-lived excited states, and there are a large number of energy level transition channels, so they show good optical properties. Rare earth fluorescent materials are a new generation of luminescent materials made of rare earth elements as activators or matrix components. Rare earth ores are refined to obtain products such as rare earth oxides and metals, and then refined to obtain rare earth fluorescent materials.
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The research and development of new generation microwave dielectric ceramic materials will mainly focus on the following two directions: first, the pursuit of ultra-low loss limit; The second is to explore new material systems with higher relative permittivity. The former is to meet the needs of high reliability and higher frequency applications, while the latter is mainly to meet the miniaturization requirements of the next generation communication technology.
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With the mission of "creating a new life with new materials", we are committed to applying the latest achievements of scientific and technological progress to functional powder products, and providing rapid new product development and stable and high-quality product supply services for customers such as electronic information, new energy, environmental protection, national defense and military industry.
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