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顯示從 11月, 2021 起發佈的文章

The efficacy and role of sodium myristate in skin care cosmetics

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  Many consumers see the chemical substance "sodium myristate" in some cosmetics, but don't know the efficacy and function of this substance, and want to know if the product containing sodium myristate is good. This article introduces the effects, effects and effects of sodium myristate on the skin. Sodium myristate , the English name is SODIUM MYRISTATE, alias: sodium myristate. The main functions of sodium myristate in cosmetics and skin care products are cleansers, emulsifiers, and surfactants. The risk factor is 2, which is relatively safe and can be used with confidence. Generally, it has no effect on pregnant women. Sodium myristate is not acne-causing. Sodium myristate has good emulsifying properties and can be dissolved in water or ethanol. It is often prepared by saponification with sodium laurate. It is also used together when used. It is the main component of soap and has a good cleaning effect. Overview of Sodium Myristate Sodium myristate  is a chemical subst

What kind of material is Nitinol?

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  Overview of Nitinol Nitinol  is a special alloy that can automatically recover its plastic deformation under a certain temperature. The expansion rate is greater than 20%, the fatigue life is 1×10-7 power, the damping characteristic is 10 times that of ordinary springs, and the corrosion resistance is better than the best medical stainless steel at present. Therefore, it can meet the needs of various engineering and medical applications and is a very excellent functional material. Application of Nitinol Powder Nitinol powder  can meet the needs of various engineering and medical applications and is an excellent functional material. In addition to its unique shape memory function, memory alloy also has excellent functions such as wear resistance, corrosion resistance, high damping and super elasticity. 1. It is not easy to deform. Nickel-titanium alloy material undergoes reverse phase transformation, continuously heating and cooling, and the material will automatically return to its o

Two preparation methods of nano silicon oxide SiO2 as anode material of lithium battery

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  The preparation methods of  nano-SiO2   are divided into two types: physical method and chemical method: (1) Physical Law The physical method generally refers to the mechanical crushing method. Use a super jet mill or a high-energy ball mill to pulverize the SiO2 aggregates to obtain ultra-fine products with a particle size of 1 to 5 microns. The process is simple but easy to introduce impurities. The characteristics of the powder are difficult to control, the preparation efficiency is low, and the particle size distribution is wide. (2) Chemical method The chemical method can produce pure ultrafine SiO2 particles with uniform particle size distribution. Chemical methods include chemical vapor deposition (CVD) method, liquid phase method, ion exchange method, precipitation method and sol-gel (Sol-Gel) method, etc. The main production method is gas phase method using silicon tetrachloride as raw material. The precipitation method using sodium silicate and inorganic acid as raw materia

Zinc stearate is a "zinc soap" widely used in industry

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  Overview of Zinc Stearate Zinc stearate  is an organic substance with a chemical formula of C36H70O4Zn. It is a white powder and is insoluble in water. Mainly used as lubricant and release agent for styrene resin, phenolic resin and amino resin. At the same time, it also has the function of vulcanization activator and softener in rubber. Zinc stearate is a "zinc soap" widely used in industry. In this case, the soap in its formal meaning, the metal salt uses a fatty acid: in this case stearic acid. It is a white solid that repels water. It is insoluble in polar solvents such as alcohol and ether, and soluble in aromatic hydrocarbons (such as benzene) and chlorinated hydrocarbons when heated. It is the strongest release agent among all metal soaps. It contains no electrolytes and has a hydrophobic effect. Its main application area is in the plastics and rubber industries. It is used as a release agent and lubricant and can be easily added. Zinc carboxylates, such as alkaline

Manganese diboride is an additive with anti-oxidation, anti-corrosion, and improving boron-containing thermal strength

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  Overview of manganese diboride powder Manganese diboride  is stable to non-oxidizing acids, but decomposes in strong oxidants and strong bases. The chemical formula of manganese diboride is MnB2 and the molecular weight is 76.56. Manganese diboride is a gray-black powder with strong magnetism. The relative density of manganese diboride is 6.9, which can be dissolved in acid to generate hydrogen. Magnesium diboride is an inorganic compound with the molecular formula MgB2. It is a dark gray, water-insoluble solid. This compound has attracted attention because it becomes superconducting at 39 K (-234 °C). In terms of its composition, MgB 2 is significantly different from most low-temperature superconductors, which are mainly characterized by transition metals. The superconducting mechanism is mainly described by the BCS theory. The superconducting properties of magnesium diboride were discovered in 2001. Its critical temperature (Tc) is 39 K (-234 °C; -389 °F), which is the highest amon

Graphene is expected to become a new generation of devices in many applications

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  The research and application development of graphene continues to heat up, and materials related to graphite and graphene are widely used in battery electrode materials, semiconductor devices, transparent displays, sensors, capacitors, transistors, and so on. In view of the excellent properties of graphene materials and their potential application value, a series of important progress has been made in many disciplines such as chemistry, materials, physics, biology, environment, and energy. Researchers are committed to trying different methods in different fields to prepare high-quality, large-area graphene materials. And by continuously optimizing and improving the graphene preparation process, reducing the cost of graphene preparation so that its excellent material properties can be used more widely, and gradually moving toward industrialization. China also has unique advantages in graphene research. From a production perspective, graphite, which is a raw material for graphene produ

Adding aluminum nitride powder to resin or plastic can significantly improve thermal conductivity

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Aluminum nitride   has high thermal conductivity and electrical insulation. Adding aluminum nitride powder to resin or plastic can significantly improve thermal conductivity. Because of its excellent thermal, electrical and mechanical properties. Aluminum nitride ceramics have attracted widespread attention from researchers at home and abroad. With the rapid development of modern science and technology, higher requirements have been placed on the properties of the materials used. Aluminum nitride ceramics will also be more widely used in many fields! Despite the unremitting efforts of many researchers over the years, great progress has been made in the research of powder preparation, forming, and sintering. However, as of April 2013, the commercialization of aluminum nitride is not high, which is also a key factor affecting the further development of aluminum nitride ceramics. In order to promote the further development of aluminum nitride research and application, the following two re