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turbine oil
Turbine oil, also known as turbine oil, usually includes steam turbine oil, gas turbine oil, hydraulic turbine oil and antioxidant turbine oil, etc. It is mainly used for turbine oil and sliding bearings , reduction gears, governors and hydraulic control systems of associated units. of lubrication. The main functions of turbine oil are lubrication, cooling and speed regulation.   Performance requirements   According to the functional characteristics of turbine oil, in order to ensure the safe and economical operation of the steam turbine unit, turbine oil must have: ① Good oxidation stability; ② Suitable viscosity and good viscosity-temperature properties; ③Good anti-emulsification; ④ Good rust and corrosion resistance; ⑤ Good anti-foaming and air release properties.   advantage   Due to the energy saving and high power characteristics of gas turbines , during operation, the lubricating oil is affected by high-heat surfaces, mixed with air (flue gas), pumped and ci...
cnauto
105
February 19, 2024
Curing Agent（p-Hydroxybenzenesulfonic acid）
P-Hydroxybenzenesulfonic acid is also called phenolsulfonic acid . Its molecular formula is C6H6O4S and its molecular weight is 174.17. This substance is mainly used for resin curing and is the most important additive in the acidic tin plating process. It also has the function of acidic resin foaming and is used in organic intermediate.     Basic Information   Commonly known as: curing agent   Chinese chemical name: p-hydroxybenzenesulfonic acid English name:phenol-4-sulfonic acid Chinese alias: phenol sulfonic acid; phenol-4-sulfonic acid; phenol-4-sulfonic acid; curing agent; 4-hydroxybenzenesulfonic acid; p-phenol sulfonic acid   English aliases: 4-hydroxybenzenesulphonic acid; phenol-p-sulphonic acid; p-Phenolsulfonic acid hydrate; Phenolsulfonic acid; 4-hydroxy-benzenesulfonicaci; 4-Hydroxyphenylsulfonic acid; , p-hydroxy-; Benzenesulfonicacid,4-hydroxy-; Phenol-4-sulfonicacidsolutio; phenol sulphonate; 4-hydroxybenzenesulfonic acid;   CAS number:98-...
cnauto
364
February 19, 2024
Gear Oil
Gear oil mainly refers to the lubricating oil of the transmission and rear axle . It is different from engine oil in terms of usage conditions, composition and performance. Gear oil mainly lubricates gears and bearings, prevents wear and rust, and helps gears dissipate heat. Automotive gear oil is used in gear transmission mechanisms such as automobile steering gears, transmissions, and drive axles. Due to the high surface pressure during gear transmission, gear oil plays a role in lubrication, anti-wear, cooling, heat dissipation, anti-corrosion, anti -rust , cleaning and reduction of gears. Surface impact and noise play an important role.   introduce   Gear oil should have good anti-wear, load-bearing properties and appropriate viscosity . In addition, it should also have good thermal oxidation stability , foam resistance , water separation performance and rust prevention performance . Since the gear load is generally above 490 MPa (MPa), and the hyperbolic tooth surface l...
cnauto
111
February 19, 2024
Hydraulic oil
Hydraulic oil is the hydraulic medium used in hydraulic systems that utilize liquid pressure energy. It plays the roles of energy transfer , anti-wear, system lubrication, anti-corrosion , anti-rust , cooling , etc. in the hydraulic system . For hydraulic oil, the liquid viscosity requirements of the hydraulic device at the operating temperature and starting temperature should first be met. Since the viscosity change of the lubricating oil is directly related to the hydraulic action, transmission efficiency and transmission accuracy, the viscosity-temperature performance of the oil is also required. and shear stability should meet the various requirements proposed by different uses. There are many types of hydraulic oils, and their classification methods are different. For a long time, it has been customary to classify them according to their uses, and some are also classified according to oil type, chemical composition or flammability. These classification methods only reflect the cla...
cnauto
237
February 19, 2024
Desiccant
Desiccant refers to a substance that can remove part of the water from humid substances. Such as calcium sulfate and calcium chloride , which are dried by combining with water to form hydrates ; physical desiccants, such as silica gel and activated alumina , are dried by physically adsorbing water. Moisture control is closely related to product yield. As far as food is concerned, under appropriate temperature and humidity, bacteria and mold in food will multiply at an alarming rate, causing food to spoil, causing moisture and discoloration. Change. Electronic products can also cause metal oxidation due to excessive humidity, causing defects. The use of desiccant is to prevent excess water from causing defective products.     application   physical adsorption   Desiccant is suitable for preventing instruments, instruments, electrical equipment, medicines, food, textiles and other various packaged items from getting damp. Desiccant is also widely used during shipping...
cnauto
114
February 19, 2024
Precipitated barium sulfate
Precipitated barium sulfate is a white precipitate generated by the reaction of barium ions and sulfate ions in solution. It is stable and almost insoluble in water, ethanol and acid, but soluble in hot sulfuric acid.   Basic Information   The appearance of precipitated barium sulfate is white amorphous powder, with a relative density of 4.50 (15°C) and a melting point of 1580°C. Due to its high refractive index (1.63~1.65), it appears whiter in color and has a certain covering power. It is almost insoluble in water, ethanol and acid, and soluble in hot sulfuric acid. It can be easily mixed with potassium permanganate , calcium carbonate or metal nitrate to form mixed crystals. It can be reduced to barium sulfide with carbon at high temperatures. It is an important basic chemical raw material. Its main uses are: used as raw material or filler for paints, coatings, inks, plastics, rubber and batteries; surface coating agent for printing paper and coated paper; sizing agent fo...
cnauto
93
February 18, 2024
light calcium
Light calcium is light calcium carbonate, also known as precipitated calcium carbonate, or light calcium for short. It can be used as filler in industries such as rubber, plastics, papermaking, coatings and inks. It is widely used in organic synthesis, metallurgy, glass and asbestos production.   Morphological characteristics The settling volume of light calcium carbonate is 2.4-2.8mL/g. The particles of ordinary light calcium are in the shape of jujube stones when fully dispersed, with a long diameter of about 5 to 12 μm, a short diameter of 1 to 3 μm, and an average powder diameter of 2 to 3 μm. However, since there is no surface treatment, after the light calcium is generated, dehydrated and dried, many particles often aggregate together to form grape-like pellets. Therefore, the quality requirements for light calcium in the national standard are only from 125 μm and 45 μm sieve residue. Judging from the material does not directly reflect the true particle size and distributio...
cnauto
101
February 18, 2024
Defoaming agent
Defoaming agents, also known as antifoaming agents, are food additives that reduce surface tension, inhibit foam generation or eliminate foam that has already been generated during food processing. Defoaming agents approved for use in my country include emulsified silicone oil, high-carbon alcohol fatty acid ester complex, polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropylene amine ether, polyoxypropylene glyceryl ether and polyoxypropylene polyoxyethylene 7 types including vinyl glyceryl ether and polydimethylsiloxane.     Encyclopedia business card   Defoamer is also called anti-foaming agent. During the industrial production process, many harmful foams will be produced, and defoamer needs to be added. It is widely used to remove harmful foam produced in the production process of latex, textile sizing, food fermentation, biomedicine, pesticides, coatings, petrochemicals, papermaking, industrial cleaning and other industries.   F...
cnauto
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February 18, 2024
heavy calcium carbonate
Heavy calcium carbonate, referred to as heavy calcium, is made from ground natural carbonate minerals such as calcite, marble, and limestone. It is a commonly used powdery inorganic filler with high chemical purity, high inertness, not easy to react chemically, good thermal stability, will not decompose below 400°C, high whiteness, low oil absorption, low refractive index, soft, dry, It does not contain crystal water, has low hardness and low wear value, is non-toxic, tasteless, odorless, and has good dispersibility.   Physical and chemical properties   The chemical formula of calcium carbonate is CaCO3. Its crystals mainly include trihedral calcite and orthorhombic aragonite . At normal temperatures and pressures, calcite is stable and aragonite is quasi-stable. Currently, calcite is the main form. Lord. Under normal pressure, when calcite is heated to 898°C and aragonite is heated to 825°C, it will decompose into calcium oxide and carbon dioxide; calcium carbonate reacts w...
cnauto
216
February 18, 2024
acrylic emulsion
Acrylic emulsion polymers are widely used in pigment printing, electrostatic flocking, fabric lamination, warp sizing and coating processing, etc. Acrylic esters with different properties also have different characteristics due to differences in the raw materials and proportions used. use. Silicone-modified acrylic emulsion is an emulsion polymer of organic silicon compounds and acrylic esters. Its emulsion particle size distribution is uniform, the emulsion stability is high, the coating film has good comprehensive properties, good waterproof performance, and the waterproof performance can reach a high level.     physical properties   Acrylic emulsion is a milky white or nearly transparent viscous liquid.   Acrylic emulsion is an emulsion copolymerized from pure acrylic ester monomers. It is a small particle size, multi-purpose, and excellent performance emulsion. It is suitable for a variety of coating formulations and has outstanding water resistance and weather...
cnauto
139
February 18, 2024
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