36results about How to "Reasonable viscosity" patented technology

The invention relates to an oil-based lubricating composite and a preparation method thereof, in particular to a water-based copper and aluminum wiredrawing oil composite and a preparation method thereof. The water-based copper and aluminum wiredrawing oil composite comprises base oil, an emulsifier, an auxiliary emulsifier, a defoaming agent, a rust-proof agent, an antiseptic and an antiwear agent. The preparation method comprises the following steps of: configuring the water-based copper and aluminum wiredrawing oil composite into 3 percent to 45 percent water-based emulsion according to weight percentage; and spraying the water-based emulsion into a wiredrawing die cavity in the copper and aluminum wiredrawing process. The water-based copper and aluminum wiredrawing oil composite has the advantages of excellent lubricating property, great optimal light stability and storage stability, low cost, good cooling effect, fast heat transfer, little temperature increase in the using process, difficult combustion and easy cleaning and ensures the safety of the service environment; and in addition, a copper wire and an aluminum wire drawn by the method have the advantages of uniform wireshape, bright surfaces, difficult corrosion, good ultraviolet and storage stability and good stability.

An abrasing liquid for abrasing the back of magnetic head for hard disc contains proportionally mineral oil containing C11-C13 alkane, oiling agent, superfine monocrystal diamond powder, antioxidizing anticorrosion agent, non-ionic surfactant, defoaming agent, and antistatic agent.

The invention discloses a method for producing a water soluble moistureproof film coating premixing agent, which relates to a pharmaceutical excipient. The premixing agent consists of raw materials, namely polyvinyl alcohol, polyethyleneglycol, hydroxypropyl methylcellulose, castor oil, tween-80, color lake, titanium pigment and talcum. The raw materials are mixed according to certain weight percentage, and the premixing agent is produced according to the prior process for producing the film coating premixing agents. The method has the advantages that the water soluble moistureproof film coating premixing agent produced according to the formula has good film-forming property, firm combination of a coating layer and a medicament core, strict wrapping, uniform thickness and even coloration, is smooth and beautiful, has good moisture resistance and oxygen insulation, can avoid surface abrasion, edge cracking, peeling or adhesion of a finished coating agent product and the like, and can better meet various needs of film coatings of solid pharmaceutical preparations.

The invention discloses a warp-knitting dacron short pile fabric and a weaving method thereof, and belongs to the technical field of warp-kitting fabric weaving. 50-75D of dacron FDY and dacron DTY composite filaments are adopted as pile yarn, 50D / 24F of polyester silk FDY or polyester silk DTY is adopted as bottom yarn, a two-comb or three-comb Tricot warp knitting machine conducts weaving to obtain gray fabric, then the procedures of pre-shaping, fuzzing process implementation, dyeing, drying, hot trimming and burnt-out are carried out, and after dehydration and drying for shaping are conducted, checking and packaging are carried out. By means of a chemical treatment method for dacron fibers, the effect of forming a three-dimensional pattern diversified in color and different in shape onthe fuzzing surface of the fabric is achieved, the gram weight of the fabric is low, and the fabric has better heat preservation performance and higher comfort degree.

The invention discloses a continuous casting method of aluminum-containing peritectic high-strength automobile steel. The method comprises the following steps that in the molten steel pouring processof the aluminum-containing peritectic high-strength automobile steel, a stopper rod, an upper nozzle and an inter-sheet device are opened in a tundish for three-way argon blowing; crystallizer covering slag is used for casting protection, and the crystallizer covering slag comprises the chemical components of, in percentage by weight, 1.2 %-1.6 % of Al2O3, 35 %-45 % of CaO, 30 %-35 % of SiO2, 8 %-12 % of F, 1.0 %-2.0 % of (Na2O + K2O), 0.8 %-1.0 % of MgO and 4 %-6 % of C; a crystallizer adopts a first preset weak cooling process and a high-frequency small-amplitude process is put into use, wherein the first preset weak cooling process is used for controlling the heat flux density of a meniscus area of the crystallizer to be 1.0-2.0 MW.m <-2>; a casting blank of the aluminum-containing peritectic high-strength automobile steel is cast by a continuous casting machine at a preset casting speed; and a continuous casting secondary cooling section adopts a second preset weak cooling process.According to the scheme, surface cracks and bonding defects of the casting blank are remarkably reduced.

Foams suitable for such uses as landfill coverage, frost protection, volatile emission control, gas control in mining, are composed of a hydrolyzable protein and a pre-gelatinized cationic modified starch along with other ingredients. The foam concentrate can be made at ambient temperature, is stable over time, can be easily tailored to achieve a desired foam stiffness and drain time characteristic over wide ranges, and can be easily diluted at ambient temperature to produce a foamable composition.

The invention belongs to the field of preparations and relates to a timolol maleate pharmaceutical composition and a preparation method thereof. The timolol maleate pharmaceutical composition contains timolol maleate, Carbopol, triethanolamine, propylene glycol, ethylparaben and water. The pharmaceutical composition has the advantages of good biocompatibility, easiness in coating, no greasiness and the like, and the use compliance of a patient is greatly improved; the timolol maleate pharmaceutical composition can directly act on a focus of infection, and the local drug concentration is increased, so that the drug effect is furthest exerted, and the untoward effect of the whole body caused due to oral medication or intravenous medication is avoided; and the pharmaceutical composition is suitable for industrial large-scale production, is used for treating hemangioma and is particularly suitable for treating superficial type infantile hemangioma.

The present invention relates to a process for the preparation of nateglinide, preferably in B-form, substantially free from the H-form, comprising three steps starting from D-phenylalanine methyl ester or a salt thereof.

The invention relates to a magnetic liquid sealing device capable of microwave heating, belonging to the field of mechanical engineering magnetic liquid sealing. A first bearing (3) which constitutes the sealing device, a first pole shoe (5) with a first rubber sealing ring, a permanent magnet (6), a second pole shoe (7) with a second rubber sealing ring and a second bearing (9) are sequentially installed on a shaft shoulder (14) of a transmission shaft, and magnetic liquids are poured in, thus a magnetic liquid sealing assembly is formed by the connection, and is installed on a step (15) of the inner hole of a metal sleeve (1); and an end cover (11) is fixed on the metal sleeve (1) through the threaded connection of a screw (13) and the metal sleeve (1). The transmission shaft (12) is made of a carbon fiber / epoxy resin composite material, a boron fiber / epoxy resin composite material or a glass fiber / epoxy resin composite material; and the problems that the increment in the moment of torsion of the transmission shaft and the safety performance reduction of the transmission shaft caused by the increment of magnetic liquid viscocity under low temperature are solved.

The invention provides modified asphalt and a preparation method thereof, and the modified asphalt comprises the following components in parts by weight: 125-150 parts of matrix asphalt, 15-50 parts of rubber powder, 5-10 parts of furfural extract oil, 5-15 parts of epoxy resin, 5-10 parts of a diluent, 3-8 parts of a curing agent and 6-12 parts of a stabilizer. Effective combination of the rubber powder, the furfural extract oil, the epoxy resin, the diluent and the curing agent is achieved, and the prepared modified asphalt is not prone to layering, has good compactness and flatness, is excellent in pavement performance, can be directly used for road paving and is suitable for industrial production.

A modified high density brine for use in subterranean drilling and completion operations. The modified high density brine includes the addition of high density particle addition that can optionally be surface-modified. The resultant modified high density brine eliminates the need for toxic, corrosive, and costly ZrBr2 additions or other ionic additives to boost the density of the modified high density brine to 15-17 lbs. / gallon or greater.

The invention discloses a method for acquiring an iron-based material corrosion product layer by layer. The method comprises the following steps: 1), the surface of the corrosion product is repeatedly coated by an acetone solution of cellulose acetate to form a coating layer with thickness of 0.5 mm-1 mm, after the coating layer is naturally solidified, the coating layer adhered with the corrosion product is removed, and then placed in a receiving flask for sealing and preservation; and 2), the step 1) is repeated, and the coating layer adhered with the corrosion product is collected, and the corrosion product is collected layer by layer. A layered acquisition method is different from a recommend acquisition method in a SY / T 0546-1996 standard, the layered collection of the corrosion product on the surface of iron-based metal is realized, corrosion morphology of the corrosion product cannot be destroyed, the structure of block or sheet-shaped corrosion products is not destroyed, and effective cleaning of the metal surface corrosion product is realized.

Foams suitable for such uses as landfill coverage, frost protection, volatile emission control, gas control in mining, are composed of a hydrolyzable protein and a pre-gelatinized cationic modified starch along with other ingredients. The foam concentrate can be made at ambient temperature, is stable over time, can be easily tailored to achieve a desired foam stiffness and drain time characteristic over wide ranges, and can be easily diluted at ambient temperature to produce a foamable composition.

The present invention relates to a high-bandwidth bending insensitive multimode optical fiber. The high-bandwidth bending insensitive multimode optical fiber comprises a core layer and claddings surrounding the core layer. The refractive index cross section of the core layer is in the shape of a parabola. The high-bandwidth bending insensitive multimode optical fiber is characterized in that the claddings include an inner cladding, a first recessed cladding, a second recessed cladding and an outer cladding which are distributed sequentially from inside to outside; the unilateral radial width (R2-R1) of the inner cladding ranges from 1 to 3 microns, and the relative refractive index difference delta 2 of the inner cladding ranges from -0.2% to 0.05%; the unilateral radial width (R3-R2) of the first recessed cladding ranges from 3 to 8 microns, and the relative refractive index difference delta 3 of the first recessed cladding ranges from -0.9% to 0.3%; the unilateral radial width (R4-R3) of the second recessed cladding ranges from 6 to 30 microns, and R4 is smaller than or equal to 58 microns, and the relative refractive index difference delta 4 of the second recessed cladding ranges from -0.15% to 0.01%; and the radius R5 of the outer cladding ranges from 60 to 65 microns, and the relative refractive index difference delta 5 of the outer cladding ranges from -0.15% to 0.15%. The optical fiber of the invention has the advantages of reasonable material composition and structural design, convenient process control, improved and reduced inner stress distribution, enhanced bending resistance and increased bandwidth.

The present invention relates to a process for the preparation of nateglinide, preferably in B-form, substantially free from the H-form, comprising three steps starting from D-phenylalanine methyl ester or a salt thereof.

The invention discloses a grinding liquid used for grinding the back surface of a magnetic head of a memory hard disk, belonging to the technical field of surface superfine grinding. The grinding liquid contains the following components: mineral oil of eleven-carbon to thirteen-carbon alkanes, oily agent, diamond single crystal superfine powder, anti-oxidant and anti-corrosion agent, non-ionic surfactant, defoamer and antistatic agent, The weight ratio of each component is: alkane mineral oil: 50-94.79%; oily agent: 5-35%; diamond superfine powder: 0.01%-5%; anti-oxidant preservative: 0.02-0.5%; non-ionic Surfactant: 0.1-5%; defoamer: 0.03-1.5%; antistatic agent: 0.05-3.0%. The use of the grinding liquid can reduce the cost, improve the work efficiency and improve the surface grinding precision, the surface has no scratches after grinding, the surface residual stress is low, and the surface roughness is 0.3-0.4 nanometers.

The present invention provides a mupirocin ointment and a preparation method thereof. The mupirocin ointment is composed of the following components in percentages by weight: 70-85% of polyethylene glycol-400, 10-28% of polyethylene glycol-4000 and 1-4% of mupirocin. Compared with the prior art, the mupirocin ointment has the following beneficial effects: (1) polyethylene glycol-4000 is used for replacing polyethylene glycol-3350, the medical-grade polyethylene glycol-4000 is easier to obtain, and cost of preparation raw materials is reduced; and (2) the mupirocin ointment is low in impurity content and has a release rate superior to that of products on the market.

A falling-film evaporator and an organic Rankine cycle power generating system using the same. The invention discloses the falling-film evaporator and the organic Rankine cycle power generating system. The falling-film evaporator comprises a tubular body, wherein the tubular body is provided with a working medium inlet and a working medium outlet, a distributor and a heat exchange tube are arranged in the tubular body, an oil return device is arranged at the bottom of the tubular body and comprises a float oil catcher which can float in an oil-rich layer in the bottom of the tubular body, the float oil catcher is connected with a caught oil delivery tube, and the caught oil delivery tube is connected to the exterior of the tubular body. According to the falling-film evaporator and the organic Rankine cycle power generating system, disclosed by the invention, the oil return device is simple in structure and reliable in oil return.

The invention provides an inkjet nano-silver conductive ink and a preparation method thereof, comprising the following components: 12-30 parts of nano-silver, 55-80 parts of deionized water, 0.02-2 parts of cosolvent, and 0.1-2 parts of wetting and dispersing agent 1.0 part, binder 0.4-3.0 part, defoamer 0.2-0.6 part, humectant 3.0-10.0 part, leveling agent 0.01-0.5 part, anti-settling agent 0.3-1.5 part, viscosity modifier 0.5-0.6 part. The preparation method of conductive ink includes two steps: preparation of nano-silver powder and preparation of nano-silver conductive ink. The conductive ink in the present invention protects the silver from being oxidized during storage by adding a certain co-dispersant, and at the same time improves the stability of the nano-silver particles in water by adjusting the pH value of the system; Inhibits the ink solvent volatilization too fast and causes the nozzle to block, has good conductivity, adhesion and printing adaptability.

The present invention relates to a high-bandwidth bending insensitive multimode optical fiber. The high-bandwidth bending insensitive multimode optical fiber comprises a core layer and claddings surrounding the core layer. The refractive index cross section of the core layer is in the shape of a parabola. The high-bandwidth bending insensitive multimode optical fiber is characterized in that the claddings include an inner cladding, a first recessed cladding, a second recessed cladding and an outer cladding which are distributed sequentially from inside to outside; the unilateral radial width (R2-R1) of the inner cladding ranges from 1 to 3 microns, and the relative refractive index difference delta 2 of the inner cladding ranges from -0.2% to 0.05%; the unilateral radial width (R3-R2) of the first recessed cladding ranges from 3 to 8 microns, and the relative refractive index difference delta 3 of the first recessed cladding ranges from -0.9% to 0.3%; the unilateral radial width (R4-R3) of the second recessed cladding ranges from 6 to 30 microns, and R4 is smaller than or equal to 58 microns, and the relative refractive index difference delta 4 of the second recessed cladding ranges from -0.15% to 0.01%; and the radius R5 of the outer cladding ranges from 60 to 65 microns, and the relative refractive index difference delta 5 of the outer cladding ranges from -0.15% to 0.15%. The optical fiber of the invention has the advantages of reasonable material composition and structural design, convenient process control, improved and reduced inner stress distribution, enhanced bending resistance and increased bandwidth.

The invention belongs to the technical field of a lead-acid storage battery, and specifically to a production process for a PE isolation plate of the lead-acid storage battery. The invention aims to solve problems existing in six aspects; a second oil injection process is adopted to ensure that a mixed material has reasonable viscosity; the conventional coating process for a hydrophilic surfactant is changed; a pressing process which includes the steps of pre-pressing, pressing for the second time and pressing for the third time is adopted for pressing reinforcing ribs; an opposite pressing method with adjustable spacings is adopted, so that the pressing distance can be adjusted according to requirements of customers without adjusting rollers, so that continuous production can be realized and the productivity can be increased; and a process of recycling a chemical reagent and a process of drying in three modes are performed. By adoption of the production process, the production process obtains prominent industrial practicability; compared with the conventional production process, the product quality and the production efficiency are greatly improved by the production process provided by the invention; and in addition, the production process is environment-friendly and can protect health of workers, so that the production process has an outstanding improvement effect.

The invention relates to the technical field of petroleum base lubricant composition and a preparation method thereof, which is copper and aluminum wire drawing oil and a preparation method thereof. The copper and aluminum wire drawing oil comprises base oil, an emulsifying agent, an auxiliary emulsifying agent, a defoaming agent, an antirusting agent, a preservative and an antiwear agent. The preparation method can be carried out by the following steps that: the copper and aluminum wire drawing oil is mixed into 3 percent to 45 percent of water-based emulsion according to the weight percentage. The water-based emulsion is showered into a wire drawing die cavity in the copper and aluminum wire drawing process. The product of the invention has good lubricating property, excellent light stability and storage stability, low cost, good cooling effect, fast heat-transfer speed, little temperature-rise amplitude, nonflammability and easy cleaning, thus guaranteeing safety of use environment. Copper wires and aluminum wires which are drawn by adopting the product have even line shapes, bright surfaces, and rustless property, and also have good ultraviolet and storage stability and good stability.

The invention relates to the technical field of refueling technology specially used in the texturing process of fiber filaments, in particular to a preparation method of an environmentally friendly biological texturizing oil agent, through special raw material ratio, natural oil refining, emulsifier preparation, Synthesizing the oil agent to obtain an oil agent that is not easy to yellow, has low volatility, high smoke point, safety and environmental protection, is easy to degrade, has good lubricating effect, is not easy to deteriorate, and has strong comprehensive performance.

The invention discloses a continuous casting method of aluminum-containing peritectic high-strength automobile steel, which comprises: opening a stopper rod, an upper nozzle and three channels between plates in a tundish during the molten steel pouring process of aluminum-containing peritectic high-strength automobile steel Argon blowing; mold flux is used for protective pouring, and the chemical composition of mold flux includes: Al 2 o 3 : 1.2%~1.6%, CaO: 35%~45%, SiO 2 : 30%~35%, F: 8%~12%, Na 2 O+K 2 O: 1.0% to 2.0%, MgO: 0.8% to 1.0%, C: 4% to 6%. The process is used to control the heat flux density of the meniscus region of the crystallizer to 1.0-2.0MW·m ‑2 ; The continuous casting machine adopts the preset casting speed to pull out the billet of aluminum-containing peritectic high-strength automobile steel; the second cooling section of the continuous casting adopts the second preset weak cooling process. Through the above scheme, the surface cracks and bonding defects of the slab are significantly reduced.

The invention belongs to the field of lead acid battery technology, and concretely relates to a production system of lead acid battery PE separators. The production system is used for solving the six following problems: a secondary oiling system is used in order guarantee reasonable viscosity of a mixed material; a traditional coating method of a hydrophilic surfactant is changed; a system for prepressing, secondary pressing, and third pressing is used during pressing of a stiffener; a method for opposite pressing with adjustable spacing is employed, pressing distances can be adjusted according to custom demands, adjustment of rollers is not needed, and continuous production can be carried out for improving productivity; three drying systems are provided for a chemical reagent circulating apparatus. The production system has outstanding industrial practicality, and compared with traditional production systems, product quality and production efficiency are greatly improved. The production system is environmental friendly and can protect health of workers. The production system has especially outstanding progress.

The invention relates to the field of secondary battery and particularly provides an electrolyte solution for a sodium-ion battery, a preparation method and a sodium-ion battery comprising the electrolyte solution for the sodium-ion battery. The electrolyte solution for the sodium-ion battery comprises an electrolyte and a solvent, wherein the electrolyte mainly is sodium nitrate; and the polarityof the solvent is greater than or equal to 4. The electrolyte solution has the advantages of being low in price, high in security, low in sensitivity to moisture and low in requirement on the batterypreparation environment. The sodium-ion battery comprising the electrolyte solution for the sodium-ion battery has the advantages of being high in charge-discharge efficiency, good in cycle performance, high in security, wide in operating temperature range and low in cost.