43results about How to "Viscosity effect" patented technology

The invention discloses a double-action plunger-type deicing liquid pump for airplane deicing liquid operation. Two plunger pump cylinders in the same structure are connected into an integral body by a crank connecting link through a piston, the plunger pump cylinders are divided into two regions, and each region is provided with a non-return valve; one power source is used for driving the two plunger pumps to work simultaneously; a liquid feed channel is connected with a liquid feed non-return valve on each plunger pump cylinder; a liquid discharge channel is connected with a liquid discharge non-return valve on each plunger pump cylinder, and the outlet of the liquid discharge channel is provided with an injection gun; and the plunger pump cylinders, liquid feed channels and liquid discharge channels are made of stainless steel. Compared with single-action pumps with the same flow rate, the double integrated pumps can raise the pressure of the injected fluid and increase the injection distance. Compared with centrifugal pumps, the frictional heat of the invention generated in the working process is very low so as not to influence the viscosity of the deicing liquid, and the invention can well maintain the characteristics of the deicing liquid. The invention is mainly used as a special pump for airplane deicing liquid for deicing and anti-icing operations.

The invention relates to heat conduction silicone grease as well as a processing method and application thereof. The heat conduction silicone grease is prepared from substances of simethicone, heat conduction filling materials, coupling agents, auxiliary agents, methylsilicone oil, gas phase silicone and the like. In the prior art, when the heat conduction silicone grease with high viscosity is used, a surface coating method is generally used, i.e., a thick layer of heat conduction silicone grease coats on the surface of an electronic device; then, a heat radiation fin is adhered onto the heatconduction silicone grease. By using the operation mode, the consumption of the heat conduction silicone grease is great; in addition, pores can be easily generated between the heat radiation fin andthe heat conduction silicone grease. When the heat conduction silicone grease provided by the scheme is used, the heat conduction silicone grease can be dripped into the electronic device; then, theheat radiation sheet can be adhered onto the heat conduction silicon grease by force; the viscosity of the heat conduction silicone grease is low, and the flowability is good, so that during the adhesion on the heat radiation fin by force, the heat conduction silicone grease completely fits the shape of the two opposite sides of the heat radiation fin and the electronic device; the heat radiationeffect reduction due to pore remaining between the heat radiation fin and the electronic device can be avoided.

The invention discloses a medicine-lipiodol solvent and a preparation method thereof. According to the invention, a lipiodol injection and medicine molecules are dissolved and fully mixed under rapidstirring by utilizing high pressure, and a small molecule medicine is dispersed in the lipiodol after pressure reduction to prepare the uniformly mixed medicine-lipiodol solvent. The prepared medicine-lipiodol solvent has controllable morphology, long-term stability, slow medicine release rate compared with a medicine-lipiodol mixed suspension and emulsion, and the medicine molecules do not significantly affect the physical and chemical properties such as the viscosity of lipiodol. The medicine-lipiodol solvent is first embolized by injection through the hepatic artery in the treatment of liver cancer, then, the medicine molecules in the medicine-lipiodol solvent can further exert a sustained-release therapeutic effect. The method provided by the invention is a good method for combined treatment of lipiodol embolism.

The invention belongs to the field of cosmetics, in particular to dense silicon dioxide coated pearl powder. The pearl powder is prepared from PEG-1000, pearl powder, a sodium silicate solution and a sulfuric acid solution by pulping, grinding, costing, washing with water, drying and pulverizing with air flows, wherein the pearl powder is nano pearl powder of which the grain size is smaller than 200 nm. The invention has the advantage of simple process, and the provided dense silicon dioxide coated pearl powder has the advantages of good coating effect, complete coating and no floccules among granules and can be widely applied to emulsions and cream in cosmetics and beneficial to promoting the combination development of the cosmetics and pearls so as to greatly widening the application range of the pearl powder in the cosmetics.

The invention relates to a low-sulfur diesel lubricating anti-wear agent, which is prepared by uniformly mixing at least one ester oily component, at least one amide oily component and at least one low-sulfur solvent component in a mechanical blending manner to make. The present invention starts from the reality of improving the wear resistance of low-sulfur diesel oil, and has the functions of increasing lubrication, improving oxidation stability, and high-efficiency cleaning. The quality of diesel products produced by the factory is high, and the addition process is simple, which can reduce production costs while improving product quality. The lubricating antiwear agent prepared by the invention can be applied to low-sulfur diesel oil, and can obviously improve the lubricating performance of the diesel oil.

The invention relates to a preparation method and application of a low-activity MDI-50 product; the preparation method comprises the steps: controlling the proportion of 2,4-diphenylmethane diisocyanate and 4,4-diphenylmethane diisocyanate isomers and the content of free chlorine in an online diphenylmethane diisocyanate mixture in a rectifying tower, and enriching the free chlorine through a crystallization process; and then adding a diphenyl methane diisocyanate mixture with low impurity content and high content of 2,4-diphenyl methane diisocyanate for blending to obtain the MDI-50 product with free chlorine content of 5-20 ppm. The MDI-50 product is applied to the field of laminating adhesives, thereby being beneficial to stable control of viscosity in the application process in the field of laminating adhesives.

Powdered overbased amorphous alkaline earth salts are made which consist essentially of isolated solid agglomerated micelles of amorphous alkaline earth metal salts complexed with an amorphous alkaline earth metal carboxylate of a fatty acid. The process for making the powder involves precipitating and isolating the solid particles from liquid overbased alkaline earth metal compositions.

The invention discloses a device and a method for testing cavitation characteristics of materials in a polymer solution. The device comprises a magnetostriction oscillator, a test tank filled with polymer solution test liquid and a test liquid circulating system. The testing method disclosed by the invention comprises the steps: standing the polymer solution to ensure that the polymer solution which meets a viscosity stabilizing period is poured into the test tank, and turning on the magnetostriction oscillator and the test liquid circulating system to enable the polymer solution to flow in the device in a circulating manner. According to the method, the stable characteristic of the polymer solution liquid in a process of testing the cavitation characteristics of the materials is ensured, and an influence of the polymer solutions with different concentrations at different temperatures on the cavitation characteristics of the materials can be obtained. According to the device and the method disclosed by the invention, the problem of the change of the characteristic of the polymer solution liquid in the process of testing the cavitation of the materials in the polymer solution is solved well, and in particular the problem of obvious reduction of the viscosity is solved well; moreover, a method for exploring the cavitation rules of different materials in the polymer solution is provided.

The invention relates to high-temperature-resistant waterproof emulsified asphalt. The high-temperature-resistant waterproof emulsified asphalt with a pH (potential of hydrogen) value of 3-8 is characterized by comprising, by weight, 2%-4% of emulsifiers, 40%-45% of matrix asphalt, 10%-20% of latex, 0.1%-1% of additives I, 0.1%-1% of additives II and the balance water. The high-temperature-resistant waterproof emulsified asphalt has the advantages that the high-temperature-resistant waterproof emulsified asphalt is excellent in performance, and the heat resistance, the toughness and the storage stability can be effectively improved.

The invention discloses a preparation method of special talc powder for a coating pigment, and belongs to the technical field of pigment additives. The preparation method comprises the following steps: firstly heating, carrying out pressurization and stirring the talc powder, phospholipid and water, and then performing filtering, washing, drying and calcination to obtain pretreated talc powder; carrying out ball-milling and mixing the pretreated talc powder and an inorganic strong acid solution to obtain a ball abrasive, filtering the ball abrasive, and performing washing and drying to obtainball-mill modified talcum powder; and ultrasonically dispersing the ball-milled modified talc powder, polyvinylpyrrolidone and water to obtain dispersion liquid, dropwise adding tetraethyl orthosilicate to the dispersion liquid under stirring, after dropwise adding tetraethyl orthosilicate, continuously stirring, discharging, filtering, washing and drying to obtain coated modified talcum powder; calcining the obtained coated modified talc powder, cooling with a furnace, and discharging, thereby obtaining the special talcum powder for the coating pigment. The special talc powder for the coatingpigment prepared by the technical scheme of the invention has the characteristics of low viscosity and high wettability.

A rare-earth-containing glass material having a composition, expressed in mole percentages on and oxide basis, comprising: SiO2: 66-75 Al2O3: 11-17 B2O3: 0-4 MgO: 1-6.5 CaO: 2-7 SrO: 0-4 BaO: 0-4 Y2O3: 0-4 La2O3: 0-4 Y2O3+La2O3: 0.1-4. The inclusion of Y2O3 and / or La2O3 in the composition reduces the T2.3 of the glass thereby allowing higher annealing-point glasses to be produced. The glass is particularly useful for low-temperature polycrystalline silicon-based semiconductor devices.

The invention discloses a normal-temperature preservation solution, preparation method and application of a biofilm. The preservation solution includes low-melting point agarose, polysaccharide, structure protection agent and buffer solution. The preservation solution of the invention can wrap the preserved object when used Among them, the chain segment movement of the preserved substance is restricted, so that the biological extracellular matrix sample can be preserved at room temperature for a long time, or its storage temperature can be increased. The preparation method is simple, the use is convenient, the equipment and power consumption required for preservation can be reduced, the storage and transportation are convenient, the cost is reduced, and the economy of production and use is improved.

The invention provides a preparation method of bainite steel which is high in purity, better in hardness, more excellent in wear resistance and corrosion resistance and excellent in low-temperature impact toughness by improving the components and controlling the smelting process, the refining process and the continuous casting process. The method specifically comprises the steps of KR method molten iron pretreatment, top-bottom combined blown converter smelting, LF furnace refining, VD treatment, square billet continuous casting, rolling and heat treatment.

The invention discloses a preparation method and application of a profile control agent, and belongs to the field of profile control plugging. The method comprises the following steps: sequentially adding water and natural rice husks into a liquid preparation tank at a preset temperature, and uniformly mixing to obtain a first suspension; adding an oxidizing agent into the first suspension, stirring for a first preset time, and decomposing carbon-carbon double bonds, carbon-oxygen bonds and benzene rings in lignin contained in the natural rice husks to obtain a second suspension; adding a pH value regulator into the second suspension, and regulating the pH value of the second suspension as a reference value to obtain a third suspension; and adding polyacrylamide and a cross-linking agent into the third suspension, and uniformly mixing to obtain the profile control agent. The natural rice husks in the profile control agent basically do not contain lignin, that is, the lignin contained in the natural rice husks does not influence the viscosity of the profile control agent, so that the profile control and channeling sealing capabilities of the profile control agent can be improved. The profile control agent is mild in reaction condition, simple in preparation method, easy to operate and free of pollution.

The invention relates to a preparation method of hydrophilic acrylamide-based crosslinked polymer microspheres. The method includes the steps of: 1) adding methacryloyloxyethyl trimethyl ammonium chloride into distilled water, then adding 2, 2-azo(2-methylpropylamidine)dihydrochloride, stirring the substances evenly, then introducing nitrogen gas and performing water bath heating; 2) taking out the reactants, first performing washing with ethanol three times, then adding acetone for dilution, then conducting drying in an oven, and performing crushing; 3) adding ammonium sulfate into distilledwater, conducting stirring dissolving to obtain an ammonium sulfate solution; 4) adding acrylamide, DMC, acrylic acid, 2, 2-azo(2-methylpropylamidine)dihydrochloride, a co-crosslinking agent and a dispersant into the ammonium sulfate solution obtained in step 3) in order and performing dissolving; and 5) introducing nitrogen gas into the above solution and performing water bath heating, thus obtaining the hydrophilic acrylamide-based crosslinked polymer microspheres. The method provided by the invention has the characteristics of simple operation, environment-friendly process and wide application range, and solves the problem that micron-sized monodisperse polymer microspheres with hydrophilcity and a cross-linked structure at the same time cannot be obtained in the prior art.