36results about How to "Shorten hydration time" patented technology

This invention provides an aqueous / t-butanol solvent-system, facile reconstitute, submicron-reconsitiute preliposome-lyophilaye and method of its preparation and use.In one embodiment this entails a modified method for the preparation of a submicron and stable liposome formulation of the non-cross-resistant anthracycline Annamycin is described. The optimal lipid composition was DMPC:DMPG at a 7:3 molar ratio and the optimal lipid:drug weight ratio 50:1. The selected formulation is a preliposome lyophilized powder that contains the phospholipids, Annamycin, and 1.7 mg Tween 20 per mg of Annamycin. The liposome suspension is obtained on the day of use by adding normal saline at 37° C. (1 ml per mg Annamycin) and hand-shaking for one minute. The presence of Tween 20 is essential in shortening the reconstitution step (from >2 hours to 1 minute), avoiding the early formation of free drug crystals, and reducing the median particle size (from 1.5 μm to 0.15-0.20 μm) without destruction of the liposome vesicles. The chemical stability of the preliposome powder at room temperature was >3 months and the chemical and physical stability of the liposome suspension at room temperature >24 hours. The in vitro cytotoxicity of the formulation was equivalent to that prepared by the standard evaporation method. The results of the study indicate that small amounts of surfactant may be used to enhance the reconstitution step and reduce the liposome size of lyophilized liposome formulations of lipophilic drugs.

The invention relates to a process method used in the preparation of Alpha-semi-hydrated gypsum by chemical gypsum. The invention comprises the following process steps: chemical gypsum is prepared inside a slurry tank with the concentration ranging between 50 percent and 85 percent according to weight percentage; meanwhile, habit modifier and surface active agent are added in; the prepared slurry is fed in an initial reaction kettle to complete primary reaction with the reaction temperature ranging between 100 DEG C and 220 DEG C, the pressure ranging from 0.15MPa to 1.3MPa, the stirring speed kept between 20 revolutions / minute to 100 revolutions / minute and the dynamic residence time range varying between 5 minutes to 60 minutes; then, primary reaction material is fed to a severe reaction kettle to complete severe reaction with reaction temperature ranging between 100 DEG C and 220 DEG C, the pressure ranging from 0.14MPa to 1.29MPa, the stirring speed kept between 20 revolutions / minute to 100 revolutions / minute and the dynamic residence time range varying between 5 minutes to 60 minutes; finally, severe reaction material is fed to a pressure release tank through a relief valve and then is fed to a flash evaporation drier to be scattered, crushed and dried, thereby obtaining powder product. The entire technological process of the invention reduces the hydration time of gypsum, thereby realizing fast drying and continuous production; moreover, technological flow is reduced and the performance of high-strength gypsum powder is increased.

The invention belongs to the field of electronic processing and in particular relates to a forming agent with the capabilities of shortening hydration time and improving water resistance of a formed foil, a water-resistance formed foil and a forming method of the water-resistance formed foil. The invention provides a novel application of the forming agent prepared by utilizing maleic acid for improving the water resistance of the formed foil and shortening the hydration time and also purposes of increasing the electrostatic conversion rate and the flex conversion rate of the formed foil. The forming agent is prepared from the following raw material in percentage by weight: 0.001-0.004 percent of the maleic acid. According to the forming agent disclosed by the invention, by adding the maleic acid, the purposes of inhibiting generation of gamma'-Al2O3, increasing the production amount of gamma-Al2O3 and improving the water resistance of the formed foil are achieved; compared with the prior art, the forming agent is stable and controllable in production and low in consumption of phosphoric acid.

The invention provides a polycarboxylic acid concrete plasticizer which is formed by copolymerization of three monomers A, B and C and is a polymer with the weight-average molecular weight of 15000-40000, wherein the three monomers are as follows by weight percent: monomer A is 60-70%, monomer B is 20-30% and monomer C is 5-10%; the structure of the monomer A is shown by the following formula, wherein R1 is alkyl group with less than or equal to five carbon atoms or hydrogen atom; m and n are integers within the range of 0-5; A, B, C, D , E, G, H, J and K are respectively integers within the range of 0-30, but not simultaneously 0; the monomer B is the mixture of more than two of acrylic acid, methacrylic acid, maleic acid, maleic anhydride or maleic anhydride salt; and the monomer C is the mixture of more than two of sodium methyl acryl sulfonate, sodium vinylsulphonate, styrene sodium sulfonate or 2-acrylic amide-2-methyl acrylic acid. The concrete plasticizer has the characteristics of good compatibility with various cements, and high water reducing rate and anti-collapse performance. The invention also provides a preparation method of the plasticizer.

The invention discloses an improved continuous linseed oil degumming process, which comprises the following steps of firstly adding water and raising the temperature for hydration; then, adding a flocculating agent for flocculation treatment; finally, performing low-temperature flocculation and high-temperature dissolution through a spiral flow passage; finally, performing fine filtering through afilter. The process provided by the invention has the advantages that the defects in the prior art can be overcome; the degumming efficiency of the continuous degumming process is improved.

The invention discloses a method for reducing heat release during hydration of magnesium oxychloride cement. The method for reducing heat release during hydration of magnesium oxychloride cement comprises the following steps: uniformly mixing magnesium oxide, magnesium chloride, water and a chemical additive to form magnesium oxychloride cement, wherein mass ratio of magnesium oxide to magnesium chloride to water is (1.2-2.8):1:(2-3.2), and mass ratio of chemical additive to magnesium chloride is (1-3):100. The method for reducing heat release during hydration of magnesium oxychloride cement has the advantages that the chemical additive is doped in a magnesium oxide-magnesium chloride-water ternary raw material system, and the aims of reducing heat release during hydration of magnesium oxychloride cement and prolonging ending time of an induction period and ending time of an acceleration period are achieved.

The invention discloses an air heating furnace cooling water supply system and a control method, and belongs to the field of ferrous metallurgy. The air heating furnace cooling water supply system comprises multiple air heating furnace valves, an intermediate pressure water supply pump set and a secondary booster pump chamber. A switching valve I and a connecting pipe are arranged on a soft waterpipeline output from the secondary booster pump chamber. Communicated soft water pipeline branches enter the air heating furnace valves and a blast-furnace tuyere medium sleeve. A three-way pipe is arranged on soft water pipelines output from the air heating furnace valves, soft water sequentially flows through a water inlet pipe and a water outlet pipe of the three-way pipe, a branch pipe is connected with a drainage pipe of the three-way pipe, and a switching valve III is arranged on the drainage pipe. A switching valve II is arranged on the soft water pipeline connected with the water outlet pipe. According to the air heating furnace cooling water supply system and the control method, the air heating furnace valves and cooling water of blast furnace equipment can be connected together and can operate independently, it is guaranteed that a blast furnace can carry out cooling wall piping when the air heating furnace valves are cooled, washing water can be fast provided during blast furnace cooling wall washing, and even cooling of the air heating furnace valves is not influenced during blast furnace staying maintenance.

The invention discloses a method for reducing hydration heat release of magnesium oxychloride cement. The method comprises the following steps: mixing ore-mixed magnesium oxide, magnesium chloride, water and a chemical admixture at the mass ratio of (1.2-2.8) to 1 to (2-3.2), so as to form the magnesium oxychloride cement, wherein the ore-mixed magnesium oxide comprises magnesium oxide and a mineral admixture, the mass ratio of the mineral admixture to the ore-mixed magnesium oxide is (1-6) to 20, and the mass ratio of the chemical admixture to the ore-mixed magnesium oxide is (1-3) to 100. According to the method, the chemical admixture and the mineral admixture are doped into a magnesium oxide-magnesium chloride-water ternary material system in the preparation process of the magnesium oxychloride cement, and thus the targets that the hydration heat release of the magnesium oxychloride cement is reduced, the induction period end time and the acceleration period end time are prolonged, meanwhile, the amount of the raw material-magnesium oxide is replaced with addition of the mineral admixture can be achieved; and the cost of the magnesium oxychloride cement can be reduced to a certain extent.

The present invention relates to a kind of method that uses magnesite as raw material to prepare flaky monodisperse nano-magnesium hydroxide, specifically, magnesite is calcined, and the magnesite powder and magnesia powder with different activity of each component produced by calcining Make a solution with a certain concentration and stir it, then add it to the acidification stirring mill for grinding and acidification. By controlling the amount of magnesium oxide powder and hydrochloric acid and the acidification reaction conditions, the purification and impurity removal of magnesium oxide powder is realized. By controlling the oxidation of the hydrated magnesium hydroxide precursor Magnesium activity and particle size as well as hydration conditions, prepared flake nano-magnesium hydroxide. The hydrochloric acid, water and additives in the present invention can be recycled, and are environmentally friendly and low in cost. This process can revitalize existing magnesite resources and realize high value-added processing and utilization of resources.

The invention relates to an early strength durable hole sealing material based on hydration controlled-release aluminate cement and an application method. The sealing material is controllable in condensation, easy to construct and sufficient in gas expansion. An aluminate-silicate composite cement system with a certain matching ratio is adopted, and an appropriate amount of aluminum powder and resin high polymer materials are added. A grinding technology is adopted for preferentially grinding aluminate cement clinker and resin, and micro resin particles are adsorbed to the surfaces of mineral particles of the aluminate cement clinker. In the construction process, after the materials make contact with water, resin wrapping the surface of the clinker particle surfaces reacts with water to form an interwoven coating film, slow release control over hydration of aluminate mineral can be achieved, the forming speed and amount of ettringite, hydrated aluminate and other products are adjusted, the setting time of the sealing material can be effectively delayed, construction is convenient, the sealing material is allowed to be continuously expanded in a sealed hole, high early strength is provided for the material, hydration shrinkage of a silicate phase is compensated for, and the hole sealing material can be continuously and durably used.

The invention discloses a method for reducing hydration heat release of a magnesium cement material. The method comprises the following steps: mixing ore-doped magnesium oxide, magnesium chloride and water at the mass ratio of (1.2-2.8) to 1 to (2-3.2) evenly, so as to form the magnesium cement material, wherein the ore-doped magnesium oxide comprises magnesium oxide and a mineral admixture; and the mass ratio of the mineral admixture to the ore-doped magnesium oxide is (1-6) to 20. According to the method disclosed by the invention, the mineral admixture is doped into a ternary material system of magnesium oxide-magnesium chloride-water in the preparation process of the magnesium cement material, so that the hydration heat release of the magnesium cement material is reduced; the induction period end time and the acceleration period end time are prolonged; and meanwhile, the amount of the raw material magnesium oxide is replaced with addition of the mineral admixture, so that the cost of the magnesium cement material can be reduced to a certain extent.

The invention discloses a strong-flavor oil enzymatic-process degumming process, is used for solving the problems of relatively large oil product loss, relatively high water content, relatively long degumming time, non-thorough degumming, relatively high phosphorus content, not easy long-term preservation and the like in the prior art, and is characterized in that trace active phospholipase is added in crude oil for degumming, and the process comprises the following specific process steps: measuring the quantity of oil products in a hydration tank with a ruler, calculating the mass of an enzyme required to be added and the mass of soft water required to be added, measuring the temperature of the crude oil, then adding the soft water and the active phospholipase in a stirring heating-up process, stopping stirring, then naturally settling for 2-4 hours, discharging oil foots, starting up a refrigerating unit for cooling hydration oil, starting to filter oil when the temperature is dropped to about 25 DEG C, and completing the process after the oil filtration is completed. The process has the advantages of advanced process, thorough degumming, resource saving, quality improving and the like, and can be widely applied for degumming in a strong-flavor oil production workshop.

The invention discloses a rapeseed oil hydration degumming method. The method comprises the following steps: heating raw oil of rapeseed oil, which is obtained by performing filtration to remove the residual cake meal, to 80-90 DEG C, storing the heated raw oil in an oil storage tank, and keeping the oil temperature at 80-90 DEG C; preparing a saline solution of 10-15 wt%, heating the saline solution to 80-90 DEG C, storing the heated saline solution in a saline solution tank, and keeping the saline solution temperature at 80-90 DEG C; delivering the raw oil in the oil storage tank to a hydration storage tank at the speed of 0.01-0.03m / s through an oil delivery pipe, adding the saline solution in the saline solution tank to the center of the oil delivery pipe which is 4.0-5.0m away from the hydration storage tank, allowing the raw oil and saline solution to be mixed, and enabling the mixture of the raw oil and saline solution to continuously flow into the hydration storage tank, wherein the speed of addition of the saline solution into the oil delivery pipe is 0.01-0.03m / s; and performing centrifugal separation on the mixture of the raw oil and saline solution in the hydration storage tank to remove gum deposits, thereby obtaining hydration-degummed oil. According to the rapeseed oil hydration degumming method, the saline solution is added to the center of the oil delivery pipe, so the saline solution and oil are uniformly mixed in the pipe, thereby greatly enhancing the hydration efficiency, shortening the hydration time, and greatly reducing the content of phospholipid in the hydration-degummed rapeseed oil.

The present application relates to the technical field of building fire protection, in particular, to an intelligent building system. The intelligent building system includes a water storage component, a pipeline component, a spray component, a detection component, a valve component, a pressure component and a controller; wherein, the water storage component includes a main water tank and a plurality of sub-water tanks, and the main water tank is located on the top of the building, Sub-water tanks are distributed on each floor of the building; the main water tank is communicated with the building water supply system; the pipeline assembly includes a first main water pipe and a plurality of sub-water pipes; the first main water pipe is communicated with the main water tank; the first main water pipe includes a plurality of sub-sections , a plurality of sub-sections are connected in turn, and each sub-section corresponds to a floor; a plurality of sub-water pipes are in one-to-one correspondence with a plurality of sub-water tanks, and one end of each sub-water pipe is connected with the sub-section of the same floor, and the other sub-water pipe One end is respectively connected with the corresponding sub-tank; the intelligent building system can not only prevent fires, but also play a role in supply guarantee for fire-fighting water supply.

The invention provides a preparation method of EGCG liposome gel and the EGCG liposome gel. According to the method, EGCG liposome with small particle size and high encapsulation efficiency is formedthrough ethanol injection and high-speed dispersion and then is loaded into gel, so as to form PVA / HA / EGCG liposome gel. The gel does not introduce chemical crosslinking agent, and is milder, greener,and good in biocompatibility. In addition, the PVA / HA / EGCG liposome gel has better slow-release effect than PVA / HA / EGCG gel. The release rate of EGCG can be controlled through control of the contentsof PVA and HA. The gel has a potential application value in terms of active matter slow release of cosmetics and drug controlled release of biological medicine.

The invention relates to a cooling water supply system and a buffer water supply method thereof. The system comprises a fast cooling water tank, fast cooling collecting pipes, a fast cooling water supply pump, a speed regulating device and a fast cooling overflow pipe, wherein the fast cooling water tank is communicated with a laminar flow water tank through a laminar flow overflow pipe; the fast cooling collecting pipes are communicated with the fast cooling water tank through a fast cooling water supply pipe; the fast cooling water supply pump is arranged on the fast cooling water supply pipe; the speed regulating device is arranged between the fast cooling water supply pump and a motor and communicated with a hot rolling production line through a logic circuit; one end of the fast cooling overflow pipe is arranged in the fast cooling water tank, and the other end extends into a water return groove. The method comprises steps as follows: the laminar flow water tank and the fast cooling water tank are filled with cooling water; when the hot rolling production line transmits a flying shear loading signal, the speed regulating device performs speed increase regulation; when the head part of band steel on the hot rolling production line is close to the first fast cooling collecting pipe, a spray nozzle of the fast cooling collecting pipe is opened; when the tail part of the band steel leaves the last fast cooling collecting pipe, the speed reducing regulation is performed. The system and the method can meet requirements of the hot rolling production line for water supply amount and water pressure under the ultra-fast cooling process condition.

The invention provides an energy-saving sheet material for a park road and a preparation method of the energy-saving sheet material, and relates to the field of road sheet materials. The energy-saving sheet material for the park road is prepared from the following raw materials in parts by weight: 14 to 20 parts of quartz sand, 30 to 35 parts of crushed stone, 20 to 30 parts of cement, 20 to 25 parts of waste gypsum boards, 1.2 to 1.5 parts of glass fiber, 10 to 15 parts of building waste plastic, 25 to 30 parts of waste phenolic aldehyde foam, 15 to 21 parts of heat-insulation cotton, 15 to 20 parts of fly ash, 10 to 15 parts of ceramic waste residue, 0.6 to 0.8 part of a retarder, 0.8 to 1.6 parts of a water reducing agent and 3 to 7 parts of water; the preparation method of the energy-saving sheet material for the park road comprises the following steps: weighing the raw materials, stirring, pouring, de-molding, stacking and curing. By adopting the energy-saving sheet material for the park road and the preparation method thereof, provided by the invention, the problem that road sheet materials, which have the advantages of energy saving and environment protection, high compression strength, good durability, good fireproof and anti-freezing properties and good sound insulation and heat insulation effects, are lacked in a current market of sheet materials for the park road is solved.

The invention discloses an improved continuous linseed oil degumming process, which comprises the following steps of firstly adding water and raising the temperature for hydration; then, adding a flocculating agent for flocculation treatment; finally, performing low-temperature flocculation and high-temperature dissolution through a spiral flow passage; finally, performing fine filtering through afilter. The process provided by the invention has the advantages that the defects in the prior art can be overcome; the degumming efficiency of the continuous degumming process is improved.

The invention relates to the field of dental medical treatment and in particular discloses fluorine-strengthened bioactivity mineral powder and a preparation method and an application thereof. The component system of constitution of the mineral powder is as follows: SiO-CaO-Na2O-P2O5-F. The powder comprises the following components in percentages by weight: 40-55% of SiO2, 15-30% of CaO, 15-30% of Na2O, 2-12% of P2O5 and 0.01-6% of F. According to the invention, by taking sodium monofluorophosphate as an importing components of fluorine element and controlling the mass ratio of sodium monofluorophosphate and phosphorus pentoxide added at 0.8-1.2, in a processing course, the loss of a volatile matter phosphorus pentoxide can be effectively reduced at a melting temperature of a material, so that calcium, phosphorus and fluorine in the material better meets a pre-designed proportion. By means of a shock chilling function of water, the amorphous state with more intermediate states is more easily formed, so that more crystal hydroxyapatite is formed during a reaction with water and is of higher activity. In the reaction process of the mineral powder and water, a phosphate component is further generated, thereby forming a better environment for generation of hydroxyapatite.

The invention provides a polycarboxylic acid concrete plasticizer which is formed by copolymerization of three monomers A, B and C and is a polymer with the weight-average molecular weight of 15000-40000, wherein the three monomers are as follows by weight percent: monomer A is 60-70%, monomer B is 20-30% and monomer C is 5-10%; the structure of the monomer A is shown by the following formula, wherein R1 is alkyl group with less than or equal to five carbon atoms or hydrogen atom; m and n are integers within the range of 0-5; A, B, C, D , E, G, H, J and K are respectively integers within the range of 0-30, but not simultaneously 0; the monomer B is the mixture of more than two of acrylic acid, methacrylic acid, maleic acid, maleic anhydride or maleic anhydride salt; and the monomer C is the mixture of more than two of sodium methyl acryl sulfonate, sodium vinylsulphonate, styrene sodium sulfonate or 2-acrylic amide-2-methyl acrylic acid. The concrete plasticizer has the characteristics of good compatibility with various cements, and high water reducing rate and anti-collapse performance. The invention also provides a preparation method of the plasticizer.

The invention belongs to the field of electronic processing and in particular relates to a forming agent with the capabilities of shortening hydration time and improving water resistance of a formed foil, a water-resistance formed foil and a forming method of the water-resistance formed foil. The invention provides a novel application of the forming agent prepared by utilizing maleic acid for improving the water resistance of the formed foil and shortening the hydration time and also purposes of increasing the electrostatic conversion rate and the flex conversion rate of the formed foil. The forming agent is prepared from the following raw material in percentage by weight: 0.001-0.004 percent of the maleic acid. According to the forming agent disclosed by the invention, by adding the maleic acid, the purposes of inhibiting generation of gamma'-Al2O3, increasing the production amount of gamma-Al2O3 and improving the water resistance of the formed foil are achieved; compared with the prior art, the forming agent is stable and controllable in production and low in consumption of phosphoric acid.

Disclosed is a biocompatible, hemostatic, cross-linked gelatin composition comprising a biocompatible material comprising cross-linked gelatin and a sufficient amount of wetting agent to permit uniform wetting of the sponge in the presence of an aqueous solution.

The invention relates to the field of dental medical treatment and in particular discloses fluorine-strengthened bioactivity mineral powder and a preparation method and an application thereof. The component system of constitution of the mineral powder is as follows: SiO-CaO-Na2O-P2O5-F. The powder comprises the following components in percentages by weight: 40-55% of SiO2, 15-30% of CaO, 15-30% of Na2O, 2-12% of P2O5 and 0.01-6% of F. According to the invention, by taking sodium monofluorophosphate as an importing components of fluorine element and controlling the mass ratio of sodium monofluorophosphate and phosphorus pentoxide added at 0.8-1.2, in a processing course, the loss of a volatile matter phosphorus pentoxide can be effectively reduced at a melting temperature of a material, so that calcium, phosphorus and fluorine in the material better meets a pre-designed proportion. By means of a shock chilling function of water, the amorphous state with more intermediate states is more easily formed, so that more crystal hydroxyapatite is formed during a reaction with water and is of higher activity. In the reaction process of the mineral powder and water, a phosphate component is further generated, thereby forming a better environment for generation of hydroxyapatite.

The invention belongs to the technical field of building mortars, and discloses an anti-cracking mortar for repairing decoration pipeline wall slots. The anti-cracking mortar is prepared from, by weight, 0.9-1.5 parts of Portland cement, 0.2-0.6 part of gypsum powder, 4.2-6.4 parts of medium sands, 0.8-1.2 parts of water and 0.16-0.24 part of fibers, and additives which are 0.14-0.20 wt% of a water retaining agent and 0.14-0.20 wt% of rubber powder are further added. The problem of scars formed by hollowing and cracking of a subsequent fine decoration surface after repairing of pipeline wall slots with mortars in the prior art is solved in the invention. The anti-cracking mortar for repairing decoration pipeline wall slots has a certain repairing bonding strength, has a small shrinkage ratio and a short hydration time in the hydration and condensation process, and realizes the non-cracking of repaired walls and wall slots.

The invention discloses a rain box capable of accurately controlling rainfall and a test method for accurately controlling rainfall of the rain box, the rain box comprises a test box body, the test box body comprises a rain disc, a sample turntable and a water tank, the water tank comprises various functional holes, and circulating water is adopted in a rain test. The waterway principle of the method for accurately controlling the rainfall comprises a ball valve, a water pump, a bypass proportional valve, a flow meter, a precision filter, a pressure sensor, a water inlet electromagnetic valve,a rain tray, a needle head, a liquid level floating ball, an emptying electromagnetic valve, a ventilation electromagnetic valve and an air pressure regulator. The beneficial effects of the inventionare that the rainfall control method achieves the PID automatic and precise regulation and control of the rainfall; the first water supplementing time problem is solved; after water is replenished, the water in the water disc can be locked, and when a sample is replaced or other rainfall tests are set, the test can be directly started without replenishing water again.