44results about How to "Adjustable dosage" patented technology

The invention discloses a polluted site underground water processing-soil ex-situ leaching restoration integral method. The method comprises the steps that: extracted underground water is purified by using organic bentonite, and is discharged into a water storage tank and is used in a soil leaching process; with a multilevel wet vibration sieve, stones and coarse sand are separated from soil; a soil suspension liquid obtained by sieving enters a hydrocyclone; fine particles smaller than 0.05mm are processed and discharged into a frame filter press, and pollutants are removed with a thermal desorption method; particles larger than 0.05mm and the coarse sand are delivered into a leaching tank; a leaching liquid is a surfactant solution; stirring and ultrasonic processing are carried out, and standing sedimentation is carried out; upper-layer water phase is subjected to filtering and organic bentonite purification, and is discharged into a dispensing tank; lower-layer soil is delivered into a washing tank; stirring and ultrasonic processing are carried out, and standing sedimentation is carried out; soil phase is discharged into the frame filter press; and the soil reaches a standard and can be backfilled. With the method, underground water and soil synchronous restoration and leaching liquid recycling are realized. The method is easy to realize, and can be widely applied. The method can be used in polluted site soil and underground water restoration projects.

The invention discloses a method for controlling temperature of a steelmaking melting pool of a converter by blowing CO2 gas, which belongs to the filed of convertor steel making and relates to a converter dephosphorization technology. The invention sprays CO2 gas (or mixed gas of CO2-O2) into the melting pool of the converter and realizes the smooth temperature increase of the melting pool by regulating the proportion of V[CO2] / (V[O2]+V[CO2]). The proportion of V[CO2] / (V[O2]+V[CO2]) is controlled at 10%-100% at the early and middle stages of melting (3-5min), the total flow rate of the blowing gas is 100-80000Nm / h, bottom blowing and strong stirring are adopted at this time, and the temperature is controlled between 1300 DEG C and 1400 DEG C. The proportion of V[CO2] / (V[O2]+V[CO2]) is adjusted and controlled at 10%-50% at the middle stage of melting according to desilication and dephosphorization situation and the temperature of the melting pool, and the flow rate of the blowing gas is 100-80000Nm / h. The method is applicable to the converter steel making of 30-300 tons, the dephosphorization rate can achieve 85%-95% by adopting the method, and the rephosphorization rate after slag dumping is lower than 3%.

The invention provides a cement-based material used for building 3D (three-dimensional) printing; the cement-based material is high in plasticity and early strength, can be timely adjusted in setting time according to raw material composition and temperature of a construction environment, and is suitable for printing building components different in marks. The cement-based material used for building 3D printing is prepared from the following materials in mixing composition ratios: 400 kg of cementing material, 600 kg of machine-made sand, 3 to 5 kg of de-foaming agent, 3 to 5 kg of thickening agent, 0.9 to 1.0 kg of polypropylene staple fiber, a water reducing agent and a retarder; a water-binder ratio is 0.35 to 0.50, wherein the cementing material is prepared from 150 to 400 kg of sulphate aluminium cement and 0 to 250 kg of coal ash; the machine-made sand is 0.075 to 5 mm in grain size; the polypropylene staple fiber is 3 to 6 mm long; 10 min slump degree of the cement-based material is 90 to 110 mm, initial setting time is 15 to 80 min, and final setting time is 30 to 100 min.

The invention relates to an ultraviolet cross-linking copolymer and belongs to the field of macromolecule compounds. The ultraviolet cross-linking copolymer is a modified acrylate copolymer with a main chain formed by repeated structure units and a lateral chain containing ultraviolet light active groups, and is obtained by copolymerization reaction of 0.05 part to 20 parts of ultraviolet light active monomer and 80-99.5 parts of single functionality monomers by weight. The copolymer has the advantages of ultraviolet light polymerization and thermoplastic acrylic copolymer, and conducts remarkable chemical cross-linking reaction under ultraviolet irradiation reaction in the solid state or the coating filming state to quickly form a self-cross-linking network with the largest cross-linking degree to be over 90%. The ultraviolet cross-linking copolymer is still stable in performance if stored for 6 months under room temperature.

The invention discloses a nitrile rubber composite capable of improving mechanical property. With the adoption of the composite, the nitrile rubber composite with better mechanical property can be obtained, and can be used for a blowout preventer rubber seal product. The composite adopts the technical scheme that the composite takes nitrile rubber as a main material. The composite adopts a T-ZnOw tetrapod-like zinc oxide whisker and utilizes high strength and high modulus of a complete structure of the composite to improve a high molecule; a three-dimensional crystal form structure of the composite is dispersed in a matrix, so that a skeleton effect is exerted; a unique three-dimensional space structure allows a gripping force between the composite and the matrix to be greater, so that an improvement effect is more significant, and the tensile strength is improved significantly; and transverse and longitudinal tensile strength values are basically same, so that the mechanical property of a matrix material is improved isotropically, and the strength and the processability of the matrix are improved significantly.

The invention discloses a preparation method of cationic terpenyl epoxy resin polyalcohol water dispersoid and an application thereof. In the method, terpenyl maleic anhydride epoxy resin of glycidyl ester or hydrogenated terpenyl maleic anhydride epoxy resin of glycidyl ester is utilized to react with diethanol amine and micromolecule hydroxy chain extender under the action of catalyst to obtain the polyalcohol product, the polyalcohol product is neutralized with acid and directly disperses in water to obtain self-emulsifying cationic terpenyl epoxy resin polyalcohol water dispersoid. The polyalcohol water dispersoid is a bicomponent aqueous polyurethane system which is combined by hydroxyl component and polyisocyanate and can be widely applied to water paint, binding agent and polymer materials. The preparation method is simple and convenient, the preparation process is clean, the reaction process has no solvent, and stable self-emulsifying water dispersoid can be obtained with no need of stirring at a high speed; the hydroxyl value and the glass transition temperature of the polyalcohol resin can be adjusted along with the type and use level of the micromolecule chain extender; and the prepared bicomponent aqueous polyurethane paint film has excellent ultraviolet resistance and anti-yellowing performances.

The present invention relates to starch sulfate and its preparation and application in concrete. Starch sulfate is prepared through one semi-dry process with chrlorosulfonic acid and starch in the molar ratio of 0.5-1.5 to 1 and organic solvent in 1-2 times volume of chrlorosulfonic acid, and through reaction for 1-4 hr. It has degree of substitution in 0.04-0.12, and molecular weight of (40-55)x10<6>. The starch sulfate is used as water reducing agent for concrete, and the added amount is 0.3-2 wt%. The starch sulfate itself is one kind of surfactant and possesses excellent application as concrete water reducing agent.

The invention relates to a vegetable effervescent tablet beverage for strengthening sports vitality, and is characterized in that: concentration liquid is extracted from mulberry, rhizoma polygonati and lily and so on; seabuckthorn powder, green tea powder, glucose, sodium bicarbonate effervescent agent, caraway juice and so on are prepared by mixing, drying, pelletization and tabletting together with the obtained concentration liquid.

The invention relates to a disposable hemostatic dressing wound leading-in first-aid hemostasis instrument, and belongs to the field of medical apparatuses and instruments. The instrument comprises a hemostatic material loading component and a pushing component. The hemostatic material loading component is used for storing compression-pill-shaped or flake chitosan hemostatic materials, and the front end is packaged through waterproof and breathable silica gel materials; and the pushing component is used for rapidly pressing the hemostatic materials into a wound. The disposable hemostatic dressing wound leading-in first-aid hemostasis instrument is particularly rapid and reliable in hemostatic effect on firearm wounds, penetration wounds and deep pricking wounds which are smaller in body surface penetration wound, large in internal wound and large in bleeding amount in battlefield rescuing. The disposable hemostatic dressing wound leading-in first-aid hemostasis instrument has the advantages that the efficient hemostatic materials are led into the deep wounds; as for tissue deep bleeding parts where bleeding stopping through a tourniquet or pressing is not suitable, the device can achieve the effects of accurate positioning, rapid bleeding stopping and hemorrhagic shock and dead preventing. When traumas accidentally occur, self rescuing or other rescuing can be carried out, and the valuable rescuing time can be won. The device has the advantages of being efficient in bleeding stopping, easy and convenient to operate, low in cost, convenient to carry, long in storage time and convenient to use.

The invention discloses anti-static and flame retardant cotton-polyester fabrics and a processing method thereof. The method comprises the following steps: dyeing the weaved gray fabrics, then padding the dyed gray fabrics in flame retardant liquid, then carrying out ecological finishing and finally carrying out stretching and preshrinking to obtain the finished products. The gray fabrics are fabrics made of organic conductive fibers and weaved in the warp direction or weft direction with equal space. The organic conductive fibers are colorless conductive nylon fibers. The gray fabrics comprise the following components by weight: 9-30% of polyester, 1% of conductive fiber and 69-90% of cotton. The fabrics weigh 180-380g / m2. The flame retardant liquid comprises ethylenephosphonic acid, O,O dimethyl-N-hydroxymethyl acrylamide phosphate, high etherified hexamethylolmelamine resins, polyethylene resins, phosphoric acid, a penetrating agent JFC and deionized water. The products have good anti-static, durable and flame retardant effects and have good color fastness, strength, hand feeling, etc.

The invention discloses a method for separating and purifying a terephthalic acid, comprising the following steps of: (a) filtering a pulp containing crystalline terephthalic acid with a rotary pressure filter; (b) repulping a filter cake obtained in the step (a) into a pulp again; and (c) filtering a pulp obtained from the step (b) with a rotary vacuum filter. The invention also provides a system for carrying out the method, comprising the rotary pressure filter, a repulpator, and the rotary vacuum filter, which are connected sequentially along the flow direction of a material flow.

The invention discloses self-emulsified nonionic terpenyl epoxy resin polyalcohol emulsion and a preparation method and application. The method comprises the following steps of: reacting hydroxyl and an epoxy group under the action of a catalyst by using a terpinene-maleic eater (TME) or a hydrogenated terpinene-maleic eater (HTME), polyethylene glycol (PEG) and a micro-molecule hydroxy chain extender; introducing a hydrophilic chain section polyethylene glycol (PEG) into a product to obtain a polyalcohol pre-polymer; and directly dispersing the polyalcohol pre-polymer with water to obtain the self-emulsified nonionic terpenyl epoxy resin polyalcohol emulsion. The polyalcohol emulsion is a bi-component waterborne polyurethane system consisting of a hydroxy component and polyisocyanate and can be widely applied to waterborne polymer systems such as paint, an adhesive and the like. The emulsion has the advantages of simple and convenient preparation method, clean preparation process, no solvent in a reaction process and high dispersion stability. The hydroxyl value of a polyalcohol resin is adjustable along with the adding amount of the micro-molecule chain extender. A prepared bi-component waterborne polyurethane paint film has high heat resistance and mechanical property.

The invention discloses an adjustable-charge high-pressure resistance device for breakouting pack of dynamite, which comprises a casing body. The casing body is connected with an upper joint and a spring tail. A boosting device is arranged in the upper joint. Unsaturated resin is filled in the casing body, and a certain amount of strip-shaped hollow cavities are distributed on the unsaturated resin and used for loading strip-shaped charges. Priming charges are arranged on the unsaturated resin, and are in tight contact with the strip-shaped charges. A centering sleeve and an elastic press plate are sequentially arranged under the unsaturated resin, wherein the elastic press plate is in contact with the spring tail. Compared with the breakouting pack of dynamite in the traditional artificial detonating cord-winding method, the invention has the advantages of safe and reliable on-site construction, convenient operation, flexible adjustment of charge loading amount, operation at high-pressure environments, and the like, and can be used for the breakouting pack of dynamite when the metal pipe column is blocked in the oil-gas well construction.

The invention provides a plaster automatic forming apparatus belonging to the technical field of traditional Chinese medicine manufacturing equipment. The apparatus chiefly includes a rack, and a plaster cartridge and a control cabinet arranged on the machine frame, a transmission shaft is arranged at the central axis of the plaster cartridge, one or more stirring teeth are arranged on the transmission shaft, a spiral structure is arranged at the end of the transmission shaft, a heating belt is wound around the outer wall of the plaster cartridge, a valve assembly is arranged at the plaster cartridge discharge port, and the transmission shaft is driven by a deceleration motor installed on the machine frame. A Chinese medicine in the form of plaster is prepared from plaster and Chinese-medicinal powder through proportionally mixing, regulating the dosage of plaster, mixing, and mixing.

The invention relates to negative ion functional ink as well as a preparation method and a production method thereof. The preparation method comprises the steps: mixing and stirring a negative ion material, a solvent and a hyperdispersant in a weight ratio of (5-10): (83-92): (0.5-5) in a stirrer to obtain a mixture; sanding the stirred mixture in a sanding machine; filtering the sanded mixture obtained in the previous step so as to remove iron to obtain negative ion functional ink. The negative ion functional ink prepared by adopting the hyperdispersant and the negative ion material has the advantages of good dispersion property and high stability. When the negative ion functional ink is used for preparing a negative ion functional ceramic brick, the addition quantity of the negative ion material can be greatly reduced, and the production cost can be reduced; the negative ion functional ink and a glazed surface are good in compatibility, the defects of the glazed surface such as cracking, pinholes and glaze crawling can be avoided in the production process of the negative ion functional ceramic brick, raw materials can be saved, and the production efficiency is high.

The invention relates to the field of medicinal preparations, in particular to an in-situ formed acyclovir spraying agent and a preparation method thereof. The solution of the spraying agent comprises the following components in percentage by weight: 0.5 to 30 percent of acyclovir and 5 to 50 percent of temperature-sensitive polymer material. The mechanism of the in-situ formed gel is temperature-sensitive type, so the application range can be expanded to external application to skin, internal application to tracts and the like from application to eyes; the application to treatment of symptomis obviously increased; and the spraying agent is particularly applied to dermic administration and local external application to treating herpes simplex or shingles zoster infection and has wide market demand.

The invention discloses a feeding apparatus having a higher reliability for feeding to the panoramic table of a rotary hearth furnace and a feeding system for the rotary hearth furnace. The feeding apparatus comprises a material distributing bin positioned on a frame and provided with an inlet and an outlet, the material passage between the inlet and the outlet is provided with a material feeder which comprises a feeding-in wheel axis and a plurality of feeding-in scratch boards around the feeding-in wheel axis, wherein, the feeding-in wheel axis is connected with a driving device.The feeding system of the rotary hearth furnace comprises a belt conveyer and a panoramic table of the rotary hearth furnace, the feeding apparatus for feeding materials to the panoramic table of the rotary hearth furnace is provided between the belt conveyer and the panoramic table, and the axial lead of the feeding-in wheel axis is vertical with that of the panoramic table of the rotary hearth furnace and is parallel with the rotation axis of the belt conveyer.The invention has characteristics of simple structure, trouble-free service and uniform material-distributing, and is especially adapted to the application of the feeding system of a rotary hearth furnace.

The invention discloses a preparation method of retardation grains used for corrosion resistance, scale prevention and wax resistance of an oil well. In the method, 35 to 50 percent of hydroxy ethylidene disodium diphosphate, 15 to 35 percent of BTA, 15 to 35 percent of ethylene-vinyl acetate multipolymer, 1 to 3 percent of polylactic acid-modified starch, 0.5 to 10 percent of butyl stearate, 1 to 4 percent of foaming agent, 0.5 to 4.5 percent of lubricant and 1 to 3 percent of polylactic acid- polyvinyl alcohol are added into a high mixer, stirred for 3 to 5 minutes for mixing uniformly under the room temperature; materials are added into a double screw extruder by an automatic feeding machine for mixing; the cured materials through mixing enter a single screw extruder, is extruded out and cut into grains; the cut grains are cooled by a fan and are transmitted to a first grade cyclone separating device for cooling-separating; and then the cut grains enter a shaking screen and are screened for obtaining the product. The retardation grains of scale prevention and wax resistance can effectively solve the problems of scale formation and wax deposition of the oil well during the oil filed production. The unqualified products in the production process can be reprocessed, thus having no wastes in the production process.

The invention provides an inflatable lumbar vertebral rehabilitation guiding device. The middle of a bottom plate is provided with a lumbar vertebral heat generating layer, the lumbar vertebral heat generating layer is internally provided with a lumbar vertebral drug-bag placement bag, the two sides of the lumbar vertebral heat generating layer are provided with positioning air bags respectively,the lower portion of the lumbar vertebral heat generating layer is provided with a lumbo-occipital air bag, the upper surface of the lumbo-occipital air bag is provided with a lumbo-occipital heat generating layer, the lumbo-occipital heat generating layer is internally provided with a lumbo-occipital drug-bag placement bag, and the positioning air bags and the lumbo-occipital air bag are inflatedthrough an air pump. Lumbo-occipital flexible bulges can guide shape correction and make people keep natural physiological curve with the help of a magnetic massage cone, the spine gradually restorethe normal physiological position and normal physiological curve, in addition, through physical therapy, the spine and the lumbar vertebral of the body is heated through the heating layers, pores of the skin expand, muscles relax during massage of the airbags, and the purpose that patients with lumbar spondylosis can alleviate pain and are recovered is achieved.

The invention discloses a weak contact sample concentration and purification method and an application. The weak contact sample concentration and purification method comprises the following steps: 1,collecting a sample stock solution with internal free or suspended components, and dripping the sample stock solution onto the surface of a supercooled bottom plate to obtain liquid drops on the surface of the bottom plate; 2, performing the solidification nucleation of liquid drops on a supercooling bottom plate, wherein solidification nucleation occurs on a solid-liquid contact surface, and target components in the liquid drops are gathered at the top areas of the liquid drops due to solidification segregation; 3, controlling the temperature of the supercooling bottom plate, and pausing themovement of a solidification interface; 4, extracting a concentrate at the top of the liquid drop. Compared with the prior art, the weak contact sample concentration and purification method provided by the invention has the advantages of synchronous concentration and purification, no need of chemical solvent extraction, small contact surface between the sample and the container, no pollution, no strong physical field and no relative motion, no damage to the activity of the target component due to low-temperature operation in the whole process, and is especially suitable for small-dose sampleswith biochemical activity.

A process for the production of a reaction product consisting essentially of P4O6 is carried out by reacting oxygen with phosphorus in an exothermic reaction in a reaction unit. Heat created by the exothermic reaction is removed by feeding P4O6 and / or by-products of the process into the reaction unit. The generated reaction product is then quenched to a lower temperature where no essential decomposition of the reaction product occurs, and at least part of P4O6 is separated from the reaction product obtained after quenching. The resulting yield of P4O6 based on the phosphorus used is improved and the heat of the exothermic reaction can be controlled in an economic way.

The invention relates to a preparation method of an AC foaming agent, which comprises the following steps: violently mixing part of biurea slurry and chlorine by using a jet reaction device, instantaneously reacting to generate an AC foaming agent crystal nucleus, adding the crystal nucleus into the residual biurea slurry, and adding an oxidant to oxidize to generate the AC foaming agent. The process has the advantages that the particle size and the particle size distribution range of the AC foaming agent can be controlled, the use stability of the AC foaming agent is improved, and the added value and the market competitiveness of products are improved.

The invention relates to a method for preparing an AC foaming agent. In the method, a jet reaction device is used to vigorously mix part of the biurea slurry and chlorine gas, react instantaneously to generate crystal nuclei of the AC foaming agent, and then add the crystal nuclei to the remaining biurea In the urea slurry, an oxidizing agent is added to oxidize to generate AC foaming agent. The advantage of this process is that it can control the particle size and particle size distribution range of the AC blowing agent, which is conducive to improving the stability of the use of the AC blowing agent, and improving the added value of the product and market competitiveness.

The invention discloses a method for preparing a flame-retardant polymer containing pyridine groups. The method comprises the following steps of (1) adding styrene, acrylonitrile, 2-vinyl pyridine, dibromostyrene and an emulsifier into a dispersant and stirring to obtain an emulsion; (2) adding an initiator and a chain transfer agent into the emulsion and reacting, wherein a reaction mixture is obtained after the reaction is completed; (3) adding a demulsifying agent into the reaction mixture, fully stirring and carrying out solid-liquid separation to obtain a solid product which is a crude product, and (4) sequentially washing the solid product with water and methanol, and after the washing is completed, drying to obtain the finished product. The product prepared by the method has the advantages of good flame-retardant property, good thermodynamic stability and strong surface adhesion force and has a wide range of application.

The invention relates to a production method of a novel copolymerized petroleum resin. Cracking C5 and ethylene tar are used as raw materials for vacuum distillation. Raw material A: raw material B: cresol: styrene: diluent is mixed according to the mass ratio of 10:4: (1~1.5): (1~1.5):2, A gaseous boron trifluoride catalyst is added to the polymerization reaction. In the present invention, cresol and styrene are used as modifiers, and the obtained copolymerized petroleum resin has strong stability, low softening point, and light color, and the amount of cresol and styrene can be adjusted to adjust the molecular weight of the resin more flexibly and effectively, so as to adjust the resin The viscosity performance after glue making can meet the needs of high-end customers.

The invention belongs to the technical field of environmental protection, and particularly relates to a novel adsorbent-modified sepiolite base molecular sieve used for purifying volatile organic waste gas and a preparation method and application thereof. Modified sepiolite serves as the base material of the adsorbent and can be used for purifying industrial organic waste gas. The preparation method of the novel volatile organic compound adsorbent provided by the invention includes the steps that the sepiolite is ground into powder particles and then is acid-activated; and an inorganic binder solution is added to be evenly stirred so that a mixture can be obtained, the mixture is aged to be squeezed to be of a granular or honeycomb structure, and the novel volatile organic compound adsorbent can be prepared by means of solidifying and roasting. The novel volatile organic compound adsorbent prepared through the method is used for purifying the industrial organic waste gas, the method for solving the VOCs pollution problem is provided, and meanwhile the rich sepiolite resources in China can be efficiently utilized.

The invention discloses a feeding apparatus having a higher reliability for feeding to the panoramic table of a rotary hearth furnace and a feeding system for the rotary hearth furnace. The feeding apparatus comprises a material distributing bin positioned on a frame and provided with an inlet and an outlet, the material passage between the inlet and the outlet is provided with a material feeder which comprises a feeding-in wheel axis and a plurality of feeding-in scratch boards around the feeding-in wheel axis, wherein, the feeding-in wheel axis is connected with a driving device.The feedingsystem of the rotary hearth furnace comprises a belt conveyer and a panoramic table of the rotary hearth furnace, the feeding apparatus for feeding materials to the panoramic table of the rotary hearth furnace is provided between the belt conveyer and the panoramic table, and the axial lead of the feeding-in wheel axis is vertical with that of the panoramic table of the rotary hearth furnace and is parallel with the rotation axis of the belt conveyer.The invention has characteristics of simple structure, trouble-free service and uniform material-distributing, and is especially adapted to the application of the feeding system of a rotary hearth furnace.

The invention discloses a preparation method of a nitrogen-doped ferrous sulfide (N-FeS) flower-shaped microsphere material and its electrocatalytic oxygen reduction application. In the method, diethyl dithiocarbamate is used as a sulfur source to react with ferrous chloride in an aqueous solution to obtain the precipitation of a sulfur-containing iron-based precursor. The FeS obtained after the sulfidation reaction has a stable morphology, and the flakes are combined to form flower-like microspheres with uniform sizes. The material can be used as an electrocatalyst to catalyze the oxygen reduction reaction, and has high catalytic activity and stability. This synthesis method provides a great possibility for the synthesis of oxygen-reducing electrocatalytic materials with controllable composition and structure, high specific surface area and good durability. At the same time, the synthesis method is simple and easy, the cost is low, it is suitable for large-scale production, and it shows excellent activity and stability in the electrochemical oxygen reduction reaction, and has a good industrial application prospect.

A multifunctional quantitative discharging utensil comprises a utensil body, a storage cavity, a measuring cavity, an interception mechanism, a positioning cylinder, a side gate mechanism and a sprinkling can mechanism, and is characterized in that the storage cavity is formed in the upper portion of the utensil body; the measuring cavity is formed in the lower front part of the utensil body, the interception mechanism is arranged on the lower rear part of the utensil body, the positioning cylinder is arranged on the lower rear part of the utensil body, a side gate opening is formed in the lower front side of the measuring cavity, and the sprinkling can mechanism is arranged on the front part of the utensil body. The multifunctional quantitative discharging utensil has the advantages that the utensil is simple in structure, small, low in cost, capable of quantitatively taking and pouring materials, fast and especially suitable for food making, cooking and material blending, the putting amount can be adjusted, several materials can be put jointly, visual inspection is not needed, and different materials such as powder, grains, paste, materials capable of being cut with knives and sticky soft materials capable of being cut with knives can be quantitatively taken and poured simultaneously with the single hand.