47results about How to "Has practical promotion value" patented technology

The invention discloses a preparation method of a medical polyurethane adhesive with controllable curing duration, which comprises the following steps: 1) feeding diisocyanate and polyethylene glycol according to a molar ratio of 2: 1 for reaction to obtain an isocyanate-terminated precursor; 2) adding a certain amount of a hydroxyl-terminated chain extender into the precursor obtained in the step 1) according to an R value (the number of-NCO functional groups in the system: the number of -OH functional groups in the system) = 1.1-1.9; and 3) removing the solvent in the product obtained in the step 2) by using a rotary evaporator to finally obtain the isocyanate-terminated medical polyurethane adhesive, and storing the isocyanate-terminated medical polyurethane adhesive in a dry environment for later use. The prepared medical polyurethane adhesive is controllable in curing time, adjustable in modulus, good in biocompatibility, high in adhesion performance and suitable for repairing of different human body soft tissues and hard tissues.

The invention relates to a detection method of surface strain and displacement of a marine anticorrosive coating. The detection method comprises the following steps that speckle particles are marked on the surface of a specimen to be detected, and the specimen is placed in a seawater corrosion device; two industrial imaging devices are placed in the normal plane of a component; the corrosion device is started, and the industrial imaging devices are started to collect digital speckle images on the coating surface; the collected digital images are used as input data for correlation matching calculation, and quantitative deformation data of the coating images in two cameras under the action of seawater corrosion are obtained; and a demarcating plate is placed in the device to demarcate an imaging system, and the three-dimensional shape and accurate deformation information of coating surface deformation are obtained based on the deformation data in the two cameras. According to the detection method of the surface strain and displacement of the marine anticorrosive coating, accuracy is high, and the cost is saved; and the deformation information, caused by corrosion of the anticorrosivecoating under a marine environment caused can be obtained through the method, and the accurate and reliable data are provided for a study on mechanical properties of the marine anticorrosive coating.

In the method, following instruments and parameters are adopted: 'Daojin' LC-3A high performance liquid chromatograph, UVD-2 ultraviolet detector, wavelength 254nm, GPC-801 chromatographic column with inner diameter 8.0mm and length 300mm, tetrahydrofuran mobile phase, velocity of flow 0.8-0.9ml / min, column temperature 15-22 deg.C. Analysis is carried out for solution of 100 ml. in density 0.001-0.070 prepared from sample of esters compound of terephthalic acid. The invention solves qualitative analysis and quantitative analysis for dimethyl terephthalate, its esters compound, intermediate product and dimer product, possessing features of convenient operation, easy of repetition.

The invention discloses a preparation device and a preparation method for a one-dimension photonic crystal band-stop filter. The preparation device comprises a laser light source, a light beam expansion unit, a first reflection mirror and a second reflection mirror, wherein the included angle between the first reflection mirror and the horizontal plane is 44 to 46 DEG C, a red-sensitive photopolymer holographic plate to be treated is placed on the second reflection mirror, incidence light emitted out by the laser light source forms parallel beam expansion light after passing through the light beam expansion unit, the beam expansion light is directly emitted onto the holographic plate through being reflected by the first reflection mirror, the transmitted beam expansion beam is vertically emitted onto the second reflection mirror, the parallel reflection light reflected by the second reflection mirror and the directly emitted beam expansion light form two beams of coherence light in opposite directions inside the holographic plate, and the holographic plate is exposed. The preparation device has the advantages that a light path is simple, the cost is low, in addition, only the single beam light is adopted to be vertically emitted onto the ed-sensitive photopolymer holographic plate, and then, the second reflection mirror is utilized, so two beams of coherence light: the upper beam of coherence light and the lower beam of coherence light are formed inside the holographic plate, and the operation is very convenient.

The invention provides a virtual reality (VR) mine fully mechanized mining face remote tour inspection intervention method. The remote tour inspection intervention method comprises the following steps: constructing virtual software by utilizing data which is returned by fully mechanized mining face equipment in real time and geophysical exploration data; driving a virtual fully mechanized mining face by real-time data and representing in a fully mechanized VR tracking and interaction center constructed by various types of virtual reality hardware and software; carrying out virtual operation byutilizing various virtual reality man-machine interaction means and a virtual man-machine interaction interface; capturing positions, postures and actions of an operator through the virtual reality hardware and software; converting the virtual operation into a reality instruction and accessing into a centralized control center to operate reality equipment; guiding equipment of corresponding operation to finish adjustment work, so as to finish remote manual intervention and manual tour inspection tasks; carrying out real representation on real-time operation working conditions of the real fully mechanized mining face so as to carry out monitoring. According to the method provided by the invention, equipment, which is not operated normally, is directly subjected to the remote manual intervention in a safe place far away from a production site, and people can cooperatively and simultaneously do tour inspection work.

The invention discloses a gel filtration chromatography analysis method of hydrophilic polymer used for an untreated positive-image plate. The method includes: subjecting the standard polymer of the hydrophilic polymer to gel filtration chromatography analysis, establishing a standard curve, determining an equation of the standard curve, and subjecting a hydrophilic polymer sample to gel filtration chromatography analysis. The method is easy to operate and prone to repetition, and effectively overcomes quantitative analysis of the hydrophilic polymer and oligomer products.

The invention provides a method for reducing the alkalinity of red mud by utilizing industrial wastes. The method comprises the following steps of (1) mixing filtered ammonia-nitrogen wastewater and the red mud, and then stirring to obtain a red mud slurry, wherein the mass ratio of the ammonia-nitrogen wastewater to the red mud is 2 to 4:1; (2) carrying out sedimentation and solid-liquid separation on the red mud slurry obtained in the step (1) to obtain a filter liquor and a filter residue; and (3) adding crushed phosphogypsum into the filter residue obtained in the step (3), then adding water, and cultivating at the room temperature so as to obtain the low-alkalinity red mud, wherein the mass ratio of the phosphogypsum to the filter residue is 1 to 5:100. The method provided by the invention has the characteristics of simplicity in process and low cost; and the Bayer process red mud can be treated in a large scale, the treated red mud can be recycled, the storage yard plants are reconstructed, and favorable social benefit and economic benefit are produced.

The invention discloses a preparation device and a preparation method for a one-dimension photonic crystal band-stop filter. The preparation device comprises a laser light source, a light beam expansion unit, a first reflection mirror and a second reflection mirror, wherein the included angle between the first reflection mirror and the horizontal plane is 44 to 46 DEG C, a red-sensitive photopolymer holographic plate to be treated is placed on the second reflection mirror, incidence light emitted out by the laser light source forms parallel beam expansion light after passing through the light beam expansion unit, the beam expansion light is directly emitted onto the holographic plate through being reflected by the first reflection mirror, the transmitted beam expansion beam is vertically emitted onto the second reflection mirror, the parallel reflection light reflected by the second reflection mirror and the directly emitted beam expansion light form two beams of coherence light in opposite directions inside the holographic plate, and the holographic plate is exposed. The preparation device has the advantages that a light path is simple, the cost is low, in addition, only the single beam light is adopted to be vertically emitted onto the ed-sensitive photopolymer holographic plate, and then, the second reflection mirror is utilized, so two beams of coherence light: the upper beam of coherence light and the lower beam of coherence light are formed inside the holographic plate, and the operation is very convenient.

The invention discloses a blood cell analysis dye synthesizing method. The blood cell analysis dye synthesizing method comprises the steps of synthesizing 2, 3-dimethyl-benzothiazole methyl sulfate and N, N'-dimethyl formamidine to obtain a first intermediate product; synthesizing 1-octanol and trifluoromethane sulfonic anhydride to obtain a second intermediate product; synthesizing the second intermediate product and 4-methyl-quinolin to obtain a third intermediate product; synthesizing the first intermediate product and the third intermediate product to obtain an end product. Therefore, the blood cell analysis dye synthesizing method is low in toxic and side effects, simple in raw material acquisition and structure, low in damage to synthesizing personnel and cost and short in synthetic route and can synthesize target molecules only through four steps of reaction, thereby being high in yield rate, rapid in synthesizing, excellent in purity, cost-saving, easy to industrialized and applicable to practical popularization.

The invention relates to the field of nonwoven fabric materials for automotive interiors, particularly a sound-absorption sound-insulation needle-punched nonwoven fabric for car trunk carpets and wheel cowl carpets and a preparation method thereof. The nonwoven fabric comprises a surface fabric and a base fabric, wherein the base fabric comprises a first base fabric and a second base fabric; the first base fabric and second base fabric are respectively prepared by mixing 30-40 parts by mass of polyester fibers with the titer of 1.5-8D, 25-35 parts by mass of waste cotton fibers, 15-20 parts by mass of polypropylene fibers and 15-20 parts by mass of low-melting-point fibers; the first base fabric is compounded with the second base fabric by needle punching; and the needle punching density is 300-500 needles / cm<2>. Compared with the prior art, the thin natural fibers are added to increase the surface density of the nonwoven fabric and reduce the porosity in the nonwoven fabric; and needled felt pieces with different densities and thicknesses are subjected to needling compounding and heat bonding to form the multilayer composite material, thereby obstructing the outside noise while absorbing the interior noise and improving the internal environment more effectively.

The invention discloses a method for preparing heavy metal cadmium stabilizer sulfenyl-ferrous composite modified charcoal and sulfenyl-ferrous composite modified charcoal prepared with the method. The method comprises the following steps: (1) preparing charcoal; (2) preparing a sulfenyl modification solution; (3) preparing a sulfenyl charcoal precursor; (4) preparing the sulfenyl-ferrous composite modified charcoal. The sulfenyl-ferrous composite modified charcoal prepared with the method is not only low in price and good in environmental-friendliness, but also simple in preparation process and easy in large-scale production and application; meanwhile, the content of organic matters in soil is remarkably increased, and the soil fertility is improved; relatively good adsorption, complexing and coprecipitation functions on exchangeable cadmium in soil are achieved, and effective cadmium in the soil can be remarkably immobilized.

The invention discloses a variable-rate feathering shutdown control method for a wind turbine generator set. According to the method, a Beidou positioning system is mainly utilized to monitor the posture of the generator set in real time, the displacement of the engine room movement is acquired in real time, the state of the load borne by the generator set is estimated according to the displacement condition of an engine room, and then the impact load of a tower can be effectively reduced during the shutdown of the generator set through variable-rate feathering shutdown control strategies under different displacements according to the analyzed load condition, so that the generator set is enabled to carry out more stably feathering shutdown, the service life of the generator set is prolonged, and the variable-rate feathering shutdown control method has practical popularization value and is worthy of popularization.

The invention discloses a steel bar detection method based on a deep convolutional neural network, comprising steps: 1) data acquisition; 2) data processing; 3) model construction and training; 4) model evaluation; 5) model deployment. The present invention applies a target detection algorithm based on a deep convolutional neural network to steel bar detection and counting, and proposes a multi-scale and deformation-tolerant steel bar detection network framework. The framework integrates cascaded R-CNN with better detection performance, feature pyramid network that can effectively solve multi-scale detection problems, more stable group normalization, and deformable convolution that can improve the network's ability to learn spatial geometric deformation, etc. module. Compared with traditional steel bar detection methods, the network framework has higher detection accuracy and better generalization, and can be deployed on remote servers or mobile devices.

The invention discloses an energy storage power generation system of a wind power generator set and an energy dispatching method of the energy storage power generation system. The energy storage powergeneration system comprises an energy storage unit, a battery management unit, an energy storage bidirectional converter, a boost transformer and an energy management unit, wherein the energy storageunit is used for storing or releasing electric energy, the battery management unit is used for detecting and protecting a battery module in the energy storage unit, the energy storage bidirectional converter is used for converting an alternating current of a power grid to a direct current so as to charge a battery or converting the direct current discharged from the battery to the alternating current sent back to the power grid, the boost transformer is used for connecting the energy storage bidirectional converter and the power grid and rising an output voltage of the energy storage bidirectional converter to a power grid voltage, and the energy management unit is used for sending a control signal to the energy storage bidirectional converter and a master controller of the wind power generator set to do real-time control according to real-time data of the master controller of the wind power generator set, the energy storage unit, the energy storage bidirectional converter and a powergrid dispatching instruction and wind power forecast information of a power forecast system. By the energy storage power generation system, the optimal charge-discharge rate of the energy storage system can be made, the utilization efficiency of the energy storage system is improved, and moreover, the energy storage system is high in control efficiency and rapid in response speed.