605results about How to "Reduced effect" patented technology

The present invention provides a nano-micellar preparation containing vinca alkaloids antitumor agent for intravenous injection, which cincludes a therapeutically effective amount of vinca alkaloids antitumor agent (vinblastine, vincristine, vindesine and vinorelbine), a phosphatide derivatized with polyethylene glycol, together with pharmaceutically acceptable adjuvants. The preparation is prepared by encapsulating the medicament with a nano-micelle to obtain the nano-micellar preparation containing vinca alkaloids antitumor agent for injection. The vinca alkaloids antitumor agent and the phosphatide derivatized with polyethylene glycol form a nano-micelle with a highly uniform particle size. In the micelle, the hydrophobic core of encapsulated medicament is surrounded by polyethylene glycol molecules to form a hydrophilic protective layer, so that the medicament is prevented from contacting with the enzymes and other protein molecules in blood and being recognized and phagocytozed by reticuloendothelial system in body, and the circulation time in vivo of the micelle is prolonged.

A modified Colorstripe™ copy protection process utilizes a basic anti-copy protection (ACP) signal that causes attenuation of a video signal, wherein, in one embodiment, the process modifies (lowers) the level of a front porch portion and adds an incorrect color signal (color burst) in the region of the sync tip. When an illegal copy is made, a pre-blanked end of line portion causes a TV set to trigger the color burst sample pulse ahead of time and cause the incorrect color signal in the sync tip region to be sampled. Thus, since the sync tip region has incorrect color phase or frequency, the resulting illegal copy will have enhanced color distortions. In other embodiments, other portions of the horizontal blanking interval are lowered in level and incorrect color bursts are added to a portion or portions of the back porch and / or a portion of the front porch.A further embodiment employs lowering a back porch portion above a sync tip level near the beginning of a video line to form a pseudo sync / AGC pulse pair. The various embodiments of the process may include an adaptable process, as well as several alternative ACP signals for use in combination with the process.

The present invention relates to dental machining apparatus (1) for blanks (3) comprising a tool spindle (2) having an axis of rotation (2.8) and mounted in a bearing housing (1.2) disposed on the machine housing side. A force sensor (5) is also provided, which is disposed between the tool spindle (2) and the bearing housing (1.2) for the purpose of detecting the machining force acting on the tool spindle (2), wherein the tool spindle (2) can be supported against the bearing housing (1.2) directly or indirectly via the force sensor (5).

The invention provides a mutually-embedded ecological building block retaining wall and a construction method thereof, and belongs to the field of buildings. The mutually-embedded ecological building block retaining wall is formed by two or more than two layers of mutually embedded ecological building blocks which are arranged transversely side by side and stacked upwards; each of the mutually embedded ecological building blocks has a front surface of the building block and a back surface of the building block which are parallel to each other; a hole is formed in the middle part of the building block; a groove is formed on the top part of the building block; the front surface of the groove and the back surface of the groove are respectively parallel to the front surface of the building block and the back surface of the building block; a bump is arranged on the bottom part of the building block; the groove is matched with the bump in size; and the bump of the building block on the upper layer is embedded into the groove of the building block on the lower layer. The construction method comprises the following steps of: placing a building block on a construction foundation to serve as a first layer; placing a building block on the first layer building block to serve as a second layer, wherein the bump on the bottom part of the second layer building block is completely embedded into the groove of the first layer building block; and repeatedly placing the building blocks to a designed height. Grass-like vegetation and vine-like plants can be grown in openings of the building blocks and gaps among the building blocks, so that a good ecological effect is achieved.

The invention provides an impact ground pressure preventing method of a full seam gateway. The method is that an impact preventing support consisting of energy absorbing steel beams and energy absorbing anchor rod ropes is added on the basis of the general support composed of an iron wire net, a steel belt and an anchor rod, wherein the energy absorbing steel beams are lengthways distributed at intervals along the gateway, comprising two layers of steel plates, and energy absorbing boxes which are fixed at intervals between the two layers of steel plates; gateway surrounded rock in a propping plate and two sides is drilled and grouted, so that the gateway surrounded rock can damp the impact; two bottom corners of the gateway within the advance influence range of a workface are blasted to release pressure. According to the method, the general support, the impact preventing support, the surrounded rock modification and the blasting and pressure release of the bottom corners of the gateway are synchronously carried out to form a point-line-face-body 3D distribution type energy absorbing and impact preventing system; the incident stress wave can be reduced through the support system, and the reflecting stress wave of the gateway surface can be reduced; the modified loose surrounded rock mass can greatly reduce the influence of the impact energy on the support structure; the four measures supplement each other and synergistically interacted, so that the impact ground pressure preventing capacity of the gateway can be greatly improved.

An identification-data memory is connected to a light-source identifying circuit. Data representing a type of characteristic quantity to be used in making an identification and identification points are stored in the identification-data memory with regard to each type of a plurality of light sources. Based upon input image data, a characteristic quantity is read out and identification points decided in accordance with the identification-data memory. The type of light source that was used to acquire an image represented by image data to be processed is discriminated in accordance with the identification points that have been decided. A color temperature that corresponds to the light-source type discriminated is set in a color-temperature setting circuit, and gray pixels having the set color temperature are extracted from the input image. White-balance correction coefficients are decided based upon the gray pixels extracted.

Within the foodstuffs, the pharmaceutical and corresponding industries, it is of the utmost importance that the insides of tanks and the equipment existing herein can be held completely clean without the risk of undesired bacterial growth, cross-contamination etc. Equipment for the cleaning of tanks comprises a submerged pipe with a nozzle head mounted on the bottom, through which nozzles cleaning fluid is sprayed from below and upwards, while at the same time the nozzles are rotated and turned around inside the tank. In order to ensure an effective cleaning of this submerged equipment, according to the invention this equipment is configured so that cleaning fluid is constantly led out over the pipe (7) which extends down into the tank. This leading-out (18, 19, 22) is effected partly via a channel (17) in the bearing bush (15) for the pipe (7) in the housing (4) for the formation of a film of fluid (19) on the pipe (7), and partly via a channel (16) or a separate nozzle (20) in the housing (4) for the formation of a cleaning jet (18, 22) directed towards the pipe (7).

A linearly polarized light separating film comprising a linearly polarized light separating film and a hard coat layer, which is preferably a thickness in the range of from 1 to 6 μm, which is preferably formed with a resin coat layer having conductivity in which metal oxide fine particles are dispersed, on one side thereof, is good in scratch resistance, and in handleability.

The invention relates to a highly ticoagulant cellulose membrane material, wherein an amphichroic ionomer layer is grafted on the surface of a cellulose membrane, and a 'brush'-shaped amphichroic ionomer layer is formed on the surface of the cellulose membrane. The cellulose membrane with good biocompatibility is prepared by grafting of amphichroic ionic molecules on the surface of the material. The neat 'brush'-shaped amphichroic ionomer layer is formed on the surface of cellulose, so that the defects on the surface of the material are overcome, and the action between the material and biomacromolecules is further reduced, thereby nonspecific protein absorption and blood platelet adhesion are reduced to the maximum degree. Therefore, the cellulose membrane material has high nonspecific protein absorption resistance and high ticoagulant performance. The invention discloses a method for manufacturing the highly ticoagulant cellulose membrane material.

There is provided a dental composite restorative material that has an excellent opalescent effect, no paste stickiness, small polymerization shrinkage during curing and is suitable for the restoration of the incisal edge of a tooth. This dental composite restorative material comprises: (A) a polymerizable monomer, (B) a spherical silica-based particle [I] having an average particle diameter in the range of from 0.1 to 0.5 μm and a standard deviation of particle diameter distribution within 1.30, preferably a silica-titanium group oxide-composite oxide particle, (C) an organic-inorganic composite filler prepared by dispersing the above-described silica-based particle [I] in an organic resin matrix, and (D) a polymerization initiator.

The present invention intends to provide a surface-emitting laser light source capable of generating a linearly polarized laser light having a single-lobed beam profile that takes the largest intensity value in its central area. A two-dimensional photonic crystal consisting of a plate member 31 with holes 311 or 312 arranged in a square lattice pattern is provided on one side of an active layer 23. The hole 311 or 312 is designed so that its plane shape on the emission side (plane “B”) is smaller than that on the active layer side (plane “C”). The center of gravity of the shape on plane “B” is displaced from that of the shape on plane “C” in the in-plane direction. This design lowers the degree of the in-plane symmetry of the two-dimensional photonic crystal, so that a linearly polarized laser light having a single lobe is obtained.

A compression technique compresses interaction data. The interaction data can include a matrix of interaction data used in solving an integral equation. For example, such a matrix of interaction data occurs in the moment method for solving problems in electromagnetics. The interaction data describes the interaction between a source and a tester. In one embodiment, directional sources and / or directional testers are described. The directional sources produce a very weak (or negligible) effect except in selected directional regions. The directional testers are relatively insensitive to an incoming effect except in selected directional regions. Depending on their locations and directional properties, relatively many of the directional sources and directional testers interact weakly (or negligibly). The weak interactions can be effectively removed from the interaction matrix, thereby reducing the effective size of the interaction matrix.

The invention provides a disinsection fungi emulsifiable powder, comprising the following components: disinsection fungi spore powder or mycelium 40-60, vegetable oil 5-15, surfactant 5-10, stabilizer 5-10, dispersant 0.1-1; wherein the disinsection fungi is metarrhizium anisopliae, white muscardine fungi, paecilomyces, hirsutella or the mixture; the surfactant is nonionic surfactant, the vegetable oil is one kind or the mixture of many kinds of the oil according to arbitrary ratios selected from the palm oil, corn oil, soybean oil, cotton seed oil and colza oil; the stabilizer is one kind or the mixture of many kinds of the oil according to arbitrary ratios selected from the xanthan gum, carboxymethyl cellulose, gelatin; the dispersant is DW 1003, glucose ester of fatty acid or the mixture thereof. The storage and transportation of the disinsection fungi emulsifiable powder is convenient and the storage period of the fungi spore is effectively prolonged and the long-term storage is convenient and the preparation activity is higher; after application of the disinsection fungi emulsifiable powder, the oil can effectively absorb the ultraviolet ray and reduce the damage of the ultraviolet ray on the fungi spore, effectively increase the field control-effect stability. The process production technique of the disinsection fungi emulsifiable powder is simple and the disinsection fungi emulsifiable powder is easily mixed with the other compatible synergistic pesticide.

The invention relates to a multidirectional collision preventing device of a robot. The multidirectional collision preventing device of the robot is used for preventing collision when a manipulator moves horizontally and vertically. The multidirectional collision preventing device of the robot comprises a horizontal collision preventing unit, a vertical collision preventing unit and a sensing switch. The vertical collision preventing unit and the horizontal collision preventing unit are similar in structure and have the same collision preventing principle. The vertical collision preventing unit is installed above the horizontal collision preventing unit. The horizontal collision preventing unit comprises a left fixing base, a right fixing base and a horizontal guide rod perpendicularly installed between the left fixing base and the right fixing base. A collision preventing block is connected with the middle of the horizontal guide rod in a sleeving mode, and a C-type spring is installed at the position where the collision preventing block and the horizontal guide rod are connected in the sleeving mode. Springs are installed on the two sides of the collision preventing block, a connecting plate is fixed to the lower end of the collision preventing block, and a mechanical clamping jaw and the connecting plate are fixedly installed. When the mechanical clamping jaw horizontally moves and collides, the connecting plate and the collision preventing block bear collision force jointly, and the collision preventing block overcomes resistance of the C-type spring to move on the horizontal guide rod, so that the collision force is weakened suddenly, the sensing switch is triggered in the moving process to shut down the robot, and then the manipulator, a machine tool and the like are protected. After collision is relieved, the collision preventing block resets rapidly and accurately under action of the springs.

The invention discloses a co-delivery nano-carrier of drugs and genes, a preparation method and an application thereof; and particularly relates to a co-delivery nano-carrier TCPL-siRNA-PPX which can carry a chemotherapeutic drug and a genetic drug simultaneously. The drug delivery system is composed of a polymer prodrug carrier TCPL, siRNA and a multifunctional polyanionic polyer PPX through electrostatic adsorption among the components in a self-assembly manner. The co-delivery nano-carrier can achieve targetedly delivery of the drug and the gene to the same tumor cell, release the siRNA at the cytoplasm, silence Bcl-2 protein, promote apotosis and relieve inhibition of the Bcl-2 on lonidamine, and can deliver the chemotherapeutic drug, lonidamine, which is mitochondrion-acted to mitochondria so that the chemotherapeutic drug and the gene can synergistically trigger the apotosis of a mitochondrial pathway and kill tumor cells cooperatively. Through in-vivo and in-vitro activity evaluation, the drug delivery system is proved to be better than drug delivery carriers which deliver single components respectively at the same time, can significantly improve the anti-cancer activity of the drug and the gene and has a definite synergistic treatment effect.

The invention relates to the field of production of tire rubber compounds, in particular to a mine tire tread rubber compound and a preparation method and the application thereof. The liquid-phase dispersion white carbon black latex mixture contained mine tire tread rubber compound is prepared by plasticating and mixing, by weight, 50-200 parts of liquid-phase dispersion white carbon black latex mixture, 0-80 parts of natural rubber, 20-40 parts of carbon black, 2.0-8.0 parts of rubber assistant R50, 1.0-3.0 parts of stearic acid, 0-6.0 parts of zinc oxide, 1.0-2.0 parts of microcrystalline wax, 0.80-1.20 parts of antiagerRD, 1.0-3.0 parts of antiager4020, 1.0-2.0 parts of oil filled sulfur, 1.5-2.0 parts of vulcanization accelerator and 0.10-0.20 part of anti-coking agent. White carbon black is adopted to totally replace or most replace carbon black to lower rolling resistance of tires and improve wet-skid resistance and abrasive resistance to produce energy-saving and environment-friendly tires.

The invention discloses a full-automatic packaging system of autoclaved aerated concrete blocks, and belongs to the field of packaging devices of the concrete blocks. The system is characterized in that one end of a block conveying mechanism (5) is connected with an autoclave, the other end of the block conveying mechanism (5) is a stack outlet output end, a stack unloading mechanism (1) reciprocates and transversely moves between the stack outlet output end and the input end of a blank turning mechanism (2) through a transverse moving sliding mechanism, and vertically ascends and descends on the input end of the blank turning mechanism (2), the output end of the blank turning mechanism (2) is connected with a double-way packaging mechanism (4), and a mechanical arm stacking mechanism (3) is arranged between the output end of the blank turning mechanism (2) and the double-way packaging mechanism (4). In the whole conveying process, trays do not need to be used, a large number of trays are removed, in stacking work, several stacking clamps at the designated positions can be selectively selected for carrying out the clamping action, cavities or through holes are formed in a whole block stack, carrying through a forklift can be directly carried out, the trays do not need, the trays are thoroughly removed, and a large amount of production cost is saved.

A helicopter rotor wing compound motion parallel driving device comprises a parallel mechanism, a rotor wing swinging mechanism and a spring set. The parallel mechanism comprises a machine base, a movable table, a middle SP type passive confinement branch, a UPU type driving branch and two SPS type driving branches, and the parallel mechanism is used for achieving axial movement and three-dimensional rotation around ball pairs in the center of the machine base of a spindle of a rotor wing. The rotor wing swinging mechanism comprises wing sets, the spindle, an engine, a push rod mechanism, a core rod and connecting rods. Each wing set is rotatably connected with the upper end of the spindle. The engine fixed to the movable table drives the spindle and the wing sets to rotate. The push rod mechanism drives the core rod to move along the spindle, and the core rod rotates along with the spindle. The upper end of the core rod drives the wing sets to swing synchronously relative to the upper end of the spindle through the connecting rod set. The spring set is supported between the machine base and the movable table and used for relieving the acting force of the lift force of the rotor wing to all the driving branches. The helicopter rotor wing compound motion parallel driving device has the advantages that the structure is simple and compact, the stress of the ball pairs is good, the main rotor wing swings and rotates flexibly, and control is easy.

The invention discloses an environment-friendly high-strength water-resisting and mildew-resisting adhesive for a plywood and a preparation method of the environment-friendly high-strength water-resisting and mildew-resisting adhesive. The environment-friendly high-strength water-resisting and mildew-resisting adhesive is prepared from the following raw materials including polyvinyl alcohol, cassava starch, dibutyl phthalate, sodium pyrosulfite, tannic acid, jade powder, calcium silicate hydrate, asbestos powder, p-hydroxybenzoic acid hydrazide, diammonium hydrogen phosphate, hydroquinone, sodium diethylhexyl sulfosuccinate, triethyltin chloride, phenyl mercury oleate, borax and the like. The polyvinyl alcohol and the cassava starch are subjected to a cross-linking reaction so that crystallization degrees of the polyvinyl alcohol and the cassava starch are reduced and a new cross-linking structure is formed, and furthermore, the thermal stability of the adhesive is improved; the borax is added and the polyvinyl alcohol and the starch can be subjected to further cross linking, so that the cross-linking degree and the initial viscosity of the adhesive are improved, and furthermore, the water resistance and the bonding force of the adhesive can be improved; the triethyltin chloride, the phenyl mercury oleate, the p-hydroxybenzoic acid hydrazide and the like are added so that the mildew-resisting capability of the plywood can be improved.

A cartridge munition, particularly practice round, includes a cartridge shell (3) and a projectile (2) inserted into it. A propulsion chamber (4) is provided within the cartridge shell that receives a propulsive charge (5) that may be ignited by means of a pyrotechnic igniter (13) and that develops propulsive gases that act on the base (8) of the projectile, driving it out of the cartridge shell. In order to prevent the pyrotechnic igniter from igniting spontaneously, and from igniting the propulsive charge (5) because of the ambient temperature or because of a fire, which would cause the cartridge shell and projectile to be separated and fly apart, it is proposed by the invention to provide exhaust channels (14) between the propulsion chamber and the exterior of the cartridge shell (3) that are filled with a fusible material, particularly a fusible metal (15). The fusible material has a lower melting point than the ignition point of the igniter (13) and of the propulsive charge (5). If the ambient temperature of the cartridge shell rises above the melting point of the fusible material, it melts, releasing the exhaust channels (14), so that, upon delayed ignition of the propulsive charge, it burns without pressure buildup, and the cartridge shell and projectile remain together.

The invention relates to a measure for enhancing electric transmission line tower footing frozen soil foundation stability. The measure is characterized in that gravity type heat pipes are buried on the periphery of a tower footing foundation of an electric transmission line, heat preservation materials are distributed on a horizontal layer on the periphery of a pile end and a pile body at the top of the tower footing foundation, and soil layers densely higher than an earth surface strap gradient are built above the earth surface and surrounding tower legs of the tower footing foundation, wherein strap gradient waterproof films are paved in the soil layers. The gravity type heat pipes and the heat preservation materials are effectively combined so that the practical use quantity of the gravity type heat pipes can be greatly reduced, project investment can be greatly reduced in terms of the project, construction difficulty is reduced, and construction period of project measures is shortened. In addition, in terms of overall efficacy, compared with a hot rod single measure, the measure for enhancing electric transmission line tower footing frozen soil foundation stability manyfold improves and radically changes the overall cooling efficiency of the electric transmission line tower footing frozen soil foundation and maintain long-period stability of the tower footing foundation.

A speaker device has a cabinet, a speaker unit fixed to the cabinet, and powder-like gas adsorption bodies for physically adsorbing gas present in the space in the cabinet. The average particle diameter of the gas adsorption bodies is less than 0.1 mm. The speaker device is capable of reproducing rich bass sound and is small in size, and in the speaker device, the bass range is extended, lowering in a sound pressure level is prevented, and a volume expansion effect is exhibited also in a high frequency range equal to or above 100-200 Hz.

The invention belongs to the technical field of biological medicine, and designs a multifunctional graphene gene vector, a gene transfection reagent based on the gene vector and a preparation method thereof. The multifunctional graphene comprises the following three parts of graphene, cationic polymer, and an active reagent, wherein the active reagent comprises one or more than one of a surfactant, or cell-penetrating peptide, or nuclear localization signal peptide; the cationic polymer and the active reagent are connected to the graphene. According to the invention, through multi-functionalization, the stability, dispersibility, biocompatibility of the gene vector in the gene transfection process are improved; the toxicity is reduced; and a plurality of gene transfection promotion mechanisms are adopted to improve transfection efficiency. Gene transfection experiment results show that high transfection efficiency and low toxicity are realized in a plurality of cell strains. The main purpose of the invention is gene transfection, and is applicable to cytobiological research, gene product production, and gene therapy.

The invention provides a high spectral abnormity detecting method based on dynamic weight deep self-coding and relates to a high spectral abnormity detecting method. The invention aims to settle a problem of low detecting precision caused by partial model pollution by an abnormal model in an existing high spectral abnormity detecting method. The method comprises the steps of 1, obtaining an optimized DBN model; 2, obtaining a coding image and a reconstruction error image; 3, obtaining a local coding image, and performing step 5; 4, obtaining a local reconstruction error set, and performing step 6; 5, obtaining a local distance factor, and performing step 7; 6, obtaining all dynamic weights of the local distance, and performing step 7; and 7, obtaining an abnormity detecting operator value,setting a threshold, and when the abnormity detecting operator value is larger than or equal with the threshold, determining the detected pixel as an abnormal target, and otherwise, determining the tested pixel as a background pixel; taking a next pixel in a detected image as the detected pixel, and performing the steps 3-7 until all pixels in the detected image are determined. The high spectralabnormity detecting method is used for a high spectral abnormity detecting period.

An apparatus and method is related to wireless communication devices with a reduced-noise recording receiver. The recording receiver receives a transmitted signal, converts the received signal to a digital base-band signal and stores the digitized base-band signal in a buffer for subsequent processing. The stored digital signals are subsequently processed to recover the transmitted data signal. The overall signal integrity in the receiver is improved by performing signal processing after reception is complete. The IF processing section of the receiver includes a frequency band translation section. The frequency band translation section translates the frequency band of the IF signal into a non-harmonically related frequency band. Since the IF signal is in an unrelated frequency band, data can be recovered from the-transmission signal with improved signal-to-noise characteristics. At least a portion of the non-essential electronics are disabled during reception to avoid additional interference and sources of noise.

A high velocity cartridge munition comprises a cartridge shell and a projectile inserted into it. A propulsion chamber within the cartridge shell receives a propulsive charge that may be ignited by a pyrotechnic igniter and that develops propulsive gases that act on the base of the projectile, driving it out of the cartridge shell. To prevent the pyrotechnic igniter from igniting spontaneously, and from igniting the propulsive charge due to the ambient temperature or because of a fire, which would cause the cartridge shell and projectile to be separated and fly apart, at least one exhaust channel between the propulsion chamber and the exterior of the cartridge shell is filled with a fusible material. The fusible material has a lower melting point than the ignition point of the igniter and of the propulsive charge. If the ambient temperature of the cartridge shell rises above the melting point of the fusible material, it melts, releasing the exhaust channels, so that, upon delayed ignition of the propulsive charge, it burns without pressure buildup, and the cartridge shell and projectile remain together. At least one non-fusible, rupturable member is positioned between the fusible material and the propulsive charge to provide mechanical support under normal conditions but to facilitate release of gases if the propulsive charge ignites.

The invention provides a pixel unit which comprises a peripheral frame, a main electrode and a branch electrode. The peripheral frame encloses a pixel electrode; the main electrode is connected with the peripheral frame and comprises a horizontal main electrode body and a longitudinal main electrode body which are perpendicular to each other in a crisscross manner and divides the pixel electrode into four regions; one end of the branch electrode is connected with the peripheral frame while the other opposite end is connected with the horizontal main electrode body / longitudinal main electrode body; the horizontal main electrode body is provided with a first through hole, the longitudinal main electrode body is provided with a second through hole, the first through hole is connected with the second through hole and enables the main electrode to be a crisscross ring in shape.

The invention provides a fast reflecting mirror auto-disturbances rejection control system based on fuzzy proportion integration differentiation (PID).The fast reflecting mirror auto-disturbances rejection control system comprises an input module, a conventional PID module, a fuzzy controller, a feed-forward correction module, a fast reflecting mirror system, a grating amesdial and an output module.The control module performs fuzzy processing on system deviation and deviation change rate through set fuzzy control rules and sets three control parameters of a PID controller, and the three control parameters act on a forward path and feed-forward correction links of the fast reflecting mirror control system respectively and are respectively used for controlling interference to the control system caused by motion and compensation disturbing signals of a fast reflecting mirror.Due to the fact that a control method does not rely on a precise mathematic mode of the fast reflecting mirror and does not require types of known disturbing signals, the control method has a wide applied range.

The invention discloses an electrolyte with a polyanion functional group and a preparation method and application thereof, and relates to a nonaqueous secondary battery electrolyte. For example, the preparation method of Li[PF2(PO2F2)2(C2O4)] comprises the following steps: (1) dissolving Li3PO4 into dimethyl carbonate, adding LiPF6, and recycling a settled solution for recrystallization after reaction so as to obtain LiPO2F2; (2) dissolving the LiPO2F2 obtained in the first step into dimethyl ether, then introducing PF5 gas, and recycling a settled solution for recrystallization so as to obtain LiPF4(PO2F2)2; and (3) under an inert atmosphere condition, dissolving the LiPF4(PO2F2)2 obtained in the second step into the dimethyl ether, then adding oxalic acid, and reacting to obtain the product LiPF2(PO2F2)2(C2O4). The electrolyte with the polyanion functional group can be used in the preparation of a nonaqueous electrolyte and a nonaqueous secondary battery.