340results about How to "Solve adhesion" patented technology

The invention relates to a method for finishing bacterium fixation by utilizing polyvinyl alcohol-borate secondary crosslinking, belonging to the field of water treatment. The method comprises the steps of: after mixing polyvinyl alcohol and bacteria in proportion, putting the mixture into saturated borate solution and carrying out first crosslinking fixation, after the fixation, taking out supernate and regulating pH of the supernate, carrying out second crosslinking fixation on the polyvinyl alcohol by utilizing the supernate in which the pH is regulated, and cleaning the polyvinyl alcohol after the fixation, so as to finish the whole fixation process. The method has the advantages that the damage to the bacteria in the fixation process is greatly reduced, and the phenomena of adhesion, water solubility and expansion are effectively reduced as well, thus providing conditions for large-scale industrial application of biologic active fillers and biologic active filter materials based on the polyvinyl alcohol.

The invention relates to an online non-destructive testing method which is suitable for automatically measuring and recording the total grain number, the filled grain number, the maturing rate, the grain lengths, the grain widths and the length-width ratio of a single plant or single-batch paddy rice in the paddy rice seed testing process for agricultural scientific research personnel. The digitalized paddy rice seed testing machine mainly comprises six functional modules of a bar code recognizer, a grain transfer device, an air separation device, an image acquisition device, a PLC (Programmable Logic Controller) and a computer system. The digitalized paddy rice seed testing machine can be used for separating filled grains and empty and shriveled grains by utilizing the air separation device, dynamically acquiring grain parameters by utilizing a machine vision technology and simultaneously measuring the total grain number and the filled grain number of the paddy rice, thereby overcoming a bottleneck that the traditional testing measure can not simultaneously acquire the total grain number and the filled grain number and realizing the detection to the grain-size parameters of the paddy rice at the same time of calculating the paddy rice grain number. The invention can be also widely applied to the seed testing work of other grain crops.

The invention relates to perfume microcapsule dispersed coating solution and a preparation method thereof, and perfumed non-woven fabrics prepared thereby. The perfume microcapsule dispersed coating solution comprises hydrophobic perfume liquid, coagel for coating the perfume liquid, and a dispersion stabilizer, wherein, the coagel comprises hydrophilic albumin glue and anionic hydrophilic colloid. The preparation method of the coating solution comprises the following steps: firstly, emulsifying and dispersing the hydrophobic perfume liquid in hydrophilic albumin glue solution, and then adding anionic hydrophilic colloid solution after full emulsification and dispersion to obtain perfume dispersed solution; secondly, adding acid solution to the perfume dispersed solution, and adjusting the pH value until the dispersed solution is condensed to obtain perfume microcapsules; and finally adding the dispersion stabilizer to the obtained perfume microcapsule solution so that the perfume microcapsules are emulsified and dispersed to obtain the perfume microcapsule dispersed coating solution. The perfumed non-woven fabrics prepared by the perfume microcapsule dispersed coating solution have the advantages of long fragrance retention time, no toxicity and stable fragrance.

The geometric cost-semantic identification cost amalgamated off-line hand-written Chinese character segmentation method belongs to the field of character identification technology. Said method includes the following steps: firstly, analyzing row image of inputted off-line hand-written Chinese character, extracting stroke segment, combining stroke segments into subcharacter block, at the same time giving out subcharacter blocks combined geometric cost, utilizing these geometric costs to generate several possible candidate segmentation methods, evaluating every method by using binary syntactic model of language to obtain semantic-identification cost of every segmentation method, finally integrating geometric and semantic identification costs to obtain optimum segmentation identification scheme.

The invention discloses a background updating method and a vehicle target extracting method in traffic video monitoring. The background updating method comprises the following step of: carrying out background updating judgment based on Canny edge detection. The background updating method solves the problem that the real-time background updating property is poor when traffic jams occur in urban cross roads and people wait a traffic light at a traffic light cross road. The vehicle target extracting method comprises the background updating method disclosed by the invention and a shadow and adhesion eliminating method. The vehicle target extracting method comprises the following step of: extracting a foreground image of a vehicle target on the premise of obtaining an ideal background based onthe background updating method; and then eliminating shadows and adhesions, wherein the shadow and adhesion eliminating method comprises the following steps of: eliminating the shadows by using a cross-correlation function, filling a hole, cutting edges, and sequentially carrying out noise reduction, vertical projection and horizontal projection, and thus the problems of target vehicle adhesion and inaccurate outline caused by the shadows are solved; and extracting an ideal vehicle target.

The invention relates to a non- refrigeration infrared detector array based on monocrystalline silicon PN junction temperature characteristic and a preparation method thereof. The preparation method of the array includes: step A. reducing and oxidizing silicon chip, longitudinally forming a bottom silicon layer, a oxygen-imbedding layer and a top silicon layer, forming a deep trough through bottom silicon etching, filling and flattening to transversely divide infrared detection units; step B. arranging a plurality of monocrystalline silicon PN junctions at the top silicon layer in each infrared detection unit; forming electrical connection wiring in each infrared detection unit, and forming a passivation layer on the monocrystalline silicon PN junction and electrical connecting line; step D. manufacturing a suspending heat insulation cantilever beam in each infrared detection unit, and etching the bottom silicon layer to form the cavity. The invention obtains detection result of infrared radiation by utilizing good temperature characteristic of the monocrystalline silicon PN junction and measuring voltage change of two ends of the monocrystalline silicon PN junction.

The invention relates to a method for preparing fiber prepreg filaments by a hot-melt method and a device thereof. The method provided by the invention comprises the following steps of: 1) placing carbon fiber cone yarns on an unreeling device of a hot-melt prepreg machine according to prepreg production needs; 2) carrying out impregnation on fiber to obtain fiber prepreg; 3) cooling by blowing, entering into a filming device, flattening, spacing, applying and rolling to press and plaster the fiber prepreg at the center of an isolated film to obtain coated fiber prepreg; 4) entering into a reeling device to realize spiral reeling under the control of a reeling controller and a total controller. Therefore, the fiber prepreg filaments are prepared. The invention has the following beneficial effects: the invention is suitable for raw material preparation of fiber reinforced composite products by dry winding or placement moulding production; the reeling length for single fiber prepreg can reach over 3000m, thus reducing the frequency of changing carbon fiber yarns during the production process, raising the production efficiency, decreasing fiber breakage in the product and improving comprehensive performance of the product.

This invention relates to an automatic production line for button LiMn cells including a vacuum drying glove box, a negative shell vibration feed machine and an anode shell vibration feed machine characterizing in installing a conveyer belt, a Li belt cutting device, a Li punch shaping device, a punching and shaping device for isolation films, an injecting device for electrolyte, an anode feed device, a combination device for anode shell and negative shell and a punching and sealing device in the vacuum glove box to increase production rate of button LiMn cells.

The invention provides a segmentation method for recognizing identifying codes, comprising the steps of: acquiring an identifying code image; carrying out clustering processing of the identifying code image to obtain a plurality of cluster images; and screening the plurality of clustering images to obtain target images. The invention further provides a segmentation device for recognizing identifying codes, comprising an acquisition module for acquiring an identifying code image, a clustering module for clustering processing of the identifying code image to obtain a plurality of cluster images, and a screening module for screening the plurality of cluster images to obtain target images. Based on the segmentation method and the segmentation device, the segmentation effect of identifying codes is improved.

The invention relates to a non-refrigerated infrared detector array based on temperature characteristics of a polycrystalline silicon PN junction and a preparation method thereof. The preparation method for the array comprises the following steps: step A, etching, filling and flatting a deep groove in order to divide an infrared detection unit transversely; step B, depositing an embedded oxygen layer and a top silicon layer on the front side of a bottom silicon layer; step C, forming an insulated isolation groove on the front side of the top silicon layer in each infrared detection unit and manufacturing a polycrystalline silicon conducting wire on an insulated cantilever beam; step D, setting a plurality of tandem polycrystalline silicon PN junctions on the top silicon layer in each infrared detection unit; step E, forming a double-layer metal wiring; and step F, manufacturing a suspended insulated cantilever beam in the each infrared detection unit, and etching the bottom silicon layer to form a cavity. The preparation method uses favorable temperature characteristics of the polycrystalline silicon PN junction to obtain detection result of infrared radiation strength through measuring changes of voltage at two ends of the polycrystalline silicon PN junction.

The invention relates to a laser stitch welding compressing device, in particular to a laser stitch welding combined compressing device allowing steel plate laser stitch welding to be completed through fixed compressing devices and a moving compressing device. The fixed compressing devices are disposed on two sides of the moving compressing device. The moving compressing device comprises a moving workbench frame, a moving workbench drive mechanism, a moving workbench, moving carrier wheels, moving compressing wheels, moving compressing wheel drive cylinders, a laser head, and support rollers. A welding head is mounted on a three-dimensional platform of a welding robot. The moving compressing wheels driven and compressed by the moving compressing wheel drive cylinders and moving in sync with the laser head are disposed on two sides of the welding head. The moving workbench frame is arranged below the welding head and is connected with the moving workbench drive mechanism mounted on the moving workbench frame. The moving workbench drive mechanism drives the moving workbench frame to move back and forth along an axis Y. The laser stitch welding combined compressing device has the advantages of wide range of application, simple structure, convenience of mounting, convenience of maintenance and the like.

It's object is to provide a (meth)acrylate compound excellent in photocurability, a curable composition comprising the compound and excellent in all of pattern accuracy, peelability, surface hardness, elasticity recovery and solvent resistance, an optical nanoimprint composition and a cured product of the curable composition and a method for producing it, especially to provide a composition favorable for a permanent film for flat panel displays, etc.A (meth)acrylate compound represented by the following formula (1):wherein R1 represents a hydrogen atom or a methyl group, R2 represents a substituent having carbon atoms of 2 to 6 and having a carbon-carbon double bond, X represents an organic group having carbon atoms of 1 to 10, m and n each are an integer of 1 to 3.

The invention relates to a miniature microphone manufacturing method based on an Si-Si bonding process, which comprises the following steps that: a. a connecting plate and a back plate are provided; b. the back plate and the connecting plate are bonded and fixed; c. the back plate is thinned; d. an insulating bonding layer is grown on the thinned back plate; e. a substrate is provided; f. an insulating supporting layer is grown on the substrate; g. a vibrating diaphragm is precipitated on the substrate; h. the vibrating diaphragm which is arranged in a groove is obtained; i. the back plate and the substrate are bonded and fixed; j. the connecting plate and an oxidization layer above the substrate are etched; k. a lower electrode hole is obtained on the back plate; l. an electrode layer isprecipitated on the back plate; m. electrodes on the back plate and the vibrating diaphragm are obtained; n. a plurality of sound holes on the back plate are obtained; and o. the other end of the substrate which corresponds to the back plate is etched to obtain a vocal cavity below the vibrating diaphragm. The miniature microphone manufacturing method based on the Si-Si bonding process has the advantages of high sensitivity, low cost, wide frequency band, high finished product rate and simple manufacturing process.

The invention discloses an instant freezer and belongs to the technical field of instant freezing equipment. The instant freezer comprises a freezer body, a freezing chamber and an air supply chamber provided with a cold air blowing device are arranged in the freezer body, a conveying belt is arranged in the position corresponding to the cold air blowing device around the air supply chamber, and a power chamber used for installation of a first power device is arranged outside the freezer body. The two ends of the conveying belt extend out of the inlet end and the outlet end of the freezer body, and a normal temperature heating device which is communicated with the power chamber and used for heating the conveying belt is arranged at the inlet end of the freezer body. Heat in the power chamber acts on the conveying belt through the normal temperature heating device, so that the temperature of the body of the conveying belt is raised, the function of the cold air blowing device is utilized in an auxiliary mode, fluidized instant freezing is achieved, the problem of adhering between goods and adhering between the goods and the conveying belt is avoided, the single rate of the goods and normal conveying of the conveying belt are guaranteed, and the production efficiency and the product quality are improved. Meanwhile, the first power device is externally arranged, the refrigerating capacity is fully utilized, the load of the freezer is reduced, and the purpose of energy conservation is achieved.

The invention provides a driver license detection identification method based on an internal feature and a text field layout in a complex scene, which comprises the following steps: firstly, preprocessing an image by using a technique of normalization and SSR enhancement and the like, repairing a frame of a vehicle model frame in the certificate by using morphological operation and line segment repair, obtaining the vehicle model frame contour through the contour detection and filtering, solving the intersection point of the fitting straight line to obtain the vehicle model frame vertex, and combining the standard driving license layout to obtain the driving license area image. Then, analyzing the integral projection information to perform accurate positioning on the position of the vehicle model text area, starting from the position, carrying out coarse positioning and fine positioning on the adjacent non-positioning area at each time to obtain a text area image, and performing tilt correction on the area above the address bar. Finally, combining a plurality of methods to binarize the text area, and identifying characters by using a special character recognition engine. The methodis quick and robust, can quickly and rapidly identify the captured images under various complex scenes, and has better practicability and higher application value.

The invention relates to the field of automobile electronic control, in particular to a battery electric vehicle high-voltage power-on and power-off control method. The battery electric vehicle high-voltage power-on control method mainly includes the steps that 1, a system is self-inspected; 2, a battery high-voltage connection command is sent; 3, whether a main contactor of a battery is closed ornot is detected; 4, a motor power-on command is sent; 5, a motor controller feeds back a high-voltage power-on completion signal; and 6, power-on operation is completed. The battery electric vehiclehigh-voltage power-off control method mainly includes the steps that 1, whether the torque of a motor is 0 or not and whether the rotation speed is lower than 50 rpm or not are detected; 2, an enabling signal of 0 of the motor controller is sent; 3, whether the fed-back enabling state of an IGBT is 0 or not is detected; 4, a motor high-voltage disconnection command is sent; 5, whether a main contactor of the motor controller is disconnected or not is detected; and 6, a battery high-voltage disconnection command is sent. The phenomenon that the battery or the motor controller is damaged due tothe incorrect sequence and insufficient protection measures in the high-voltage power-on and power-off processes can be effectively avoided.

The invention discloses a modified wheel sweeping device composed of a lifting system, a brush system, a clamping rotating system, a turn-over system and a push-out system. When the modified wheel sweeping device is used, an air cylinder II pushes a left sliding plate to enable a wheel to be clamped simultaneously; a servo motor II enables the wheel to rotate; a servo motor I drives a flat brush to rotate; an air cylinder I enables the rotating flat brush and a vertical brush to raise; when touching a wheel flange, the flat brush can remove surplus base powder at the place in spraying; a servo electric cylinder enables the vertical brush to move rightward, and when touching a wheel central hole, the vertical brush can remove surplus base powder at the place in spraying; and after the base power is removed, a servo motor III turns over the clamped wheel by 180 degrees, an air cylinder III enables a plurality of pushing rods to move downward, and when touching protecting plugs in wheel bolt holes, the pushing rods push out the protecting plugs under the effect of springs. When the modified wheel sweeping device is used, the residual base powder at the flange and the central hole of the wheel after spraying can be removed, and the problem that the protecting plugs are adhered to the wheel after spraying can be solved effectively.

The invention discloses a method and a device for carrying out statistics on the number of people on the basis of a video and solves the problem that currently, when the number of people is subjected to statistics, the number of people cannot be accurately subjected to statistics caused by that bonding between people and a person video image cannot be identified. The method comprises the following steps of: identifying a moving foreground which monitors video information and carrying out binarization processing on each video frame, so that after binarization processing, the moving foreground in each video frame is formed by white pixels and a background in each video frame is formed by black pixels; aiming at each white pixel and according to pixel values of other pixels adjacent to the white pixel, determining white pixels positioned on bones of human bodies and pixels positioned in regions where heads of people are positioned; and according to the determined pixels positioned in the regions where the heads of people are positioned, carrying out tracking statistics on the number of people. According to the embodiment of the invention, the white pixels on the bones of the human bodies are determined, so that thinning processing on the human bodies is implemented and the problem of bonding between people can be effectively solved, so that accuracy of statistics on the number of people is improved.

The invention provides an integrated preparation process of big-tow carbon fiber spreading and curing, which comprises the following steps: a carbon fiber precursor is precisely limited to ensure theneutrality of the carbon fiber precursor when the fiber is spread; the carbon fiber precursor is spread after the precise limiting position, and then a coupling agent is added to permeate the carbon fiber precursor before the spreading process of the carbon fiber precursor is completed; a heat curing process is carried out by traction through a heating roller on the carbon fiber precursor after being permeated; a winding process is carried out; preparation devices are provided. The invention adopts an integrated preparation process of spreading--permeating--heat curing of combination of a special-shaped multiple-roller and an angle roller. The carbon fiber becomes obviously wider and thinner and more evenly arranged after the spreading process, which effectively solves the problem of poorpermeability of the big-tow carbon fiber precursor caused by the bad spreading effect. Furthermore, the phenomena of precursor adhesion, yarn breaking, buckling and lamination angle dislocation afterspreading can be overcome during the spreading process of the big-tow carbon fiber precursor.

The invention belongs to the field of thin film coating agents and provides a fluidized coating method for flavoring essence micropills for tobacco. A coating solution comprises the following components and materials in parts by weight: 20-40 parts of framework material, 800-1000 parts of dispersant and 2-3 parts of auxiliaries; and the preparation method comprises the following steps: firstly dissolving the framework material in the dispersant, then adding the auxiliaries, uniformly stirring, milling by a colloid mill for 2-4 times, filtering and then getting the coating solution for later use. According to the fluidized coating method provided by the invention, the drying capacity of a coating can be effectively upgraded, the adhesion problem among particles of the flavoring essence micropills can be overcome, and the working efficiency of a coating process can be further improved.

The present invention relates to a thoracolumbar vertebrae posterior false body which comprises a manual spinous process and a manual vertebral lamina. The manual spinous process is connected with the manual vertebral lamina, and the connection is shape as the connection of the spinous prcess and the vertebral lamina of human body pyramid. Compared with the prior art, the thoracolumbar vertebrae posterior false body can reconstruct the stability of thoracolumbar vertebrae and recover the physical structure and the physical function of thoracolumbar vertebrae posterior column, and can reconstruct the normal anatomical configuration and the function of vertebral canal, and can effectively avoid the possibility of the iatrogenic injury caused by vertebral canal content during operation; the thoracolumbar vertebrae posterior false body integrates spine fusion and non-fusion fixation functions as a whole, the fusion and non-fusion fixation functions are selected and used freely according to the requirement of the operation, and the operation is simple.

The invention relates to a preparation method for instant tremella. The method comprises the steps as follows: steeping tremella in cleaning water, breaking up tremella cells with ultrasonic waves, uniformly spreading, placing on a reticular plate coated with Teflon or a plate with water filtering function, curing with high-temperature steam, and then drying to obtain finished instant tremella. By adoption of the method, the instant tremella retains all the natural elements of tremella and has the advantages of quickness in rehydration, good condition, stability in production, high efficiency, low cost and easiness in automatized mass production.

The invention disclose a functional composite dressing with drug sustained release and self-antimicrobial effects and a preparation method thereof, belongs to the technical field of medical devices, and solves the technical problems that the existing polyurethane foam dressing has low tendency to breed bacteria, cannot be used for a long time, and has low tendency to adhere with granulation. The functional composite dressing is composed of a wound contact layer, a foam absorbing layer and an external protective layer arranged orderly from inside to outside, wherein the wound contact layer is acomposite material of a slow release medicine and degradable polylactic acid, and the surface of the wound contact layer contains permeation micropores; the foam absorbing layer is an aqueous polyurethane foam material, and the foam absorbing layer has an open cell unit. The external protective layer is thermoplastic polyurethane with a dense surface. The dressing has excellent antimicrobial effect, has low tendency to adhere to a wound, is low in frequency of dressing change, increases the comfort of patients while reducing the degree of skin scars, and is especially suitable for the treatment of wounds caused by device trauma, burns, bacterial fester and ulceration and other reasons.

The invention relates to a 135 DEG C irradiation-crosslinked polyolefin heat-shrinkable tube which is composed of the following components in parts by weight: 100 parts of olefin polymer, 5 parts of grafting agent, 30-50 parts of filling flame retardant, 20-50 parts of main flame retardant, 10-25 parts of flame-retardant synergistic agent, 2-5 parts of antioxidant, 2-5 parts of light stabilizer, 2-5 parts of lubricant, 2-5 parts of organic fluorine master batch, 1-5 parts of silicon oil, 3 parts of crosslinking agent and 5 parts of color master batch. The heat-shrinkable tube produced according to the formula above completely satisfies the requirements in UL242 and Grade 135 DEG C in MIL-DTL-23053-5, does not have the adhesion phenomenon in the shrinkage process, and can be widely used in the fields of locomotives, ships, aerospace, nuclear power, war industry and the like.

The invention discloses a dried tofu splitting-cutting and screening device. The dried tofu splitting-cutting and screening device comprises a cutting-splitting device, a sorting device, a conveyor and a controller. The cutting-splitting device comprises a first rack, an electric cylinder, a pressing plate, a rotary workbench, a left mold cutter, a right mold cutter and a servo motor. The sorting device comprises a second rack and a sorting screen which comprises a frame and a step-shaped screen face. According to the dried tofu splitting-cutting and screening device, the left mold cutter and the right mold cutter are arranged on the rotary workbench and located in a material charging position and a splitting-cutting position so that material charging and splitting-cutting can be conducted simultaneously, and the production efficiency is higher. In addition, the screen face of the sorting screen is the step-shaped screen face, so that dried tofu fall vertically when moving along the step-shaped screen face and passing steps. When falling vertically, the mutually adhesive dried tofu is more liable to be scattered and separated so that the dried tofu adhesive problem in the sorting process can be solved very well, and the good screening and sorting quality can be achieved.

The invention relates to the technical field of food processing equipment, in particular to a system for automatically producing vermicelli and glass noodles. For solving the problems of low production efficiency, high rejection rate, serious waste, high failure rate and high energy consumption in the prior art, the technical scheme provided by the invention is that the system for automatically producing the vermicelli and the glass noodles comprises a feeding part, a curing and molding part, a freezing part, a defibering part, a drying part, a sterilizing and disinfecting part and a cutting and packaging part and is characterized in that the the curing assembly also comprises a sleeve; the defibering part also comprises a swing mechanism connected with the other end of a drive roll; the swing mechanism comprises an eccentric power shaft, a resetting component and a connecting component; and the cutting and packaging part also comprises a spring assembly. Compared with the prior art, the system for automatically producing the vermicelli and the glass noodles has the advantages of automation operation, high efficiency, low energy consumption, high efficiency, convenient operation, good safety, low failure rate of the equipment, high rate of finished products and wide applicability.

The invention provides a vehicle detecting method based on a video. The method comprises a daytime detecting mode and a night detecting mode. In the daytime, a method of combination of motion detection and licence plate detection is adopted, in the night, a method of combination of vehicle lamp detection and the licence plate detection is adopted, namely, the licence plate detection result serves as the primary decision criterion of a vehicle, and if no licence plate is detected, in the daytime, the vehicle detected through the motion detection serves as a supplement, and in the night, detected vehicle lamps serve as a supplement, wherein the licence plate detection is carried out based on moving objects, and the detecting range is narrowed. The vehicle detecting method based on the video is high in detecting precision and adaptability, and hardware resources can be saved.

The invention is suitable for the field of the medical image technology, and provides a magnetic resonance image-based bone segmentation method and a system thereof. The method comprises the following steps: calculating step: calculating the Hessian matrix of each pixel and a characteristic value thereof in a first magnetic resonance image; extracting step: extracting the flake structure of the first magnetic resonance image and performing gray level enhancement on the flake structure of the first magnetic resonance image to obtain a second magnetic resonance image; optimization step: performing threshold connected calculation on the second magnetic resonance image, extracting a bone contour of the second magnetic resonance image, and carrying out smooth optimization to obtain a bone contour segmentation result of the second magnetic resonance image. Therefore by applying the magnetic resonance image-based bone segmentation method and the system thereof, a bone needing to be segmented is completely and independently segmented from the magnetic resonance image.

The invention discloses a preparation method of a high temperature-resistant and high salt-resistant type polymer gelatinizing agent for profile control and water shutoff. The preparation method is characterized in that a plurality of temperature-resistant, salt-resistant and hydrolysis-resistant functional monomers are introduced into the synthesizing process of the polymer, a proper amount of modifying additive is added, and a molecular main chain is designed to properly adjust the molar percentage of functional monomer and amide group, so that the synthesized polymer has higher gelatinizing strength and better heat stability through crosslinking under the extreme oil reservoir conditions of temperature higher than or equal to 110 DEG C and mineralizing degree more than or equal to 100000ppm; the enough crosslinking time is guaranteed, and the effective shutoff effect is realized under the strict oil reservoir condition; in the granulating process, a small amount of stabilizer is introduced, and the dissolvability and heat stability of the polymer are further improved; the viscosity average molecular weigh of the polymer is low and is less than 10000000ppm, the dissolvability is better, and the gelatinizing type profile control and water shutoff agent crosslinked with the organic crosslinking agent has strong high temperature-resistant and high salt-resistant ability, free and controllable gelatinizing time, high gelatinizing strength and better heat stability.