49results about How to "Great social significance" patented technology

The invention discloses a purity method for heavy metal in the bivalve shellfish. The purity method is: culturing the bivalve shellfish temporarily in the sand leach natural sea water that is 22 to 28 Deg.C of the water temperature, 12 to 32 per micrometer salinity, and continuous charge, releasing microalgae into the sand leach natural sea several times for purity treatment for 2 to 31 days. Purifying bivalve shellfish with the present invention, the heavy metal can be discharged 40 to 50 percents, which meets the edible hygienic standards.

The invention discloses recycled wet-mixed mortar and a preparation method thereof. The recycled wet-mixed mortar is prepared from the components in parts by weight as follows: 180-260 parts of cement, 130-240 parts of limestone flour slurry with the moisture content being 30%-60%, 380-650 parts of recycled fine aggregate, 650-900 parts of natural medium sand, 2.7-3.9 parts of a water-retention thickener, 0-3.0 parts of a setting time regulator and 120-210 parts of water. The recycled fine aggregate produced with waste concrete test cubes through crushing is applied to wet-mixed mortar, a technical method of pre-stirring of the recycled fine aggregate and stone powder slurry as well as utilization of a special additive is used, the problems of high water absorptivity of the recycled fine aggregate, and quick workability loss, reduced strength and the like are solved; not only is the problem of treatment of waste concrete test cubes solved, but also higher economic benefit is produced.

The invention relates to a synthetic method of a continuously copolymerized semi-aromatic nylon, and belongs to the field of material technology. Compared with existing technology, water is taken as a solvent, a synthetic technology of semi-aromatic nylon is improved and optimized, and the synthetic method with operability is provided. Reaction temperature is increased greatly, the highest reaction temperature is increased to about 300 DEG C, so that full drying of high-temperature nylon melt is realized before extrusion pelleting, residual small molecules are removed, and ''material overflow'' occurred when the melt is delivered into an extruder is avoided. Cost is reduced; organic substance discharge amount is reduced; and the synthetic method is green, and possesses significant economic values and social values.

The invention discloses modified activated coke, and a preparation method and application thereof. The modified activated coke provided by the invention is the activated coke loaded with a modifier, and the modifier is at least one of bromide salt, bromate, iodate, chloride salt, and chlorate. The modified activated coke has strong capacity of adsorbing mercury, and has the demercuration efficiency in flue gas more than 95 percent. The invention utilizes the prior coal resources at home to prepare the modified activated coke with high performance, low cost and simple process, and achieves ideal effect when used for the demercuration in the flue gas. The invention contributes to solving the problems that the prior active carbon has high manufacturing cost and the prior activated coke has low demercuration efficiency, and has great economic value and social significance.

The invention relates to high-concentration crumb rubber modified asphalt and a preparation method thereof, and belongs to the field of modified asphalt for road construction. Aiming at the problems that the dosage of crumb rubber is not high enough in the traditional crumb rubber modified asphalt technology, and secondary pollution and high energy consumption exist in the wet method modification, the invention adopts a crumb rubber pretreatment method to prepare modified crumb rubber, and then the modified crumb rubber and a reinforcing agent are mixed with asphalt to prepare the high-concentration crumb rubber modified asphalt with a high-speed shearing method, and the filler content of the modified crumb rubber can reach more than 50 parts. The crumb rubber modified asphalt is simple in preparation technology, high in the dosage of the crumb rubber, superior in performance and high in cost performance, and has significant social meaning and environmental protection value.

The invention discloses a remote control device and a remote control method for a computer power supply plugboard. A turn-on key and a turn-off key of a power supply of the computer power supply plugboard are arranged on a mouse, the on-off of the power supply of the power supply plugboard is controlled in a wireless remote control mode, and the turn-on key of the power supply is a panel turn-on key with turn-on function when a computer is in power off, standby and dormancy. When the computer is in the power off, the standby and the dormancy, all sockets on the power supply plugboard are powered down in the set time. The remote control device and the remote control method have the remarkable characteristics that the turn-on key and the turn-off key of the power supply and the mouse are integrated together, a power supply of a host computer is turned on by using the turn-on key of the power supply on the mouse and synchronously the computer is started, and the power supply of the host computer is turned off by using the turn-off key of the power supply on the mouse so as to radically solve the problem that the power supply of the host computer is turned off by pressing a switch on a power supply socket and simultaneously solve the problem that the on-off of the power supply of peripheral devices used in clearance is controlled by the turn-on key of the power supply and the turn-off key of the power supply on the mouse when the computer is fully started; and the energy is saved, and the usage is convenient.

The invention discloses an engineering vehicle overspeed stop device and a control method thereof. The device consists of a controller, an electronic clock, an oil supply solenoid valve, a buzzer warning circuit and a wheel speed sensor. The method comprises the following steps: detecting the electronic clock by using an electronic system to judge an engineering vehicle runs in the day or in the night, setting different highest speed limit values and common speed limit values, and periodically detecting a speed signal output by the wheel speed sensor currently in a periodical interruption mode; and converting the speed signal into the current speed signal, comparing whether the speed signal is greater than the preset highest speed limit value, setting the frequency of exceeding the common speed limits, and deciding whether a buzzer gives an alarm and the oil supply solenoid valve is opened. The engineering vehicle overspeed stop device is simple in circuit structure, good in real-time property, accurate in measurement and lower in cost, the safety of engineering vehicles can be improved, and the safety of human life and property is guaranteed.

The present invention discloses a probiotic composition for enhancing immunity and an application of the probiotic composition. The probiotic composition comprises prebiotics, a K-MYL probiotic combination and functional substances, and the K-MYL probiotic combination comprises at least one of lactobacillus casei, lactobacillus bulgaricus, saccharomyces boulardii, lactobacillus reuteri and bifidobacterium animalis, or further comprises at least one of lactobacillus rhamnosus, lactobacillus acidophilus and bifidobacterium longum. The probiotic composition can significantly increase the number of intestinal effective microbial communities, improve intestinal immune functions, improve expressions of intestinal immune factors, resist virus infection and shorten recovery time after the virus infection. Moreover, probiotic strain combinations, the prebiotics, probiotic strains and the functional substances have remarkable synergistic enhancement effects.

The invention provides a polylactic acid (PLA)/ poly(butylene succinate-butylene adipate) (PBSA) blown film and a preparation method thereof. The blown film comprises a mixture of PLA, PBSA, plasticizer diethylene glycol monobutyl ether adipate, a lubricant, a plastic lubricant and an antioxidant. The PLA, the PBSA, the lubricant, the plastic lubricant and the antioxidant are first mechanically mixed into a premix, the premix is added through a feeding port of a twin-screw extruder, meanwhile the plasticizer diethylene glycol monobutyl ether adipate is metered and added in through a liquid feeding port of the twin-screw extruder, modified polylactic acid blown film special resin is prepared by melt-extruding, water-cooling, pelletizing and drying, the modified polylactic acid blown film special resin is blown by a film blowing machine to form a transparent tear-resistant biodegradable film. The PBSA, the plasticizers, the lubricant, the plastic lubricant and the antioxidant can effectively increase the tensile elongation at break and tear strength of polylactic acid films, maintains the transparency of the polylactic acid, and solves the brittleness defects of the polylactic acid films. The polylactic acid (PLA)/ poly(butylene succinate-butylene adipate) (PBSA) blown film has good mechanical properties and excellent transparency, and can replace PE, PP, PVC and the like for preparation of films and sheets.

The invention belongs to the technical field of online monitoring of transformers, and in particular relates to a device and method for online monitoring dissolved gas in transformer oil based on a spectrum technology. An oil sample acquisition unit is connected with an oil-gas separation unit; the oil-gas separation unit is connected with a gas detection unit based on the spectrum technology; thegas detection unit based on the spectrum technology is connected with a data acquisition unit; the data acquisition unit is connected with a control and processing unit; and the control and processing unit is separately connected with the oil sample acquisition unit, the oil-gas separation unit, the gas detection unit based on the spectrum technology, a storage unit, a communication unit and a human-computer interaction unit. The device in the invention is good in stability, high in reliability and free from carrier gas, consumable and maintenance, and is not influenced by noise and mechanical vibration; the field installation workload is low; installation and disassembly are easy; the application prospect of the device is wide; and, once being implemented, the device has greater economicbenefit and social meaning.

The invention relates to a Bluetooth-based traffic flow detection device and an implementation method. The device comprises a scheduling center and n base stations, a traffic region needing to be detected is partitioned into n sub-regions, one base station is arranged in each sub-region, and electronic station boards are arranged on bus stops in the sub-regions. The method comprises the following steps: communicating with a vehicle-mounted Bluetooth unit in a Bluetooth wireless way; acquiring traffic flow information; periodically uploading traffic flow information to the base stations; periodically uploading to the scheduling center through the base stations. By adopting the device and the method, a user can know the traffic flow situation of each road segment conveniently whenever and wherever possible, and urban vehicle traffic running states are provided for travelers and drivers. Moreover, a Bluetooth technology plays an important role in a system. By adopting the Bluetooth technology, real-time data acquisition, high-speed information exchange and flexible networking in the system are realized, and the device is easier and more convenient to implement.

The invention discloses a human immunoglobulin-like receptor mutant and application thereof. The human immunoglobulin-like receptor mutant provided by the invention is obtained by introducing a disulfide bond into a human immunoglobulin-like receptor. The invention also provides a method for improving the stability of the human immunoglobulin-like receptor, which is to introduce the disulfide bond into the human immunoglobulin-like receptor. The human immunoglobulin-like receptor mutant of the invention can be used in the structural analysis of the human immunoglobulin-like receptor and can also be used in researches on organ transplanting and tumor transfer and the screening of medicinal targets. The mutant and the application thereof have a high economic value and a great social significance.

The invention discloses a distant hybridization breeding method among three categories of shoal spartina alterniflora loisel, maize and rice. The method comprises the following steps: carrying out hybridization by using maize as a male parent and using rice as a female parent to obtain a first hybridized generation of the maize and the rice; carrying out hybridization by using shoal spartina alterniflora loisel as a male parent and using the first hybridized generation of the maize and the rice as a female parent to obtain a distant hybridized seed among the three categories of the shoal spartina alterniflora loisel, the maize and the rice; and carrying out pedigree selective breeding on the distant hybridized seed among the three categories of the shoal spartina alterniflora loisel, the maize and the rice so as to select and breed out a salt resistant and high-yield seed. The invention selects and breeds a new variety suitable for growing on shoals by excavating and creating the high-quality high-yield economic property of the maize and the rice and germplasm resources of salt resistant genes of the spartina alterniflora loisel, and the new variety can be used as a grain and a feed. The invention has huge economic value and social meaning to develop and utilize wide shoals of China.

The invention discloses a fodder premix and a special bacterial strain thereof; lactobacillus delbrueckii subspecies ST007 with the collection number of CGMCC No.2433 is provided by the invention; inthe fodder premix, active constituents are culture which is obtained by fermenting a substrate with bacillus subtilis Bs006 CGMCC No.2434 and lactobacillus delbrueckii subspecies ST007 CGMCC No.2433;the substrate is at least one of bean pulp, horsebean pulp, rape seed dregs, bean flour and cornmeal. The fodder premix has the characteristics of no toxicity, no drug resistance and no side effect, and can be added in various animal fodders, so as to remarkably promote the growth of animals, improve the fodder conversion ratio and enhance the immunity of the animals. The preparation method of thefodder premix is simple and has low cost, thereby having great economic value and social significance.

The invention discloses a posture-based examination cheating detection method, which comprises the following steps of: image preprocessing: unifying the image size, performing illumination compensation on an image, and increasing the contrast of the image; extracting posture features of people in the examination room video; obtaining coordinates of key points of people in the image through a deepneural network and completing splicing of human body postures; generating an examinee posture sequence: determining the position of the examinee by adopting a voting-based method, and then generatingthe posture sequence of the examinee in time by taking the Euclidean distance between the centroid of the examinee detected in the image and the position of the examinee as a judgment criterion; identifying suspicious behaviors of examinees; and cheating examinee determination and cheating fragment interception. The posture-based examination cheating detection method can accurately and quickly screen out fragments with cheating suspicion in massive examination monitoring videos, and achieves the purposes of saving manpower expenditure, improving the working efficiency and reducing the video playback cost.

The invention relates to a method for utilizing a fingerprint as a traffic ticket. The method comprises the following steps that: a ticket purchaser fills in a ticket purchasing sheet; ticket-selling staff collects a fingerprint of the ticket purchaser, and stores the ticket purchasing sheet and the fingerprint of the ticket purchaser in a ticket database; a ticket processing system compares the stored information with the prior data information and judges whether the ticket purchaser is a repetitive ticket purchaser or a person with low credit standing or not; the ticket is sent to a non-repetitive ticket purchaser with high credit standing; the train number, the seat number, the departure location, the departure time and the arrival location are bond with the fingerprint of the ticket purchaser; when passengers enter a station, the passengers press the fingerprints, and according to the fingerprints, whether the passenger can enter the station or not is checked; when the passengers leave the station, the passengers press the fingerprints, and according to the fingerprints, whether the passenger can leave the station or not is checked; when one passenger traffic work is finished, the ticket processing system automatically carries out the check of passenger departure and arrival; if no passenger departure information is in the ticket database, the passenger is considered as ticket evasion; and corresponding credit standing value of the fingerprint of passenger in the ticket database is reduced.

The invention relates to a structural tomography process based on a chart control, which can be conveniently used for concrete tomography under a visual development environment, thereby solving the problems that the existing structural tomography is expensive in price, inconvenient to use, bad in imaging effect and is not high in quality. The method is as follows: using a microcomputer and an inverse distance weighted interpolation algorithm to conduct preprocessing on data, namely performing interpolation encryption preprocessing for the inversion data, and then setting up the chart control; placing two chart controls on a development environment window to obtain a window control, using the chart control and the microcomputer to generate a contour map and a cloud chart, and then loading the data, respectively transmitting the data to a contour line type curve and a cloud chart type curve through a data loading process after the window control is set up and the imaging data interpolation is encrypted, implementing data loading and imaging, and performing a true coordinate labelling and grid line value drawing. According to the method provided by the invention, the operation is simple and easy, the application effect is good, the imaging effect is clear, the positioning is accurate, and the structural tomography requirements can be met effectively.

The invention discloses an energy-saving automatically-warning battery theft-preventing alarm device for an electric vehicle and a control method thereof. An alarm main device of the alarm device except for a permanent magnet is installed in a battery box, and a normally closed dry-reed pipe and a normally opened dry-reed pipe which are connected in parallel and are freely arranged and combined are installed on the inner wall of a box body of the battery box on the contact surface between the battery box and a battery groove; a switch 9 is installed on the box body on the contact surface between the battery box and the battery groove; and the permanent magnet is installed on the inner wall of the battery groove and corresponds to the normally closed dry-reed pipe. The control method is achieved as follows: when the battery box is placed into the battery groove and the alarm sound of a loudspeaker is turned off, a power supply of the alarm main device is cut off, and the energy-saving automatically-warning battery theft-preventing alarm device is in a warning state; when a thief steals the battery box, the power supply of the alarm main device is switched on and sends the alarm sound when the battery box is separated from the battery groove, and the alarm sound can be withdrawn after the alarm main device receives a cipher key of a cipher transmitter. The invention has flexiblecontrol and convenient use.

A process for preparing Chinese patent medicine by biotechnology includes such steps as washing raw materials pulverizing, immersing in lactic acid, radiating by ultraviolet lamp, adding composite enzyme as reaction liquid, fermenting, settling, taking supernatant to obtain liquid medicine, spray drying, and shaping powder, tablet, or capsule. Its advantages are high utilization rate and no generation of wastes.

The invention discloses a two-dimensional protein electrophoresis method, which includes isoelectric focusing electrophoresis in the first direction and SDS polyacrylamide gel vertical electrophoresis in the second direction, respectively improving the hydration conditions and electrophoresis conditions of the focusing electrophoresis, including Use the hydration solution to hydrate the rubber strip to obtain a hydrated rubber strip, and the pH of the hydrated rubber strip is 4-7, wherein each 100mL hydration solution contains the following components: 41-42.5g of urea , 15-16g of thiourea, 2-2.2g of CHAPS, 0.9-1.1g of DTT, 2-2.2g of IPG Buffer, 0.002-0.003g of bromophenol blue, and the solvent of the hydration solution is ddH ₂ O; The voltage and time of isoelectric focusing electrophoresis are set as follows: S1: 50v, 10h; S2: 250v, 3h; S3: 500v, 3h; S4: 1000v, 1h; S5: 8000v, 3h; S6: 8000v, 6‑ 6.5h. When the method is applied to detect the distribution of whole protein in the stable cell of Bacillus amyloliquefaciens, the two-dimensional electrophoresis pattern has high resolution and good repeatability.

The invention discloses a lignocellulose decomposing method and a specific cellulose decomposing fungus strain thereof. The invention provides a cellulose decomposing fungus strain L-A with CCTCC NO. of M208163, and further provides a culture medium that is used for cultivating the cellulose decomposing fungus strain L-A with CCTCC NO. of M208163, as well as applications of the cellulose decomposing fungus strain L-A with CCTCC NO. of M208163 in lignocellulose decomposition. The lignocellulose decomposing method is favorable for solving the current situation that lignocellulose resource cannot reach complete utilization. The lignocellulose that is preliminarily decomposed by the cellulose decomposing fungus strain L-A can be used as fertilizer for improving and reserving soil fertility, as poultry feedstuff for promoting the development of animal husbandry, and as raw materials of marsh gas fermentation and ethanol production for obtaining clean energies. The lignocellulose decomposing method and the specific cellulose decomposing fungus strain transform cheap regenerative plant cellulose resources into environment-friendly products, thus changing waste into valuables and having great economic value and social significance.

The invention discloses a method for preparing butanediamine. With ammonium succinate as a raw material, the butanediamine is obtained through a dehydration reaction and a hydrogenation reaction. Meanwhile, according to the method, a strain capable of tolerating high-concentration ammonium ions and producing succinic acid at a high yield can also be combined, the ammonium succinate is prepared through anaerobic fermentation, a clear aqueous solution of the ammonium succinate is obtained through a simple solid-liquid separation process and a simple decolorization process under an unpurified and unseparated condition, and ethylenediamine is prepared, so that a method for biologically preparing the ethylenediamine is provided. Compared with the prior art, the method provided by the invention has the advantages of simple process and extremely high efficiency and yield. Meanwhile, in the whole process, renewable biomass resources are taken as raw materials, and each process is relatively simple and can be implemented, so that the method has great social significance and great economic value.

The invention discloses Escherichia coli LL016 with a preservation number of CCTCC (China Center For Type Culture Collection) NO:M2012429. The invention also discloses application of the Escherichia coli LL016 to production of butanedioic acid by using a synthetic medium through pure anaerobic fermentation, and an application method of the Escherichia coli LL016. The Escherichia coli grows by using an inorganic nitrogen source and glucose in an anaerobic condition, greatly accumulates butanedioic acid, and has the advantages of higher growth rate, higher acid yield and great social significance and high economic value.

The invention discloses a device for a simultaneous shutdown of all computers in a computer room, and a method for controlling the device. The device provided by the invention comprises a wireless reception shutdown circuit and a wireless remote controller, wherein, the wireless reception shutdown circuit comprises a controller, a power supply detection circuit, a storage chip, a wireless reception module, a learning indicator light, a learning switch, a photocoupler, a digital analog switch, a first contact pin, a second contact pin, a third contact pin and a resistor. The method provided by the invention is characterized in that the wireless code transmission method is adopted for closing all the computers through POWER ON contact pins on main boards of the computers. Compared with the closing of desktop computers by a network, the invention is more flexible, and has the advantages of convenient use, and great use value and social benefit.

The invention discloses a mountainous ground ropeway traffic system which comprises at least one ground pile assembly and a carrying vehicle body. The ground pile assembly comprises a plurality of vertically arranged segmented load telescopic piles arranged in a spaced manner. The segmented load telescopic piles are fixedly connected to a second chain through a first chain. The carrying vehicle body is fixedly provided with a chain conveying channel, the second chain is arranged in the chain conveying channel in a penetrating manner, and an opening is formed in a side part of the chain conveying channel for the first chain to pass. A plurality of damping braking parts arranged on the outer side of the chain conveying channel in a spaced manner. Each damping braking part comprises two rubber wheels oppositely arranged on the upper and lower sides of the chain conveying channel, the rubber wheels are connected to a fixed plate, the fixed plate is hinged and connected to a fixed block ofthe chain conveying channel, the fixed plate is connected to a braking system of the carrying vehicle body, a first through hole is formed in a part, corresponding to the rubber wheel, of the chain conveying channel, the fixed plate is also connected to a clamping block, and a second through hole is formed in a part, corresponding to the clamping block, of the chain conveying channel.

The invention discloses a method for recycling solar energy crystalline silicon cutting waste size and relates to the technical field of resource regeneration. The solar energy crystalline silicon cutting waste size comprises the following main ingredients: 40-50% of polyethylene glycol, 20-25% of silicon powder, 25-35% of silicon carbide and 2.5-3% of iron scraps. The method comprises the following steps: S1, filtering the crystalline silicon cutting waste size, and separating polyethylene glycol; S2, adding strong base into solid content after filtration, and filtering and washing after reaction is complete; S3, adding humic acid into filtrate, regulating pH value, and concentrating, to obtain liquid silicon fertilizer; S4, removing iron scraps out of filter residue; and S5, washing materials after impurities are removed, and drying to obtain high-purity silicon carbide. The method disclosed by the invention has the advantages that the crystalline silicon cutting waste size can be fully utilized, not only is potential threat of industrial solid waste solved, but also polyethylene glycol, silicon powder and silicon carbide are efficiently and economically separated, and the aim of recycling resource is realized.

The invention relates to a method for protecting the safety and stability of a movable museum collection in an earthquake. The method comprises the following steps: a museum collection imitation is subjected to a material characteristic test in a laboratory, so that tensile and compression resistance limit stress, shear resistance limit stress and a dynamic modulus of elasticity and a dynamic modulus of shearing of a material are obtained; after a stress reduction factor K is fetched, the tensile and compression resistance limit stress and the shear resistance limit stress of the imitation are multiplied by the K, and the product serves as allowable dynamic stress of the museum collection; allowable acceleration is calculated according to the D'Alembert's principle; the stability of the museum collection is classified into three stability levels according to the allowable acceleration, the friction factor and the height-width ratio (namely the allowable vibration index)of the museum collection; finally, an exhibition stand is designed and arranged, and the museum collection is placed according to a classification result. The discriminating method is simple and practicable, and the result is accurate; the allowable vibration index provides a scientific basis and a quantitative criterion for control cover the safety guarantee of the museum collection in an earthquake.

The invention discloses a magnetic nanoparticle visual pathogen detection kit for porcine viral diseases. According to the kit, an enrichment probe on the functionalized magnetic particles and a hybridization probe on the functionalized gold nanoparticles are combined with pathogenic nucleic acid in a sample to form a hybridized gold compound, and horseradish peroxidase collected by the functionalized gold nanoparticles in the hybridized compound is combined to detect the pathogenic nucleic acid in the sample; through enzymatic reaction, field visual detection on common pig pathogens is realized; the detection process does not need pathogen nucleic acid extraction, the detection result is specific, accurate and visual, the detection sensitivity can reach the PCR detection level, and the rapid pathogen detection requirement of a basic mechanism and an epidemic site without any laboratory condition can be met; therefore, a technical support is provided for early discovery, early prevention and early treatment of porcine viral infectious diseases, and economic and social significance is huge.

The invention discloses an online monitoring method and system of creatinine content in hemodialysis dialysate. The method comprises the steps of preparing hemodialysis dialysate samples with different creatinine contents in sample cups, performing spectra collection on the hemodialysis dialysate samples by using a Fourier transform near infrared spectrometer, building a near infrared spectroscopy-based quantitative identification model of creatinine content in hemodialysis dialysate, sending the identification model to a central processing unit, performing near infrared spectra collection ondialysate from the outlet of a hemodialysis dialyzer by using an online monitoring probe, sending near infrared spectrum of creatinine content in the collected dialysate from the outlet of the dialyzer to the central processing unit, comparing, by the central processing unit, quantitative identification models of creatinine content in two dialysates, and if the content including a detection liquidexceeds a preset value, sending an alarm instruction to an alarm by the central processing unit. The method effectively reduces man-made errors and system errors, the model has a high accuracy rate,and the working efficiency is improved.

The invention relates to a nano modified urea resin for environment friendly artificial board and a preparation method thereof. The nano modified urea resin is prepared by implanting formaldehyde scaverger into urea resin by in-situ reaction technology, and the nano modified urea resin comprises the following components and contents (weight percent): 95-99.9% of urea resin and 0.1-5% of formaldehyde scaverger. Compared with the prior art, the nano modified urea resin for environment friendly artificial board in the invention has low free formaldehyde content, good glueability, long storage time, can control release of free formaldehyde in urea resin for a long time, overcomes the shortcomings of traditional low formaldehyde content resin such as poor binding property, easy rebound for formaldehyde release, and short storage time, thus substantially improving environment protection performance of urea resin, radically solving standard exceeding problem of free formaldehyde in indoor decoration and having great market value and social significance.