701results about How to "Convenient source" patented technology

A tablet case with a cover, the tablet case comprising a housing having three upstanding walls, at least one of the three upstanding walls having a flange, the housing being adapted to receive and retain a tablet. The tablet case further comprises a cover having a substantially rectangular foldable planar member and an elongated member which extends from the cover into an indentation on the inside of the housing. A section of the elongated member is secured to the indentation to form a substantially planar surface arranged to abut the rear wall of a tablet. First and second magnetic means are provided on the housing and cover respectively to allow the cover to be folded into a stand and secured to the housing or to allow the cover to simply shield a tablet screen.

The invention relates to a preparation method for aromatic series polybenzimidazole resin film, comprising: (1) under function of polyphosphoric acid/phosphorus pentoxide system, condensation polymerization reaction is carried out to aromatic series amine and aromatic series dicarboxylic acids mixed according to mol ratio of 1:1 in nitrogen atmosphere; (2) after cooling, polymer is poured into water and broken down into powder in a resin pulper and washed over and over again by distilled water and soaked for 48 hours in NaHCO3 solution and washed till pH value shows neutral and drawn and filtered for drying in vacuum; (3) the polymer dried is dissolved in even solution prepared by organic solvent with mass percent of 5 percent, and then is dried at temperature of 130 DEG C for 12 hours, and is soaked in hot water for boiling and striping, and is dried in vacuum at temperature of 100 DEG C for 5 hours and then is obtained. The polybenzimidazole prepared by the invention has the advantages of big molecule weight, stable thermal stability, fine solubility and film forming performance, etc. The preparation has simple technology, low cost, convenient operation and can be finished in common equipments through preparation procedure.

The invention relates to a high-performance conducting resin, comprising the following components: epoxy, latent curing agent, active toughener and conducting particles. The preparation method comprises the following steps: adding the epoxy and the active toughener in a reaction bulb to react, then adding the latent curing agent, uniformly stirring, adding the surface-treated conducting particles, uniformly stirring, and defoaming in vacuum to obtain the high-performance conducting resin. The conducting resin in characterized in that the bonding strength reaches up to 24.1 MPa; the volume resistivity is 4.30*10<-5>-2.12*10<-4> ohm.cm; the Tonset thermal decomposition temperature reaches up to 398.7 DEG C; the water absorption is only 0.2%; and storage life at the room-temperature is as long as more than 3 months. The invention has the advantages of simple preparation process, low cost, convenient operation and convenient reaction material source, can complete the preparation process in universal devices, is beneficial to realizing industrial production, and has wide application prospects in the fields of electronic components, resonators, relays, electronic capacitors and the like.

The invention discloses an organic cultural substrate for flowers and trees and a preparation method thereof. The method has the following steps: carrying out anaerobic fermentation to organic maturity fertilizer, plant growth inhibitor, sustained-release agent, microbial agent and coal slag according to a certain proportion, and reversing chopping the above substances after the temperature to a certain range; fermenting and ripening raw materials for 25 days, and condensing the raw materials in vacuum to obtain organic maturity fertilizer; and mixing all the cultural substrates for flowers and trees according to a certain proportion, and producing cultural substrate for flowers and trees by grain production line and then packed and sold out. The invention overcomes the difficulty of sludge treatment, recycles sludge, makes use of such wastes as straws and avoids environmental pollution caused by incinerating.

The invention discloses a preparation method of a graphene-based composite membrane. The method comprises the following steps: extruding a mixed liquid of graphene or graphene oxide compounds in a preparation device of a linear die orifice by adopting a solution wet spinning process, solidifying in a solidification liquid with a graphene or graphene oxide liquid crystal as a template to form a graphene or graphene oxide-based composite gel membrane with a lamellar structure, and drying to obtain the continuous macroscopical graphene or graphene oxide-based composite membrane. The method is simple and convenient, simple in process and wide in compoundable material range; the obtained graphene-based composite membrane is adjustable in size and is applied in various different industrial fields according to different composite materials.

The invention relates to a composite material of flame-retardant boric acid-zinc oxide modified magnesium hydroxide and ethylene-vinyl acetate and a preparation method thereof. The composite material comprises the following components: 25wt%-33wt% of ethylene-vinyl acetate copolymer granules, 55wt%-65wt% of boric acid-zinc oxide modified magnesium hydroxide powder and 2wt%-12wt% of EVA-D4085 compatilizer. The preparation method comprises the following steps: shearing the magnesium hydroxide powder, an amino-containing silane coupling agent and water at room temperature in high speed, adding boric acid and zinc oxide to the obtained mixture, heating to 60-100 DEG C and reacting with stirring to obtain the boric acid-zinc oxide modified magnesium hydroxide powder; and evenly mixing the modified magnesium hydroxide, the ethylene-vinyl acetate copolymer granules and the EVA-D4085 compatilizer to obtain the needed composite material. The obtained composite material has obvious flame-retardant effect, good mechanical property, simple preparation process and low cost, thus being beneficial to realizing industrial production.

The invention provides an ethylene-propylene-diene rubber composition with high comprehensive performance and a preparation method thereof. The ethylene-propylene-diene rubber composition is characterized by being prepared from 75 to 90 mass parts of ethylene-propylene-diene rubber, 10 to 25 mass parts of chlorosulfonated polyethylene rubber, 1.5 to 3 mass parts of anti-aging agent prepared by product of reaction of a ketone and amine, 1 to 3 mass parts of paraphenylenediamine anti-aging agent, 1.5 to 2.5 mass parts of physical anti-aging agent, 0.5 to 1.0 mass parts of stearic acid, 5 to 8 mass parts of active agent, 30 to 50 mass parts of reinforcing agent, 3 to 8 mass parts of plasticizer, 1.5 to 3 mass parts of vulcanizer and 2 to 4 mass parts of accelerator. The invention also provides the preparation method of the rubber composition, which is to blend in an internal mixer or an open mill. The product has high temperature resistance and high comprehensive performance.

The invention provides a preparation method of a self-supporting ferronickel layered double hydroxide sulfide electrocatalyst. The preparation method comprises the steps of pretreating original foamednickel to obtain purified foamed nickel; dissolving nickel nitrate hexahydrate, iron nitrate nonahydrate and urea into deionized water according to a preset proportion to obtain a mixed solution, wherein the concentration of cations in the mixed solution is 40-45 mmol/L, and the concentration of urea in the mixed solution is 130-150 mmol/L; carrying out primary hydrothermal reaction on the mixedsolution to obtain NiFe LDH/NF; putting the NiFe LDH/NF into a thioacetamide solution, and carrying out a secondary hydrothermal reaction to obtain NiFe LDH-Sx/NF, wherein x is any number from 1 to 8.According to the preparation method of the self-supporting ferronickel layered double hydroxide sulfide electrocatalyst provided by the invention, the electrocatalyst shows excellent oxygen evolutionreaction catalytic activity under an alkaline condition, a ferronickel double hydroxide nanosheet structure directly growing on foamed nickel is beneficial to electron transfer, the catalytic surfacearea is increased, and the catalytic active sites are improved, so that diffusion of oxygen evolution reaction is facilitated.

The invention relates to a method for preparing silicon carbide nanowires, waster containing SiO2 such as silicon ore, quartz, waste fiber, waste quartz, biomass ash waste, and the like, are taken as the raw material, and carbon, charcoal, coal, waste activated carbon, coke and lignite, and the like, are taken as the reducing agent. The raw material and the reducing agent are mixed according to the ratio of 1:0.5 to 6; after vacuum carbothermal reduction at the vacuum control degree of 10<-2> to 10<-4> Pa, the temperature of 700 DEG C to 2000 DEG C, and the reduction reaction time of 10min to 2h, the mixture is naturally cooled to the room temperature, after ignition and washing, filtering and drying, SiC nanowires with the diameter of 30 to 120nm and the length at micron class are prepared.

The invention relates to high-temperature resistant copper foil glue containing the following components: 5-15wt percent of trifluoromethyl-contained maleimide resin, 10-30wt percent of polyfunctional ethoxyline resin, 10-40wt percent of bisphenol A epoxy resin, 5-15wt percent of ethylene-contained polyetherimide, 5-10wt percent of curing agent and 25-45wt percent of organic solvent; the preparation comprises the following steps of: adding the trifluoromethyl-contained maleimide resin and the ethylene-contained polyetherimide to the mixture of the polyfunctional ethoxyline resin and the bisphenol A epoxy resin, stirring while heating for reacting, and then cooling to 30-50 DEG C; adding the organic solvent and the curing agent; evenly stirring to obtain the high-temperature resistant copper foil glue the homogeneous phase of which is transparent and clear. The high-temperature resistant copper foil glue has Tonset temperature reaching up to 415 DEG C and excellent comprehensive performance, can be applied to the high-tech fields of electronics and microelectronics, automobiles, electrical machines, aerospace and the like; moreover, the invention has simple preparation process, low cost, convenient operation and available reaction raw materials, thereby being beneficial to realizing industrial production.

A full automatic atmospheric polarization mode image acquisition system and a system control method are characterized in that the system comprises a polarization imaging module, a mechanical movement module, a brightness acquisition module and a system control and processing center; and the system control and processing center respectively controls the rotation angle of a base and the lift height of a worm in the mechanical movement module through a controller and records and processes the light intensity information acquired by a light intensity detector and the polarization image of sky area acquired by the polarization imaging module in a CCD camera. The invention has simple operation, accurate measurement result which is easy to calibrate, and does not need to mechanically rotate a polaroid sheet in the measurement process.

The invention relates to application of E-ring demethoxy-silibinin for preparing medicaments for treating viral hepatitis B, and particularly to application of compound in formula (1) and pharmaceutically acceptable salt thereof for preparing medicaments for clearing HBsAg and HBeAg and suppressing HBV DNA replication. The invention has extremely superactive activity for suppressing the HBsAg and HBeAg; in the presence of the concentration of 20 microgram per millilitre, the intensities for clearing the HBsAg and HBeAg are 95.0% and 34.4% respectively, which are 5.9 and 2.0 times corresponding activity of a positive control medicament alpha-interferon; and it should be noticed that the suppression ratio of the medicament for HBV DNA at the concentration is about 91.5%, which is 13% higher than lamivudine and 2.4 times alpha-interferon suppression activity. In summary, the flavonolignans or pharmaceutically acceptable salt thereof can be prospectively used for preparing non-nucleoside medicaments for clearing the HBsAg and HBeAg, suppressing HBV DNA replication and treating hepatitis B virus infection disease.

The invention relates to application of dimethyl dehydrated silybin in preparing medicaments for treating virus hepatitis B, in particular to the application of 7 and 20-position methyl substituted dehydrated silybin or pharmaceutically acceptable salts thereof in preparing medicaments for removing HBsAG and HBsAg and medicaments for inhibiting HBV DNA replication. The dehydrated silybin has remarkably HBsAg and HBeAg inhibiting activity, wherein the strength for removing the HBsAg and the HBeAg at the concentration of 20 milligram/milliliter is 88.9 percent and 84.1 percent respectively, which are 5.5 times and 5.0 times that of a positive contrast medicament. More importantly, the dehydrated silybin shows the HBV DNA inhibition ratio of about 99.6 percent at the concentration of 20 milligram/milliliter, the activity exceeds lamivudine by 23 percent, which is 2.6 times that of interferon. Therefore, favonolignan or pharmaceutically acceptable salts thereof can be predictably used for preparing the non-nucleoside reverse transcriptase inhibitor medicaments for removing the HBsAg and HBeAg, inhibiting HBV DNA replication and treating hepatitis B virus infection diseases.

The invention relates to a heat-resistant solvent-free immersion paint which comprises the following components in percentage by weight: 10%-15% of organosilicon polyfunctional epoxy resin, 15%-35% of silicon-free polyfunctional epoxy resin, 5%-10% of curing agent and 45%-65% of reactive diluent. The preparation method thereof comprises the following steps: adding the organosilicon polyfunctional epoxy resin, the reactive diluent and the silicon-free polyfunctional epoxy resin into a kettle, reacting for 0.5h at the temperature of 100 DEG C, cooling, adding the curing agent, and evenly stirring at room temperature, thus obtaining sticky liquid, i.e. the heat-resistant solvent-free immersion paint. The preparation process is simple, the cost is low, and the industrialized production can be easily realized; the room-temperature longitudinal shear strength of the heat-resistant solvent-free immersion paint is high; and the heat-resistant solvent-free immersion paint has excellent heat resistance, strong hydrophobic property and wide application prospects in the fields of high-power traction electric machines, high-power generators, drilling motors, mining motors and the like.

The invention relates to the field of textile finishing agent, in particular to supersoft hydrophilic block silicone oil compound and a preparation method thereof. The supersoft hydrophilic block silicone oil compound is composed of cations of the structural formula, wherein the n1 is the number of 5 to 10, the R is polyether group, and the degree of polymerization ranges from 3 to 50. The supersoft hydrophilic block silicone oil compound is applicable to handle finishing of fabric knitted by one or multiple fibers of cotton, dacron, chinlon and acrylic fibers and has softness, smoothness and looseness effects superior to those of amino-modified silicone oil, has excellent stability in acid and alkali resistance, electrolyte resistance, high temperature resistance, shearing resistance and the like and thoroughly solves the problems of easy demulsification, floating oil, roll banding, difficulty in refinishing and the like.

The invention relates to a preparation method of flurbiprofen axetil. The method comprises the following steps of: preparing 4-bromine-2-fluoroanili from fluoroaniline under the action of 1,3- dibromo-5,5-dimethyl hydantoin; condensing 4-bromine-2-fluoroanili with benzene under the action of a catalyst and sodium nitrite to synthesize 4-bromine-2-fluorobiphenyl; carrying out grignard reaction and acidity reaction on the 4-bromine-2-fluorobiphenyl and 2-bromine sodium propionate under the action of a catalyst to generate 2-(2- fluorine-4-biphenylyl) propionic acid; condensing the 2-(2- fluorine-4-biphenylyl) propionic acid with 1-chloroacetic ethyl acetate to generate a target compound flurbiprofen axetil; and carrying out molecular distillation on the flurbiprofen axetil crude product to obtain a flurbiprofen axetil final product.

The invention discloses agricultural organic fertilizer. The agricultural organic fertilizer consists of the following raw materials in percentage by weight: 30-45 parts of fowl manure, 15-25 parts of cow dung, 12-25 parts of pig manure, 10-13 parts of peat soil, 15-20 parts of straw ash, 8-10 parts of sawdust, 2-4 parts of formic acid, 5-8 parts of animal bone meal, 6-8 parts of egg shell powder, 3-5 parts of gypsum powder, 2-4 parts of calcium hydrogen phosphate and 0.5-0.8 part of an EM inoculant. Furthermore, the invention discloses a preparation method of the agricultural organic fertilizer. The agricultural organic fertilizer, compared with the prior art, has the following advantages that the agricultural organic fertilizer overcomes shortcomings of chemical fertilizer and conventional agricultural fertilizer, and realizes comprehensive treatment of waste to turn waste into wealth; and the agricultural organic fertilizer can protect soil. The organic fertilizer preparation method is simple and easy to operate, relatively short in fermentation time, wide in raw material source, low in cost, and quite remarkable in both social benefit and economic benefit.

The invention relates to a nano dolomite-containing corundum spinel castable and a preparation method thereof. On the basis of a corundum spinel castable which is commonly used at present, nano dolomite powder is added, spinel and calcium hexa-aluminate serving as seed crystals are introduced, and a high-efficiency dispersing agent and an appropriate mixing process are adopted, so that the nano dolomite-containing corundum spinel castable is prepared. The adverse effect of hydration of magnesia on the construction performance of the castable when spinel is generated in situ by adding the magnesia is avoided, and the slag resistance and thermal shock resistance of the corundum spinel castable which is used at present are improved; and the prepared nano dolomite-containing corundum spinel castable can be widely applied to the field of high-temperature industry such as steel industry, nonferrous metal industry, ceramic industry and petrochemical industry, and also can be applied to a fireproof material product formed by casting, forming and sintering a permeable brick and the like.

The invention discloses a precision investment casting casing-making method suitable for a stainless steel casting. The precision investment casting casing-making method comprises blending of an adhesion agent; preparation of surface layer slurry; surface layer stuccoing; preparation of transition layer slurry; transition layer stuccoing; preparation of reinforcing layer slurry; reinforcing layer stuccoing; preparation of obturating layer slurry; and drying of an obturating layer. Kaoline powder cheap in price is adopted mainly and is convenient to purchase, a preparation process and proportioning are simple, the aim of effectively reducing production cost in aluminum alloy precision investment casting is achieved on the premises that quality of a formwork and the surface of the casting is not reduced, quality of the casting is effectively improved, and production efficiency and the finished product rate of the casting are improved.

The method discloses a method for removing sodium oxalate in an industrial sodium aluminate solution, which is in particular suitable for removing impurity sodium oxalate in the sodium aluminate solution in the process of producing alumina in a Bayer process. The method comprises the following steps that: a decomposition mother solution is evaporated, condensed and cooled; aluminium hydroxide is added as an inoculating seed in order that a sodium oxalate crystallinesubstance in the decomposition mother solution is separated out and filtered; and the crystallinesubstance is separated, thereby removing the sodium oxalate in the sodium aluminate solution. Through the treatment by the method, the sodium oxalate concentration in the sodium aluminate solution is reduced; the method reduces the influence of the sodium oxalate on the production process, makes for the smoothness of the production in the Bayer process and has marked effect, simple process and good industrial application prospect.

The invention relates to a construction method of floating floor. The method is characterized by giving detailed description of room floating floor construction and quality control in rooms of high-level acoustic technology requirements, and controlling room acoustic technology requirements of rooms such as a studio, a recording room, a control room, a dubbing studio and a standard viewing room; for the floating floor, elastic damping cushion blocks are arranged on a structural layer, glass fiber is filled in the cushion blocks to absorb shock waves or sound waves, lumber-core boards is arranged on the elastic damping cushion blocks, a waterproof layer is made, steel bars are banded and concrete is poured and firmed by ramming to form a topping, and space between the two layers of structures is made overhead by the elastic damping cushion blocks, thus noise index requirements of transmitting vibration and sound outside the room to the acoustic technology room by the structures are achieved.

The invention provides a tower crane. The tower crane comprises a climbing frame and jacking system (100), wherein the climbing frame and jacking system (100) comprises a climbing frame (110) and a jacking system for jacking the climbing frame (110); the jacking system comprises an upper cross beam (140) connected with the climbing frame (110), a jacking cross beam (130) supported on a standard section (2) and a hydraulic system; the hydraulic system comprises a plurality of jacking oil cylinders (120) supported between the upper cross beam (140) and the jacking cross beam (130); the jacking oil cylinders (120) are arranged on the side face, which is positioned on the balance arm side, of the climbing frame (110) and two side faces, which are adjacent to the first side face, of the climbing frame (110) respectively; and more than two jacking oil cylinders (120) are arranged on at least one of the three side faces. According to the tower crane, an upward rotary self-lifting structure is adopted in a super-huge type tower crane, so that the maximum lifting height of the super-huge type tower crane is increased.

A process for reclaiming the rejected polypropene composition, that is, the leftover of internal decoration for car, includes such steps as pulverizing, proportionally mixing it with polypropene, coupling agent and assistant, heating until the mixture is fused, putting glass fibre cloth in mould, pouring the fused mixture in it, pressing, cooling and demoulding.

The invention discloses an outdoor wood stove capable of generating electricity. The outdoor wood stove comprises a stove body and a temperature difference power generation device fixed to the outer side wall of the stove body, at least one primary air inlet, a secondary air inlet and a tertiary air inlet are formed in the lower portion, the middle and the upper portion of an inner container respectively, an air guiding opening is formed below the primary air inlet, and a heat conduction hole is formed between the secondary air inlet and the tertiary air inlet; the temperature difference power generation device comprises a heat conduction metal rod, at least one temperature different power generation piece, a radiating aluminum plate, an air blower, a storage battery module and a radiating air duct, the radiating air duct is communicated with the air guiding opening, the heat conduction metal rod is fixed in the heat conduction hole, one end of the heat conduction metal rod is attached to the heat collection surface of the temperature different power generation piece, and the radiating surface of the temperature difference power generation piece is attached to the radiating aluminum plate. The outdoor wood stove has the advantages of being simple in structure, convenient to carry, low in cost and capable of forcing air feeding and effectively carrying out power generation and power supply outdoors.

A method and system of optimizing microgrid operations is provided. One or more intelligent microgrid coordinators interface with the microgrid such that those microgrid coordinators are able to measure and control all microgrid asset activities. The microgrid coordinator is used to forecast the microgrid's demanded load more accurately, and assign asset commands so as to optimize microgrid consumption, generation, and storage of load. The method and system incorporate a valuation of dispatchable load in optimization functions. The microgrid coordinator is further used to protect the microgrid assets from over-current situations when the microgrid is connected to the bulk electric system and when islanded. The method and system provide a means to test the microgrid controller prior to implementation on the microgrid in order to assure proper operation.

A method for preparing post finishing nanoreagent of fabric product with persistant aromatic and antibiotic effect includes using high adhesion material as wall material and mixture of aromatics and germicide as core material of microcapsule, forming 25% core material solution by mixing aromatics and germicide with volume ratio as 4:1-2:1 and then diluting it by pure water, forming A solution by mixing oily emulsifier with high adhesion material and toluene solution in volume ratio as 5:12:20, forming B solution by mixing liquid phase curing agent with core solution in volume ratio as 1.5:6 and forming said nanoreagent by mixing A solution with B solution in volume ratio as 1:1.

The invention relates to health care medicinal liquor. A preparation method comprises the following steps of: mixing the following components according to the weight ratio: 5g of ginseng, 8g of hairy antler, 15g of common curculigo rhizome, 20g of Chinese magnoliavine fruit, 18g of barbary wolfberry fruit, 20g of black lotus seed, 30g of Chinese yam rhizome, 20g of eucommia bark, 15g of thinleaf milkwort root-bark, 25g of epimedium herb, 25g of common cnidium fruit, 13g of radix rehmanniae preparata, 15g of membranous milkvetch root, 13g of pilose Asiabell root, 9g of Chinese thorowax root, 16g of radix angelicae sinensis, 13g of paenoiae alba, 17g of cherokee rose fruit, 15g of songaria cynomorium herb, 9g of liquorice root, 20g of desertliving cistanche, 15g of prepared common monkshood daughter root, 10g of south dodder seed, 20g of malaytea scurfpea fruit, 15g of medicinal indianmulberry root, 15g of twotooth achyranthes root, 20g of sea clam powder, 17g of himalayan teasel root and 20g of jujube honey; placing the components after mixing into a ceramic jar, and then adding 5000g of 50-degree white spirit into the ceramic jar; and covering and sealing the liquor jar, burying the lower half part of the liquor jar underground, storing for 30 days, unsealing, filtering with a filter screen, and then filling the liquor into a glass bottle for storage, thereby preparing the health care medicinal liquor disclosed by the invention.

The invention discloses a method for preparing a mesenchymal stem cell by using umbilical cords and placenta, and mainly relates to a new source for the mesenchymal stem cell and a preparation method thereof. The umbilical cord or the placenta is employed by the stem cell as a cell source; tissues are assimilated at first; then a single cell suspension is prepared and inoculated into a culture bottle, a culture dish or a culture bag to amplify the mesenchymal stem cell, then amplified the mesenchymal stem cell is assimilated, collected and frozen. The mesenchymal stem cell prepared according to the technique of the invention contains a plurality of mesenchymal stem cells with excellent multiplication potentiality. The mesenchymal stem cell can be used in the experimental study, clinical treatment and tissue engineering, etc. The material source thereof is abundant; the separation successful rate and yield are high; the cell multiplication capacity is strong; and the contents of allergic and animal-originated substances are low.

The invention relates to a plant fermentation feed, belonging to the field of biotechnology. The present invention discloses a plant fermented feed, which is formed by taking the grain as auxiliary materials, a mixture of several green feeds as main materials, adding microbial preservative and then fermentation. The plant fermentation feed also contains 2% -4% of premix compounds; 25%-40% of the grain, 0.5% -1% of the biological preservative; the rest as a mixture of several green feeds, wherein, the total sum of the weight of the above components is 100%. The invention has advantages of low raw material cost, simple operation, suitablity for the majority of farmers and capability of industrialization promotion. The plant fermentation feed enlarges the raw material source, extends the shelf life of fermented feed and ensures the comprehensiveness of nutrients, good palatability of the plant fermentation feed, a high rate of digestion and absorption of the feed, improved daily weight gain and meat quality, and enhanced disease resistance.

The invention relates to a lamivudine tablet and a preparation method thereof, which solve the problem of expensive cost due to the fact that lamivudine is provided by foreign companies at present. The lamivudine tablet consists of the following raw materials by weight portion: 100 portions of lamivudine, 90 to 110 portions of microcrystalline cellulose, 15 to 25 portions of carboxymethyl starch sodium, 1 to 5 portions of hydroxypropyl methyl cellulose, 1 to 5 portions of magnesium stearate, and 90 to 110 portions of 50 percent alcohol. The lamivudine tablet has convenient raw material sources, low cost, simple production process, and convenient and quick operation, and is easy to process a main medicine, namely the lamivudine with an active ingredient into a tablet which satisfies the drug standard; and the preparation method has a simple and easy process, and steady and controllable product quality.