2829results about How to "Raw materials are easy to obtain" patented technology

The present invention relates to nano mesoporous and mesoporous-macroporous biological glass produced and through surfactant self-assembling and sol-gel process under mild reaction condition and possessing excellent bioactivity. The new type of biological glass has controllable mesoporous structure, homogeneous and adjustable mesopore distribution, relatively great specific surface area and porosity, macropores with adjustable size and porosity, and controllable shape. The present invention may be used as bone repairing material, dental material and rack material in tissue engineering and for medicine embedding and controlling releasing, etc.

The invention relates to a preparation method of a silicon / graphene nanocomposite material for a cathode of a lithium ion battery, which comprises the steps of: preparing oxidized graphite; preparing a silica / graphene nanocomposite material under the existence of a surfactant; then preparing the silicon / graphene nanocomposite material for the cathode of the lithium ion battery through the magnesiothermic reduction reaction. Compared with the prior art, the graphene in the composite material, prepared by the invention, can better inhibit volumetric expansion of silicon material in the insertion and separation process of lithium ions so as to improve the circulating performance of the composite material greatly, so that the volume of the material after 30 circulations under the current of 200mA / g is still maintained to be above 1100mAh / g.

The present invention relates to a preparation method of beta-methylcarbapenem antibiotic-meropenem. Said invention provides its chemical structure formula, and concrete steps of its preparation method.

The invention provides a nitrogen-doped high-luminescent carbon quantum dot and a preparation method thereof. The preparation method comprises the following steps: reacting by using a sodium citrate solution as a carbon source and ethanediamine as a source of N under a sealing condition, cooling an obtained product, then separating, and drying a solution obtained after separation so as to obtain the nitrogen-doped high-luminescent carbon quantum dot. The preparation method is simple in process, short in preparation period, low in manufacturing cost and good in repeatability; obtained raw materials are simple and easily available. The nitrogen-doped high-luminescent carbon quantum dot prepared by using the method is uniform in size distribution and high in luminescent density; the luminescent density of the nitrogen-doped high-luminescent carbon quantum dot is about 20 times of that of a general quantum dot, so that the application of the nitrogen-doped high-luminescent carbon quantum dot in the field of cell marking can be expanded. As the improvement of the luminescent density is caused by nitrogen doping, the nitrogen-doped high-luminescent carbon quantum dot prepared by the method has unique application when being used for detecting whether N exists in environments.

The invention relates to a heat-resistant and salt-resistant polymer thickening agent and a preparation method thereof. The thickening agent is generated by copolymerization of water-soluble compound with olefin groups and maleimide compound. The thickening agent has high viscosity in water body with high mineralized degree and positive divalent ion concentration and has better viscosity maintaining performance under the conditions of high temperature, high shear strength and high shear frequency, thus meeting the technical requirements for the thickening agent under the conditions of high temperature and high salinity in tertiary oil recovery at present, and improving the recovery ratio of a II or III type of oil reservoir in the tertiary oil recovery.

The invention discloses an in-situ synthesis method for a nano tin dioxide / carbon nano tube composite material, which mainly uses an inorganic tin salt, a carbon nano tube and an alkali source as raw materials. The experimental process mainly comprises the steps of precursor preparation, hydrothermal reaction, precipitate washing and drying and the like. The in-situ synthesis method for the nano tin dioxide / carbon nano tube composite material has the advantages that: a hydrothermal method is adopted to realize the in-situ deposition and the growth of the nano tin dioxide on the surface of the carbon nano tube; the obtained SnO2 nano particles have small and uniform particle size (less than 10nm), are well-crystallized, are uniformly coated on the surface of the carbon nano tube, and are tightly combined with the carbon nano tube; the composite material has potential application prospect in the aspects of a gas sensor material, an anode material of a lithium ion battery and the like. The method has no addition of any surface active agent, has simple and easily-obtained materials, simple process without pollution, short preparation period, mild reaction condition and low cost, and is suitable for large-scale production, so the method is an environment-friendly synthesis method.

The invention discloses a modified epoxy adhesive and a preparing method thereof. The adhesive is used for adhesive composite between an aluminum plate and an aluminum / paper honeycomb core or between a steel plate and the aluminum / paper honeycomb core, and the adhesive is composed of bi-component of component A and component B, wherein the ratio of the component A to the component B is 2 : 1 or 1 : 1, the component A is a modified epoxide resin system used as a base stock, and the component B is an amine curing agent system with modified amine and polyamide being principal materials and is used as a curing agent. The adhesive is prepared by preparing the component A and the component B respectively. The modified epoxy adhesive and the preparing method thereof have the advantages of being excellent in performance, simple in technology and low in cost.

The invention belongs to the technical field of medicine synthesis, and discloses a method for synthesizing linaclotide by three pairs of total selectively formed disulfide bonds. By using the process, formation of three pairs of disulfide bonds in linaclotide can be sequentially completed in the same solution system, so that the operation method of the process is simple, the yield of final fine peptide of linaclotide can be greatly increased, and large-scale production can be realized.

The invention relates to a method for preparing a titanium-alloy surface micro-arc oxidation antifriction compound film layer, which is characterized by comprising the following steps of: (1) micro-arc oxidation of an electrolyte; and (2) preparation of a compound film. The invention has the technical effects that: 1. the method provided by the invention is used for preparing the micro-arc oxidation compound film layer with an antifriction effect by introducing a solid lubricant and experimenting on a one-step method in the titanium-alloy micro-arc oxidation process on the premise of not destroying a micro-arc oxidation film layer, and the antifriction effect is remarkable; and 2. the composition raw materials of a sodium-silicate system electrolyte adopted by the invention are simply and easily obtained, a solution is neutral or weakly alkaline, the solution does not contain heavy metal ions, such as chromium ions and the like or environment-friendly constraint elements and does not contain substances harmful to human bodies and environments, the environmental pollution is small, and the requirements of high-quality clean production are satisfied.

The invention provides a preparation method of an oxidized graphene and sodium alginate composite absorbing material capable of removing ciprofloxacin in an aqueous solution. The preparation method comprises the following steps: dispersing a certain amount of oxidized graphene samples in deionized water, putting the oxidized graphene samples into an ultrasonic cleaner, and performing ultrasonic treatment for 6-10 hours; dissolving a certain amount of sodium alginate into an oxidized graphene solution subjected to ultrasonic treatment, and performing ultrasonic treatment for 20 minutes; dropewise adding the mixed solution into a 0.2mol / L calcium chloride solution by virtue of a peristaltic pump, soaking for 1-3 days, and cleaning with deionized water for 3-4 times, thereby obtaining a sodium alginate and oxidized graphene sphere hydrogel material; and freeze-drying, thereby obtaining oxidized graphene and sodium alginate sphere aerogel. The preparation method is performed under a relatively mild condition, and oxidized graphene is packaged in a sodium alginate network structure by an ion bridge method, so that the nano toxicity of graphene powder is avoided, and a new nano material capable of efficiently absorbing ciprofloxacin antibiotics in the aqueous solution is prepared. The preparation process is simple, easily controllable in condition, low in cost and suitable for large-scale batch production.

The invention discloses a functionalized graphene adsorbent and a preparation method and application of the functionalized graphene adsorbent. The adsorbent is mainly composed of grapheme and cetyl trimethyl ammonium bromide. The cetyl trimethyl ammonium bromide inserts into the edge or surface layer of the layered grapheme and or embeds into the edge or surface layer of the layered grapheme through the function of non-covalent bond. The mass fraction of the cetyl trimethyl ammonium bromide in the adsorbent is 40%-50%. The invention discloses the preparation method of the functionalized graphene adsorbent. The method comprises the steps of dispersing the graphene oxide into the water, adding cetyl trimethyl ammonium bromide to the dispersed suspension liquid and stirring to make reaction, then adding suspension liquid to the heated reaction system and conducting suction filtration, washing and drying to the black cotton-shaped precipitate obtained by reduction. The functionalized graphene adsorbent can wipe out the chrome in the waste. The adsorbent is added into the chromate waste water, control the temperature of the waste, then after the full adsorption and complete oscillatory removal of the chromate is completed. The functionalized graphene adsorbent and a preparation method and application of the functionalized graphene adsorbent has the advantages of being simple, high efficient, green, economical and environmental and the like.

The invention provides pitch modified from waste tire rubber powder and a preparation method thereof. The preparation method comprises the following steps of: heating 2-14 parts by weight of heavy fraction oil to 90-130 DEG C; adding 84-97.8 parts by weight of waste tire rubber powder and 0.2-2 parts by weight of additives to evenly mix; radiating the mixture by a microwave for 3-10 min; adding 60-85 parts by weight of pitch to 15-40 parts by weight of modified waste tire rubber powder at 160-200 DEG C to mix evenly; and shearing the mixture at a high speed to obtain a mixture, i.e. the modified pitch of the invention. By selecting waste tires as raw materials, the invention has simple and easily obtained raw material, cost saving, environmental protection and pitch performance improvement. The waste tire rubber powder is decarbolized under the microwave radiation to improve the storage stability of the modified pitch. Meanwhile, the waste tires are utilized. The invention has simple modified pitch preparation process and strong practicability.

The invention discloses a reversible terminal and synthesis and use in DNA synthesis sequencing thereof. The structural formula of the reversible terminal is described according to formula (I), wherein R1 is fluorescein and R2 is a connection unit. The cracking reversible terminal of the invention is available for DNA synthesis sequencing. At the same time, as synthesis required material is easily available and synthesis processes are all conventional chemical reactions, the reversible terminal disclosed by the invention is applicable for large-scale promotion and has good practical prospect due to a biological evaluation result showing that the reversible terminal is capable of totally satisfying biochemical reaction requirements of high-energy sequencing.

The present invention discloses a class of isocoumarin derivatives, which have the following general formula, wherein R is selected from hydrogen atom, C1-C10 alkyl, halogen, carbonyl, hydroxyl, nitrile, ester, alkoxy or trifluoromethoxyl, and E1 or E2 is selected from C1-C6 alkyl formate, phenyl or nitrile. The present invention further discloses a synthesis method of the isocoumarin derivatives. According to the present invention, divalent copper is adopted as a catalyst, a simple and easily-available o-halogenated benzoic acid and an alkyne compound are adopted as starting raw materials to synthesize an isocoumarin compound and derivatives thereof, and advantages of low cost, high yield, simple operation, easily-available raw materials, simple reaction equipment, easy industrial production, and the like are provided.

The invention discloses spherical activated carbon, and belongs to the field of production of activated adsorption materials. A preparation method includes the steps that pitch, thermosetting resin, aromatic hydrocarbon molecules and oxidation accelerators are evenly ground and mixed and then balled through a spraying method or a centrifugal method, and spherical pitch with the diameter ranging from 0.1 mm to 1.5 mm is obtained and screened; secondly, in an air atmosphere or a mixed atmosphere of air and oxidation promotion gas, cured spherules are obtained through thermal treatment; thirdly, porous cured spherules are obtained through extraction of composite steeping liquor; fourthly, the cured spherules are steeped into a thermosetting resin solution, the solution is filtered out, and the spherules are dried; fifthly, rapid thermal treatment is conducted on the spherules in the air atmosphere or the mixed atmosphere of air and oxidation promotion gas, and then spherules are obtained; sixthly, carbonization activation is conducted on the non-melting pitch spherules in the active atmosphere, and then the spherical activated carbon is prepared. The spherical activated carbon has the advantages that the specific surface area ranges from 800 m<2> / g to 1700 m<2> / g, the strength of the spherical activated carbon is larger than 95%, the strength is high, the process is simple, production efficiency is high, and cost is low.

The invention discloses a catalyst for complete catalytic oxidation of indoor low concentration formaldehyde at room temperature, the catalyst is characterized by comprising a nano metal oxide, a noble metal component and an assistant component, the nano metal oxide is used as a carrier, the noble metal component is at least one from platinum, palladium, ruthenium, rhodium, gold and silver, and the assistant is one or more than one substance from rare earth elements lanthanum, cerium, praseodymium, samarium, yttrium and neodymium, one or more than one kind of. The catalyst has the advantages that: the catalyst uses one or two rare earth modified nano inorganic oxide carrier, and is helpful to improve the dispersity and formaldehyde catalytic oxidation activity of metal nanoparticles. Therefore, under the circumstances of maintaining the same catalytic activity, the amount of noble metals can be reduced, and the cost of the catalyst can be reduced. The catalyst can completely oxidize formaldehyde at room temperature, does not need the help of optical, electric and other complex external auxiliary equipment. The catalyst can catalytically oxidize indoor low concentration harmful gas formaldehyde into non-toxic harmless carbon dioxide and water at room temperature.

The invention provides a cold-proof fabric and a manufacturing method thereof, and is characterized in that the manufacturing method comprises the steps: water soluble fiber is taken as core yarn or spinning yarn, and cotton, wool, terylene or acrylic staple fibre is taken as outer wrapping fiber or winding fiber to be wrapped into core spun yarn or Sirofil yarn; the obtained core spun yarn or Sirofil yarn is utilized for weaving; and the water soluble fiber is the obtained fabric is dissolved by solution. The invention has the advantages of simple technology, easy realization, low cost price, fluffy and soft effect, good heat retention and excellent ventilation property.

The invention discloses an extraction method of pawpaw polyphenol. The method comprises the following steps: firstly washing and denucleating pawpaw, cutting into small blocks for standby use, then after mixing the pawpaw small blocks with low congruent melting reagent-water mixed solution, using a stamping machine, preparing into pulp, using a microwave-ultrasonic technology to treat the pulp, filtering to obtain a filter liquor, finally adding salt into the filter liquor, carrying out vortex centrifugal to form an aqueous two phase, after taking the lower phase of the aqueous two phase, adding a certain amount of methyl alcohol therein, carrying out vortex centrifugal, separating a methyl alcohol upper phase, and evaporating a solvent to obtain an extractive rich in pawpaw polyphenol. The pawpaw polyphenol is extracted by adopting the extraction method, the extraction efficiency of the pawpaw polyphenol can be obviously improved, the extraction time is saved, the using of an organic solvent can be reduced furthermore, and the extraction method is more environment-friendly. Moreover, the polyphenol extractive obtained in the invention can be directly applied to the products such as toothpastes, facial cleansers, shampoo, liquid makeup and hand cream without subsequent purification, and the used product has efficient oxidation resistance.

The invention discloses a four-color fluorescence labeling reversible terminal and a use thereof in DNA (Deoxyribonucleic Acid) sequencing. The structural formula of the reversible terminal is as shown in a formula (I) in the specification, wherein R1 is triphosphate; R2 is H or OH; the basic group is U, C, A, G or derivatives thereof; the connecting unit is a bifunctional compound which is breakable under a mild condition; the fluorescence group is one selected from a combination of BODIPY, fluorescein, rhodamine, coumarin, xanthene, cyanin, pyrene, phthalocyanine, alexa, squarene dye and an energy transferring dye, and derivatives thereof. The reversible terminal provided by the invention can be used for DNA single-molecule sequencing; simultaneously, raw materials required by the synthesis of the reversible terminal provided by the invention are simple and easy to get and the synthesis process of the reversible terminal is completely involved with conventional chemical reactions, so that the four-color fluorescence labeling reversible terminal can be popularized and utilized to a large scale; biological evaluation results indicate that the reversible terminal is capable of completely meeting the biochemical reaction requirements of high-flux sequencing and has a good practical prospect.

The invention discloses conducting polymeric hydrogel, sponge, a preparation method and an application thereof. Eigenstate conducting high-molecular polymer is used as a three-dimensional framework of the hydrogel, and the hydrogel is an organic conducting material having good mechanical strength and compression elasticity. The hydrogel can be obtained through step-by-step oxidative coupling polymerization on pyrroles and pyrrole derivatives by using an oxidizing agent and long-term secondary growth. Content of the conducting high-molecular polymer in the hydrogel is 1.5-21.5 wt%; maximum compression ratio can reach 90%; the hydrogel recovers to normal within 10 s to 5 min after compression; conductivity is 0.001-10 S / m; and the hydrogel has shape memory characteristics, and compression deformation recovery quantity is directly related to solvent volume. The sponge is obtained by drying the hydrogel. Mechanical strength, elasticity and conductivity of gel can be greatly maintained. With increasing of compression ratio, resistance value of the sponge is gradually reduced by 0-10%. The hydrogel and sponge of the invention can be widely applied in fields of dye adsorption, stress sensing, electrical switch and the like.

The invention relates to a composition for killing microbes, which is mainly used for hand antisepsis, surgical hand antisepsis and antisepsis of skins and mucosa and can be also used for killing the microbes at the surfaces of the articles; polyhexamthylene guanidine hydrochloride and ethanol are adopted as main active fungicide ingredients to be combined with a fungicide synergistic agent isopropanol, wherein the concentration of the ethanol is 79-467 g / L, the concentration of the polyhexamthylene guanidine hydrochloride is 0.01-15 g / L and the concentration of the isopropanol is 3-54 g / L; meanwhile, a moisturizer, a stabilizing agent, a thickening agent and other agents can be added as needed to obtain different dosage forms; and the composition has the advantages of good fungicide effect, high speed, no washing, high stability, reduction of skin irritation of the product and functions of protecting and moisturizing skins.

The invention relates to ecological restoration, in particular to artificial soil and a preparation method thereof. The artificial soil consists of urban solid waste fly ash and sludge. The preparation method comprises the following steps: airing the fly ash and the sludge till water contents reach 1 to 5 percent and 55 to 60 percent of water content respectively, and mixing the fly ash and the sludge according to weight portion ratio of 3:1-1:2 to obtain the artificial soil. The preparation method realizes resource utilization of the urban solid waste; and the prepared artificial soil has better water retention and water storage performance, is close to meadow brown earth, has higher nutrient content at the same time, and has the heavy metal content far lower than national agricultural standard. The artificial soil can be used for replacing natural soil during the restoration of abandoned lands of mines. The preparation method realizes the resource utilization of the urban solid waste, uses waste to treat waste, and changes waste into valuable.

The invention provides a composite nano-coating material with hydrophobic and anticorrosive performances, and a preparation method and an application thereof. An in-situ chemical modification technique is adopted to graft the surface of graphene oxide with hydrophobic nanoparticles, and the surface of the graphene oxide sheet is coated with the hydrophobic nanoparticles to form a hierarchical structure in order to enhance the dispersibility, the hydrophobicity and water vapor barrier effect of the graphene oxide, so the water vapor resistance and the corrosion resistance of a coating are greatly improved; and the hydrophobic nanoparticle modified graphene oxide, silicone resin, a solvent, non-essential blending resin, a non-essential curing agent, a non-essential pigment filler and a non-essential coating additive are blended, and the obtained mixture is cured at -30-300 DEG C to form a film in order to obtain the composite nano-coating material with hydrophobic and anticorrosive performances. The composite nano-coating material can improve the hydrophobic and anticorrosive performances of a coating and avoid the corrosion failure of a substrate, and the preparation method has theadvantages of simple process flow, simple and easily available raw materials, and strong practicability.

The invention discloses a complex demetalation agent used for hydrocarbon ils. The comprised components and their weight are as follows: (a) demetalation agent with its weight 0.2- 10 times of that of calcium in hydrocarbon ils, said demetalation is alkylbenzene sulfonate; (b) adjuvant with its weight 0.2- 10 times of that of calcium in hydrocarbon ils, said adjuvant is one or combination of levulinate, glycolic acid, lactic acid, disodium editate, complexon, gluconic acid, tartaric acid or citric acid; (c) demulsifying agent with its weight being 2- 100 ppm of hydrocarbon ils. The invention aslo discloses a method for remove metal from hydrocarbon ils by using said demetalation, which is can be used in demulsifying agent process in oil field or on normal electric desalting device. The invention is characterized by easy get raw material, simple operation, high demetalation rate, and wide suitability for raw hydrocarbon ils.

Photocatalyst preparation method for glass fiber net carried TiO2 fixed membrane belongs to degradation pollution technique field. Use flexible glass fiber net after heat treatment as carrier; take butyl titanate, alcohol, water and nitric acid as volume share of 1:3~12:0.02~0.2:0.01~0.1 to prepare sol-gal liquid; use soakage-pulling method to make hard coat; after airing, finish hydrolysis and polycondensation; finally, bake to remove organic and make TiO2 fastness; repeat process and obtain TiO2 fixed membrane with determined thickness. It is easy to operate and produce in large scale; the product has high purity and can be used repeatedly; the TiO2 fixed membrane photocatalyst of this invention has high activity, good durability, and large specific surface; the membrane module is convenient to assemble, with cheap price and wide application both for drink water advanced treatment, pretreatment and terminal treatment for toxic harmful high content hard-degradation organic waste water, and treatment for polluted air.

The invention relates to the red beam luminescent dye which the receptor group is the 1, 3-indandione and the derivant 4H-pyrones. So the quenching effect of the new dyestuff has decreased efficiently and it has the saturated colour-purity. It can keep high efficient and the brightness in the high doping content. It is used for the organic photoconductor, the organic nonlinear optical material and the luminescent material of the electroluminescent cell. The emission band spectrum is in the red region of the visible spectrum and it has the high fluorescence quantum efficiency.

The invention relates to the technical field of organic macromolecular polymerization, aims to solve the problems that operation is difficult, storage is unstable, and the water resistance is poor due to the fact that overcoat varnish for conventional architectural coatings is subjected to extinction often by adding fumed silica or wax emulsion, and provides one-component acrylic ester matte core-shell emulsions with good anti-water-white performance and a preparation method and application thereof. The raw material components of the emulsions comprise alkyl methacrylate, alkyl acrylate, vinyl monomers without -COOH groups, vinyl monomers containing -COOH groups, organosilicone monomers, crosslinking monomers, a pH modifier, an emulsifier, an initiating agent and deionized water. The one-component acrylic ester matte core-shell emulsions are characterized in that after forming into films, the emulsions have a coarse structure with separated surface micro-phases through a core layer part along with the difference of the neutralization degree of the gadoleic acid functional monomer of 3-10 carbon atoms, and the emulsions with the different matte degrees are obtained. Water-based overcoat varnish prepared through the one-component acrylic ester emulsions has the advantages of good water-white resistance, storage stability, good weather resistance, low cost and the like.

The invention belongs to the field of functional foods, and in particular relates to natural high-iron albumen powder and a preparation method thereof. The method comprises the steps of soybean milk grinding, heated centrifugation, salting precipitation, centrifugal settling and freeze drying. The process comprises the following steps: weighing dry beans, pulping the dry beans by using PBS damping liquid with the quality 1-2 times of that of the dry beans and the concentration of 50mM after soaking the dry beans for 8-12 hours, and filtering and removing bean dregs, wherein polyvinylpyrrolidone in the damping liquid is 0.5-10 grams / liter; heating the pulp for 10-15 minutes in warm bath at 50-60 DEG C, cooling the pulp to room temperature, centrifugalizing at 4500-8000rpm for 10-20 minutes, removing starch and doped protein and taking supernatant liquid; dissolving magnesium chloride, dissolving sodium citrate after 30-120min, evenly mixing and stirring for 8-12 hours at 4 DEG C, wherein the concentration of the magnesium chloride and the concentration of the sodium citrate are respectively 200-600mM and 300-700mM; centrifugalizing at 0-7 DEG C with more than 10000rpm for 20-40 minutes, removing the supernatant liquid and grease and taking deposit parts; and carrying out freeze drying on the deposit parts.

The invention relates to controlled release mixed and compound fertilizer and a preparation method thereof, belongs to the field of fertilizers and solves the technical problem of providing the controlled release mixed and compound fertilizer. The controlled release mixed and compound fertilizer comprises a core layer and a coating layer covering the surface of the core layer. The core layer is made of mixed and compound fertilizer particles. The coating layer is a byproduct of wet-process phosphoric acid industry and a coating aid accounting for 0.1-20% of the controlled release mixed and compound fertilizer. The coating aid is made from at least one of humic acid, bee honey, starch, clay, chalk soil, kaolin, coal slime, magnesia, sepiolite powder, phosphogypsum, and calcium magnesium phosphate. A new way of using a large amount of the byproduct of wet-process phosphoric acid industry is provided; the byproduct of wet-process phosphoric acid industry is used as main material of the coating layer, the low-cost coating aid is utilized, and accordingly production cost of the controlled release fertilizer is reduced greatly; the preparation process of the controlled release fertilizer is simple and can be performed under normal temperature and normal pressure, raw materials applied are simply and easily obtainable and safe and nontoxic, and operation is simple.

The egg-yolk puff is made of the following raw material according to weight by parts: 10 to 40 parts of bread flour, 5 to 25 parts of cake flour, 8 to20 parts of butter, 2 to 10 parts of white sugar; 20 to 50 parts of ghee, 45 to 150 parts of stuffing, 0.01 to 0.04 part of foodstuff additive and 1 to 10 parts of water. The invention further provides an eggy-yolk puff preparation method for the same. The technology process is formed by weighing raw material, preparing doughs, covering ghee, pressing the doughs, opening the ghee, injecting stuffing, forming, brushing egg liquid, baking, cooling and packaging. The raw material can be easily achieved; the egg-yolk puff prepared by the method contains well-bedded multi-layered stuffing; the external layer is compact and crispy; the stuffing is soft and tender but not sweet and greasy; the puff cake has pure taste and fragrance and is not greasy; the egg-yolk puff is produced via a semi-mechanical way, so labor intensity can be reduced and production efficiency can be reduced; and the egg-yolk puff quality can be easily remained the same.