99results about How to "Spatial structure is stable" patented technology

The invention discloses a methanol-gasoline-resisting static-electricity-conducting anticorrosive paint, which is prepared by the following raw materials according to weight: a component A consisting of 25-39 parts of epoxy resin, 5-20 parts of pigment and filler, 15-28 parts of static-electricity-conducting filler, 0.2-2 parts of carbon nanotubes, 0.3-1 part of cinnamyl aldehyde, 2-6 parts of auxiliaries, and 5-16 parts of diluent, and a component B consisting of 7-11 parts of modified aromatic aliphatic amine hardener. According to the invention, the epoxy resin is formed by epoxy phenolic resin and bisphenol F-type epoxy resin according to a weight ratio of 3:(1-3), and the modified aromatic aliphatic amine hardener is one out of D9050 and D9340 or the mixture of the two. According to the invention, the component A and the component B are prepared first respectively. When in use, the component B is slowly added into the component A to be stirred uniformly to obtain a final product. The anticorrosive paint prepared in the invention can resist permeation and corrosion of strong solvents, and free particles cannot be separated out from the methanol gasoline after long-term storage, thereby preventing influence resulted by storage to the quality of a finished oil product.

The invention discloses a method for preparing Nisin/chitosan/polylactic acid composite nanofiber mats by coaxial electrospinning. The method comprises the following steps: dissolving chitosan in an acetic acid solution, stirring and dissolving to prepare a chitosan solution; adding Nisin, stirring to prepare a Nisin/chitosan solution which is used as a shell spinning solution for coaxial electrospinning; dissolving polylactic acid in dichloromethane to prepare a polylactic acid solution which is used as a core spinning solution for coaxial electrospinning; and carrying out coaxial electrospinning on the shell spinning solution and the core spinning solution to prepare the Nisin/chitosan/polylactic acid composite nanofiber mat with Nisin and chitosan as the shell and with polylactic acid as the core. The method is simple and feasible, and cost is low. The prepared biodegradable bioactive antiseptic composite nanofiber mat can be used in the fields of wound dressing, tissue engineering and food package and the like, has excellent antibacterial effects, is safe and harmless, and will not cause drug resistance of bacteria.

The invention which belongs to the solid waste resource field relates to a cyclically degradable granulated conditioning agent and an application of the conditioning agent in sludge compost. Problems of large dosage, difficult recycle, sludge compost cost increase, slow late degradation and compost period prolongation of traditional organic conditioning agents are solved, and problems of the residual of an inorganic conditioning in the compost and finished product quality reduction are simultaneously solved. The cyclically degradable granulated conditioning agent of the invention is a wood homogeneous body with particle sizes of 0.5-10cm. The application comprises the following steps: 1, mixing sludge with the conditioning agent to obtain a mixture; 2, fermenting the mixture at a high temperature; and 3, discharging the obtained material after the fermentation, and screening out the conditioning agent, wherein the screening rate is greater tan 98%. The conditioning agent of the invention has the advantages of stable space structure, good fluidity, easy screening, recyclable use, good hydroscopicity, water adjustableness, good microbial adhesiveness, recyclable inoculation, and no influence of the finished product quality by the residual. The conditioning agent has very high popularization and application values.

The invention discloses a compound with electrochemical response to formaldehyde and a preparation method thereof. The cobalt complex electrocatalytic material is a 4,4'-dipyridine sulfadiazine cobalt compound with certain space structure, and the molecular formula is C40H34CoN12O4S2. The preparation method of the sulfadiazine cobalt compound electrocatalytic material is implemented by carrying out chemical reaction on sulfadiazine with conjugated extended pai bond and 4,4'-dipyridine to obtain the novel cobalt compound. The compound used as an electrocatalytic active material has accurate space structure and accurate molecular formula; the cobalt ions can form stable coordinate bonds with the ligand by utilizing 3d orbit, thereby being beneficial to the transfer of electrons and promoting the proceeding of the electrochemical reaction, and thus, the compound has favorable electrocatalytic activity for formaldehyde. The cobalt complex used as the electrocatalytic active material has wide application prospects.

The invention relates to a method for detecting alpha-fetal protein on the basis of an RGO-CS-Fc/Au NPs nano composite material and aptamers. According to the method, the surface of a silk-screen printing electrode is modified with RGO-CS-Fc/Au NPs by means of an electro-deposition technology and an electrostatic adsorption effect; AFP aptamers are loaded on the surface of the RGO-CS-Fc/Au NPs bymeans of a nanotechnology and an intermolecular force, and the aptamers exist on the surface of the composite material in the form of single-chain structures due to the unstable spatial structures ofthe aptamers; after AFP is added into the surface of the electrode, the AFP can be specifically combined with the AFP aptamers, so that stable spatial structures can be generated, and therefore, the AFP and the aptamers can be orderly arranged on the surface of the electrode; a current value is detected through a DPV method, a relation curve of current and the concentration of the alpha-alpha protein is depicted; and therefore, the quantitative detection of the alpha-alpha protein is realized. The method has the advantages of simple operation, time-saving performance, low cost and low detection limit.

The invention provides high-strength anti-puncturing graphene modified plastic which comprises the following materials in parts by weight: 40-80 parts of PA66, 30-60 parts of glass fiber, 0.8-3 parts of graphene, 0.5-1.5 parts of nanometer zinc oxide, 0.3-2 parts of surface active agent, 0.1-1 part of dispersing agent, 0.5-2.5 parts of coupling agent and 0.1-0.6 part of antioxidant. According to the invention, PA66 is used as a plastic substrate and the graphene is utilized to modify, so that the mechanical property of the plastic is promoted; the graphene is subjected to nanometer zinc oxide intercalated modification, so that the dispersing performance of the graphene is obviously promoted; the other auxiliary additives jointly have a cross-linking effect on the plastic, so that the toughness of the plastic is greatly promoted; and the plastic has an excellent anti-puncturing property and is light and practical.

The present application discloses a composite reverse osmosis membrane and a preparation method thereof. The method includes: uniformly mixing fluorine-containing polyaryletherketone of a certain concentration and silane-modified polyaryletherketone as a casting solution; coating a non-woven fabric, i.e., a substrate, with the casting solution to form a support layer; then coating the surface of the support layer with a solution A and a solution B sequentially for reaction to form a polyamide desalination layer; and coating the polyamide desalination layer with a modified polyvinyl alcohol anti-pollution layer. By means of the method, the composite reverse osmosis membrane is prepared. Compared with the prior art, the present application can prepare a composite reverse osmosis membrane with high temperature resistance and high strength by using the composite modified polyaryletherketone as the support layer, and moreover, uses polyvinyl alcohol as a component of the anti-pollution layer, and has good anti-pollution properties.

The invention discloses pyridylamine chelate resin for removing heavy metal cations in strong acid wastewater and a preparation method of the pyridylamine chelate resin, which belongs to the field ofwater treatment. The pyridylamine chelating resin has the following structural units: x represents the number of units of an o-methylpyridylamine structure, x is greater than or equal to 1, n represents the number of structural units of a resin macromolecular skeleton, n is greater than or equal to 800 and less than or equal to 5000, and R1 represents H or an alkyl chain CH3; the applicable heavymetal cations comprise Cd (II), Ni (II), Cu (II), Zn (II), Co (II) and the like. The pyridylamine chelating resin provided by the invention is wide in preparation raw material source, low in cost, simple in synthesis steps and easy for large-scale production.

The invention discloses a molecularly-imprinted nanoparticle for glycoprotein and a synthesis method thereof, belongs to the field of analytical chemistry, and relates to synthesis of molecularly-imprinted polymers. The synthesis method comprises the following steps: firstly, preparing a solution phase A from template glycoprotein molecules, preparing a solution phase B from a functional monomer and a cross-linking agent, and preparing solution phase C from an initiator; secondly, respectively fixing the solution phase A, the solution phase B and the solution phase C on three micro-fluidic injection pumps with adjustable flow rates, connecting and mixing the solution phase A and the solution phase B through a Y-shaped three-way valve, connecting and mixing the mixed solution and the solution phase C through another Y-shaped three-way valve, and enabling the obtained mixed solution and the solution phase C to flow into a reactor for a polymerization reaction; and finally, collecting a polymerized nanoparticle at the tail end of the reactor, and removing the glycoprotein template molecules to obtain the molecularly-imprinted nanoparticle for glycoprotein. The molecularly-imprinted nanoparticle for glycoprotein is prepared in a microfluidic mode, operation is easy, continuous production can be achieved, and the obtained molecularly-imprinted nanoparticle can be used for specific recognition of target glycoprotein molecules.

The invention relates to a Beta lamellar blocking peptide which can be used for preventing and/or curing Alzheimer's disease and the application of the polypeptide used for preventing and/or curing Alzheimer's disease.

The invention relates to a rare-earth-doped lithium manganese silicate positive electrode material and a microwave-assisted preparation method thereof. The preparation method mainly comprises the following steps that firstly, a certain quantity of lithium sources, manganese sources, silicon source compounds, carbon source additives and rare earth compounds serve as raw materials to prepare a rare-earth-doped lithium manganese silicate material precursor; secondly, the precursor is placed in a microwave field for microwave sintering under a protective gas atmosphere to obtain the rare-earth-doped lithium manganese silicate positive electrode material. According to the preparation method, the stability of the material is improved through the octahedral site preference energy characteristic of rare earth elements; the excellent wave absorbing property of the rare earth elements and microwave-assisted thermal treatment are combined, so that the wave absorbing property of the material is remarkably improved, then reaction frequency is increased when microwaves are propagated in a base material, a reaction can be conducted more sufficiently, the purity of the product is improved, and theelectrochemical performance of the material is further optimized; the synthesis period is shortened, and the production efficiency is improved.

A cloud gel electrolyte for lead-acid storage batteries relates to the field of production technology of a cloud gel electrolyte used for lead-acid storage batteries. The electrolyte is prepared by mixing mainly sulfuric acid, cloud gel powder, an activated assistant, an additive, and deionized water. The electrolyte has good homogeneity, does not hydrate or become stratified, is convenient for filling operations, and is widely applicable to lead-acid storage batteries with various specification models by adjusting component ratios in the electrolyte. Storage batteries filled with the cloud gel electrolyte has a large initial capacity, strong charge acceptance, excellent low-temperature resistance, good starting performance, stable discharge performance, and long cycle life.

The invention provides a thermosetting liquid optical adhesive composition and an application thereof; the thermosetting liquid optical adhesive composition is tested according to a GB/T 4509-2010 asphalt needle penetration determination method, and the needle penetration of the thermosetting liquid optical adhesive composition is 160-250 mm. The thermosetting liquid optical adhesive provided by the invention has proper needle penetration after being cured, is easy to repair, does not greatly fluctuate along with the influence of temperature, humidity, UV aging irradiation and the like, and has higher cohesion strength, better binding power and excellent binding power for a binding material of a display module.

The invention relates to a modified carbon nanotube reinforced shape memory epoxy resin composite material and a preparation method thereof. The composite material is prepared from the following raw materials: epoxy resin, a curing agent, a catalyst and modified carbon nanotubes, and the modified carbon nanotubes are carbon nanotube powder of which the surface is modified with epoxy groups. The invention also provides a preparation method of the modified carbon nanotube reinforced shape memory epoxy resin composite material. The method comprises the following steps: grafting carboxyl on the surface of the carbon nanotube, and then grafting an epoxy group; and uniformly mixing the modified carbon nanotubes, epoxy resin, a curing agent and a catalyst, and pouring the mixture into a mold forcuring. The modified carbon nanotube reinforced shape memory epoxy resin composite material provided by the invention shows good application performance in the aspects of mechanical strength, toughness, the shape memory performance and the like.

The invention discloses a fast combination locking-type scaffold system. The fast combination locking-type scaffold system is mainly composed of structural parts and partial accessories such as vertical rods, horizontal rods and inclined rods. The vertical rods are provided with a multi-hole connecting disk and a connecting locking and docking system so as to be assembled with the matching horizontal rods, the inclined rods, and the like into a construction structure which is stable in structure and can meet various load requirements; and the existence structures of the basic elements are interrelated and interdependent, all the structural parts adopt standard parts series, scale production can be achieved, and safety, reliability, efficiency and practicality are achieved really.

The invention discloses an architectural engineering construction on-site protective shed which is composed of a basic structure and a force unloading structure. The basic mechanism is composed of a steel structure bracket and a fixed protective layer to form a supporting frame and the most basic head top protection measure; the force unloading structure comprises a first movable plate, a second movable plate and springs which connect the first movable plate and the second movable plate with the fixed protective layer, and thus an energy absorbing structure is formed; in addition, the force unloading structure further comprises long strip holes and sliding rods which are formed/arranged on the lower portions of the first movable plate and the second movable plate; and the stroke of a falling object is enlarged in collision through sliding of the sliding rods along the long strip holes, so that mutual interaction force in collision is reduced. The beneficial effects of the architectural engineering construction on-site protective shed can be known according to detail description of the scheme, the structure is simple, the design is reasonable, when the falling object in the high place falls down, the force unloading structure can dissolve the impact force of the falling object, and the situation that impact force of the falling object penetrates through the top protection is avoided.

The invention provides a BCSLTM-SA composite microwave dielectric ceramic and a preparation method thereof. The BCSLTM-SA composite microwave dielectric ceramic is prepared from Ba1.2Ca0.4Sm3La1.26Ti8.99Mn0.01O26 and SmAlO3, wherein the mass percent of the SmAlO3 is 5 to 15 percent. Compared with the prior art, the BCSLTM-SA composite microwave dielectric ceramic provided by the invention is formed by compounding BCSLTM and SA in specific proportion. The BCSLTM-SA composite microwave dielectric ceramic comprises two crystal phase structures of Ba1.2Ca0.4Sm3La1.26Ti8.99Mn0.01O26 and SmAlO3; thestructure is stable; specific dielectric constant and high Q*f values are realized; meanwhile, the resonant frequency temperature coefficient is continuous and adjustable.

The invention relates to a preparation method of a thermostable and high-toughness ceramic glaze and belongs to the technical field of ceramic glaze preparation. The preparation method includes: usingaluminum nitrate nonahydrate crystals and ammonium bicarbonate as the raw materials to prepare a grinding product, using sodium silicate and ammonia water as the raw materials to prepare a calciningproduct, mixing the calcining product and the grinding product with other stone materials, crushing the mixture, subjecting the crushed mixture to high-temperature melting, coating a green body with the molten mixture, and naturally cooling to obtain the thermostable and high-toughness ceramic glaze. The preparation method has the advantages that specific surface area can be increased by preparingan aluminum oxide ceramic glaze into a nano material, nano aluminum oxide is evenly dispersed on the surface of a ceramic glaze interface and can increase the overall thermostability and mechanical performance of the ceramic glaze, a nano-silica material prepared by the sodium silicate is introduced into the ceramic glaze and can increase the toughness and thermostability of the ceramic glaze, and the prepared ceramic glaze is promising in application prospect.

The invention provides an emulsion stabilizer containing bacterial cellulose. The emulsion stabilizer containing bacterial cellulose is prepared from the following ingredients in percentage by weight:9-21% of bacterial cellulose, 5-10% of soybean saccharine, 3-9% of anthrax gum, 6-12% of sodium carbohydrate cellulose, 7-21% of sucrose ester, 20-50% of glycerin monochromatic ester and 1-41% of extramarital. The invention also provides a cocoa milk beverage containing the emulsion stabilizer. The cocoa milk beverage contains the following ingredients in percentage by weight: 0.5-2.0% of alkalies medium fat cocoa, 2.0-8.0% of full cream milk powder, 3.0-10.0% of white sugar, 0.04% of calcium, 0.1-1% of an emulsion stabilizer, 0.01-0.05% of milk flavor, 0.03-0.1% of chocolate essence, and thebalance of water. The emulsion stabilizer is capable of not only effectively preventing cocoa and protein in the cocoa milk beverage from being precipitated, but also preventing calcium from being precipitated, preventing fat in the cocoa milk beverage from floating up, and further preventing precipitation caused by high-temperature sterilization.

The invention relates to a fudosteine oral liquid and a preparation method thereof. The fudosteine oral liquid comprises fudosteine, a metal ion compound, an acid-base regulator and a solvent, whereinthe fudosteine and metal ions form a chelate through chelation. The preparation method comprises the following steps: (1) mixing the metal ion compound with part of the solvent, and stirring until the metal ion compound is dissolved; (2) mixing the solution obtained in the step (1) with the fudosteine, stirring until the solution is dissolved, and adding the acid-base regulator to regulate the pHvalue of the solution; and (3) carrying out chelation reaction on the solution obtained in the step (2), cooling, and adding the solvent to the target quantity, thereby obtaining the fudosteine oralliquid. The oral liquid has the advantages of favorable stability and lower isomer impurity content, and solves the problem that the isomer impurity content in the fudosteine oral liquid increases quickly as the time goes on in the prior art.

The invention relates to the technical field of building engineering equipment, and discloses an assembled building truss structure which comprises a truss connecting rod. A fixed sleeve is arranged on the outer surface of the truss connecting rod, fixed clamping plates are fixedly arranged on the upper side and the lower side of the outer surface of the fixed sleeve, a mounting flange plate is arranged in the middle of the outer surface of the fixed sleeve and located between the two groups of fixed clamping plates, and a movable pressing sleeve is fixedly arranged on the outer surface of anadjusting screw rod through a nut. A movable pressing tongue is movably sleeved with the movable pressing sleeve, and one end of the movable pressing tongue is in contact with one end of the fixed sleeve. According to the assembled building truss structure, as for the arrangement of an auxiliary support, auxiliary straight rods can be conveniently and flexibly arranged in the whole building trussstructure, so that a stable and effective triangular structural unit is formed, the stability of the assembled building truss structure and the rigidity of the whole truss structure are improved, andthe safety and the stability of the assembled building truss are effectively improved.