49results about How to "Act as a template" patented technology

A method of synthesizing titanium silicate molecular sieve is to hydrothermally crystallize the hydrolytic solution of silicon and titanium in a closed reaction vessel and then recycle the product. The method is characterized in that the hydrolytic solution of silicon and titanium is gotten by any one of the following three methods: A. under ultrasonic agitation, silicon source is first hydrolyzedin organo-alkali compound solution and then the titanium source is hydrolyzed in the solution; B. under the ultrasonic agitation, titanium source is first hydrolyzed in organo-alkali compound solution and then the silicon source is hydrolyzed in the solution; C. under the ultrasonic agitation, silicon source and titanium source are respectively hydrolyzed in organo-alkali compound solution and then mixed together. The synthetic method can eliminate partial uneven concentration, leads the amount of TiO2 generated by self agglomeration after the hydrolysis of titanium source to be as little as possible and reduces the production of extra framework titanium. Compared with the prior art, the TS-1 molecular sieve synthesized by the method not only has better catalytic oxidation activity and selectivity but also has better stability of catalytic activity.

The invention discloses a corrugated steel outside lining concrete structure for an underground utility tunnel and relates to underground utility tunnel structures. The problems that existing concretestructures are poor in foundation differential settlement resistance and seepage resistance, fracture and water leakage of connectors of prefabricated tunnels are liable to occur, and corrugated steel tunnel structures are inadequate in stable bearing capacity are solved. The corrugated steel outside lining concrete structure for the underground utility tunnel comprises an outer lining reinforcedconcrete ring, an arch corrugated steel plate and a bottom plate, wherein the outside lining concrete ring covers the outer plate face of the arch corrugated steel plate to form an arch; cup openinggrooves are formed in the transverse left side and the transverse right side of the bottom plate correspondingly; studs are arranged at arch springs of the arch corrugated steel plate; the arc springsare inserted into the cup opening grooves; post-cast arc spring concrete is arranged in the cup opening grooves; and the periphery of the arch and the bottom plate is wrapped with surrounding soil. The corrugated steel outside lining concrete structure is higher in construction speed, and the seepage resistance, the foundation differential settlement resistance and prefabricated section connection convenience of the structure are greatly improved.

The invention relates to a concave-convex rod enhanced aluminum oxide nanofiber membrane and a preparation method thereof. Components of the nanofiber membrane comprise concave-convex rods and aluminum oxide with the mass ratio being (1-30):100. The preparation method comprises the steps that inorganic aluminum salt, aluminum isopropoxide and aluminum powder are firstly used for being heated and flowing back under certain conditions of the pH value and temperature to prepare alumina sol, and then the alumina sol is added into the screened concave-convex rods and spinning auxiliaries of a certain proportion to obtain a composite spinning solution; high-pressure electrostatic spinning equipment is used for spinning, and a concave-convex rod enhanced aluminum oxide precursor nanofiber membrane is obtained; and finally through drying and high-temperature heat treatment, the concave-convex rod enhanced aluminum oxide nanofiber membrane is obtained. Compared with existing aluminum oxide nanofiber membranes, the prepared nanofiber membrane is lower in cost and high in productivity and shows more excellent flexibility and higher strength.

The invention discloses a hollow slab form used for a building and a construction method. The hollow slab form comprises a side template (1) and a prefabricated soleplate (8), wherein the side template (1) is dislocated and lapped by a lower side template (2) and an upper side template (3), and a hole or a notch (4) is arranged at the bottom of the lower side template (2) and is located at the inner side of the upper side template (3). The construction method comprises the following steps: a bottom template (11) is supported, a rib beam reinforcing steel bar (10) is bound, and the spliced side template (1) is placed; the prefabricated soleplate (8) is placed on a support part (7), and a horizontal support is provided; the concrete is poured, after the concrete reaches a certain intensity, the lower side template (2) is dismounted, the prefabricated soleplate (8) is arranged on the support rib (7), and mortar is painted on the prefabricated soleplate to form the hollow slab. The hollow slab form has the advantages of less material consumption, easiness in splicing, recycling, simple construction, and capability of minimizing widths of seams between the prefabricated soleplate and cast-in-place dense ribs, and improving integrity of the hollow slab.

The invention discloses a segment prefabricated assembled pier steel member which comprises a short steel component, a long steel component and anchoring positioning steel bars, a plurality of first reinforcing ribs are arranged on the short steel component, first vertical bolt holes are formed in the two ends of the short steel component, and a plurality of first horizontal bolt holes are formedin the lower end steel plate; a plurality of second reinforcing ribs are arranged on the long steel component, second vertical bolt holes are formed in the two ends of the long steel component, and aplurality of second horizontal bolt holes are formed in the lower end steel plate; the anchoring positioning steel bars are uniformly scattered in a steel reinforcement cage, spiral teeth are arrangedat the outer ends of the anchoring positioning steel bars respectively, and a plurality of matched reinforcing steel bars are arranged at the inner sides. The invention further provides a construction method and application adopting the steel component. A structural steel component is used for being adopted as a template and a supporting upper portion structure, temporary anchoring is performed,the construction safety is improved, the component can be disassembled after construction is completed to be recycled, and finally, factory prefabrication and on-site rapid assembling construction operation of bridge piers can be achieved.

The invention discloses a precast spliced concrete slab wall body, which comprises an inner wall panel, an outer wall panel and an intermediate concrete layer. The inner wall panel and the outer wall panel are formed by splicing precast concrete slabs, the middle part of the concrete layer is provided with a steel reinforced frame, the steel reinforced frame is arranged along the whole length direction of the wall body and is connected with a bearing component on the wall edge, and horizontal steel wires are arranged at certain intervals along the height direction of the steel reinforced frame; and the inner surfaces of the inner wall panel and the outer wall panel are respectively provided with a prismatic table type bulge, and positioning steel wires parallel to the plate direction penetrate out of the prismatic table, are arranged in a triangular shape and are in clamping connection with the horizontal steel wires in the steel reinforced frame of the wall body. The invention has the advantages of good wall integrity, convenient construction, no need for formwork removal, low average density and good thermal insulation performance. Moreover, for the wall body constructed in the method, the manufacturing cost per unit area can be reduced.

The invention discloses a preparation method of a Ni/NiO/C composite material and a supercapacitor. The preparation method of the Ni/NiO/C composite material comprises the following steps: preparing biomass powder from a biomass raw material; immersing the biomass powder into a nickel ion solution to enable the biomass powder to adsorb nickel ions, and then drying the biomass powder which adsorbsthe nickel ions; uniformly mixing the dried biomass powder with inorganic salt to obtain a mixture; heating the mixture to T1 in an N2 atmosphere to melt inorganic salt in the mixture, keeping the temperature for 1-2 hours, then heating to 500-650 DEG C, keeping the temperature for 5-30 minutes, and cooling to room temperature to obtain a product A; washing the product A with water at 60-100 DEG C, and then pickling, washing and drying to obtain the Ni/NiO/C composite material. The Ni/NiO/C composite material prepared by the method is good in conductivity, the Ni/NiO/C composite material is used as an electrode material of the supercapacitor, the problem of stability caused by volume change in the NiO charging and discharging process is relieved, the electrochemical performance of the supercapacitor is improved, the cycling stability is relatively good, and the cycle life is long.

The invention relates to a green preparation method of manganese dioxide. The preparation method comprises the following steps: adding a potassium permanganate solution into a pollen suspension to react; after the reaction, filtering, and washing filter residues; drying and crushing the filter residues, and obtaining an intermediate powder product; calcining the intermediate powder product to obtain a final product manganese dioxide. Pollen is adopted as a reducing agent and a biological template, and the potassium permanganate is used as a manganese source to prepare manganese dioxide microcrystals. The pollen can play a role of the reducing agent in the generation of the manganese dioxide, and the pollen and a special granular structure thereof also play a role of the template in generating the manganese dioxide particles. The obtained manganese dioxide product is adopted to photocatalytically degrade malachite green dye, and the catalytic performance is good. The green preparation method is simple in operation, moderate in condition, energy-saving and environment-friendly.

The invention discloses an electrostatic spinning synthesis method for an Alpha-Fe2O3 rod-shaped structure. The method comprises the following steps: mixing ethanol and DMF (Dimethyl Formamide), adding trivalent ferric salt, polyether F127 and pragmoline into a mixture, stirring for dissolving the raw materials, then adding an L-lysine aqueous solution and PVP, and uniformly stirring the raw materials, thereby obtaining a spinning fluid; preparing the spinning fluid into precursor fibers by virtue of an electrostatic spinning method, and calcining the precursor fibers, thereby obtaining a product. By virtue of designing a precursor reaction system and regulating and controlling the calcining system, an Alpha-Fe2O3 rod-shaped structure with adjustable length-diameter ratio is obtained; themethod is simple in preparation process and easy to regulate and control, adopted raw materials are extensive in source and low in price, the product is unform in microcosmic appearance and good in repetitiveness, and has extensive application prospects in the field of gas sensing, catalysis and the like.

The invention discloses a square multi-cavity steel plate-concrete composite floor, and belongs to the field of constructional engineering. The square multi-cavity steel plate-concrete composite floorcomprises a multi-cavity space steel floor and concrete; the concrete is poured into the square multi-cavity steel floor to form a combined integral component; the square multi-cavity steel floor iscomposed of a steel plate shell and steel plate cavities with notches; the steel plate is composed of five steel plates in a welding mode; the steel plate cavities with the notches are connected in aninserted mode up and down and welded in the steel plate shell to form the square multi-cavity steel floor; and the concrete is poured into the steel floor to form the square multi-cavity steel plate-concrete composite floor. The square multi-cavity steel plate-concrete composite floor has the beneficial effect that the problems of liable cracking and exposure cracking of traditional concrete components can be solved, the steel plate cavities have a high lateral restraining effect on the concrete, the compressive property of the concrete can be fully played, the self weight is light, the composite floor after molding has better overall performance, the steel plate shell replaces steel bars and structural steels in a traditional floor slab to play the role of the framework, the constructionoperation of traditional form erecting and form stripping is avoided, the square multi-cavity steel plate-concrete composite floor can replace a traditional framework in the construction site, the construction progress is increased, and the economic benefit is improved.