123results about How to "Play a double role" patented technology

The invention discloses a preparation method for silver-coated silicon dioxide composite microsphere particles. The preparation method comprises the steps as follows: preparing nano silicon dioxide particles; sulfhydrylating the silicon dioxide particles; dispersing the sulfhydryl-modified silicon dioxide particles in a silver ammonia solution; and adding polyvinylpyrrolidone to obtain final products, namely the silver-coated silicon dioxide composite microsphere particles. According to the preparation method, the concentration, the temperature and the pH value of the solution are adjusted, and polyvinylpyrrolidone which is both a reductant and a surfactant is used at the same time, so that on one hand, new silver nanoparticles are prevented being oxidized, on the other hand, the silver nanoparticles are prevented from further growing, and therefore, the compactness and the uniformity of a nanosilver coating layer and the directional control of the thickness of the nanosilver coating layer can be achieved; and the preparation method is simple, low in raw material cost and suitable for industrial production.

The invention relates to a light bioreactor for culturing microalgae systematically, which comprises an in-parallel pipe group, a control valve, a pH value sensor, a temperature sensor, a light sensor, a water mist sprayer, a liquid level alarm, a pipe pump, an air inlet pipe, an exhaust pipe, a feed pipe, a discharge pipe, a microporous pipe, a liquid storage tank, a cool and heat exchanger, a control panel, a bracket, a lighting facility and the like, wherein the pipe group and the valve are effectively connected in a close way, specific surface area is enlarged simultaneously when the volume of microalgae is enlarged during culturing, and the invention has small ground occupation, effectively uses stereo space and has sufficient air exchange, and utilization rate is increased; during culturing, the invention monitors parameters such as temperature, pH value, concentration of a culture medium, lighting intensity, and the like in real time, provides the best condition for microalgae growth and metabolism, effectively reduces culturing time, avoids danger of outside harmful creatures, and decreases production cost. The bioreactor can be used for culturing microalgae cells in a continuous or semi-continuous way and producing microalgae protein, biodiesel or aquatic baits and other products.

The invention relates to a method for reinforcing a brick-concrete structure by utilizing an angle steel frame, belonging to the anti-earthquake reinforcement field. According to the method disclosed by the invention, a reliably connected steel frame formed by double-angle steel can replace a ring beam and a structural column, and field bolt assembly connection through factory pre-fabricated components can be realized, thus the safe, environment-friendly and green construction is realized; simultaneously, angle steel, a wall and a pre-fabricated floor slab are connected by bolts and epoxy resin, and the double-angle steel is also can be used as a round hole plate end part support, so that the connection reliability of the pre-fabricated floor slab and the wall is ensured, double functions of the ring beam and a supporting beam are exerted, reinforcement workload and cost are saved, and the original structure and reinforcement components mutually and cooperatively work. According to the method for reinforcing the brick-concrete structure by utilizing the angle steel frame, disclosed by the invention, the binding-type reinforcement construction speed is fast, and the reinforcement construction is safer, so that the method is very suitable for residential buildings.

The invention relates to a multi-component composite anode material and a preparation method thereof. The multi-component composite anode material is characterized by comprising the following components in mass fraction: 15 to 30% of nano silicon powder, 5 to 9% of carbon nano tube, 19 to 40% of expanded graphite, and 37 to 55% of amorphous carbon. The multi-component composite anode material is prepared by carbonizing polyving akohol or polyethylene glycol at high temperature. The nano silicon powder serving as a core active material is used for storing energy; the carbon nano tube is used for conducting electricity; the expanded graphite is dual-functional, including effects of serving as a massive and rigid buffer space and a conductive additive during charging and discharging through silica powder; the amorphous carbon is prepared by carbonizing polyving akohol or polyethylene glycol at high temperature and can be used as a flexible buffer space. The composite material is outstanding in electrochemical properties.

The invention discloses a three-dimensional graphene composite electrode with three-dimensional porous foamed nickel as a base body. Graphene directly grows on the base body, and flowerlike Ni3S2 directly grows on the graphene. The invention further discloses a preparation method and application of the three-dimensional graphene composite electrode. The preparation method has the advantages of being simple in process, low in cost, short in period, low in energy consumption and the like and is suitable for large-scale industrial production. The prepared three-dimensional graphene composite electrode does not contain any conductive agent and adhesive. Due to the special three-dimensional porous structure and the conductive and fixing function of the flowerlike Ni3S2 and graphene, when used for a sodium-ion battery, the composite electrode shows high capacity and good circulation stability.

The invention discloses an energy-saving light emitting diode (LED) integrated sign with accident lighting and equipment nameplate functions and belongs to the field of lighting devices. A sign body is a transparent light guide panel; an equipment number is marked on the transparent light guide panel; LED light-emitting devices are arranged around the transparent light guide panel; the light-emitting surfaces of the LED light-emitting devices face the transparent light guide panel; the LED light-emitting devices are connected with a power supply of an emergency accident lighting device of a transformer substation through wires. When the emergency accident lighting device of the transformer substation is started, the LED light-emitting devices are energized to emit light to lighten the equipment number on the transparent light guide panel, convenience is provided for operators in reading an equipment number nameplate mark, and an accident emergency lighting source is provided for a part where the sign is located. The transparent light guide panel can be used for displaying equipment number words and can be used as a planar light source to lighten a surrounding environment, so that the misoperation of the operator can be avoided, lighting energy is utilized to the greatest extent, the emergency accident lighting device and the equipment number nameplate mark are integrated, and double effects are achieved.

The invention discloses a retaining and protecting method for a vacuum preloading foundation excavation at a soft soil road section, which is used for vacuum preloading for the soft soil road section when in the retaining and protecting for the foundation excavation in the underpass construction of the soft soil road section. In the method, firstly, cement mixing piles are piled at the corresponding positions of the ground level road at the two sides of an underpass section and are used for enclosing and dividing the soft soil road section into a plurality of closed regions, plastic drainage boards are piled in each closed region at a certain interval, a sand cushion is laid at the ground of the closed region and is internally embedded with a strainer, and the sand cushion is covered by a sealing film to be isolated from atmosphere; then, a vacuum pump is communicated with the strainers in the sand cushion and exhausts the air in the sealing film; finally, the vacuum degree in the sealing film can be kept to be more than 80KPa; the degree of consolidation of the foundation is more than 80% when stopping the preloading for the underpass section, then the foundation excavation is excavated by the underpass section, and a retaining wall of the underpass section is arranged.

The invention relates to a preparation method of high-flame-retardancy expandable graphite, which comprises the following steps: oxidizing graphite by using concentrated sulfuric acid/nitric acid mixture, nitric acid/phosphoric acid mixture, fuming nitric acid or concentrated sulfuric acid together with a solid strong oxidizer which accounts for 5-60 wt% of graphite, wherein the reaction temperature is 15-50 DEG C, and the reaction time is 10-100 minutes; after the reaction finishes, filtering, and washing with water until the pH value is 4-7, thereby obtaining the primary expandable graphite; and reacting the primary expandable graphite with guanidine salt solution at 20-80 DEG C for 20-200 minutes, carrying out repeated vacuum filtration, washing with water until the pH value is 6-7, and baking at 40-80 DEG C for 10-72 hours to obtain the high-flame-retardancy expandable graphite. The method provided by the invention intercalates guanidine salts into the interlayer of the expandable graphite, enhances the expansion ratio and flame retardancy, and can be widely used for flame retardancy for plastics, rubber, paint, foam and various other materials.

The invention discloses a liquid curing agent for a phosphate bonding agent and application thereof. The curing agent comprises two components, wherein 45.16%-55.17% of silane coupling agent serves asthe component I; 44.83%-54.84% of the component II comprising water and citric acid, and the component II, the citric acid accounts for 9.68%-17.24%, and the water accounts for 27.59%-45.16%. The liquid curing agent disclosed by the invention is wide in ram material source, low in cost and simple in preparation and application process. The liquid curing agent is long in using time when used for self-hardening sand production and short in demolding time and is used for bowing hardening of cold core boxes. The adopted compressed air is low in cost, environment-friendly and free of pollution.

The invention relates to the technical field of wastewater treatment and particularly discloses a catalytic wet oxidation treatment method of organic wastewater. The treatment method comprises steps as follows: the organic wastewater and an oxidizing agent enter a reactor for a reaction, and the reactor is sequentially filled with a catalyst A and a catalyst B according to the contact sequence with the organic wastewater. The method adopts a simple process, is good in stability and high in COD removal capability and can solve the problem about metal loss.

The invention discloses a preparation method of high strength antibacterial non-woven fabric. The method comprises the following steps: step one, adding 50 to 60 parts of polypropylene into a calcining furnace, increasing the temperature to 220 to 280 DEG C till polypropylene is completely molten, adding 10 to 20 parts of modified liquid, increasing the stirring rotate speed to 200 to 300r/min, stirring for 10 to 20min, then adding 5 to 10 parts of rice hull powder, and 1 to 4 parts of polytriazole resin, continuously stirring for 20 to 30min, and then adding 2 to 4 parts of lignin. The methodhas the advantages that polypropylene is taken as a base material, hemicellulose has excellent oxygen barrier property and oil resistance, methylcellulose has excellent mechanical property, the hemicellulose and the methylcellulose are cross-linked, the added nanometer titanium dioxide is taken as an antibacterial agent, and formed crosslinking modified liquid has tough and soft properties.

The invention relates to two variants of a safety circuit for valves actuated hydraulically via a positioning cylinder. In the first variant, the positioning cylinder (2, 202) can be hydraulically or pneumatically depressurized in an emergency. For this purpose, the positioning cylinder has two cylinder chambers (4, 204) which can be fluidically connected via a working line (8a-f, 108a-f, 408a-i). A first and a second series-connected shut-off valve (12, 14) are provided in the working line. According to the second variant, the positioning cylinder can be hydraulically or pneumatically actuated in an emergency. For this purpose, the positioning cylinder has at least one first cylinder chamber, which in an emergency can be supplied with pressurised fluid via a first pressure medium flow path. A first and a second series-connected shut-off valve are provided in the first pressure medium flow path.

The invention relates to the technical field of furniture processing, and discloses a cutting device for furniture wood. The cutting device comprises a machine frame, wherein a supporting table used for containing wood is arranged on the machine frame, and a cutter, a first driving mechanism used for driving the cutter to rotate and a second driving mechanism used for driving the cutter to move towards the wood are arranged on the upper portion of the supporting table; a fixing mechanism is arranged on the machine frame and comprises a first limiting plate and a second limiting plate which areconnected to the machine frame in a sliding manner, and a groove allowing the second limiting plate to be inserted is formed in the first limiting plate; and a dust-proof cover is arranged on the machine frame, a cavity is formed in the dust-proof cover, a negative pressure mechanism is arranged in the cavity, and dust collecting holes are formed in the side wall, facing the wood, of the dust-proof cover. According to the cutting device, the problem of unstable cutting fixation of the furniture wood in the prior art can be solved.

The invention relates to an intelligent special storage machine and a control method thereof. The storage machine comprises a cabinet body and cabinet doors hinged with the front end face of the cabinet body; a double security lock is cooperatively arranged between the cabinet doors and the cabinet body; a plurality of storage cases cooperating with safe boxes are arranged in the cabinet body; sensing units are arranged in coordination with the storage cases, the cabinet body and the cabinet doors; the sensing units and the double security lock are connected to a controller; the controller isconnected to a police alarm platform; and the double security lock needs two authorized workers to jointly work to doubly confirm whether the doors can be opened or not; operators confirm the situation of the storage machine more accurately by the sensing units, and can confirm the alarm situation or whether polices call out or not through the police alarm platform in first time. The intelligent special storage machine has the advantages that the security level is high; personnel is facilitated to perform checking and feedback; security is guaranteed by the double security lock; the police alarm platform can be contacted timely to recheck the alarm situation and confirms whether the polices call out or not; the constraint on the criminal behavior is high, and the response is fast; articlesput in the storage machine are high in safety; and all-round protection is fundamentally performed on the articles delivered by a user into the storage machine.

The invention provides anti-freezing viscous flame-retardant conductive polymer gel as well as a preparation method and application thereof. The conductive polymer gel is prepared from the following raw materials in percentage by mass: 20-60% of solvent, 3-20% of acrylamide monomer, 2-10% of imidazole monomer, 5-30% of conductive polymer monomer or salt thereof, 10-30% of ferric salt and 0.1-1% ofinitiator. The conductive polymer gel disclosed by the invention has anti-freezing viscosity and also has environment resistance, self-repairing performance and flame retardance, and the gel can be widely applied to the fields of electronic conductive adhesives, electrode materials, electronic wires, wearable devices and the like.

The invention relates to compound maltodextrin as well as a preparation method and application thereof. The compound maltodextrin is suitable for single-component granules such as radix rehmanniae preparata, radix rehmanniae, Chinese angelica and rhizoma chuanxiong or a compound granule containing the medicines to perform dry pressing and pelleting, or is applied to solid beverage, and belongs tothe field of composite raw materials. The compound maltodextrin is prepared from the following components in parts by weight: 0 to 30 parts of maltodextrin of which hydrolysis degree is smaller than 11, 0 to 30 parts of maltodextrin of which the hydrolysis degree is 11 to 15, 0 to 30 parts of maltodextrin of which hydrolysis degree is 16 to 20, 0 to 15 parts of lactase, 0 to 5 parts of beta-cyclodextrin and 0 to 5 parts of microcrystalline cellulose. According to the preparation method of the compound maltodextrin, disclosed by the invention, by adopting the three kinds of maltodextrin with different hydrolysis degrees, the content of reducing sugar in the mixed maltodextrin can be reduced, and thereby the problem that due to browning reaction of amino acid in the radix rehmanniae preparata, the radix rehmanniae, the Chinese angelica and the rhizoma chuanxiong, the prepared granules are charred black or have severe spots and granulation forming cannot be achieved is solved.

The invention provides a method for self-template and self-doping direct high temperature carbonization preparation of phosphorus rich mesoporous carbon. The phytate (i.e. cyclohexanol phosphate saltor inositol Hexaphosphate) acts as the precursor, and the high temperature molecules are recombined and crosslinked under inert gas protection so that the compound of porous carbon wrapped nanometer pyrophosphate particles is obtained. Acid pickling and washing are performed on the compound to remove the nano-template agent so that the phosphorus rich porous carbon is prepared through drying. Thecarbon material has the cellular mesoporous structure, the specific area is 400-1500m2/g, the aperture distribution is uniform within 3-20nm, the pore volume is within 0.6-1.7cm3/g and the phosphoruscontent is 2.3%-16%. The phosphorus rich mesoporous carbon is used as the supercapacitor electrode material and has the characteristics of high area specific capacitance, excellent rate performance and wide potential window (0-1.8V).