37results about How to "Increase the number of reusable" patented technology

The invention belongs to the technical field of membrane preparation and water purification and discloses a high-performance two-dimensional layered Ti3C2-MXene membrane, a preparation method thereof and an application of the Ti3C2-MXene membrane in water treatment. The method comprises steps as follows: (1), Ti3AlC2 powder and an HF solution are mixed, stirred for a reaction, centrifugally washed and dried, and Ti3C2 powder is obtained; (2), the Ti3C2 powder and a solvent are mixed, stirred for the reaction, washed and dried, and treated powder is obtained; (3), the treated powder is dissolved in the solvent and subjected to ultrasonic treatment and centrifugation, a liquid supernatant is taken and dried, and a two-dimensional nanosheet is obtained; (4), a solution is prepared from the two-dimensional nanosheet and deposited on a porous substrate with a nano self-assembly technology, and the high-performance two-dimensional layered Ti3C2-MXene membrane is obtained. The membrane has ultrahigh water flux, higher selectivity and good mechanical property and stability; the method is simple, low in energy consumption and cost, good in repeatability and wide in applicability.

The invention relates to detachable and reusable hydrophobic or super-hydrophobic micro-fluidic organ chips, which are constructed by using a hydrophobic or super-hydrophobic surface with low criticalsurface tension. Specifically, a heart chip, a liver chip, a brain chip, a tumor chip, a kidney chip, an intestinal chip, a skin chip, a fat chip, a blood vessel chip, a uterus chip, an eye chip, a nose chip, a bone chip, a periodontal chip, a pancreas islet chip, a spleen chip, a placenta chip, a lung chip, a muscle chip, a throat chip, a bone marrow chip, a diabetes chip and a multi-organ chipare constructed. The organ chips constructed by the method are detachable and can be repeatedly used, so that the application cost of the micro-fluidic organ chips is greatly reduced.

The invention discloses a method for preparing a copper-based catalyst, belonging to the technical field of catalysts. The method comprises the following steps: dissolving copper sulfate in hot water, thereby obtaining a copper sulfate solution; adding a sodium carbonate solution into the copper sulfate solution, reacting, filtering, collecting a precipitate, and washing the precipitate with water until inspection with barium chloride proves that no sulfate radical exists in the precipitate solution; and adding zinc oxide into the aqueous solution of the precipitate, filtering, centrifugally separating the obtained filtrate, and drying. Compared with a commercially available basic cupric carbonate catalyst at present, the copper-based catalyst prepared by the invention has the advantages of smaller consumption, higher catalytic efficiency and higher repeated utilization frequency.

The invention discloses flower arrangement mud special for cherry flower and a production process thereof. The flower arrangement mud comprises the following components according to parts by weight: 50-80 parts of phenolic plastic, 40-60 parts of clay powder, 15-30 parts of urea, 10-20 parts of ammonium dihydrogen phosphate, 15-25 parts of EVA (ethylene vinyl acetate), 10-15 parts of a water absorber, 10-20 parts of a degrading agent, 1-3 parts of silicone oil and deionized water. The invention has the advantages that elasticity of the flower arrangement mud is optimized through synergy of the components so that the reusable times of the flower arrangement mud can be greatly increased, up to higher than 10; in addition, in the production process of the flower arrangement mud, annealing treatment also plays a key role for the life of the flower arrangement mud; moreover, the flower arrangement mud has good degrading capacity, meets the concept of sustainable development, and has a promising market application prospect.

The invention relates to a non-Newtonian fluid anti-fall mobile phone case, belonging to the field of daily necessities. The non-Newtonian fluid anti-fall mobile phone case is composed of elastic waterproof transparent bag, mobile phone case, thin tube, nozzle, pressure plate, push device, electronic chip, data cable, charging pal plug and charging pal. When the mobile phone drops accidentally, the protective film will pop up quickly to greatly buffer the impact produced by the possible impact, to protect the security of the mobile phone screen to the maximum extent, and to solve the troublesthat the mobile phone screen is easy to be broken for people over the years.

The invention discloses a normal temperature fast bonderite and producing method of metal plastic deformation, which is characterized by the following: the bonderite is composed of phosphoric acid, methyl ethyl ketone or acetone, eldopaque, manganese dihydrogen phosphate, calcium nitrate, zinc nitrate and water; the method comprises the following steps: mixing, emulsifying, restirring; the raw materials of bonderite is at a low price, which can be used at normal temperature. The method is easy to product, which reduces the costs of conversion.

The invention discloses an adsorbent for treating heavy metal wastewater, as well as a preparation method and application thereof. The adsorbent is prepared from the following raw materials in parts by weight: 31-39 parts of red jade soil, 1-5 parts of thioglycollic acid, 8-16 parts of acrylamide and 23-31 parts of polyethylene glycol. The adsorbent disclosed by the invention is prepared according to the steps of mixing and grinding the red jade soil and acrylamide, adding polyethylene glycol and performing ultrasonic treatment, and dropwise adding thioglycollic acid and performing microwave treatment. The adsorbent is very high in absorbing efficiency for heavy metal, can be repeatedly used for more than 100 times and has an excellent treating function for heavy metal pollution of water sources. The adsorbent has the advantages of mild reaction conditions, few raw materials, extensive raw material resources, simple process operation, low production cost, economic and environment-friendly effects, high yield and suitability for industrial production. The adsorbent disclosed by the invention has a removing rate for heavy metal ions in high-concentration wastewater above 98% and can be widely applied to the treatment for heavy metal wastewater.

The invention discloses a composite adsorbent for efficiently removing mixed pollutants in wastewater and a preparation method of the composite adsorbent. The preparation method comprises the following steps: firstly, preparing nano flaky zinc oxide microspheres, and then preparing a metal organic framework Zn-MOF-74 by taking the nano flaky zinc oxide microspheres as a sacrificial template, so asto obtain a composite material ZnO@Zn-MOF-74 of nano zinc oxide and the metal organic framework, namely the composite adsorbent. The preparation process is simple, the cost is relatively low, and theobtained composite adsorbent has relatively high removal rate on antibiotics (tetracycline) and heavy metal ions (copper ions) in wastewater.

The invention relates to a sterile air-permeable sealing film structure for a microbe culture bottle. The structure can be flexibly regulated and adapted according to size specifications of different culture bottles; the upper part of an adapted culture bottle is provided with a bottle neck; a plastic film is bound by a binding tape or rubber band at the bottle neck of the culture bottle; a bottle neck seal is correspondingly placed at the opening of the bottle neck; the central position of the bottle neck seal is provided with a sealing film air-permeable window structure; the sealing film air-permeable window structure comprises a bottom layer film and a top layer film; a filtering medium is arranged between the bottom layer film and the top layer film; and the central positions of the upper and lower surfaces of the filtering medium are fixedly connected with the bottom layer film and the top layer film through center dispensing. The sealing structure can effectively filter and obstruct microbes in the air, and simultaneously can ensure the supply of the air in the culture bottle. Besides, the sealing structure can effectively prevent the filtering medium from producing a leak due to dislocation or folding deformation in the culture process, thereby ensuring the culture safety. The sealing structure is simple and convenient to use, hardly occupies the volume inside / outside the bottle, and improves the culture efficiency.

The invention discloses a method for preparing a composite material pressure container with a PbSn alloy lining by plasma spray, belonging to the material field. By the invention, the problem that the conventional composite material pressure containers have excessive weight is solved. The method comprises the following steps of: firstly, preparing a carbon fiber enwinding composite material enwinding layer provided with epoxy resin by immersion on a core module according with the pressure container in shape; secondly, preparing a resin transition layer doped with metal powders on the inner wall of the carbon fiber enwinding composite material enwinding layer; thirdly, curing the prepared fiber enwinding layer and the resin transition layer doped with the metal powders; and fourthly, preparing the lining layer of the pressure container on the inner wall of the cured resin transition layer in a plasma spray mode. The method is used for preparing light pressure containers.

The invention discloses a building template. The building template comprises a surface layer and a reinforcing layer, wherein the reinforcing layer is fixedly connected to the bottom surface of the surface layer; the surface layer is made of fiber reinforced plastic; the reinforcing layer comprises a mouth-shaped reinforcing edge and reinforcing ribs which are positioned inside the reinforcing edge and are crossed longitudinally and transversely, wherein the reinforcing ribs are fixedly connected with the reinforcing edge; and the reinforcing edge and the reinforcing ribs are made of fiber reinforced plastic. The building template is low in cost, has alkali corrosion resistance, and can be recycled.

The invention discloses a UV special release coating for a PET or BOPP film and a preparation method thereof. The release coating is prepared from the following components in parts by weight: ultraviolet curing resin is prepared by mixing modified epoxy organic silicon acrylic resin and pure acrylic resin. Through polymerization reaction among the components, a coating substrate is formed to adhere to a film; the reactive diluent enhances the crosslinking degree of the release coating so as to improve the flexibility and adhesive force of the coating, and the assistant improves the leveling property of the coating, so that the coating matrix has a flat surface, and the aluminum layer is completely stripped from the film. The durable frequency of the coating on the film is increased by 2-3times, the coating frequency is reduced, the production efficiency is improved, and the problem of low production efficiency of the vacuum aluminized paperboard due to the fact that the performance ofthe existing release coating is not suitable is solved.

The invention discloses a vermiculite-MXene composite membrane and a preparation method and application thereof. The vermiculite-MXene composite membrane comprises a porous base membrane and a vermiculite-MXene composite layer which are laminated and attached, and the vermiculite-MXene composite layer comprises a vermiculite nanosheet and an MXene nanosheet. The preparation method of the vermiculite-MXene composite membrane comprises the following steps: dispersing vermiculite nanosheets and MXene nanosheets in a solvent to prepare a coating liquid, then coating the surface of a porous base membrane with the coating liquid, and drying to obtain the vermiculite-MXene composite membrane. The vermiculite-MXene composite membrane has ultrahigh water flux, relatively high selectivity, good mechanical property and stability and high reutilization frequency, and the preparation method of the vermiculite-MXene composite membrane is simple, low in energy consumption, low in cost and wide in applicability.

The invention discloses a clamping type composite aluminum alloy building template system. The clamping type composite aluminum alloy building template system comprises a clamping part and at least two composite templates, wherein each composite template comprises a surface plate, a partition plate and side ribs connected to the surface plate, the partition plate, the surface plate and the side ribs are closed to define a sealed hollow area, a preset number of reinforcing ribs are arranged between the surface plate and the partition plate; the inner sides of the side ribs are provided with horizontal bulged strips; the clamping part is U-shaped, and comprises a locking mechanism and clamping sides which are symmetrical left and right, and the inner sides of the clamping sides are providedwith grooves which are matched with the bulged strips; and after the bulged strips are clamped into the grooves, the composite templates are fixed by the locking mechanism. The clamping type compositealuminum alloy building template system provided by the invention improves repeated utilization times of the aluminum templates while improving integral torsional stiffness and strength of the aluminum templates, and reduces a rejection rate of the aluminum templates.

The invention discloses a heavy metal adsorbent used for waste water treatment and a preparation method and application thereof. The heavy metal adsorbent is composed of the following raw materials, by weight, of 31-39 parts of kaolin, 1-5 parts of thioglycollic acid, 8-16 parts of acrylamide and 23-31 parts of ethanediol. The preparation method of the heavy metal ion adsorbent comprises the steps that the kaolin is mixed and grinded with the acrylamide, then the ethanediol is added, ultrasonic treatment is conducted, the thioglycollic acid is added dropwise, and microwave treatment is conducted. The prepared adsorbent has high adsorption efficiency on heavy metals and can be reused 100 times or above, and a good governance function on water heavy metal pollution is achieved. According to the heavy metal adsorbent used for the waste water treatment and the preparation method, the reaction condition is mild, the amount of the raw materials are fewer, and the materials are acquired widely, process operation is easy, manufacturing cost is low, economy, environmental protection and high yield are achieved, and the heavy metal adsorbent is suitable for industrialized production. The removal rate of the adsorbent on heavy metal ions in high-concentration waste water can reach up to 98%, and the adsorbent can be widely applied to the treatment of the heavy metal waste water.

The invention provides a device and a method for a non-destructive test of the three-dimensional anisotropic thermal conductivity of materials, belonging to the technical field of material thermal conductivity tests. The device comprises a third-harmonic method independent sensor and an electric signal acquisition and processing module, wherein the third-harmonic independent sensor comprises wear-resistant insulating protective films, linear heating detector modules, current lead pieces and detecting voltage lead pieces; the current lead pieces and the voltage lead pieces are respectively soldered on the four bonding pads at the tail ends of linear heating detectors, and the wear-resistant insulating protective films covers the two sides of a micro linear heating detector; the electric signal acquisition and processing module comprises a signal generator, a microcomputer control and data acquisition system, a bridge module circuit, a lock-in amplifier, a high-precision direct current (DC) power supply, a resistor, a current lead terminal and a voltage lead terminal, and is used for amplifying electric signals generated by the sensor. The device has the advantages of being capable of realizing high-accuracy measurement of the three-dimensional anisotropic thermal conductivity of the materials, and being non-destructive in material test and high in reusability.

The invention discloses a graphene compound material and a production process thereof and relates to the technical field of compound materials. The graphene compound material is characterized by comprising a silicon dioxide aerogel layer and graphene composite fabrics arranged on both sides of the silicon dioxide aerogel layer, wherein the graphene composite fabrics are woven from warps and wefts,the wefts are blended from graphene fiber, ultra-high molecular weight polyethylene fiber, aromatic polyamide fiber and carbon fiber, and the warps are blended from graphene fiber, ultra-high molecular weight polyethylene fiber, aromatic polyamide fiber, carbon fiber, basalt fiber, ceramic fiber, stainless steel fiber and polyester fiber. The graphene compound material has the advantages of beingexcellent in mechanical performance and achieving 2000 reusable times.

The invention provides an adsorbent for processing heavy metal wastewater and a heavy metal wastewater processing method. The heavy metal wastewater processing method comprises the following steps of step A'. adding a diatom shell adsorbent into a heavy metal solution, uniformly stirring and mixing or vibrating; step B'. carrying out centrifugal separation on the diatom shell adsorbent or precipitating the to-be-standing diatom shell adsorbent, and eliminating upper clear solution; step C'. adding the processed diatom shell adsorbent after processing into a HCl solution, stirring uniformly so as to fully elute heavy metal ions, and recycling the heavy metal by using an eluant; and step D'. adding the processed diatom shell into a NaOH solution, and neutralizing an activating diatom shell adsorbent to enable the final PH range of the solution to be 7-7.5. Compared with the prior art, the adsorbent and the heavy metal wastewater processing method provided by the invention have the obvious advantages that the processing cost is low, the technology is simple, the secondary pollution does not exist, the adsorbent can be reused for multiple times, and the heavy metal is easy to recycle; meanwhile, the capability of the processing low concentration heavy metal wastewater on the diatom shell heavy metal adsorbent is strong.

The invention discloses an adsorbent for heavy metal waste water treatment and a preparation method and an application thereof. The adsorbent is composed of the following raw materials in parts by weight: 31-39 parts of kaolin, 1-5 parts of mercaptoacetic acid, 8-16 parts of acrylamide and 23-31 parts of ethanol. The preparation method comprises the following steps: mixing and grinding kaolin and acrylamide; then adding ethanol for ultrasonic treatment; and dropwise adding mercaptoacetic acid for micro-wave treatment. The adsorbent is extremely high in adsorption efficiency, can be repeatedly used more than 100 times, and has a good treatment effect on heavy metal pollution of a water source. The adsorbent disclosed by the invention is mild in reaction condition, few in raw material, wide in material, simple in process operation, low in production cost, economical, environmental-friendly, high in yield and suitable for industrial production. The removal rate of the adsorbent disclosed by the invention on heavy metal ions in high-concentration waste water can reach 98% above, and the adsorbent can be widely applied to treating heavy metal waste water.

The invention discloses a heavy-metal adsorbent for wastewater treatment as well as a preparation method and application thereof. The adsorbent is prepared from the following raw materials in parts by weight: 31 to 39 parts of kaolin, 1 to 5 parts of thioglycollic acid, 8 to 16 parts of acrylamide and 23 to 31 parts of polyethylene glycol. The heavy-metal adsorbent, which is provided by the invention and is obtained through steps of mixing the kaolin with the acrylamide, grinding an obtained first mixture, then adding the polyethylene glycol into the ground first mixture, carrying out ultrasonic treatment on an obtained second mixture, dropwise adding the thioglycollic acid into the second mixture subjected to the ultrasonic treatment, carrying out microwave treatment on an obtained third mixture, and the like, is extremely high in the adsorption efficiency to a heavy metal, moreover, can be repeatedly used for 100 times or above, and has a quite good governance effect on the heavy-metal pollution of a water source. The heavy-metal adsorbent for the wastewater treatment and the preparation method thereof are mild in reaction condition, few in raw materials, further wide in material obtaining, simple in process operation, low in production cost and high in yield, are economical and environment-friendly, and are suitable for industrialized production. The absorbent provided by the invention has a removal rate, which can reach 98 percent or above, to a heavy metal ion in high-concentration wastewater, and can be widely applied to the treatment of heavy-metal wastewater.

This invention discloses a centrifugal roller able to endure high temperature and brushing, which comprises the roller blank parent, protective layer on the outskirt of the parent. This invention also discloses a process method, which comprises the following steps: adopting general steel material to get roller parent; wielding the roller circle by use of manganese and steel wielding wire and carbon dioxide automatic wielding machine; drilling cool water into the inner hole of the roller to form the centrifugal manganese steel protective layer; then processing the centrifugal roller to get the needed centrifugal roller with protective layer.

The invention provides a combined bleaching agent for wood flakes, its main components include 35wt% hydrogen peroxide solution, sodium metasilicate pentahydrate and polyethylene glycol, and the weight ratio of each component in 1000ml solution is: : 150-250g of 35wt% hydrogen peroxide solution, 30-50g sodium metasilicate pentahydrate and 10-20g polyethylene glycol; in the wood flake bleaching process of the present invention, there is a self-compensating filling design for the loss of wood component water-soluble substances, That is, sodium metasilicate pentahydrate and polyethylene glycol can beneficially fill the loss of water-soluble substances in pigments and lignin in oxidatively decomposed wood flakes, and easily form emulsions in aqueous solutions, increasing the viscosity and surface of the combined bleach solution. Tension, enhance the adsorption of wood flakes, so as to prevent the wood flakes from being loose and easy to crack and break after bleaching and drying, so that the bleached wood flakes become whiter, brighter, and the material color is uniform, and the material strength and flexibility are maintained.

The invention discloses a ball seat capable of achieving full-bore pressure transmission after shearing. The ball seat comprises an upper connector, a ball seat outer sleeve, a first sealing ring, a sectioning ball seat, a second sealing ring, a fixing screw, an elastic piece, a ball seat outer cylinder, a shearing pin, a shearing mandrel, a third sealing ring, a fourth sealing ring, a fifth sealing ring and a lower connector. The pressure transmission ball seat is connected to a setting and releasing tool assembly of a sand prevention service pipe column, a pressure transmission hole is opened through ball injection pressurization, the interior of the pipe column is full-bore after the ball seat is sheared, and smooth passing of a follow-up setting ball is guaranteed; the bearing parts of the sectioning ball seats are rigid parts, so that the ball seats are stressed more reasonably, the sectioning ball seats are not connected with the shearing mandrel, and the sectioning ball seats can be smoothly separated by adopting the elastic sheets to restore and expand; a sealing ring is installed on the lower portion of the shearing mandrel, the outer wall of the shearing mandrel is prevented from being eroded by liquid flow after shearing, and the number of times of repeated use is increased.

The invention discloses a cold heading forming device of a thin-wall hollow positioning pin and a forming method of the cold heating forming device. The cold heating forming device comprises a cold heading machine and a powder removing box and further comprises a steel tube, a dust removing sleeve, a dust collecting tube and a metal rod, wherein the powder removing box is assembled at the feeding end of the cold heading machine through bolts, and the top in the powder removing box is divided into a brushing chamber through steel plate welding; the metal rod is located at the bottom in the brushing chamber, the dust collecting tube is arranged at the top in the brushing chamber, dust removing sleeves are sequentially arranged in the brushing chamber, and one end of each dust removing sleeve is provided with a connecting plug. The surface of a forging blank of the thin-wall hollow positioning pin can be pretreated, the forming effect of the forging material during cold heading machining is better, metal dust and adhered foreign matter generated by wire drawing on the surface of a forging stock wire rod can be effectively cleaned and brushed, and therefore, when the forging blank is subjected to cold heading, the forging blank is guaranteed to not cause large pollution to lubricating oil, the number of reutilization times of the lubricating oil is greatly increased, a good saving effect is achieved, and the processing cost is greatly reduced.