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 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 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 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 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 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 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 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.