562results about How to "Moderate intensity" patented technology

The invention discloses a desert control method of a chemical sand-fixing greening technology based on organic composite materials, and the desert control method is characterized in that hydrophilic polyurethane resin curing agent solution is sprayed on a sand or soil layer of greening objects for sowing the vegetation for forming a porous fixed sand layer. The fixed sand layer formed by the method has appropriate thickness and strength, good durability, good anti-freeze and melt properties and functions of water retention, thermal insulation, ventilation, vegetation and the like. According to the method of the invention, the stable and effective solidifying can be carried out on sand even under the specific desert environments of no abundant groundwater sources and strong wind erosion, and the purpose of vegetation greening can be also realized. The method has large-scale construction properties and good economic performances, thereby being applicable to the needs of large-scale chemical sand fixing and vegetation greening of the vast desert and realizing the plant greening function and the ecological restoration and the control of desertified land.

An optical fiber sensor that can detect a liquid level or detect a property of liquid with high reliability even under a frequently vibrational environment. The optical fiber sensor includes an optical fiber that includes a core having an area where a grating is formed and a clad, and is disposed so that at least a part of the area with the grating is immersed in liquid, a light source for making light incident to the optical fiber so that a cladding mode light having a wavelength band is occurred by the grating, and a light receiving unit for detecting the intensity of light which is incident from the light source to the optical fiber and transmitted through the grating.

The invention discloses a low-cost steel plate for a building structure and a manufacturing method thereof. The steel plate comprises the following chemical components: C accounts for 0.14 percent to 0.17 percent, Si accounts for 0.20 percent to 0.50 percent, Mn accounts for 1.30 percent to 1.50 percent, P is equal to or less than 0.012 percent, S is equal to or less than 0.005 percent, Alt accounts for 0.020 percent to 0.060 percent, and the balances are Fe and unavoidable foreign impurities. (1) No noble metal elements such as Nb, V, Ti, Ni, Cr, Mo and the like, are added in the steel, the requirement of Q345GJ strength level is met completely though the chemical components C-Si-Mn-Al, and the cost is low; (2) the steel is purer, P is equal to or less than 0.012 percent, and S is equal to or less than 0.005 percent; (3) the impact toughness is good at the temperature of minus 40 DEG C, and the Charpy impact energy of a V-shaped notch is equal to or higher than 80 J; (4) the earthquake resistance is good, and the actual yield ratio is respectively smaller than 0.78; and (5) the lamellar tearing resistance is excellent, and the actual Z-direction section shrinkage ratio in the total-thickness direction is equal to or higher than 38 percent. The hot-rolling Q345GJEZ35 steel plate used for the building structure and provided with thickness of 20-90 mm can be produced, and the steel plate and the manufacturing method can be applied to the manufacture of the steel structure of the high-rise building, have good comprehensive performance and simple production process, can realize the batch production and have low cost.

The invention relates to a water-bearing capsule and a preparation method thereof. The water-bearing capsule consists of a water-based capsule core and a solid capsule shell wrapping the water-based capsule core, wherein the solid capsule shell consists of a hydrophobic membrane layer, a powder wrapping layer and a modified wax layer from outside in sequentially, and the strength of the solid capsule shell reaches 0.5-2.2kg. The water-bearing capsule can significantly reduce multiple harmful ingredients in smoke, reduces harms of a cigarette, and has the efficacy of improving a cigarette smoking moist feeling; the characteristic odor type can be endowed to the cigarette; in addition, the solid capsule shell of the water-bearing capsule is great in strength and difficult to break, so that stable water holding and quality guaranteeing effects of the cigarette are ensured; and the above benefits have very positive significance in improving the cigarette quality.

The invention discloses a gallium and indium doped single crystal silicon material for a solar battery, which consists of the following components according to atom number per cubic centimeter of the single crystal silicon material: 1.0X10<14> to 1.0X10<18> gallium, 5.0X10<12> to 5.0x10<16> indium and the balance of single crystal silicon. The invention also discloses a method for preparing the gallium and indium doped single crystal silicon material for the solar battery, which is implemented by the following steps of: dismantling a furnace by using a regular method, cleaning a hearth and assembling the furnace; vacuumizing the inside of a single crystal furnace and detecting the leakage of the single crystal furnace by using a regular method; pressuring materials and smelting the materials; stabilizing the melt; seeding crystals; performing shouldering; performing shoulder rotation; performing isodiametric growth; performing ending and cooling the obtained product; and stopping the furnace. The gallium and indium doped single crystal silicon material for the solar battery has the advantages of high conversion efficiency, low light attenuation, low oxide content in the single crystal silicon and uniform radial distribution in a single crystal silicon rod; and the preparation method of the invention effectively controls the thermal conversion of silicon melt and grows the high-quality gallium and indium doped single crystal silicon material for the solar battery.

The present invention relates to one kind of suspended microbial carrier for biological waste water treatment. The mixture of rubber powder in 35-70 wt%, resin in 25-55 wt%, chemical foaming agent in 0.1-5 wt% and specific weight regulating material in 0-10 wt% is hot extruded to form shaped body of 0.90-1.1 g/cu cm specific weight and with great amount of closed bubbles. The suspended microbial carrier has great buoyancy, and can maintain suspension state in treated water after microbe attachment. In addition, nutritious matter may be added into the carrier material for promoting the colonization and growth of microbe.

The invention provides a preparation method of spun-laced regenerated leather for an automotive interior surface. The preparation method comprises the following specific steps: (1) loosening and mixing fibers; (2) forming a net; (3) spreading the net; (4) pre-wetting; (5) spun-lacing; (6) drying; (7) carrying out vacuum plastic-absorption and molding. The requirements on material molding properties and mechanical properties by the automotive interior surface and industrial standards are sufficiently considered at the beginning of designing, and raw material ratios and a production process are reasonably optimized, so that collaboration of design, preparation and molding machining of a composite material is realized. Compared with traditional automotive interior surfaces including polyvinyl chloride, polyurethane and the like, the prepared automotive interior surface has the advantages of greenness and environmental friendliness, no odor, excellent elasticity, moderate strength, comfortable hand feeling, high cost performance and the like and is suitable for large-scale industrial production.

The invention relates to a submerged-arc welding flux for low-alloy-steel narrow-gap welding and a preparation method thereof. A high-alkalinity MgO-CaO-Al2O3-CaF slag system is adopted, and the submerged-arc welding flux is mainly made from raw materials including calcium fluoride, aluminum oxide, wollastonite, marbles, silicon iron and ferromanganese iron. The preparation method of the submerged-arc welding flux mainly comprises the steps of 1 dry mixing in proportion, 2 impurity removal, 3 bonding agent adding for wet mixing and 4 baking and high-temperature sintering. The alkalinity of the welding flux ranges from 2.0 to 3.0, low-hydrogen and low-oxygen deposited metal containing ultra low P and S impurity contents can be obtained through welding, and accordingly it can be ensured that the deposited metal has excellent comprehensive mechanical property. When the submerged-arc welding flux is matched and welded with a low-purity low-alloy steel welding wire, S and P are not added into the deposited metal by adopting the welding flux. The submerged-arc welding flux has excellent alloy transition capacity.

The invention relates to a sand fixation method of a green degradable inorganic sand fixation material, belonging to the field of environmental protection. The inorganic sand fixation material is prepared by mixing calcium silicate slag, fly ash, industrial mineral slag powder, gypsum, cement and solid aggregate used as main raw materials. The sand fixation material and water are mixed to prepare a sand fixation slurry; and the sand fixation slurry is sprayed or spread on sand soil to form a solidifying layer on the sand soil surface. The solidifying layer can satisfy the mechanical property requirements for fixing traveling dunes. After the sand fixation layer is laid, the sand fixation region is subjected to soil improvement and plant growth, so that the sand fixation layer can be degraded into substances which are nontoxic and harmless to the environment within 1-5 years, thereby obtaining the soil components and lowering the influence of artificial buildings on the desert ecological environment. After the sand fixation material reacts with water, no toxic component resides, and thus, the sand fixation material has the advantages of high safety and no secondary pollution. Besides, abundant industrial solid wastes are doped to lower the influence of solid waste piling on the environment; and the method has the advantages of low cost, simple construction technique and high practicality, and is applicable to related fields of desertification control and the like.

The invention relates to a synthetic method of cubic boron nitride; the method adopts the nitride of alkali metals and alkaline earth metals and the mixture of magnesium aluminum alloy as a catalyst and uses the hexagonal boron nitride as material; the nitride, the magnesium aluminum alloy and the hexagonal boron nitride are evenly mixed according to the mass ratio of 7 to 10 : 1 to 4 : 100 and the single crystal of the cubic boron nitride with the amber color from semitransparent to transparent is synthesized according to the synthetic technique processes of the invention. The method overcomes the defects that the nitride and the metal catalyst material are used separately, and leads the advantages of the two catalyst materials to have good combination; the synthesized cubic boron nitride crystal has the advantages of amber color, regular shape, proper intensity, synthetic temperature, wide pressure range and high yield, etc.

The invention relates to a synthesis technique of a high-grade self-sharpening polycrystalline diamond, which comprises the following steps: metering and mixing the raw materials for synthesizing the diamond according to percentage by mass, granulating, and pressing into a synthetic stick; putting the synthetic stick into a synthesis block, and drying in a vacuum drying oven at constant temperature for later use, wherein the synthesis block is synthesized at high temperature under superhigh pressure with a cubic press; and taking out the synthetic stick, carrying out after-treatment to obtain a self-sharpening polycrystalline diamond, carrying out in-situ polymerization by a sol-gel process, and applying a zirconia coating on the diamond surface to form the high-grade self-sharpening polycrystalline diamond. The product has the advantages of favorable impact toughness, favorable thermal stability and favorable comprehensive properties, can obviously enhance the holding force of the self-sharpening polycrystalline diamond in a grinding tool, can keep the self-sharpness in the grinding process, and finally, is beneficial to prolonging the service life of th grinding tool and enhancing the machining efficiency of the grinding tool.

The invention relates to a semi-flexible anti-rut pavement material which comprises the following components in percentage by weight: 65-88% of big-void cement-base mixture and 12-35% of flexible grouting material. The big-void cement-base mixture comprises 1 part of cement, 4-6 parts of coarse aggregate, 0.4-1.0 part of fine aggregate, 0.1-0.3 part of water and 0-0.006 part of water reducing agent. The flexible grouting material comprises 1 part of cement, 0.65-1 part of modified emulsified asphalt, 0.1-0.35 part of water-based epoxy resin emulsion, 0-0.03 part of ground tire, 0.0025-0.007 part of water reducing agent, 0.05-0.2 part of expanding agent and 0.05-0.15 part of water. The semi-flexible anti-rut pavement material has the characteristics of high rut resistance, favorable flexibility and toughness, no seam, fewer cracks, low carbon, environmental protection and the like, can be constructed at room temperature, and is suitable for road rut treatment.

The invention discloses a nerve conduit and a preparation method thereof. The nerve conduit comprises an inner layer, a transition layer, an outer layer and at least one cavity used for storing a bioactive factor solution, wherein the outer surface of the inner layer is sequentially coated with the transition layer and the outer layer; the cavity is positioned between the inner surface of the outer layer and the outer surface of the transition layer and/or between the outer surface of the inner layer and the inner surface of the transition layer; the inner layer is a hydrophilic cytoskeleton layer made by adopting an electrostatic spinning method; and the outer layer is a hydrophobic nerve conduit scaffold layer made by adopting the electrostatic spinning method. The nerve conduit can be used for loading bioactive factors before an operation in a required mode, such as injection, soaking and the like due to the miniature cavity, so that the production quality of the product is easy to control, the survival rate of the bioactive factor can be greatly improved, the nerve regeneration can be promoted in high efficiency, and the nerve repairing effect can be reinforced.

The invention provides a ZrO2-based all-ceramic dental implant and a preparation method thereof. The method comprises steps as follows: ZrO2 nano powder with stable doping elements is obtained from soluble zirconium salt, strong base and a solution containing doping elements with a nano powder preparation technology; the ZrO2 nano powder is mixed with photosensitive resin, and ceramic-photosensitive resin prefabricated slurry is obtained; the ceramic-photosensitive resin prefabricated slurry is printed with an additive manufacturing technology according to a true tooth simulation model, a ZrO2 ceramic biscuit is obtained and subjected to gel removal and sintering, and a ZrO2 ceramic matrix is obtained; finally, ion penetration, sintering and mineralization are performed, and the ZrO2-based all-ceramic dental implant is obtained. The dental implant is controllable in structure and highly simulated with the additive manufacturing technology; in combination with ion penetration, sintering and mineralization treatment, synostosis of the dental implant and alveolar bone is advantageously improved; chemical ingredients of the dental implant are in gradient distribution on the whole, and the ZrO2-based all-ceramic dental implant has moderate strength, hardness, toughness and bioactivity.

The invention discloses a high-toughness hot-rolled 530 MPa-grade automobile cold stamping bridge shell steel plate and a manufacturing method thereof. The high-toughness hot-rolled 530 MPa-grade automobile cold stamping bridge shell steel plate comprises the following components of C, S, Mn, P, S, Al, Nb, Ti and the balance Fe and impurities; the content of the elements has to meet the followingrelationship at the same time, Nb+Ti is greater than or equal to 0.025% and is less than or equal to 0.045%, CEV is equal to C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15 and is less than or equal to 0.45%; the manufacturing method is characterized in that V is not added to the component design, Mn content is properly adjusted, a certain amount of Si, Nb, Ti and the like are added, molten iron pretreatment, molten steel smelting, continuous casting, cooling, heating, rolling, cooling, finishing, inspection and the like are carried out, so that the surface quality and strength of the steel meet the cold stamping and welding processing processes of the bridge shell steel; the yield strength ReL of the steel plate is greater than or equal to 375 MPa, the tensile strength Rm is greater than or equal to 530 MPa, the elongation percentage A after fracture is greater than or equal to 26%, the impact power KV2 at 0 DEG C is greater than or equal to 180 J, the grain size is 8-10 grades, the strip-shaped gradeis 1-3 grades, and cold stamping and forming of 10-16 mm specifications can be realized.

The invention relates to the field of medicinal macromolecular materials, in particular to the application of a tri-block copolymer in the preparation of a medical anti-blocking material, aiming to provide a new choice for using the medical anti-blocking material in the field. A technical scheme of the invention is to provide the application of the polycaprolactone-polyethyleneglycol- polycaprolactone (PCL-PEG-PCL) tri-block copolymer in the preparation of the medical anti-blocking material, wherein the PCL-PEG-PCL copolymer has a molecular weight ranging from 1,500 to 8,000, the ratio of themolecular weight of the PEG chain segment to that of the PCL chain segment ranges from 0.2 to 2.5. The copolymer can be dissolved in water to form a solution and can form when a certain concentrationis achieved. Experiments show that the hydrogel of the PCL-PEG-PCL block copolymer can effectively prevent post-operation adhesion, thereby the invention provides a new choice for this field.

The invention discloses a reverse thermal bonding technology for making micro and nano fluid system with controllable size. The technology comprises steps of: coating a pretreated grating template with a layer of SU 8 photoresist; copying a graph to the SU-8 photoresist through a reverse embossing technology; then tearing off the cured SU-8 photoresist by using an adhesive UV tape according to different adhesion among interfaces, so as to successfully transfer the graph to a flexible UV adhesive tape; spinning a thin layer of SU-8 photoresist on another Si sheet to form a sealing layer Si substrate; covering the prepared SU-8 adhesive graphic structure layer on the Si substrate; and preparing the micro and nano fluid system through the reverse bonding technology. The invention combines an embossing technology and a bonding technology together, and has advantages of simple operation, no requirement on high temperature and high pressure, controllable channel size and no clogging; and a low manufacturing cost is conducive to mass production.