62results about How to "Strong inertia" patented technology

The invention relates to a wave power piezoelectric generating device which comprises a wave energy collector and more than one piezoelectric generating units, wherein the piezoelectric generating units are arranged on the wave energy collector; the wave energy collector comprises a U-shaped supporting floating body and a floating body, wherein the opening of the supporting floating body is connected through a rigid connecting rod; a supporting floating body framework is fixedly arranged on the supporting floating body, four support rods are fixedly arranged on the supporting floating body framework, and a generator soleplate, a generator round wall and a generator top plate are sequentially fixedly arranged at the tops of the four support rods through a generator frame; a floating body framework is arranged on the floating body, the floating body framework is rigidly connected with a driving shaft, and the driving shaft sequentially penetrates through the generator soleplate and the generator top plate; support posts sequentially penetrating through the generator soleplate and the generator top plate are fixedly arranged on the floating body framework, and the tops of the support posts are fixedly connected through connecting rods; and each piezoelectric generating unit comprises a plurality of piezoelectric vibrators and scribing sheets, wherein each piezoelectric vibrator comprises a middle layer and two piezoelectric sheets. The invention can realize sympathetic vibration under various incoming wave conditions and obtain higher wave energy conversion efficiency and output electrical energy.

The invention discloses ceramic aggregate biological filler and a preparation method thereof. The filler uses coal ash and sludge as main raw materials, clay as binder, and aluminum sulfate octadeca hydrate or hydrogen peroxide solution as foaming agent, and is prepared by mixing the raw materials, the binder, the foaming agent and water, granulating and sintering at high temperature. Compared with the prior art, the main raw materials of the invention are solid waste materials, thereby reducing pollution of coal ash and sludge to environment and treating waste materials by waste materials; the coal ash can be directly used without complicated pretreatment; organic substance and inorganic substance in the sludge are used to reduce resource waste; hole structure of sludge ceramic aggregate is improved, the ceramic aggregate has loose and porous structure for enriching a great amount of microorganism in sewage, thereby being suitable for biological filler can realizing sewage treatment with high efficiency and low cost; the invention has simple manufacturing process, low cost, strong adaptability, and good economic benefit and social benefit.

The invention relates to eutectoid electrolyte and a secondary zinc battery using the eutectoid electrolyte. The eutectoid electrolyte contains an acylamino-contained compound and an ionizable organicmetal salt. The eutectoid electrolyte provided by the invention has the characteristics of low viscosity, high ionic conductivity, wide electrochemical window, low cost and insensitiveness to water and air; meanwhile, reversibility and stability of electrochemical deposition / dissolution can be remarkably improved by an interface protecting layer formed by in-situ decomposition of organic anions,so that the problem of poor cycle life of the secondary zinc battery is effectively solved. The secondary zinc battery using the eutectoid electrolyte has the advantages of good charge-discharge cycleperformance, greenness, environmental protection and low price.

The invention discloses an aluminum-based material. Aluminum nitride, zirconium oxide and tantalum oxide particles are uniformly distributed in an aluminum alloy substrate, MoS2, Al2O3 and SiC are distributed on part of a surface layer of the aluminum alloy substrate, the hardness of aluminum nitride, zirconium oxide and tantalum oxide is high, the hardness and wear-resisting performance of the substrate are significantly improved, and fluorinated graphite powder can improve the anti-friction property. The surface of the substrate is coated with a Mn-Cr coating in a fusion mode to effectivelyimprove the wear-resisting performance and corrosion resistance of the alloy surface. The dispersion strengthening of strengthening phases of Si, Cu, Cr, Ni, Hf, Fe, Ag, Ca, Li, Ba and other elementsin the alloy improves the mechanical properties of the material. A preparation method enables mixed powder to be located in the center of a master alloy solution during casting through a method by adhering the mixed powder to a pure aluminum metal wire, the rapid diffusion and homogenization of micro powder particles is facilitated, the production efficiency is improved, wear-resistant materials are locally added by friction stir machining, and the material utilization ratio is improved.

The invention belongs to the technical field of medical polymers, and discloses a low-particle precipitation medical polypropylene material as well as application and a preparation method thereof. The low-particle precipitation medical polypropylene material is prepared from the following components in parts by mass: 50-80 parts of polypropylene, 1-5 parts of low-molecular weight polyolefin wax, 10-35 parts of vinyl elastomer, 5-15 parts of auxiliary crosslinked elastomer, 0.005-0.05 part of modifying peroxide and 0.01-0.5 part of an antioxidant. The preparation method comprises the following steps: uniformly mixing the polypropylene, the vinyl elastomer, the auxiliary crosslinked elastomer and the antioxidant, adding into an extruder, melting and kneading at 150-200 DEG C, uniformly mixing and dispersing the modifying peroxide and the low-molecular weight polyolefin wax, adding into the extruder, continuously extruding, cooling, and pelletizing to obtain the medical polypropylene material. The preparation method can be used for preparing combined covers for large infusion packages, medical sanitary equipment or medicine storage containers.

The invention discloses a device for preparing amorphous alloy. The device comprises a molten alloy injection system, a forming machine table, a cooling material injection system and a heat exchange system, wherein the molten alloy injection system comprises a molten pool, a first pipeline, a first electromagnetic pump and a first nozzle, and is used for downwards injecting alloy molten mass of the molten pool through the first nozzle; the forming machine table is located below the first nozzle, and comprises a conveying belt and rollers, and the conveying belt is used for receiving the alloy molten mass injected from the first nozzle; a cooling material is liquid metal, the cooling material injection system comprises a second nozzle, a second electromagnetic pump, a second pipeline and a recycle pool, and liquid metal in the recycle pool is upwards injected by the second nozzle; the heat exchange system comprises a third pipeline, a mechanical pump and a radiator, and the recycle pool is communicated with the radiator through the third pipeline and used for exchanging heat of the cooling material. Besides, the invention further comprises a method for preparing the amorphous alloy by means of the preparing device.

The invention discloses an EU-1 molecular sieve and a synthesis method thereof, wherein the crystal structure of the EU-1 molecular sieve is a typical EUO structure. The synthesis method comprises: mixing an inorganic alkali, an aluminum source, a silicon source, a templating agent and water, stirring to obtain a silicon-aluminum gel, and crystallizing for a certain time; and adding water, a second templating agent and alumina, uniformly stirring, and carrying out hydrothermal crystallization to obtain the EU-1 molecular sieve. According to the present invention, the EU-1 composite molecular sieve synthesized by the method is the low silica-alumina ratio zeolite, and has the high crystallinity; and with the synthesis method, the generation of the impurity crystal can be avoided, and the operation is simple and easy to perform.

The invention relates to an environment-friendly padding material for cattle farms, and a manufacture method and a use method of the padding material. The environment-friendly padding material for the cattle farms is obtained by mixing the padding-material main materials with tea seed cakes and carbonized rice husks, and performing aerobic fermentation, softening and dewatering, wherein the padding-material main materials are composed of trimmed branches of cinnamomum camphora and other trees. The manufacture method comprises mixing smashed small branches of cinnamomum camphora and other trees according to a proportion, and performing crushing and rubbing, so as to obtain the padding-material main materials; uniformly mixing the padding-material main materials with tea seed cake powder and the carbonized rice husks, and performing aerobic fermentation, so as to obtain the padding material for cattle pens. When liquid overflows during a process that the padding material is used for the first time, the padding material is taken out, cinnamomum camphora trimmed branches, tea seed cake powder and carbonized rice husks are added, fermentation and dewatering are performed according to the manufacture method, and the padding material can still be used after being used for two times. Through the technical scheme, agricultural and forestry wastes can be recycled, the cattle raising cost can be reduced, and the effect of improving the environment of the cattle farms can be achieved.

The invention relates to a water soluble salt-based zinc electrolyte, in particular to a water soluble salt-based zinc electrolyte and an application thereof in a secondary zinc battery. The water soluble salt-based zinc electrolyte is a nitrile compound and a zinc salt containing crystal water. The water soluble salt-based zinc electrolyte provided by the invention has the characteristics of lowviscosity, high stability, high ionic conductivity, the low freezing point, low cost and insensitivity to moisture and air; and the reversibility and the stability of electrochemical deposition / dissolution of the zinc electrode can be remarkably improved through a special solvation environment and an electrode interface adsorption structure, so that the problem of short cycle life of the aqueous secondary zinc battery is effectively solved. The secondary zinc battery using the water soluble salt-based zinc electrolyte has good charging-discharging cycle performance, and is green, environmentally friendly and low in price.

The invention discloses a zeolite water purifier for rapid purified seawater aquatic water. According to the technical scheme, the rapid seawater aquatic water purifier is mainly characterized by containing feed-grade zeolite powder and rice hull which are made into a finished product by smashing in a mechanochemical assisting mode, soaking, stirring, extruding, drying, screening and packaging, wherein the micro-pore channels of zeolite crystal molecules are increased through a mechanochemical assisting technique in the purified water filtering process, harmful substances such as ammonia nitrogen and nitrite in the aquatic water are effectively adsorbed in a physical mode, and the zeolite water purifier is strong in affinity with harmful polar gas molecules such as SO2, NH3 and H2S in the seawater aquatic water since great electrostatic attractive force and field of stress are formed inside the modified zeolite. Due to floating, suspension and up-and-down construability of the product in the seawater aquatic water, a three-dimensional water purification effect is achieved, the purifier is applicable to water purification for rapidly and conveniently reducing amino, removing nitrogen, stabilizing the pH value, adsorbing heavy metal and the like in the seawater aquatic process, and the purifier is also applicable to purification of seawater aquarium fish water.

The invention discloses an attapulgite water purifying agent for quickly purifying a marine culture water body. The technical scheme is characterized in that the quick marine culture water purifying agent is mainly composed of attapulgite clay and rice hull. The water purifying agent is prepared through the following steps: performing PICT (pressure-shear induced chemical transitions) pulverization, soaking, stirring, extruding, drying, screening, and packaging to obtain the finished product. In the adsorptive water purifying process, the specific surface area of attapulgite is increased through a PICT technology, thus removing granular and colloid pollutants through adsorption, and effectively removing harmful substances such as key pollutants phosphorus, ammonia nitrogen, COD (chemical oxygen demand) and the like causing eutrophication of a water body. Big electrostatic attraction power and stress fields are formed outside the attapulgite modified through the PICT technology, so that the ion-exchange property is enhanced, thereby being more beneficial to adsorptive purification of harmful substances such as Hg<2+>, Pb<2+>, Cr<6+>, Cd<2+>, Cu<2+>, other heavy metal ions and the like in the water. Thus, the attapulgite water purifying agent is applicable to purification and filtration such as quick ammonium reduction, nitrogen, phosphorus and COD removal, heavy metal adsorption and the like in the marine culture process, and is also applicable to purification of a marine aquarium fish water body.

The invention relates to a high line pressure compound silica gel roller which comprises a steel roller core and a coating on the surface of the roller core. The high line pressure compound silica gel roller is characterized in that an adhesive layer, an ethylene propylene diene monomer layer, an SEP rubber layer, a modified silicon rubber layer and a silicon rubber layer are sequentially arranged from the bottom to the surface of the coating. According to the high line pressure compound silica gel roller provided by the invention, through improving the coating on the surface of the steel roller core, the characteristics of high temperature resistance and high pressure resistance of silicon gel rollers are greatly improved, the inertia is high, the insulation performance is high, the coating can be effectively prevented from depoling so that the performance of the silicon gel rollers is greatly improved.

The invention discloses a medical stone water purifier quickly purifying a marine culture water body, which is mainly characterized in that the quick marine culture water purifier mainly comprises medical stone and rice hulls. A finish product is formed by micro-cutting assisted grinding, soaking, stirring, extruding, drying, screening and packaging. In a water purification and filtration process, the specific surface area of the medical stone is increased by a micro-cutting assisted technology, granular and colloid pollutants are absorbed and removed, and harmful substances, such as principal pollutants of water body eutrophication (ammonia nitrogen, nitrite nitrogen and H2S) can be effectively removed. Since a greater electrostatic attraction force and a stress field are formed outside the medical stone modified by the micro-cutting assisted technology, the ion-exchange property is improved, and the adsorption purification of the harmful substances such as heavy metal ions (such as Hg<2+>, Pb<2+>, Cr<6+>, Cd<2+> and Cu<2+>) in water is more facilitated. The purifier is applicable to the purification and filtration such as quick ammonia reduction, as well as nitrogen, nitrite nitrogen and H2S removal in the marine culture process, and also applicable to purifying a marine aquarium fish water body.

The invention belongs to the vehicle alarm device technology field and particularly relates to a waterproof vehicle audio alarm device having a self protection circuit. The waterproof vehicle audio alarm device comprises a high voltage protection circuit, an intermittent tone generation circuit, a power amplification and output current circuit and a loudspeaker, wherein an upper wall of a sound film of the loudspeaker is provided with a waterproof ventilation film, the loudspeaker is connected with a positive electrode end of the high voltage protection circuit, the other end of the loudspeaker is connected with the power amplification and output current circuit, the power amplification and output current circuit is connected with the intermittent tone generation circuit, the high voltage protection circuit comprises an electric signal anti-interference network module, an emitter follower module and a protection circuit module which are sequentially connected in series and further comprises a power source anti-interference network module connected with the emitter follower module, the power source anti-interference network module is connected with the intermittent tone generation circuit, the protection circuit module and the loudspeaker, and the electric signal anti-interference network module is further provided with a protection diode. The waterproof vehicle audio alarm device has the high voltage protection function and further has properties of good waterproof performance and long service life.

The invention discloses a kieselguhr water purifier quickly purifying a marine culture water body, which is mainly characterized in that the quick marine culture water purifier mainly comprises food grade kieselguhr and rice hulls. A finish product is formed by micro-cutting assisted grinding, soaking, stirring, extruding, drying, screening and packaging. In an absorption and water purification process, microchannels and specific surface area of the kieselguhr are increased by a micro-cutting assisted technology, granular and colloid pollutants are absorbed and removed, the water body turbidity can be effectively reduced, and harmful substances, namely principal pollutants of water body eutrophication, such as phosphorus and ammonia nitrogen can be effectively removed. A three-dimensional purification effect of the water body is facilitated due to floating, suspension and sinking and floating controllability of the product in the marine culture water body, and the purifier is applicable to water body purification such as quick ammonia reduction, denitrification, pH (Potential of Hydrogen) value regulation and control and heavy metal absorption in a marine culture process, and applicable to purifying a marine aquarium fish water body.

The invention discloses a method for producing cryolite from fluosilicic acid waste liquid in the technical field of cryolite preparation. The method includes the steps of 1, adding the fluosilicic acid waste liquid and excessive 5-10% sodium carbonate into a reaction kettle, mixing to form material liquid, stirring the material liquid, heating to 70 DEG C, filtering out silica gel until a pH value of the material liquid reaches 8-9, and obtaining filtrate, namely a sodium fluoride solution; 2, pouring the fluosilicic acid waste liquid and aluminum oxide in a specific reaction ratio into the reaction kettle to form material liquid, stirring the material liquid, heating to 80 DEG C, filtering out silica gel until the material liquid is free of particles, and obtaining filtrate, namely an aluminum fluoride solution; 3, adding the sodium fluoride solution and the excessive 9-11% aluminum fluoride solution into a synthesis kettle to form mixed liquid, heating the mixed liquid to 95-100 DEG C until no crystal particle generates in the synthesis kettle, filtering the mixed liquid to obtain the cryolite, heating hot water to wash, spin-drying and drying so as to obtain a cryolite finished product. By the method, the utilization rate of the fluosilicic acid waste liquid and the yield of the cryolite are increased remarkably, and the quality of the cryolite can be improved remarkably.

The invention discloses dual-purpose cemented sand used for oilfield development and aims at providing the dual-purpose cemented sand which cements and solidifies under the water bath environment, improves the ultimate recovery of the oil well, has good effects of sand prevention, leak stoppage, water plugging and profile control and effectively protects the oil layer. The dual-purpose cemented sand contains the following components according to percentages by weight of 60-80 percent of mixing chamotte of sulphoaluminate and ferrous aluminate, 10-20 percent of sintering porcelain granules and 10-20 percent of quartz sand. The dual-purpose cemented sand belongs to inorganic material, has strong inertia, stable performance, no harms to the human body, no pollution to the environment, low cost and can effectively protect the oil layer. As the dual-purpose cemented sand has the adsorptivity and the cementation and solidification performance among granules in the water bath environment, after entering into the stratum, the dual-purpose cemented sand cements and solidifies to form an artificial borehole wall under the water bath environment, thereby being capable of satisfying the cementing strength and the permeability required during the production. When the dual-purpose cemented sand is used for the measures of sand prevention, leak stoppage, water plugging and profile control, and the like, the construction process is simple, the construction period is short, the construction cost is low, the measure effect is good and the validity period is long.

The invention relates to the field of a finishing method of cotton knitted goods and discloses a finishing method for improving the shrinkage rate of napped lints of the cotton knitted goods and the quality of plush. The finishing method comprises the following steps: (1) dyeing grey cloth, dewatering and arranging the cloth; (2) sizing and drying a pulling needle; (3) napping and raising; (4) tentering and sizing; (5) fully overfeeding and tentering for sizing; (6) carrying out flat-screen loose type drying; and (7) adding steam to pre-shrink a felt for sizing. The finishing method disclosed by the invention has the advantages that the prior art is improved, the traditional steps of washing and drying are omitted, the steps of fully overfeeding and tentering for sizing and carrying out flat-screen loose type drying are added for alternation, and the technical problems of high shrinkage rate of finished products and low quality of the plush in the prior art can be solved.

The invention belongs to the technical field of medical polymers, and discloses a low-particle precipitation medical polypropylene material as well as application and a preparation method thereof. The low-particle precipitation medical polypropylene material is prepared from the following components in parts by mass: 50-80 parts of polypropylene, 1-5 parts of low-molecular weight polyolefin wax, 10-35 parts of vinyl elastomer, 5-15 parts of auxiliary crosslinked elastomer, 0.005-0.05 part of modifying peroxide and 0.01-0.5 part of an antioxidant. The preparation method comprises the following steps: uniformly mixing the polypropylene, the vinyl elastomer, the auxiliary crosslinked elastomer and the antioxidant, adding into an extruder, melting and kneading at 150-200 DEG C, uniformly mixing and dispersing the modifying peroxide and the low-molecular weight polyolefin wax, adding into the extruder, continuously extruding, cooling, and pelletizing to obtain the medical polypropylene material. The preparation method can be used for preparing combined covers for large infusion packages, medical sanitary equipment or medicine storage containers.

The invention discloses a municipal road height limit frame. The municipal road height limit frame comprises two cross beams arranged in parallel, a buffer plate is arranged between the cross beams, and more than one through hole is formed in the buffer plate. Sealed cavities are formed in the positions, located between the adjacent through holes, in the buffer plate, the cavities on the tail portion are filled with sand, and the remaining cavities are filled with gas. Sliding grooves are formed in the opposite surfaces of the cross beams, and more than one sliding blocks is slidably installedin each of the sliding grooves. One ends of the sliding blocks extend along the openings of the sliding grooves to the outside, and hanging holes are formed in the ends, located on the outside, of the sliding blocks. The through holes are provided with elastic ropes, and both ends of the elastic ropes are fixedly connected with hooks. One ends of the hooks are all fixed into the hanging holes ofthe sliding blocks. The municipal road height limit frame is simple in structure and convenient to use, a vehicle can be stopped slowly, strong inertia is avoided when stopping, the safety of a driveris increased, and at the same time, the damage of the vehicle and unnecessary loss are avoided since an object hit by the vehicle is made of a flexible material.

The invention discloses dual-purpose cemented sand used for oilfield development and aims at providing the dual-purpose cemented sand which cements and solidifies under the water bath environment, improves the ultimate recovery of the oil well, has good effects of sand prevention, leak stoppage, water plugging and profile control and effectively protects the oil layer. The dual-purpose cemented sand contains the following components according to percentages by weight of 60-80 percent of mixing chamotte of sulphoaluminate and ferrous aluminate, 10-20 percent of sintering porcelain granules and10-20 percent of quartz sand. The dual-purpose cemented sand belongs to inorganic material, has strong inertia, stable performance, no harms to the human body, no pollution to the environment, low cost and can effectively protect the oil layer. As the dual-purpose cemented sand has the adsorptivity and the cementation and solidification performance among granules in the water bath environment, after entering into the stratum, the dual-purpose cemented sand cements and solidifies to form an artificial borehole wall under the water bath environment, thereby being capable of satisfying the cementing strength and the permeability required during the production. When the dual-purpose cemented sand is used for the measures of sand prevention, leak stoppage, water plugging and profile control, and the like, the construction process is simple, the construction period is short, the construction cost is low, the measure effect is good and the validity period is long.

The invention discloses a treating method for silver electrodes used for ion chromatography electrochemistry amperometric detection, and relates to the technical field of ion chromatography electrochemistry amperometric detection. The silver electrodes are placed in a treating agent solution after mechanical polishing, stable silver crystalline grain structures are formed on the surfaces of the silver electrodes through a synergistic effect of orientated growth and orientated corrosion, namely exchange balance of Ag with Ag<+> and e<-> is mainly used, a dissolution prompting effect of HNO3 and methanesulfonic acid is used supplementarily, during orientated corrosion of high energy surface and high activity silver atoms of the silver crystalline grains, low activity silver atoms are generated through orientated sedimentation of low energy surface, and then sulfydryl groups and nitrogen atoms in a corrosion inhibitor are adsorbed to the surfaces of newly generated low activity silver atoms to avoid dissolution, so that the development of dissolution balance to the generation of low activity silver atoms is promoted, a plurality of stable silver crystalline grain structures are formed on the surfaces of the silver electrodes finally, the treated silver electrodes are relatively large in real area, uniform in microstructures and higher in inertia, the detection current value upper limit of ion chromatography electrochemistry amperometric detection can be improved, and the detection life is prolonged.

The invention discloses a method for producing cryolite through fluosilicic acid waste liquid in the technical field of cryolite preparation. The method includes the following steps of firstly, addingthe fluosilicic acid waste liquid and sodium carbonate excessive by 5-10% in a reaction still to be mixed to form material liquid, stirring the material liquid, conducting heating to 70 DEG C, and filtering out silicon dioxide silica gel after the pH value of the material liquid is 8-9 to obtain filtrate, namely a sodium fluoride solution; secondly, pouring the fluosilicic acid waste liquid and aluminium oxide of a reaction ratio in the reaction still to form a material liquid, stirring the material liquid, conducting heating to 80 DEG C, and filtering out silicon dioxide silica gel after noparticles exist in the material liquid to obtain filtrate, namely an aluminum fluoride solution; thirdly, putting the sodium fluoride solution and the aluminum fluoride solution excessive by 9-11% inthe reaction still to form mixed liquid, heating the mixed liquid to 95-100 DEG C till no grains are generated in the reaction still, filtering the mixed liquid, filtering out cryolite, adding hot water for washing, and conducting spin-drying and drying to obtain a finished cryolite product. By means of the scheme, the utilization rate of the fluosilicic acid waste liquid and the quality and yieldof the cryolite can be remarkably increased.

The invention particularly relates to a preparation method of a microbial fermentation bed packing for raising pigs in large stalls and belongs to the technical field of fermentation bed packings. Thefermentation bed packing is prepared from coco residuum, chaff, saw dust, wood shavings, corn cob blocks and the like. The preparation method of the microbial fermentation bed packing for raising pigs in the large stalls is reasonable and efficient, compound fermentation bed raw materials are adopted as a medium body, coarse and fine material matching is reasonable, the packing has stronger hygroscopic property and inertness and long fermentation period, a short bacillus strain is added to serve as a probiotic additive, the rotting rate of the fermentation bed raw materials can be reduced, and the technical problem is solved that a fermentation bed packing prepared in the prior art is lower in probiotic survival rate in preparation process, lower in content and shorter in validity duration.

The invention discloses a zirconia-based metal texture crystal diamond material, a ceramic tile and a preparation method thereof, and the preparation method comprises the following steps: mixing zirconia powder, an oxide colorant and a sintering aid to obtain mixed powder; after the mixed powder is formed, sintering and crushing are conducted, and the zirconium oxide-based metal texture crystal diamond material is obtained. According to the preparation method provided by the invention, various zirconium oxide-based metal texture crystal diamond materials with single color, different particle forms and obvious flashing effect can be obtained. And meanwhile, the zirconium oxide-based metal texture crystal diamond material can resist high temperature, is strong in inertia, stable in batch production performance, not easy to participate in reaction, and strong in gloss and metal texture stability.

The invention discloses a cementation propping agent, and provides the cementation propping agent which is characterized in that the cementation propping agent is cemented and solidified under low temperature water-bath environment, the high temperature resistance cementation propping agent through cementation and solidification is used for heavy oil thermal recovery and coal bed gas exploitation. The cementation propping agent is compounded by aluminate chamotte sand with particle size of 0.35-1.6mm and high alumina sand, and comprises 50-80% of aluminate chamotte sand and 20-50% of high aluminium sand through weight percentage. The cementation propping agent is prepared by inorganic at-resisting materials through complex formulation, the aluminate chamotte sand is a cementation material, and can resist high temperature of 1600 DEG C after cementation and solidification. The high aluminium sand is a cementation aggregate and can resist high temperature of 2000 DEG C. The above materials are uniformly mixed according to reasonable ratio, and are subjected to hydration and hardening reactions under water-bath environment at more than 5 DEG C, hydration and hardening speed accelerates by following the increased temperature, after cementation and hardening for 72 hours, a continuous cementation solidified body is formed, so that sand prevention, water plugging and pressing crack measure requirements of heavy oil thermal recovery well and coal bed gas well can be satisfied.

The invention discloses a meerschaum water purifying agent for quickly purifying a marine culture water body. The technical scheme is characterized in that the quick marine culture water purifying agent is mainly composed of meerschaum and rice hull. The water purifying agent is prepared through the following steps: performing PICT (pressure-shear induced chemical transitions) pulverization, soaking, stirring, extruding, drying, screening, and packaging to obtain the finished product. In the water purification and filtration process, the specific surface area of meerschaum is increased through a PICT technology, thus removing granular and colloid pollutants through adsorption, and effectively removing harmful substances such as key pollutants ammonia nitrogen, COD (chemical oxygen demand) and the like causing eutrophication of a water body. Big electrostatic attraction power and stress fields are formed outside the kieselguhr modified through the PICT technology, so that the ion-exchange property is enhanced, thereby being more beneficial to adsorptive purification of harmful substances such as Hg<2+>, Pb<2+>, Cr<6+>, Cd<2+>, Cu<2+>, other heavy metal ions and the like in the water. Thus, the meerschaum water purifying agent is applicable to purification and filtration such as quick ammonium reduction, nitrogen, phosphorus and COD removal, heavy metal adsorption and the like in the marine culture process, and is also applicable to purification of a marine aquarium fish water body.

The invention discloses a manufacturing method of a rigid-flexible printed circuit board. The method comprises the following steps of manufacturing a solder mask layer in an area of a flexible printedcircuit board where solder mask needs to be manufactured, baking at high temperature, pasting a dry film on the solder mask layer, exposing and developing to form a dry film layer, coating a wet filmon the dry film layer, exposing and developing, and reserving a wet film pattern corresponding to the dry film layer to form a first wet film layer; coating a wet film at the position, correspondingto the first wet film layer, of a rigid board, exposing and developing, reserving a wet film pattern corresponding to the first wet film layer, forming a second wet film layer, typesetting and laminating a flexible board and the rigid board, uncovering the rigid board after laminating to form an uncovering area, and exposing the dry film layer or the first wet film layer in the uncovering area; and removing the auxiliary area, and removing the dry film layer or the dry film layer and the first wet film layer by adopting a film removing solution to obtain the rigid-flexible printed circuit board. According to the manufacturing method of the rigid-flexible printed circuit board, the quality of the rigid-flexible printed circuit board can be effectively improved, and the problems that the rigid-flexible printed circuit board is scrapped in the uncovering process and the like are solved.

The invention relates to a two-phase flow cooling device for IGBT. The device comprises a heat exchange cold plate module, a flow mixing pipe, a liquid storage buffer tank, a radiator and a power pump, the heat exchange cold plate module, the flow mixing pipe, the liquid storage buffer tank and the radiator are sequentially and annularly connected to form a cooling circulation flow channel, and the power pump is connected into the cooling circulation flow channel; and the heat exchange cold plate module comprises a hollow shell, the two ends of the shell are connected into the cooling circulation flow channels, a heat exchange panel is arranged on one side face of the shell, IGBTs are welded to the outer side face of the heat exchange panel, heat exchange fins are arranged on the inner side face of the heat exchange panel, and an intensified boiling layer is arranged on each heat exchange fin. Compared with like devices in the prior art, the cooling device has the advantages that efficient heat dissipation of small-flow refrigerants is achieved, the power requirement and the overall leakproofness requirement of the cooling device for the power pump are lowered, and the working stability is improved.

The invention belongs to the technical field of agriculture, and particularly relates to artificial sponge soil, a preparation method thereof and an application of the artificial sponge soil in air layering, wherein the soil specifically comprises the following components in each 1000g finished product: 10-50g of inorganic mineral fertilizer, 100-300g of a coagulant, 1-10g of adhesive and 50-200gof a leavening agent, and the balance of an excipient. The artificial sponge soil is simple in preparation and use method and more time-saving and labor-saving; the soil has pure matrix, is resistantto rain washing and environment-friendly; the process is simple and feasible, is beneficial to large-scale popularization, and provides a new air layering technology for the market; the artificial sponge soil can also enable plants to be planted on wall surfaces, in the air and other attachments, space can be fully utilized and land resources are saved; if the prepared artificial sponge soil cannot be used all at once, the rest part can be stored for a long time after being cooled; and when the artificial sponge soil is reused, the artificial sponge soil is heated to 40-50 DEG C again and is used after being melted, so that a large amount of cost can be saved.